Daniel Nguyen

US Patent:

7830039, Nov 9, 2010

Filed:

Dec 28, 2007

Appl. No.:

11/965943

Inventors:

Daniel P. Nguyen - Campbell CA, US
Steve X. Chi - Cupertino CA, US

Assignee:

SanDisk Corporation - Milpitas CA

International Classification:

H02J 7/00

US Classification:

307 65

Abstract:

Methods and systems for automatically and/or locally adjusting power-valid detection. In one class of embodiments, local power-on-reset circuits are included in individual power islands; in another class of embodiments, the power-on-reset circuit is automatically reprogrammed, depending on the detected interface voltage level, to use the same circuitry for power-valid detection in either case.

US Patent:

7859134, Dec 28, 2010

Filed:

Dec 21, 2007

Appl. No.:

12/005056

Inventors:

Steve X. Chi - Cupertino CA, US
Yongliang Wang - Saratoga CA, US
Ekram Hossain Bhuiyan - San Jose CA, US
Daniel P. Nguyen - Campbell CA, US
Vincent Anthony Condito - San Jose CA, US
Po-Shen Lai - San Jose CA, US

Assignee:

SanDisk Corporation - Milpitas CA

International Classification:

H02J 1/00
H02J 3/00

US Classification:

307 80

Abstract:

A method for operating an electronic product having an application specific semiconductor circuit (ASIC) including in its circuitry both a linear regulator module for use with an optional external capacitance and a capless regulator module coupled to internal capacitance of the product selects a low-power sub-module or high-power sub-module of the capless regulator module for use in a power-up phase of the ASIC. Control logic of the ASIC determines if an external capacitance is present. If so, then the high-power capless sub-module is used during a power-up phase of the ASIC; if not only the low-power capless sub-module is used during the power-up phase of the ASIC. After power-up of the ASIC, the control logic may select the linear regulator module for certain times of operation and the capless regulator module for other times of operation or it may select one or the other for all times of post-power-up operation.

US Patent:

7875996, Jan 25, 2011

Filed:

Dec 21, 2007

Appl. No.:

12/005144

Inventors:

Daniel P. Nguyen - Campbell CA, US
Steve X. Chi - Cupertino CA, US
Po-Shen Lai - San Jose CA, US

Assignee:

SanDisk Corporation - Milpitas CA

International Classification:

H02J 1/00
H02J 3/00

US Classification:

307 80

Abstract:

An electronic product includes an application specific semiconductor chip (ASIC) device which includes in its circuitry both a linear regulator module configured to be coupled to an optional external capacitance and a capless regulator module configured to be coupled to internal capacitance of the electronic product. Control logic of the ASIC device is responsive to a regulator selection signal for selecting one of the linear regulator module and the capless regulator module for use in powering the ASIC device. The control logic may select the linear regulator module for certain times of operation and the capless regulator module for other times of operation.

US Patent:

7948264, May 24, 2011

Filed:

Dec 31, 2007

Appl. No.:

11/967580

Inventors:

Yongliang Wang - Saratoga CA, US
Daniel P. Nguyen - Campbell CA, US

Assignee:

SanDisk Corporation - Milpitas CA

International Classification:

H03K 19/173
G06F 1/00

US Classification:

326 38, 713300

Abstract:

A new approach for managing turn-on of power islands uses a precharge phase to begin the process of bringing up the island's internal supply voltage, while minimizing transients and associated power-control-logic instability.

US Patent:

8295013, Oct 23, 2012

Filed:

Feb 16, 2012

Appl. No.:

13/398578

Inventors:

Tzong-Shii Pan - San Jose CA, US
Daniel Nguyen - Milpitas CA, US
Shujun Tang - Santa Cruz CA, US

Assignee:

Western Digital Technologies, Inc. - Irvine CA

International Classification:

G11B 5/127

US Classification:

3602454

Abstract:

A head stack assembly (HSA) for a disk drive includes an actuator body, at least one actuator arm extending from the actuator body, and a flexible printed circuit (FPC). The FPC includes first and second pluralities of electrically conductive FPC traces, each having a distal portion that terminates at a respective one of a plurality of FPC bond pads. The HSA also includes a head gimbal assembly (HGA) having a laminate flexure with a plurality of electrically conductive flexure bond pads that are bonded to the plurality of FPC bond pads. A width of at least one of the first plurality of FPC traces is greater than a width of at least one of the second plurality of FPC traces. The distal portion of at least one of the first plurality FPC traces includes a first opening therethrough, for example less than 1 mm from its corresponding FPC bond pad.

US Patent:

20030124706, Jul 3, 2003

Filed:

Jun 21, 2002

Appl. No.:

10/168425

Inventors:

Junming Yang - San Jose CA, US
Mariah Baughn - San Leandro CA, US
Neil Burford - Durham CT, US
Janice Au-Young - Brisbane CA, US
Dyung Lu - San Jose CA, US
Roopa Reddy - Sunnyvale CA, US
Henry Yue - Sunnyvale CA, US
Daniel Nguyen - San Jose CA, US
Y. Tang - San Jose CA, US
Monique Yao - Mountain View CA, US
Preeti Lal - Santa Clara CA, US

International Classification:

C12Q001/68
C07H021/04
A61K038/48
C12N009/64
C12P021/02
C12N005/06

US Classification:

435/226000, 435/069100, 435/320100, 435/325000, 435/006000, 424/094630, 536/023200

Abstract:

The invention provides human proteases (PRTS) and polynucleotides which identify and encode PRTS. The invention also provides expression vectors, host cells, antibodies, agonists, and antagonists. The invention also provides methods for diagnosing, treating, or preventing disorders associated with aberrant expression of PRTS.

US Patent:

20030186379, Oct 2, 2003

Filed:

May 9, 2003

Appl. No.:

10/311626

Inventors:

Ernestine Lee - Castro Valley CA, US
Yan Lu - Palo Alto CA, US
Preeti Lal - Santa Clara CA, US
Y Tang - San Jose CA, US
Henry Yue - Sunnyvale CA, US
Narinder Chawla - Union City CA, US
Mariah Baughn - San Leandro CA, US
Debopriya Das - Sunnyvale CA, US
Jayalaxmi Ramkumar - Fremont CA, US
Catherine Tribouley - San Francisco CA, US
Dyung Aina Lu - San Jose CA, US
April Hafalia - Santa Clara CA, US
Ameena Gandhi - San Francisco CA, US
Yuming Xu - Mountain View CA, US
Olga Bandman - Mountain View CA, US
Vicki Elliott - San Jose CA, US
Daniel Nguyen - San Jose CA, US
John Burill - Redwood City CA, US
Gregory Marcus - San Carlos CA, US
Kurt Zingler - San Francisco CA, US
Monique Yao - Carmel IN, US
Rajagopal Gururajan - San Jose CA, US
Li Ding - Creve Couer MO, US
Bridget Warren - Los Altos CA, US
Kavitha Thangavelu - Mountain View CA, US
Sally Lee - San Francisco CA, US

International Classification:

C07K014/435
C12P021/02
C12N005/06
C07H021/04

US Classification:

435/069100, 435/320100, 435/325000, 530/350000, 536/023500

Abstract:

The invention provides human secretion and trafficking molecules (SAT) and polynucleotides which identify and encode SAT. The invetion also provides expression vectors, host cells, antibodies, agonists and antagonists. The invention also provides methods for diagnosing, treating, or preventing disorders associated with aberrant expression of SAT.

US Patent:

20040053824, Mar 18, 2004

Filed:

Dec 18, 2002

Appl. No.:

10/312352

Inventors:

Y Tang - San Jose CA, US
Henry Yue - Sunnyvale CA, US
Yalda Azimzai - Oakland CA, US
Ann He - San Jose CA, US
Terence Lo - Foster City CA, US
Daniel Nguyen - San Jose CA, US
John Burrill - Redwood City CA, US
Gregory Marcus - San Carlos CA, US
Kurt Zingler - San Francisco CA, US
Ameena Gandhi - San Francisco CA, US
Liam Kearney - San Francisco CA, US
Neil Burford - Durham CT, US
Monique Yao - Carmel IN, US
Narinder Chawla - Union City CA, US
Vicki Elliott - San Jose CA, US
Chandra Arvizu - San Jose CA, US
Mariah Baughn - San Leandro CA, US
April Hafalia - Santa Clara CA, US
Jennifer Policky - San Jose CA, US
Janice Au-Young - Brisbane CA, US
Yan Lu - Mountain View CA, US
Mark Borowsky - Redwood City CA, US
Dyung Lu - San Jose CA, US
Jayalaxmi Ramkumar - Fremont CA, US
Junming Yang - San Jose CA, US
Rajagopal Gururajan - San Jose CA, US
Bridget Warren - Encinitas CA, US
Kimberly Gietzen - San Jose CA, US
Yuming Xu - Mountain View CA, US
Deborah Kallick - Portola Valley CA, US
Ernestine Lee - Castro Valley CA, US
Kavitha Thangavelu - Sunnyvale CA, US
Angelo Delegeane - Milpitas CA, US
Sally Lee - San Jose CA, US
Sajeev Batra - Oakland CA, US
Preetr Lal - Santa Clara CA, US
Farrah Khan - Des Plaines IL, US

International Classification:

C07K014/705
C12Q001/68
C07H021/04
C12P021/02
C12N005/06
A61K038/17

US Classification:

514/012000, 435/006000, 435/069100, 435/320100, 435/325000, 530/350000, 536/023500, 530/388220

Abstract:

The invention provides human extracellular matrix and cell adhesion molecules (ECMCAD) and polynucleotides which identity and encode ECMCAD. The invention also provides expression vectors, host cells, antibodies, agonists, and antagonists. The invention also provides methods for diagnosing, treating, or preventing disorders associated with aberrant expression of ECMCAD.