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Transcript of U.S. Patent 6,353,169, entitled "Universal Audio Communications and Control System and Method", to...
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7/25/2019 U.S. Patent 6,353,169, entitled "Universal Audio Communications and Control System and Method", to Gibson, is
1/28
US006353169B1
( 1 2 )
United
States
Patent
( 1 0 )
P a t e n t N 0 . : U S 6 , 3 5 3 , 1 6 9 B1
J u s z k i e w i c z
e t
a l .
( 4 5 ) Date o f P a t e n t :
Mar.
, 2002
( 5 4 )
UNIVERSALAUDIO COMMUNICATIONS
5 , 9 9 5 , 5 1 2
A * 1 1 / 1 9 9 9 P o g u e , J r .
AND CONTROL
SYSTEM
AND METHOD
OTHER
PUBLICATIONS
( 7 5 )
I n V t J n t O r S I Henry
E - J l l S Z k i e W i C Z , N a s h v i l l e , TN O b j e c t i v e s f o r DTE P o w e r S t u d y G r o u p d a t e d N o v . 1 0 ,
( U S ) ; T h O m Z I I S L - S h e r m a n , S t P a u l , 1 9 9 9 ,
a s
a p p r o v e d b y DTE P o w e r v i a MDI S G .
MN U s ) ; R l c h a l d A - F I a I I t Z , H a t b o r o , A v i o D i g i t a l a n d A p o g e e T e c h n o l o g y A n n o u n c e P a r t n e r
PA ( U s ) ; J a S O I l 5 - F l a k s ,
P a C i ? C a ,
CA s h i p t o D e v e l o p D i g i t a l
A u d i o
Home N e t w o r k
c i t e d
a t
( U s ) w w w . h o r i Z o n p r . c o m .
T h e
D i g i t a l H a r m o n y R o a d m a p
c i t e d a t
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( 7 3 ) A s s i g n e e :
G i b s o n
G u i t a r C 0 r p . , N a s h v i l l e , TN
monywm
(Us)
MultiChannel Audio a n d
Music
D a t a R i d e s on t h e IEEE
_ _ _ _ _ 1394 HighPerformance Serial Bus cited at
www yamaha
(
*
) N o t i c e : S u b J e c t t o
a n y
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e x t e n d e d
o r a d l u s t e d u n d e r 35 A r c h i t e c t u r e A c o u s t i c s c i t e d a t h t t p : / / a a . p e a v e y . c o m .
U - S ' C ' 1 5 4 ( k ) ) b y 0 d a y s
W h i t e
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ABSTRACT
(52) US
C l .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. .
84/600; 84/645;
369/4;
_ _ _ _
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a n d
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s y s t e m mcludes a
( 5 8 ) F i e l d of Search . . . . . . . . . . . . . . . . . . . . . . .
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p l u r a l i t y
o f a u d i o
d e v i c e s each o f which i n c l u d e s a
d e v i c e
3 7 0 / 2 7 6
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module
f o r c o m m u n i c a t i o n o f d i g i t a l
a u d i o
d a t a
and
c o n t r o l d a t a from
a t l e a s t one
of
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devices
t o a t l e a s t
( 5 6 )
R e f e r e n c e s C i t e d o n e
o t h e r
o f
t h e d e v i c e s .
A u n i v e r s a l
d a t a l i n k
i s
o p e r a t i v e l y
c o n n e c t e d t o e a c h o f
t h e
d e v i c e i n t e r f a c e
m o d u l e s . The
US
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l i n k s a r e o p e r a
5 4 0 2 4 9 9 A * 3 / 1 9 9 5
R o b i s o n
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t o c o n n e c t t h e d e v i c e s t o g e t h e r i n t h e
5 , 4 8 7 , 0 6 7 A
*
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p r o v i d e
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t h e d i g i t a l
5 , 7 6 8 , 3 5 0 A *
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V e n k a t a k r i s h n a n 3 7 0 / 4 1 8 X a u d i o d a t a
and
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t h e
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5 , 9 1 7 , 8 3 5 A
*
6/1999 B a r r e t t
e t
a l .
5 , 9 3 3 , 4 3 0
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. . 370/395 32
Claims, 5
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B1
1
UNIVERSALAUDIO
COMMUNICATIONS
AND
CONTROL SYSTEMAND
METHOD
T h i s
a p p l i c a t i o n
c l a i m s b e n e ? t o f o u r
p r e v i o u s l y
? l e d
p r o v i s i o n a l a p p l i c a t i o n s S e r . N o .
6 0 / 1 3 1 , 0 3 1 , ? l e d A pr .
2 6 ,
1 9 9 9 ,
e n t i t l e d
U n i v e r s a l
C o m m u n i c a t i o n s a n d
C o n t r o l
S y s
tem F o r Ampli?ed M u s i c a l
I n s t r u m e n t , a n d S e r . N o .
6 0 / 1 5 6 , 0 0 3 ? l e d S e p . 2 3 ,
1 9 9 9 ,
e n t i t l e d
U n i v e r s a l
Com
m u n i c a t i o n s a n d C o n t r o l S y s t e m F o r Ampli?ed M u s i c a l
I n s t r u m e n t .
BACKGROUND OF THE INVENTION
T h i s
i n v e n t i o n p e r t a i n s t o
s y s t e m s
f o r
e n a b l i n g
t h e com
m u n i c a t i o n o f s i g n a l s and d a t a
betWeen a
m u s i c a l i n s t r u m e n t
a n d e l e c t r o n i c components n e e d e d t o
c o n t r o l
a n d r e - p r o d u c e
s o u n d s
g e n e r a t e d
b y t h a t
i n s t r u m e n t .
More s p e c i ? c a l l y , t h i s
i n v e n t i o n
r e l a t e s t o
a sys tem and method
t h a t
f a c i l i t a t e s
t h e
interconnection
of
one o r
more
diverse musical
instruments
and r e l a t e d
a u d i o
components on a u n i v e r s a l netWork f o r
p u r p o s e s
o f
c o m m u n i c a t i o n
o f a u d i o
s i g n a l s
a n d
s i g n a l s
t o
i d e n t i f y
a n d
c o n t r o l t h e d e v i c e s .
T h e g e n e r a t i o n , t r a n s m i s s i o n , a m p l i ? c a t i o n a n d c o n t r o l o f
a u d i o s i g n a l s
a n d
d e v i c e s
i n v o l v e s
d i v e r s e y e t
i n t e r r e l a t e d
t e c h n o l o g i e s t h a t a r e
c h a n g i n g r a p i d l y .
T h e d e v e l o p m e n t a n d
i m p l e m e n t a t i o n o f h i g h b a n d W i d t h d i g i t a l
c o m m u n i c a t i o n
t e c h n o l o g i e s a n d d i s t r i b u t i o n s y s t e m s i s
s i g n i ? c a n t l y
a f f e c t
i n g a l l m e d i a i n d u s t r i e s , f r o m b o o k
p u b l i s h i n g
t o t e l e v i s i o n /
v i d e o
b r o a d c a s t i n g .
P r o d u c t s , s y s t e m s ,
a n d
s e r v i c e s
t h a t
a f f e c t
t h e s e n s e o f s i g h t o r sound a r e
converging i n
t h e
use
o f
common e c h n o l o g i e s
a n d d i s t r i b u t i o n p i p e l i n e s . T h i s
h a s
a p r o f o u n d e f f e c t , n o t o n l y
on t h e
n a t u r e o f
t h e
p r o d u c t s
t h a t
a r e p r o d u c e d ,
b u t
on
t h e
s a l e s
c h a n n e l s
and
t h e n a t u r e o f
p r o d u c i n g c o n t e n t f o r t h o s e p r o d u c t s .
C u r r e n t
e x a m p l e s
o f
t h e
c o n v e r g e n c e
o f a u d i o
a n d
d i g i t a l
t e c h n o l o g i e s a r e t h e a r ri v a l and consumer a c c e p t a n c e o f t h e
MPEG-3 d i g i t a l m u s i c
f o r m a t , t h e i n e x p e n s i v e
r e c o r d a b l e
CD
e . g . , t h e M i n i D i s c ) ,
a n d t h e
h i g h b a n d W i d t h
I n t e r n e t .
H o W e v e r , t h e
m a r k e t s f o r t e c h n o l o g y - d r i v e n
p r o d u c t s
a r e
n o t
s e r v e d
b y
i m p l e m e n t a t i o n
o f m u l t i p l e t e c h n i c a l s t a n
d a r d s .
T y p i c a l l y , a
neW t e c h n o l o g y
b e g i n s
i n
i t s e a r l y
p h a s e
W i t h m u l t i p l e s t a n d a r d s ,
Which
i n many c a s e s a r e v i g o r o u s l y
d e b a t e d a n d d i s p u t e d
among
v a r i o u s
a d v o c a t e s f o r t h e
d i f f e r e n t s t a n d a r d s . I n most
t e c h n o l o g y - d r i v e n
i n d u s t r i e s
t h a t p r o s p e r , a
s i n g l e
s t a n d a r d h i s t o r i c a l l y
i s u n i v e r s a l l y
a d o p t e d
b y
m e m b e r s o f t h a t
i n d u s t r y . E x a m p l e s
o f
s u c h
s t a n d a r d i Z a t i o n i n c l u d e AC e r s u s DC ousehold e l e c t r i c a l
s u p p l y , P o s t s c r i p t p r i n t i n g l a n g u a g e , a n d VHS v e r s u s B e t a
v i d e o
r e c o r d i n g f o r m a t .
S i m i l a r l y , t h e r e
i s
a
need
f o r a
u n i v e r s a l l y a c c e p t e d s t a n d a r d f o r d i g i t a l c o m m u n i c a t i o n o f
a u d i o
a n d
v i d e o
c o n t e n t . B e c a u s e
o f
t h e overWhelming
a c c e p t a n c e o f t h e I n t e r n e t a n d
i t s T C P / I P p r o t o c o l ,
c o u p l e d
W i t h
a s u b s t a n t i a l p r e - e x i s t i n g i n f r a s t r u c t u r e
o f netWork
h a r d W a r e , s o f t W a r e , a n d knoW-hoW, a u n i v e r sa l s t a n d a r d f o r
d i g i t a l a u d i o / v i d e o c o m m u n i c a t i o n a n d c o n t r o l
s h o u l d
r e v o l v e
a r o u n d
t h i s
Well-knoWn TCP/IP a n d I n t e r n e t t e c h
n o l o g y .
The
Weakness
o f
t h e
e x i s t i n g a u d i o
h a r d W a r e m a r k e t
i s
i n
i t s a p p l i c a t i o n o f d i g i t a l e l e c t r o n i c t e c h n o l o g i e s . T o d a y s
m u s i c i a n s
c a n r e c o r d
and
p r o c e s s
m u l t i - t r a c k s
o f
h i g h
q u a l i t y sound
on t h e i r
computers b u t a r e f o r c e d t o p l u g i n t o
b o x e s W i t h 1 9 5 0 s e r a
a n a l o g
c i r c u i t s .
F o r e x a m p l e ,
t h e
o r i g i n a l
c h a l l e n g e
i n
t h e g u i t a r
m u s i c a l
i n s t r u m e n t
i n d u s t r y
Was t o
make
t h e g u i t a r l o u d e r.
