A ccd having improved flushing by reducing power consumption and creating a uniform dark field while maintaining low dark current

摘要

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.