Patrick C Lee

US Patent:

7539924, May 26, 2009

Filed:

Nov 15, 2005

Appl. No.:

11/280017

Inventors:

Steven R. Vasquez - Rancho Santa Margarita CA, US
Patrick J. Lee - Foothill Ranch CA, US

Assignee:

Western Digital Technologies, Inc. - Lake Forest CA

International Classification:

G11C 29/00

US Classification:

714770

Abstract:

A disk drive is disclosed including a disk having a plurality of data tracks, wherein each data track includes a plurality of data sectors. A head is actuated over the disk for accessing the data sectors. A write command is received from a host, wherein the write command includes a host block and corresponding host block address. The host block is partitioned into a plurality of sub blocks, and a plurality of sub block addresses are generated in response to the host block address, wherein each sub block address corresponds to one of the sub blocks. Error detection code (EDC) data is generated for each sub block in response to the sub block and corresponding sub block address. Each sub block and corresponding EDC data are combined to generate a plurality of partial codewords that are written to the data sectors corresponding to the sub block addresses.

US Patent:

7832861, Nov 16, 2010

Filed:

Dec 28, 2009

Appl. No.:

12/647720

Inventors:

Patrick Lee - Los Alamitos CA, US

International Classification:

G02C 7/06

US Classification:

351169, 351177

Abstract:

A method of making a reverse progressive lens has the steps of selecting a standard progressive lens having a distance zone, a transition zone and a near zone; selecting an add determination that is double or more than double in power; reversing the regular progressive lens by orienting it upside down; and cutting away the near zone so that the transition zone becomes the new near zone. To maintain convergence of the corridor channel, one by orders the OS lens with the OD power and the OD lens with the OS power. The method also includes measuring a distance PD, measuring the segment height and keeping the same cylinder axis such that rotating the lens 180 does not change the axis position. Selecting a standard progressive lens may include one with a distance zone, a corridor/transition zone and a near zone.

US Patent:

8413010, Apr 2, 2013

Filed:

Mar 12, 2009

Appl. No.:

12/403257

Inventors:

Steven R. Vasquez - Rancho Santa Margarita CA, US
Patrick J. Lee - San Jose CA, US

Assignee:

Western Digital Technologies, Inc. - Lake Forest CA

International Classification:

H03M 13/00
G11C 29/00

US Classification:

714758, 714764, 714795

Abstract:

A data storage device is disclosed that receives a read command from a host, wherein the read command comprises a read logical block address (LBA_R). A target data sector is read in response to the LBA_R to generate a read signal. The read signal is processed to detect user data and redundancy data using a soft-output detector that outputs quality metrics for the user data and redundancy data. A high quality metric is assigned to the LBA_R, and errors are corrected in the user data using an error correction code (ECC) decoder in response to the quality metrics output by the soft-output detector and the quality metrics assigned to the LBA_R.

US Patent:

8433977, Apr 30, 2013

Filed:

Apr 13, 2009

Appl. No.:

12/422738

Inventors:

Steven R. Vasquez - Rancho Santa Margarita CA, US
Patrick J. Lee - San Jose CA, US

Assignee:

Western Digital Technologies, Inc. - Irvine CA

International Classification:

G11C 29/00

US Classification:

714770, 711 4, 711112, 711113

Abstract:

A storage device is disclosed comprising control circuitry. A write command is received from a host, wherein the write command comprises a host block and corresponding host block address. The host block is partitioned into a plurality of sub blocks, and a plurality of sub block addresses are generated in response to the host block address, wherein each sub block address corresponds to one of the sub blocks. Error detection code (EDC) data is generated for each sub block in response to the sub block and corresponding sub block address. Each sub block and corresponding EDC data are combined to generate a plurality of partial codewords that are written to one or more data sectors corresponding to the sub block addresses.

US Patent:

8553968, Oct 8, 2013

Filed:

Feb 18, 2005

Appl. No.:

11/060901

Inventors:

Patrick J. Lee - Foothill Ranch CA, US
Mark D. Thomas - Hollister CA, US

Assignee:

Western Digital Technologies, Inc. - Irvine CA

International Classification:

G06K 9/00

US Classification:

382141, 382220, 382309

Abstract:

A serial number detector is disclosed for detecting an encoded serial number written on a wafer. A scanner scans the wafer to generate a raster image representing the encoded serial number, and an optical character recognition (OCR) system detects a detected serial number comprising a plurality of detected data characters and a plurality of detected redundancy characters. A character-to-binary converter converts the detected data characters and the detected redundancy characters into codeword symbols. A syndrome generator generates a plurality of error syndromes in response to the codeword symbols, and an error corrector, responsive to the error syndromes, detects and corrects errors in the codeword symbols.

US Patent:

20140026864, Jan 30, 2014

Filed:

Sep 26, 2013

Appl. No.:

14/038508

Inventors:

Gordon E. Rado - Concord CA, US
Michael H. Wahl - Bonita CA, US
Patrick R. Lee - San Diego CA, US
Clark A. Klyza - San Diego CA, US
Eric P. Dion - Encinitas CA, US

Assignee:

Achates Power, Inc. - San Diego CA

International Classification:

F02B 75/00

US Classification:

123 51 R

Abstract:

Integrated, multi-cylinder opposed engine constructions include a unitary support structure to which cylinder liners are removeably mounted and sealed and on which crankshafts are rotatably supported. The engine constructions include a cooled piston with a resiliently deformable joint connecting crown and skirt and a cooled cylinder liner with wipers to manage lubricant in the cylindrical interstice between the cylinder bore and the piston skirts.

US Patent:

56402864, Jun 17, 1997

Filed:

May 8, 1995

Appl. No.:

8/436521

Inventors:

Marc Acosta - San Clemente CA
Carl Bonke - Rancho Santa Margarita CA
Patrick Lee - San Jose CA
Trinh Bui - San Jose CA
Stanley Chang - Irvine CA
Joanne Wu - Diamond Bar CA

Assignee:

Western Digital Corporation - Irvine CA

International Classification:

G11B 509

US Classification:

360 48

Abstract:

An intelligent disk drive includes a controller which embeds user data address information into error correction code check symbols written to the data storage disk. The address information is not written to disk, but address errors are detected by decoding the error correction code check symbols during read operations. Disk space is saved while maintaining robust address error detection.

US Patent:

56919948, Nov 25, 1997

Filed:

May 8, 1995

Appl. No.:

8/436516

Inventors:

Marc Acosta - San Clemente CA
Carl Bonke - Rancho Santa Margarita CA
Trinh Bui - Mountain View CA
Stanley Chang - Irvine CA
Patrick Lee - San Jose CA
Phong Tran - Irvine CA
Joanne Wu - Diamond Bar CA

Assignee:

Western Digital Corporation - Irvine CA

International Classification:

G11C 2900

US Classification:

371 401

Abstract:

An intelligent disk drive employing a controller which performs high speed error correction and miscorrection detection using a finite field processor. The error correction code is defined over a finite field and the error detection code is defined over an extension field of the finite field. The finite field processor performs calculation over both the finite field and extension field to provide high speed error correction and correction validation.