Video signal processing apparatus

Details Video signal processing apparatus Video signal processing apparatus

1980-09-30

1982-08-17

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 4, 358 8, 360 38, H04N 9535

Patent

active

043452728

ABSTRACT:
In an apparatus for processing a color video signal including luminance and chrominance components and composed of successive frames each having a plurality of fields constituted by successive lines which are interlaced in a pictorial representation of a complete frame, a memory is provided to have the received video signal written therein at an address at which there was earlier written the video signal of a line of the next previous field which, in the pictorial representation of the complete frame, is positioned immediately adjacent the line of the video signal being received. An error in the received video signal is detected and, in response thereto, the writing of the error-containing video signal in the memory is inhibited and the error-free video signal previously written at the corresponding address is read out, with the chrominance component of the readout signal being phase inverted and added to the luminance component of the read-out signal so as to provide a color video signal which can replace and conceal the error-containing signal.

REFERENCES:
patent: 4122489 (1978-10-01), Bolger et al.
patent: 4250521 (1981-02-01), Wright
patent: 4272785 (1981-06-01), Fuhrer

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