Digital broadcasting system using virtual channels
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 2, 2002
Issued Date -
N/A
app pub date -
Jun 23, 2000
filing date -
Oct 23, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A digital broadcasting system capable of causing any of physical channels selected by a broadcaster to be received as one of the channels available to users which is different from the physical channel selected by the broadcaster. For each of programs of each of the channels available to said users, a program information record comprising PSI (program specific information) is stored in a data base. The broadcaster is permitted to include, in the PSI, channel mapping information whose mapping destination is a channel (or a program) to be received instead of the channel for which said program information is intended. The program information records is inserted in broadcast transport streams on schedule and, if necessary, immediately after the broadcaster have included the channel mapping information in the PSI data.
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