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.

Date of Patent:
Jun. 04, 1985

Filed:

Jul. 08, 1982
Applicant:
Inventor:

Yoshio Tokuyama, Yokohama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
360 102 ; 360 103 ; 360 70 ; 360 73 ; 360 75 ;
Abstract

A video signal reproducing apparatus capable of performing high-speed reproduction comprises a reproducing circuit having at least one rotary video head for scanning over a tape recorded with a video signal on tracks formed obliquely with respect to the longitudinal direction of the tape and a control pulse recorded on a track formed along the longitudinal direction of the tape, for reproducing the video signal from the oblique tracks, a tape driving circuit for causing the tape travel at a speed higher than a tape speed upon normal reproduction during high-speed reproduction, a motor controlled of its rotation, a motor speed detecting circuit for detecting the rotational speed of the motor and producing a rotation detection signal having a repetition frequency in accordance with the detected rotational speed, an input switching circuit for supplying a signal reproduced from the tape to a frequency-voltage converter upon high-speed reproduction, where the frequency-voltage converter is supplied with the rotation detection signal from the motor speed detecting circuit upon normal reproduction, and a servo circuit for controlling the tape driving circuit and/or the motor by using an output voltage of the frequency-voltage converter as a speed control signal.


Find Patent Forward Citations

Tokuyama, Yoshio. (1985). Reproducing apparatus capable of performing high-speed reproduction of a (U.S. Patent No. 4521815). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4521815

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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