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:
Oct. 16, 2001
Filed:
Jul. 26, 1999
Applicant:
Inventor:
Yujiro Okamoto, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/03 ; G11B 5/02 ; G11B 5/09 ;
U.S. Cl.
CPC ...
G11B 5/03 ; G11B 5/02 ; G11B 5/09 ;
Abstract
A magnetic reproducing apparatus uses a magnetic head to read data recorded on a magnetic recording medium. The signal reproduced by the magnetic head is, in a reading circuit, amplified by an amplifier circuit. A compensation circuit compares the bias voltage across the magnetic head with a reference voltage to detect variation in the bias voltage and compensates for the variation in accordance with the detection result. In the magnetic reproducing apparatus, the amplification factor of the amplifier circuit is set by a control signal fed in via a single switching terminal, and the reference voltage is set in a manner interlocked therewith.