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.

Date of Patent:
Jun. 06, 1989

Filed:

Oct. 02, 1987
Applicant:
Inventors:

Mikio Nishiyama, Kanagawa, JP;

Taizo Akimoto, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358183 ; 358111 ; 358140 ; 358153 ;
Abstract

A controller for a CRT display apparatus which is capable of displaying an image selectively either in an interlace mode or in a non-interlace mode and which has a function for displaying the image in raster erase mode. The controller has a field detection circuit capable of judging whether the present mode is the interlace mode or the non-interlace mode, and a mode setting circuit allowing the CRT display apparatus to display the image in the raster erase mode which is changed so as to match the interlace display mode or in the non-interlace display mode switched over therebetween in accordance with the result of judgment conducted by said field detection circuit. In consequence, raster erase matching with the selected display mode can be selected and effected automatically.


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