Electronic still camera

Details Electronic still camera Electronic still camera

1989-09-15

1992-07-07

Groody, James J.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821318, 358909, H04N 314, H04N 5335

Patent

active

051287676

ABSTRACT:
In an electronic still camera having a solid-state image pickup device and a mechanical shutter, the interval from the start of charge accumulation to the start of charge readout for odd and even fields may be different, resulting in flicker or line crawl effects. To overcome this problem, the intervals are made the same by detecting the level of a reference signal synchronized with the operation of the shutter, determining whether the levels are the same when the shutter is opened and when the shutter is closed, and, if they are not the same, preventing the application of transfer gate signals to the image pickup device for a predetermined period.

REFERENCES:
patent: 4298264 (1981-11-01), Ishil
patent: 4754333 (1988-06-01), Nara
patent: 4760452 (1988-07-01), Kaneko et al.
patent: 4912558 (1990-03-01), Easterly et al.
patent: 4914518 (1990-04-01), Suga
patent: 4972267 (1990-11-01), Kameko et al.

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