The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
This article describes a technique utilizing light frequency detection for automatic adjustment of color monitor convergence.
English (United States)
This text was extracted from a PDF file.
This is the abbreviated version, containing approximately
70% of the total text.
Page 1 of 1
Light Frequency Detection Method for Automatic Adjustment of Color
This article describes a technique utilizing light frequency detection for
automatic adjustment of color monitor convergence.
The adjustment of convergence is usually done manually. The adjustor looks
at the standard one inch test grid and checks to see that for a given line the red,
green and blue parts of the line are overlapping. Screws are turned on the
monitor's tube until the three color guns are aligned. Another method using line
densities to enhance the perception of misconvergence (color distortion) can be
used. Certain line densities interact to aggravate the misconvergence making it
easier to see. Some pattern of line densities can be used as a more sensitive
test pattern than the currently used grid pattern.
The method disclosed herein uses the relatively unpatterned, macroscopic
characteristics of the various line densities. The characteristic of
misconvergence using these line densities is not a color pattern but a more
macroscopic color presence. In other words, the presence of a single over-riding
color instead of misonvergent color patterns is the diagnostic characteristic. A
chromaticity meter for high frequency detection is required. A particular color
noted at a particular line density would indicate what adjustment is necessary (i.e., move the green gun). detection of color frequency could be accomplished
with a larger monitor area with less reliance on abs...