CH630219GA3 - - Google Patents

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Publication number
CH630219GA3
CH630219GA3 CH513379A CH513379A CH630219GA3 CH 630219G A3 CH630219G A3 CH 630219GA3 CH 513379 A CH513379 A CH 513379A CH 513379 A CH513379 A CH 513379A CH 630219G A3 CH630219G A3 CH 630219GA3
Authority
CH
Switzerland
Prior art keywords
cell
time
illuminating device
watch
operated
Prior art date
Application number
CH513379A
Other languages
French (fr)
Other versions
CH630219B (en
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
Publication of CH630219B publication Critical patent/CH630219B/en
Application filed filed Critical
Priority to CH513379A priority Critical patent/CH630219B/en
Priority to US06/151,780 priority patent/US4335453A/en
Priority to DE3020414A priority patent/DE3020414C2/en
Priority to JP7413280A priority patent/JPS55164391A/en
Publication of CH630219GA3 publication Critical patent/CH630219GA3/fr

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
    • G04G9/0082—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
    • G04G9/0094—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 using light valves, e.g. liquid crystals

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Saccharide Compounds (AREA)

Abstract

In an electronic watch the indication of the time (hours, minutes and possibly seconds) is given in analog form by means of a first passive electro-optic display cell. The display segments of this first display cell are arranged radially with respect to a central point, and the activated segments thereof have the appearance of the conventional hands of an analog watch. The watch comprises a second passive electro-optic display cell furnishing information in digital form, for example indicating the day of the week and the date. So that only the second cell need be provided with an illuminating device, the watch comprises a selector which is manually operable by means of a push-button which, when it is operated, causes the time to be displayed by the second cell at the same time as the illuminating device thereof is operated. This arrangement enables the user to know the time in the dark without it being necessary to provide the first cell with an illuminating device.
CH513379A 1979-06-01 1979-06-01 ELECTRONIC WATCH. CH630219B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CH513379A CH630219B (en) 1979-06-01 1979-06-01 ELECTRONIC WATCH.
US06/151,780 US4335453A (en) 1979-06-01 1980-05-21 Electronic watch
DE3020414A DE3020414C2 (en) 1979-06-01 1980-05-27 Electronic clock
JP7413280A JPS55164391A (en) 1979-06-01 1980-06-02 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH513379A CH630219B (en) 1979-06-01 1979-06-01 ELECTRONIC WATCH.

Publications (2)

Publication Number Publication Date
CH630219B CH630219B (en)
CH630219GA3 true CH630219GA3 (en) 1982-06-15

Family

ID=4288490

Family Applications (1)

Application Number Title Priority Date Filing Date
CH513379A CH630219B (en) 1979-06-01 1979-06-01 ELECTRONIC WATCH.

Country Status (4)

Country Link
US (1) US4335453A (en)
JP (1) JPS55164391A (en)
CH (1) CH630219B (en)
DE (1) DE3020414C2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2077465B (en) * 1980-06-06 1984-07-04 Casio Computer Co Ltd Compact electronic device having calendar function
US5055840A (en) * 1990-01-16 1991-10-08 Carroll Touch Incorporated Infrared touch input device and light emitted activation circuit
JPH1090440A (en) * 1996-09-12 1998-04-10 Citizen Watch Co Ltd Electronic watch mounted with solar battery
USD431202S (en) * 1998-04-07 2000-09-26 Rado Watch Co. Ltd Back cover of a watch with a variable pattern
US6084828A (en) * 1998-11-05 2000-07-04 Fossil, Inc. Timepiece and chronometer with overlapping, separately driven analog and digital displays
US9639064B2 (en) * 2015-09-18 2017-05-02 Timex Group Usa, Inc. Wearable electronic device with hand synchronization

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991552A (en) * 1973-05-29 1976-11-16 Hughes Aircraft Company Digital watch with liquid crystal display
US3864905A (en) * 1973-11-14 1975-02-11 Hoffmann La Roche Horological instrument incorporating means for illuminating a liquid crystal display
US3911665A (en) * 1974-01-14 1975-10-14 Zenith Radio Corp Electronic timepiece having complementary electro-optical and electro-mechanical displays
JPS5159268U (en) * 1974-11-01 1976-05-10
US4246602A (en) * 1977-12-09 1981-01-20 Citizen Watch Company Limited Electronic timepiece
JPS54112065U (en) * 1977-12-27 1979-08-07
US4212159A (en) * 1978-02-13 1980-07-15 Texas Instruments Incorporated Electronic timepiece

Also Published As

Publication number Publication date
JPS55164391A (en) 1980-12-22
US4335453A (en) 1982-06-15
JPS6353518B2 (en) 1988-10-24
DE3020414A1 (en) 1980-12-04
CH630219B (en)
DE3020414C2 (en) 1982-12-02

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