Scott L Petrick, 6978 Briery Creek Dr, Forest, VA 24551

6343112, Jan 29, 2002

Dec 14, 2000

09/736726

Scott William Petrick - Sussex WI
Anupama Somayaji - Waukesha WI

GE Medical Systems Global Technology Company, LLC - Waukesha WI

H05G 164

378 989, 378 62, 378207

A preferred embodiment of the present invention provides a method and apparatus for reducing photoconductive effects in dual energy applications of solid state digital x-ray detectors. The method comprises exposing a detector to a first exposure from an energy source and obtaining a first image data set during a first read time from the first exposure following a first delay. The method further comprises exposing the detector to a second exposure from the energy source and obtaining a second image data set during a second read time from the second exposure following a second delay. The first delay is less than the second delay. The first read time is less than the second read time.

6359967, Mar 19, 2002

Nov 25, 1998

09/199710

Scott A. Bielski - Sussex WI
Scott W. Petrick - Sussex WI
Lawrence R. Skrenes - Hartland WI

General Electric Company - Schenectady NY

H05G 164

378 988, 25037009, 348308

A discrete pixel detector is charge compensated in a plurality of scan modes. In each scan mode a different number of rows of the detector is enabled, and signals produced at discrete pixel locations are read at the detector columns. Charges due to parasitic capacitance between the rows and columns are compensated and balanced by applying a compensation voltage to rows not enabled. The number of rows receiving the compensation voltage varies depending upon the number of enabled rows in each scan mode. A single compensation voltage may be used by applying the compensation voltage to a fixed multiple of the number of enabled rows in each scan mode.

6396253, May 28, 2002

Nov 19, 1999

09/443733

Scott W. Petrick - Sussex WI
Matthew E. Ellis - Waukesha WI
Didier A. Verot - Versailles, FR
Donald E. Castleberry - Niskayuna NY

General Electric Company - Schenectady NY

G01R 3102

324 731, 3241581, 324 711, 324522, 324523, 324527

A method for detecting cut data lines in an imaging array having a detector including an array of pixels for measuring radiation, and a plurality of data line contacts is provided. The method includes the steps of initializing pixels of the imaging array which includes a plurality of data lines including at least one uncut data line and at least one cut data line, wherein each cut data line is electrically connected to at least one of the plurality of data line contacts and at least one uncommitted contact. The method further includes determining a signal level for the uncut data lines, measuring a signal level of each data line in the plurality of data lines, and determining a number of cut data lines and a number of uncut data lines by using the signal levels received from each data line in the plurality of data.

6404852, Jun 11, 2002

Mar 15, 2001

09/681300

Scott W. Petrick - Sussex WI
Christine Quong - Waukesha WI

GE Medical Systems Global Technology Company - Waukesha WI

H05G 164

378 988, 25037009

An x-ray system ( ) reads data from a detector array ( ) including detector elements ( ) arranged in rows (R R ) and columns (C C ). A first group of rows include unneeded data (R R ) while a second group of rows include data of interest (R R ). Activation of the detector elements in relation to the exposure of a patient to x-rays to improve efficiency with which the data of interest is read is disclosed. An exposure control ( ) activates an x-ray tube ( ) to expose the detector to x-rays during a first time period (E ). The first group of rows (R R ) are activated at least partially before or during the first time period. The second group of rows (R R ) are activated after the first time period. Data is read from the second group of rows after the first time period.

6426672, Jul 30, 2002

Aug 28, 1997

08/919936

Scott W. Petrick - Sussex WI
Lawrence R. Skrenes - Hartland WI
Douglas E. Sease - Waukesha WI
Richard D. Baertsch - Scotia NY

General Electric Company - Milwaukee WI

H03K 190948

327544, 327530

A signal processing circuit can be used to select between a high bias current and good noise performance or a low bias current and poorer noise performance. The circuit comprises an input device having high impedance and low noise characteristics. A first current source provides a minimal current level through the input device. Additional current sources provide additional current through the input device to improve noise performance of the circuit. The additional current sources can be switched into the circuit when improved noise performance is required, and switched out of the circuit to conserve power when improved noise performance is not required.

6457861, Oct 1, 2002

Nov 15, 2000

09/713730

Scott Petrick - Sussex WI
Swami Narasimhan - Waukesha WI
Habib Vafi - Brookfield WI

GE Medical Systems Global Technology Company, LLC - Waukesha WI

G01D 1800

378207, 378 4

A method and apparatus for correcting electronic offset and gain variations in solid state x-ray detectors includes dedicating rows at the end of an x-ray detector scan. The dedicated rows may be used to measure the âsignalâ induced by electronic offset and gain variations in solid state x-ray detectors. The first row may be used to measure the signal induced by electronic offset. The second row may be used to measure to signal induced by gain variations. Measurements of the induced signals taken from the dedicated rows may be used to eliminate structured artifacts from the x-ray image.

6535576, Mar 18, 2003

Dec 29, 2000

09/752084

Habib Vafi - Brookfield WI
Scott W. Petrick - Sussex WI
Douglas I. Perry - Ottawa, CA

GE Medical Systems Global Technology Company, LLC - Waukesha WI

H05G 164

378 988, 348308

A technique is provided for increasing the pixel pitch without increasing the interconnect density of a digital detector. Generally, a digital detector has an array of rows and columns of pixels, read out electronics and scan electronics, that are configured to generate and transmit signals based upon radiation impacting the detector. The detector also having a plurality of scan lines, which are coupled to the plurality of rows of pixels. The present technique also provides a multiplexing circuit for selectively coupling the rows of pixels to the respective scan lines for read out of the signals.

6538253, Mar 25, 2003

Dec 29, 2000

09/752029

Scott W. Petrick - Sussex WI
Richard G. Cronce - New Berlin WI
Donald E. Castleberry - Niskayuna NY

GE Medical Systems Global Technology Company, LLC - Waukesha WI

H01L 2500

25037009, 2502081

A technique is provided for automatically initiating reset of a digital detector. Generally, a digital detector has an array of rows and columns of pixels, read out electronics and scan electronics, that are configured to generate and transmit signals based upon radiation impacting the detector. The technique incorporates an automatic reset circuit that provides state machines to implement a reset if no readout or scrub command is received within a set time interval, or if communication with a readout control circuit is not available. The technique also includes methods for monitoring inputs, and resetting the charge on the rows and columns of pixels.