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:
Jan. 28, 1997
Filed:
Apr. 16, 1993
Masatsugu Inoue, Fukaya, JP;
Kumio Fukuda, Fukaya, JP;
Nobuhiko Akoh, Gunma-ken, JP;
Tohru Takahashi, Kumagaya, JP;
Norio Shimizu, Fukaya, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A deflection device for use in a color cathode-ray tube, which has a pair of horizontal deflection coils for generating a pincushion-shaped horizontal deflection magnetic field, a pair of vertical deflection coils for generating a barrel-shaped vertical deflection magnetic field. The deflection device also having a pair of correction coils each of which being located at a distance of 10 mm or less from a plane containing the center and vertical axes of the device, a current flowing through each correction coil in synchronism with, and in a direction opposite to, the currents flowing in the horizontal deflection coils. The deflection device may also include a second pair of correcting coils, each of which being located adjacent to the first pair of correcting coils and arranged in a similar arrangement relative to the plane defined by the center and vertical axes.