The
c i r c u i t s
o f
t h e
day
d i s t o rt e d t h e
s o u n d o f
t h e
i n s t r u m e n t , b u t
d i d
a c c o m p l i s h
t h e i r
t a s k .
With t i m e ,
t h e s e
d i s t o r t i o n s
became d e s i r a b l e
t o n e s , a n d
became
t h e b a s i s o f c o m p e t i t i o n . G u i t a r p l a y e r s
a r e
very
i n t e r e s t e d
i n
sound
modi?cation.
10
1 5
20
25
30
35
40
45
50
55
60
6 5
2
D i g i t a l t e c h n o l o g y
a l l o W s
a musician
t o
c r e a t e
a n i n ? n i t e
v a r i e t y
o f
s o u n d
m o d i ? c a t i o n s a n d e n h a n c e m e n t s . The g u i
t a r p l a y e r
i n
a s m a l l c l u b h a s a
v e r i t a b l e
a r s e n a l o f stomp
b o x e s ,
r e v e r b
e f f e c t s , W i r e s , g u i t a r s a n d t h e l i k e . He
g e n e r
a l l y h a s a r a c k o f
e f f e c t s
b o x e s
a n d
a n a n t i q u a t e d a m p l i ? e r
p o s i t i o n e d
someWhere W h e r e
t h e
s o u n d
d i s t r i b u t i o n
i s
g e n
e r a l l y n o t
o p t i m a l
b e c a u s e t h e a m p l i ? e r i s e s s e n t i a l l y
a
p o i n t
s o u r c e . Because o f t h i s l a c k o f a c c u r a t e sound
p l a c e m e n t ,
t h e
s o u n d t e c h n i c i a n i s c o n s t a n t l y s t r ug g l i n g
t o
i n t e g r a t e
t h e
g u i t a r
p l a y e r
i n t o
t h e
o v e r a l l s o u n d s p e c t r u m ,
s o
a s t o p l e a s e
t h e r e s t o f t h e band a s W e l l a s t h e
audience
W ho Would l o v e
t o
h e a r
t h e e n t i r e e n s e m b l e .
T e c h n o l o g y h a s made some p r o g r e s s a l o n g a d i g i t a l a u d i o
p a t h .
F o r e x a m p l e ,
t h e r e
a r e p r i o r a r t
g u i t a r
p r o c e s s o r s
a n d
d i g i t a l a m p l i ? e r s t h a t
u s e
d i g i t a l
s i g n a l
p r o c e s s i n g ( D S P ) t o
a l l o W
a
s i n g l e g u i t a r t o e m u l a t e
a
v a r i e t y o f
d i f f e r e n t
g u i t a r
t y p e s , a m p l i ? e r t y p e s , a n d o t h e r s o u n d
m o d i ? c a t i o n s
s u c h a s
r e v e r b
a n d
d e l a y . To
a c h i e v e
t h e
same v a r i e t y o f s o u n d s a n d
v a r i a t i o n s W i t h o u t
u s i n g
D SP e c h n o l o g y ,
a
m u s i c i a n Would
h a v e
t o
b u y
s e v e r a l
g u i t a r s ,
s e v e r a l
d i f f e r e n t
a m p l i ? e r s ,
a n d
a t l e a s t o n e , i f
n o t
more
t h a n
o n e , a c c e s s o r y
e l e c t r o n i c
b o x .
A l l e x i s t i n g
i n s t r u m e n t s , i f t h e y
u s e a
t r a n s d u c e r
o f
a n y
k i n d , o u t p u t
t h e s o u n d
i n f o r m a t i o n
a s
a n
a n a l o g
s i g n a l .
T h i s
a n a l o g
s i g n a l
v a r i e s
i n
o u t p u t
l e v e l
a n d
i m p e d a n c e ,
i s
s u b j e c t t o c a p a c i t a n c e a n d o t h e r e n v i r o n m e n t a l d i s t o r t i o n s ,
a n d c a n b e
s u b j e c t t o g r o u n d
l o o p s
a n d o t h e r
k i n d s o f
e l e c t r o n i c
n o i s e .
A f t e r b e i n g d e g r a d e d
i n
s u c h f a s h i o n b y
t h e
e n v i r o n m e n t ,
t h e
a n a l o g s i g n a l i s
o f t e n d i g i t i Z e d
a t some
p o i n t , W i t h
t h e
d i g i t i Z e d
s i g n a l i n c l u d i n g t h e n o i s e
compo
n e n t . A l t h o u g h
e x i s t i n g d i g i t a l
a u d i o t e c h n o l o g i e s s h o W
p r o m i s e ,
i t i s c l e a r t h a t t h e a u d i o
e q u i p m e n t a n d m u s i c a l
i n s t r u m e n t
i n d u s t r i e s
Would bene?t from a system and
m e t h o d
W h e r e
a l l a u d i o s i g n a l s a r e
d i g i t a l
a t i n c e p t i o n .
At
p r e s e n t , t h e r e
a r e
m u l t i p l e
d i g i t a l
i n t e r c o n n e c t i o n
s p e c i ? c a t i o n s , i n c l u d i n g AES/EBU, S / P D I F , t h e
ADAT
L i g h t P i p e a n d IEEE 1 3 9 4 F i r e W i r e . H o W e v e r ,
n o n e
o f
t h e s e
s t a n d a r d s
o r
s p e c i ? c a t i o n s a r e p h y s i c a l l y
a p p r o p r i a t e
f o r t h e u n i q u e
r e q u i r e m e n t s o f l i v e m u s i ca l p e r f o rm a n c e .
I n
a d d i t i o n ,
c l o c k i n g , s y n c h r o n i z a t i o n ,
a n d
j i t t e r / l a t e n c y man
a g e m e n t
a r e
l a r g e
p r o b l e m s W i t h
many o f t h e s e
e x i s t i n g
d i g i t a l
o p t i o n s .
D i f f e r e n t
s e g m e n t s
o f t h e m u s i c
m a r k e t h a v e
e x p e r i
m e n t e d
i n
d i g i t a l a u d i o . Some s e g m e n t s h a v e
c o m p l e t e l y
embraced i t ,
b u t
t h e r e i s n o
a p p r o p r i a t e s c a l a b l e s t a n d a r d .
C l e a r l y , d i g i t a l c o m p o n e n t s e x i s t , b u t t h e s e a r e d e s i g n e d
a s
d i g i t a l
i s l a n d s . C o r r e s p o n d i n g l y ,
many m a n u f a c t u r e r s
h a v e c h o s e n
t o
make
h e i r
s m a l l
p o r t i o n
o f
t h e
p r o d u c t
W o r l d
d i g i t a l
b u t r e l y
m a i n l y o n t r a d i t i o n a l a n a l o g I / O
t o
c o n n e c t
t o
t h e
r e s t
o f t h e
W o r l d .
T h i s ma y s o l v e t h e l o c a l problem f o r
t h e
s p e c i ? c p r o d u c t
i n q u e s t i o n , b u t
d o e s l i t t l e
t o r e s ol v e t h e
g r e a t e r
s y s t e m - o r i e n t e d
i s s u e s t h a t
a r i s e
a s t h e
number o f
i n t e r c o n n e c t e d
d e v i c e s g r o W s .
I n a d d i t i o n , t h e
s m a l l
s o u n d
d e g r a d a t i o n c a u s e d
b y
a a n a l o g - t o - d i g i t a l a n d
d i g i t a l - t o
a n a l o g
t r a n s f o r m a t i o n i n e a c h b o x c o m b i n e s t o
p r o d u c e
n o n - o p t i m a l s o u n d q u a l i t y .
F i n a l l y , t h e c o s t , p o W e r a n d
s i Z e
i n e f ? c i e n c y
r e l a t e d
t o h a v i n g e a c h component i n
a
c h a i n
c o n v e r t i n g b a c k
a n d f o r t h
t o
d i g i t a l b e g s f o r a
u n i v e r s a l ,
e n d - t o - e n d
d i g i t a l s o l u t i o n .
A n o t h e r b a s i c y e t i m p o r t a n t p a r t o f
t h e
p r o b l e m i s t h a t
l i v e
m u s i c i a n s n e e d a
s i n g l e c a b l e
t h a t i s
l o n g , l o c a l l y
r e p a i r a b l e ,
a n d
s i m p l e
t o i n s t a l l
a n d
u s e . I n a d d i t i o n ,
i t
i s
h i g h l y
d e s i r a b l e
t o s u p p o r t
m u l t i p l e
a u d i o c h a n n e l s
on
a
s i n g l e c a b l e , a s s e t u p s o f t e n s c a l e o u t
o f
c o n t r o l
W i t h
c u r r e n t
m u l t i p l e c a b l e
s o l u t i o n s .
A l s o ,
p h a n t o m p o W e r i s
p r e f e r r e d
over b a t t e r i e s a s means t o poWer
t h e a c t i v e c i r c u i t s
used
i n
d i g i t a l
i n s t r u m e n t s .
-
7/25/2019 U.S. Patent 6,353,169, entitled "Universal Audio Communications and Control System and Method", to Gibson, is
8/28
US
6 , 3 5 3 , 1 6 9
B1
3
Based
on
t h e
t e c h n o l o g y
t r e n d s a n d p a t t e r n s t h a t h a v e
a l r e a d y b e e n e s t a b l i s h e d , a
d i g i t a l
g u i t a r
W i l l e m e r g e W i t h
t h e
t r a n s d u c e r s
( p i c k - u p s ) f e e d i n g
a
h i g h
b a n d W i d t h d i g i t a l
s i g n a l . T h i s a d v a n c e
W i l l remove many
d e t r i m e n t a l a s p e c t s
o f
t h e a n a l o g
t e c h n o l o g y i t
W i l l
r e p l a c e , i n c l u d i n g n o i s e ,
i n c o n si s t e n t t o n a l
r e s p o n s e
from
t i m e
t o
t i m e ,
a n d
l o s s
o f
? d e l i t y W i t h
a n e e d f o r
s u b s e q u e n t
s i g n a l p r o c e s s i n g .
T h e
i n t r o d u c t i o n o f
d i g i t a l
t e c h n o l o g y
f r o m t h e
i n s t r u m e n t W i l l
a l l o W
t h e e n t i r e
s i g n a l p a t h
a n d t h e e q u i p m e n t
a s s o c i a t e d
W i t h t h e s i g n a l p a t h
t o
b e d i g i t a l . U n f o r t u n a t e l y , t h e r e
i s n o
s y s t e m a v a i l a b l e t h a t W i l l e a s i l y a n d q u i c k l y
i n t e r c o n n e c t
m u l t i p l e
m u s i c a l i n s t r u m e n t s
a n d
a s s o c i a t e d a u d i o
compo
n e n t s s o t h a t t h e y can
communicate
With each
o t h e r
and be
c o n t r o l l e d
e n t i r e l y i n
t h e d i g i t a l
d o m a i n ,
u s i n g
a u n i v e r s a l
i n t e r f a c e a n d c o m m u n i c a t i o n s p r o t o c o l .
