Selectable resolution line-scan image sensor

Details Selectable resolution line-scan image sensor Selectable resolution line-scan image sensor

1985-09-13

1990-04-17

Munson, Gene M.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

357 30, 2505781, 377 60, 307311, H01L 2978, H01L 2714, H01L 3100, G11C 1928

Patent

active

049185063

ABSTRACT:
A line scan image sensor capable of operating at several different spatial sampling frequencies is provided by utilizing a line scanning array having sampling photoelements of different surface areas. The spatial sampling frequency of the sensor can be varied by selectively combining the charge packets generated by the individual photoelements. In a preferred embodiment, photoelements having two different surface areas are used, with the ratio of the smaller surface area with respect to the larger surface area being 1:.sqroot.2. A programmable amplifier is provided to normalize the outputs of photoelements having different surface areas so that a uniform illumination on different photoelements will produce a uniform response. The programmable amplifier can also be programmed to equalize the outputs of the sensor between the different spatial sampling frequency modes.

REFERENCES:
patent: 4281254 (1981-07-01), Seachman
patent: 4495422 (1985-01-01), Wiggins
patent: 4539597 (1985-09-01), Kinoshita et al.
patent: 4540901 (1985-09-01), Suzuki

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