Television – Monitoring – testing – or measuring
Reexamination Certificate
1998-12-10
2001-12-11
Eisenzopf, Reinhard J. (Department: 2614)
Television
Monitoring, testing, or measuring
C348S182000, C348S191000, C348S655000
Reexamination Certificate
active
06330026
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a color testing system, and more particularly, to a color testing system for testing color output of a display device.
2. Description of the Prior Art
During the manufacturing process of color display devices, a color analyzer is used to test and calibrate intensity deviations of their color output.
A typical color analyzer has a reading probe with a round surface of 2-cm in diameter for receiving the color output. The most popular way to test color intensity deviations is having an operator manually move the reading probe across the screen area of the display device for the color analyzer to receive color output from the display device. There are two drawbacks in such testing operation. First, it is difficult for the operator to maintain the movement of the reading probe at a constant speed. Therefore, when the probe is performing periodical readings during movement, the same screen area may be read twice or a certain screen area may be inadvertently skipped thereby affecting the quality of test. Second, testing a 15-inch screen requires roughly 200 readings and is therefore very costly in terms of time and labor.
SUMMARY OF THE INVENTION
It is therefore a primary objective of the present invention to provide a color testing system for simplifying a color test process to solve the above mentioned problems.
Briefly, in a preferred embodiment, the present invention provides a color testing system for testing intensities of color output from a screen of a display device comprising:
a reading probe for reading color output from the screen of the display device;
a display equipment; and
a color analyzer connected to the reading probe for analyzing the intensities of the color output from the screen of the display device; wherein when testing the display device, the color analyzer displays a screen graph and a cursor on the display equipment corresponding to a next testing area on the screen according to a predetermined test track, the cursor will direct an operator to move the reading probe on the screen so that the reading probe can properly read the color output of each testing area along the test track on the screen.
It is an advantage of the present invention that the color testing system can define a test track based on test results of a plurality of display devices of the same model so as to greatly reduce the number of testing areas required to test a display device without adversely affecting the detection of defective testing areas.
Another advantage of the present invention is that the moveable cursor is used to display the position of each next testing area so that the operator is directed to move the reading probe to correct testing positions at a suitable rate to read the color intensity output of each testing area on the screen of the display device.
These and other objects and the advantages of the present invention will no doubt become obvious to those of ordinary skill in the art after having read the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings.
REFERENCES:
patent: 5298993 (1994-03-01), Edgar et al.
patent: 5311294 (1994-05-01), Cromer et al.
patent: 5483259 (1996-01-01), Sachs
patent: 5570108 (1996-10-01), McLaughlin et al.
patent: 5739809 (1998-04-01), McLaughlin et al.
patent: 6018361 (2000-01-01), Fujii et al.
patent: 6140809 (2000-10-01), Doi
Acer Technologies Sdn. Bhd
Desir Jean W.
Eisenzopf Reinhard J.
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