GB1360932A - Digital electronic timepiece - Google Patents

Digital electronic timepiece

Info

Publication number
GB1360932A
GB1360932A GB3473972A GB3473972A GB1360932A GB 1360932 A GB1360932 A GB 1360932A GB 3473972 A GB3473972 A GB 3473972A GB 3473972 A GB3473972 A GB 3473972A GB 1360932 A GB1360932 A GB 1360932A
Authority
GB
United Kingdom
Prior art keywords
time
pulse
panels
mins
signal
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
GB3473972A
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Instruments Inc filed Critical Seiko Instruments Inc
Publication of GB1360932A publication Critical patent/GB1360932A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/28—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to put into action electro-acoustic means, e.g. awakening by music
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F1/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers
    • G04F1/005—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers using electronic timing, e.g. counting means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
    • G04F3/06—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with electric driving mechanisms
    • G04F3/08—Additional arrangements in connection with ordinary electric clocks for this purpose
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G13/00—Producing acoustic time signals
    • G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
    • G04G13/025—Producing acoustic time signals at preselected times, e.g. alarm clocks acting only at one preselected time
    • 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)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electric Clocks (AREA)
  • Indicating Measured Values (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Electromechanical Clocks (AREA)

Abstract

1360932 Electronic watches DAINI SEIKOSHA KK 25 July 1972 [30 July 1971] 34739/72 Heading G3T An electronic timepiece gives a digital indication of time in a section 3 Fig. 1 and in addition gives an indication in a section 4, of the time interval between the time at a given moment and a predetermined time in the future i.e. remaining time before a fixed appointment. Preferably liquid crystal display panels are employed. An alarm may be operated at the termination of the predetermined time interval. The timepiece comprises a crystal controlled oscillator Fig. 2, (not shown) the output of which is divided to produce a 1 pulse/ sec signal which is fed to a counter. The counter produces a timing signal which is fed via a driver to the time indicating display section 3. The timing signal from the counter is fed to a further counter (not shown) which applies a signal having a frequency of 1 pulse/ 10 mins to a divider 20 Fig. 3. This produces signals on lines 20a, 20b, 20c at 1 pulse/10 mins, 1 pulse/20 mins, 1 pulse/40 mins respectively. These signals are each passed to respective AND gates 21, 22, 23 and according to the setting of a time-scale selector switch 25 for selecting the max. remaining time, the appropriate AND gate is opened to pass one signal e.g. the 1 pulse/10 min signal, via the respective NOT gate 21a to a shift register 24. The register has outputs to the remaining time indicating panels 26a to 26f. Initially all the panels are turned ON and after an interval, i.e. 10 mins with switch in position 1, a pulse is applied to the register from divider 20 causing the output in a line 24f to disappear so that panel 26f turns OFF. The remaining panels are sequentially turned OFF at 10 minute intervals. The remaining time is determined from the number of panels which are turned ON. Alternatively, the panels may be turned ON in sequence. The position of switch 25 is translated by a decoder 27 into a voltage to activate drive elements 28, 29, 30 which indicate the time scale (e.g. 1 hour, 2 hours, 4 hours etc) in numerical form, for the remaining time.
GB3473972A 1971-07-30 1972-07-25 Digital electronic timepiece Expired GB1360932A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5730071A JPS5536957B1 (en) 1971-07-30 1971-07-30

Publications (1)

Publication Number Publication Date
GB1360932A true GB1360932A (en) 1974-07-24

Family

ID=13051690

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3473972A Expired GB1360932A (en) 1971-07-30 1972-07-25 Digital electronic timepiece

Country Status (5)

Country Link
JP (1) JPS5536957B1 (en)
CH (2) CH1134172A4 (en)
DE (1) DE2237548C2 (en)
FR (1) FR2148065B1 (en)
GB (1) GB1360932A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000337A (en) * 1977-06-17 1979-01-04 Seiko Instr & Electronics Electronic timepieces
GB2000339A (en) * 1977-06-16 1979-01-04 Matsushita Electric Ind Co Ltd Time sound generating device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5223968A (en) * 1975-08-18 1977-02-23 Seiko Instr & Electronics Ltd Digital alarm watch
JPS5247767A (en) * 1975-10-14 1977-04-15 Seiko Instr & Electronics Ltd Digital alarm watch
JPS5251974A (en) * 1975-10-24 1977-04-26 Seiko Instr & Electronics Ltd Digital alarm electronic watch
CH633938GA3 (en) * 1980-03-24 1983-01-14 Device signalling parking time

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605833A (en) * 1951-01-25 1952-08-05 Veeder Root Inc Timer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000339A (en) * 1977-06-16 1979-01-04 Matsushita Electric Ind Co Ltd Time sound generating device
GB2000339B (en) * 1977-06-16 1982-03-31 Matsushita Electric Ind Co Ltd Time sound generating device
GB2000337A (en) * 1977-06-17 1979-01-04 Seiko Instr & Electronics Electronic timepieces
GB2000337B (en) * 1977-06-17 1982-01-06 Seiko Instr & Electronics Improvements in or relating to electronic timepieces

Also Published As

Publication number Publication date
FR2148065B1 (en) 1976-10-29
CH1134172A4 (en) 1975-02-28
DE2237548A1 (en) 1973-02-08
CH589318B5 (en) 1977-06-30
JPS5536957B1 (en) 1980-09-25
FR2148065A1 (en) 1973-03-11
DE2237548C2 (en) 1981-10-15

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Legal Events

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