Method and system for supporting constant bit rate encoded MPEG-

Details Method and system for supporting constant bit rate encoded MPEG- Method and system for supporting constant bit rate encoded MPEG-

1996-02-26

1998-04-21

Ton, Dang

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370476, H04L 1256

Patent

active

057425990

ABSTRACT:
A system and method for supporting constant bit rate encoded MPEG-2 transport over local Asynchronous Transfer Mode (ATM) networks. The present invention encapsulates constant bit rate encoded MPEG-2 transport packets, which are 188 bytes is size, in an ATM AAL-5 Protocol Data Unit (PDU), which is 65,535 bytes in size. The method and system includes inserting a plurality of MPEG-2 transport packets into a single AAL-5 PDU, inserting a segment trailer into the ATM packet after every two MPEG packets, and then inserting an ATM trailer at the end of the ATM packet. In a preferred embodiment, 10 or 12 MPEG-2 transport packets are packed into one AAL-5 PDU to yield a throughput 70.36 and 78.98 Mbits/sec, respectively, thereby supporting fast forward and backward playing of MPEG-2 movies via ATM networks.

REFERENCES:
patent: 5544161 (1996-08-01), Bishan et al.
patent: 5583864 (1996-12-01), Lightfoot et al.

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