Clock control circuit with independent timing adjustments for im

Details Clock control circuit with independent timing adjustments for im Clock control circuit with independent timing adjustments for im

1994-10-28

1996-09-24

Metjahic, Safet

Television

Camera, system and detail

Solid-state image sensor

348319, 348321, 348272, H04N 314

Patent

active

055595537

ABSTRACT:
An image sensor used to implement a system to prevent aliasing problems typically encountered in charge coupled devices where a single charge coupled device is used to sense multiple colors. The image sensor has an imaging region having a substrate of semiconductor material including that which provides for accumulation of charge. The transfer of charge carriers contained within said imaging region is performed to two horizontal shift registers located adjacent to the sensing region. The horizontal shift registers having a series of storage regions for receiving charge carriers from the sensing region. Control is provided for implementing transfer of charge carriers out of the image sensing region and into the horizontal registers. The controlled transfer of charge carriers employs multiple clocking techniques to transfer charge carriers between and out of the horizontal registers. The multiple clocking techniques employ independent timing adjustments for register loading periods and an independent timing adjustment for register readout periods. The adjustments provide for control of rise and fall time of the clock pulses in order to prevent color mixing.

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