Method and apparatus for controlling electronic shutter

Details Method and apparatus for controlling electronic shutter Method and apparatus for controlling electronic shutter

1990-11-28

1991-12-24

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821313, H04N 530, H04N 314, H04N 5335

Patent

active

050757750

ABSTRACT:
An electronic shutter controlling method is provided for an electronic still video camera having a solid state imaging device, wherein a first field shift pulse is generated for discharging unnecessary charges from the solid state imaging device and for starting signal charge storage in accordance wth a determined exposure time, but is latched at intervals of the horizontal synchronizing signal, and the discharge of the unnecessary charges is started when the first shift pulse is latched. The timing of the start of the signal charge storage is therefore displaced by a half of the horizontal synchronizing signal period in the even field relative to the odd field, thereby making the charge storage time always N times as long as a horizontal synchronizing signal period.

REFERENCES:
patent: 4556912 (1985-12-01), Yamanaka et al.
patent: 4574309 (1986-03-01), Arisawa et al.
patent: 4603355 (1986-07-01), Yamada et al.
patent: 4800435 (1989-01-01), Ikeda et al.
patent: 4963980 (1990-10-01), Suga et al.
patent: 5003398 (1991-03-01), Suzuki

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