Tuan Thanh Ngo

US Patent:

7372649, May 13, 2008

Filed:

Apr 3, 2003

Appl. No.:

10/407011

Inventors:

Thomas Cougar VanEaton - Wylie TX, US
Bryan E. Bloodworth - Irving TX, US
Glenn Mayfield - Garland TX, US
Tuan Van Ngo - Eden Prairie MN, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G11B 5/09
G11B 5/02

US Classification:

360 46, 360 68, 327108, 327110

Abstract:

An apparatus for use in applying write signals for driving a write head to effect writing information to a memory device; the write signals including a first write signal and a second write signal; includes: (a) a directing circuit receiving the write signals, directing a current to establish a voltage across the write head in a first excursion toward a first polarity in response to the first write signal and directing the current to establish the voltage across the write head in a second excursion toward a second polarity substantially opposite the first polarity in response to the second write signal; (b) a first boost system coupled with the directing circuit and boosting the write voltage toward the first polarity during the first excursion; and (c) a second boost system coupled with the directing circuit and boosting the write voltage toward the second polarity during the second excursion.