P e r f o r m i n g m u s i ci a n s
n e e d
a n e W ,
p e r f o r m a n c e - o r i e n t e d
s o l u t i o n t h a t
p r o v i d e s m u l t i p l e c h a n n e l s o f a d v a n c e d ? d e l i t y
a u d i o ,
i n t u i t i v e c o n t r o l c a p a b i l i t i e s , e x t r e m e
s i m p l i c i t y
a n d
t o t a l r e l i a b i l i t y . I t i s a l s o d e s i r a b l e f o r t h i s
s y s t e m
t o
b e
s c a l a b l e
t o
m e e t
t h e
r e q u i re m e n t s o f
p e r m a n e n t
i n s t a l l a t i o n s ,
i n c l u d i n g r e c o r d i n g s t u d i o a p p l i c a t i o n s .
SUMMARY
OF THE INVENTION
To overcome t h e
l i m i t a t i o n s and Weaknesses o f e x i s t i n g
a n a l o g
a n d d i g i t a l t e c h n o l o g i e s i n
t h e
m u s i c a l p e r f o r m a n c e
e n v i r o n m e n t , a p p l i c a n t h a s
i n v e n t e d a
s y s t e m t h a t W i l l
a l l o W ,
i n a
p r e f e r r e d e m b o d i m e n t , u p t o s i x t e e n ( 1 6 )
c h a n
n e l s
o f
32 bit96
kHZ
i g i t a l a u d i o s i g n a l s a n d d a t a t o
H o w
o v e r
a
s i n g l e
c a b l e i n
b o t h
d i r e c t i o n s , u s i n g i n e x p e n s i v e
c o n n e c t o r s and
c a b l e s a l r e a d y
a v a i l a b l e
and
i n u s e i n v i r t u
a l l y e v e r y c o m p u t e r n e t W o r k . T h i s c a b l e W i l l a l s o c a r r y
s u f f i c i e n t poWer t o
a l l o W t h e e l e c t r o n i c s i n t h e g u i t a r ( o r
o t h e r i n s t r u m e n t ) t o f u n c t i o n
W i t h o u t a b a t t e r y
o r o t h e r
poWer
s o u r c e .
F o r
c o n v e n i e n c e ,
t h e
s y s t e m
o f t h e p r e s e n t
i n v e n t i o n
W i l l sometimes be r e f e r r e d h e r e i n a s t h e Global
M u s i c a l I n s t r u m e n t C o m m u n i c a t i o n s S y s t e m ( o r G M I C S ) .
GMICS
i s
a t r a d e m a r k
o f t h e a s s i g n e e
o f
t h e p r e s e n t
i n v e n t i o n , G i b s o n
G u i t a r
C o r p .
The
s y s t e m o f t h i s i n v e n t i o n i n c l u d e s
t h e GMICS
a t a
l i n k , a h i g h - s p e e d p o i n t - t o - p o i n t
c o n n e c t i o n
f o r communi
c a t i o n o f d i g i t a l
a u d i o
d a t a betWeen
tWo GMICS e v i c e s .
The s y s t e m
a n d
method o f
t h e
i n v e n t i o n
f u r t h e r
i n c l u d e s
d e ? n i t i o n s a n d
d e s c r i p t i o n
o f t h e c h a r a c t e r i s t i c s o f i n d i
v i d u a l
GMICS e v i c e s a s W e l l a s GMICS system con?gu
r a t i o n
a n d
c o n t r o l p r o t o c o l s .
The GMICS d a t a
l i n k i s a h i g h - s p e e d
p o i n t - t o - p o i n t
c o n n e c t i o n t r a n s m i t t i n g f u l l - d u p l e x
d i g i t a l a u d i o s i g n a l s ,
c o n t r o l
s i g n a l s ,
and
u s e r d a t a
betWeen tWo
i n t e r c o n n e c t e d
GMICS e v i c e s . S e l f - c l o c k i n g d a t a
a r e
p a c k e d
i n f r a m e s
t h a t a r e c o n t i n u o u s l y t r a n s m i t t e d
betWeen
GMICS
e v i c e s a t
t h e
c u r r e n t
s a m p l e
r a t e .
F l e x i b l e p a c k i n g
o f d i g i t a l
a u d i o d a t a W i t h i n
a f r a m e
a l l o W s
a t r a d e o f f
betWeen b i t
r e s o l u t i o n and c h a n n e l capac
i t y
t o
o p t i m i Z e t h e ? t a n d i n t e r f a c e f o r G MICS d e v i c e s
h a v i n g
d i v e r s e
c h a r a c t e r i s t i c s . A o n t r o l
d a t a
? e l d p r o v i d e s
f o r GMICS
s y s t e m
c o n ? g u r a t i o n ,
d e v i c e
i d e n t i ? c a t i o n ,
c o n t r o l , a n d
s t a t u s . User d a t a
? e l d s a r e p r o v i d e d f o r
t r a n s
m i t t i n g
n o n - a u d i o
d a t a
b e t W e e n
GMICS d e v i c e s .
A GMICS s y s t e m ma y i n c l u d e tWo t y p e s
o f
GMICS
d e v i c e s i n s t r u m e n t s
a n d c o n t r o l l e r s . An n s t r u m e n t i s
t y p i c a l l y
a sound
t r a n s d u c e r
such
a s
a
g u i t a r ,
microphone,
o r
s p e a k e r .
A c o n t r o l l e r
i s
t y p i c a l l y
a n
i n t e l l i g e n t
a m p l i ? e r
t h a t
p r o v i d e s c o n n e c t i o n s a n d poWer
f o r m u l t i p l e
GMICS
i n s t r u m e n t s ,
a n d i s c a p a b l e o f , a n d r e s p o n s i b l e f o r ,
c o n ? g
u r i n g
t h e GMICS s y s t e m . C o n t r o l l e r s
may
a l s o
i n c l u d e
u p s t r e a m and doWnstream c o n n e c t i o n s t o o t h e r c o n t r o l l e r s
f o r
i n c r e a s e d
i n s t r u m e n t
c o n n e c t i v i t y .
1 5
25
35
45
55
6 5
4
Data l i n k e l e c t r o n i c s and a s s o c ia t e d c a b l i n g and connec
t o r s a r e designed f o r r e l i a b l e u s e i n h a r s h e n v i r o n m e n t s .
H o t - p l u g g i n g o f GMICS
d e v i c e s
i s s u p p o r t e d b y t h e
s y s t e m .
A c c o r d i n g l y ,
a
U n i v e r s a l
Communications a n d
C o n t r o l
S y s t e m
f o r
A m p l i ? e d
M u s i c a l I n s t r u m e n t s
i s
p r o v i d e d
t h a t
i n c l u d e s t h e
f o l l o W i n g n o v e l f e a t u r e s :
( 1 )
The C o n t r o l
d a t a
f o r
e a c h
d e v i c e i n c l u d e s
a
F r i e n d l y
naming sc heme
u s i n g
a D e v i c e ID s o t h a t : ( a ) t h e r e i s
a n
a u t o m a t i c
c o n ? g u r a t i o n b y , a n d s y n c h r o n i Z a t i o n
t o ,
t h e
s y s t e m
b y
t h e i d e n t i f y i n g d e v i c e ; ( b ) t h e u s e o f
a
F r i e n d l y
name a l l o W s
t h e
u s e r t o
name
h i s
d e v i c e on
t h e
s y s t e m ;
( c )
t h e
d e v i c e
name r e s i d e s i n t h e d e v i c e , n o t i n a d a t a b a s e ;
a n d
( d ) t h e d e v i c e I D
i s a v a i l a b l e
When h e d e v i c e i s
p l u g g e d
i n t o a f o r e i g n GMICS y s t e m .
( 2 ) A b i - d ir e c t i o n a l d e v i c e
i n t e r f a c e i s
p r o v i d e d
t h a t
a d d s
r e s p o n s e
t o
t h e e x i s t i n g i n s t r u m e n t s t i m u l u s t o
c r e a t e
a
f u l l
d u p l e x i n s t r u m e n t t h a t i s a b l e
t o d i s p l a y a n d r e a c t t o
o t h e r d e v i c e s
i n t h e s y s t e m .
( 3 )
T h e s y s t e m t o p o l o g y a l l o W s f o r n o d a l
c o n n e c t i o n
o f
r e s o u r c e s
s o
t h a t i n s t r u m e n t s
and
c o n t r o l
d e v i c e s
plug i n
t o
c r e a t e
t h e
d e s i r e d s y s t e m c o m p l e x it y a n d a l l o W i n g f o r
s i m p l e s y s t e m e n h a n c e m e n t by p l u g g i n g
i n a neW
d e v i c e
W i t h
t h e d e s i r e d
f e a t u r e s .
( 4 )
T h e
s y s t e m
i m p l e m e n t s d y n a m i c r e s o u r c e
a l l o c a t i o n ,
i n c l u d i n g :
( a )
r o u t i n g o f a u d i o a n d c o n t r o l
s i g n a l s o n
t h e
? y ; ( b ) a u d i o n o d e s c a n b e
m o v e d
a t W i l l ;
a n d
( c ) s p e c i a l
e f f e c t s d e v i c e s
can be s h a r e d W i t h
o u t p h y s i c a l l y moving o r
c o n n e c t i n g
t h e m .
( 5 ) L o g i c a l c o n n e c t i o n s a r e made t o t h e system s o
t h a t
a
d e v i c e c a n b e p h y s i c a l l y c o n n e c t e d i n t o t h e s y s t e m t h r o u g h
a n y
a v a i l a b l e c o n n e c t o r , e . g . ,
a
g u i t a r
d o e s
n o t
h a v e t o
b e
d i r e c t l y
p l u g g e d
i n t o t h e g u i t a r
a m p l i ? e r .
( 6 ) T h e s y s t e m
h a s
a
m u l t i - l a y e r e d
p r o t o c o l t h a t s u p p o r t s
many d i f f e r e n t
p h y s i c a l t r a n s p o r t
m e d i a
a n d
a l l o W s f o r
s i m p l e
e x p a n s i o n o f
b o t h
t h e number o f a u d i o
c h a n n e l s a n d
t h e d a t a b a n d W i d t h .
( 7 ) T h e r e c a n b e a f a m i l i a r l o o k i n g ( t o t h e u s e r ) p o i n t t o
p o i n t
c o n n e c t i o n
o f
d e v i c e s ,
o r a
s t a r n e t W o r k ( a n a l o g o u s
t o
a
b r e a k o u t b o x ) c o n ? g u r a t i o n
f o r m u l t i p l e
d e v i c e s ,
t h e r e b y
s i m p l i f y i n g
t h e
u s e r e x p e r i e n c e .
( 8 ) The s y s t e m
c a n
o p e r a t e
a t m u l t i p l e
s a m p l i n g r a t e s
s o
t h a t d i f f e r e n t
G MICS
d a t a
l i n k s
o p e r a t e
a t
d i f f e r e n t s a m p l e
r a t e s W i t h i n
t h e
s y s t e m .
( 9 ) Phantom
poWer
f o r i n s t r u m e n t
e l e c t r o n i c s i s d e l i v e r e d
over
t h e
GMICS
a t a
l i n k .
