Apparatus and method for encoding and decoding broadcast...

Details Apparatus and method for encoding and decoding broadcast... Apparatus and method for encoding and decoding broadcast...

2006-03-27

2009-08-18

Miller, John W (Department: 2421)

Interactive video distribution systems

Video distribution system with local interaction

Receiver

C725S138000, C725S146000, C725S151000, C348S731000

Reexamination Certificate

active

07577982

ABSTRACT:
An apparatus and method for changing a channel in a digital broadcasting system are provided. The apparatus includes: a digital broadcast server for transmitting a multiplexed stream obtained by multiplexing at least one down broadcast data, and transmitting up broadcast data and at least one difference broadcast data; and a set-top box for accessing a channel over which the multiplexed stream is transmitted to perceive a down broadcasting PID (program identification) set for transmitting at least one down broadcast data contained in the multiplexed stream, upsizing and outputting down broadcast data having a down broadcasting PID corresponding to selected channel information from the multiplexed stream when a user selects a certain channel, summing difference broadcast data corresponding to a difference broadcasting PID and broadcast data obtained by upsizing the down broadcast data corresponding to the channel information, and outputting the result. As a result, a channel change delay which occurs when changing a channel is reduced.

REFERENCES:
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patent: 2006/0075428 (2006-04-01), Farmer et al.
patent: 2006/0140276 (2006-06-01), Boyce et al.
patent: 2006/0242240 (2006-10-01), Parker et al.
patent: 2007/0107024 (2007-05-01), Versteeg et al.
patent: WO 2004114668 (2004-12-01), None

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