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:
Jun. 01, 1993
Filed:
Nov. 03, 1989
Applicant:
Inventor:
Akira Nakamura, Kyoto, JP;
Assignee:
Rohm Co. Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 46 ; 360 68 ;
Abstract
A magnetic recording circuit capable of recording information on a disk-shaped magnetic recording medium such as a floppy disk. In storing the information on the recording medium, a write current is varied in quantity more smaller for a more inner track and more larger for a more outer track. The current to flow to a write coil is controlled by selecting one of a plurality of current-mirror output-side transistors through which the current may flow. This selecting is performed by a track counter which realizes a storage track by counting a string of count signals corresponding to the location of the track.