Television signal scan conversion system with reduced noise sens

Details Television signal scan conversion system with reduced noise sens Television signal scan conversion system with reduced noise sens

1992-03-26

1993-07-06

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358140, 358142, 358167, H04N 701

Patent

active

052259072

ABSTRACT:
A television signal receiver processes a television signal representing a letterbox image display format with a main image region, and a bar region containing auxiliary "helper" information to help convert from interlaced to progressive scanning. In the presence of image motion, a main image component and the helper component are combined and conveyed to a video processor. In the absence of motion, other image information, e.g., field repeated information, is conveyed to the video processor. The information conveyed to the video processor is determined by a switching network responsive to an control signal from a motion detector which senses low frequency luminance image information substantially exclusive of high frequency image information.

REFERENCES:
patent: 4598309 (1986-07-01), Casey
patent: 4931855 (1988-07-01), Salvadorini
patent: 4961112 (1990-10-01), Sugimori et al.
patent: 5031030 (1991-07-01), Hurst, Jr.
patent: 5068728 (1991-11-01), Macovski
"A Decoder for Letterbox Type Wide Aspect EDTV System", preprint of paper presented at 133rd SMPTE Technical Conf., by Ito et al., Oct. 26-29, 1991.

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