Hamid Kharrati

8542005, Sep 24, 2013

Apr 28, 2010

12/769065

Hamid Kharrati - La Jolla CA, US
Steven D. Roach - Colorado Springs CO, US
Joseph Sascha Willis - San Marcos CA, US

Teradyne, Inc. - North Reading MA

G01R 13/34
G01R 23/16
G01R 21/00

324121R, 324 7612, 702125

An apparatus includes a first oscilloscope having multiple channels, and a second oscilloscope having multiple channels. The first oscilloscope is configured to operate as a master or as a slave. The first oscilloscope operates as the master by using a first trigger signal and a first clock signal that are native to the first oscilloscope, and the first oscilloscope operates as the slave by using a second trigger signal and a second clock signal that are native to the second oscilloscope. The second oscilloscope is configured to operate as the master or as the slave. The second oscilloscope operates as the master by using the second trigger signal and the second clock signal, and the second oscilloscope operates as the slave by using the first trigger signal and the first clock signal.

20110267037, Nov 3, 2011

Apr 28, 2010

12/769075

Hamid Kharrati - La Jolla CA, US
Steven D. Roach - Colorado Springs CO, US
Joseph Sascha Wills - San Marcos CA, US

G01R 13/20

324121 R

Circuitry includes a comparator to compare an input analog signal to a threshold and to output a signal that is based on the comparison; a first circuit path to receive the signal and to detect a characteristic of the signal, where the first circuit path is configured to support triggering at a first frequency; a second circuit path to receive the signal and to detect the characteristic of the signal, where the second circuit path is configured to support triggering at a second frequency that is lower than the first frequency; and a selector to select an output of the first circuit path or an output of the second circuit path.

20090146917, Jun 11, 2009

Dec 11, 2007

12/001312

Hamid Kharrati - LaJolla CA, US
Robert J. Sefton - San Diego CA, US

G09G 3/14
G09G 3/00
G06K 9/00

345 46, 345 33, 702 95

A system and method are provided for a pixel module to determine its location in a large scale LED display. The system and method determine the pixel module's location based upon the data received by the module and the identity of the module's port via which the data was received.

20090146931, Jun 11, 2009

Dec 11, 2007

12/001276

Hamid Kharrati - LaJolla CA, US
Robert J. Sefton - San Diego CA, US
Sheldon Lee Black - LeMesa CA, US
Daniel S. Kline - Encinitas CA, US
Anthony D. Barghini - Encinitas CA, US

G09G 3/32

345 82

A system distributes data in a robust manner to a large scale LED display formed of a number of display panels. The system includes a plurality of data hubs wherein each display panel is connected to at least two data hubs to receive redundant pixel data for each pixel of the panel. Each data hub is further connected to at least two panels of the display to provide pixel data for each pixel of the panels to which the data hub is connected.

20090147028, Jun 11, 2009

Dec 11, 2007

12/001277

Robert J. Sefton - San Diego CA, US
Sheldon Lee Black - LaMesa CA, US
Hamid Kharrati - LaJolla CA, US
Daniel S. Kline - Encinitas CA, US
Anthony D. Barghini - Encinitas CA, US

G09G 5/10
G09G 3/32
G09F 9/33

345690, 345 82

A system and method distributes data and power in a robust manner for a large scale LED display. Master modules of the display are capable of receiving a data stream on any one of four data ports. The master modules extract the data for its module and an associated group of slave modules from a data stream received on one port and send the received data stream to three other master modules via the other three data ports. Unregulated D.C. power is distributed from one or more power hubs to the master modules which in turn distribute regulated D.C. power to their associated slave modules.