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:
Oct. 08, 2019
Filed:
Dec. 06, 2016
Hitachi, Ltd., Chiyoda ku, Tokyo, JP;
Tadanobu Toba, Tokyo, JP;
Takumi Uezono, Tokyo, JP;
Yusuke Kanno, Tokyo, JP;
Masahiro Shiraishi, Tokyo, JP;
Hideo Harada, Tokyo, JP;
Satoru Akasaka, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
The present invention includes a drawing data generating unit, a variation pattern that varies at regular intervals to be displayed, a display unit that displays drawing data, and a comparator that compares whether input signals are coincident, and the drawing data generating unit includes a receiver that receives data from a higher-level device, a drawing control unit that converts the data received from the higher-level device to drawing data, and a drawing memory that stores the drawing data. The drawing data generating unit and the variation pattern are redundantly configured, and the variation pattern is input to the drawing data generating unit. One output signal of the drawing data generating unit regarding drawing data including the variation pattern is transmitted to the display unit, a plurality of output signals from the drawing data generating unit are input to the comparator, and the comparator outputs a comparison result as a detection signal outside. This improves safety and reliability when severe safety criteria are required such as in a case of monitor-display in industrial plant equipment.