Temporally-pipelined predictive encoder/decoder circuit and meth

Details Temporally-pipelined predictive encoder/decoder circuit and meth Temporally-pipelined predictive encoder/decoder circuit and meth

1994-12-29

1997-07-08

Au, Amelia

Television

Bandwidth reduction system

Data rate reduction

348416, 348415, 348411, 348721, 348716, H04N 718

Patent

active

056466870

ABSTRACT:
A temporally-pipelined predictive encoder/decoder circuit for encoding or decoding an input signal containing a sequence of data frames received at a particular frame rate and frame data rate into an output signal having an equal frame rate employs a plurality of N predictive encoders/decoders. An input buffer may be used to extract the information for each data frame in the input signal and supply such information to a corresponding one of the encoders/decoders at rate of 1/N of the particular frame data rate. Each encoder/decoder generates corresponding encoded/decoded information as it is received as well as provides digitized frame information to the encoder/decoder processing the next received image frame. The encoded/decoded information is provided to corresponding frame buffers which temporarily store such information. Each one of the frame buffers is connected to respective inputs of a multiplexer, wherein the encoded/decoded information is provided to a multiplexer output to form the encoded/decoded output signal. When information for the entire frame has been stored by a frame buffer, the stored data information is provided to the multiplexer output to provide the portion of the output signal corresponding to that frame.

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