Image signal processing apparatus for image sensor

Details Image signal processing apparatus for image sensor Image signal processing apparatus for image sensor

1994-05-24

1996-08-20

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358446, 358461, H04N 140

Patent

active

055484131

ABSTRACT:
In an image signal processing apparatus, an amplifier for amplifying the output signal of an image sensor and an A/D converter for performing an A/D conversion upon the output signal of the amplifier are provided. When the output signal of the image sensor indicates a white level reference signal, a gain G of the amplifier is controlled so that the output signal of the A/D converter is brought close to a predetermined value. When the gain G reaches its minimum or maximum value, an alarm signal is generated.

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