GB2000343A - Control and fault-indicating circuitry for led-displays - Google Patents

Control and fault-indicating circuitry for led-displays

Info

Publication number
GB2000343A
GB2000343A GB7827478A GB7827478A GB2000343A GB 2000343 A GB2000343 A GB 2000343A GB 7827478 A GB7827478 A GB 7827478A GB 7827478 A GB7827478 A GB 7827478A GB 2000343 A GB2000343 A GB 2000343A
Authority
GB
United Kingdom
Prior art keywords
circuitry
segments
displays
fault
led
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
GB7827478A
Other versions
GB2000343B (en
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.)
Vogel and Halke
Original Assignee
Vogel and Halke
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 Vogel and Halke filed Critical Vogel and Halke
Publication of GB2000343A publication Critical patent/GB2000343A/en
Application granted granted Critical
Publication of GB2000343B publication Critical patent/GB2000343B/en
Expired legal-status Critical Current

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
    • G09G3/04—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
    • G09G3/06—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 using controlled light sources
    • G09G3/12—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 using controlled light sources using electroluminescent elements
    • G09G3/14—Semiconductor devices, e.g. diodes
    • 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
    • G09F9/33—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 being semiconductor devices, e.g. diodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Quality & Reliability (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

The circuitry monitors the functional integrity of segmented LED displays 1-8 especially for 7-segment display elements, detecting faults both in the control circuits and also in the individual segments or diode elements. The circuitry includes a monitoring device which checks the current throughput in the energised segments and signals short-circuit conditions and changes in the resistance of the segments using comparator and gating techniques, particularly using buffered CMOS gate circuits. The circuitry is usable in conjunction with a microprocessor and is adaptable to multiplex operation. It will accept both binary and BCD information. <IMAGE>
GB7827478A 1977-06-21 1978-06-21 Control and fault-indicating circuitry for led displays Expired GB2000343B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2727800A DE2727800B2 (en) 1977-06-21 1977-06-21 Circuit arrangement for operation and function error monitoring for LED displays

Publications (2)

Publication Number Publication Date
GB2000343A true GB2000343A (en) 1979-01-04
GB2000343B GB2000343B (en) 1982-01-20

Family

ID=6011949

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7827478A Expired GB2000343B (en) 1977-06-21 1978-06-21 Control and fault-indicating circuitry for led displays

Country Status (4)

Country Link
DE (1) DE2727800B2 (en)
FR (1) FR2395665A1 (en)
GB (1) GB2000343B (en)
IT (1) IT1096028B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2724749A1 (en) * 1994-09-15 1996-03-22 Sofrela Sa LED lamps with integral controller for road traffic control signals
US6486860B1 (en) * 1997-03-15 2002-11-26 Dambach-Werke Gmbh Display unit with an LED matrix
GB2449949A (en) * 2007-06-08 2008-12-10 Macroblock Inc Driving apparatus for reporting states of light emitting diode channels in a binary mode
CN109754747A (en) * 2017-11-01 2019-05-14 无锡华润矽科微电子有限公司 Integrated LED drive circuit structure and corresponding LED display system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3151057A1 (en) * 1981-12-23 1983-07-28 Toledo-Werk GmbH, 5000 Köln Method and device for verifying the display values in digital displays composed of display elements having a plurality of display segments
DE3205975A1 (en) * 1982-02-19 1983-09-01 Eckardt Ag, 7000 Stuttgart Circuit for automatically checking a segment display formed by light-emitting diodes
DE3643226A1 (en) * 1986-12-18 1988-06-30 Standard Elektrik Lorenz Ag Device for operating a plurality of electrical loads in a reliable manner in signalling terms
DE4203276A1 (en) * 1991-09-19 1993-04-01 Ronkholz Karl Heinz Monitoring of information displayed by light-emitting diodes - registering data and control signals by groups of diodes through which current is assessed
DE4435905A1 (en) * 1994-10-07 1996-04-11 Werner Hachmann Phase comparator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1345503A (en) * 1971-09-21 1974-01-30 Scheidt & Bachmann Gmbh System for function supervision of the electrical actuation of seven-element numerical indications
GB1474218A (en) * 1974-01-18 1977-05-18 Reliance Electric Co Display verifier

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53123161A (en) * 1977-04-01 1978-10-27 Yamato Scale Co Ltd Error detector for letter indicating apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1345503A (en) * 1971-09-21 1974-01-30 Scheidt & Bachmann Gmbh System for function supervision of the electrical actuation of seven-element numerical indications
GB1474218A (en) * 1974-01-18 1977-05-18 Reliance Electric Co Display verifier

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2724749A1 (en) * 1994-09-15 1996-03-22 Sofrela Sa LED lamps with integral controller for road traffic control signals
US6486860B1 (en) * 1997-03-15 2002-11-26 Dambach-Werke Gmbh Display unit with an LED matrix
GB2449949A (en) * 2007-06-08 2008-12-10 Macroblock Inc Driving apparatus for reporting states of light emitting diode channels in a binary mode
AU2007203351B2 (en) * 2007-06-08 2009-07-23 Macroblock, Inc. Driving Apparatus for Reporting States of Light-Emitting Diode Channels in a Binary Mode
GB2449949B (en) * 2007-06-08 2009-09-23 Macroblock Inc Driving apparatus for reporting states of light-emitting diode channels in a binary mode
CN109754747A (en) * 2017-11-01 2019-05-14 无锡华润矽科微电子有限公司 Integrated LED drive circuit structure and corresponding LED display system
CN109754747B (en) * 2017-11-01 2023-09-19 华润微集成电路(无锡)有限公司 Integrated LED driving circuit structure and corresponding LED display system

Also Published As

Publication number Publication date
DE2727800B2 (en) 1979-08-02
GB2000343B (en) 1982-01-20
IT1096028B (en) 1985-08-17
DE2727800A1 (en) 1979-01-04
IT7824757A0 (en) 1978-06-20
FR2395665A1 (en) 1979-01-19
FR2395665B1 (en) 1983-12-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920621