SE8104364L - MONITORING CONNECTION FOR CHECKING THE CONNECTIONS OF LCD INDICATORS - Google Patents

MONITORING CONNECTION FOR CHECKING THE CONNECTIONS OF LCD INDICATORS

Info

Publication number
SE8104364L
SE8104364L SE8104364A SE8104364A SE8104364L SE 8104364 L SE8104364 L SE 8104364L SE 8104364 A SE8104364 A SE 8104364A SE 8104364 A SE8104364 A SE 8104364A SE 8104364 L SE8104364 L SE 8104364L
Authority
SE
Sweden
Prior art keywords
checking
connections
segment
condenser
lead
Prior art date
Application number
SE8104364A
Other languages
Swedish (sv)
Other versions
SE443060B (en
Inventor
J Adams
Original Assignee
Kienzle Apparate Gmbh
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 Kienzle Apparate Gmbh filed Critical Kienzle Apparate Gmbh
Publication of SE8104364L publication Critical patent/SE8104364L/en
Publication of SE443060B publication Critical patent/SE443060B/en

Links

Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1807—Arrangements for adjusting, eliminating or compensating reactive power in networks using series compensators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1885—Arrangements for adjusting, eliminating or compensating reactive power in networks using rotating means, e.g. synchronous generators
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0266—Marks, test patterns or identification means
    • H05K1/0268—Marks, test patterns or identification means for electrical inspection or testing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

In a monitoring circuit for checking the connections of liquid crystal displays and their segment drivers, each segment (3) is connected, e.g. via a conducting elastomer (4), through first lead (5) directly to the driver circuit for normal control and simultaneously via second lead (6) to a checking condenser (9). When segment (11) is activated the condenser (9) in loop (i) is charged and discharged by the control module (8), e.g. a microprocessor in multiplex with the normal activation signals, the condenser current being apparent as a potential drop across resistor 10 for comparison with required values. The circuit may be used in a liquid crystal display in a taximeter. <IMAGE>
SE8104364A 1980-07-16 1981-07-14 MONITORING CONNECTION FOR CHECKING THE CONNECTIONS OF LCD INDICATORS SE443060B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803026848 DE3026848A1 (en) 1980-07-16 1980-07-16 MONITORING CIRCUIT FOR CONTROLLING THE CONNECTIONS OF LCD DISPLAYS

Publications (2)

Publication Number Publication Date
SE8104364L true SE8104364L (en) 1982-01-17
SE443060B SE443060B (en) 1986-02-10

Family

ID=6107285

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8104364A SE443060B (en) 1980-07-16 1981-07-14 MONITORING CONNECTION FOR CHECKING THE CONNECTIONS OF LCD INDICATORS

Country Status (5)

Country Link
AT (1) AT382256B (en)
DE (1) DE3026848A1 (en)
FR (1) FR2487099A1 (en)
GB (1) GB2080593B (en)
SE (1) SE443060B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111197A (en) * 1982-12-17 1984-06-27 シチズン時計株式会社 Driving circuit for matrix type display unit
DE3432247C2 (en) * 1984-09-01 1986-12-18 Mannesmann Kienzle GmbH, 7730 Villingen-Schwenningen Arrangement for displaying a malfunction of a liquid crystal display
IT1222120B (en) * 1987-07-24 1990-08-31 Nuovo Pignone Spa PROCEDURE FOR THE CONTINUOUS AND AUTOMATIC CONTROL OF THE ELECTRIC EFFICIENCY AND OF THE DRIVING CONGRUENCE IN A LIQUID CRYSTAL INDICATOR
US4951037A (en) * 1988-03-17 1990-08-21 Honeywell Inc. Display segment fault detection apparatus
DE4036521C2 (en) * 1990-11-16 1996-09-05 Vdo Schindling Device for the visual inspection of a liquid crystal display
FR2783927B1 (en) 1998-09-28 2001-02-16 St Microelectronics Sa POWER CIRCUIT FOR CONTROLLING A PLASMA SCREEN, POWER MODULE INCORPORATING SAME AND METHOD FOR TESTING SUCH A MODULE
US8436844B2 (en) * 2009-06-18 2013-05-07 Roche Diagnostics Operations, Inc. Bi-stable display fail safes and devices incorporating the same
DE202019002401U1 (en) 2019-05-31 2019-06-27 Alexander Mlynek Electronic device for data acquisition from the liquid crystal display of a measuring device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943500A (en) * 1974-05-02 1976-03-09 Dresser Europe S.A. Seven-segment display arrangement and liquid fuel dispensing pump embodying the same
DE2502794A1 (en) * 1975-01-24 1976-07-29 Bizerba Werke Kraut Kg Wilh ELECTRONIC NUMERAL DISPLAY
DE2743907A1 (en) * 1977-09-29 1979-04-12 Siemens Ag PASSIVE ELECTRO-OPTICAL DISPLAY
CH627575A5 (en) * 1978-06-09 1982-01-15 Mettler Instrumente Ag MULTISEGMENT LIQUID CRYSTAL DISPLAY WITH A FUNCTION MONITORING CIRCUIT.
CH627576A5 (en) * 1978-07-18 1982-01-15 Mettler Instrumente Ag LIQUID CRYSTAL SEGMENT DISPLAY WITH A MONITORING CIRCUIT.
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)

Also Published As

Publication number Publication date
DE3026848A1 (en) 1982-02-04
FR2487099B1 (en) 1984-11-30
ATA283281A (en) 1986-06-15
GB2080593B (en) 1984-07-25
SE443060B (en) 1986-02-10
DE3026848C2 (en) 1989-01-05
GB2080593A (en) 1982-02-03
AT382256B (en) 1987-02-10
FR2487099A1 (en) 1982-01-22

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