Television receiver including shading correction without deterio

Details Television receiver including shading correction without deterio Television receiver including shading correction without deterio

1996-05-22

1999-03-23

Chin, Tommy P.

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

348673, 348686, H04N 521

Patent

active

058867503

ABSTRACT:
In a television receiver, shading correction is carried out without deteriorating the S/N ratio. In a television receiver including a CRT, and a shading corrector for supplying an image signal to a cathode of the CRT (cathode-ray tube) and for correcting brightness inequalities of an image formed on a fluorescent screen by way of electron beams which are increased/decreased in response to a change in the potentials applied to a first grid of the CRT, the shading corrector supplies a shading correction signal to the first grid.

REFERENCES:
patent: 4549117 (1985-10-01), Takahashi et al.
patent: 4549216 (1985-10-01), Yuki
patent: 4855864 (1989-08-01), Griffey
patent: 5196937 (1993-03-01), Kageyama
patent: 5563652 (1996-10-01), Toba et al.
patent: 5596374 (1997-01-01), Sumiyoshi et al.
patent: 5656895 (1997-08-01), Tateishi
patent: 5671023 (1997-09-01), Nishiwaki et al.

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