Camera for recording television, photographic or cinematographic

Details Camera for recording television, photographic or cinematographic Camera for recording television, photographic or cinematographic

1986-09-02

1988-05-03

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821315, 358209, H04N 5335

Patent

active

047423943

ABSTRACT:
A camera formed with a solid-state image sensor (FTD) comprising a pick-up member (I), a storage member (M) and a shift register member (SR) with three output shift registers (SR1, SR2, SR3). The picture signals (S1, S2, S3) originating from the output registers must be combined in a monochrome camera or a color camera with the aid of several image sensors to a balanced composite picture signal (S123). To this end the camera comprises two control systems for fixing one and the same black level in the three picture signals. Three clamping circuits precede a signal combination circuit (11), two clamping circuits (2, 3) and one (4) operating at a control voltage (V1, V2) and a reference voltage (Vref), respectively. The two control systems (18, 22, 26, 2) and (19, 23, 27, 3) succeed the circuit (11), each system being formed with multiplier circuits (18, 19) for the supply of the picture signal (S123) and a clock pulse signal (CP1, CP2) associated with the relevant register (SR1, SR2). When the dark current information originating from below a dark strip (B) occurs, each multiplier circuit (18, 19) is connected via switching circuits (22, 23) controlled by a black gating pulse signal (GBP) to a storage circuit (26, 27) for the supply of the control voltage (V1, V2).

REFERENCES:
patent: 3824337 (1974-07-01), Sangster
patent: 4167755 (1979-09-01), Nagumo
patent: 4475125 (1984-10-01), Esser

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