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:
Jan. 07, 1997
Filed:
Dec. 30, 1993
Applicant:
Inventor:
Tohru Matsuno, Chofu, JP;
Assignee:
Otari Inc., Chofu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G11B / ;
U.S. Cl.
CPC ...
324212 ; 360 31 ;
Abstract
In a record medium checking device, a signal recorded on record medium is reproduced, then the absence of reproduced signal is detected. The device includes a reproducing means for reproducing the signal recorded on the record medium to output the reproduced signal, a discriminating means for comparing the reproduced signal with a reference signal to output a discriminating signal, a signal generating means for generating detecting clock pulses, and a counter to count the detecting clock pulses. The output of the counter is a check signal based on the discriminating signal.