Integrated sensor with frame memory and programmable resolution

Details Integrated sensor with frame memory and programmable resolution Integrated sensor with frame memory and programmable resolution

1999-06-01

2000-05-02

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250205, 348317, 348303, H01J 4014

Patent

active

060575395

ABSTRACT:
An image sensor operable to vary the output spatial resolution according to a received light level while maintaining a desired signal-to-noise ratio. Signals from neighboring pixels in a pixe patch with an adjustable size are added to increase both the image brightness and signal-to-noise ratio. One embodiment comprises a sensor array for receiving input signals, a frame memory array for temporarily storing a full frame, and an array of self-calibration column integrators for uniform column-parallel signal summation. The column integrators are capable of substantially canceling fixed pattern noise.

REFERENCES:
patent: 5402171 (1995-03-01), Tagami et al.
patent: 5471515 (1995-11-01), Fossum et al.

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