Accession Number : ADD000940

Title :   Ordered Dither System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Lippel,Bernard

Report Date : 12 Jun 1973

Pagination or Media Count : 10

Abstract : The patent describes an improved system for transmission of either still or moving pictures, with or without scan interlace, and using only coarse quantization of the picture luminance, for conserving transmission channel capacity. This improvement is accomplished by combining the picture with a novel, two-dimensional ordered dither pattern. This pattern is arranged so that, without requiring expensive and complex synchronous subtraction of the dither signal at the receiver, and while operating with coarse quantization, a picture having relatively few disturbing noise structures, and of generally better quality, can be obtained than has been possible with dither systems heretofore.

Descriptors :   *Pulse communications, *Patents, Digital systems, Television systems, Pictures, Coding, Quantization, Patterns

Subject Categories : Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE