초록 ▼

An imaging pixel array with event detectors for detecting input light signals and activating the imaging pixel array based on a predetermined threshold intensity of an input light. Each event detector is preferably made of auxiliary photosensitive pixels with a thresholding circuit. The imaging pixe

An imaging pixel array with event detectors for detecting input light signals and activating the imaging pixel array based on a predetermined threshold intensity of an input light. Each event detector is preferably made of auxiliary photosensitive pixels with a thresholding circuit. The imaging pixel array is activated to perform signal integration if the input light signal is above the threshold intensity. A self-triggered X-ray sensor can be realized with such event detectors. A CMOS active pixel sensor can be used as the imaging pixel array with advantages.

대표청구항 ▼

[ What is claimed is:] [1.] An imaging detection system, comprising:an image sensor, having a plurality of sensing pixels disposed relative to one another to form a pixel array, said sensing pixels being responsive to photons and including a charge storage structure that accumulates charge indicativ

[ What is claimed is:] [1.] An imaging detection system, comprising:an image sensor, having a plurality of sensing pixels disposed relative to one another to form a pixel array, said sensing pixels being responsive to photons and including a charge storage structure that accumulates charge indicative of said photons, thus producing photo-electrical signals having a relation with said photons;a control circuit, connected to said image sensor, operating to control said image sensor to operate between areset state in which said charge is not accumulated, and an integration state in which said charge is accumulated; andan event detector, disposed relative to said pixel array and electrically connected to said control circuit, having a photosensitive element to receive a portion of said photons, said event detector operating to effect a triggering mechanism for said control circuit that controls a state of said image sensor.