DR. DAVID R CHEN, DDS, MS
Dentist at Stockton Blvd, Sacramento, CA

2003006, Mar 27, 2003

Sep 27, 2001

09/965956

Kechen Cheng - Palo Alto CA, US
David Chen - San Jose CA, US

G06F015/00

702/150000

A method and system for searching in a track in an optical storage system is disclosed. The optical storage system includes an optical pick up unit (OPU) coupled to a carriage. The method and system comprises receiving a command to indicate that the OPU is to move to a target position of the track. The method and system includes providing first and second output signals, each of the output signals having a rising edge and a falling edge. The rising and falling edges indicate movement of the carriage. The method and system further includes counting each of the rising edges and the falling edges of each of the first and second output signals and providing a sensor count for each of the rising and falling edges; a plurality of sensor counts are provided by movement of the carriage. The method and system finally includes utilizing the plurality of sensor counts to determine the distance the carriage has moved and moving the OPU to the target position based upon the plurality of sensor counts. The spindle speed at each sledge count location can be pre-calculated and stored in the look-up table, and the CLV spindle speed at target radius can be adjusted on the fly and hence reduce the seek time. By using the sledge sensor counts, the surface of the optical disk can be divided into several zones. The spindle speed can be defined and read from a look-up table for zone CAV control scheme. By dividing the disk surfaces into several zones, whenever any seek error happens during the seek operation the system processor can issue the command to re-seek to the target location rapidly without doing the recal procedure.

2013021, Aug 22, 2013

Mar 29, 2013

13/853326

David Chen - San Jose CA, US
Lin Huang - Fremont CA, US
Guansong Zhang - Mountain View CA, US

Fortinet, Inc. - Sunnyvale CA

H04L 12/70

370412, 370474

Methods and systems for a more efficient transmission of network traffic are provided. According to one embodiment, a user process of a host processor requests a network driver to store payload data within a system memory. The network driver stores (i) payload buffers each containing therein at least a subset of the payload data and (ii) buffer descriptors each containing therein information indicative of a starting address of a corresponding payload buffer within a user memory space. A network processor transmits onto a network the payload data within multiple transport layer protocol packets by (i) causing a network interface to retrieve the payload data from the payload buffers by performing direct virtual memory addressing of the user memory space using the buffer descriptors and information contained within a translation data structure stored within the system memory; and (ii) segmenting the payload data across the transport layer protocol packets.

7528944, May 5, 2009

May 22, 2007

11/751970

David Chen - San Jose CA, US
Andrew Steinbach - Menlo Park CA, US
Daniel Kavaldjiev - Milpitas CA, US
Alexander Belyaev - Mountain View CA, US
Juergen Reich - Campbell CA, US

KLA-Tencor Technologies Corporation - Milpitas CA

G01N 21/00

3562376, 3562371, 3562372

Methods and systems for detecting pinholes in a film formed on a wafer or for monitoring a thermal process tool are provided. One method for detecting pinholes in a film formed on a wafer includes generating output responsive to light from the wafer using an inspection system. The output includes first output corresponding to defects on the wafer and second output that does not correspond to the defects. This method also includes detecting the pinholes in the film formed on the wafer using the second output. One method for monitoring a thermal process tool includes generating output responsive to light from a wafer using an inspection system. The output includes the first and second output described above. The wafer was processed by the thermal process tool prior to generating the output. The method also includes monitoring the thermal process tool using the second output.

5957764, Sep 28, 1999

Nov 5, 1997

8/964930

H. Alexander Anderson - Santa Cruz CA
Linh X. Can - San Jose CA
Tsungnan Cheng - Saratoga CA
Garry K. Kwong - San Jose CA
Albert Hu - San Jose CA
David Chen - San Jose CA

Aplex, Inc. - Sunnyvale CA

B24B 500, B24B 2900

451285

A wafer polishing apparatus includes a module frame; a continuous belt rotatable with respect to the frame, the belt having at least one vertically-oriented belt transverse portion including a polishing pad assembly; and at least one pivotable wafer-holding head drive within the frame and having a distal end portion movable to a vertical first position parallel and juxtaposed to the belt transverse portion. The head drive includes a wafer carrier for holding a wafer on the distal end portion of the head drive, while a drive moves the distal end portion and a held wafer into a vertical polishing position abutting the belt transverse portion and pressure is applied to the held-wafer against the polishing pad assembly while the wafer-holding distal end portion is rotated and swept side-by-side. After polishing the drive is reversed and the head drive is pivoted away from the belt transverse portion to a horizontal or other orientation and the then polished wafer removed. Multiple modules may be placed end-to-end or side-by-side with a robot pathway therebetween to load unpolished wafers and to unload polished wafers to a buffing station, to a cassette or other processing station.

2012021, Aug 16, 2012

May 17, 2011

13/109989

Xiaohuan C. Wang - Sunnyvale CA, US
Giovanni Agnoli - San Mateo CA, US
David N. Chen - San Jose CA, US
Vijay Sundaram - San Ramon CA, US
Brian Meaney - San Jose CA, US
Mike Stern - San Francisco CA, US
Paul T. Schneider - Chicago IL, US
Eric J. Graves - Radnor PA, US
Randy Ubillos - Los Altos CA, US

G06F 3/00

715723

A novel method for retiming a portion of a media content (e.g., audio data, video data, audio and video data, etc.) in a media-editing application is provided. The media editing application includes a user interface for defining a range in order to select a portion of the media content. The media editing application performs retiming by applying a speed effect to the portion of the media content selected by the defined range. For a faster speed effect, the media editing application retimes the selected portion of the media content by sampling the media content at a faster rate. For a slower speed effect, the media editing application retimes the selected portion of the media content by sampling the content at a slower rate.

7944946, May 17, 2011

Oct 21, 2008

12/254931

Xu Zhou - Milpitas CA, US
David Chen - San Jose CA, US
Lin Huang - Fremont CA, US
Guansong Zhang - Mountain View CA, US

Fortinet, Inc. - Sunnyvale CA

H04L 12/56

370474

Methods and systems for a more efficient transmission of network traffic are provided. According to one embodiment, a method is provided for performing segmentation offloading, such as TCP segmentation offloading (TSO). An interface performs direct virtual memory addressing of a user memory space of a system memory on behalf of a network processor to fetch payload data originated by a user process running on a host processor. Then, the network processor segments the payload data across one or more packets.