Abstract A charge coupled device shift-register optical sensor with storage is provided which is capable of compensating automatically for continuous image exposure. Selected gates of the shift register are pre-disposed for a given time duration to sense the optical image in potential wells under the selected gates. Subsequently, other gates are pre-disposed sequentially to shift the sensed image along the shift register. The recorded image data is regenerated by the regenerating circuitry after a predetermined number of shifts so that the accumulated shift time giving rise to image exposure is less than the exposure time to provide total image sensing, thereby, providing a means for distinguishing between the full duration sensed image data and the image data sensed during shifting as a result of said continuous optical conveying of the image onto the shift register. The storage function is provided by recirculating the data from the output back to the input.
A charge coupled device shift register used as an optical sensor of the type having shifting gates interspersed with integration gates in which the integration gates and shifting gates are continuously illuminated by the optical image to be recorded; means or optically conveying the image to be recorded continuously onto said shift register array; means for dropping sense gate voltage to selected gates of said shift register for a given time duration sufficient to sense said image in the form of charge collection in the wells beneath the selected gates; means for dropping shift gate voltage to shift gates sequentially for comparatively short time durations with respect to said given time duration for sensing to shift said sensed image along said shift register while said shift gates have said image conveyed thereto by said optical conveying means; means for re-generating the record image data after a predetermined number of shifts; means for selecting the pre-determined number of shifts so that the accumulated shift time is less than said given time duration to sense said image, thereby providing a means of distinguishing between said full duration sensed image data and said image data sensed during shifting as a result of said continuous optical conveying of said image onto said shift register.
Claim 2
Dependent Claim
210 words
A charge coupled device shift register used as an optical sensor of the type having shifting gates interspersed with integration gates in which the integration gates and shifting gates are continuously illuminated by the optical image to be recorded; means or optically conveying the image to be recorded continuously onto said shift register array; means for dropping sense gate voltage to selected gates of said shift register for a given time duration sufficient to sense said image in the form of charge collection in the wells beneath the selected gates; means for dropping shift gate voltage to shift gates sequentially for comparatively short time durations with respect to said given time duration for sensing to shift said sensed image along said shift register while said shift gates have said image conveyed thereto by said optical conveying means; means for re-generating the record image data after a predetermined number of shifts; means for selecting the pre-determined number of shifts so that the accumulated shift time is less than said given time duration to sense said image, thereby providing a means of distinguishing between said full duration sensed image data and said image data sensed during shifting as a result of said continuous optical conveying of said image onto said shift register.