US3822547A - Digital wrist watch having timer function - Google Patents

Digital wrist watch having timer function Download PDF

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Publication number
US3822547A
US3822547A US00325697A US32569773A US3822547A US 3822547 A US3822547 A US 3822547A US 00325697 A US00325697 A US 00325697A US 32569773 A US32569773 A US 32569773A US 3822547 A US3822547 A US 3822547A
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US
United States
Prior art keywords
circuit means
timer
time
signals
selecting
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 - Lifetime
Application number
US00325697A
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English (en)
Inventor
K Fujita
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
Priority claimed from JP805972A external-priority patent/JPS5733557B2/ja
Priority claimed from JP806072A external-priority patent/JPS4878975A/ja
Priority claimed from JP47008061A external-priority patent/JPS4878976A/ja
Application filed by Suwa Seikosha KK filed Critical Suwa Seikosha KK
Application granted granted Critical
Publication of US3822547A publication Critical patent/US3822547A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • G04G—ELECTRONIC TIME-PIECES
    • G04G11/00—Producing optical signals at preselected times
    • 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
    • G04G9/087—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques provided with means for displaying at will a time indication or a date or a part thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • H01J29/07—Shadow masks for colour television tubes

Definitions

  • a digital wrist watch is provided with a quartz oscilla- 1972 Japan 47 8060 tor, counting and distribution circuits and a digital 1972 Japan 418061 electronic display device.
  • the watch is provided with a memory circuit for the performance of a timer func- US. B 5 1110.
  • I I l I I l u selective application Of either time keeping O1 timer
  • Field 58/23 R A 38 39.5 signals to the display device so that said display device 58/537 5 may serve both the time keeping and timer functions.
  • Said switch and selecting circuit also serves to permit 56] References Cited the use of a single set of switches for both time correc- UNITED STATES PATENTS tion and setting of the timer function.
  • Such wrist watches provided with a timer function.
  • Digital wrist watches have been provided with digital display devices based on liquid crystal displays, lightemitting diode displays and the like.
  • push button switches are utilized in digital wrist watches for the correction of time and other functions.
  • these switches cannot be incorporated in a winding crown where a plurality of switches may be actuated by various pulling and turning operations, as would be the case in a conventional wrist watch.
  • the number of switches required for normal operation of a digital-watch is increased.
  • time correction of such digital watches would be greatly simplified if separate switches were provided for the correction of each of the hour, -minute, minute, lO-second and second digits ofv the display.
  • an object of the invention is to provide a digital wrist watch incorporating both time keeping and timer functions in a compact structure.
  • Another object of the invention is to provide a digital timepiece wherein a single display device serves as the display for both time keeping and timer functions.
  • a further object of the invention is to provide a digital wrist watch wherein a single set of switches serves as both time-correcting switches for the time keeping function and setting switches for the timer function.
  • FIG. I is a top plan view of a digital wrist watch in accordance with the invention.
  • FIG. 2 is a block circuit diagram of the time keeping and timer circuitry of the wrist watch of FIG. I.
  • the digital wrist watch depicted is adapted to perform both time keeping and timer functions.
  • the watch is provided, on its front face, with five switches.
  • Switches l, 2, 4 and 5 are push button switches, while switch 3 is a sliding two position switch.
  • switch I is adapted for performing the hour correction and hour timersetting functions
  • switch 2 is adapted to perform the minute correction and minute timer setting function
  • switch 4 is a system reset switch
  • switch 5 is for starting and stopping the timepiece.
  • Sliding switch 3 is for selecting whether the timepiece is to perform the watch function or the timer function.
  • the watch is provided with a digital display panel 6 which may be formed from either liquid crystal displays, light-emitting diode displays or the like.
  • the circuitry, switches and displays are mounted on a watch case 7 held on the hand of the use by a watch band 8.
  • the watch includes a quartz crystal oscillator I I adapted to produce a high frequency time standard signal. This signal is applied to counting circuit 12 which divides the high frequency signal into a second signal having a frequency of 1 Hz. Said second signal is applied to counting circuit 13 which counts said second signal and produces a BCD coded signal representative of the count for application to'selecting circuit 19 and a minute signal for application to counting circuit 14. Counting circuit 14 counts said minute signal and produces a BCD code representative of said count which is applied to both selecting circuit 19 and coincidence circuit 18. Said counting circuit also produces an hour signal for application to counting circuit 115. Counting circuit 15 counts said hour signal and produces a BCD code representative of the hour count to both selecting circuit 19 and coincidence I8. Counting circuit I5 would, in this embodiment, be adapted'to recycle after counting 24 hours.
