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.
Patent No.:
Date of Patent:
May. 21, 1996
Filed:
Nov. 23, 1994
Jacobus H Jamar, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
Display tube comprising a deflection unit provided with a (twist) correction device which includes an annular (twist) correction coil surrounding the tube neck, which coil, when energized by a circuit providing a (twist) correction current, generates a magnetic correction field in the axial direction of the display tube. According to the invention, the device also provides a 4-pole y field for correcting (twist) errors in the center of the display screen. This 4-pole y field can be generated by causing the turns of the annular coil to follow a path having four predetermined corrugations alternately facing the display screen and the electron gun.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile