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:
Feb. 25, 1997
Filed:
Mar. 21, 1995
Koji Kodama, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Configuration for implementing a control unit of a disk apparatus having functions of high-precision head positioning control and data read/write control and sophisticated interface function with a small size and a low cost. A driver control microprocessor for embedded digital servo processing has a memory of a relatively small capacity and is suited for high-speed processing and an A/D converter. An interface function control microprocessor for generalized control of an interface function device with respect to a high rank device has a memory of a relatively large capacity and is suited for low-speed processing. The driver control microprocessor and the interface function control microprocessor are mounted within a single IC package.