CCD having improved flushing by reducing power consumption...

Details CCD having improved flushing by reducing power consumption... CCD having improved flushing by reducing power consumption...

2007-09-25

2007-09-25

Srivastava, Vivek (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S312000

Reexamination Certificate

active

10268362

ABSTRACT:
A digital camera includes a CCD operating with accumulation mode clocking for capturing an electronic representation of an image; and two or more clocks operatively and respectively connected to each phase of the two or more phases for initiating flushing of excess current, wherein, to initiate flushing, a time the clocks are at a high level are substantially the same, and a time the clocks are at a low level can be selected at any duration between a minimum width at which dark current starts to substantially increase and twice its normal operating duration during image readout and for reducing power consumption while retaining minimum dark current and for having a substantially uniform dark field.

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Richard D. Nelson, Accumulation-mode Charge-coupled Device, Nov. 15, 1974, American Institute of Physics, Applied Physics Letters, vol. 25, No. 10, pp. 568-570.
Albert J. P. Theuwissen,Solid-State Imaging with Charge-Coupled Devices, “1.1.1 MOS Capacitance In Accumulation,”Chapter 1, pp. 8-10.

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