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. 01, 2004
Filed:
Sep. 10, 2001
Andrew Bishop, Essex, VT (US);
Maxtor Corporation, Longmont, CO (US);
Abstract
A technique and associated circuitry are provided for measuring a buffered write head voltage, and measurement of thin-film write head DC head voltage in a disk-drive, along with a procedure for calibrating/optimizing the write current amplitude based on the measurement of the buffered write head voltage. A write driver includes a terminating resistor, coupled to the write element of a transducer head in a disk drive, wherein controlling the write current of the write driver includes the steps of measuring the resistance R of the terminating resistor; measuring the resistance R of the write element; and generating the write current amplitude based on the resistances R and R .