System for transmitting television picture information using an

Details System for transmitting television picture information using an System for transmitting television picture information using an

1982-12-20

1985-11-26

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

364725, 382 43, 371 37, 371 2, H04M 712

Patent

active

045557292

ABSTRACT:
An error protection code which acts on subpictures together constituting a television picture for the transmission of data for reconstructing the television picture at the receiving end. First each subpicture transformed by, 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. Moreover, a comparatively small number of coefficient bits within said number are protected against an additional bit error.

REFERENCES:
patent: 3971888 (1976-07-01), Chime 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), Meyer-Ebrecht et al.

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