Digital entertainment terminal providing multiple digital pictures
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United States of America Patent
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-
Dec 8, 1998
Grant Date -
N/A
app pub date -
Aug 14, 1996
filing date -
Aug 14, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Two MPEG-encoded digital data streams are simultaneously decoded in a digital entertainment terminal to provide Picture-in-Picture (PIP) and Picture-on-Picture (POP) capabilities for a conventional television. A primary MPEG-encoded data stream is decoded using a digital video processor optimized for MPEG2 decoding or a dedicated MPEG2 decoder system. A secondary MPEG-encoded data stream is partially processed by filtering the B frames of the secondary MPEG-encoded data stream and using the corresponding I and P frames in a partial decoding arrangement to obtain decompressed video data providing a limited-resolution representation of a second program. Partial decoding may also be performed using only I frames. The partial decoding may be implemented through execution of software by a general-purpose microprocessor. Alternatively, the media processor may perform the partial decoding during the idle intervals of the dedicated media processor.
First Claim
Family
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Cited Art Landscape
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