Solid state sensor having logarithmic photovoltaic response, wit

Details Solid state sensor having logarithmic photovoltaic response, wit Solid state sensor having logarithmic photovoltaic response, wit

1992-07-15

1994-02-22

Powell, Mark R.

Television

Camera, system and detail

Combined image signal generator and general image signal...

257292, 257431, 348230, 348251, H04N 5335

Patent

active

052892867

ABSTRACT:
A solid-state image sensing apparatus includes a solid state image sensing device having a characteristic that an output voltage thereof natural-logarithmically varies in accordance with light reception amount. An image sensing output signal is obtained with respect to each pixel when uniform light is irradiated to the solid-state image sensing device. The difference is then calculated between an image sensing output signal obtained with respect to each pixel in actual sensing and an image sensing output signal with respect to a pixel corresponding thereto which signal is stored, to form an image signal.

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