Signal processing device

Details Signal processing device Signal processing device

1991-10-21

1993-11-30

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 40, 332123, 332125, 332159, H04N 965, H04N 966

Patent

active

052670236

ABSTRACT:
A signal processing device is arranged to form a first output modulated signal by modulating an input information signal in accordance with a modulation carrier signal, to form a second output modulated signal by modulating the first output modulated signal in accordance with a modulation carrier signal which is identical to the above-stated modulation carrier signal, and to correct the input information signal by using the second output modulated signal. The modulation circuit of the device is thus arranged to have a minimal amount of leakage of the modulation carrier signal for the information signal, so that the device can be easily arranged as an integrated circuit.

REFERENCES:
patent: 3595989 (1971-07-01), Hoke, Jr.
patent: 3624275 (1971-11-01), Lunn
patent: 3628046 (1971-12-01), Billoti
patent: 4122491 (1978-10-01), Yamaguchi et al.
patent: 4481490 (1984-11-01), Huntley
patent: 4724405 (1988-02-01), Matthies et al.
patent: 5095290 (1992-03-01), Sevenhans et al.

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