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:
Sep. 08, 1987
Filed:
Nov. 04, 1985
Norio Imaizumi, Gunma, JP;
Sanyo Electric Co., Osaka, JP;
Abstract
A vertical deflection circuit for a CRT tube, with a so-called Mirror integration circuit, has an integration arrangement with a resistor and a capacitor, and a first amplifier for amplifying saw-tooth wave by the integration arrangement with a deflection coil coupled with output of the amplifier. A first feedback path is located between the deflection coil and the capacitor has been improved by a second feedback path between the deflection coil and input of the first amplifier. The second feedback path provides the sum of the parabolic voltage at the end of the deflection coil which is grounded through a second capacitor and a second resistor, and the saw-tooth wave voltage responsive to the current in the deflection coil to the first amplifier. The second feedback path provides the so-called S-shaped compensation on a screen so that a picture distortion, due to a non-arc face of a screen at peripheral portions, is compensated.