Television – Monitoring – testing – or measuring
Patent
1992-07-17
1994-05-10
Oberley, Alvin E.
Television
Monitoring, testing, or measuring
345145, 345904, 348655, H04N 973, H04N 1702
Patent
active
053112946
ABSTRACT:
Apparatus for setting the color point of a color display device comprises a video signal generator for generating an image on the display device and a color analyzer for measuring the chromaticity of the image to produce digital coordinates corresponding to the color point of the image on a chromaticity reference chart. The apparatus further comprises a computer system connected to the color analyzer. The computer system includes interface means for reading the digital coordinates from the color analyzer, display means for displaying a cursor at a point corresponding to the coordinates within a graphical representation of the reference chart, and processor means for moving the cursor within the graphical representation in response to a change in the coordinates read from the color analyzer. The apparatus advantageously permits rapid adjustment of the color point of a display device to a desired value with a high level of measurement repeatability. Any recalibration of the apparatus can be performed by adjusting a set of digital values stored in the computer system.
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patent: 5138367 (1992-08-01), Okamoto
A Reference Monitor for White Balance Adjustment, Honijo et al.; SMPTE Journal, vol. 89, Oct. 1980, pp. 727-730.
Cromer Campbell
Knox Richard I.
Farnandez Kara A.
International Business Machines - Corporation
Kinnaman, Jr. W. A.
Oberley Alvin E.
Walker Mark S.
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