Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1987-02-06
1990-04-10
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358166, 358162, H04N 704
Patent
active
049165380
ABSTRACT:
A video processor for generating an improved video display by synthesizing high frequency components of a received video signal in a manner that the frequencies of the synthesized high frequency components are greater than the upper frequency limit of the received video signal. A selected higher frequency band of the received signal modulates a continuous wave signal having a selected frequency so that the upper sideband frequency components of the modulated output are greater than the video signal upper frequency limit. The lower sideband components of the modulated output are removed and the upper sideband components are then added in phase with the original video signal to generate a composite signal having a greater bandwidth than the original received signal for generating the improved video display.
REFERENCES:
patent: 2761151 (1955-08-01), Smith
patent: 4030121 (1977-06-01), Faroudja
patent: 4660072 (1987-04-01), Fukinuki
Faroudja et al., "Digital and Analog Enhancement Techniques", SMPTE Journal, 1/78, vol. 87, #1, pp. 24-28.
Carver Robert W.
Ross Montgomery F.
Carver Corporation
Groody James J.
Harvey David E.
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