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:
Apr. 30, 1991
Filed:
Jan. 26, 1989
Makoto Shiomi, Yokohama, JP;
Kosuke Ozeki, Yokohama, JP;
Michitaka Ohsawa, Fujisawa, JP;
Kuninori Matsumi, Fujisawa, JP;
Tadahiro Kawagishi, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Video Engineering, Inc., Kanagawa, JP;
Abstract
A digital convergence correcting device effecting convergence correction by using convergence correcting data stored in a memory which includes an address fixing device which, in the case where convergence correcting data are insufficient, reads out in succession the correcting data corresponding to the last horizontal scanning line for the portion lacking in the data so that the correcting data are used repeatedly, and which, in the case where convergence correcting data are excessive, only necessary convergence correcting data are used.