  • the timepiece also includes, as part of the timer circuitry, memory circuits l6 and l7, associated respectively with minute and hour. These memory circuits store either the predetermined time period which begins or ends at a certain time or the predetermined time when a certain time period begins or ends, depending on the specific nature of the timer function to be performed.
  • the output of each of memory circuits l6 and 17 is a BCD code signal respectively representative of the stored minute and hour which is applied to both selecting circuit 119 and coincidence circuit 18.
  • Sliding switch S (corresponding to switch 3 of FIG. 1) is coupled to selecting circuit 19 for selectively disposing said selecting circuit so that either the BCD code minute and hour signals from counting circuits 14 and 15, or the BCD code minute and hour signals from memory circuits I6 and 17 are applied todistributing circuit 20.
  • Said distributing circuit serves to convert the BCD signal applied thereto (including the BCD code second signal from carrying circuit 13 into sevensegment signals suitable for driving the seven-bar display devices 6.
  • switch S display panel 6 selectively displays either actual time or the contents of memory circuits 16 and 17 representative of the timer function.
  • Coincidence circuit 18 compares the signal stored in memory circuits 16 and 17 with the ongoing timekeeping signals from counting circuits 14 and 15, and upon coincidence, sends a signal to an amplifier A which drives an alarm device such as speaker SP, a buzzer or the like.
  • Switch and selecting circuit 19 serves a further purpose in connection with the use of push button switches S and S which correspond respectively to push button switches l and 2 of FIG. 1. Specifically, switch S and selecting circuit 19 serves to change over the function of switches S and S from time keeping to timer functions. Thus, when switch S is disposed in the timer position, display panel 6 provides a visual display of the setting of the timer function. At the same time, switches S and S may be utilized to set said timer function, by applying signals through selecting circuit 19 to each of memory circuits l6 and 17, switch S setting memory circuit 17 and switch S setting memory circuit 16.
  • switch S When switch S is in the watch setting, display panel 6 indicates actual time, and switches S and S perform time correction functions through selecting circuit 19 by applying suitable correction signals to counting circuits 14 and 15. Switch S serves to correct counting circuit 15, while S serves to correct counting circuit 14.
  • Switch S which corresponds to push button switch 4 is a system reset switch, while switch S which corresponds to push button switch 5, serves to stop the count of counting circuit 12, and at the same time, serves to alternately reset or begin counting, thus providing a means for correcting the second signal.
  • the timer function is performed by setting a time in the memory circuit and sounding an alarm when that time is reached.
  • a timer arrangement may be provided wherein the timer circuit includes a presetable counting circuit, the desired time period being set in memory circuits and the output of the memory circuits and the timer counting circuit being compared by a coincidence circuit.
  • the digital wrist watch in accordance with the invention has only five switches, it is possible to provide further functions on the watch since the provision of additional switches in conjunction with such further functions, such as day and date indications, will not unduly complicate the watch.
  • a digital wrist watch comprising a quartz oscillator for producing a high frequency time standard signal; counting circuit means coupled to said quartz oscillator for producing time keeping signals from said high frequency time standard signal, said counting circuit means including at least two counters, each said counter being adapted to count a specific unit of time; a display device means adapted for the digital display of time upon the application of driving signals thereto; selecting circuit means coupled to said at least two counters and adapted to receive time keeping signals therefrom; timer circuit means coupled to said selecting circuit means for performing a timer function and adapted to produce timer status signals representative of the setting of the timer circuit means; a manually operable selecting switch coupled to said selecting circuit means, said selecting circuit means being connected to receive said timer status signals and said time keeping signals and adapted to transmit one of said timer signals and said time keeping signals depending on the setting of said selecting switch, distributing circuit means connected intermediate said selecting circuit means and said display means for applying driving signals to said display means in response to the transmitted signals from said selecting circuit means, and at least two manually operable functional switches each of
  • timer circuit means includes at least two memory means each said memory means operatively associated with a one of said functional switches and coupled to said selecting circuit means for applying timer status signals thereto.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
US00325697A 1972-01-22 1973-01-22 Digital wrist watch having timer function Expired - Lifetime US3822547A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP805972A JPS5733557B2 (it) 1972-01-22 1972-01-22
JP806072A JPS4878975A (it) 1972-01-22 1972-01-22
JP47008061A JPS4878976A (it) 1972-01-22 1972-01-22

Publications (1)

Publication Number Publication Date
US3822547A true US3822547A (en) 1974-07-09

Family

ID=27277856

Family Applications (1)

