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:
Aug. 02, 1988
Filed:
Feb. 28, 1985
Katsuyuki Shudo, Yokohama, JP;
Hisao Kinjo, Yokohama, JP;
Keigo Okano, Yokohama, JP;
Yoshiaki Hanashiro, Yokohama, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
In apparatus for recording/reproducing a composite video signal on and from a rotary recording medium (1), the field of the composite video signal is detected and only odd or even field signal is delayed by one half (H/2) a horizontal scanning period so that the composite video signal is changed to a modified composite video signal which is recorded on the rotary recording medium (1) together with a field distinguishing signal (Sf) produced using the result of the field detection. The field distinguishing signal (Sf) is arranged to be located at a given time position with respect to a predetermined vertical sync signal of every one frame period of the recording signal on a rotary recording medium (1) driven and rotated at a rotational period equal to the vertical scanning period of the composite video signal. This field distinguishing signal is extracted from a reproduced signal obtained in reproduce mode so that field switching is effected using the reproduced field distinguishing signal thereby delaying only even or odd field signal, which has not been delayed on recording, for obtaining a composite video signal having sync signals which with regular interlaced scanning can be performed.