Daniel P Weaver

US Patent:

7783607, Aug 24, 2010

Filed:

Sep 28, 2007

Appl. No.:

11/863902

Inventors:

Brian Cooper - San Jose CA, US
Daniel Weaver - Redwood City CA, US
Michael Bigby - San Jose CA, US
Utkarsh Srivastava - Fremont CA, US
Philip L. Bohannon - Cupertino CA, US
Ramana Yerneni - Cupertino CA, US

Assignee:

Yahoo! Inc. - Sunnyvale CA

International Classification:

G06F 17/30

US Classification:

707662, 711161, 711162

Abstract:

A technique is described that reduces the complexity and resource consumption associated with performing record expiry in a distributed database system. In accordance with the technique, a record is checked to see if it has expired only when it has been accessed for a read or a write. If at the time of a read a record is determined to have expired, then it is not served. If at the time of a write a record is determined to have expired, then the write is treated as an insertion of a new record, and steps are taken to treat the insertion consistently with regard to the previous expired version. A background process is used to delete records that have not been written to or actively deleted by a client after expiration.

US Patent:

7958088, Jun 7, 2011

Filed:

Dec 14, 2007

Appl. No.:

11/957132

Inventors:

Ramana V. Yerneni - Cupertino CA, US
Michael Bigby - San Jose CA, US
Philip Bohannon - Cupertino CA, US
Bryan Call - San Jose CA, US
Brian Cooper - San Jose CA, US
Andrew Feng - Cupertino CA, US
David Lomax - San Jose CA, US
Raghu Ramakrishnan - Santa Clara CA, US
Utkarsh Srivastava - Fremont CA, US
Daniel Weaver - Redwood City CA, US

Assignee:

Yahoo! Inc. - Sunnyvale CA

International Classification:

G06F 7/00

US Classification:

707610

Abstract:

Methods and apparatuses are provided for dynamically reorganizing the data within a replicated database system. One method, for example, includes performing a split operation across a plurality of replicated databases with regard to an existing partition therein, wherein the existing partition comprises a plurality of data records and the two new partitions each include at least a portion of the plurality of data records, and allowing at least one type of access to the plurality of data records during the split operation.

US Patent:

8022448, Sep 20, 2011

Filed:

Oct 5, 2010

Appl. No.:

12/898632

Inventors:

Lam T. Luu - Moorpark CA, US
Shiban K. Tiku - Camarillo CA, US
Richard S. Bingle - Thousand Oaks CA, US
Jens A. Riege - Ojai CA, US
Heather L. Knoedler - Newbury Park CA, US
Daniel C. Weaver - Newbury Park CA, US

Assignee:

Skyworks Solutions, Inc. - Woburn MA

International Classification:

H01L 29/76

US Classification:

257288, 257347, 257E21161, 257E21169, 257E21295, 257 48, 438674, 438768, 438785, 438240, 438 7

Abstract:

Apparatus and methods for evaporating metal onto semiconductor wafers are disclosed. One such apparatus can include an evaporation chamber that includes a wafer holder, such as a dome, and a test wafer holder that is separate and spaced apart from the wafer holder. In certain implementations, the test wafer can be coupled to a cross beam supporting at least one shaper. A metal can be evaporated onto production wafers positioned in the wafer holder while metal is evaporated on a test wafer positioned in a test wafer holder. In some instances, the production wafers can be GaAs wafers. The test wafer can be used to make a quality assessment about the production wafers.

US Patent:

8030725, Oct 4, 2011

Filed:

Oct 5, 2010

Appl. No.:

12/898616

Inventors:

Lam T. Luu - Moorpark CA, US
Heather L. Knoedler - Newbury Park CA, US
Richard S. Bingle - Thousand Oaks CA, US
Daniel C. Weaver - Newbury Park CA, US

Assignee:

Skyworks Solutions, Inc. - Woburn MA

International Classification:

H01L 27/146

US Classification:

257443, 257 30, 257 31, 257635, 257E21169, 257E21295, 438 98, 438768, 438785, 438 14, 438 7

Abstract:

Apparatus and methods for detecting evaporation conditions in an evaporator for evaporating metal onto semiconductor wafers, such as GaAs wafers, are disclosed. One such apparatus can include a crystal monitor sensor configured to detect metal vapor associated with a metal source prior to metal deposition onto a semiconductor wafer. This apparatus can also include a shutter configured to remain in a closed position when the crystal monitor sensor detects an undesired condition, so as to prevent metal deposition onto the semiconductor wafer. In some implementations, the undesired condition can be indicative of a composition of a metal source, a deposition rate of a metal source, impurities of a metal source, position of a metal source, position of an electron beam, and/or intensity of an electron beam.

