Yi I Zhang

US Patent:

6397345, May 28, 2002

Filed:

Oct 9, 1998

Appl. No.:

09/169361

Inventors:

Paul Edmonds - Palo Alto CA
Yi Zhang - Sunnyvale CA
Chang Xu - San Jose CA
Priyen Doshi - San Jose CA
Stephen Co - San Ramon CA
Michael P. Tel - Sunnyvale CA
Andy Chan - Milpitas CA

Assignee:

Openwave Systems Inc. - Redwood City CA

International Classification:

H02H 305

US Classification:

714 4, 714 11

Abstract:

A computer system includes a plurality of interdependent processors. Each interdependent processor executes an independent operating system image without sharing file system state information, and each interdependent processor further has a network access card with a first network connection and a second network connection. The computer system has a first active backplane coupled to each first network connection of each processor; a second active backplane coupled to each second network connection of each processor, the second active backplane operating in lieu of the first active backplane in case of a fail-over; and one or more peripherals connected to each of the first and second active backplanes and responsive to data requests transmitted over the first and second active backplanes.

US Patent:

6412079, Jun 25, 2002

Filed:

Oct 9, 1998

Appl. No.:

09/169838

Inventors:

Paul Edmonds - Palo Alto CA
Yi Zhang - Sunnyvale CA
Chang Xu - San Jose CA
Priyen Doshi - San Jose CA
Stephen Co - San Ramon CA
Michael P. Tel - Sunnyvale CA
Andy Chan - Milpitas CA

Assignee:

Openwave Systems Inc. - Redwood City CA

International Classification:

H02H 305

US Classification:

714 11, 714 13

Abstract:

A computer system includes a plurality of interdependent processors for operating a common set of applications. Each interdependent processor executes an independent operating system image without sharing file system state information. Each interdependent processor has a network access card with a first network connection and a second network connection. The computer system includes a first active backplane coupled to each first network connection of each processor; a second active backplane coupled to each second network connection of each processor, the second active backplane operating in lieu of the first active backplane in case of a fail-over; and one or more directors coupled to the first and second active backplanes, each of the one or more directors load-balancing requests directed at a plurality of servers.

US Patent:

6649780, Nov 18, 2003

Filed:

Dec 17, 1999

Appl. No.:

09/465562

Inventors:

Hansjörg Eibl - Bovenden, DE
Jinkang Wang - San Francisco CA
Yi Lin Zhang - Woodside CA

Assignee:

Valentis, Inc. - Burlingame CA
Max-Planck-Gesellschaft zur Foerderung der Wissaschaften B.V. - Berlin

International Classification:

C04C 1403

US Classification:

554110, 554103, 554108, 554109, 564483, 564503, 564506, 564508, 568589

Abstract:

Cationic lipids are provided which are useful in the preparation of liposomes and other lipid vesicle carriers. The lipids of the invention are particularly useful as carriers of nucleic acids and other negatively charged substances, for delivery to cells.

US Patent:

6928078, Aug 9, 2005

Filed:

Dec 14, 2000

Appl. No.:

09/738629

Inventors:

Hakim Mesiwala - Cupertino CA, US
Yi Zhang - San Jose CA, US

Assignee:

Altigen Communications, Inc. - Fremont CA

International Classification:

H04L012/56

US Classification:

370394, 370389, 370352

Abstract:

A method for operating a telecommunications server includes receiving a plurality of data packets, each data packet including an associated chronological time stamp, storing the plurality of data packets in a first buffer, determining a first data packet from the plurality of data packets indicating a lead data packet, the first data packet stored in a first location in the first buffer, determining a timing offset in response to a chronological time stamp associated with the first data packet and a pre-determined session time stamp, storing a portion of the first data packet at a first location in a second buffer, the first location associated with the pre-determined session time stamp, retrieving a second data packet from the plurality of data packets in a second location in the first buffer, determining a session time stamp associated with the second data packet in response to a chronological time stamp associated with the second data packet and to the timing offset, storing a portion of the second data packet at a second location in the second buffer, the second location associated with the session time stamp associated with the second data packet, and retrieving the portion of the first data packet from the second buffer.

