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. 16, 1997
Filed:
Aug. 09, 1993
Applicant:
Inventors:
Takayuki Oshiga, Narashino, JP;
Atsushi Itoh, Funabashi, JP;
Tsurumasa Matsushita, Funabashi, JP;
Tsutomu Sunaga, Narashino, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345157 ; 345145 ;
Abstract
In a sequence program constructed by forming a ladder diagram on a display screen, an element corresponding to a minimum unit of the ladder diagram is arranged by a symbol element and a character element. Inputting and amending operations of the ladder diagram are performed by a first cursor for designating each element and a second cursor for designating the character element of the element designated by this first cursor.