Paul L Barker

US Patent:

7847538, Dec 7, 2010

Filed:

Dec 21, 2007

Appl. No.:

11/962909

Inventors:

Paul Gerald Barker - Allen TX, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G01R 31/02

US Classification:

3241581

Abstract:

An array of individually addressable micromirrors is characterized by sending a driving signal to a pixel group having a fewer number of micromirrors. A response of the micromirrors in the group is measured; and the micromirror array is characterized based upon at least the measured response.

US Patent:

20080273234, Nov 6, 2008

Filed:

May 1, 2007

Appl. No.:

11/799255

Inventors:

David Joseph Mehrl - Plano TX, US
Paul Gerald Barker - Allen TX, US

International Classification:

G02B 26/08

US Classification:

359223, 359224

Abstract:

A system and method for integrated, analog mode mirror devices. A system containing integrated, analog mode mirror devices includes a damped digital micromirror device (DDMD) optically coupled to a light source and positioned in a light path of the light source, and a controller electrically coupled to the DDMD. The damped micromirrors move more slowly than undamped micromirrors, thereby enabling control of the position of the micromirrors by the controller, with the position being in a range of positions between a first stop position and a second stop position. The micromirror may be moved to a position when presented with a drive waveform that has been modulated by a value specifying the position. This enables the specifying and control of the position of the individual micromirrors in the DDMD.

US Patent:

20090128481, May 21, 2009

Filed:

Nov 19, 2007

Appl. No.:

11/942122

Inventors:

Wei-Yan Shih - Plano TX, US
Henry W. Neal - Allen TX, US
Michael McCormick - Allen TX, US
Paul Gerald Barker - Allen TX, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G09G 5/00

US Classification:

345156

Abstract:

An integrated system comprising both imaging and computing capabilities comprises a light valve and a CPU, as well as other functional members for performing computing and imaging.

US Patent:

60884746, Jul 11, 2000

Filed:

Jul 23, 1997

Appl. No.:

8/899127

Inventors:

David V. Dudasko - Richardson TX
George L. Streckmann - Dallas TX
Dennis L. Doane - Richardson TX
Anthony S. Leonard - Dallas TX
Paul G. Barker - Dallas TX
Donald E. Russell - Richardson TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G06K 900

US Classification:

382145

Abstract:

A visual inspection system (10) and method for inspecting the operation of micromechanical devices. The system has a vision system (16), a vision system controller (18), a system controller (20), an illumination system (12), a digital signal processor and a mounting stage (22). The objects undergoing inspection, either wafers or devices, are mounted under the visions system. A probe card is engaged to the object and power is provided. The vision system (16) records which elements or devices on the object begin operating at that voltage. The voltage is then incremented and the process continues until a determination is made as to the objects operability. The system can also be adapted to inspect micromechanical spatial light modulators by generating images with the modulator and capturing them with the image system. The digital signal processor then analyzes the images while the vision system moves to the next object to be inspected.

US Patent:

20160075548, Mar 17, 2016

Filed:

Sep 17, 2014

Appl. No.:

14/488616

Inventors:

- Dallas TX, US
Paul G. Barker - Allen TX, US

International Classification:

B81B 3/00
H01G 5/16
H01L 41/04

Abstract:

A MEMS device includes a bottom plate structure supporting a conductive electrode. A flexible conductive top plate movably supported by a flexure is affixed to a small peripheral portion of the top plate that is aligned with the electrode. Drive circuitry applies a high level of a drive voltage signal between the electrode and the top plate to produce an attracting electrostatic force between the top plate and the electrode sufficient to overcome the flexure and draw the top plate against the electrode. The drive circuitry later applies a low level of the drive voltage signal to remove the electrostatic force and allow the flexure to peel the peripheral portion away from the electrode. Additional drive voltage signals may be applied to additional electrodes to draw additional peripheral portions of the top plate against the additional electrodes and successively removed to allow peripheral portions of the top plate to be sequentially peeled away from the electrodes.