Method of driving solid-state image pickup device

Details Method of driving solid-state image pickup device Method of driving solid-state image pickup device

2008-05-20

2008-05-20

Chow, Dennis (Department: 4126)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S240990, C348S345000, C348S230100, C348S294000, C348S311000, C348S312000

Reexamination Certificate

active

07375747

ABSTRACT:
In an CCD image sensor, when an image of a partial area is used, a frame rate is enhanced. Horizontal transfer of signal charges of an i-th line read out to a horizontal transfer portion is stopped at the time point when all or a part of a tail portion74subsequent to an extraction target portion72. Under this state, the signal charges of an (i+1)-th line are transferred to the horizontal transfer portion. Thereafter, the horizontal transfer is started. Through this operation, unnecessary signal charges of the tail portion74of the i-th line and unnecessary signal charges of a head portion82of an (i+1)-th line are combined. By partially overlapping adjacent lines with each other, the cycle number of horizontal transfer clocks required for the horizontal transfer per line can be reduced as compared with a normal operation, thereby enhancing a frame rate.

REFERENCES:
patent: 6400404 (2002-06-01), Hirota et al.
patent: 6744466 (2004-06-01), Furumiya
patent: 7245323 (2007-07-01), Miyahara
patent: 2003/0063207 (2003-04-01), Noguchi et al.
patent: 2003-0028715 (2003-04-01), None

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