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:
Feb. 24, 1987
Filed:
Nov. 19, 1984
Akira Hirota, Chigasaki, JP;
Victor Company of Japan Ltd., Yokohama, JP;
Abstract
A carrier chrominance signal recording apparatus comprises a first circuit for sampling a carrier chrominance signal at a sampling frequency which is four times a chrominance subcarrier frequency, and then quantizing the sampled signal so as to produce a first digital color signal, a second circuit for subjecting the first digital color signal to a phase shift process so as to produce a second digital color signal related to a carrier chrominance signal in which the phase of a chrominance subcarrier is equivalently and successively shifted by approximately 90.degree. in a predetermined direction for every one horizontal scanning period, a third circuit for converting the output second digital color signal of the second circuit into a frequency converted digital color signal which is in a low-frequency range, a circuit for obtaining an analog frequency converted carrier chrominance signal by subjecting the frequency converted digital color signal to a digital-to-analog conversion, and a circuit for recording the analog frequency converted carrier chrominance signal on a recording medium. A reproducing apparatus reproduces the signals recorded on the recording medium by the above recording apparatus.