David R Warren

US Patent:

6414682, Jul 2, 2002

Filed:

Dec 28, 1998

Appl. No.:

09/220596

Inventors:

David S. Warren - Mountain View CA
David L. Dignam - Belmont CA

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 1500

US Classification:

345428

Abstract:

The present invention provides a system, apparatus and method for filtering an image that produces output images having high resolution without visual discontinuity across a wide range of resize ratios. The invention includes a linear filter for source images requiring low magnification and a higher order filter for source images requiring high magnification. In the transition region an interpolation is performed between the linear and higher order filters to provide a smooth transition in filtering and magnification to produce an output image.

US Patent:

8359083, Jan 22, 2013

Filed:

Apr 2, 2009

Appl. No.:

12/417530

Inventors:

Gregory Arthur Clark - Salt Lake City UT, US
David J. Warren - Salt Lake City UT, US
Noah M. Ledbetter - Salt Lake City UT, US
Marcy Lloyd - Milwaukee WI, US
Richard A. Normann - Park City UT, US

Assignee:

University of Utah Research Foundation - Salt Lake City UT

International Classification:

A61B 5/0478
A61N 1/05
A61B 5/0484

US Classification:

600378, 600373, 600393, 600544, 607117, 607118

Abstract:

A microelectrode array system used to sense physiological signals and stimulate physiological tissue to form signals is disclosed. The array includes a dielectric substrate and a two dimensional array of signal microelectrodes substantially perpendicular to and integrated on the dielectric substrate. At least one reference microelectrode is located adjacent to and integrated with the signal microelectrodes on the dielectric substrate. The reference microelectrodes are positioned on the dielectric substrate relative to the signal microelectrodes to enable a reduced level of electrical noise to be detected between the reference microelectrodes and the recording microelectrodes.

US Patent:

8639312, Jan 28, 2014

Filed:

Dec 10, 2009

Appl. No.:

12/635374

Inventors:

Gregory Arthur Clark - Salt Lake City UT, US
David J. Warren - Salt Lake City UT, US
Noah M. Ledbetter - Salt Lake City UT, US

Assignee:

University of Utah Research Foundation - Salt Lake City UT

International Classification:

A61B 5/0478
A61N 1/05
A61B 5/0484

US Classification:

600378, 600373, 600393, 600544, 607117, 607118

Abstract:

A system and method for electrically shielding a physiological pathway from electrical noise is disclosed. The method includes the operation of implanting at least one signal microelectrode into a patient such that the signal microelectrode is proximate to the physiological pathway. An additional operation includes substantially enclosing the microelectrode and a section of the physiological pathway with an electrical shielding wrap. The electrical shielding wrap includes a plurality of holes that enable fluid communication of physiological fluids between an inside and outside of the wrap.

US Patent:

8643417, Feb 4, 2014

Filed:

Jul 11, 2012

Appl. No.:

13/546540

Inventors:

Diarmuid P. Ross - Mountain View CA, US
Douglas C. Lee - Cupertino CA, US
David S. Warren - Campbell CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

H03L 7/00

US Classification:

327161

Abstract:

A method and apparatus for scaling a DLL code for a slave DLL operating at a different frequency than a master DLL is disclosed. An apparatus includes a master DLL coupled to receive a first clock signal and a group of series-coupled slave DLLs coupled to receive a second clock signal. The master DLL may provide a specified fraction of a cycle of the first clock signal. Scaling circuitry coupled between the master DLL and the group of slave DLLs may determine a ratio of frequencies of the first clock signal to the second clock signal. Based on the ratio and a delay code from the first DLL, the scaling circuitry may generate an adjusted delay code received by the group of slave DLLs to set a delay for the second clock signal to the specified fraction.