( 1 0 ) The
s y s t e m
c a n t a k e a d v a n t a g e o f c o n v e n t i o n a l
netWork
hardWare,
e . g . , one embodiment o f a
GMICS
s y s t e m i s i m p l e m e n t e d o v e r a 1 0 0 m e g a b i t
E t h e r n e t p h y s ic a l
l a y e r
u s i n g s t a n d a r d
C a t e g o r y 5 ( C A T 5 ) c a b l e
T h u s , GMICS
s t h e ? r s t l o W - c o s t d i g i t a l
i n t e r c o n n e c t i o n
system b a s e d
on
a
u n i v e r sa l s t a n d a r d t h a t
i s
a p p r o p r i a t e
f o r
u s e i n t h e l i v e ,
p r o f e s si o n a l , s t u d i o
a n d home m u s i c p e r f o r
mance
e n v i r o n m e n t s .
GMICS t e c h n o l o g y c a n
b e
q u i c k l y
a d a p t e d f o r u s e i n m u s i c a l
i n s t r u m e n t s , pr o c e s s o r s ,
a m p l i ? e r s , r e c o r d i n g
d e v i c e s ,
a n d m i x i n g
d e v i c e s .
GMICS
overcomes t h e l i m i t a t i o n s and performance
l i a b i l i t i e s
i n h e r e n t i n c u r r e n t
p o i n t
s o l u t i o n d i g i t a l i n t e r
f a c e s a n d c r e a t e s
a
c o m p l e t e l y
d i g i t a l s y s t e m
t h a t
o f f e r s
e n h a n c e d
s o n i c
? d e l i t y ,
s i m p l i ? e d
s e t u p
a n d u s a g e W h i l e
p r o v i d i n g neW l e v e l s o f
c o n t r o l
a n d
r e l i a b i l i t y .
G MICS e n a b l e s m u s i c a l i n s t r u m e n t s a n d t h e i r s u p p o r t i n g
d e v i c e s s u c h a s a m p l i ? e r s , m i xe r s ,
a n d
e f f e c t
b o x e s from
d i f f e r e n t v e n d o r s t o d i g i t a l l y i n t e r - o p e r a t e i n
a n
open
a r c h i t e c t u r e i n f r a s t ru c t u re .
-
7/25/2019 U.S. Patent 6,353,169, entitled "Universal Audio Communications and Control System and Method", to Gibson, is
9/28
US
6 , 3 5 3 , 1 6 9
B1
5
BRIEF DESCRIPTION
OF
THE
DRAWINGS
F I G .
1 i s a b l o c k d i a g r a m o f t h e s y s t e m o f
t h i s i n v e n t i o n
s h o w i n g
a
t y p i c a l
a r r a n g e m e n t t h a t i n t e r c o n n e c t s i n s t r u m e n t
d e v i c e s W i t h v a r i o u s
c o n t r o l d e v i c e s .
F I G .
2
i s
a
s c h e m a t i c
diagram
o f a n
embodiment
o f
t h e
s y s t e m o f t h i s i n v e n t i o n s h o W i n g
a
p h y s i c a l i m p l e m e n t a t i o n
a n d
i n t e r c o n n e c t i o n
o f d e v i c e s i n a n
o n - s t a g e
p e r f o r m a n c e
a u d i o e n v i r o n m e n t .
F I G .
3 i s
a
f r o n t p e r s p e c t i v e vieW
o f a music e d i t i n g
c o n t r o l d e v i c e u s a b l e
i n
t h e
s y s t e m o f t h i s i n v e n t i o n .
F I G . 4 i s a
b l o c k
d i a g r a m sh oWing tWo
d e v i c e
i n t e r f a c e
modules used i n
i n s t r u m e n t
o r c o n t r o l
d e v i c e s
connected
t o
i n
a
GMICS
s y s t e m ,
With
one d e v i c e i n t e r f a c e
module
con?gured
a s
a
system t i m i n g
m a s t e r
and
a
second d e v i c e
i n t e r f a c e module con?gured a s a s l a v e .
FIG. 5 i s a schematic diagram
o f
a c r o s s o v e r connection
betWeen
l i n k e d
d e v i c e s i n a GMICS ystem
s o t h a t t h e d a t a
t r a n s m i t t e d
by o n e d e v i c e i s r e c e i v e d by t h e o t h e r d e v i c e .
F I G . 6 i s
a
b l o c k
d i a g r a m
s h o W i n g t y p i c a l c o n n e c t i o n s o f
g u i t a r ,
e f f e c t s
b o X , a n d
a m p l i ? e r d e v i c e s
i n a
GMICS
s y s t e m .
F I G . 7 i s a b l o c k
d i a g r a m shoWing
t h e
d i r e c t i o n
o f
dominant
d a t a H o w i n a s i m p l e
GMICS
y s t e m .
F I G . 8 i s a b l o c k d i a g r a m
shoWing
t h e d i r e c t i o n o f
dominant d a t a How
i n a GMICS system
t h a t i n c l u d e s
a
r e c o r d i n g d e v i c e .
F I G . 9 i s
a
h i g h - l e v e l vieW
o f a
t y p i c a l GMICS d a t a
p a c k e t
f o r m a t .
F I G S . 1 0 a a n d b a r e b l o c k d i a g r a m s
i l l u s t r a t i n g c o n t r o l
message How c e n a r i o s
among
l i n k e d d e v i c e s i n a GMICS
s y s t e m .
DETAILED
DESCRIPTION
OF
THE
PREFERRED EMBODIMENTS
S y s t e m O v e r v i e W
As
shoWn
g e n e r a l l y
i n F I G S . 1
a n d
2 ,
t h e
t o p o l o g y
o f a
GMICS y s t e m 10 o f
t h i s i n v e n t i o n i s c h a r a c t e r i Z e d
by a
m o d u l a r ,
d a i s y
c h a i n e d
b i - d i r e c t i o n a l d i g i t a l i n t e r c o n n e c t i o n
o f m u s i c a l i n s t r u m e n t
d e v i c e s ,
p r o c e s s i n g
d e v i c e s , a m p l i ?
e r s
a n d / o r r e c o r d i n g s y st e m s . Each
d e v i c e
h a s
a
d a t a l i n k
connection
t o
one
o r
more o t h e r d e v i c e s .
Thus,
t h e system
10
i s c o m p r i s e d o f
i n s t r u m e n t
and c o n t r o l
d e v i c e s t h a t
a r e
i n t e r c o n n e c t e d by GMICS
d a t a
l i n k s . Each G MICS d e v i c e
g e n e r a t e s ,
p r o c e s s e s ,
r e l a y s ,
o r r e c e i v e s
a u d i o
d a t a ,
c o n t r o l
d a t a ,
o r b o t h .
F o r e x a m p l e , a s shoWn i n F I G . 2 , a g u i t a r s e t u p i n a
G MICS s y s t e m 1 0 may i n c l u d e a g u i t a r 1 2 , a n a m p l i ? e r 1 3 ,
a n d a c o n t r o l p e d a l 1 5 . The g u i t a r
1 2
may b e d i r e c t l y
c o n n e c t e d t o t h e a m p l i ? e r 1 3 t h r o ug h a s y s t e m
d a t a
l i n k
c a b l e 1 1 . The
f o o t
c o n t r o l 1 5 ma y b e c o n n e c t e d t h r o u g h a
USB a b l e
1 6 t o a
c o n t r o l
computer
1 7 ,
W i t h t h e
c o n t r o l
c o m p u t e r 1 7 a l s o c o n n e c t e d t o
t h e
a m p l i ? e r 1 3 t h r o u g h
a n o t h e r
l i n k c a b l e 1 1 . A l t e r n a t i v e l y , t h e g u i t a r
1 2
may
b e
d i r e c t l y c o n n e c t e d t o t h e c o n t r o l p e d a l 1 5 , Which i s i n
t u r n
c o n n e c t e d t o
t h e
a m p l i ? e r 1 3 . The
g u i t a r 1 2
c o n t a i n s a
s y s t e m
d e v i c e
module 2 3 ( F I G . 4 ) s o
t h a t
t h e g u i t a r 1 2 c a n
g e n e r a t e
d i g i t a l a u d i o
d a t a a s
W e l l
a s s e n d c o n t r o l d a t a from
one
o r
more
of
i t s
several
i n t e r n a l
control devices
s u c h
a s
a
p i c k u p
s e l e c t o r ,
volume c o n t r o l k n o b , o r
t o n e c o n t r o l .
The
c o n t r o l
p e d a l
1 5 W i l l g e n e r a t e c o n t r o l d a t a ,
a n d r e l a y
t h e
a u d i o
d a t a
s e n t
f r o m
t h e g u it a r 1 2 . The a m p l i ? e r
1 3
W i l l a c t
a s
a r e c e i v e r f o r any
c o n t r o l o r a u d i o d a t a s e n t b y t h e g u i t a r
o r volume p e d a l . Because t h e system 1 0
p r o v i d e s
10
1 5
25
35
45
55
6 5
6
b i - d i r e c t i o n a l c o m m u n i c a t i o n
o f a u d i o
a n d
c o n t r o l
d a t a , i t i s
f e a s i b l e
f o r
a m p l i ? e r 1 3
t o s e n d c o n t r o l messages o r a u d i o
b a c k
t o
t h e g u it a r 1 2 .
P h y s i c a l I n t e r f a c e
GMICS s
c a p a b l e o f h a v i n g
m u l t i p l e p h y s i c a l i n t e r f a c e s .
T h i s
a p p l i ca t i o n i d e n t i ? e s
t W o
p h y s i c a l
i n t e r f a c e s ,
t h e
com
mon i n s t r u m e n t
i n t e r f a c e a n d t h e h i g h - s p e e d o p t i c a l i n t e r
f a c e .
I n one
embodiment o f
t h e
s y s t e m ,
t h e
common
n s t r u m e n t
i n t e r f a ce ( t h e c o n n e c t i o n betWeen a m u s i c a l
i n s t r u m e n t
a n d
a n a m p l i ? e r ) i s
based
on a c o n v e n t i o n a l 100 megabit
Eth
e r n e t p h y s i c a l l a y e r . The 1 0 0 m e g a b i t GMICS d a t a l i n k i s
r e f e r r e d t o a s t h e
G100TX
i n k . T h i s i n c l u d e s both t h e d a t a
t r a n s p o r t
mechanism
a n d
t h e
i n t e r c o n n e c t i n g
c a b l e s
a n d
c o n n e c t o r s . One
embodiment
o f t h e
GMICS
r a n s p o r t u s e s
s t a n d a r d CAT5 c a b l e and RJ-45 c o n n e c t o r s .
O t h e r p h y s i c a l i n t e r f a c e s c a n i n c l u d e a h i g h - s p e e d m u l t i
l i n k
o p t i c a l i n t e r f a c e , W i r e l e s s ,
a n d a
p h y s i c a l
l a y e r
i n t e r f a c e
b a s e d
on
a neW
g i g a b i t
E t h e r n e t
p h y s i c a l
l a y e r . The
W i r e l e s s
a p p l i c a t i o n s
o f
a
GMICS
system
a r e
dependent
on
t h e
c u r r e n t c a p a b i l i t i e s a n d b i t d e n s i t y
o f a v a i l a b l e t e c h n o l o g y .
