Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1994-08-22
1995-10-31
Chin, Tommy P.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358323, H04N 979
Patent
active
054634741
ABSTRACT:
A pilot signal eliminating circuit for eliminating pilot signals from chrominance signals as part of video signals recorded on a magnetic recording medium. The pilot signals have different frequencies from one track to another neighboring track on the magnetic recording medium, and are previously superimposed on the chrominance signals, which in turn are previously changed to a lower frequency range. The circuit includes a frequency converter for shifting the frequency of the chrominance signals to a higher frequency range, a pilot signal take-out circuit for taking out the pilot signals by subtracting an output signal of the frequency converter delayed by one field from an undelayed output signal of the frequency converter and a subtraction circuit for subtracting an output of the pilot signal take-out circuit from an output of the frequency converter,
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Chevalier Robert
Chin Tommy P.
Maioli Jay H.
Sony Corporation
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