GB1525949A - Automatic display segment intensity control - Google Patents

Automatic display segment intensity control

Info

Publication number
GB1525949A
GB1525949A GB50287/75A GB5028775A GB1525949A GB 1525949 A GB1525949 A GB 1525949A GB 50287/75 A GB50287/75 A GB 50287/75A GB 5028775 A GB5028775 A GB 5028775A GB 1525949 A GB1525949 A GB 1525949A
Authority
GB
United Kingdom
Prior art keywords
segments
dec
resistor
intensity control
display segment
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.)
Expired
Application number
GB50287/75A
Other languages
English (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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of GB1525949A publication Critical patent/GB1525949A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
GB50287/75A 1974-12-23 1975-12-08 Automatic display segment intensity control Expired GB1525949A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/535,311 US3986186A (en) 1974-12-23 1974-12-23 Automatic display segment intensity control

Publications (1)

Publication Number Publication Date
GB1525949A true GB1525949A (en) 1978-09-27

Family

ID=24133646

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50287/75A Expired GB1525949A (en) 1974-12-23 1975-12-08 Automatic display segment intensity control

Country Status (4)

Country Link
US (1) US3986186A (enExample)
JP (1) JPS595893Y2 (enExample)
CA (1) CA1048668A (enExample)
GB (1) GB1525949A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4524457A (en) * 1984-04-30 1985-06-18 Marino Technologies, Inc. Cargo bag with reinforced triangular lifting panels

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099171A (en) * 1977-01-28 1978-07-04 National Semiconductor Corporation Brightness control in an LED display device
US4314245A (en) * 1980-03-10 1982-02-02 Wilbur Jr John R Video compensation subcircuit
DE3036737C2 (de) * 1980-09-29 1986-10-23 Tandberg Data A/S, Oslo Anordnung zum Erzeugen eines Lichtstärkesteuersignals für einen Videoverstärker eines Datensichtgerätes
US4441106A (en) * 1982-06-04 1984-04-03 Northern Telecom Limited Electrical display apparatus with reduced peak power consumption
US4825201A (en) * 1985-10-01 1989-04-25 Mitsubishi Denki Kabushiki Kaisha Display device with panels compared to form correction signals
US5644328A (en) * 1995-03-03 1997-07-01 Motorola Apparatus and method for operating groups of led display pixels in parallel to maximize active time
US6693394B1 (en) 2002-01-25 2004-02-17 Yazaki North America, Inc. Brightness compensation for LED lighting based on ambient temperature

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3721084A (en) * 1971-08-03 1973-03-20 Hamilton Watch Co Solid state watch incorporating large-scale integrated circuits
JPS4984194A (enExample) * 1972-12-15 1974-08-13
JPS5315773B2 (enExample) * 1973-07-05 1978-05-27

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4524457A (en) * 1984-04-30 1985-06-18 Marino Technologies, Inc. Cargo bag with reinforced triangular lifting panels

Also Published As

Publication number Publication date
CA1048668A (en) 1979-02-13
US3986186A (en) 1976-10-12
JPS5181631U (enExample) 1976-06-30
JPS595893Y2 (ja) 1984-02-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee