Signal processing for off-air video recorder

Details Signal processing for off-air video recorder Signal processing for off-air video recorder

1975-08-15

1977-10-25

Griffin, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 4, H04N 576

Patent

active

040558487

ABSTRACT:
An off-the-air color video recorder employs frequency interleaved chroma and luminance signal information for purposes of bandwidth compression. During playback, a shooting gallery picture defect characterized by motion along horizontal scene edges was noted. Analysis indicated the problem source to be the bleeding of chroma into the playback luminance channel. To avoid this problem, the chroma signal information, prior to recording, has its vertical resolution reduced, e.g., by line-by-line averaging of chroma.

REFERENCES:
patent: 3729579 (1973-04-01), deBoer
patent: 3764739 (1973-10-01), Faroudja
patent: 3775554 (1973-11-01), Hjortzberg
patent: 3812523 (1974-05-01), Narahara
patent: 3872498 (1975-03-01), Pritchard

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