Classroom Digital Conversion...Blu-Ray Disk player Commercially sold Blu-ray Disk Standard Def after...
Transcript of Classroom Digital Conversion...Blu-Ray Disk player Commercially sold Blu-ray Disk Standard Def after...
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Classroom Digital Conversion
will begin shortly
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Jeffrey Donahue Webinar Moderator
Binghamton University (Retired)
Classroom Digital Conversion
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Sandra Miller, Chair
William Paterson University
Jeffrey B. Donahue,
Binghamton University (Retired)
Kathleen Dooley
Midwestern University
Willie Franklin
Otterbein University
Mark McCallister
University of Florida
Mark Ramsden
Le Moyne College
Aileen Scales
Indiana University
Robert Schmitt
Portland Community College
Susan M. Zvacek
University of Kansas
Professional Development Committee
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• Good technical understanding of what it means to
convert a room from an analog to a digital signal
• Understanding of the benefits and the potential hazards
• Tangible “takeaways”
Goals of Webinar
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• Each panelist has prepared a 20 minute presentation and
will take a few questions at the end of their presentations
• Please enter questions in the text boxes at the lower left
corner
• All presenters will participate in a panel discussion at the
end where you can submit questions for all to answer
• If you are experiencing audio problems, run the Audio
Setup Wizard under the meeting tab or call (812) 855-2064
How To Participate
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Panelists
Matthew Silverman Project Manager
Learning Space Design
George Mason University
Tim Schnabel Director of Education Programs
Extron Electronics
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Tim Schnabel Director of Education Programs – Higher Education
Extron Electronics
Digital Conversion
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Overview
• Industry Reason for the change
• Analog & Digital Signal Characteristics
• Find opportunity through change
• Factors to consider in decisions
• Resources moving forward
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What has happened
• Broadcast TV in the U.S. has transitioned from analog NTSC to digital ATSC.
• New video technology in displays devices, video sources including 3D formats are digital in nature.
• HDMI, DVI and Display port are becoming standard in most equipment.
• What is driving this in the classroom?
– $, better image, higher resolutions
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Impact of Analog Sunset to
Video Outputs
Video Source Device Content Displayed Analog Outputs Status
Blu-Ray Disk player Commercially sold Blu-ray Disk Standard Def after 2010, disabled after 2013
PC Commercially sold Blu-ray Disk Standard Def after 2010, disabled after 2013
PC Protected content e.g. iTunes Depends on the individual agreements between
service provider and content owner
PC Non-protected content No requirement to disable
Satellite/ Cable TV Box Subscribed channels May not be disabled in the U.S.
Satellite/ Cable TV Box Video on demand
In the U.S., only disabled for new services offering
first run movies for 90 days or before availability of
disk
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• August, 2012 - AMD, Dell, Intel Corporation, Lenovo,
Samsung and LG Display announce intentions to accelerate
adoption of scalable and lower power digital interfaces
• August, 2012 - Intel plans to end support of VGA in 2015 in its
PC client processors and chipsets. AMD plans to remove native
VGA output starting in 2013
• PC and display manufacturers seem to be indicating the future
is HDMI and DisplayPort starting in 2013
Source Connections - Future
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Digital Video Characteristics
• Synchronous
– Must transition at specific intervals
determined by the clock
• Signal swing
– The difference between high and low
values
• Clock period
– The minimum allowable time between
transitions Digital Data Parameters
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Analog & Digital Video Formats
• Analog Video
– With Analog video, using an interface we “pushed” the
signal to the destination
– The signal is “One Way”
• Digital Video
– With Digital Video, we recover the signal at the
destination, either in the destination or with the use of
an external device
– The signals can go “Two-Way”
• Video flows 1 direction
• Data Flows in both directions
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Analog & Digital Signal Shapes
• With analog video signals the
shape is important
– Amplitude = intensity
– Rise and fall times = sharpness
• With digital video signals Bit
Errors are important
– Can the receiving circuit properly
identify a data bit as being high or
low
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Digital Video Characteristics - Loss
• Difficult to anticipate
– Image quality does not
degrade like analog
• Cliff effect
– Occurs when the receiver
can no longer distinguish
high and low values
• Too many bit errors have
occurred
No image
=
=
=
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Digital Video Characteristics - Variables
• There is no way to determine a device’s sensitivity
– This information is not listed in the product’s specifications
The manufacturer may not even
know or test this
Poor Good Excellent
Poor
Good
Excellent
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Interoperability
• The emphasis going forward is to build
products that establish the best in
Interoperability.
– Working with equipment that might not exactly
follow the specifications
Distribution
Amplifier
Switcher
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Making the Choice A/D or Both?
