Method and apparatus for recovering a signal from a charge trans

Details Method and apparatus for recovering a signal from a charge trans Method and apparatus for recovering a signal from a charge trans

1980-06-04

1982-05-18

Grimm, Siegfried H.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

3072382, 3072385, 329109, 365183, 365206, H03K 902

Patent

active

043307531

ABSTRACT:
Relatively noise-free information signals are recovered from a charge transfer device by demodulating sideband components of the output signal of the device at a selected harmonic of the pulse output frequency of the device. In a further refinement of the invention, the relative duty cycles between the clock signals employed to operate the device and the output signal from the device are chosen such that a minimum of power from the clock signals is present at the selected harmonic.

REFERENCES:
patent: 3946151 (1976-03-01), Kamiyama et al.
patent: 3946368 (1976-03-01), Chou
patent: 4060737 (1977-11-01), Gosney
patent: 4071853 (1978-01-01), Yamanaka
patent: 4121244 (1978-10-01), Nakabe et al.
patent: 4145721 (1979-03-01), Beaudouin et al.
White et al., "Characterization of Surface Channel CCD Image Arrays at Low Light Levels", IEEE J. Solid-State Circuits, Vol. SC-9, Feb. 1974, pp. 1-12.

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