BE870113A - ELECTRET DEVICE AND LUMINOUS DISPLAY SYSTEM INCLUDING SUCH A DEVICE - Google Patents

ELECTRET DEVICE AND LUMINOUS DISPLAY SYSTEM INCLUDING SUCH A DEVICE

Info

Publication number
BE870113A
BE870113A BE190181A BE190181A BE870113A BE 870113 A BE870113 A BE 870113A BE 190181 A BE190181 A BE 190181A BE 190181 A BE190181 A BE 190181A BE 870113 A BE870113 A BE 870113A
Authority
BE
Belgium
Prior art keywords
system including
display system
luminous display
electret
electret device
Prior art date
Application number
BE190181A
Other languages
French (fr)
Original Assignee
Thomson Csf
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 Thomson Csf filed Critical Thomson Csf
Publication of BE870113A publication Critical patent/BE870113A/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0418—Constructional details
    • G09F13/0472—Traffic signs
    • 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
    • G09F9/37—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 movable elements
    • G09F9/372—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 movable elements the positions of the elements being controlled by the application of an electric field

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Road Signs Or Road Markings (AREA)
BE190181A 1977-09-02 1978-08-31 ELECTRET DEVICE AND LUMINOUS DISPLAY SYSTEM INCLUDING SUCH A DEVICE BE870113A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7726693A FR2402220A1 (en) 1977-09-02 1977-09-02 ELECTRET DEVICE AND LUMINOUS DISPLAY SYSTEM INCLUDING SUCH A DEVICE

Publications (1)

Publication Number Publication Date
BE870113A true BE870113A (en) 1978-12-18

Family

ID=9194993

Family Applications (1)

Application Number Title Priority Date Filing Date
BE190181A BE870113A (en) 1977-09-02 1978-08-31 ELECTRET DEVICE AND LUMINOUS DISPLAY SYSTEM INCLUDING SUCH A DEVICE

Country Status (7)

Country Link
JP (1) JPS5449100A (en)
BE (1) BE870113A (en)
DE (1) DE2838277C3 (en)
FR (1) FR2402220A1 (en)
GB (1) GB2006944B (en)
LU (1) LU80175A1 (en)
NL (1) NL7808984A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61503057A (en) * 1984-08-21 1986-12-25 シンプソン，ジヨ−ジ　ア−ル． Electrostatically actuated binary device array
US4794370A (en) * 1984-08-21 1988-12-27 Bos-Knox Ltd. Peristaltic electrostatic binary device
US4736202A (en) * 1984-08-21 1988-04-05 Bos-Knox, Ltd. Electrostatic binary switching and memory devices
IT1303597B1 (en) * 1998-12-09 2000-11-14 Fiat Ricerche OPTICAL DEVICE AND VARIABLE OPERATING STATE, IN PARTICULAR SHUTTER OR MIRROR, WITH ELECTROSTATIC CONTROL.
US6427910B1 (en) * 1999-12-17 2002-08-06 International Business Machines Corporation Method for managing and updating overloaded cards

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897997A (en) * 1974-02-01 1975-08-05 Charles G Kalt Electrostatic display device with variable reflectivity

Also Published As

Publication number Publication date
FR2402220A1 (en) 1979-03-30
DE2838277A1 (en) 1979-03-08
JPS5449100A (en) 1979-04-18
LU80175A1 (en) 1979-02-12
DE2838277C3 (en) 1981-10-01
GB2006944A (en) 1979-05-10
GB2006944B (en) 1982-01-13
DE2838277B2 (en) 1981-01-22
NL7808984A (en) 1979-03-06
FR2402220B1 (en) 1982-01-08

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: THOMSON-CSF

Effective date: 19860831