Application Number Title Priority Date Filing Date
US00325697A Expired - Lifetime US3822547A (en) 1972-01-22 1973-01-22 Digital wrist watch having timer function

Country Status (7)

Country Link
US (1) US3822547A (it)
CH (1) CH85673A4 (it)
DE (1) DE2302978A1 (it)
FR (1) FR2169082B1 (it)
GB (1) GB1391235A (it)
HK (1) HK61276A (it)
MY (1) MY7700020A (it)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937004A (en) * 1973-05-28 1976-02-10 Citizen Watch Co., Ltd. Portable miniature type information treating device
US3946549A (en) * 1973-12-26 1976-03-30 Uranus Electronics, Inc. Electronic alarm watch
USD242774S (en) * 1975-04-03 1976-12-21 Ebauches S.A. Wrist watch
US4025774A (en) * 1975-06-16 1977-05-24 American Hospital Supply Corporation Timing apparatus including electronic calculator circuits
US4056709A (en) * 1974-06-14 1977-11-01 Kienzle Apparate Gmbh Taximeter indicator arrangement
US4074516A (en) * 1975-10-13 1978-02-21 Kabushiki Kaisha Daini Seikosha Alarm electronic timepiece
US4084104A (en) * 1975-03-26 1978-04-11 Kieninger & Obergfell, Fabrik Fur Technische Laufwerke Und Apparate Electric signaling arrangement for delivery of waking signals
US4089159A (en) * 1975-06-23 1978-05-16 Citizen Watch Company Limited Electronic timepiece
US4099371A (en) * 1974-10-04 1978-07-11 Citizen Watch Co., Ltd. Electronic optical display alarm timepiece
US4104861A (en) * 1975-11-11 1978-08-08 Kabushiki Kaisha Daini Seikosha Electronic stop watch
US4172360A (en) * 1975-10-14 1979-10-30 Kabushiki Kaisha Daini Seikosha Digital alarm timepiece
US4176515A (en) * 1976-10-09 1979-12-04 Quarz-Zeit Ag Electronic clock, particularly a quartz clock
US4228645A (en) * 1977-05-10 1980-10-21 Citizen Watch Company Limited Electronic timepiece equipped with alarm system
US4872005A (en) * 1988-01-04 1989-10-03 Motorola, Inc. Paging receiver capable of reminding a user of an important message event
US5119346A (en) * 1990-01-16 1992-06-02 Deborah J. Henderson Child alarm system
US5871406A (en) * 1997-09-23 1999-02-16 Worrell; W. Robert Golf swing timing process
US6335906B1 (en) * 1997-11-27 2002-01-01 Eta Sa Fabriques D'e Bauches Portable object, in particular a watch, including multiple selectable electronic modules
US6547434B1 (en) * 1998-01-12 2003-04-15 Derosa Eric Set starter timing device
US20130192514A1 (en) * 2012-01-27 2013-08-01 Jody Murdough Game score keeper
US9766594B2 (en) 2012-06-27 2017-09-19 Jody P. Murdough Scorekeeping device

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2560195C2 (de) * 1974-10-31 1985-07-11 Citizen Watch Co., Ltd., Tokio/Tokyo Elektronische Uhr
DE2560192C2 (de) * 1974-10-31 1986-02-13 Citizen Watch Co., Ltd., Tokio/Tokyo Elektronische Uhr
DE2560193C2 (de) * 1974-10-31 1985-07-11 Citizen Watch Co., Ltd., Tokio/Tokyo Elektronische Uhr
DE2560196C2 (de) * 1974-10-31 1986-02-27 Citizen Watch Co., Ltd., Tokio/Tokyo Elektronische Uhr
JPH0310916B2 (it) * 1974-10-31 1991-02-14 Citizen Watch Co Ltd
DE2560194C2 (de) * 1974-10-31 1986-02-27 Citizen Watch Co., Ltd., Tokio/Tokyo Elektronische Uhr
DE2560197C2 (de) * 1974-10-31 1986-08-07 Citizen Watch Co., Ltd., Tokio/Tokyo Elektronische Uhr
JPS5172471A (it) * 1974-12-20 1976-06-23 Seiko Instr & Electronics
CH586423B5 (it) * 1975-01-10 1977-03-31 Ebauches Sa
JPS5251974A (en) * 1975-10-24 1977-04-26 Seiko Instr & Electronics Ltd Digital alarm electronic watch
IT1071140B (it) * 1976-07-26 1985-04-02 Indesit Ricevitore di segnali radiofonici e/o televisivi
JPS547377A (en) * 1977-06-17 1979-01-20 Seiko Instr & Electronics Ltd Digital electronic watch
US4151723A (en) * 1977-07-15 1979-05-01 Emhart Industries, Inc. Refrigeration system control method and apparatus
IT1108014B (it) * 1978-07-18 1985-12-02 Borletti Spa Dispositivo elettronico utilizzabile come orologio e o come cronometro
JPS6245193Y2 (it) * 1980-02-19 1987-12-02
FR2565386B1 (fr) * 1984-06-01 1989-10-27 Seem Sarl Disque de stationnement electronique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576099A (en) * 1969-04-22 1971-04-27 Hamilton Watch Co Solid state timepiece having electro-optical time display
US3646751A (en) * 1969-12-05 1972-03-07 Detection Sciences Digital timing system
US3664116A (en) * 1970-04-06 1972-05-23 Gen Electric Digital clock controlled by voltage level of clock reference signal
US3672155A (en) * 1970-05-06 1972-06-27 Hamilton Watch Co Solid state watch

