GB1495568A - Electronic wristwatch - Google Patents

Electronic wristwatch

Info

Publication number
GB1495568A
GB1495568A GB1417875A GB1417875A GB1495568A GB 1495568 A GB1495568 A GB 1495568A GB 1417875 A GB1417875 A GB 1417875A GB 1417875 A GB1417875 A GB 1417875A GB 1495568 A GB1495568 A GB 1495568A
Authority
GB
United Kingdom
Prior art keywords
display
april
hours
alternatively
minutes
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
GB1417875A
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.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
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 Suwa Seikosha KK filed Critical Suwa Seikosha KK
Publication of GB1495568A publication Critical patent/GB1495568A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/08—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
    • G04G9/12—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals
    • G04G9/126—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals provided with means for displaying at will a time indication or a date or a part thereof
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/153—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electric Clocks (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

1495568 Controlling light; electronic watches SUWA SEIKOSHA KK 7 April 1975 [8 April 1974] 14178/75 Headings G2F and G3T An electronic wristwatch comprises an oscillator, e.g. of quartz crystal, and dividing and drive circuitry connected to a display using spaced electrodes with material therebetween which undergoes a persistent but reversible oxidation-reduction reaction when excited. The display material may be a viologen dyestuff, hydroquinone, 26-dibromophenol, or a compound undergoing the reaction: Alternatively it may be an inorganic material such as molybdenum trioxide, tungsten dioxide, niobium oxide or titanium dioxide. If a mixture of dyestuffs is used, different colours may be obtained by applying different voltages. The watch described has a four-digit display and different colours may thus be used for the hours and the minutes. Alternatively if the same digits are used to provide a seconds and date display, a different colour may then be used to distinguish from an hours and minutes display. Reference has been directed by the Comptroller to Specification 1377620
GB1417875A 1974-04-08 1975-04-07 Electronic wristwatch Expired GB1495568A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49039616A JPS50133868A (en) 1974-04-08 1974-04-08

Publications (1)

Publication Number Publication Date
GB1495568A true GB1495568A (en) 1977-12-21

Family

ID=12558029

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1417875A Expired GB1495568A (en) 1974-04-08 1975-04-07 Electronic wristwatch

Country Status (5)

Country Link
JP (1) JPS50133868A (en)
DE (1) DE2515303B2 (en)
GB (1) GB1495568A (en)
HK (1) HK45979A (en)
MY (1) MY8000044A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006051058A1 (en) * 2004-11-12 2006-05-18 Siemens Aktiengesellschaft Printed circuit board with an electrochromic component and production method therefor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2365150A1 (en) * 1976-09-17 1978-04-14 Seiko Instr & Electronics Electronic timepiece with variable colour display - is controlled by display function selector switch and uses mixture of liquid crystals
JPS6060727U (en) * 1983-09-30 1985-04-27 日本電気株式会社 electrochromic display device
CN102835731A (en) * 2012-07-24 2012-12-26 云南瑞升烟草技术（集团）有限公司 Paper-making method reconstituted tobacco with stripes or patterns

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3453038A (en) * 1966-06-15 1969-07-01 Du Pont Compartmented electrochromic device
JPS4934868A (en) * 1972-07-31 1974-03-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006051058A1 (en) * 2004-11-12 2006-05-18 Siemens Aktiengesellschaft Printed circuit board with an electrochromic component and production method therefor

Also Published As

Publication number Publication date
HK45979A (en) 1979-07-13
DE2515303B2 (en) 1979-04-12
JPS50133868A (en) 1975-10-23
DE2515303A1 (en) 1975-10-16
MY8000044A (en) 1980-12-31

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19950406