Sensitivity compensating method for solid-state image pickup ele

Details Sensitivity compensating method for solid-state image pickup ele Sensitivity compensating method for solid-state image pickup ele

1987-10-16

1989-04-25

Ng, Jin F.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821319, H04N 5235

Patent

active

048252930

ABSTRACT:
A method for compensating changes which would otherwise be produced in a video output signal when the shutter speed exceeds a certain value, even though the same light level of the received image is maintained on the image pickup. In one embodiment, the shutter speed and/or aperture setting are adjusted to compensate. The amplification factor of the output video signal can also be adjusted. In other embodiments, gamma correction is effected separately for each primary color signal to compensate for the changes which affect the color signals in different amounts as the shutter speed is increased.

REFERENCES:
patent: 4695891 (1987-09-01), Peterson
patent: 4739409 (1988-04-01), Baumeister

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