The h i g h
b a n d W i d t h
o p t i c a l
i n t e r f a c e s
a r e
i d e a l
f o r t r a n s
p o r t i n g l a r g e n u m b e r s o f GMICS c h a n n e l s
o v e r l o n g d i s
t a n c e s . T h i s i s v e r y u s e f u l i n l a r g e a r e n a s Where t h e
m i X i n g
c o n s o l e
o r
a m p l i ? e r s
may
e h u n d r e d s o f f e e t from t h e s t a g e
and r e q u i r e a n enormous number o f a u d i o c h a n n e l s . Phan
tom poWer i s n o t a v a i l a b l e f o r o p t i c a l - b a s e d
s y s t e m s .
E l e c t r i ca l I n t e r f a c e
The common i n t e r f a c e ,
G100TX, W i l l
t r a n s p o r t
G MICS
d a t a t h r o u g h
t h e l i n k
l a y e r p r o t o c o l u s e d i n 1 0 0
m e g a b i t
E t h e r n e t .
Data
i s encoded
W i t h
a 4 b i t / 5 b i t scheme
and
t h e n
s c r a m b l e d
t o
e l i m i n a t e RF h o t s p o t s , t h u s r e d u c i n g
e m i s
s i o n s .
T h i s
i s
a
W e l l - d o c u m e n t e d
a n d
t e s t e d
d a t a
t r a n s p o r t
W i t h
a
l a r g e
i n s t a l l e d
b a s e .
Of
t h e e i g h t
c o n d u c t o r s
i n a
s t a n d a r d C a t e g o r y
5
(CAT
)
c a b l e ,
o n l y f o u r
a r e u s e d f o r
d a t a
t r a n s p o r t . G100TX
s e s
t h e
f o u r
unused
c o n d u c t o r s t o
s u p p l y phantom poWer
f o r
i n s t r u m e n t s
t h a t c a n
o p e r a t e W i t h
l i m i t e d p o W e r .
G u i t a r s ,
drum t r a n s d u c e r s ,
a n d
m i c r o p h o n e s
a r e
e X a m p l e s o f s u c h d e v i c e s . P r e f e ra b l y , t h e
G 100TX
b a s e d GMICS
a t a l i n k s u p p l i e s up t o 500
mA t
9 v o l t s
DC
t o
t h e i n s t r u m e n t . The
Link
Host i n s u r e s
t h a t
t h e
GMICS
Link
poWer i s s a f e b o t h
t o
t h e
u s e r
and
t o
t h e e q u i p m e n t .
C u r r e n t l i m i t i n g
i s
done
s o
t h a t
t h e
s y s t e m W i l l
become
o p e r a t i o n a l a f t e r
a
s h o r t
c i r c u i t
h a s
been c o r r e c t e d .
F u s e s
t h a t n e e d r e p l a c e m e n t When t r i g g e r e d a r e
n o t
recommended.
The
GMICS
r o t o c o l i s d e s i g n e d t o a l l o W
t h e
u s e o f many
d i f f e r e n t p h y s i c a l t r a n s p o r t l a y e r s . T h e r e a r e a
feW
i m p o r t a n t
r u l e s
t h a t
must
b e f o l l o W e d
When
s e l e c t i n g
a
p o s s i b l e
t r a n s p o r t l a y e r f o r GMICS.
F i r s t ,
t h e t r a n s p o r t m u s t
h a v e
v e r y
loW
a t e n c y . GMICS
s
a
r e a l - t i m e
d i g i t a l
l i n k .
L a t e n c y
must n o t o n l y be
v e r y
l o W ,
on
t h e o r d e r o f a feW hundred
m i c r o s e c o n d s ,
b u t
m u s t a l s o b e d e t e r m i n i s t i c . S e c o n d ,
t h e
p h y s i c a l i n t e r f a c e m u s t b e
r o b u s t
enough t o f u n c t i o n
p r o p
e r l y i n a
l i v e
p e r f o r m a n c e e n v i r o n m e n t .
A i v e
e n v i r o n m e n t
may
i n c l u d e
h i g h
v o l t a g e / c u r r e n t c a b l e s
r u n n i n g
n e a r o r
bundled
With a
l i n k c a b l e . For
a l i n k t o
be
a c c e p t a b l e
i t
must
f u n c t i o n
p r o p e r l y
i n
t h i s h a r s h
e n v i r o n m e n t .
Data Link I n t e r f a c e
Data i s t r a n s m i t t e d
betWeen GMICS e v i c e s i n
t h e form
o f
d i s c r e t e
p a c k e t s
a t
a
s y n c h r o n o u s r a t e . The GMICS a t a
p a c k e t s
c o n t a i n
a
h e a d e r ,
1 6 a u d i o
d a t a p i p e s ,
a
h i g h - s p e e d
u s e r d a t a p i pe , t h e
GMICS
o n t r o l d a t a p i p e ,
a n d a n
o p t i o n a l
CRC-32. The
h e a d e r
c o n t a i n s a
p r e a m b l e ,
s t a r t
o f frame
b y t e , d a t a v a l i d
? a g s ,
s a m p l e r a t e ,
f r a m e c o u n t e r a n d
b u s
c o n t r o l
b i t s .
Audio d a t a p i p e s a r e 3 2 - b i t d a t a high Ways b etWeen tWo
GMICS d e v i c e s . The f o r m a t f o r t h e d a t a i n t h e p i p e i s
-
7/25/2019 U.S. Patent 6,353,169, entitled "Universal Audio Communications and Control System and Method", to Gibson, is
10/28
US
6 , 3 5 3 , 1 6 9
B1
7
i d e n t i ? e d i n
t h e
p a c k e t header
and
i n some c a s e s i n a 4 - b i t
n i b b l e
u s e d a s a t a g i n e a c h
d a t a p i p e .
Audio c a n b e
1 6 , 2 4 ,
2 8 o r
32
b i t s
o f
PCM u d i o d a t a . S p e c i ? c c o m p r e s s e d d a t a
f o r m a t s
a r e
a l s o s u p p o r t e d and
a r e i d e n t i ? e d i n t h e t a g . Each
i n d i v i d u a l
a u d i o p i p e c a n b e r e a s s i g n e d a s
32
b i t
d a t a i f
d e s i r e d ,
p r o v i d i n g
up
t o
1 6
e x t r a
d a t a c h a n n e l s ,
W i t h
t h e
c o r r e s p o n d i n g
n o n - a v a i l a b i l i t y
o f a u d i o c h a n n e l s .
The GMICS o n t r o l d a t a p i p e i s a highWay f o r GMICS
r e l a t e d
c o n t r o l m e s s a g i n g . T h e c o n t r o l p i p e c a n s h i p
mul
t i p l e
t y p e s o f
c o n t r o l
i n c l u d i n g M I D I , a l t h o u g h
n a t i v e
GMICS
o n t r o l s h o u l d b e u s e d . The c o n t r o l
p i p e
c o n t a i n s
a
c o n t r o l
t y p e b y t e , v e r s i o n ? e l d , 4 8 b i t s o u r c e a n d d e s t i n a t i o n
a d d r e s s s p a c e s , message ? e l d , and a
32 b i t d a t a
W o r d .
M a s t e r
T i m i n g C o n t r o l
I n o r d e r f o r a l l d e v i c e s W i t h i n t h e GMICS
y s t e m
t o
b e
p r o c e s s i n g
d a t a i n - p h a s e W i t h one
a n o t h e r ,
t h e r e must b e a
s i n g l e s o u r c e o f s y n c h r o n i Z a t i o n . T h i s s o u r c e
i s
c a l l e d
t h e
S y s t e m
T i m i n g M a s t e r
( S T M ) . I t
c a n b e a n y
n o n - i n s t r u m e n t
d e v i c e a n d
may
b e
s e l e c t e d
d u r i n g
t h e
s y s t e m
c o n ? g u r a t i o n
p r o c e s s . I f
no
d e v i c e i s con?gured a s
t h e
STM
one W i l l be
s e l e c t e d a u t o m a t i c a l l y
b a s e d
on
s y s t e m
h i e r a r c h y . I n
a
s i t u a t i o n
Where m u l t i p l e d e v i c e s
a r e
hooked
up a s a d a i s y
c h a i n ,
t h r e e r u l e s a r e p r e s e n t e d Which a l l o W s f o r a n
STM
o
a u t o m a t i c a l l y
b e
s e l e c t e d .
T h e
GMICS
p a c k e t t i m i n g
i s
s y n c h r o n o u s
t o
t h e a u d i o
s a m p l e r a t e o f
t h e
s y st e m . T h i s s a m p l e , o r p a c k e t , t i m i n g
i s
e i t h e r
l o c a l l y g e n e r a t e d , i n t h e c a s e
o f
t h e
STM, o r
r e c o v e r e d
a n d
r e g e n e r a t e d i n
a s l a v e d e v i c e . The t r a n s p o r t
c l o c k i s
a s y n c h r o n o u s t o t h e s a m p l e c l o c k a n d i s
o n l y
u s e d b y t h e
p h y s i c a l
l a y e r t r a n s p o r t m e c h a n i s m .
F I G . 4
i s
a
s i m p l i ? e d
b l o c k
diagram
o f a d e v i c e
i n t e r f a c e module
i n c l u d i n g a
GMICS
STM 2 3m
c o n n e c t e d
t o
a GMICS y s t e m t i m i n g
s l a v e
d e v i c e
2 3 s . The s l a v e
d e v i c e
2 3 s
u s e s
o n l y t h e
r e c o v e r e d a n d
r e g e n e r a t e d
s a m p l e c l o c k f o r e n c o d i n g /
d e c o d i n g t h e GMICS d a t a
p a c k e t s .
GMICS
o n t r o l
C o n t r o l i n f o r m a t i o n
i s a n
e s s e n t i a l f a c t o r
i n
i n s t r u m e n t
f u n c t i o n a l i t y . An i n t r i c a t e n a t i v e c o n t r o l p r o t o c o l
i s
u s e d i n
a GMICS s y s t e m .
GMICS
c o n t r o l r e v o l v e s around 48 b i t
a d d r e s s
s p a c e s
t h a t a r e d i v i d e d i n t h r e e 1 6 - b i t ? e l d s :
d e v i c e ,
f u n c t i o n , and p a r a m e t e r . T h i s
a l l o W s
f o r a c c e s s t o a
d e v i c e
a t m u l t i p l e l e v e l s . D e v i c e
a d d r e s s e s
a r e d e t e r m i n e d d u r i n g
e n u m e r a t i o n . The m a n u f a c t u r e r
o f
t h e d e v i c e d e t e r m i n e s t h e
o t h e r
tWo
a d d r e s s ? e l d s . T h i s
a l l e v i a t e s t h e
n e c e s s i t y t o
p r e d e ? n e
p a r a m e t e r
a n d
c o n t r o l l e r
m e s s a g e s a s
i s
done i n
MIDI
s y s t e m s . Devices can
q u e r y
f o r o t h e r d e v i c e a d d r e s s e s
a n d a s s o c i a t e d f r i e n d l y n a m e s
b y
u s i n g s y s t e m
c o n t r o l
m e s s a g e s . T h i s a l l o W s f o r c o m p l e t e c o n t r o l W h i l e s t i l l s u p
p o r t i n g
a n o n - t e c h n i c a l ,
u s e r - f r i e n d l y
i n t e r f a c e .
