Improved definition television set with external luminance and c

Details Improved definition television set with external luminance and c Improved definition television set with external luminance and c

1988-11-15

1989-11-21

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358137, H04N 332

Patent

active

048826251

ABSTRACT:
An improved definition television (IDTV) set including a motion sensing circuit for sensing motion of images and generating a motion sensing signal, a motion adaptive Y/C separating circuit separating a composite video signal into a luminance signal and a chrominance signal on the basis of the motion sensing signal, chroma demodulation and matrix circuit generating three primary color signals of red, green, and blue from separate luminance and chrominance signals separated at the Y/C separating circuit, and a motion adaptive scanning line converting circuit for converting a line scanning method of the three primary color signals to a progressive line scanning, while effecting a field or line interpolation operation to the three primary color signals. The television set is characterized by a first selector for alternatively supplying external luminance and chrominance signals supplied from the outside or the separate luminance and chrominance signals to the chroma demodulation and matrix circuit, and a second selector for alternatively supplying, the external luminance signal or a summing signal of said external luminance and chrominance signals, or the composite video signal to the motion sensing circuit.

REFERENCES:
patent: 3715483 (1973-02-01), Limb
patent: 4057835 (1977-11-01), Kinuhata
Improved Television System: NTSC and Beyond, by W. Schreiber, SMPTE Journal, Aug. 1987, pp. 734-744.

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