• New signal types are continually introduced
• Sources and displays are rarely replaced at the
same time
– New sources like Blu-ray players or higher end
computers may need to remain compatible with
displays and projectors
– New high resolution flat panels and projectors may
need to remain compatible with order sources such
as VCR recorders and DVD players
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The Toughest Question
A. Stick with tried and true analog for now?
B. Build a D/A hybrid system that mixes?
C. Build tomorrow’s system today with all digital
with some provision for legacy analog?
• It Depends!
• Application, budget, specialization, systematic
change factors.
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Impact of Higher Resolution
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Selecting the Right Signal Distribution
Infrastructure
• Needs assessment of the overall goals of the Institution
– Total Distance locally? - Any Remote locations?
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So you want to go Digital?
• Define your sources
– Digital and / or analog
• What resolutions? 1080p, UWXGA, WUXGA
• HDCP Consideration for Blue Ray and cable
or satellite broadcasts
– Displays and entire signal path must me HDCP
compliant.
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Factors that lead up to signal
distribution decisions • Local or sharing of content and resources
• Local distance requirements – Will it interface to a system
• Will legacy equipment need to be supported until a technology upgrade is rolled out to the campus?
• Age, size and type of facility is it
• What if any limitations to cabling are there?
• What are my audio requirements?
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Design for Reliability
• Select the Right Components
– Look for reputable manufacturers with reliable
support system in place
• Reduce the number of potential failure points
• Plan for ongoing support
• Design using a scalable approach
– Defined as the capability to expand an existing
system as the classroom operational needs change
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The Big 4 in Digital Performance
• Signal Integrity
– As data rates go even higher & signal paths
become more complex
• Device Compatibility - EDID
• Content Protection
• Quick Switching
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Supporting Documents
www.extron.com/digital
• Digital Design Guide
• HDCP - Technical
Overview
• Understanding EDID
• ABC’s of Digital
Video
• DRM for the A/V
Professional
• Analog Sunset
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Tim Schnabel Director of Education Programs
Extron Electronics
Jeffrey Donahue Webinar Moderator
Binghamton University
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Matthew Silverman Project Manager
Learning Space Design
George Mason University
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Making the Move to
Digital AV Classrooms
at
George Mason University
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Overview
• Decision Factors in Going Digital
• Planning for Digital
• Round One of Digital Installations
• Status of Digital Classrooms at George Mason Today
• Planning for the Future
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External Pressures (2009)
• Analog Sunset and Blu-Ray
• DRM
• End of VGA
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Internal Thoughts (2009)
• Supporting faculty and students with the
devices they bring
• New classroom building coming online in
January 2011
– AV systems planning begun in 2009
– AV systems need to last 5-7 years
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Transitioning from
Analog to Digital Report • Held faculty focus groups to review baseline functional
requirements for a technology enhanced classroom
• Solicited feedback from various advisory groups on required functionality
• Goals: – Validate current functional sources in the baseline
University TECs
– Identify additional digital sources required to be added to classrooms to support this transition
– Validate DoIT direction of selecting 1280 x 800 resolution as the next step from XGA (1024 x 768)
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Baseline Digital Classroom
Functional Model
Computer
Doc Cam
Aux RGB
Aux HDMI
Aux Comp. Video
AV System
Best Way
Best Way Audio
Best Way
RGB
HDMI
Video
1
2
3
4
5
Analog Audio
Projector
(1280 x 800)HDMI 1
Monitor
(1280 x 800)HDMI 2
Audio Sub-System
(Additional audio
elements above, where
audio follows video)
Aux 1/8" StereoA-1
Analog AudioAux RCA StereoA-2
Analog AudioLav MicA-3
Analog AudioHandheld MicA-4
Stereo ProgramAnalog Audio A-1
Mono SpeechAnalog Audio A-2
Mono ADAAnalog Audio A-3
VHS/DVD Combo
DisplayPort
BluRay Player
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Architecture Options Report
• Limited to shipping technology in December
2009
• Evaluated 4 different solutions options:
– Crestron QuickMedia (existing George Mason
Design) & DigitalMedia for HDMI only
– Crestron DM-MD6X1 based system
– Crestron DM-MD8X8 based system
– Kramer Switcher with Extron Cat5 HDMI solution
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Features Scorecard 1: QM + DM 2: DM-MD6X1 3: DM-MD8X8 4: Kramer/Extron
Allows Reuse of Existing AV equipment Yes No No No
Allows Reuse of Existing Instructor Furniture Yes Maybe No Maybe
HDMI Preview No Yes Yes No
Option to Add Installed Blu-ray Player No Yes Yes No
Expandable No Limited (Inputs
Only) Yes No
Conduit Requirements (Lectern to Projector)
(1 = Greatest, 4 = Least) 1 2 2 4
Availability of Total System Diagnostic Tools
(1 = Greatest, 4 = Least) 3 2 1 4
Estimated Baseline Systems Cost $17,000 $19,000 $22,000 $18,000
Option 3 Was Selected
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Building Our First Digital Systems
• Developed prototype systems in a lab setting
– Added DVD/VHS to baseline design at the request
of IT Management
• 2 Days of onsite training for all classroom
support staff by Crestron
– Primary integrator was included in training
• 20 Digital classrooms installed
– 6 by Integrator, 14 by George Mason Staff
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Lessons Learned • Staff training should be focused on supporting the
system more than on compressive knowledge of digital technology (how, not why)
• Management needed to do a better job to sell the need for digital to the line staff
• University staff often knows more about digital technology than integrators
• On a technical level, we should have focused more on EDID than HDCP
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Building Our Own Support Tools
http://nextedutech.com/?p=112
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University Classroom
Technology Standards
• First version published 6/2010
• Goals: – A common, consistent and pedagogically-sound learning
environment across all campuses for faculty, staff and students
– Adaptability of design to address specific instructional needs
– Consistent functionality and interfaces across all campuses and all classrooms
– Reliable systems with high up-time
– Easy management and support of systems and equipment
• http://doit.gmu.edu/staffSection.asp?page=ucts
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George Mason Digital
Classroom Architecture
George Mason University Classroom Standards
DM-MD8X8
DM-Baseline
DM- Mac
DM-Speech
DM-Seminar DM-Dual
DM-Solo
DM-MD16X16
DM-VC
DM-TREC
Unique
DM-Collaborative
DM-MPS-300-C
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DM-Baseline/Speech
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DM-Seminar
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DM-Dual
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DM-VC
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Digital Classrooms at
George Mason Today
210 classrooms supported by central IT:
– 87 Digital AV Systems
– 82 Analog AV Systems
– 41 Non-Technology Classrooms
Scheduled summer 2012 upgrades:
– 13 Analog to Digital Refreshes
– 3 New Digital Classrooms
George Mason
Classrooms
Digital
Analog
Non-Tech
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Planning for the Future
• All-in-One Digital AV
Systems
• Interoperable Digital AV
Formats
• Wireless Digital Capable
Formats
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Interoperable Digital AV Formats
• Mobile High-Definition Link (MHL) – Connector agnostic technology which can connect mobile devices
(phones) to larger displays and provide HD video, audio and device charging over a single cable
– http://mhlconsortium.org/
• HDBaseT – Carries Video, Audio, Ethernet, PoE and control over category cable
– Based on Valens Semiconductor Technology; AMX, Altinex, Crestron, Extron, and Gefen are all alliance members
– http://hdbaset.org
• Audio Visual Bridging (AVB aka AVnu aka IEEE802.1BA) – IEEE standard for moving AV over packet switched networks
– http://www.avnu.org/
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Wireless Digital Capable Formats
• WHDI (Wireless Home Digital Interface) – Amimon’s hardware based solution in the 5GHz band, HDMI compatible
– http://www.whdi.org/
• WirelessHD – Wireless format in the 60GHz band, HDMI compatible
– http://www.wirelesshd.org/
• WiGig – Wireless format using the 2.4, 5 & 60 GHz bands, HDMI compatible
– http://wigig.org/
• WiDi – Intel’s WiFi based solution
– http://www.intel.com/content/www/us/en/architecture-and-technology/intel-wireless-
display.html
• AirPlay – Apple’s WiFi based solution; requires an AppleTV for full AV support
– http://www.apple.com/ipad/features/airplay.html
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Thank You!
• Matthew Silverman
– Project Manager, Learning Space Design
– George Mason University
– 703-993-3444
– Blog: http://nextedutech.com
– Podcast: http://bit.ly/AVNationEdtech
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Jeffrey Donahue Webinar Moderator
Binghamton University
Matthew Silverman Project Manager
Learning Space Design
George Mason University
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Tim Schnabel Director of Education Programs
Extron Electronics
Jeffrey Donahue Webinar Moderator
Binghamton University
Matthew Silverman Manager
Learning Space Design
George Mason University
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Come join us at the 2012 Conference
October 3 - 7
Tropicana Las Vegas
Hosted by University of Nevada Las Vegas
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We hope that you enjoyed the webinar.
Please take a few minutes and let us know
how we did by taking the brief survey
below.
http://www.surveymonkey.com/s/ClassroomDigitalConversion
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Thank you!!
For more information about CCUMC,
visit our website:
www.ccumc.org