Michael Choonho Chang

US Patent:

8576506, Nov 5, 2013

Filed:

Jun 21, 2012

Appl. No.:

13/529817

Inventors:

Honge Wang - Irvine CA, US
Michael Chang - San Jose CA, US
Abhishek Dhanda - San Jose CA, US
Huanxiang Ruan - Irvine CA, US
Guoxiao Guo - Irvine CA, US

Assignee:

Western Digital Technologies, Inc. - Irvine CA

International Classification:

G11B 5/09

US Classification:

360 50, 360 51, 360 39, 360 7708

Abstract:

A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of servo sectors defining a plurality of servo tracks. The servo tracks form a plurality of servo zones. A disk locked clock is synchronized relative to a servo data rate of the servo zone the head is over. A first reader/writer gap is measured in cycles of the disk locked clock at a first servo track in the first servo zone. A second reader/writer gap is measured in cycles of the disk locked clock at a second servo track in the second servo zone. The first and second reader/writer gaps are normalized to generate a normalized first and second reader/writer gaps. A third reader/writer gap is estimated in cycles of the disk locked clock at a third servo track in the second servo zone based on the normalized first and second reader/writer gaps.

US Patent:

20040043682, Mar 4, 2004

Filed:

Sep 4, 2002

Appl. No.:

10/236053

Inventors:

Steven Taylor - Glendora CA, US
Mark Longfellow - Foothill Ranch CA, US
Norman Tracy - Huntington Beach CA, US
Robert Henderson - Tustin CA, US
Michael Chang - Irvine CA, US
Roland Weber - Rancho Palos Verdes CA, US

International Classification:

B32B027/12
B32B013/02
B32B013/14
B32B005/02
B32B027/04

US Classification:

442/042000, 442/043000, 442/045000, 442/049000

Abstract:

A composite board for use as backerboard for tile, the board including a mesh layer with a mesh fabric, a mat layer with a mat fabric and a polystyrene layer disposed between the two portions where a non-shrinking cement compound saturates and connects the two outer portions with the polystyrene substrate. The composite board's mesh layer incorporates a stretchable mesh which in conjunction with the polystyrene substrate and the non-shrinking cement compound supports standard fasteners used in the home-building industry along with providing a suitable tile adhesion surface. The mat layer incorporates a fiberglass mat which provides high rigidity as well as being suitable for contact with an inner wall or studs. The combination of materials provides a backerboard that is light weight, rigid, economical and easy to build with.

US Patent:

20060183387, Aug 17, 2006

Filed:

Dec 14, 2005

Appl. No.:

11/304987

Inventors:

Steven Taylor - Glendora CA, US
Mark Longfellow - Foothill Ranch CA, US
Norman Tracy - Huntington Beach CA, US
Robert Henderson - Tustin CA, US
Michael Chang - Irvine CA, US
Roland Weber - Rancho Palos Verdes CA, US

International Classification:

B32B 5/24

US Classification:

442030000, 442035000, 442042000, 442043000, 442045000, 442046000, 442048000, 442049000, 442164000, 442180000, 428304400, 428318400, 442370000, 442221000

Abstract:

A composite board for use as backerboard for tile includes outer reinforcement portions and a polystyrene layer disposed between the two outer reinforcement portions, at least one of the outer reinforcement portions being an outer mat fabric reinforcement layer with a mat fabric, and a non-shrinking cement compound saturating and connecting the two outer portions with the polystyrene substrate. A method of installing a composite tile backerboard involves placing the composite board against a fixture protruding from a flat surface, pressing the composite board against the fixture to emboss the features of the fixture on the surface of the composite board, and cutting a hole in the composite board based upon the features of the fixture embossed on the composite board.

US Patent:

20070052886, Mar 8, 2007

Filed:

Mar 23, 2006

Appl. No.:

11/388222

Inventors:

Bunsen Fan - Cortlandt Manor NY, US
Michael Chang - Los Angeles CA, US

International Classification:

G02F 1/1335

US Classification:

349098000

Abstract:

Provided herein is an ophthalmic lens and methods for making an ophthalmic lens. The ophthalmic lens includes a body having one or more films having at least one spectral reflection band. The reflection band includes spectral reflection properties to reflect right handed circularly polarized light, left handed circularly polarized light, or a combination of right handed circularly polarized light and left handed circularly polarized light.

