logo

For the Inventor, By the Inventor

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.:

US 6380699 B1

PDFFull Text
Date of Patent:
Apr. 30, 2002

Filed:

Dec. 04, 2000

Color display tube device

Applicant:
Inventors:

Shunichi Miyazaki, Osaka, JP;

Etsuji Tagami, Osaka, JP;

Assignee:

Matsushita Electric Industrial Co., Ltd., Osaka, JP;

Attorney:

Merchant & Gould P.C.

Primary Examiner:

Don Wong

Assistant Examiner:

Wilson Lee

Int. Cl.
CPC ...
H01F 1/00 ;
U.S. Cl.
CPC ...
H01F 1/00 ;
Abstract

A first magnet that generates a magnetic field having the same polarity as that generated by a vertical deflection coil during a deflection toward the upper side is provided on a phosphor screen side of the deflection coil and above a horizontal axis. A second magnet that generates a magnetic field having the same polarity as that generated by the vertical deflection coil during a deflection toward the lower side is provided on a phosphor screen side of the deflection coil and below the horizontal axis. A third magnet that generates a magnetic field having the opposite polarity to that generated by the vertical deflection coil during the deflection toward the upper side is provided on the phosphor screen side with respect to the first and second magnets and above the horizontal axis. A fourth magnet that generates a magnetic field having the opposite polarity to that generated by the vertical deflection coil during the deflection toward the lower side is provided on the phosphor screen side with respect to the first and second magnets and below the horizontal axis. Consequently, an upper and lower pincushion distortion and an upper and lower inner pincushion distortion can be corrected in a simple and low-cost manner.

Find Patent Forward Citations

Miyazaki, Shunichi. (2002). Color display tube device (U.S. Patent No. 6380699). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6380699

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

Loading…