Accession Number : ADD008455

Title :   Feed-Forward Compensated Low-Loss CCD Regeneration Apparatus.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Sauer,D J

Report Date : 06 Feb 1981

Pagination or Media Count : 14

Abstract : The present invention utilizes a feed-forward regeneration circuit to compensate for the modulation of the trailing bias charge by the signal charge in a low-loss charge coupled device. The charge signal is sensed one or two stages before the regeneration stage. The sensed signal is delayed prior to application to the regeneration stage by an amount equal to the signal transit time through the charged coupled device to the regeneration stage. The sensed signal is used to modulate the trailing bias level which is produced by the signal regenerator in a direction that is opposite to the modulation caused by subsequent first-order charge transfer losses. Objects of the present invention are to provide an improved low-loss charge coupled device regeneration stage. To provide an improved low-loss charge coupled device regeneration stage to compensate for the modulation of the trailing bias charge by the signal charge in a charge coupled device. To provide an improved low-loss charge coupled device regeneration stage wherein second order charge transfer losses are improved, and to provide an improved low-loss charge coupled device regeneration stage wherein a feed-forward circuit provides a sensed signal to modulate the trailing bias level in a direction opposite to the modulation caused by subsequent first-order charge transfer losses.

Descriptors :   *Patent applications, *Charge coupled devices, *Regeneration(Engineering), Low loss, Charge transfer, Signal processing, Memory devices, Digital systems, Metal oxide semiconductors, Charge carriers, Carrier mobility, Bias

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE