BR7605766A - Circuito excitador de dispositivo emissor de luz para relogio eletronico a cristal liquido - Google Patents

Circuito excitador de dispositivo emissor de luz para relogio eletronico a cristal liquido

Info

Publication number
BR7605766A
BR7605766A BR7605766A BR7605766A BR7605766A BR 7605766 A BR7605766 A BR 7605766A BR 7605766 A BR7605766 A BR 7605766A BR 7605766 A BR7605766 A BR 7605766A BR 7605766 A BR7605766 A BR 7605766A
Authority
BR
Brazil
Prior art keywords
liquid crystal
light emitting
emitting device
driving circuit
electronic watch
Prior art date
Application number
BR7605766A
Other languages
English (en)
Inventor
T Ishikawa
Original Assignee
Seiko Instr & Electronics
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 Seiko Instr & Electronics filed Critical Seiko Instr & Electronics
Publication of BR7605766A publication Critical patent/BR7605766A/pt

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0047—Details electrical, e.g. selection or application of the operating voltage
    • G04G9/0052—Details electrical, e.g. selection or application of the operating voltage using means to adjust the display in accordance with the ambient light, e.g. switching or controlling a supplementary light source
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0047—Details electrical, e.g. selection or application of the operating voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
BR7605766A 1975-09-09 1976-08-31 Circuito excitador de dispositivo emissor de luz para relogio eletronico a cristal liquido BR7605766A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50109322A JPS5233570A (en) 1975-09-09 1975-09-09 Drive circuit for luminous body for illumination for liquid crystal el ectronic watch

Publications (1)

Publication Number Publication Date
BR7605766A true BR7605766A (pt) 1978-04-04

Family

ID=14507278

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7605766A BR7605766A (pt) 1975-09-09 1976-08-31 Circuito excitador de dispositivo emissor de luz para relogio eletronico a cristal liquido

Country Status (9)

Country Link
US (1) US4051664A (pt)
JP (1) JPS5233570A (pt)
BR (1) BR7605766A (pt)
CA (1) CA1064266A (pt)
DE (1) DE2640483A1 (pt)
FR (1) FR2324042A1 (pt)
GB (1) GB1506670A (pt)
HK (1) HK84979A (pt)
IT (1) IT1066495B (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5473081A (en) * 1977-11-22 1979-06-12 Seiko Epson Corp Fully electronic watch with lamp
JPS54125276U (pt) * 1978-02-21 1979-09-01
US4181916A (en) * 1978-03-27 1980-01-01 Rca Corporation Liquid crystal channel number display responsive to ambient light level

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3962859A (en) * 1971-08-20 1976-06-15 Kabushiki Kaisha Daini Seikosha Cell replacement indication device
US3898790A (en) * 1972-11-09 1975-08-12 Citizen Watch Co Ltd Battery-driven watch with battery consumption display alarm
US3855784A (en) * 1973-07-30 1974-12-24 D Foellner Illuminated time piece
US3911665A (en) * 1974-01-14 1975-10-14 Zenith Radio Corp Electronic timepiece having complementary electro-optical and electro-mechanical displays

Also Published As

Publication number Publication date
DE2640483A1 (de) 1977-03-10
US4051664A (en) 1977-10-04
JPS5233570A (en) 1977-03-14
FR2324042B1 (pt) 1981-06-12
FR2324042A1 (fr) 1977-04-08
CA1064266A (en) 1979-10-16
IT1066495B (it) 1985-03-12
HK84979A (en) 1979-12-21
GB1506670A (en) 1978-04-12

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