The
c o n t r o l t y p e
b y t e
a l l o W s non-GMICS c o n t r o l mes
s a g e s
a c c e s s t o
t h e
c o n t r o l p i p e o r c h a n n e l . C o n t r o l message
from
o t h e r s p e c i ? c a t i o n s c a n
b e
e n c a p s u l a t e d
i n
t h e 32 b i t
d a t a Word. MIDI
i s
one example o f
a
de?ned
a l t e r n a t e
c o n t r o l
t y p e .
D e v i c e C l a s s i ? c a t i o n
I n
t h e c a s e Where no c o n t r o l i n f o r m a t i o n
i s
being
s e n t ,
a
d e v i c e can
send a
d e v i c e c l a s s i ? c a t i o n message i n
p l a c e
o f
c o n t r o l d a t a . T h i s
m e s s a g e
p r o v i d e s i n f o r m a t i o n r e g a r d i n g
t h e f u n c t i o n a l i t y
a n d c a p a b i l i t i e s
o f t h e d e v i c e . Any o t h e r
device
i n a GMICS system
can use t h i s information a s
n e e d e d .
The
d e v i c e c l a s s i ? c a t i o n method i s e n c a p s u l a t e d
i n
t h e
3 2 - b i t
d a t a
W o r d .
C l a s s i c Mode
C l a s s i c
mode
i s a
means o f f u r t h e r i n c r e a s i n g t h e sim
p l i c i t y
a n d
u n i v e r s a l i t y
o f
a
G MICS
s y s t e m . C l a s s i c
mode
p r o v i d e s a s e t o f d e f a u l t
c h a n n e l a s s i g n m e n t s
f o r i n s t r u
m e n t s . This
W i l l
alloW f o r a n
unknown
d e v i c e t o poWer u p
i n
a
knoWn s t a t e p r o v i d i n g
a p o s i t i v e
i n i t i a l
u s e r e x p e r i e n c e .
D e v i c e s
c a n
a s s i g n c h a n n e l s i n
a n y f a s h i o n ,
b u t
a l l d e v i c e s
s h o u l d s u p p l y t h e c a p a b i l i t y o f b e i n g
i n
c l a s s i c m o d e , u n l e s s
1 5
25
35
45
55
6 5
8
o v e r r i d d e n by
a p r e v i o u s
c o n ? g u r a t i o n . C l a s s i c
mode
c a n
e x p a n d t o a l l o W
f o r
a u t o m a t i c c o n t r o l l e r a s s i g n m e n t ,
a n d
v a r i o u s o t h e r f e a t u r e s .
C l a s s i c mode a s s u r e s
t h a t
d e v i c e s poWer u p i n
knoWn
s t a t e s b y
p r o v i d i n g
d e f a u l t
a s s i g n m e n t s
f o r a l l c h a n n e l s .
Other d e v i c e s can
communicate by
d e f a u l t
on
knoWn
chan
n e l s .
D e f a u l t c h a n n e l
a s s i g n m e n t s
a r e
g i v e n
t o a l l a p p l i c a b l e
i n s t r u m e n t s . C l a s s i c mode
i n c r e a s e s
t h e
u n i v e r s a l i t y
a n d
s i m p l i c i t y o f GMICS n a Way t h a t G e n e r a l MIDI p r o v i d e s
a
common s e r
e x p e r i e n c e f o r t o n e g e n e r a t i o n . The
channel
a s s i g n m e n t s
d e s c r i b e d
i n
t h i s embodiment
a r e d e f a u l t s ;
o t h e r
c h a n n e l a s s i g n m e n t s
may b e u s e d
a t
t h e
d i s c r e t i o n o f
a d e v i c e m a n u f a c t u r e r , b u t any v a r i a t i o n W i l l c r e a t e incom
p a t i b i l i t i e s W i t h o t h e r C l a s s i c mode
d e v i c e s .
A c o u s t i c G u i t a r
C l a s s i c Mode
An
c o u s t i c
g u i t a r d e v i c e i n
a GMICS
y s t e m ma y h a v e
t h e f o l l o W i n g
d e f a u l t
c h a n n e l a s s i g n m e n t s :
A c o u s t i c G u i t a r C l a s s i c
Mode
( D e f a u l t
C h a n n e l A ss i g n m e n t s
f o r
A c o u s t i c
G u i t a r s )
Channel
( d e c i m a l )
A s s i g n m e n t
1 Mono u i t a r
( M o n o
P i c k u p )
2 M i c r o p h o n e
3-4
S t e r e o G u i t a r
5 - 1 0 Hex P i c k u p
11-16 Reserved
E l e c t r i c G u i t a r
C l a s s i c
Mode
An e l e c t r i c g u i t a r i n a
GMICS
s y s t e m
ma y
h a v e t h e
f o l l o W i n g d e f a u l t c h a n n e l a s s i g n m e n t s :
A c o u s t i c
G u i t a r C l a s s i c
Mode
( D e f a u l t
C h a n n e l A ss i g n m e n t s
f o r
A c o u s t i c
G u i t a r s )
Channel
( d e c i m a l )
A s s i g n m e n t
1-3 Mono
u i t a r
( 3 Mono
P i c k u p )
4 M i c r o p h o n e
5-6
S t e r e o G u i t a r
7 - 1 2
Hex
P i c k u p
13-16
Reserved
K e y b o a r d C l a s s i c Mode
E l e c t r o n i c k e y b o a r d s i n a GMICS y s t e m
may
h a v e
t h e
f o l l o W i n g d e f a u l t c h a n n e l a s s i g n m e n t s :
K e y b o a r d C l a s s i c Mode
( D e f a u l t
C h a n n e l A ss i g n m e n t s
f o r
A c o u s t i c
G u i t a r s )
Channel
( d e e i m a l )
A s s i g n m e n t
1 Mono
2 M i c r o p h o n e
3-4 S t e r e o
5-16 Reserved
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B1
S y s t e m M e c h a n i c a l D e t a i l
The GMICS Connector
G100TX GMICS
Link
The 1 0 0 m e g a b i t GMICS
a t a
l i n k (G100TX) u s e s t h e
i n d u s t r y s t a n d a r d
R J - 4 5
c o n n e c t o r
a n d
C a t e g o r y 5 c a b l e
a s
shoWn i n F I G .
5 . P r e f e ra b l y , t h e
c a b l e s
a n d
c o n n e c t o r s
W i l l
m e e t a l l r e q u i r e m e n t s
s e t
f o r t h i n t h e IEEE802.3 s p e c i ? c a
t i o n f o r 100BASE-TX s e .
GMICS G100TX S i g n a l s & o n n e c t o r P i n
A s s i g n m e n t
G100TX-based GMICS s e s a s t a n d a r d Category 5 c a b l e
f o r
d e v i c e i n t e r c o n n e c t i o n .
A
i n g l e c a b l e c o n t a i n s
f o u r
t W i s t e d
p a i r s . TWo p a i r s
a r e u s e d f o r d a t a t r a n s p o r t
a s
i n
100BASE-TX
e t W o r k c o n n e c t i o n . T h e r e m a i n i n g
t W o p a i r s
a r e
used
f o r
poWer.
S t a n d a r d
C a t e g o r y 5 p a t c h
c o r d s
a r e W i r e d o n e - t o - o n e .
T h i s means t h a t each c o n d u c t o r
i s
connected
t o
t h e same p i n
on both c o n n e c t o r s .
Acrossover
f u n c t i o n must be performed
W i t h i n one o f
t h e
connected d e v i c e s s o t h a t t h e d a t a t r a n s
m i t t e d
by o n e d e v i c e i s
r e c e i v e d
by
t h e o t h e r , a s
shoWn
i n
F I G . 5 .
Due
t o
t h i s r e l a t i o n s h i p , a GMICS system
h a s
tWo d i f
f e r e n t
c o n n e c t o r c o n ? g u r a t i o n s
f o r GMICS d e v i c e s . The
d i a g r a m
o f
F I G . 6
shoWs g u i t a r 1 2 ,
a n d e f f e c t
boX
2 4 , a n d
a n a m p l i ? e r 1 3 . T h e r e a r e
tWo p r e f e r r e d
c o n n e c t o r con?gu
r a t i o n s u s e d i n t h e s y s t e m ,
labeledAand
B n t h e t a b l e
beloW
A l l i n s t r u m e n t s
must
u s e
c o n n e c t o r
c o n ? g u r a t i o n A . Ampli
? e r s
and o t h e r d e v i c e s u s e c o n n e c t o r c o n ? g u r a t i o n
B
f o r
i n p u t s
f r o m
i n s t r u m e n t a n d c o n n e c t o r
c o n ? g u r a t i o n
A
o r
o u t p u t t o
o t h e r
d e v i c e s .
GMICS
o n n e c t i o n s a r e made
W i t h
C a t e g o r y 5 a p p r o v e d R J - 4 5 p l u g s a n d
j a c k s .
T h e f o l l o W i n g
t a b l e
l i s t s
t h e
s i g n a l s a n d c o n n e c t o r
p i n
numbers
f o r b o t h
t h e
A & B c o n n e c t o r c o n ? g u r a t i o n s .
TABLE
S i g n a l
a n d c o n n e c t o r
p i n n u m b e r s
T y p e
A
To Type
B
A m p l i ? e r
From I n s t r u m e n t
S i g n a l
Name
P i n P i n
TX D a t a + ( f r o m i n s t r u m e n t ) 1 3
TX
Data
( f r o m
i n s t r u m e n t ) 2 6
RX
D a t a
+
( t o
i n s t r u m e n t ) 3
1
RX
ata
( t o i n s t r u m e n t ) 6 2
Gnd
( I n s t r u m e n t
P h a n t o m P o w e r )
4 4
Gnd
( I n s t r u m e n t
P h a n t o m P o W e r )
5 5
V ( I n s t r u m e n t Phantom P o W e r ) 7 7
V
( I n s t r u m e n t Phantom P o W e r ) 8 8
The
p i n number a s s i g n m e n t s a r e c h o s e n t o i n s u r e
t h a t
s i g n a l s a r e t r a n s p o r t e d o v e r
t W i s t e d
p a i r s . The
t r a n s m i t
a n d
r e c e i v e s i g n a l s
u s e
t h e
same
p i n s t h a t
a c o m p u t e r s
netWork
i n t e r f a c e
c a r d ( N I C ) d o e s . The
tWo p a i r
o f W i r e s
n o t u s e d i n
s t a n d a r d 100BASE-TX
e t W o r k s
c a r r y phantom
p o W e r . T h i s
c o n n e c t o r
p i n a s s i g n m e n t i s
c h o s e n
t o
r e d u c e
t h e p o s s i b i l i t y
o f
damage
i f a GMICS d e v i c e i s d i r e c t l y p l u g g e d i n t o a
computer
netWork
c o n n e c t o r .
