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:
Oct. 22, 1985
Filed:
Oct. 09, 1981
Yasuaki Watanabe, Kasukabe, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A reproduced color video signal processing circuit in a rotary recording medium reproducing apparatus reproduces a recorded signal from a rotary recording medium which is recorded with a composite color video signal in which a carrier chrominance signal is frequency-converted into a low frequency band and multiplexed using a common frequency band within a part of a frequency band of a luminance signal, and levels of the carrier chrominance signal and a color burst signal are controlled according to the level of the carrier chrominance signal with respect to the color burst signal. The processing circuit comprises a carrier chrominance signal obtaining circuit for obtaining a carrier chrominance signal returned to the original frequency band by frequency-converting the reproduced composite color video signal, a level controlling circuit for controlling the level of the color burst signal to a constant value according to the level of the color burst signal within the carrier chrominance signal thus obtained, a time axis deviation compensation circuit for substantially compensating for a time axis deviation component of the carrier chrominance signal which is to be obtained by the carrier chrominance signal obtaining circuit, a time axis deviation component adding and frequency converting circuit for adding the time axis deviation component to the carrier chrominance signal thus obtained, and frequency-converting and returning the carrier chrominance signal to the low frequency band, and a luminance signal obtaining circuit for obtaining the luminance signal by subtracting the carrier chrominance signal returned to the low frequency band from the reproduced composite color viedo signal.