GB2089535B - An electronic watch having an analog display and an electro-optical display device - Google Patents

An electronic watch having an analog display and an electro-optical display device

Info

Publication number
GB2089535B
GB2089535B GB8137350A GB8137350A GB2089535B GB 2089535 B GB2089535 B GB 2089535B GB 8137350 A GB8137350 A GB 8137350A GB 8137350 A GB8137350 A GB 8137350A GB 2089535 B GB2089535 B GB 2089535B
Authority
GB
United Kingdom
Prior art keywords
electro
cell
discs
display
analog
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
GB8137350A
Other versions
GB2089535A (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.)
Ebauches SA
Original Assignee
Ebauches SA
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 Ebauches SA filed Critical Ebauches SA
Publication of GB2089535A publication Critical patent/GB2089535A/en
Application granted granted Critical
Publication of GB2089535B publication Critical patent/GB2089535B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C17/00—Indicating the time optically by electric means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/04—Time pieces with invisible drive, e.g. with hands attached to a rotating glass disc
    • G04B45/046—Time pieces with invisible drive, e.g. with hands attached to a rotating glass disc the driving mechanism of the hands being invisible because of special shielding
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C17/00—Indicating the time optically by electric means
    • G04C17/005—Indicating the time optically by electric means by discs
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C17/00—Indicating the time optically by electric means
    • G04C17/0091—Combined electro-optical and electro-mechanical displays
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0082—Visual time or date indication means by building-up characters using a combination of indicating elements and by selecting desired characters out of a number of characters or by selecting indicating elements the positions of which represents the time, i.e. combinations of G04G9/02 and G04G9/08

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

To simplify the construction of a watch comprising an analog display and an electro-optical display cell 12, the analog display is provided by two transparent discs 8a and 10a carrying minute and hour markers 8 and 10 and located in front of the cell 12. The discs are driven at their peripheries by means of a stepping motor 40. This construction permits the use of a display cell 12 of large size, which does not have hand spindles passing through it. The display cell 12 is visible through apertures in a dial 14. The watch is powered by a cell 64. There may be two separate motors for the minutes and hours discs 8a, 10a. The hand discs may show local time when the electro-optical display shows the time at a different location (Rome in Fig. 1). <IMAGE>
GB8137350A 1980-12-12 1981-12-10 An electronic watch having an analog display and an electro-optical display device Expired GB2089535B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH918580A CH636241B (en) 1980-12-12 1980-12-12 ELECTRONIC WATCH WITH ANALOGUE DISPLAY AND DISPLAY BY ELECTRO-OPTICAL DEVICE.

Publications (2)

Publication Number Publication Date
GB2089535A GB2089535A (en) 1982-06-23
GB2089535B true GB2089535B (en) 1983-12-14

Family

ID=4349263

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8137350A Expired GB2089535B (en) 1980-12-12 1981-12-10 An electronic watch having an analog display and an electro-optical display device

Country Status (3)

Country Link
JP (1) JPS57122376A (en)
CH (1) CH636241B (en)
GB (1) GB2089535B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0532004A (en) * 1991-06-07 1993-02-09 Tokyo Electric Co Ltd Printer for register
GB2322460B (en) * 1997-02-21 1999-01-06 Future Digital Technology Limi Wrist watch

Also Published As

Publication number Publication date
JPS57122376A (en) 1982-07-30
CH636241GA3 (en) 1983-05-31
GB2089535A (en) 1982-06-23
CH636241B (en)

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee