1. videoconferencingppt-13348570716444-phpapp01-120419123834-phpapp01

8/13/2019 1. videoconferencingppt-13348570716444-phpapp01-120419123834-phpapp01

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WHAT IS VIDEO CONFERENCING???

Video conferencing

is simply a vehicle for interactivecommunication.

enables one set of people to see and hearpeople in a different location.

in its most basic form is the transmission ofimage (video) and speech (audio) back and

forth between two or more physicallyseparate locations.

Also known as Videoteleconference.


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BASIC FEATURES

Very straightforward approach.

Calls can be made locally, nationally or

across the world.


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VIDEO CONFERENCING COMPONENTS

Camera

Microphone

Speakers

TV or Monitor


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CAMERA

To capture & send video during video

conferencing.

MICROPHONE

To capture & send audio during video

conferencing.


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SPEAKERS

To play the audio received during video

conferencing.

MONITOR

To display the video received during video

conferencing.


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ADDITIONAL REQUIREMENT

CODEC

Codec - COder-DECoder( COmpressor-

DECompressor )- makes the audio/videodata "small enough" to be practical forsending over expensive networkconnections.

A codec takes analog signals, compressesand digitizes them, and transmits the signalsover digital phone lines.


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VIDEOCONFERENCING SYSTEMS

Dedicated systemshave all required components packaged into

a single piece of equipment.

usually a consolewith a high quality remotecontrolled video camera.

Desktop systems

are add-onsto normal PCs, transforming

them into videoconferencing devices.


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Dedicated systems

Large group videoconferencing:non-portable, large, more expensive devices usedfor large rooms and auditoriums.

Small group videoconferencing: non-portable or portable, smaller, less expensivedevices used for small meeting rooms.

Individual videoconferencing: usuallyportable devices, meant for single users, havefixed cameras, microphones and loudspeakersintegrated into the console.


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VIDEOCONFERENCING TYPES

Point-to-point

A videoconference that connects two locations.

Each site sees and hears the other sites at all times


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VIDEOCONFERENCING TYPES

Multi-point

A videoconference that connects to more thantwo sites through the use of a multi-point

control unit( MCU ) or video hub.

Participants at all sites can hear one another atall times and see the site that is currentlyspeaking.( Voice activated switching)

This is a bridge that interconnects calls fromseveral sources.


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USES

Business

E-Meetings


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USES Chatting with friend


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USES Family talk


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USES Telemedicine

Transmission of medical images Diagnosing & consulting


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USES

Videoconferencing in my hand


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ADVANTAGES

Student learning is impacted in several ways:

Enhances student motivation.

Is exciting or different, catches the students

attention.

Connects with the real world.

Promotes student retention and learning.

Accesses information from primary

sources.

Accommodates many learning styles.


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ADVANTAGES

Students have the opportunity to interact with

the experts in a particular field of study.

Videoconferencing accommodates a variety ofdifferent learning styles through severalmodalities.

Videos

Animations

Audio

Graphics

Collaboration


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ADVANTAGES

Videoconferencing affords students the

opportunity to develop and improve various

communication skills.

Presentation and speaking skills. Communication and management skills.

Questioning and interviewing skills.


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ADVANTAGES

Use of sign language communications for deaf,

hard-of-hearing and mute Can improve work quality

Reduce costs

Improves communication

Groups can meet more frequently

Critical meetings can be conducted in less time

More faculty and staff can be involved


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LIMITATIONS Initial cost of the equipment is high.

Ghost/Blurredimages seen when rapid movement

occurs :

Audio echoeffect seen when system is not properlyinstalled :

Switch OFF microphone when not in use.


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1. videoconferencingppt-13348570716444-phpapp01-120419123834-phpapp01

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