I n s t r u m e n t
Connectors
All instruments
connected t o a
GMICS system use
a
R J - 4 5 J a c k W i r e d
i n
t h e Type
A
o n ? g u r a t i o n .
T h i s
c o n n e c
t o r
i s
l a b e l e d
To A m p l i ? e r .
1O
25
35
45
55
6 5
1 0
TABLE
I n s t r u m e n t T y p e A
o n ? g p r a t i o n
RJ-45
P i n
To
Ampli?er Type A
on?guration
S i g n a l
Name
TX
D a t a + ( f r o m
i n s t r u m e n t )
TX
Data
( f r o m i n s t r u m e n t )
RX
D a t a + ( t o
i n s t r u m e n t )
RX ata
( t o
i n s t r u m e n t )
Gnd
( I n s t r u m e n t P h a n t o m
P o W e r )
Gnd
( I n s t r u m e n t P h a n t o m
P o W e r )
V
( I n s t r u m e n t Phantom
P o W e r )
V ( I n s t r u m e n t Phantom
P o W e r )
E f f e c t / A m p l i ? e r C o n n e c t o r s
E f f e c t BoXes and Ampli?ers
m a y
have more
t h a n one
GMICS o n n e c t o r . T h e r e a r e tWo
p o s s i b l e
c o n ? g u r a t i o n s f o r
t h e s e GMICS
o n n e c t i o n s . I n p u t s
from
i n s t r u m e n t s
t o t h e
e f f e c t boX o r a m p l i ? e r a r e W i r e d i n
t h e Type
B c o n ? g u r a t i o n
a n d
s h o u l d
b e
l a b e l e d
From
I n s t r u m e n t .
O u t p u t
from
t h e
e f f e c t boX o r a m p l i ? e r s h o u l d b e W i r e d i n
t h e
Type A
c o n ? g u ra t i o n a n d
l a b e l e d
T o A m p l i ? e r .
TABLE
E f f e c t / A m p T y p e
B
c o n ? g u r a t i o n
From Instrument
Type
B
C o n ? g u r a t i o n
S i g n a l Name
RJ-45
P i n
TX
D a t a +
( f r o m
i n s t r u m e n t )
TX
Data
( f r o m
i n s t r u m e n t )
RX D a t a + ( t o
i n s t r u m e n t )
RX
D a t a
( t o i n s t r u m e n t )
Gnd
( I n s t r u m e n t
P h a n t o m P o W e r )
Gnd ( I n s t r u m e n t
P h a n t o m
P o W e r )
V+ ( I n s t r u m e n t P h a n t o m P o W e r )
V+ ( I n s t r u m e n t P h a n t o m P o W e r )
A l l c o n n e c t o r s
t h a t c a n r e c e i v e i n p u t d i r e c t l y from
a n
i n s t r u m e n t u s e
a n RJ-45
j a c k W i r e d i n a
Type B con?gura
t i o n .
E f f e c t Z A m p T y p e A
c o n ? g u r a t i o n
RJ-45
P i n
To
Ampli?er Type A on?guration
S i g n a l
Name
TX
D a t a
+ ( f r o m
i n s t r u m e n t )
TX
Data ( f r o m i n s t r u m e n t )
RX
D a t a + ( t o
i n s t r u m e n t )
RX ata
( t o i n s t r u m e n t )
Gnd ( I n s t r u m e n t
P h a n t o m
P o W e r )
Gnd ( I n s t r u m e n t P h a n t o m
P o W e r )
V ( I n s t r u m e n t
Phantom
P o W e r )
V
( I n s t r u m e n t Phantom
P o W e r )
A l l o t h e r c o n n e c t i o n s u s e
a
RJ-45 j a c k Wired
i n a
Type A
c o n ? g u r a t i o n .
Dominant Data FloW
The t e r m s
To
Ampli?er
a n d
From I n s t r u m e n t n o t o n l y
r e f e r
t o
t h e t y p i c a l
p h y s i c a l
c o n n e c t i o n s b u t a l s o
t h e
domi
n a n t d a t a ?oW. While t i s
t r u e
t h a t t h e GMICS r o t o c o l i s
a
s y m m e t r i c a l
b i - d i r e c t i o n a l
i n t e r c o n n e c t
t h e r e
i s
a l m o s t
a l W a y s a dominant d i r e c t i o n t o t h e d a t a ?oW. I n a
s i m p l e
GMICS s y s t e m
c o n s i s t i n g
o f
a
m u s i c a l
i n s t r u m e n t ,
a n
e f f e c t s b o X ,
a n d
a n
a m p l i ? e r ,
t h e d o m i n a n t d a t a d i r e c t i o n i s
from t h e i n s t r u m e n t t o t h e e f f e c t s boX t h e n on t o t h e
a m p l i ? e r , a s shoWn
i n
F I G . 8 .
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B1
1 1
I n t h e s e c o n d
e x a m p l e
o f F I G . 8 ,
t h r e e
i n s t r u m e n t s
( t W o
g u i t a r s 1 2 a n d
a microphone
1 4 ) a r e
c o n n e c t e d
t o t h r o u g h a n
a m p l i ? e r
13 t o a mixer 2 5 t h a t i s
c o n n e c t e d
t o a r e c o r d i n g
d e v i c e
2 6 . The
r e c o r d i n g d e v i c e
26
d o e s n o t h a v e a
domi
n a n t d i r e c t i o n o f d a t a ? o W .
While
r e c o r d i n g ,
t h e
d o m i n a n t
d i r e c t i o n
i s
t o
t h e
r e c o r d e r
26
W h i l e
i t
i s
from
t h e
r e c o r d e r
2 6 d u r i n g p l a y b a c k . F o r c l a r i t y i n
d e s c r i b i n g a
GMICS
s y s t e m , a r e c o r d i n g d e v i c e
26
W i l l alWays be t r e a t e d
a s
a n
i n s t r u m e n t
i n t h a t
t h e dominant
d a t a ?oWs from t h e r e c o rd e r .
S p e c i a l C o n s i d e r a t i o n s
S p e c i a l c o n s i d e r a t i o n s
n e e d
t o b e made
When
s e l e c t i n g RJ
t y p e co n n e c t o r s f o r u s e W i t h
GMICS.
T h e s e s p e c i a l r e q u i r e
ments
a r e due
t o t h e f a c t t h a t GMICS enabled devices
a r e
u s e d i n l i v e p e r f o r m a n c e a p p l i c a t i o n s b y
m u s i c i a n s
a n d m u s t
b e
r e l i a b l e
a n d r e s i l i e n t .
S e v e r a l p h y s i c a l s u p p o rt s e x i s t t h a t a u g m e n t t h e s t a n d a r d
R J - 4 5 c o n n e c t o r . T h i s
i n c l u d e s t h e
a d d i t i o n o f l o c k i n g c l i p
p r o t e c t i o n f o r
t h e
R J - 4 5
c o n n e c t o r s . I n a d d i t i o n , c a b l e
m a n u f a c t u r e r s c a n
make
s p e c i a l l y d e s i g n e d c a b l e
e n d s
t h a t
h e l p t h e l o c k i n g c l i p f r o m b r e a k i n g . W i t h o u t some s o r t
o f
p r o t e c t i o n t h e s e
l o c k i n g
c l i p s
c a n b e
o v e r - s t r e s s e d
a n d
b r o k e n . Once t h e l o c k i n g c l i p i s b r o k e n t h e c o n n e c t o r W i l l
n o t
s t a y
p r o p e r l y
s e a t e d
i n
t h e m a t i n g j a c k a n d t h e
c o n n e c
t i o n W i l l b e u n s a t i s f a c t o r y .
Mechanical
s t r e s s on t h e
RJ-45
j a c k must be a l s o
con
s i d e r e d
When d e s i g n i n g
G MICS
e n a b l e d
d e v i c e s .
The l o c k
i n g n a t u r e o f t h e R J - 4 5 o f f e r s
a d v a n t a g e s
a n d d i s a d v a n t a g e s .
T h e p o s i t i v e l o c k i n g p r o v i d e s p r o t e c t i o n a g a i n s t
a c c i d e n t a l
u n p l u g g i n g .
H o W e v e r ,
t h e
R J - 4 5 W i l l
n o t a u t o m a t i c a l l y
r e l e a s e
( a s
W i l l
a
s t a n d a r d
1 A
g u i t a r c a b l e ) When t h e
c a b l e
i s c o m p l e t e l y s t r e t c h e d o r becomes t a n g l e d .
T h e r e f o r e
i t i s
recommended t h a t
t h e
R J - 4 5 j a c k a n d m e c h a n i c a l a s s e m b l y
b e
a b l e t o
W i t h s t a n d r e p e a t e d
t u g s
o f t h e c a b l e W i t h o u t
p h y s i c a l
o r e l e c t r i c a l
d a m a g e .
The
GMICS
a b l e
GMICS G100TX
n t e r c o n n e c t C a b l e
G100TX-based GMICS d e v i c e s
u s e
i n d u s t r y s t a n d a r d
c o m p u t e r
n e t W o r k i n g
c a b l e s f o r b o t h s i g n a l a n d p o W e r .
T h e
G 100TX
d a t a l i n k i s
d e s i g n e d t o
u s e
s t a n d a r d
C a t e g o r y 5
p a t c h c a b l e s o f
l e n g t h s
u p
t o 5 0 0 f t .
A c c e p t a b l e
C a t 5
c a b l e s
m u s t
i n c l u d e
a l l f o u r t W i s t e d p a i r s ( 8 W i r e s ) . E a c h
c o n d u c t o r
must c o n s i s t o f s t r a n d e d W i r e and be 24
gauge
o r l a r g e r . The
c a b l e and c o n n e c t o r s
must
meet a l l r e q u i r e m e n t s
f o r
100BASE-TX netWork u s a g e . I t s h o u l d b e n o t e d t h a t
GMICS
u s e s
t h e s t a n d a r d c o m p u t e r - t o - h u b
CAT 5 p a t c h
c o r d s , n o t t h e s p e c i a l
c o m p u t e r - t o - c o m p u t e r
c a b l e s . The
GMICS a b l e i s alWays Wired a s a o n e - t o - o n e a s s e m b l y .
T h e
f o l l o W i n g t a b l e
s h o W s
t h e
c o n n e c t o r / c a b l e W i r i n g
f o r
a
GMICS
G100TX n t e r c o n n e c t C a b l e .
TABLE
C o n n e c t o r / c a b l e W i r i n g
S i g n a l Name T w i s t e d p a i r C o n n e c t o r p i n
Tx
D a t a +
( f r o m
i n s t r u m e n t )
Tx
Data
(from
i n s t r u m e n t )
Rx D a t a + ( t o
i n s t r u m e n t )
Rx
ata
( t o i n s t r u m e n t )
Gnd ( I n s t r u m e n t
P h a n t o m
P o w e r )
Gnd ( I n s t r u m e n t
P h a n t o m
P o W e r )
V ( I n s t r u m e n t
Phantom
P o W e r )
V ( I n s t r u m e n t
Phantom
P o W e r )
S p e c i a l C o n s i d e r a t i o n s
T h e r e a r e s p e c i a l
c o n s i d e r a t i o n s
t o be made When s e l e c t
i n g C a t e g o r y 5 c a b l e s f o r u s e
W i t h
G100TX.
