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:
Apr. 04, 1989
Filed:
Oct. 27, 1987
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Abstract
A color picture tube apparatus comprises a color picture tube including an envelope having a phosphor screen excited by a plurality of electron beams, and deflection means generating horizontal deflection field and barrel type vertical deflection field for the beams, including non-linear magnetic field correction means generating an additional pin-cushion type magnetic field in the vertical field to have preferably convergence characteristics such that vertical direction coma errors can be appropriately corrected throughout every portion of the vertical axis on the screen, whereby high-definition color images can be obtained thereon.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile