Telecommunications – Interference signal transmission
Patent
1998-10-26
2000-04-18
Grant, Chris
Telecommunications
Interference signal transmission
455 62, 348 12, 348 10, 348384, H04N 7173
Patent
active
06052555&
ABSTRACT:
MPEG compression for video/audio data is completed in real- or better than real-time by using computer processors in thousands of television receiver set-top boxes interconnected to a cable television network. The set-top boxes form a massively parallel, distributed computer network. MPEG compression for video/audio services is completed by partitioning the processing of video/audio frames into subtasks, and distributing these subtasks to set-top boxes that are not being used for subscriber services. After MPEG processing, the compressed video/audio frames are collected from the set-top boxes and are reconstructed into a compressed video/audio stream in the proper temporal order. If desired, the original video data can be JPEG-encoded prior to distribution to the individual set-top boxes, and then JPEG-decoded at the boxes. So doing reduces bandwidth constraints on the distribution network. Moreover, the lossy JPEG encoding/decoding process removes high frequency components from the original video data, facilitating and speeding the MPEG compression.
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Grant Chris
Microsoft Corporation
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