Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1988-06-03
1989-09-26
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
358106, G01R 3102
Patent
active
048703575
ABSTRACT:
The present invention is an error detection system for liquid crystal display (LCD) devices. The system comprises a photo-scanning device coupled to a computer and a LCD display driver. Faulty LCD cells are detected by using the photo-scanner to produce two images. The first image is produced by displaying a predetermined pattern on the LCD device. This pattern is inverted to produce the second image. By analyzing these two images, faulty LCD cells are located. The results of the analysis give the location of the faulty LCD cells.
REFERENCES:
patent: 4589139 (1986-05-01), Hada et al.
Foster Nigel
Young Steve
Apple Computer Inc.
Eisenzopf Reinhard J.
Urban Edward F.
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