Picture pick-up device including a solid-state sensor and an ele

Details Picture pick-up device including a solid-state sensor and an ele Picture pick-up device including a solid-state sensor and an ele

1988-06-09

1990-10-23

Groody, James J.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821319, 35821324, H04N 315, H04N 5235

Patent

active

049656716

ABSTRACT:
In the construction of the sensor as a frame transfer sensor (FT) a control circuit therefor may not only be utilized for the information transfer and the electronic shutter, but also for a third purpose, namely for a reduction of the smear before integration. Starting from the control circuit for an information frame transfer (.phi..sub.A, TG, .phi..sub.B), a parallel information shift (.phi..sub.B, TG) and a serial information shift (.phi..sub.C) at the sensor and the electronic shutter (ESPS, BUF, MF, .phi..sub.A) at a pick-up member (PP) of the sensor (FT), the smear reduction is obtained by the use of a pulse generator (JC, FF, AN,I) at the electronic shutter, which generator is adapted to supply a series of reset pulses (ESPS) with a minimum number. A minimum number of two line-frequency pulses occurring in line blanking periods has been given as an example.

REFERENCES:
patent: 3931463 (1976-01-01), Levine
patent: 4032976 (1977-06-01), Levine
patent: 4769709 (1988-09-01), Van De Steeg

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