Glynda W Eaton

US Patent:

20070236827, Oct 11, 2007

Filed:

Apr 7, 2006

Appl. No.:

11/279096

Inventors:

Eaton Eaton - San Jose CA, US
Glynda Eaton - Morgan Hill CA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11B 15/00

US Classification:

360093000

Abstract:

An integral recording head, for use in a linear tape drive system, includes a circumferentially grooved roller guide assembly and a recording head actuator assembly. The circumferential groove feature is incorporated on the surfaces of the roller guide assembly, and provides a substantial frictional contact force that acts to reduce the lateral motion, and further attenuates high frequency lateral disturbances of the magnetic tape. The reduced high frequency content of the lateral disturbances significantly improves the ability of the actuator to achieve a desired track following control. The grooved roller guide assembly is formed integrally of two solid cylindrical contact surfaces separated by a circumferential slot that accommodates the recording head actuator assembly.

US Patent:

20070268616, Nov 22, 2007

Filed:

Jul 31, 2007

Appl. No.:

11/830869

Inventors:

James Eaton - Morgan Hill CA, US
Glynda Eaton - Morgan Hill CA, US

International Classification:

G11B 21/02

US Classification:

360075000

Abstract:

A method and apparatus for writing timing-based magnetic servo band patterns on magnetic storage media. The apparatus includes a magnetic head and a tri-state driver. The driver is adapted to control three magnetic head states including two writes states having positive and negative current outputs, respectively, for performing a write sequence and a rest state, having no current output for avoiding overwriting of the magnetic pattern between write sequences. The driver is further adapted to gradually change the magnetic head state from a rest state to a write state before beginning a write sequence and to gradually change the magnetic head state back to a rest state upon completing a write sequence. Thus, strong uniform signal pulses are produced upon playback of the magnetic pattern.

US Patent:

20080180841, Jul 31, 2008

Filed:

Apr 1, 2008

Appl. No.:

12/060462

Inventors:

JAMES HOWARD EATON - MORGAN HILL CA, US
Glynda Williams Eaton - Morgan Hill CA, US

Assignee:

INTERNATIONAL BUSINESS MACHINES CORPORATION - Armonk NY

International Classification:

G11B 15/60

US Classification:

36013021

Abstract:

An integral recording head, for use in a linear tape drive system, includes a circumferentially grooved roller guide assembly and a recording head actuator assembly. The circumferential groove feature is incorporated on the surfaces of the roller guide assembly, and provides a substantial frictional contact force that acts to reduce the lateral motion, and further attenuates high frequency lateral disturbances of the magnetic tape. The reduced high frequency content of the lateral disturbances significantly improves the ability of the actuator to achieve a desired track following control. The grooved roller guide assembly is formed integrally of two solid cylindrical contact surfaces separated by a circumferential slot that accommodates the recording head actuator assembly.

US Patent:

20060114596, Jun 1, 2006

Filed:

Nov 30, 2004

Appl. No.:

10/999383

Inventors:

James Eaton - Morgan Hill CA, US
Glynda Eaton - Morgan Hill CA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11B 21/02
G11B 5/09
G11B 5/584

US Classification:

360075000, 360048000, 360077120

Abstract:

A method and apparatus for writing timing-based magnetic servo band patterns on magnetic storage media. The apparatus includes a magnetic head and a tri-state driver. The driver is adapted to control three magnetic head states including two writes states having positive and negative current outputs, respectively, for performing a write sequence and a rest state, having no current output for avoiding overwriting of the magnetic pattern between write sequences. The driver is further adapted to gradually change the magnetic head state from a rest state to a write state before beginning a write sequence and to gradually change the magnetic head state back to a rest state upon completing a write sequence. Thus, strong uniform signal pulses are produced upon playback of the magnetic pattern.

US Patent:

20060114609, Jun 1, 2006

Filed:

Nov 30, 2004

Appl. No.:

10/999387

Inventors:

James Eaton - Morgan Hill CA, US
Glynda Eaton - Morgan Hill CA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11B 5/10

US Classification:

360129000

Abstract:

A tape recording head/apparatus has cable connection pads aligned along a direction that run substantially perpendicular to a head actuation direction, which urges a ribbon-type external cable to be bent in its most flexible direction when the head module moves.