System and method for allocating packet identifiers in a...

Details System and method for allocating packet identifiers in a... System and method for allocating packet identifiers in a...

2001-06-04

2009-02-24

Backer, Firmin (Department: 2416)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S486000

Reexamination Certificate

active

07496092

ABSTRACT:
An apparatus in a digital network includes the logic for allocating and assigning packet identifiers (PIDs) to digital packets, such as MPEG packets. The logic can reside in a device that transmits a transport stream or a device that controls a transport stream transmitter. In the preferred embodiment, a session number is associated a program and with an output port of a transport stream transmitter; and the session number is unique for that output port. The logic associates a PID from a set of allocated PIDs with the session number. The set of allocated PID values are PMT_PIDs, which are used for identifying the PMT packets, and the set of PMT_PIDs is scalable. In the preferred embodiment, the logic also associates the PMT_PID to the session number using a predetermined scheme. The apparatus also includes logic for assigning a set of PID values to the elementary streams of a program. In the preferred embodiment, number of PIDs assigned to the elementary streams of a program is no more than the number of elementary streams of the program.

REFERENCES:
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patent: 6570926 (2003-05-01), Agrawal et al.
patent: 6775257 (2004-08-01), Watanabe
patent: 6912573 (2005-06-01), Ohkado et al.

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