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. 11, 1991
Filed:
Apr. 17, 1990
Applicant:
Inventors:
Carl Bonke, Rancho Santa Margarita, CA (US);
Han Jen, Diamond Bar, CA (US);
Assignee:
Western Digital Corporation, Irvine, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364900 ; 3649269 ; 36494071 ; 3649424 ; 3649521 ;
Abstract
The invention provides a method and circuit for control of intelligent or integrated disk drives whereby a single computer address port may be used for control of two intelligent disk drives. The circuit requires only a single jumper connection for definition of the drive address. Tristate drivers on all output circuits from the disk drive controller to the host computer are disabled when the drive is not selected.