Device for filtering out null packet for MPEG-2 transmission

Details Device for filtering out null packet for MPEG-2 transmission Device for filtering out null packet for MPEG-2 transmission

2004-02-04

2008-09-23

Patel, Ajit (Department: 2616)

Multiplex communications

Data flow congestion prevention or control

C370S477000

Reexamination Certificate

active

07428215

ABSTRACT:
Disclosed is a device for filtering out a null packet in a data stream for example an MPEG-2 TS (Transport Stream) to avoid bandwidth waste when it is transmitted to a backbone network. The device includes a plurality of receiving interfaces, a filter unit, and a controller. The receiving interfaces receive parallel data, such as DVB-ASI (Digital Video Broadcasting-Asynchronous Serial Interface) inputs as channel-by-channel MPEG-2 data. The filter unit counts the respective numbers of data packets and non-data packets of the data input from the receiving interfaces and filters a null packet in the data. A network transmission unit transmits the filtered data to a backbone network. The controller calculates a bit rate based on both of the count numbers received from the filter unit.

REFERENCES:
patent: 2003/0133446 (2003-07-01), Schoenblum
patent: 2003/0196078 (2003-10-01), Wise et al.
patent: 2007/0091917 (2007-04-01), Schoenblum
patent: 2007/0113141 (2007-05-01), Choi et al.

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