“Multimedia” indicate that the informationdata being transferred over the network may be composed of one or more of the following media types: Text Images Audio Video The are three ways or media of data communication: Simplex, Half duplex (HDX), Full duplex (FDX): Simplex: In Communication Networks, Communication can take in one connected to such a circuit. The is no mechanism for information to be transmitted back to the sender. Communication is unidirection
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CONTENT
• Media Types
• The Communication Mode
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MEDIA TYPES
“Multimedia” indicate that the information/data being
transferred over the network may be composed of one
or more of the following media types:
Text
Images
Audio
Video
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MEDIA TYPES
Text: unformatted text, formatted text
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MEDIA TYPES
Images: computer-generated, pictures
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MEDIA TYPES
Audio: speech, music, general audio
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MEDIA TYPES
Video: video clips, movies, films
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THE COMMUNICATION MODE
The are three ways or media of data communication: Simplex, Half duplex (HDX), Full duplex (FDX):
Communication can take in one connected to such a circuit The is no mechanism for information to be transmitted back to the sender Communication is unidirection
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THE COMMUNICATION MODE
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THE COMMUNICATION MODE
in both directions, but only in one direction at a time
that mean half duplex modes support two-way traffic
but in only one direction at a time
Example of half duplex mode:
1, A walkie-talkie operates
in half duplex mode
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THE COMMUNICATION MODE
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THE COMMUNICATION MODE
simultaneously in both directions on transmission path Full-duplex method is used to transmit the data over a serial communication link
• Both the connected devices can transmit and receive
at the same time Therefore it represents truly
bi-directional system The link may contain two separate transmission paths one for sending and another for receiving
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THE COMMUNICATION MODE
Example of Full duplex mode:
Telephone networks operate in full duplex mode when two persons talk on telephone line, both can listen and speak simultaneously
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THE COMMUNICATION MODE
• Unicast
A
B
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THE COMMUNICATION MODE
•Broadcast
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THE COMMUNICATION MODE
•Multicast
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The end!!!