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:
Dec. 05, 1995
Filed:
Oct. 21, 1993
Susumu Tsujihara, Osaka, JP;
Ikunori Inoue, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A convergence correction apparatus comprises: a scanning waveform generating section (6) for generating a scanning waveform in synchronization with a sync signal for scanning an electron beam in a cathode ray tube (8); an amplitude control section (7) for controlling a raster size according to a scanning waveform generated by the scanning waveform generating means (6) with receipt of a control signal; and a convergence correction waveform generating section (5) for generating a correction waveform for performing a convergence correction according to the scanning waveform and the control signal. Therefore, the apparatus can automatically follow signal sources having different input scanning frequencies and different aspect ratios thereby to obviate the need for complicated adjustment in each mode and remarkably reducing the time necessary for the adjustment.