US Patent:

20100245401, Sep 30, 2010

Filed:

Sep 26, 2008

Appl. No.:

12/680444

Inventors:

Euan C. Smith - Cambridgeshire, GB
David S. Warren - Sunnyvale CA, US
Richard Alan Page - Mountain View CA, US
Stefan Wurster - Livermore CA, US
Barry Thompson - Menlo Park CA, US

Assignee:

CAMBRIDGE DISPLAY TECHNOLOGY LIMITED - Cambridgeshire

International Classification:

G09G 5/00

US Classification:

345690, 345204, 345 76

Abstract:

A method of driving an electro-optic display comprising providing a current source, digitally modulating the current source and generating a modulated digital signal, and converting the modulated digital signal into an effective analog drive signal so that the display pixels receive an effective analog drive current, wherein the internal capacitance of the electro-optic display smooths the digitally modulated signal and generates the effective analog drive signal.

US Patent:

20130060363, Mar 7, 2013

Filed:

Sep 2, 2011

Appl. No.:

13/224439

Inventors:

David S. Warren - Campbell CA, US

International Classification:

G06F 17/00

US Classification:

700 94

Abstract:

An apparatus includes a first unit and a second functional units operating in a master-slave configuration. The first and second functional units operate as a master and slave, respectively. The first functional unit conveys clock and framing signals to the second functional unit. The second functional unit includes a buffer and a multiplexer having inputs coupled to the buffer. Digital audio data may be prefetched into the buffer. When a controller of the second functional unit detects assertion of the framing signal, it may cause a change of state to a selection signal provided to the multiplexer. Responsive thereto, the multiplexer selects an input coupled to receive, from the buffer, a next frame of data to be transmitted. A first bit of the frame is transmitted to the first functional unit on the same clock cycle in which assertion of the framing signal was detected.

US Patent:

20130259483, Oct 3, 2013

Filed:

Oct 27, 2010

Appl. No.:

13/881004

Inventors:

Moray McLaren - Bristol, GB
Nathan Lorenzo Binkert - Redwood City CA, US
David A. Warren - El Dorado Hills CA, US
Michael Renne Ty Tan - Menlo Park CA, US

Assignee:

HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. - Houston TX

International Classification:

H04J 14/02

US Classification:

398 79

Abstract:

This disclosure is directed to optical-to-electrical receiver and transceiver integrated circuits that can be used to send and receive multiple optical signal data streams using at least one optical bus. In one aspect, a fan-in integrated circuit of a node includes an arbiter/multiplexer, and at least one receiver. Each receiver is electronically connected to the arbiter/multiplexer. Each receiver receives at least one optical signal over an optical broadcast bus and converts the optical signals into a data stream encoded in electronic signals. The arbiter/multiplexer selects one receiver at a time to send an electronic signal to the arbiter/multiplexer and outputs the electronic signal to the node for processing.

US Patent:

47939087, Dec 27, 1988

Filed:

Dec 29, 1986

Appl. No.:

6/947141

Inventors:

Gene Scott - El Toro CA
Charles W. Kohlenberger - Fullerton CA
David M. Warren - Chino Hills CA

Assignee:

Rockwell International Corporation - El Segundo CA

International Classification:

C23C 1446

US Classification:

20419226

Abstract:

A method of fabricating multiple layer, solid, thin films on a substrate having a surface to be coated, the method providing control over the thickness, stoichiometry, and morphology of each separate layer formed by a method comprising steps: A. forming a first ion beam from an inert gas; B, bombarding a target surface with said first ion beam in a vacuum chamber to generate a vapor cloud composed of the target material atoms by the process of sputtering; C. adjusting the respective positions of the substrate surface for coating and the target surface to promote the condensation of the vapor upon the substrate surface for coating; D. forming a second ion beam, the second ion beam's ions being formed from a mixture of inert and reactive gases; E. bombarding the substrate surface simultaneously with the second ion beam to promote a chemical reaction between the target vapor atoms and the chemically reactive gas ions as the target atoms and the chemically reactive gas ions impinge upon the substrate surface for coating, the resulting chemical compound building up in thickness as a homogeneous thin solid film layer; F. positioning an alternative target material in the place occupied by the previous one; G.