Common interface controller and method of descrambling transport stream channels
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United States of America Patent
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Jul 1, 2008
Grant Date -
Dec 16, 2004
app pub date -
Mar 24, 2004
filing date -
Mar 26, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A common interface controller and a method of descrambling channels of first and second transport streams using a conditional access module for descrambling channels of a transport stream as identified by respective PIDs wherein an intermediate data stream is provided by time multiplexing at least a part of the first transport stream with at least a part of the second transport stream, the part of the first transport stream including a first channel and the part of the second transport stream including a second channel, and wherein the original value of a PID identifying the second channel is changed to an intermediate value not used by any PID of any respective channel in said at least a part of the first transport stream such that the intermediate data stream forms an intermediate transport stream for processing by the conditional access module.
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