Video coder/decoder which separately processes high and low freq

Television – Bandwidth reduction system – Data rate reduction

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348415, 348424, H04N 746

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active

058383760

ABSTRACT:
In a predictive coding apparatus, an interframe/interfield predictive signal is generated in which low frequency components are depressed. A predictive error signal is generated on the basis of an input video signal and the interframe/interfield predictive signal. The predictive error signal is then interframe/interfield-coded. In a predictive decoding apparatus, a code transmitted from the coding apparatus is interframe/interfield-decoded to obtain a decoded signal. An interframe/interfield predictive signal is generated in which low frequency components are depressed. The video signal is then reproduced by adding the decoded signal and the predictive signal.

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