David V Armstrong

US Patent:

6926086, Aug 9, 2005

Filed:

May 9, 2003

Appl. No.:

10/435642

Inventors:

Michael L. Patterson - Alvarado TX, US
Loren C. Swor - Duncan OK, US
Phillip M. Starr - Duncan OK, US
Raymund Meijs - Centennial CO, US
Danny D. Delozier - Duncan OK, US
David Armstrong - Rock Springs WY, US
Steven G. Streich - Duncan OK, US

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

E21B047/00

US Classification:

166376, 166134

Abstract:

A method of treating a subterranean formation surrounding a wellbore, according to which a tool inserted into the wellbore for performing a function in the wellbore is fabricated of a material that breaks up upon detonation of an explosive mounted on the tool, thus allowing the pieces of the tool to fall to the bottom of the wellbore.

US Patent:

7137053, Nov 14, 2006

Filed:

Sep 4, 2001

Appl. No.:

09/946857

Inventors:

Ajay Khoche - Cupertino CA, US
Jochen Rivoir - Magstadt, DE
David H. Armstrong - Boulder CO, US

Assignee:

Verigg IPco - Singapore

International Classification:

G01R 31/28

US Classification:

714726

Abstract:

An integrated circuit, including a configurable scan architecture used for an integrated circuit test procedure and quality control. The configurable scan chain architecture has the capability of being reconfigured to one of a variety scan chain architectures based on the constraints of the integrated circuit and the testing device. The present invention minimizes the integrated circuit test time by reconfiguring the scan architecture depending on certain constraints such as the latching frequency, the predetermined I/O frequency, the number of available integrated circuit I/O pins, the number of pins required for a proposed scan architecture, and the number of available pins on the testing device. The configurable scan architecture receives configuration signals which indicate which scan chain architecture should be configured on the integrated circuit that is being tested.

US Patent:

7788562, Aug 31, 2010

Filed:

Nov 29, 2006

Appl. No.:

11/606866

Inventors:

Thomas Joseph Brennan - Santa Clara CA, US
David Harry Armstrong - Santa Clara CA, US

Assignee:

Advantest Corporation - Tokyo, Nerima-Ku

International Classification:

G01R 31/28

US Classification:

714732, 714735

Abstract:

Pattern controllable LFSRs or MISRs are disclosed that are able to mask indeterminate states while performing tests on DUT outputs. At appropriate times, the MISRs or the LFSRs will mask the data being input to the MISRs or the LFSRs so that indeterminate states are not received. This allows fast/complex ATE Rx memory to be replaced by slower and smaller MISR pattern memory. At the end of a test period, the LFSRs or MISRs generate signatures which are then compared to a set of possible valid signatures for non-deterministic data. A pass/fail result is produced. By masking indeterminate states, fewer valid signatures need to be stored. Masking of the MISRs or LFSRs may be based on the fact that indeterminate states and good data in a serial output data stream tend to occur in predictable patterns, or that good data may follow alignment characters. MISR or LFSR output signatures may also be employed to test individual pattern segments instead of the entire input test pattern. This expected DUT Rx data compression implementation works for one signature (deterministic) data as well.

US Patent:

D3162516, Apr 16, 1991

Filed:

Dec 19, 1988

Appl. No.:

7/287982

Inventors:

David Y. Armstrong - San Diego CA

Assignee:

Mosaic Semiconductor, Inc. - San Diego CA

US Classification:

D13182

US Patent:

20210238105, Aug 5, 2021

Filed:

Aug 21, 2019

Appl. No.:

17/270238

Inventors:

- Pacific Palisades CA, US
David Armstrong - Carlsbad CA, US

Assignee:

Cortex Composites, Inc. - Pacific Palisades CA

International Classification:

C04B 40/00
B32B 13/04
B32B 7/12
B28B 19/00

Abstract:

A system for making a cementitious composite includes a cementitious material supply system for dispensing a powdered cementitious material or a semi-powdered cementitious material into a receiving material. The receiving material includes a structural layer and a sealing layer. The structural layer includes an open continuous volume extending from a first side to a second side opposite the first side. The sealing layer is coupled to the first side. The cementitious material supply system is configured to dispense the powdered cementitious material or the semi-powdered cementitious material into the open continuous volume to fill the open continuous volume.

US Patent:

20190086468, Mar 21, 2019

Filed:

Sep 21, 2018

Appl. No.:

16/138029

Inventors:

- Tokyo, JP
DAVID ARMSTRONG - San Jose CA, US
JINLEI LIU - San Jose CA, US
TSE-KUN CHEN - San Jose CA, US

International Classification:

G01R 31/28
G01R 1/44

Abstract:

Automated test equipment can generate feed-forward temperature profile information for a device under test (DUT), where the temperature data is determined from measurements performed during execution of a test pattern on the DUT, and can synchronize the temperature data and the cycles of the test pattern.