The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 11, 1990

Filed:

Aug. 28, 1989
Applicant:
Inventors:

Shigeo Takenaka, Fukaya, JP;

Eiji Kamohara, Fukaya, JP;

Takashi Nishimura, Fukaya, JP;

Assignee:

Kabushiki Kaisha Toshiba, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
358 66 ; 358 71 ; 358 64 ; 315368 ; 315375 ;
Abstract

A color cathode ray tube (CRT) arrangement utilizing only a single electron gun. A single electron beam, emitted from the single gun, is deflected in such a manner as to simulate the three electron beams that would normally be provided by three separate electron guns in a conventional CRT arrangement. The single electron beam is electrostatically deflected by electrodes according to a three stage cycle to simulate three electron beams directed in different directions. The simulated electron beams are deflected by a supplemental coil to correct for convergence error. The three electron beams are deflected by the main deflection coils of the tube's yoke and then pass through apertures of the tube's shadow mask to impinge on phosphor stripes of a screen formed on a face plate of the tube.


Find Patent Forward Citations

Takenaka, Shigeo. (1990). Color cathode ray tube (U.S. Patent No. 4977447). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4977447

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…