Brian J Levey

US Patent:

7593105, Sep 22, 2009

Filed:

Nov 16, 2005

Appl. No.:

11/281152

Inventors:

Brian Levey - Yardley PA, US
Colman Shannon - Lawrenceville NJ, US
David Slocum - Yardley PA, US

Assignee:

Datacolor Holding AG - Luzen

International Classification:

G01N 21/25

US Classification:

356419

Abstract:

A tristimulus colorimeter on a single semiconductor chip having at least three detectors, each detector being coated by colorant filters, each filter having at least one layer and at least one filter having a double layer is provided. The colorimeter determines CIE tristimulus values of an incident light from inputs to the filters and detectors. Colorimeters having integral dye filters may be constructed on a single silicon chip embodying all the detectors and electronics, coated over each detector by a deposited filter layer. Colorants may be directly deposited on the detectors, rather than using a plastic substrate for a filter.

US Patent:

8395638, Mar 12, 2013

Filed:

Nov 25, 2008

Appl. No.:

12/323432

Inventors:

Colman Shannon - Lawrenceville NJ, US
Cormic K. Merle - Rochester NY, US
Michael H. Brill - Kingston NJ, US
Brian Levey - Yardley PA, US

Assignee:

Datacolor Holding AG - Lucerne

International Classification:

G09G 5/02

US Classification:

345589, 348180

Abstract:

One embodiment of a method for calibrating a test color measurement device in conjunction with an emissive display includes measuring initial spectral sensitivities of at least four channels of the test color measurement device, linearly regressing the spectral sensitivities to a least-square best fit to CIE color matching functions, measuring CIE tristimulus values of test colors on the display using a reference color measurement device, measuring the CIE tristimulus values on the display using the test color measurement device, transforming the CIE tristimulus values measured by the test color measurement device to CIE tristimulus values that would have been measured by the reference color measurement device, using a nonlinear function with variable fitting coefficients, and storing initial fitting coefficient values that provide a least-square best fit of the CIE tristimulus values measured by the test color measurement device and the CIE tristimulus values measured by the reference color measurement device.

US Patent:

20050248786, Nov 10, 2005

Filed:

Jun 28, 2004

Appl. No.:

10/878278

Inventors:

C. Tobie - Mount Vernon ME, US
Brian Levey - Yardley PA, US
Kiran Chintanippu - Levittown PA, US

International Classification:

H04N001/56
H04N001/60

US Classification:

358001900, 358504000, 358518000

Abstract:

A method and system for calibrating color rendering devices includes determining a model-specific Digital Target for a first reference color rendering device and a non-CIE color measuring device combination, and implementing the determined model-specific Digital Target for calibrating color rendering devices having substantially similar rendering characteristics as the first reference color rendering device.

US Patent:

20070285515, Dec 13, 2007

Filed:

Jun 8, 2007

Appl. No.:

11/760563

Inventors:

MARK HUNTER - Cary NC, US
Brian Levey - Yardley PA, US

International Classification:

H04N 17/02

US Classification:

348189

Abstract:

In one embodiment, the present invention is a method and apparatus for calibrating video signals. One embodiment of a method for calibrating chrominance/luminance of a video signal for display on a display device includes receiving an uncalibrated video signal from a video source, calculating a correction necessary to calibrate the color of the uncalibrated video signal, using stored correction data, and applying the correction to produce a calibrated video signal in substantially real time.