Picture quality improving apparatus capable of reducing deterior

Details Picture quality improving apparatus capable of reducing deterior Picture quality improving apparatus capable of reducing deterior

1989-10-12

1991-01-08

Peng, John K.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358167, 358105, H04N 964, H04N 5213, H04N 718

Patent

active

049840703

ABSTRACT:
A picture quality improving apparatus includes a multiplexer for multiplexing a digital luminance signal and a digital color difference signal upon reception thereof and outputting a first multiplex signal. A noise reduction circuit reduces a noise component from the first multiplex signal and outputs a second multiplex signal. A motion detector receives the first multiplex signal and detects a picture movement signal included in the first multiplex signal. An interpolation signal generator generates a first interpolation signal based on the digital luminance signal and generates a second interpolation signal based on the second multiplex signal. A signal selector selects one of the first and second interpolation signals from the interpolation signal generator in accordance with the picture movement signal detected by the motion detector.

REFERENCES:
patent: 4240106 (1980-12-01), Micheal et al.
patent: 4242704 (1980-12-01), Ito et al.
patent: 4388729 (1983-05-01), Spencer et al.
patent: 4658285 (1987-04-01), Lewis, Jr.
patent: 4862267 (1989-08-01), Gillard et al.
Takehiro Okuyama et al.; "VHS Format Digital HI-FI VCR VC-D900HF"; NEC Technical Journal; vol. 40; No. 8; p. 37; Sep. 22, 1987.

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