DE3400056A1 - Multi-digit digital indicator - Google Patents

Multi-digit digital indicator

Info

Publication number
DE3400056A1
DE3400056A1 DE19843400056 DE3400056A DE3400056A1 DE 3400056 A1 DE3400056 A1 DE 3400056A1 DE 19843400056 DE19843400056 DE 19843400056 DE 3400056 A DE3400056 A DE 3400056A DE 3400056 A1 DE3400056 A1 DE 3400056A1
Authority
DE
Germany
Prior art keywords
light
emitting diode
multi
digital indicator
digit digital
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Withdrawn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
DE19843400056
Other languages
German (de)
Inventor
Christian Rings
Wolfgang Dipl Ing Rosenegger
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19843400056 priority Critical patent/DE3400056A1/en
Publication of DE3400056A1 publication Critical patent/DE3400056A1/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/04Control 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
    • G09G3/06Control 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
    • G09G3/12Control 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
    • G09G3/14Semiconductor devices, e.g. diodes

Abstract

A multi-digit digital indicator is proposed in which current fluctuations due to the changing number of light-emitting diode segments switched on and not switched on are prevented. A first control device (22) successively activates the light-emitting diode segments (La1, Lb1 ... Lg1) of the individual segment indicators at a predetermined rate. A second control device (29) decides at the same rate which of the activated light-emitting diode segments should light up or should remain dark due to the diode current being bypassed to earth. <IMAGE>
DE19843400056 1984-01-03 1984-01-03 Multi-digit digital indicator Withdrawn DE3400056A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19843400056 DE3400056A1 (en) 1984-01-03 1984-01-03 Multi-digit digital indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843400056 DE3400056A1 (en) 1984-01-03 1984-01-03 Multi-digit digital indicator

Publications (1)

Publication Number Publication Date
DE3400056A1 true DE3400056A1 (en) 1985-07-11

Family

ID=6224270

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843400056 Withdrawn DE3400056A1 (en) 1984-01-03 1984-01-03 Multi-digit digital indicator

Country Status (1)

Country Link
DE (1) DE3400056A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6545652B1 (en) 1999-07-08 2003-04-08 Nichia Corporation Image display apparatus and its method of operation
US20110101889A1 (en) * 2008-07-08 2011-05-05 Koninklijke Philips Electronics N.V. Methods and apparatus for determining relative positions of led lighting units

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6545652B1 (en) 1999-07-08 2003-04-08 Nichia Corporation Image display apparatus and its method of operation
SG98413A1 (en) * 1999-07-08 2003-09-19 Nichia Corp Image display apparatus and its method of operation
US6847342B2 (en) 1999-07-08 2005-01-25 Nichia Corporation Image display apparatus
US20110101889A1 (en) * 2008-07-08 2011-05-05 Koninklijke Philips Electronics N.V. Methods and apparatus for determining relative positions of led lighting units
US9491836B2 (en) * 2008-07-08 2016-11-08 Koninklijke Philips N.V. Methods and apparatus for determining relative positions of LED lighting units

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Legal Events

Date Code Title Description
8141 Disposal/no request for examination