Video signal encoding apparatus

Details Video signal encoding apparatus Video signal encoding apparatus

1991-06-13

1993-03-30

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358133, H04N 7133

Patent

active

051989000

ABSTRACT:
A video signal encoding system is arranged in such a manner that an input video signal is subjected to a high efficiency encoding process so as to be a difference signal before it is transformed in a discrete cosine transformation. The discrete cosine transformation coefficient data thus obtained is encoded to digital data signals which are allocated to a plurality of time slots. Among a plurality of the time slots is inserted an additional data time slot to which an additional data denoting the method of the high efficiency encoding so as to be capable of overcoming a problem of the presence of a limitation in the length of the variable length encoding word of the discrete cosine transformation coefficient data, and another problem in terms of the necessity of enlarging the size of the signal processing circuits for transmitting the discrete cosine transformation coefficient data.

REFERENCES:
patent: 3761613 (1973-09-01), Limb
patent: 4144543 (1979-03-01), Koga
patent: 4821119 (1989-04-01), Gharavi
Matsumoto et al., "Coding Performance of Motion-Compensated Interframe, Interfied, and Intrafied Adaptive Prediction Coding for Composite and Component TV Signals", SMPTE Journal, May 1986, pp. 542-549.

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