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 relates to multiple-beam cathode ray tubes. In particular, such such a tube which is capable of displaying characters of variable height is shown above.
English (United States)
This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
100% of the total text.
Page 1 of 2
Variable Character Height In Multiple Beam Cathode Ray Tube
This article relates to multiple-beam cathode ray tubes. In particular, such
such a tube which is capable of displaying characters of variable height is shown
Normally, multiple-beam cathode ray tubes have been designed to write and
display characters of a single predetermined height. Components of such
cathode ray tubes have a deflection yoke 10 and a focusing lens 12. With the
final accelerating electrode 18 of the tube on the left side, a pair of rotation-free
electron lenses 14 and 16 are positioned between the final accelerating electrode
and the main focusing lens 12.
The two lenses 14 and 16 provide electrical control of the character height as
illustrated by solid lines depicting a small character height and dashed lines
depicting a larger character height. The strength of the focusing lens would also
require adjustment when the character size is changed.
Page 2 of 2
[This page contains 2 pictures or other non-text objects]