GB1406366A - Digital electronic timepieces - Google Patents

Digital electronic timepieces

Info

Publication number
GB1406366A
GB1406366A GB3352773A GB3352773A GB1406366A GB 1406366 A GB1406366 A GB 1406366A GB 3352773 A GB3352773 A GB 3352773A GB 3352773 A GB3352773 A GB 3352773A GB 1406366 A GB1406366 A GB 1406366A
Authority
GB
United Kingdom
Prior art keywords
circuit
switches
watch
divider
distributer
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
GB3352773A
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 GB1406366A publication Critical patent/GB1406366A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G5/00—Setting, i.e. correcting or changing, the time-indication
    • G04G5/04—Setting, i.e. correcting or changing, the time-indication by setting each of the displayed values, e.g. date, hour, independently
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C17/00—Indicating the time optically by electric means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G04G19/02—Conversion or regulation of current or voltage
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G5/00—Setting, i.e. correcting or changing, the time-indication
    • G04G5/02—Setting, i.e. correcting or changing, the time-indication by temporarily changing the number of pulses per unit time, e.g. quick-feed method
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)

Abstract

1406366 Electronic watches SUWA SEIKOSHA KK 13 July 1973 [31 July 1972] 33527/73 Heading G3T In a digital electronic watch (e.g. using liquid crystal display), to prevent interference by faulty contacts of mechanical switches upon the normal running of the watch, the time-correcting switches 6, Fig. 6, and a safety switch 7 (which must be operated before the correction switches are effective) are not connected directly to a frequency divider and distributer circuit 3 but are connected via a control circuit 12. The switches 6 for hours, minutes, seconds correction respectively, are connected to inputs 1, 2 and 3, Fig. 8, of circuit 12, the outputs of which are connected to the circuit 3. When time is to be corrected, a signal is applied via switch 7 to cause the control circuit 12 to connect the time-correcting switches to the divider/distributer circuit 3. During normal running of the watch the safety switch armature contacts the earthed contact and the outputs of the correction switches are thereby earthed. The watch may comprise a quartz crystal controlled oscillator followed by a C-MOS divider circuit, and a C-MOS divider distributer circuit.
GB3352773A 1972-07-31 1973-07-13 Digital electronic timepieces Expired GB1406366A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47076697A JPS4934869A (en) 1972-07-31 1972-07-31

Publications (1)

Publication Number Publication Date
GB1406366A true GB1406366A (en) 1975-09-17

Family

ID=13612668

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3352773A Expired GB1406366A (en) 1972-07-31 1973-07-13 Digital electronic timepieces

Country Status (5)

Country Link
US (1) US3925978A (en)
JP (1) JPS4934869A (en)
GB (1) GB1406366A (en)
HK (1) HK3678A (en)
MY (1) MY7800067A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2495349A1 (en) * 1980-12-02 1982-06-04 Dodane Precia Gete Montres Aircraft multi-function chronometer controller - includes two control pushbuttons and rotating display showing function in operation and development of function chosen

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5146170A (en) * 1974-10-18 1976-04-20 Hitachi Ltd
JPS5189772A (en) * 1975-02-05 1976-08-06
US4105902A (en) * 1975-10-08 1978-08-08 Kabushiki Kaisha Suwa Seikosha Touch sensitive input for electronic wristwatch and/or electronic calculator
JPS5968288U (en) * 1982-10-28 1984-05-09 ジエコ−株式会社 automotive electronic clock
JPH0231189A (en) * 1988-07-20 1990-02-01 Rhythm Watch Co Ltd Sound time-piece equipped with snooze

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH569320B5 (en) * 1970-03-06 1975-11-14 Rolex Montres
US3664118A (en) * 1970-09-09 1972-05-23 Hamilton Watch Co Electronically controlled timepiece using low power mos transistor circuitry
CH1546470A4 (en) * 1970-10-20 1972-09-15
GB1342223A (en) * 1971-02-06 1974-01-03 Suwa Seikosha Kk Electronic wrist watches
JPS5219788B2 (en) * 1971-12-07 1977-05-30
US3762152A (en) * 1971-12-08 1973-10-02 Bunker Ramo Reset system for digital electronic timepiece
JPS5219979B2 (en) * 1972-04-17 1977-05-31

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2495349A1 (en) * 1980-12-02 1982-06-04 Dodane Precia Gete Montres Aircraft multi-function chronometer controller - includes two control pushbuttons and rotating display showing function in operation and development of function chosen

Also Published As

Publication number Publication date
MY7800067A (en) 1978-12-31
JPS4934869A (en) 1974-03-30
US3925978A (en) 1975-12-16
HK3678A (en) 1978-01-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930712