Dennis Z Chen

US Patent:

6445545, Sep 3, 2002

Filed:

Mar 21, 2000

Appl. No.:

09/532057

Inventors:

Lin Guo - Milpitas CA
Dennis Chen - Milpitas CA
Matthew OHara - Oakland CA

Assignee:

Maxtor Corporation - Longmont CO

International Classification:

G11B 2116

US Classification:

3602451

Abstract:

A slider support structure is disclosed for minimizing off-rack due to disk flutter. In one embodiment, the slider support structure includes a gimbal assembly ( ). The assembly ( ) includes an outer ring ( ) and an inner ring ( ). The outer ring ( ) is connected to the inner ring ( ) via narrow strips ( and ) adjacent to the front ( ) and back ( ) surfaces of the slider body ( ). The inner ring ( ) is attached to the left ( ) and right ( ) surfaces of the slider body ( ) via narrow strips ( and ). The strips ( and ) interconnecting the inner ring ( ) and outer ring ( ) define a flexible hinge that allows the slider body ( ) to pivot relative to the assembly ( ) about an axis ( ) which, in this case, is the roll axis. Similarly, the strips ( and ) define a flexible hinge which allows the slider to pivot relative to the assembly ( ) about another axis ( ) which, in this case, is the pitch axis. The axes ( and ) are disposed close to the lower surface of the slider so that head off-track associated with such pivotal is minimized.

US Patent:

6587299, Jul 1, 2003

Filed:

Jan 28, 2000

Appl. No.:

09/493735

Inventors:

Bernhard Hiller - San Jose CA
Glenn Albert - Longmont CO
Dennis Chen - Milpitas CA

Assignee:

Maxtor Corporation - Longmont CO

International Classification:

G11B 1546

US Classification:

360 7303, 360 75, 318254

Abstract:

A method for overcoming a stiction condition in a disk drive is disclosed. In one embodiment, the method includes the steps of: (1) providing a plurality of disks each having a pair of disk surfaces, each of the disk surfaces having a corresponding actuator arm assembly including a head; (2) providing a spin motor for rotating said plurality of disks when a stiction condition does not exist; (3) providing a voice coil motor for positioning said heads relative to said disk surfaces when a stiction condition does not exist; (3) providing a microprocessor for controlling application of a voice coil motor current to said voice coil motor and for controlling application of a spin motor current to said spin motor; (4) applying a spin motor current to said spin motor; (5) sensing that the spin motor is not rotating said plurality of disks and, hence, a stiction condition exists; (6) applying a first oscillating current to said voice coil motor in response to said stiction condition, said first oscillating current having a fixed frequency and a first amplitude; (7) determining whether said spin motor is rotating in response to said first oscillating current; and, (8) continuing to apply said first oscillating current for at least one commutation state of said spin motor after determining that said spin motor is rotating in response to said first oscillating current.

US Patent:

20080242277, Oct 2, 2008

Filed:

Oct 1, 2007

Appl. No.:

11/865604

Inventors:

Dennis Chen - Livermore CA, US
Hudson George - Livermore CA, US
Adam Lavine - Livermore CA, US
Eric Allen - Livermore CA, US

Assignee:

FUNMOBILTIY INC. - Livermore CA

International Classification:

H04M 3/42

US Classification:

4554142

Abstract:

A method for social networking includes storing at least one profile on at least one server, the profile being associated with at least one local profile on a mobile device and wherein each of the profile and the local profile includes social networking information, receiving changes to one of the profile and the local profile, and synchronizing the profile and the local profile.

Address:

1 Cres Way APT 1309, San Francisco, CA 94134

Phone:

(248)4621610

VIN:

1FMCU0E72CKB19793

Make:

FORD

Model:

ESCAPE

Year:

2012