DE3824588A1 - Verfahren zum fortlaufenden und automatischen ueberwachen des elektrischen wirkungsgrades und der fehlerfreien steuerung einer fluessig-kristall-anzeigevorrichtung - Google Patents

Verfahren zum fortlaufenden und automatischen ueberwachen des elektrischen wirkungsgrades und der fehlerfreien steuerung einer fluessig-kristall-anzeigevorrichtung

Info

Publication number
DE3824588A1
DE3824588A1 DE3824588A DE3824588A DE3824588A1 DE 3824588 A1 DE3824588 A1 DE 3824588A1 DE 3824588 A DE3824588 A DE 3824588A DE 3824588 A DE3824588 A DE 3824588A DE 3824588 A1 DE3824588 A1 DE 3824588A1
Authority
DE
Germany
Prior art keywords
segment
display device
supply
time
liquid crystal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE3824588A
Other languages
German (de)
English (en)
Other versions
DE3824588C2 (en, 2012
Inventor
Francesco Principe
Vito Gargano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nuovo Pignone Holding SpA
Nuovo Pignone SpA
Original Assignee
Nuovopignone Industrie Meccaniche e Fonderia SpA
Nuovo Pignone SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nuovopignone Industrie Meccaniche e Fonderia SpA, Nuovo Pignone SpA filed Critical Nuovopignone Industrie Meccaniche e Fonderia SpA
Publication of DE3824588A1 publication Critical patent/DE3824588A1/de
Application granted granted Critical
Publication of DE3824588C2 publication Critical patent/DE3824588C2/de
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
    • G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/16—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source
    • G09G3/18—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Computer Hardware Design (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
DE3824588A 1987-07-24 1988-07-19 Verfahren zum fortlaufenden und automatischen ueberwachen des elektrischen wirkungsgrades und der fehlerfreien steuerung einer fluessig-kristall-anzeigevorrichtung Granted DE3824588A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT21429/87A IT1222120B (it) 1987-07-24 1987-07-24 Procedimento per il controllo continuo ed automatico dell' efficienza elettrica e della congruenza del pilotaggio in un indicatore a cristalli liquidi

Publications (2)

Publication Number Publication Date
DE3824588A1 true DE3824588A1 (de) 1989-02-02
DE3824588C2 DE3824588C2 (en, 2012) 1992-06-04

Family

ID=11181667

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3824588A Granted DE3824588A1 (de) 1987-07-24 1988-07-19 Verfahren zum fortlaufenden und automatischen ueberwachen des elektrischen wirkungsgrades und der fehlerfreien steuerung einer fluessig-kristall-anzeigevorrichtung

Country Status (7)

Country Link
US (1) US4970503A (en, 2012)
CA (1) CA1308501C (en, 2012)
DE (1) DE3824588A1 (en, 2012)
FR (1) FR2618562B1 (en, 2012)
GB (1) GB2207540B (en, 2012)
IT (1) IT1222120B (en, 2012)
NL (1) NL193598C (en, 2012)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5160920A (en) * 1990-12-07 1992-11-03 International Business Machines Corporation Fail safe display for shelf labels
GB9308294D0 (en) * 1993-04-22 1993-06-09 Gilbarco Ltd Error detection apparatus for an electro-optic display
DE10316901A1 (de) * 2003-04-12 2004-10-28 Roche Diagnostics Gmbh Kontrollsystem und Kontrollverfahren zum Überprüfen der Funktion von LCD-Anzeigen
AT504988B1 (de) * 2007-03-14 2010-07-15 Lunatone Ind Elektronik Gmbh Schaltung und verfahren zur spannungsversorgung von elektrolumineszenz-folien
US20110109602A1 (en) * 2008-07-16 2011-05-12 Freescale Semiconductor, Inc. Fault detection apparatus for alphanumeric display system and method of detecting a fault
FR2953972B1 (fr) * 2009-12-16 2018-11-02 Aptiv Technologies Limited Dispositif et methode de diagnostic de la connexion d'un ecran d'affichage
JPWO2015132908A1 (ja) * 2014-03-05 2017-03-30 パイオニア株式会社 表示制御装置
JP7371455B2 (ja) * 2019-11-21 2023-10-31 セイコーエプソン株式会社 駆動回路、表示モジュール、及び移動体
JP7319183B2 (ja) * 2019-12-12 2023-08-01 スタンレー電気株式会社 液晶装置及び液晶装置の検査方法
US11428752B2 (en) 2020-09-16 2022-08-30 Landis+Gyr Innovations, Inc. In-situ testing of electric double layer capacitors in electric meters

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006996A2 (de) * 1978-07-18 1980-01-23 Mettler-Toledo AG Flüssigkristall-Segmentanzeige und Verfahren zu ihrer Ueberwachung
DE3032078A1 (de) * 1980-08-26 1982-04-08 Anton Koukal Industrieelektronik, 7321 Zell Ueberwachungseinrichtung fuer eine mehrstellige, zeitmultiplexgesteuerte ziffern-anzeigevorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH627575A5 (de) * 1978-06-09 1982-01-15 Mettler Instrumente Ag Multisegment-fluessigkristall-anzeige mit einer funktionsueberwachungsschaltung.
JPS5559347A (en) * 1978-10-30 1980-05-02 Hitachi Ltd Test system for liquid crystal display element
DE3026848A1 (de) * 1980-07-16 1982-02-04 Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen Ueberwachungsschaltung zur kontrolle der anschluesse von lcd-anzeigen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006996A2 (de) * 1978-07-18 1980-01-23 Mettler-Toledo AG Flüssigkristall-Segmentanzeige und Verfahren zu ihrer Ueberwachung
DE3032078A1 (de) * 1980-08-26 1982-04-08 Anton Koukal Industrieelektronik, 7321 Zell Ueberwachungseinrichtung fuer eine mehrstellige, zeitmultiplexgesteuerte ziffern-anzeigevorrichtung

Also Published As

Publication number Publication date
FR2618562B1 (fr) 1993-07-02
CA1308501C (en) 1992-10-06
DE3824588C2 (en, 2012) 1992-06-04
FR2618562A1 (fr) 1989-01-27
GB2207540A (en) 1989-02-01
IT8721429A0 (it) 1987-07-24
NL193598C (nl) 2000-03-02
GB2207540B (en) 1991-05-08
US4970503A (en) 1990-11-13
NL193598B (nl) 1999-11-01
NL8801847A (nl) 1989-02-16
IT1222120B (it) 1990-08-31
GB8817429D0 (en) 1988-08-24

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee