Charge-transfer readout and white-video-defect suppression in X-Y image sensors

A method of detecting photosignals in solid-state image sensors is described. The technique employes bucket-brigade charge-transfer readout of a modified X-Y imaging array. This concept is further developed to cover its use in a single-pellet tricolor image sensor. A natural extension of this same bucket-brigade fan-in circuit leads to a method of mitigating the effects of white video defects in both solid-state image sensors and beam-scanned tubes.