Method and apparatus for improving the picture quality in multi-

Details Method and apparatus for improving the picture quality in multi- Method and apparatus for improving the picture quality in multi-

1988-05-24

1989-06-27

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 13, 358141, H04N 713

Patent

active

048434671

ABSTRACT:
A method and apparatus for improving picture quality in multi-dimensional differential pulse code modulation coding wherein at the receiver at the end of an active picture line AZ reconstructed samples C.sub.r are expanded by utilizing auxiliary samples H.sub.c which are allocated to the blanking interval AL and the same auxiliary samples H.sub.c are utilized for encoding at the transmitter of the data. The method and apparatus substantially improves the picture quality by utilizing the techniques of the invention.

REFERENCES:
patent: 4665436 (1987-05-01), Osborne
Digital Television Bandwidth Reduction and Communications Aspects, by R. H. Stafford, published by John Wiley & Sons, 1980, pp. 30-58.
Techniques of DPCM Picture Coding for RPV TV, by R. Lippmann, ICC '79 Conference Record, vol. 3 of 4, Jun. 10-14, 1979, pp. 52.4.1 to 52.4.5.

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