1
Ronald S Cok, Mark V Hettel: Emissive display with luminance feedback from a representative pixel. Eastman Kodak Company, Thomas H Close, November 20, 2001: US06320325 (199 worldwide citation)

A digital image display device, having a substrate; a light emitting display formed on the substrate, the display having an array of light emitting pixels; a representative light emitting pixel formed on the substrate; a photosensor located on the display device and optically coupled to the represen ...


2
Andrew D Arnold, Ronald S Cok: OLED display with aging compensation. Eastman Kodak Company, Andrew J Anderson, February 7, 2006: US06995519 (183 worldwide citation)

An organic light emitting diode (OLED) display includes an array of OLEDs, each OLED having two terminals; a voltage sensing circuit for each OLED including a transistor in each circuit connected to one of the terminals of a corresponding OLED for sensing the voltage across the OLED to produce feedb ...


3
Ronald S Cok, Thomas Niertit, Andrew D Arnold: OLED display with aging compensation. Eastman Kodak Company, David A Novais, Andrew J Anderson, Stephen H Shaw, January 22, 2008: US07321348 (171 worldwide citation)

An organic light-emitting diode (OLED) display having addressable pixels on a substrate, the pixels having performance attributes, and a control circuit for controlling the pixels of the display device, includes one or more OLED pixels; an OLED reference pixel located on a substrate and connected to ...


4
Ronald S Cok, Rodney D Feldman, John C Burtis: Broad color gamut display. Eastman Kodak Company, Thomas H Close, May 27, 2003: US06570584 (162 worldwide citation)

A digital color image display device, includes a plurality of pixels, each pixel having a plurality of subpixels with at least one of the subpixels producing a color other than red, green or blue.


5
Paul P Lee, Ronald S Cok: Flat-panel light emitting pixel with luminance feedback. Eastman Kodak Company, Thomas H Close, April 13, 2004: US06720942 (149 worldwide citation)

An image display includes an addressable image display pixel, having a substrate; a light emitter formed on the substrate; a photo-sensor formed on the substrate and optically coupled to the light emitter to detect light emitted by the light emitter to generate a feedback voltage signal in response ...


6
John R Fredlund, Ronald S Cok: Method of combining two digitally generated images. Eastman Kodak Company, Frank Pincelli, November 16, 1999: US05986671 (120 worldwide citation)

A method of combining at least one captured generated digital image and a prestored digital image. The method includes providing a customer generated image in digital form; automatically determining the aspect ratio of the selected customer generated image; providing a plurality of prestored digital ...


7
Ronald S Cok: Method of aging compensation in an OLED display. Eastman Kodak Company, Andrew J Anderson, May 29, 2007: US07224332 (119 worldwide citation)

A method for controlling aging compensation in an OLED display having one or more light emitting elements includes the steps of periodically measuring the change in display output to calculate a correction signal; restricting the change in the correction signal at each period; and applying the corre ...


8
Michael J Murdoch, Michael E Miller, Ronald S Cok: Method for transforming three color input signals to four or more output signals for a color display. Eastman Kodak Company, Thomas H Close, May 24, 2005: US06897876 (113 worldwide citation)

A method for transforming three color input signals (R, G, B) corresponding to three gamut defining color primaries to four color output signals (R′, G′, B′, W) corresponding to the gamut defining color primaries and one additional color primary W for driving a display having a white point different ...


9
Ronald S Cok: Dynamic controller for active-matrix displays. Eastman Kodak Company, Andrew J Anderson, Thomas H Close, January 16, 2007: US07164417 (113 worldwide citation)

A dynamic controller for a light emitting active-matrix display, the display being responsive to code values for producing a light output, including: photosensor located on the display for sensing the light output from the display and generating a feedback signal representative thereof; a feedback s ...


10
Ronald S Cok: OLED display with control. Eastman Kodak Company, Andrew J Anderson, August 8, 2006: US07088051 (111 worldwide citation)

An OLED device and control circuit, comprising: a) an OLED responsive to a drive signal; b) a drive circuit connected to the OLED responsive to a charge signal for controlling the drive signal; c) one or more variable charge storage capacitors providing the charge signal; d) a deposition circuit for ...