US Patent:

8481344, Jul 9, 2013

Filed:

Jul 8, 2011

Appl. No.:

13/179382

Inventors:

Lam T. Luu - Moorpark CA, US
Shiban K. Tiku - Camarillo CA, US
Richard S. Bingle - Thousand Oaks CA, US
Jens A. Riege - Ojai CA, US
Heather L. Knoedler - Newbury Park CA, US
Daniel C. Weaver - Newbury Park CA, US

Assignee:

Skyworks Solutions, Inc. - Woburn MA

International Classification:

H01L 21/687
C23C 14/54

US Classification:

438 14, 438604, 118712, 118730

Abstract:

Apparatus and methods for evaporating metal onto semiconductor wafers are disclosed. One such apparatus can include an evaporation chamber that includes a wafer holder, such as a dome, and a test wafer holder that is separate and spaced apart from the wafer holder. In certain implementations, the test wafer can be coupled to a cross beam supporting at least one shaper. A metal can be evaporated onto production wafers positioned in the wafer holder while metal is evaporated on a test wafer positioned in a test wafer holder. In some instances, the production wafers can be GaAs wafers. The test wafer can be used to make a quality assessment about the production wafers.

US Patent:

8546205, Oct 1, 2013

Filed:

Jul 19, 2011

Appl. No.:

13/186356

Inventors:

Lam T. Luu - Moorpark CA, US
Heather L. Knoedler - Newbury Park CA, US
Richard S. Bingle - Thousand Oaks CA, US
Daniel C. Weaver - Newbury Park CA, US

Assignee:

Skyworks Solutions, Inc. - Woburn MA

International Classification:

C23C 16/00
C23C 8/00
H05H 1/24
H01L 21/84
H01L 21/8249

US Classification:

438166, 427569, 427585, 427250, 438235

Abstract:

Apparatus and methods for detecting evaporation conditions in an evaporator for evaporating metal onto semiconductor wafers, such as GaAs wafers, are disclosed. One such apparatus can include a crystal monitor sensor configured to detect metal vapor associated with a metal source prior to metal deposition onto a semiconductor wafer. This apparatus can also include a shutter configured to remain in a closed position when the crystal monitor sensor detects an undesired condition, so as to prevent metal deposition onto the semiconductor wafer. In some implementations, the undesired condition can be indicative of a composition of a metal source, a deposition rate of a metal source, impurities of a metal source, position of a metal source, position of an electron beam, and/or intensity of an electron beam.

US Patent:

20090144220, Jun 4, 2009

Filed:

Nov 30, 2007

Appl. No.:

11/948236

Inventors:

Andrew A. Feng - Cupertino CA, US
Michael Bigby - San Jose CA, US
Bryan Call - San Jose CA, US
Brian F. Cooper - San Jose CA, US
Daniel Weaver - Redwood City CA, US

Assignee:

YAHOO! INC. - Sunnyvale CA

International Classification:

G06F 17/30

US Classification:

707 1, 707E17052

Abstract:

A system for storing a distributed hash table. The system includes a storage unit, a tablet controller, a router, and a transaction bank. The storage unit has a plurality of tablets forming a hash table and each of the tablets includes multiple records. The tablet controller maintains a relationship between each tablet and the storage unit. The router hashes a record's key to determine the tablet associated with each record. Further, the router distributes messages from clients to the storage units based on the tablet-storage unit relationship thereby serving as a layer of indirection. The transaction bank propagates updates made in one record to all other replicas of the record.

US Patent:

20090144333, Jun 4, 2009

Filed:

Nov 30, 2007

Appl. No.:

11/948262

Inventors:

Andrew A. Feng - Cupertino CA, US
Michael Bigby - San Jose CA, US
Bryan Call - San Jose CA, US
Brian F. Cooper - San Jose CA, US
Daniel Weaver - Redwood City CA, US

Assignee:

YAHOO! INC. - Sunnyvale CA

International Classification:

G06F 17/30

US Classification:

707200, 707E17005

Abstract:

A system for maintaining a database. The system includes a storage unit for storing many tablets each tablet including multiple records. The tablet controller is configured to maintain the relationship between the tablet and the storage unit. The tablet controller tracks failures to access the storage unit and designates a new storage unit for each tablet based on a storage unit failure. A router is in communication with the tablet controller and configured to distribute messages from clients to the storage units thereby serving as a layer of indirection.