Television – Camera – system and detail – Combined image signal generator and general image signal...
Reexamination Certificate
2005-01-04
2005-01-04
Vu, Ngoc-Yen (Department: 2612)
Television
Camera, system and detail
Combined image signal generator and general image signal...
C348S312000
Reexamination Certificate
active
06839085
ABSTRACT:
An image apparatus has a light-receiving section and a light-blocking section. The light-receiving section receives light from an object to generate an analog video signal. The light-blocking section blocks the light to generate reference signals. The analog video signal is converted into a digital video signal. The reference signals are accumulated a predetermined number of times from a predetermined accumulation starting point on scanning lines forming an image of the object for a specific period. The accumulated signal is averaged to generate an average signal. A reference level of the digital video signal is adjusted based on the average signal so that the difference between the digital video signal and the average signal becomes zero. The number of times for accumulation is decided as 2nthat is smaller than a specific number “m”, of the scanning lines for forming the image of the object. The accumulation starting point is decided as (m−2n)/2, “n” and “m” being positive integers.
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Jacobson Holman
Victor Company of Japan Ltd.
Vu Ngoc-Yen
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