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:
Sep. 13, 1983

Filed:

Apr. 14, 1981
Applicant:
Inventors:

Yoshiharu Ueki, Kawagoe, JP;

Shouzaburou Sakaguchi, Kawagoe, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 71 ; 360 721 ; 360 744 ;
Abstract

A device for accurately detecting non-recorded segments on a magnetic tape in fast-forward and rewind modes. The output of a magnetic head is coupled through an equalizer amplifier and limiter amplifier to convert it to a digital pulse signal which is applied to the clear input of a counter the clock input of which is coupled to an oscillator. A higher order output bit is connected to the clock input of a flip-flop which controls solenoids for setting the fast-forward and rewind modes. When no pulses of the digital pulse signal are received within a predetermined period, indicative of the presence of a non-recorded segment, the counter produces an output signal which operates the flip-flop.


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