Mark J Chapman

US Patent:

20100058409, Mar 4, 2010

Filed:

Aug 29, 2008

Appl. No.:

12/231235

Inventors:

Mark Chapman - Irvine CA, US
Scott Griffith - San Clemente CA, US
Dan Stack - Foothill Ranch CA, US
Tony Vittimberga - Aliso Viejo CA, US

Assignee:

Comarco Wireless Technologies, Inc. - Lake Forest CA

International Classification:

H04N 7/173

US Classification:

725106, 725107

Abstract:

A centralized audio video testing system utilizes a remote client device. The remote client device includes a decoder, a renderer, a media engine, a video capture module and a frame module. The decoder receives a transmitted video stream from a video streaming server and to generate a decoded video stream. The renderer receives the decoded video stream and generates a rendered video stream that is able to be displayed on a display of the remote client device. The media engine receives the rendered video stream and plays the rendered video stream on a media player resident on the remote client device. The video capture module captures frames of the played rendered video stream. The frame manager receives the captured frames of the played rendered video streams and creates a degraded streaming video file.

US Patent:

58452044, Dec 1, 1998

Filed:

Aug 11, 1995

Appl. No.:

8/514509

Inventors:

Mark Chapman - Irvine CA
Dennis E. Starbuck - Fountain Valley CA

Assignee:

Rockwell International Corporation - Newport Beach CA

International Classification:

H04B 116

US Classification:

455343

Abstract:

A low-power stop mode "snooze" timer is implemented in the processing unit of a communication system, which runs without the use of the usual crystal-controlled oscillator. The "snooze" timer is implemented by a second oscillator with associated timer circuit. The second oscillator runs continually and feeds a timer which is loaded with a suitable value. The timer, when timed out or expired, will reactivate the main processing functions, thus allowing the successful reception of an external signal from a remote transmission source. To compensate for the inaccuracy of the second oscillator due to its dependence upon voltage, process and temperature, the snooze timer's output is calibrated during the wake-up periods against a timing signal derived from the internal crystal-controlled timing source. This calibration compensates for the inherent frequency instability of the second oscillator and allows a timing signal of sufficient accuracy to be maintained over the stop cycle.

US Patent:

20200123007, Apr 23, 2020

Filed:

Oct 23, 2019

Appl. No.:

16/661506

Inventors:

- San Clemente CA, US
Weiwei Zhou - Irvine CA, US
Mark Chapman - Irvine CA, US

International Classification:

C01B 32/162
C01B 32/159

Abstract:

The present invention discloses compositions and methods for generating engineered catalysts and synthesizing semiconducting single wall carbon nanotubes using the catalysts Carbon nanotubes (CNTs). The CNTS are either metallic or semiconducting, with diameters controlled by an engineered catalyst to selectively synthesizes the semiconducting CNT. The engineered catalyst consists of two types of metals, a high melting point metal and an active transition metal. Each of the metals remains solid state during a growth of semiconducting CNTs, and each is present as nanoparticles, having sizes between 0.5 nm and 10 nm. The ratio of the high melting point metal with respect to the active transition metal is preferably between 1:0.25 and 1:10.