Color image sensing device

Patent

Color image sensing device

- 02 Nov 1983

25

TL;DR: In this article, an iris control for adjusting the iris such that the output of the image sensing arrangement becomes lower when the gain control circuits are under the control of the balance control than when they were under a normal photographic condition was presented.

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Citations

Patent

Image sensing method and apparatus

Masao Suzuki

- 29 Oct 1997

TL;DR: In this paper, a selecting unit selects a second mode for sensing a document or the like, image signals obtained by exposing an exposing unit into the second mode unit through a clamping unit and the selecting unit.

...read moreread less

30

Patent

Optical image to video transfer system having enhanced resolution and contrast for dark areas of the image

Robert William Easterly, +3 more

- 21 Dec 1989

TL;DR: In this paper, the translation of an optical image into video signals by a video sensor illuminated by the optical image is adjusted by illuminating the sensor at a first level of light intensity sufficient to provide the video signals at maximum amplitude while adjusting the amplitude of the video signal to the first level.

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25

Patent

Still video camera with common circuit for color balance and exposure control.

Richard A. Shroyer, +1 more

- 19 May 1988

TL;DR: In this article, a video still camera includes a common integrating circuit for measuring light level in relation to both color balance and exposure control, and the photodiodes are selectively multiplexed into the input of the integrated circuit for the measurements.

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24

Patent

System for controlling the amount of light reaching an image pick-up apparatus based on a brightness/darkness ratio weighing

Atsushi Fujioka, +3 more

- 20 Nov 1987

TL;DR: In this paper, a light signal control circuit for an image pick-up apparatus detects a substantially peak value of image pickup signals by a first level detection circuit, detects an average value of the image pick up signals by second level detection circuits, determines a brightness condition of an object by a decision circuit, weights the outputs of the first level detector and the second level detector by a weighting circuit, and controls the amount of light reaching an image picking up apparatus in accordance with an output of the weighting circuits.

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22

Patent

Electronic still video camera wherein a pre-exposure period is utilized to generate control signals of integrated values of the photoelectrically converted image signal to control both exposure and color balance

Tsutomu Takayama, +2 more

- 03 Oct 1994

TL;DR: In this article, a photoelectric converter is used to produce an electrical signal corresponding to a received image, which can then be used to adjust the exposure and color balance in a subsequent picture taking second exposure.

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18

References

Patent

Automatic light control system

Paul R. Prince, +2 more

- 04 Jun 1969

TL;DR: In this paper, a system to automatically regulate input light and television camera tube gain to maximize scene viewing continuity while protecting against overloads is presented, where a common path comprising a keyed clamp and field gating circuit, parallelly connected peak and average detectors, detector output weighting, amplifying and attenuator circuits.

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35

Patent

Automatic white adjusting circuit for a television camera

Toyotaka Machida, +2 more

- 02 Sep 1980

TL;DR: In this paper, an automatic white adjusting circuit for a television camera is presented, in which a rough adjustment is first performed with an adjustment quantity of large steps, and a fine adjustment is then performed with a small adjustment, upon automatic adjustment of the white by directing the television camera towards a white surface.

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31

Patent

Solid state television camera with iris control

Katsuro Miyata, +2 more

- 05 Aug 1982

TL;DR: In this paper, the iris is controlled by the peak level of a smear signal of a horizontal scanning line during a vertical blanking interval so that the smear signal contained in a video signal from the image sensing device is reduced.

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26

Patent

White balance control circuit

Nishimura Toshiji, +2 more

- 05 Mar 1979

TL;DR: In this paper, a white balance control circuit for an encoded composite color television signal is disclosed in which three primary color signals of green (G), blue (B) and red (R) are matrixed to be mixed color signal components.

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20

Patent

Color image pickup device

Kazushige Ooi, +3 more

- 18 Feb 1983

TL;DR: In this article, a color image pickup device was proposed, in which image light from a white object to be photographed or image light integrated by a diffusion plate or the like is incident on a pickup tube through an electrochromic element.

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