Qing Lin He, 624637 Aviara Ct, San Jose, CA 95135

6430695, Aug 6, 2002

Apr 13, 1999

09/289951

Michael Richard Bray - San Jose CA
Qing He - San Jose CA

Advanced Micro Devices, Inc. - Sunnyvale CA

G06F 104

713501, 375219, 375211

A novel system for selectively referencing transmit data transferred from a repeater to a physical layer transmitter via a Media Independent Interface (MII), to an input clock selected depending on a mode of MII operations. A clock select input determines whether transmit data is referenced to a selected input clock or to a MII transmit clock output. An analog phase-locked loop (APLL) is supplied with the selected input clock to produce a signal for driving a wave shaper that converts the MII transmit data into a required format for 10 Mb/s operations.

6522114, Feb 18, 2003

Dec 10, 2001

10/013161

Anton Bakker - Delft, NL
Qing He - Gilbert AZ

Koninklijke Philips Electronics N.V. - Eindhoven

G05F 140

323282

The present invention relates to a low dropout voltage regulator comprising a noise reduction architecture. The low dropout voltage regulator according to the invention comprises a comparison stage for comparing a reference voltage signal with a feedback signal and for providing a first output voltage signal in dependence thereupon. The feedback signal is obtained from a node interposed between a first resistor and a second resistor of a voltage divider. The voltage divider is interposed between an input port for receiving an input voltage signal and ground and is connected to an output terminal of the comparison stage. The first output voltage signal is then low pass filtered prior provision to a gain stage. The gain stage provides gain to the first output voltage signal prior provision to an output port. The noise reduction architecture of the low dropout voltage regulator according to the invention is highly advantageous by providing high efficiency while high frequency noise is substantially reduced.

6650520, Nov 18, 2003

Oct 26, 2001

10/014722

Qing He - Gilbert AZ

Koninklijke Philips Electronics N.V. - Eindhoven

H02H 342

361 84, 361 82, 361115, 307127

All integrated circuits (ICs) require a power supply having a potential difference for use in powering internal integrated circuit components to ensure their operation. In some cases it is possible to inadvertently reverse the bias of the applied potential difference, resulting in damage to the IC. For propagating large currents big pass transistors are used within the circuit. Reverse bias protection for these ICs is achieved by utilizing either a protection transistor in parallel with the big pass transistor, or a diode within the big pass transistor for protecting both analog and digital ICs.

6657836, Dec 2, 2003

Dec 18, 2001

10/022990

Qing He - Gilbert AZ
DC Sessions - Phoenix AZ

Koninklijke Philips Electronics N.V. - Eindhoven

H02H 900

361 56, 361 82, 361 84, 361111, 307127

An ESD protection circuit is provided which offers full protection for sub micron CMOS technology integrated circuits that does not have a latchup problem as in silicon controller rectifier circuits. The primary ESD protection transistor within the circuit channeling deleterious ESD currents away from the electrical circuit using snapback conduction while additionally enabling bipolar operation of the electrical circuit.

6798616, Sep 28, 2004

Jul 10, 2001

09/902873

David J. Seagle - Morgan Hill CA
Qing He - Fremont CA
Lien-Chang Wang - Fremont CA
Ming Zhao - Fremont CA

Western Digital (Fremont), Inc. - Fremont CA

G11B 539

360126

A disk drive write head having in consecutive layers a bottom pole, a write gap layer, a first insulation layer, a coil, a second insulation layer having an insulation layer boundary, and a top pole on the second insulation layer. The top pole includes a main body portion and a nose portion and has a flare line at the location where the nose portion expands to become the main body portion. The top pole further includes a curved contour portion having a contour boundary, a tip which terminates in an air bearing surface, and a flat portion on the top surface of the nose extending between the tip and the contour boundary. The insulation layer boundary is recessed from the air bearing surface such that the top pole contour boundary lies substantially close to the flare line, thus producing a top pole top surface which is substantially flat.

6870712, Mar 22, 2005

Jun 5, 2001

09/875601

Yingjian Chen - Fremont CA, US
James Wang - Milpitas CA, US
Qing He - Fremont CA, US
David J. Seagle - Morgan Hill CA, US

Western Digital (Fremont), Inc. - Lake Forest CA

G11B005/147

360317

A disk drive write head () having a bottom pole (), a first insulation layer () formed on the bottom pole (), a coil () formed on the first insulation layer (), a second insulation layer () formed on the coil (), a write gap layer () formed on the second insulation layer (), and a top pole () formed on the write gap layer (), where the top pole () is substantially flat. A second embodiment () is described which is produced by a damascene process.

6912106, Jun 28, 2005

Aug 6, 2002

10/213532

Yingjian Chen - Fremont CA, US
Qing He - Fremont CA, US
Yugang Wang - Milpitas CA, US
Kroum Stoev - Fremont CA, US
Francis Liu - Fremont CA, US
Xiaozhong Dang - Fremont CA, US

Western Digital (Fremont), Inc. - Lake Forest CA

G11B005/147

360126

A method and system for providing a recording head is disclosed. The method and system include providing a first pole, a second pole, a write gap and at least one coil. The write cap separates the first pole from the second pole. The coil(s) include a plurality of turns and is between the first and second poles. The first pole includes a pedestal that has a first portion and a second portion. The first portion includes a high moment electroplated material. The second portion includes a hot seed layer that has a high moment sputtered material. The second portion of the first pole is adjacent to the write gap.

7116517, Oct 3, 2006

Dec 18, 2002

10/323128

Qing He - Fremont CA, US
Hirohiko Kamimura - Cupertino CA, US
Shuhei Otani - Fremont CA, US
Yugang Wang - Milpitas CA, US
David J. Seagle - Morgan Hill CA, US

Western Digital (Fremont), Inc. - Fremont CA

G11B 5/147

360126

A T-shaped pole tip portion of an upper pole of a write element for a magnetic disk drive is provided. One end of the pole tip portion, constituting the bottom of the “T,” forms a narrow nose segment at an air bearing surface, while a wing segment at the opposite end of the pole tip portion constitutes the cross-bar top of the “T. ” A transition segment extends between the nose segment and the wing segment. A yoke portion of the upper pole includes a surface that is parallel to the air bearing surface and recessed therefrom by a PR depth. The transition segment does not widen significantly until after the PR depth, accordingly, the wing segment is recessed from the air bearing surface by more than the PR depth.