US Patent:

6956848, Oct 18, 2005

Filed:

Jun 13, 2000

Appl. No.:

09/593821

Inventors:

Donggun Keung - Milpitas CA, US
Yi Zhang - San Jose CA, US
Shirley Sun - Saratoga CA, US
Gilbert Hu - Fremont CA, US

Assignee:

AltiGen Communications, Inc. - Fremont CA

International Classification:

H04L012/66

US Classification:

370356, 370352, 370354

Abstract:

According to an embodiment of the present invention, a method for operating a telecommunications system includes a telephone call from an external telephone line, determining a computer network address and switching data in response to the telephone call, coupling the telecommunications system with a remote telecommunications system at the computer network address, transmitting switching data from the telecommunications system to the remote telecommunications system via the Internet, coupling the telephone call to an auto attendant at the remote telecommunications system in response to the switching data.

US Patent:

7286990, Oct 23, 2007

Filed:

Jan 21, 2000

Appl. No.:

09/889911

Inventors:

Paul Edmonds - Palo Alto CA, US
Yi Zhang - Sunnyvale CA, US
George Sollman - Atherton CA, US
Michael P. Tel - Sebastopol CA, US
Chang Xu - Mountain View CA, US
Priyen Doshi - San Jose CA, US
Stephen Co - Foster City CA, US
David Weinstein - Palo Alto CA, US
Andy Chan - San Mateo CA, US

Assignee:

Openwave Systems Inc. - Redwood City CA

International Classification:

G10L 21/06

US Classification:

704275

Abstract:

An interface for accessing data from one or more information systems using a wireless telephone or other user device. The interface is presented to a user as an abstraction of a unified mailbox and permits access by the user to messaging and other services from the wireless device. The interface is coupled to one or more converting modules to convert user inputs from the format in which they are received into a format that may be input to the desired information system.

US Patent:

7889609, Feb 15, 2011

Filed:

Mar 3, 2008

Appl. No.:

12/074485

Inventors:

Eric Li - Milpitas CA, US
Yi Zhang - Mountain View CA, US

Assignee:

Silicon Core Technology, Inc. - Milpitas CA

International Classification:

G11B 7/004

US Classification:

369 4751, 369 5911

Abstract:

A writing current circuit () supplies a controlled electrical current to a laser diode () for recording data swiftly onto a DVD (). A plurality of current sources () in the writing current circuit () supply electrical current directly to the laser diode (). Each current source () respectively receives a single output signal from a current control register () included in the writing current circuit () which activates or deactivates the current source () for supplying a particular quantity of current to the laser diode (). In one aspect, a pair of current reference signals received by the current source () control electrical current supply to the diode (). Incorporated into these controlling reference signals is a simulation of electrical characteristics of the diode (). In another aspect, each current source () responds to a logical inverse of the output signal from the current control register () for controlling overshoot in voltage applied across the diode ().

US Patent:

7916613, Mar 29, 2011

Filed:

Jan 7, 2008

Appl. No.:

12/448761

Inventors:

Eric Li - Milpitas CA, US
Yi Zhang - Mountain View CA, US

Assignee:

Silicon Core Technology, Inc. - Milpitas CA

International Classification:

G11B 7/00

US Classification:

369116, 369 475, 36912401

Abstract:

A writing current circuit () supplies a controlled electrical current to a laser diode () for recording data swiftly onto a DVD (). A plurality of current sources () in the writing current circuit () supply electrical current to the laser diode (). Each current source () respectively receives a single output signal from a current control register () included in the writing current circuit () which activates or deactivates the current source () for supplying a particular quantity of electrical current to the laser diode (). In each current source (), electrical current flows to the laser diode () through a MOSFET output transistor () connected in series with the laser diode (). Each current source's MOSFET output transistor () has a gate insulating layer which is thinner than the gate insulating layer conventionally used for a MOSFET output transistor () that is energized by the electrical potential the it applied to the writing current circuit ().