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:
Nov. 16, 1999
Filed:
May. 29, 1997
Applicant:
Inventor:
Scott G Sorenson, Lakeville, MN (US);
Assignee:
Seagate Technology, Inc., Scotts Valley, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 68 ; 360 46 ;
Abstract
A disc drive includes a recording head preamplifier circuit having a plurality of preamplifiers. Each preamplifier includes a receiver circuit and a preamplifier enable circuit. The receiver circuit receives a serial command having command address bits. The preamplifier enable circuit is operatively coupled to the receiver circuit and generates an enable output for enabling the preamplifier when the command address bits match a first predetermined logic pattern which is unique to chat preamplifier and when the command address bits match a second predetermined logic pattern which is universal to the plurality of preamplifiers.