Data receiving and processing circuit

Details Data receiving and processing circuit Data receiving and processing circuit

1977-12-29

1980-12-23

Martin, John C.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

307351, 307355, 307358, 328117, 328135, 328146, H04N 900

Patent

active

042414555

ABSTRACT:
Detected weak signals representative of digital data signals are amplified which produces distorted digital data signals comprising an alternating current (A.C.) voltage signal component and a direct current (D.C.) voltage signal component. A processing circuit filters out the D.C. voltage signal component and converts the A.C. signal component into two substantially D.C. voltage signals representative of the peaks of the A.C. voltage signal component. These substantially D.C. voltage signals are applied across a voltage divider to provide voltage signals representative of the peak voltages of the original detected weak signals and to provide intermediate voltages which are uneffected by changes in magnitude and distortion of the A.C. voltage signal component of the digital data signals.

REFERENCES:
patent: 3225213 (1965-12-01), Hinrichs et al.
patent: 3502993 (1970-03-01), Schurzinger et al.
patent: 3566281 (1971-02-01), Baumann
patent: 3599105 (1971-08-01), Weir et al.
patent: 3599151 (1971-08-01), Harr
patent: 3609407 (1971-09-01), Garuts
patent: 3638183 (1972-01-01), Progler et al.
patent: 3832577 (1974-08-01), Harr
patent: 3893180 (1975-07-01), Braun et al.
patent: 4019048 (1977-04-01), Maione et al.

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