Noise reduction circuit for charge coupled imaging device

Details Noise reduction circuit for charge coupled imaging device Noise reduction circuit for charge coupled imaging device

2005-09-27

2005-09-27

Moe, Aung (Department: 2612)

Television

Camera, system and detail

Solid-state image sensor

Reexamination Certificate

active

06950137

ABSTRACT:
An integrated noise reduction circuit for a charge coupled imaging device having a floating diffusion type amplifier which converts signal electric charges obtained by photoelectric conversion into a voltage signal. The noise reduction circuit has a biasing circuit which is coupled to an input terminal for receiving an output signal of the charge coupled imaging device via a coupling capacitor and which supplies a predetermined bias potential to the first input terminal, a clamping circuit which clamps each of reset potential output portions of a signal that is supplied from the biasing circuit via a clamping capacitor and that has the predetermined bias potential applied by the biasing circuit to a predetermined reference potential, and a sample and hold circuit which samples and holds signal potential output portions of a signal outputted from the clamping circuit by using sampling pulses.

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