Báo cáo thảo luận Môn: Truyền thông đa phương tiện

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CONTENT
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Media Types
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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
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Images
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Audio
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Video
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MEDIA TYPES


Text: unformatted text, formatted text
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MEDIA TYPES
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Images: computer-generated, pictures
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MEDIA TYPES
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Audio: speech, music, general audio
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MEDIA TYPES
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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):

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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THE COMMUNICATION MODE

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THE COMMUNICATION MODE

Half Duplex: A half duplex system can transmit data
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

Full Duplex: A full duplex system can transmit data
simultaneously in both directions on transmission
path. Full-duplex method is used to transmit the data
over a serial communication link.
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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
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Unicast
A
B
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THE COMMUNICATION MODE
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Broadcast
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THE COMMUNICATION MODE
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Multicast
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The end!!!