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. 28, 1999
Filed:
Oct. 23, 1997
Applicant:
Inventor:
Koichi Ara, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ; H01J / ; H04N / ;
U.S. Cl.
CPC ...
31536811 ; 31536812 ;
Abstract
A convergence adjusting method and a convergence adjusting circuit, for improving the preciseness of adjustment while reducing a time required for the adjustment and for avoiding an occurrence of non-continuity distortion on a display screen. An adjustment state flag memory 8 stores flags indicative of whether or not the adjustment in respective adjustment points is completed. The convergence adjusting method includes sequentially performing convergence adjustment at a plurality of adjusting points set on the display screen equidistantly and setting new adjusting points on the display screen equidistantly with a pitch smaller than a pitch of the adjusting points.