Method and apparatus for signal pick-up from semiconductor image

Details Method and apparatus for signal pick-up from semiconductor image Method and apparatus for signal pick-up from semiconductor image

1981-04-15

1982-12-07

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358167, 358217, 358184, H04N 314, H04N 514, H04N 534

Patent

active

043630359

ABSTRACT:
Signals are picked off from semiconductor image or line sensors in clock pulse intervals corresponding to successive picture elements (in order to improve the signal-to-noise ratio, an amplifier with a high input resistance is used, the charge of the output capacitance of the sensor produced at the instant of the last clock pulse is substantially maintained during a first part of the clock interval, so that the full amplitude can be picked off after transients have died down and thereafter, in a second part of the clock pulse interval, the charge is drained away.

REFERENCES:
patent: 3136848 (1964-06-01), Woodworth
patent: 3238295 (1966-03-01), Meinl et al.
patent: 4101932 (1978-07-01), Wiggin
patent: 4274113 (1981-06-01), Ohba et al.
IEEE Transactions on Electron Devices, vol. ED-25, No. 2, pp. 85-89, Feb. 1978.

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