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:
Jun. 26, 2001
Filed:
Mar. 07, 2000
Toshiya Takagishi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention is intended to provide a deflection apparatus which is able to effect an excellent convergence correction by improving an interference between a coma aberration correction coil and a convergence correction coil. In the deflection apparatus according to the present invention, a circuit comprising a coma aberration correction coil, resistors and a reactance means is connected to a vertical deflection coil in series. In the above-mentioned circuit, coil pair comprising the coma aberration correction coil are connected in series. One end of the reactance means is connected to a junction, i.e. middle point of the coil pair. One ends of the respective resistors are connected across the respective ends of the coil pair connected in series. Remaining one ends of those resistors are connected to a remaining one end of the reactance means. The above-described circuit further includes convergence correction coil attached thereto so as to have the coma aberration correction coils and the cores in common. Although an induced current is generated in the coil pair by an interference between the coma aberration correction coils and the convergence correction coil, the reactance means acts on the deflection apparatus so as to reduce the resultant induced current.