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:
Aug. 09, 1988
Filed:
Aug. 26, 1985
Kanji Yamamoto, Hitachi, JP;
Isao Yamazaki, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A floppy disc apparatus has a single printed wiring board mounting thereon a control circuit section including therein an overall control circuit and write circuit section, a head switching circuit and reproduction circuit section, and a motor drive circuit section. The motor drive circuit section is disposed in opposite relation to the overall control circuit and write circuit section and the head switching circuit and reprodcution circuit section with the drive motor therebetween. The overall control circuit and write circuit section and the head switching circuit and reproduction circuit section are disposed in successive relation with the head switching circuit and reproduction circuit section disposed adjacent to a connector for connecting lead wires of a head mechanism. Due to such separate arrangement of the driving circuit section and the signal circuit section, the present invention permits the control circuit section to be mounted on a single printed wiring board with very excellent noise resistance, thus resulting in the effects of improving noise resistance and the assembly efficiency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile