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US 5,477,265 AGranted
Device for controlling imaging device
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorNobuhiro Tani
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AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorNobuhiro Tani
Estimating the term…
A control device includes a control mechanism for eliminating a dark current effect generated in a CCD. The control mechanism carries out a charge pumping operation in the CCD during a time after an object is photographed up until the time when an aperture is closed. The control mechanism obtains a dark current component generated when the aperture is closed after a photographing operation, based on a dark current component outputted by the CCD during a predetermined period, and then subtracts the dark current component from data outputted by the CCD in accordance with an image signal corresponding to the subject.
A device for controlling an imaging device which outputs an image signal corresponding to an object, comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Circuitry for compensating brightness variation in the scene: by influencing optical camera components
For the control of blooming: by controlling anti-blooming drains
Noise processing, e.g. detecting, correcting, reducing or removing noise: applied to dark current
SSIS architectures; Circuits associated therewith: charge-coupled device [CCD] sensors; Charge-transfer registers specially adapted for CCD sensors
Term ended 19 Dec 2012 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
The present invention relates to a control device for controlling an imaging device, the control device providing a required effect when applied to an electronic still video camera.
2. Description of the Related Art
The present invention will be better understood from the description of the preferred embodiments of the invention set forth below, together with the accompanying drawings, in which:
FIG. 1 is a block diagram showing a construction of a first embodiment of a control device for an imaging device according to the present invention;
FIG. 2 is a block diagram showing a construction of a CCD;
The present invention will now be described with reference to embodiments shown in the drawings.
FIG. 1 is a block diagram showing a construction of a first embodiment of a control device for an imaging device according to the present invention.
Light reflected by an object (or subject to be photographed; not shown) enters a CCD (Charge Coupled Device) 11 or an imaging device through a taking lens 12 and an aperture 13. The CCD 11 outputs an image signal, corresponding to an object image, to an image signal processing circuit 14. The image signal is processed and frequency-modulated by the image signal processing circuit 14, and then inputted to a magnetic disk drive device 15, to thereby be recorded onto a video floppy disk (not shown).