Protocol and procedure for automated channel change in an MPEG-2

Details Protocol and procedure for automated channel change in an MPEG-2 Protocol and procedure for automated channel change in an MPEG-2

1997-09-26

2000-06-20

Nguyen, Chau

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

370522, 370468, 348 10, H04J 100, H04J 312, H04N 7173

Patent

active

060785942

ABSTRACT:
A method of changing the channels in a digital video and audio receiving system. The method includes receiving and decoding the encoded digital video and audio in a decoder, where the input is a multi-channel, time division multiplexed digital video and digital audio datastream. The datastream contains many Programs, each of the Programs includes a video packetized elementary stream, and an audio packetized elementary stream, each of which, in turn, contains a packet header, and packet data. The channel change method is a process of changing input channels from an old channel datastream to a new channel datastream with a minimum of latency. The method includes setting appropriate flags to request the channel change, acknowledging the requests, flushing buffers, muting audio output and/or freezing video output, and activating a data request line for new channel bitstream data.

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