System for transmitting and receiving television picture...

Details System for transmitting and receiving television picture... System for transmitting and receiving television picture...

H - Electricity

04

N

350/48

H04N 7/30 (2006.01) H04N 11/04 (2006.01) H04N 5/217 (2006.01)

Patent

CA 1214543

ABSTRACT: "System for transmitting television picture information using an error protection code which acts on subpictures, a picture converting device comprising a device for generating such a subpicture-wise error protection code, and apparatus for the decoding and display of the tele- vision picture." An error protection code which acts on sub- pictures for the transmission of television picture in- formation. 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.

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