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:
Jul. 21, 1987
Filed:
Jun. 13, 1984
Akira Hirota, Chigasaki, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A video signal recording and reproducing apparatus comprises a first sampling circuit for sampling a recording video signal which has a band with an upper limit frequency f.sub.a and is to be recorded by a sampling signal having a frequency f.sub.s, where the frequencies f.sub.a and f.sub.s satisfying a relation f.sub.a <f.sub.s <2f.sub.a and an equation f.sub.s =(2n+1)f.sub.H /2, n is an integer, and f.sub.H is a horizontal scanning frequency of the recording video signal, a recording and reproducing circuit for recording an output signal of the first sampling circuit on a recording medium and for reproducing the signal from the recording medium, a delay circuit for delaying the signal which is reproduced from the recording medium by the recording and reproducing circuit by a delay time of one horizontal scanning period, a second sampling circuit for alternately sampling input and output signals of the delay circuit by a sampling signal having the frequency f.sub.s, and an adding circuit for adding alternately sampled signals from the second sampling circuit, and for obtaining a reproduced output signal which has essentially been sampled at a frequency of 2f.sub.s.