Dual purpose HDTV/NTSC receiver

Details Dual purpose HDTV/NTSC receiver Dual purpose HDTV/NTSC receiver

1990-12-18

1992-12-22

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 11, 358141, 358 12, H04N 701

Patent

active

051737744

ABSTRACT:
A dual purpose receiver can receive and process either 525-line NTSC signals or 787.5-line HDTV signals without the use of costly interlace-to-progressive scan conversion circuitry. The 525-line signal can either be stored a line at a time and repeated twice to create a 1575-line format, or it can also interpolate values based on the two adjacent received lines to create a form of averaging in the 1575-line format. The invention is not restricted to use with NTSC/HDTV systems.

REFERENCES:
patent: 4414571 (1983-11-01), Kureha et al.
patent: 4670784 (1987-06-01), Goldberg
patent: 4800426 (1989-01-01), Glenn
patent: 4931855 (1990-06-01), Salvadorini
patent: 4984081 (1991-01-01), Miyoshi et al.

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