Charge transfer apparatus having light sensitivity control means
AssigneeTokyo Shibaura Electric Co., Ltd.
InventorNozomu Harada
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Abstract
A charge transfer apparatus having light sensitivity control means comprises a charge transfer device wherein a plurality of electrodes are provided on a semiconductor substrate in a manner insulated therefrom, means for supplying a driving pulse waveform of a constant period covering an integration period and a transfer-readout period to each of said electrodes of charge transfer device, detecting means for detecting the amount of light incident into the charge transfer device or the output signal level from the charge transfer device, and control means for controlling the width of an integration pulse within said integration period in accordance with the signal detected by the detecting means.
Claims3
In a system for light sensitivity control of an image pickup device comprising a charge transfer device which comprises a plurality of electrodes provided on a semiconductor substrate in a manner insulated therefrom and means for controlling the light sensitivity of said image pickup device by controlling the width of an integrating pulse supplied from a driving voltage source to said electrodes within a constant integration period, the improvements wherein said charge transfer device further includes means for mixing a plurality of pulses with said driving voltage in the manner that said plurality of pulses are inserted within an insensitive period resulting from the integration pulse width control.
Dependencies are inferred from the claim text.