Title:
表示装置
Document Type and Number:
Japanese Patent JP6554048
Kind Code:
B2
Abstract:
The present invention includes a drawing data generating unit (3), a variation pattern (9) that varies at regular intervals to be displayed, a display unit (2) that displays drawing data, and a comparator that compares whether input signals are coincident, and the drawing data generating unit (3) includes a receiver (5) that receives data from a higher-level device, a drawing control unit (7) that converts the data received from the higher-level device to drawing data, and a drawing memory (8) that stores the drawing data. The drawing data generating unit (3) and the variation pattern (9) are redundantly configured, and the variation pattern (9) is input to the drawing data generating unit (3). One output signal of the drawing data generating unit (3) regarding drawing data including the variation pattern (9) is transmitted to the display unit (2), a plurality of output signals from the drawing data generating unit (3) 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.
Inventors:
Tadanobu Toba
Kamizono Takumi
Yusuke Kanno
Masahiro Shiraishi
Hideo Harada
Akasaka Satoru
Kamizono Takumi
Yusuke Kanno
Masahiro Shiraishi
Hideo Harada
Akasaka Satoru
Application Number:
JP2016037046A
Publication Date:
July 31, 2019
Filing Date:
February 29, 2016
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G09G5/00; G06F3/048; G06F3/14; G09G5/36; G09G5/38; G09G5/393; G09G5/395
Domestic Patent References:
| JP2012226683A | ||||
| JP2012027780A | ||||
| JP2010003092A | ||||
| JP2007108166A | ||||
| JP6077546A | ||||
| JP5167923A |
Attorney, Agent or Firm:
Aoritsu patent business corporation