T h e s e
s p e c i a l
r e q u i r e m e n t s
a r e due
t o t h e
f a c t t h a t GMICS
n a b l e d
d e v i c e s
a r e u s e d i n l i v e p e r f o r m a n c e
a p p l i c a t i o n s , W h i c h
p l a c e
10
1 5
25
35
45
55
6 5
1 2
a d d i t i o n a l
r e q u i r e m e n t s o n t h e c a b l e ,
compared t o s t a n d a r d
o f ? c e netWork i n s t a l l a t i o n s .
One
c o n s i d e r a t i o n Would
be
t o
use a
c a b l e
t h a t
i n c l u d e s
p r o t e c t i o n f o r
t h e
l o c k i n g c l i p o f
t h e
R J - 4 5 c o n n e c t o r s .
W i t h o u t
t h i s p r o t e c t i o n
t h e
l o c k i n g
c l i p s c a n b e o v e r
s t r e s s e d
a n d
b r o k e n .
Once
t h e
l o c k i n g
c l i p
i s
b r o k e n
t h e
c o n n e c t o r
W i l l
n o t
s t a y p r o p e r l y
s e a t e d i n
t h e
m a t i n g
j a c k .
A
e c o n d
c o n s i d e r a t i o n
i s t h e ? e x i b i l i t y a n d f e e l
o f
t h e
c a b l e i t s e l f . The s e l e ct e d c a b l e
s h o u l d h a v e g o o d
? e x i b i l i t y
a n d b e
c o n s t r u c t e d
s u c h t h a t
i t
W i l l W i t h s t a n d t h e normal
a b u s e e x p e c t e d d u r i n g l i v e p e r f o r m a n c e s . U n l i k e
m o s t n e t
Work
i n s t a l l a t i o n s
t h e c o n n e c t i n g c a b l e i n a G 100TX s y s t e m
W i l l e x p e r i e n c e much
t W i s t i n g a n d
t u r n i n g
t h r o u g h o u t i t s
l i f e . F o r t h e s e r e a s o n s ,
s t r a n d e d
CAT5 c a b l e i s r e q u i r e d f o r
GMICS p p l i c a t i o n s . S o l i d W i r e
CAT5
W i l l f u n c t i o n c o r
r e c t l y i n i t i a l l y , b u t W i l l f a i l more o f t e n . I t s h o u l d b e n o t e d
t h a t c a b l e s must be hooked
from A
onnectors t o B
C o n n e c t o r s , n o t A o A
r B
o
B .
A
MICS ystem s h o u l d
n e v e r
be Wired
i n such
a
f a s h i o n t h a t
any l o o p s e x i s t .
A l s o ,
t h e p i n a s s i g n m e n t s
d e s c r i b e d W i t h r e f e r e n c e t o
t h i s
embodiment
r e
e x e m p l a r y
o n l y
a n d
may
e
v a r i e d
d e p e n d
i n g
on t h e c h o i c e o f
c a b l e and
c o n n e c t o r .
D e v i c e D e ? n i t i o n s
GMICS i s designed t o f u n c t i o n on tWo l e v e l s :
a s
a
d a i s y - c h a i n e d
system
o r a s a h u b - c e n t r i c
s y s t e m .
The f o l
l o W i n g
s e c t i o n s
g i v e m e c h a n i c a l d e ? n i t i o n s o f d e v i c e s t h a t
m a y be c o n t a i n e d i n a GMICS y s t e m . A l l GMICS e v i c e s
s h o u l d f o l l o W
t h e
f o l l o W i n g
r u l e : No
d e v i c e i n a GMICS
system s h o u l d
c o n t a i n more t h e n one t y p e A
o n n e c t o r ( T o
A m p ) .
I n s t r u m e n t s
I n s t r u m e n t s
( g u i t a r s ,
k e y b o a r d s , e t c . ) a r e de?ned
a s
a n y
d e v i c e t h a t c o n t a i n s
a t y p e
A T o Amp)
c o n n e c t o r o n l y . I t
s h o u l d b e n o t e d t h a t t h e GMICS
e ? n i t i o n o f
a n i n s t r u m e n t
g o e s
beyond
t h e
t r a d i t i o n a l
d e ? n i t i o n
o f m u s i c a l
i n s t r u
ments. I t i s p o s s i b l e
f o r a
device s uc h
a s
an ampli?er o r
a
s i g n a l
p r o c e s s o r
t o o n l y c o n t a i n a t y p e A o n n e c t o r a n d
t h e r e f o r e be c o n s i d e r e d a n i n s t r u m e n t a c c o r d i n g t o t h e
above d e ? n i t i o n . I n
s u c h
a s i t u a t i o n a h u b Would
b e
r e q u i r e d
t o
c o n n e c t a g u i t a r t o t h e
a m p l i ? e r .
S i g n a l P r o c e s so r s
S i g n a l P r o c e s s o rs ( s t o m p b o x e s ,
e f f e c t s
p r o c e s s o r s , e t c . )
s h o u l d
g e n e r a l l y
h a v e
o n e B
(From
I n s t r u m e n t )
a n d o n e
A
( T o
Amp)
c o n n e c t o r . T h i s d e ? n i t i o n i s n e c e s s a r y t o a l l o W f o r
s i g n a l
p r o c e s s i n g d e v i c e s
t o f u n c t i o n i n b o t h
a
d a i s y c h a i n
s e t u p and
a
h u b - c e n t r i c s y s t e m .
A m p l i ? e r s
Ampli?ers
can
e i t h e r
be s e e n a s t h e end p o i n t o f
a
d a i s y
c h a i n s y s t e m ,
o r a s
a n o t h e r d e v i c e c a p a b l e o f b e i n g
con
n e c t e d
t o a h u b . I f
a n
ampli?er
i s c o n s i d e r e d
an end p o i n t
d e v i c e ,
t h e n
i t
W i l l c o n t a i n o n l y
o n e
t y p e B c o n n e c t o r (From
I n s t r u m e n t ) . An a m p l i ? e r t h a t i s
t o
b e u s e d W i t h h u b s
s h o u l d
g e n e r a l l y
h a v e o n e
t y p e
B ( F r o m I n s t r u m e n t ) a n d o n e t y p e
A
T o
Amp)
c o n n e c t o r .
H u bs
Hubs
s h a l l
g e n e r a l l y h a v e m u l t i p l e t y p e
B
( F r o m
I n s t r u m e n t ) c o n n e c t o r s a n d
u p
t o o n e t y p e
A
T o Amp)
connector
f o r
connection
t o
a n o t h e r h u b . H u b s
can have
e i t h e r
d a i s y
c h a i n
s y s t e m s
o r
s i n g l e d e v i c e s c o n n e c t e d t o
t h e m .
S y s t e m
E l e c t r i c a l
D e t a i l
GMICS
P h y s i c a l LayerG100TX
I E E E 8 0 2 . 3
c o m p a t i b i l i t y
The
common
GMICS
d a t a l i n k p h y s i c a l l a y e r
(G100TX)
i s
b a s e d
on t h e
100BASE-TX E t h e r n e t p h y s i c a l l a y e r
a s
d e s c r i b e d
i n
t h e IEEE802.3 S p e c i ? c a t i o n . While mu c h o f
t h e I E E E 8 0 2 . 3 s p e c i ? c a t i o n
i s r e l e v a n t ,
s p e c i a l
a t t e n t i o n
s h o u l d b e
p a i d t o
t h e
f o l l o W i n g
c l a u s e s :
-
7/25/2019 U.S. Patent 6,353,169, entitled "Universal Audio Communications and Control System and Method", to Gibson, is
13/28
US
6 , 3 5 3 , 1 6 9
B1
1 3
7 .
P h y s i ca l S i g n a l i n g
( P L S ) a n d A t t a c h m e n t U n i t
I n t e r
f a c e ( A U I ) s p e c i ? c a t i o n s
2 1 .
I n t r o d u c t i o n
t o
1 0 0
Mb/s b a s e b a n d
n e t w o r k s ,
t y p e
100BASE-T
2 4 .
P h y s i c a l
C o d i n g S u b l a y e r ( P C S ) a n d
P h y s i c a l
Medium
Attachment
(PMA)
s u b l a y e r , t y p e
100BASE-X
GMICS G100T'X/IEEE802.3
D i f f e r e n c e s
T h e
GMICS d a t a l i n k
P h y s i c a l
L a y e r i s a l W a y s o p e r a t e d
a t
1 0 0 m e g a b i t s p e r s e c o n d i n t h e
f u l l d u p l e x
mode.
M u c h
o f
t h e f u n c t i o n a l i t y
o f
a s t a n d a r d
1 0 / 1 0 0 m e g a b i t
p h y s i c a l
l a y e r i m p l e m e n t a t i o n
i s
d e d i c a t e d
t o
d e t e c t i n g
a n d s W i t c h i n g
modes
a n d
i s n o t r e q u i r e d f o r G100TX.
T i m i n g P a r a m e t e r s
S a m p l e C l o c k R e c o v e r y
R e c o v e r i n g
t h e
s a m p l e c l o c k f r o m a n y
d i g i t a l
l i n k
i s o f
c r i t i c a l c o n c e r n t o t h e
d e s i g n e r .
I n GMICS h e s a m p l e c l o c k
i s
based on t h e r e c o v e r e d frame
r a t e
and n o t t h e
d a t a
t r a n s m i s s i o n r a t e o v e r
t h e
p h y s i c a l
medium.
The
j i t t e r
p e r f o r m a n c e
r e q u i r e d
f o r a
s p e c i ? c
a p p l i c a t i o n
m u s t
b e
t a k e n i n t o
a c c o u n t When
d e s i g n i n g
t h e s a m p l e
r a t e
r e c o v e r y
c i r c u i t s . F o r
h i g h
q u a l i t y A/D & /A
o n v e r s i o n
j i t t e r s h o u l d
n o t e x c e e d 500 p S .
I t
i s i m p e r a t i v e t h a t
t h e
r e c o v e r e d s a m p l e c l o c k
i s
l o c k e d
t o t h e
i n c o m i n g
s a m p l e r a t e , a n d i t i s a l s o d e s i r a b l e t h a t
a l l
d e v i c e s o p e r a t e i n
p h a s e W i t h e a c h
o t h e r . T h i s W i l l i n s u r e
t h a t a l l d e v i c e s
a r e
p r o c e s s i n g d a t a i n
a
synchronous m a n n e r .
O n l y o n e
d e v i c e
may
s u p p l y
s a m p l e t i m i n g f o r a l l
d e v i c e s
i n
a GMICS
a t a l i n k o r
s y s t e m . The
o n l y
e x c e p t i o n
t o
t h i s
r u l e Would be a d e v i c e
W i t h sample
r a t e
c o n v e r s i o n
c a p a
b i l i t y . The m a s t e r
t i m i n g
s o u r c e
s h a l l
g e n e r a t e GMICS
p a c k e t s
on a l l
i t s
GMICS i n k s W i t h a
maximum
p a c k e t
t o - p a c k e t
j i t t e r o f 1 2 0
n s e c .
A l l o t h e r d e v i c e s m u s t g e n