Kang S Lee

6675863, Jan 13, 2004

Sep 7, 2000

09/656681

San Zhuang Wang - Torrance CA
Gajendra D. Savant - Rancho Palos Verdes CA
Ed Kaiser - Redondo Beach CA
Kang S. Lee - Woodland Hills CA

Physical Optics Corporation - Torrance CA

B22D 2300

164 46, 164 6, 264 11, 430321

Hollow, cylindrical, seamless metal master for producing seamless diffuser sheets of preselected length and width. Additional aspects of the invention include a hollow cylindrical seamless invertable elastomeric master and method of making the same and an apparatus and process for effecting variable diffuser recording in photosensitive medium.

6724553, Apr 20, 2004

Oct 22, 2001

10/037783

Jong Yun Yun - Santa Clara CA
Kang Seok Lee - San Jose CA
Sang Hoon Chu - Santa Clara CA
Gyu Tack Kim - Santa Clara CA

Samsung Electronics Co., Ltd.

G11B 509

360 51, 360 31

A method for writing and reading data in a hard disk drive and compensating for an offset between a write element and a read element of a head. The method determines an offset time by determining the difference between a desired sync byte position and an actual sync byte position located between a preamble and a data sector of the disk. The difference corresponds to the offset between the read and write elements. The offset time is subtracted from the normal time for enabling the read gate of a disk drive pre-amplifier.

6958875, Oct 25, 2005

Feb 27, 2003

10/376082

Jong Yun Yun - Cupertino CA, US
Yeong Kyun Lee - San Jose CA, US
Kang Seok Lee - San Jose CA, US
Ho In Sou - San Gabriel CA, US

Samsung Electronics Co., Ltd. - Suwon

G11B005/03

360 66, 360 67

A self-vaccine as used herein will refer to methods of operating a disk drive and the apparatus implementing such methods, which make the disk drive immune to changes in temperature, that keep the disk drive healthy when hot or cold. The invention includes a self-vaccine extending the read channel optimization parameter database of a track zone or sequence to test temperature ranges actually found in the user's operation of the disk drive. The invention also includes the self-vaccine updating the read channel optimization parameter database for an already tested temperature range, whenever there has been sufficient time passed since the read channel optimization was performed for that temperature range. The invention includes read channel optimized parameters for at least temperature ranges within the embedded disk controller, which are updated in the user's operating environment during idle time providing the self-vaccine. The invention includes disk drives including a self-vaccine method.

6982849, Jan 3, 2006

Sep 13, 2001

09/952684

Tung Nguyen - San Jose CA, US
Sang Hoon Chu - Santa Clara CA, US
Jun Seok Shim - Cupertino CA, US
Kang Seok Lee - Cupertino CA, US
Soo Il Choi - Santa Clara CA, US
Seong Hwan Yu - San Jose CA, US

Samsung Electronics Co., Ltd. - Suwon

G11B 5/596

360 7708

The present invention is a method and apparatus for positioning a read/write head in a hard disk drive. The method comprises providing a disk having a at least one side with a plurality of tracks, where each of the tracks has a servo field with servo bits. The servo bits are read to provide a position signal for positioning a read/write head. The method determines a difference in position between an initial and a subsequent position of the read/write head on a track, where the subsequent location occurs after the read/write head has moved one revolution from the initial position on the track. The initial and subsequent positions are offset laterally. The method generates a compensation signal based on the initial position, the subsequent position and the difference. The position signal and the compensation signal are combined to provide a compensated position signal for positioning the read/write head. Various embodiments are described.

7158337, Jan 2, 2007

Oct 7, 2005

11/245644

Tung Nguyen - San Jose CA, US
Sang Hoon Chu - Santa Clara CA, US
Jun Seok Shim - Cupertino CA, US
Kang Seok Lee - Cupertino CA, US
Soo Il Choi - Santa Clara CA, US
Seong Hwan Yu - San Jose CA, US

Samsung Electronics Co., Ltd. - Suwon

G11B 5/596

360 7708

The present invention is a method and apparatus for positioning a read/write head in a hard disk drive. The method comprises providing a disk having a at least one side with a plurality of tracks, where each of the tracks has a servo field with servo bits. The servo bits are read to provide a position signal for positioning a read/write head. The method determines a difference in position between an initial and a subsequent position of the read/write head on a track, where the subsequent location occurs after the read/write head has moved one revolution from the initial position on the track. The initial and subsequent positions are offset laterally. The method generates a compensation signal based on the initial position, the subsequent position and the difference. The position signal and the compensation signal are combined to provide a compensated position signal for positioning the read/write head. Various embodiments are described.

7231017, Jun 12, 2007

Jul 27, 2005

11/191095

Michael Gertsenshteyn - Torrance CA, US
Thomas Forrester - Westminster CA, US
Tomasz Jannson - Torrance CA, US
Kang Lee - Woodland Hills CA, US
Gajendra Savant - Rolling Hills Estates CA, US

Physical Optics Corporation - Torrance CA

G01N 23/203
G21K 1/06

378 87, 378 84, 378 86, 378149, 2505051

A Lobster Eye X-ray Imaging System based on a unique Lobster Eye (LE) structure, X-ray generator, scintillator-based detector and cooled CCD (or Intensified CCD) for real-time, safe, staring Compton backscatter X-ray detection of objects hidden under ground, in containers, behind walls, bulkheads etc. In contrast to existing scanning pencil beam systems, Lobster Eye X-Ray Imaging System's true focusing X-ray optics simultaneously acquire ballistic Compton backscattering photons (CBPs) from an entire scene irradiated by a wide-open cone beam from one or more X-ray generators. The Lobster Eye X-ray Imaging System collects (focuses) thousands of times more backscattered hard X-rays in the range from 40 to 120 keV (or wavelength λ=0. 31 to 0. 1 Å) than current backscatter imaging sensors (BISs), giving high sensitivity and signal-to-noise ratio (SNR) and penetration through ground, metal walls etc. The collection efficiency of Lobster Eye X-ray Imaging System is optimized to reduce emitted X-ray power and miniaturize the device.

7297002, Nov 20, 2007

Nov 21, 2005

11/285592

Andrew Kostrzewski - Garden Grove CA, US
Kang Lee - Woodland Hills CA, US
Tomasz Jannson - Torrance CA, US
Gajendra Savant - Rolling Hills Estates CA, US

Physical Optics Corporation - Torrance CA

H01R 33/00

439 37, 439165

An improved stacked rotary connector assembly wherein each connector comprises a pair of rings and the rings of each rotary connector thereof are individually split and mechanically separable. Because the input and output rings are each split and separable, any one rotary connector may be removed from the stack without requiring removal of any other rotary connector and without disturbing the input/output buses of the assembly.

7335067, Feb 26, 2008

Jul 27, 2005

11/191094

Kang Lee - Woodland Hills CA, US
Thomas Forrester - Westminster CA, US
Tomasz Jannson - Torrance CA, US
Andrew Kostrzewski - Garden Grove CA, US
Gajendra Savant - Rolling Hills Estates CA, US

Physical Optics Corporation - Torrance CA

H01R 13/24

439700, 439824, 439289

Two embodiments of a connector that can be mated without regard for its orientation are disclosed. One embodiment is mated and demated autonomously as part of a system for recovering, docking with, recharging and re-launching unmanned aerial vehicles. Another embodiment is employed on the decks of vessels to facilitate mating and demating of various equipment providing different functions to reconfigure the vessel. Because both embodiments are configured for connection irrespective of angular orientation over 360, they are especially suited for harsh environments including autonomous operation, rough seas, darkness and the like.