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. 08, 2002
Filed:
Feb. 15, 2001
Applicant:
Inventor:
Akio Fujikawa, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/10 ;
U.S. Cl.
CPC ...
G05F 1/10 ;
Abstract
A semiconductor integrated circuit device for a magnetic disk apparatus has analog circuits such as a read/write circuit and digital circuits such as an interface driver circuit, a control circuit, and a stepping motor driver circuit, all of these circuits operating on a single supply voltage. The semiconductor integrated circuit device further has a voltage regulator whose output voltage is lower than the supply voltage and variable according to the voltage applied to an output voltage adjustment terminal. The control circuit operates on the output voltage of this regulator.