Robert G Culter

US Patent:

7816638, Oct 19, 2010

Filed:

Mar 30, 2005

Appl. No.:

11/095210

Inventors:

Steven J. Olson - Portland OR, US
Duwayne R. Anderson - Saint Helens OR, US
Robert G. Culter - Beaverton OR, US
Mark D. Owen - Beaverton OR, US

Assignee:

Phoseon Technology, Inc. - Hillsboro OR

International Classification:

H01L 31/00

US Classification:

2502141, 25033904, 257431

Abstract:

The present invention provides an optical system having an array of light emitting semiconductor devices to performing an operation that have multiple characteristics associated with performing the operation. The array includes at least one detector located within the array to selectively monitor multiple characteristics of the light emitting semiconductor devices and is configured to generate a signal corresponding to the selected characteristic. A controller is configured to control the light emitting semiconductor devices in response to the signal from the at least one detector. At least one of the multiple characteristics may be concentrated at an area of the array and the at least one detector may be located within the array at the area of the array to selectively monitor characteristic that is concentrated at the area of the array.

US Patent:

8039785, Oct 18, 2011

Filed:

Sep 27, 2010

Appl. No.:

12/891649

Inventors:

Steven J. Olson - Portland OR, US
Duwayne R. Anderson - Saint Helens OR, US
Robert G. Culter - Beaverton OR, US
Mark D. Owen - Beaverton OR, US

Assignee:

Phoseon Technology, Inc. - Hillsboro OR

International Classification:

H01L 31/00

US Classification:

2502141, 25033904, 250214 A, 257431

Abstract:

The present invention provides an optical system having an array of light emitting semiconductor devices to performing an operation that have multiple characteristics associated with performing the operation. The array includes at least one detector located within the array to selectively monitor multiple characteristics of the light emitting semiconductor devices and is configured to generate a signal corresponding to the selected characteristic. A controller is configured to control the light emitting semiconductor devices in response to the signal from the at least one detector. At least one of the multiple characteristics may be concentrated at an area of the array and the at least one detector may be located within the array at the area of the array to selectively monitor characteristic that is concentrated at the area of the array.

US Patent:

45583722, Dec 10, 1985

Filed:

Jan 19, 1984

Appl. No.:

6/571990

Inventors:

Robert G. Culter - Beaverton OR

Assignee:

Tektronix, Inc. - Beaverton OR

International Classification:

H04N 136

US Classification:

358264

Abstract:

A document scanner compensates for mechanical misalignment between a document and a photosensitive array by storing pixel information from the array and timing the output of such information in accordance with stored offset values which represent the mechanical misalignment for successive relative positions of the document and of the array.

US Patent:

42478693, Jan 27, 1981

Filed:

Apr 16, 1979

Appl. No.:

6/030261

Inventors:

Robert G. Culter - Seattle WA
Charles S. Osborne - Beaverton OR

Assignee:

Tektronix, Inc. - Beaverton OR

International Classification:

H04N 922

US Classification:

358 67

Abstract:

A beam-index display system wherein a control signal representative of the position of an electron beam within a beam-index cathode-ray tube is employed to control concurrently both the generation and selection of video drive signals for transmission to the beam-producing apparatus of the tube.

US Patent:

54575516, Oct 10, 1995

Filed:

Oct 8, 1993

Appl. No.:

8/133700

Inventors:

Robert G. Culter - Beaverton OR
Keith F. Kongslie - Beaverton OR

Assignee:

Planar Systems, Inc. - Beaverton OR

International Classification:

G02F 11347
G02F 1137
G09G 336

US Classification:

359 53

Abstract:

A display system (10) uses an electrically driven compensator cell (16) not only to improve the color quality of the display system but also to solve viewability problems stemming from the frame response effect. The display system includes a liquid crystal cell (14) patterned as a matrix display device and the compensator cell patterned in a row-only fashion. Corresponding row electrodes (26, 32) of the matrix display cell and the compensator cell are concurrently driven from the same row driver circuit (40). The cells are constructed and oriented relative to each other so as to cancel unwanted polarization state changes resulting from the frame response effect. The resulting light transmission through the display system in the OFF optical state is substantially at a minimum at all times during a frame period.

US Patent:

46174958, Oct 14, 1986

Filed:

Dec 24, 1984

Appl. No.:

6/685420

Inventors:

Robert G. Culter - Beaverton OR

Assignee:

Tektronix, Inc. - Beaverton OR

International Classification:

H01J 3126

US Classification:

315 10

Abstract:

A CRT calibration system is provided having a CRT with a display screen, an electron gun system, and a plurality of feedback elements. Each feedback element has an active area disposed proximately to the display screen at a preselected location such that an electron beam from the electron gun system can strike at least a portion of the active area. In response to being struck by electrons, each feedback element provides a feedback signal related to the area of the portion struck. The system also includes a detector system for detecting each feedback signal, and an integrating analog-to-analog converter which, in response, provides a digital signal related to the portion of the active area struck and thereby to the position of the electron beam relative to the particular feedback element interrogated. Also included is a control system for directing the electron beam to strike a sequence of portions of the active area for each feedback element, thereby evoking a corresponding sequence of feedback signals for each feedback element and a corresponding sequence of digital signals, enabling the control system to determine the location of each feedback element.

US Patent:

42310601, Oct 28, 1980

Filed:

Apr 16, 1979

Appl. No.:

6/030262

Inventors:

Robert G. Culter - Seattle WA

Assignee:

Tektronix, Inc. - Beaverton OR

International Classification:

H04N 924

US Classification:

358 69

Abstract:

A system and method for varying the phase of an index-related control signal produced within a beam-index display system in a manner compensating for the effects of cross-modulating the index signal with the video drive signals. Provision is made for monitoring the magnitudes of selected video drive signals and for shifting the phase of the control signal in a manner compensating for the effects of such drive signals on the index signal from which the control signal is derived.