Color uniformity system

Abstract

A color uniformity system for correcting color uniformity problems that exist with today's display devices. The inventive device includes a device to measure the color uniformity of the display device and software that uses the information from the measuring system to correct the color uniformity problem on the display device. Probe assembly has so many probes on it that is placed on the display and captures the color information on the display. Measuring assembly measures the color of the signal that comes from the probe assembly. Processor uses the color information from the measuring assembly and also communicates with the host system where the display device is driven from. Software resides on the host system and uses the stored color information to correct the color data that is applied to display device. Hardware unit that resides in the display device and performs color calculations if they are not done in the software.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Various other objects, features and attendant advantages of the present invention will become fully appreciated as the same becomes better understood when considered in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the several views, and wherein:

FIG. 1 is Probe Assembly.

FIG. 2 is Probe Assembly top view.

FIG. 3 is System Block Diagram.

FIG. 4 is Multiplexer.

FIG. 5 is Characterization.

FIG. 6 is System operation.

Claims

1. A color uniformity system comprising: a probe unit for measuring the color parameters of the video signal displayed on the screen; a processor unit that calculates color values and communicates with the host computer; a storage unit for storing color values.

2. A system in accordance with claim 1, wherein the probe unit has plurality of probes for detecting and measuring video signal on the display device at plural locations.

3. A system in accordance with claim 1, wherein the probe unit is a robot arm with single probe and moves on the surface of the display device to detect and measure the color of the video signal at plurality of locations to cover the complete screen.

4. A system in accordance with claim 1, wherein the processor unit comprises of a microcontroller with embedded software.

5. A system in accordance with claim 1, wherein the processor unit calculates tri-stimulus values of the color displayed on the screen of the display device.

6. A system in accordance with claim 1, wherein the host computer is a stand alone computer.

7. A system in accordance with claim 1, wherein the communication between the host computer and the processor unit is accomplished by using an existing communication lines available such as Universal Serial Bus (USB).

8. A system in accordance with claim 1, wherein the host computer is a handheld device.

9. A system in accordance with claim 1, wherein the communication between the processor unit and the handheld device is accomplished by available communication protocol on the handheld unit.

10. A system in accordance with claim 1, wherein the processor unit is embedded in the handheld device so that the probe unit directly communicates with the processor unit in the handheld unit.