System for decoding and displaying encoded television pictures

Details System for decoding and displaying encoded television pictures System for decoding and displaying encoded television pictures

1985-06-27

1986-01-28

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

364725, 371 2, 371 37, 382 43, H04N 712

Patent

active

045675180

ABSTRACT:
An error protection code which acts on subpictures for the transmission of television picture information. First the picture is subpicture-wise transformed (124) by means of transformation functions, for example, Hadamard functions. Of the coefficients thus formed, a number of most significant coefficient bits which are associated with low frequency transformation functions are protected against a bit error (126). Moreover, a comparatively small number of coefficient bits within said number are protected against an additional bit error.

REFERENCES:
patent: 3971888 (1976-07-01), Chimg et al.
patent: 4179709 (1979-12-01), Workman
patent: 4189748 (1980-02-01), Reis
patent: 4375650 (1983-03-01), Tiemann
patent: 4398217 (1983-08-01), Peters
patent: 4405936 (1983-09-01), Peters
patent: 4447886 (1984-05-01), Meeker
patent: 4463377 (1984-07-01), Myer-Ebrecht et al.

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