Aperture correcting circuit

Details Aperture correcting circuit Aperture correcting circuit

1992-07-08

1994-03-01

Razavi, Michael T.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348690, 348625, H04N 5208

Patent

active

052912884

ABSTRACT:
A video camera is comprised of an aperture correcting signal generating circuit for generating an aperture correcting signal from a video signal of a picked-up image, and a nonlinear processing circuit for comparing the video signal with a reference voltage modulated by the aperture correcting signal and compressing the video signal at its high brightness portion higher than the reference voltage when the video signal is higher than the reference voltage.

REFERENCES:
patent: 3919470 (1975-11-01), Blom et al.
patent: 4680624 (1987-07-01), Murakami
patent: 4686562 (1987-08-01), Yamanaka
patent: 4855829 (1989-08-01), Kihara
Applicant's Submitted Prior Art (FIGS. 1-5).

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