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH569320B5 (it) * 1970-03-06 1975-11-14 Rolex Montres
US3664117A (en) * 1970-06-05 1972-05-23 Gen Electric Non-time indicating number correction circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576099A (en) * 1969-04-22 1971-04-27 Hamilton Watch Co Solid state timepiece having electro-optical time display
US3646751A (en) * 1969-12-05 1972-03-07 Detection Sciences Digital timing system
US3664116A (en) * 1970-04-06 1972-05-23 Gen Electric Digital clock controlled by voltage level of clock reference signal
US3672155A (en) * 1970-05-06 1972-06-27 Hamilton Watch Co Solid state watch

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937004A (en) * 1973-05-28 1976-02-10 Citizen Watch Co., Ltd. Portable miniature type information treating device
US3946549A (en) * 1973-12-26 1976-03-30 Uranus Electronics, Inc. Electronic alarm watch
US4056709A (en) * 1974-06-14 1977-11-01 Kienzle Apparate Gmbh Taximeter indicator arrangement
US4099371A (en) * 1974-10-04 1978-07-11 Citizen Watch Co., Ltd. Electronic optical display alarm timepiece
US4084104A (en) * 1975-03-26 1978-04-11 Kieninger & Obergfell, Fabrik Fur Technische Laufwerke Und Apparate Electric signaling arrangement for delivery of waking signals
USD242774S (en) * 1975-04-03 1976-12-21 Ebauches S.A. Wrist watch
US4025774A (en) * 1975-06-16 1977-05-24 American Hospital Supply Corporation Timing apparatus including electronic calculator circuits
US4089159A (en) * 1975-06-23 1978-05-16 Citizen Watch Company Limited Electronic timepiece
US4074516A (en) * 1975-10-13 1978-02-21 Kabushiki Kaisha Daini Seikosha Alarm electronic timepiece
US4172360A (en) * 1975-10-14 1979-10-30 Kabushiki Kaisha Daini Seikosha Digital alarm timepiece
US4104861A (en) * 1975-11-11 1978-08-08 Kabushiki Kaisha Daini Seikosha Electronic stop watch
US4176515A (en) * 1976-10-09 1979-12-04 Quarz-Zeit Ag Electronic clock, particularly a quartz clock
US4228645A (en) * 1977-05-10 1980-10-21 Citizen Watch Company Limited Electronic timepiece equipped with alarm system
US4872005A (en) * 1988-01-04 1989-10-03 Motorola, Inc. Paging receiver capable of reminding a user of an important message event
US5119346A (en) * 1990-01-16 1992-06-02 Deborah J. Henderson Child alarm system
US5871406A (en) * 1997-09-23 1999-02-16 Worrell; W. Robert Golf swing timing process
US6335906B1 (en) * 1997-11-27 2002-01-01 Eta Sa Fabriques D'e Bauches Portable object, in particular a watch, including multiple selectable electronic modules
US6547434B1 (en) * 1998-01-12 2003-04-15 Derosa Eric Set starter timing device
US20130192514A1 (en) * 2012-01-27 2013-08-01 Jody Murdough Game score keeper
US9766594B2 (en) 2012-06-27 2017-09-19 Jody P. Murdough Scorekeeping device

Also Published As

Publication number Publication date
DE2302978A1 (de) 1973-07-26
GB1391235A (en) 1975-04-16
FR2169082A1 (it) 1973-09-07
CH85673A4 (fr) 1977-02-15
MY7700020A (en) 1977-12-31
FR2169082B1 (it) 1977-02-04
HK61276A (en) 1976-10-08

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