The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 1991
Filed:
Sep. 27, 1988
Seijiro Yasuki, Yokohama, JP;
Masahiro Yamada, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A signal separator performs an inter-line operation on a composite color video signal, thereby separating it into a luminance signal and a chrominance signal. A scan converter converts each of the luminance signal and the chrominance signal into a sequential scan signal on the basis of the double-speed changing of the luminance signal and the chrominance signal. A signal determination circuit determines whether the composite color video signal is a standard signal or a non-standard signal. A first clock producer produces first clocks to be phase-locked to a color subcarrier in accordance with the composite color digital video signal. A second clock producer produces second clocks to be phase-locked to horizontal synchronizing signals in accordance with the composite color digital video signal. A first controller causes the signal separator and the scan converter to operate in accordance with the first clocks when the signal determination circuit determines that the signal is a standard signal. A second controller causes the signal separator to operate in accordance with the first clocks, causes the scan converter to operate in accordance with the second clocks, and converts a sampling rate of each of the luminance signal and the chrominance signal separated by the signal separator in accordance with the first clock into a rate of the second clocks when the signal determination circuit determines that the signal is a non-standard signal.