Joel Matthew Kindem

US Patent:

7164130, Jan 16, 2007

Filed:

Feb 18, 2004

Appl. No.:

10/782730

Inventors:

Dan Welsh - Encinitas CA, US
Joel Kindem - San Diego CA, US
Michael Gurley - San Diego CA, US
Richard L. Conwell - Del Mar CA, US

Assignee:

Digirad Corporation - Poway CA

International Classification:

G01T 1/00

US Classification:

2503361, 25037009, 250369

Abstract:

Events of interest are detected within a gamma ray detection system. Characteristics of undesired signals, including a multiplicity of events within the signal, a density of events within the signal, and other aspects are determined. The signal is filtered based on its expected characteristics. A signal which does not have the expected characteristics is rejected, and an image is formed that excludes those rejected signals.

US Patent:

7605397, Oct 20, 2009

Filed:

Aug 14, 2006

Appl. No.:

11/504542

Inventors:

Joel Kindem - San Diego CA, US
Lars S. Carlson - Carlsbad CA, US

Assignee:

Digirad Corporation - San Diego CA

International Classification:

H01L 29/40
H01L 29/88

US Classification:

257 46, 257106, 257E31063

Abstract:

An indirect connection to and across a photodiode array. The backside contact is used as one portion which connects to a capacitor. The capacitor forms a shunt across the bulk substrate, thus shunting across the series resistance of the substrate, and reducing the series resistance.

US Patent:

7732780, Jun 8, 2010

Filed:

May 22, 2007

Appl. No.:

11/752126

Inventors:

Joel Kindem - San Diego CA, US

Assignee:

Digirad Corporation - Poway CA

International Classification:

G01T 1/24

US Classification:

25037015

Abstract:

A combined cold plate for RF shield is optimized both for cooling a device and also for shielding it against RF. One embodiment uses a two-part material so that it has improved thermal characteristics from one part and RF shielding characteristics from another part.

US Patent:

7927903, Apr 19, 2011

Filed:

Oct 20, 2009

Appl. No.:

12/582095

Inventors:

Joel Kindem - Poway CA, US
Lars Carlson - Poway CA, US

Assignee:

Digirad Corporation - Poway CA

International Classification:

H01L 21/00

US Classification:

438 48, 438 66, 257E21352

Abstract:

An indirect connection to and across a photodiode array. The backside contact is used as one portion which connects to a capacitor. The capacitor forms a shunt across the bulk substrate, thus shunting across the series resistance of the substrate, and reducing the series resistance.

US Patent:

20050104000, May 19, 2005

Filed:

Feb 10, 2004

Appl. No.:

10/776645

Inventors:

Joel Kindem - San Diego CA, US
Lars Carlson - San Diego CA, US

International Classification:

G01T001/20

US Classification:

25036100R, 250367000, 250368000

Abstract:

A scintillator assembly with at least one scintillator pixel. A reflector is preformed, and at least a portion of the scintillator material fits within the preformed reflector. The reflector assembly may have a single pre-formed unit or a plurality of subassemblies, one or a plurality of which having been pre-formed prior to insertion of one or a plurality of scintillator pixels. The reflector assembly may provide for the formation of intentional air gaps between one or a plurality of reflector walls and one or a plurality of scintillator pixels.

US Patent:

20050157193, Jul 21, 2005

Filed:

Oct 4, 2004

Appl. No.:

10/958689

Inventors:

Joel Kindem - San Diego CA, US
Lars Carlson - San Diego CA, US

International Classification:

H04N005/225
H01F038/38
H01F030/12
H04N005/335
H04N003/14

US Classification:

348294000, 348372000

Abstract:

An embedded power supply for providing a voltage on a detector module within an imaging system provides the required potential to the module from charge stored on an output capacitor. Charge on the capacitor is replenished by injecting, commonly referred to as pumping, current into the capacitor by pulses of current generated by switching mode circuitry. Charge pumping into the capacitor is efficient because energy is stored in low-loss passive components and transferred into the low-loss output capacitor through low-impedance paths. Switching noise of the power supply is eliminated by turning off the charge pumping circuit during periods when such noise would disrupt the operation of the module, for example when the module is reading out image data. The output capacitor is large enough to supply the required voltage to the module for a certain period when the capacitor is not being pumped.

US Patent:

20060227230, Oct 12, 2006

Filed:

Mar 28, 2006

Appl. No.:

11/392221

Inventors:

Joel Kindem - San Diego CA, US
Lars Carlson - San Diego CA, US

International Classification:

H04N 5/335
H04N 3/14

US Classification:

348294000

Abstract:

An embedded power supply for providing a voltage on a detector module within an imaging system provides the required potential to the module from charge stored on an output capacitor. Charge on the capacitor is replenished by injecting, commonly referred to as pumping, current into the capacitor by pulses of current generated by switching mode circuitry. Charge pumping into the capacitor is efficient because energy is stored in low-loss passive components and transferred into the low-loss output capacitor through low-impedance paths. Switching noise of the power supply is eliminated by turning off the charge pumping circuit during periods when such noise would disrupt the operation of the module, for example when the module is reading out image data. The output capacitor is large enough to supply the required voltage to the module for a certain period when the capacitor is not being pumped.

US Patent:

20070092144, Apr 26, 2007

Filed:

Aug 17, 2006

Appl. No.:

11/506607

Inventors:

Chuanyong Bai - Poway CA, US
Joel Kindem - San Diego CA, US
Jeff Gordon - San Diego CA, US
Richard Conwell - Del Mar CA, US
Hetal Babla - Poway CA, US

International Classification:

G06K 9/36
G06K 9/00

US Classification:

382232000, 382128000

Abstract:

Medical imaging information is randomly resampled into the new resampled form. The random resampling can maintain the random nature of the information, and can avoid count loss.