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:
Dec. 24, 1991
Filed:
Jan. 24, 1990
Charles I Peddle, Scotts Valley, CA (US);
James M Donahue, Los Alamitos, CA (US);
Michael T Dugan, Thousand Oaks, CA (US);
William G Swinton, Santa Cruz, CA (US);
Bruce A Fairman, Woodside, CA (US);
Robert G Taylor, Jr, Santa Cruz, CA (US);
John R Masters, Aptos, CA (US);
Glenn M Stark, Santa Cruz, CA (US);
Kenneth M Stein, San Jose, CA (US);
Warren L Dalziel, Monte Sereno, CA (US);
Tandon Corporation, Moorpark, CA (US);
Abstract
A disk drive system includes a disk drive controller system having separate head positioning and data transfer subsystems and supporting up to four disk drives, two of which may be removable and two of which may connect through a standard ST506 interface. The system provides a read and write protected cylinder for removably drive and a read only cylinder for removable drives which may store a unique serial number as well as other write protected data. Each removable disk drive may includes a register storing an identification code which may be used to control operation of the drive.