FR2298836A1 - Electronic seven segment display with checking system - uses seven double segments with parallel drive converters connected to comparator - Google Patents

Electronic seven segment display with checking system - uses seven double segments with parallel drive converters connected to comparator

Info

Publication number
FR2298836A1
FR2298836A1 FR7601255A FR7601255A FR2298836A1 FR 2298836 A1 FR2298836 A1 FR 2298836A1 FR 7601255 A FR7601255 A FR 7601255A FR 7601255 A FR7601255 A FR 7601255A FR 2298836 A1 FR2298836 A1 FR 2298836A1
Authority
FR
France
Prior art keywords
bit
display
comparator
converters
electronic
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.)
Withdrawn
Application number
FR7601255A
Other languages
French (fr)
Inventor
Walter Berg
Ernst Kuhnle
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.)
Bizerba SE and Co KG
Original Assignee
Bizerba Werke Wilhelm Kraut GmbH and KG
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 Bizerba Werke Wilhelm Kraut GmbH and KG filed Critical Bizerba Werke Wilhelm Kraut GmbH and KG
Publication of FR2298836A1 publication Critical patent/FR2298836A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134327—Segmented, e.g. alpha numeric display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1608—Error detection by comparing the output signals of redundant hardware
    • G06F11/1616—Error detection by comparing the output signals of redundant hardware where the redundant component is an I/O device or an adapter therefor
    • G06F11/162—Displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • Computer Hardware Design (AREA)
  • Geometry (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Quality & Reliability (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Digital Computer Display Output (AREA)

Abstract

A seven segment numerical display, suitable for liquid crystal elements, is designed to provide some indication of erroneous display conditions. Each segment (2) of the display element is composed of two elements side-by-side. Seven bit words for driving the display are generated by two BLO/7 segment code converters. Identical bit positions from each of the converters are coupled to a pair of display elementS. Inputs to the converters are provided by a 5 bit shift register, with the fifth bit being an odd parity checking bit. The system is completed by seven-two bit comparators coupled to each bit position of the converter output. A check on a individual comparator output as compared with the actual display enables the source of error to be located.
FR7601255A 1975-01-24 1976-01-19 Electronic seven segment display with checking system - uses seven double segments with parallel drive converters connected to comparator Withdrawn FR2298836A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752502794 DE2502794A1 (en) 1975-01-24 1975-01-24 ELECTRONIC NUMERAL DISPLAY

Publications (1)

Publication Number Publication Date
FR2298836A1 true FR2298836A1 (en) 1976-08-20

Family

ID=5937178

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7601255A Withdrawn FR2298836A1 (en) 1975-01-24 1976-01-19 Electronic seven segment display with checking system - uses seven double segments with parallel drive converters connected to comparator

Country Status (4)

Country Link
JP (1) JPS5193826A (en)
DE (1) DE2502794A1 (en)
FR (1) FR2298836A1 (en)
NL (1) NL7514067A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487099A1 (en) * 1980-07-16 1982-01-22 Kienzle Apparate Gmbh MONITORING CIRCUIT FOR THE CONTROL OF LIQUID CRYSTAL DISPLAY CONNECTIONS
FR2521753A1 (en) * 1982-02-17 1983-08-19 Gorgy Timing Seven-segment LED display esp. for electronic clock - has additional point diodes at corners of display to improve readability
WO1985002931A1 (en) * 1983-12-23 1985-07-04 Hughes Aircraft Company Liquid crystal pixel driver circuit and matrix display

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2756048C2 (en) * 1976-12-17 1984-07-05 Sharp K.K., Osaka Circuit arrangement for operating an electrochromic display device
DE2715446A1 (en) * 1977-04-06 1978-10-12 Siemens Ag Liquid crystal display device - with control modules integrated in semiconductor cell wall requiring fewer connections
DE2951584A1 (en) * 1979-12-21 1981-07-16 Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen METHOD AND ARRANGEMENT FOR CONTROLLING, MONITORING AND CONTROLLING THE OPERATION OF A MOST PASSIVE DATA DISPLAY, ESPECIALLY E.g. A LIQUID CRYSTAL DISPLAY (LCD DISPLAY)
JP7206953B2 (en) * 2019-01-28 2023-01-18 セイコーエプソン株式会社 Liquid crystal devices, liquid crystal drivers, electronic devices and moving bodies

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487099A1 (en) * 1980-07-16 1982-01-22 Kienzle Apparate Gmbh MONITORING CIRCUIT FOR THE CONTROL OF LIQUID CRYSTAL DISPLAY CONNECTIONS
FR2521753A1 (en) * 1982-02-17 1983-08-19 Gorgy Timing Seven-segment LED display esp. for electronic clock - has additional point diodes at corners of display to improve readability
WO1985002931A1 (en) * 1983-12-23 1985-07-04 Hughes Aircraft Company Liquid crystal pixel driver circuit and matrix display

Also Published As

Publication number Publication date
DE2502794A1 (en) 1976-07-29
NL7514067A (en) 1976-07-27
JPS5193826A (en) 1976-08-17

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Legal Events

Date Code Title Description
RE Withdrawal of published application