US Patent:

20120039513, Feb 16, 2012

Filed:

Aug 11, 2010

Appl. No.:

12/854317

Inventors:

Sean Patrick Kennedy - San Diego CA, US
Frederik Carpio - San Diego CA, US
Michael Chang - San Diego CA, US
Rommel Garay - San Marcos CA, US
Paul Jin Hwang - Solana Beach CA, US
Andrew Lee Lawton - San Marcos CA, US
Gary Robert Lyons - San Diego CA, US
Edward Theodore Winter - San Diego CA, US

International Classification:

G06K 9/00
G06F 17/30
G06F 3/01

US Classification:

382118, 715752, 707769, 707E17014

Abstract:

Social media account UIs are disclosed to allow users to easily manage all social media accounts. Photos are automatically shared based on image recognition with social networking contacts appearing in the photos. Movies are automatically created from related social media clips, and videos can be generated by a user and uploaded to the user's social media accounts with a single click.

US Patent:

20120042035, Feb 16, 2012

Filed:

Aug 10, 2010

Appl. No.:

12/853678

Inventors:

Sean Patrick Kennedy - San Diego CA, US
Fredrik Carpio - San Diego CA, US
Paul Jin Hwang - Solana Beach CA, US
Gary Robert Lyons - San Diego CA, US
Edward Theodore Winter - San Diego CA, US
Michael Chang - San Diego CA, US
Andrew Lee Lawton - San Marcos CA, US

International Classification:

G06F 15/16
G06F 15/173
G06F 3/048

US Classification:

709217, 715780, 709224

Abstract:

A computer establishes a wireless wide area network (WWAN) account simply by entering his telephone number in a user interface (UI) which is sent to an Internet server and correlated with the user's telephone account. A utility notes when a usage limitation for a period is approaching and in response disables wireless updates and automatically executes the updates when a landline connection is sensed.

US Patent:

20120072752, Mar 22, 2012

Filed:

Sep 22, 2010

Appl. No.:

12/888025

Inventors:

Sean Kennedy - San Diego CA, US
Edward Winter - San Diego CA, US
Gary Lyons - San Diego CA, US
Paul Hwang - Solana Beach CA, US
Rommel Garay - San Marcos CA, US
Christopher Ohren - San Diego CA, US
Fredrik Carpio - San Diego CA, US
Michael Chang - San Diego CA, US
Drew Lawton - San Marcos CA, US

Assignee:

SONY CORPORATION - Tokyo

International Classification:

G06F 1/32
G06F 1/26
G06F 1/00

US Classification:

713323, 713324, 713300, 713340, 713320

Abstract:

A method and apparatus for providing power management enhancements. In an embodiment, the method comprises receiving an indication that the computing device is in a non-user-interactable state and powering down non-essential device components such that the computing device is configured to enter a low power state. In another embodiment, the method comprises selecting a duration for a battery life of the computing device and selecting a power profile for the computing device to ensure that the computing device operates for at least as long as the selected duration. In an embodiment, the apparatus comprises a computing device comprising means for providing battery power and means for altering a power profile of the computing device.

US Patent:

20120081286, Apr 5, 2012

Filed:

Oct 5, 2010

Appl. No.:

12/898161

Inventors:

Sean Patrick Kennedy - San Diego CA, US
Fredrik Carpio - San Diego CA, US
Rommel Garay - San Marcos CA, US
Paul Jin Hwang - Solana Beach CA, US
Gary Robert Lyons - San Diego CA, US
Edward Theodore Winter - San Diego CA, US
Christopher Mark Ohren - San Diego CA, US
Michael Chang - San Diego CA, US
Andrew Lee Lawton - San Marcos CA, US
Scott Avery Patton - Escondido CA, US

International Classification:

G06F 3/02

US Classification:

345168

Abstract:

Keypad keys having functions when they are pressed simultaneously with a meta key are backlit or bear indicia indicating the functions. A user interface (UI) can be presented indicating the functions of the keys. A row of special purpose keys user-programmable can be provided with each key invoking a respective application of service.