David R Ryan

US Patent:

6621851, Sep 16, 2003

Filed:

Nov 28, 2000

Appl. No.:

09/723337

Inventors:

Brian G. Agee - San Jose CA
Matthew Bromberg - San Jose CA
Derek Gerlach - Mountain View CA
David Gibbons - Redmond WA
James Timothy Golden - Carnation WA
Minnie Ho - Palo Alto CA
Elliott Hoole - Redmond WA
Mary Jesse - Issaquah WA
Robert Lee Maxwell - Duvall WA
Robert Ray Naish - San Jose CA
David J. Nix - Issaquah WA
David James Ryan - Oakland CA
David Stephenson - San Jose CA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

H04B 169

US Classification:

375130, 375135, 370242

Abstract:

A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms.

US Patent:

20020122465, Sep 5, 2002

Filed:

Aug 3, 2001

Appl. No.:

09/920903

Inventors:

Brian Agee - San Jose CA, US
Matthew Bromberg - San Jose CA, US
Derek Gerlach - Mountain View CA, US
David Gibbons - Redmond WA, US
James Golden - Carnation WA, US
Minnie Ho - Palo Alto CA, US
Elliott Hoole - Redmond WA, US
Mary Jesse - Issaquah WA, US
Robert Maxwell - Duvall WA, US
Robert Mechaley - Lexington MA, US
Robert Naish - San Jose CA, US
David Nix - Issaquah WA, US
David Ryan - Seattle WA, US
David Stephenson - San Jose CA, US

International Classification:

H04K001/00

US Classification:

375/141000

Abstract:

A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms. In a specific embodiment the spectral and spatial components of the adaptive weights are calculated in a unified operation based on the mathematical analogy between the spectral and spatial descriptions of the airlink.

US Patent:

60793538, Jun 27, 2000

Filed:

Mar 28, 1998

Appl. No.:

9/050228

Inventors:

David Leksell - Aptos CA
Ming Xi Chan - Milpitas CA
Joseph P. Ellul - San Jose CA
Jeanne L. Luce - Fremont CA
David T. Ryan - Concord CA
Iqbal A. Shareef - Campbell CA
Chung J. Lee - Fremont CA
Giovanni Antonio Foggiato - Morgan Hill CA

Assignee:

Quester Technology, Inc. - Fremont CA

International Classification:

C23C 1600

US Classification:

118715

Abstract:

This invention relates to the design of apparatus for processing electronic devices, including equipment for chemical vapor deposition. The new designs of gas separator plates, their configuration, and the regulation of gas flows through the system provides control over the pattern of precursor gas flow away from the separation plates, thereby decreasing the amount of byproducts that are deposited on the plates and throughout the reactor. New designs for shaping other surfaces of the dispersion head reduces contamination of those elements, and new designs for chamber panels decrease the deposition of byproducts on those surfaces, as well as other elements of the reactor. Decreasing deposition of byproducts increases the amount of thin film, and the quality of the film which can be deposited without requiring the system to be shut down. This increases the throughput of products in the deposition process, thereby increasing the efficiency of electronic device manufacture and lowering the cost.

US Patent:

61142271, Sep 5, 2000

Filed:

Mar 29, 1999

Appl. No.:

9/280258

Inventors:

David Leksell - Aptos CA
Ming Xi Chan - Milpitas CA
Joseph P. Ellul - San Jose CA
Jeanne L. Luce - Fremont CA
David T. Ryan - Concord CA
Iqbal A. Shareef - Campbell CA
Chung J. Lee - Fremont CA
Stephen M. Campbell - San Jose CA
Giovanni Antonio Foggiato - Morgan Hill CA

Assignee:

Quester Technology, Inc. - Fremont CA

International Classification:

H01L 2120

US Classification:

438584

Abstract:

This invention relates to the design of apparatus for processing electronic devices, including equipment for chemical vapor deposition or transport polymerization. The new designs of gas separator plates, their configuration, and the regulation of gas flows through the system provides control over the pattern of precursor gas flow away from the separation plates, thereby decreasing the amount of byproducts that are deposited on the plates and throughout the reactor. New designs for shaping other surfaces of the dispersion head reduces contamination of those elements, and new designs for chamber panels decrease the deposition of byproducts on those surfaces, as well as other elements of the reactor. Decreasing deposition of byproducts increases the amount and the quality of the film that can be deposited without requiring the system to be shut down for cleaning. This increases the throughput of products in the deposition process, thereby increasing the efficiency of electronic device manufacture and lowering the cost.

US Patent:

48680230, Sep 19, 1989

Filed:

Oct 2, 1987

Appl. No.:

7/104716

Inventors:

David Ryan - Mountain View CA
Lawrence D. Schwartz - Menlo Park CA
Philip Wallis - Laguna Hills CA
Kenneth M. Winterstein - San Marcos CA

Assignee:

Raychem Corporation - Menlo Park CA

International Classification:

B32B 300
B41M 700

US Classification:

428 351

Abstract:

An article having a surface comprising an olefin polymer is marked with indicia using an ink comprising a binder capable of substantially complete cure at a temperature of about 100. degree. to 300. degree. C. for less than about 10 minutes and then heated to cure the binder. The indicia are permanent, e. g. are resistant to being rubbed off and are solvent resistant. Heat-recoverable marker sleeves having such permanent indicia are particularly useful for marking wires, e. g. in aircraft harnessing.