Digital entertainment terminal providing multiple digital pictur

Details Digital entertainment terminal providing multiple digital pictur Digital entertainment terminal providing multiple digital pictur

1996-08-14

1998-12-08

Hsia, Sherrie

Television

Basic receiver with additional function

For display of additional information

348565, 348567, 348568, 348588, H04N 5445, H04N 545

Patent

active

058477713

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.

REFERENCES:
patent: 5481315 (1996-01-01), Matsunaga

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