Television – Camera – system and detail – Optics
Patent
1994-11-28
1996-06-11
Razavi, Michael T.
Television
Camera, system and detail
Optics
348355, H04N 5232
Patent
active
055260497
ABSTRACT:
An automatic focus circuit for use with a video camera comprises an analog to digital converter which converts an analog luminance signal provided from an image signal processing circuit into a digital luminance signal, a microcomputer for controlling the automatic focus unit using an integrated luminance value which is integrated in an integrating circuit, and an area dividing circuit for horizontally and vertically dividing a screen of a video camera monitor. The automatic focus operation is easily performed by using the integrated digital luminance value as stored in a memory circuit. Accordingly, the automatic focus circuit simplifies the constitution and accuracy of the automatic focus.
REFERENCES:
patent: 4544953 (1985-10-01), Goldman
patent: 4614975 (1986-09-01), Kaito
patent: 4922346 (1990-05-01), Hidaka et al.
patent: 4967280 (1990-10-01), Takuma et al.
patent: 4980773 (1990-12-01), Suda et al.
patent: 5005086 (1991-04-01), Iwamoto et al.
patent: 5115262 (1992-05-01), Komiya
patent: 5150217 (1992-09-01), Senuma et al.
patent: 5187585 (1993-02-01), Kaneda et al.
patent: 5212516 (1993-05-01), Yamada et al.
Ho Tuan Y.
Razavi Michael T.
Samsung Electronics Co,. Ltd.
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