CA930033A - Digital clock controlled by voltage level of clock reference signal - Google Patents

Digital clock controlled by voltage level of clock reference signal

Info

Publication number
CA930033A
CA930033A CA107210A CA107210A CA930033A CA 930033 A CA930033 A CA 930033A CA 107210 A CA107210 A CA 107210A CA 107210 A CA107210 A CA 107210A CA 930033 A CA930033 A CA 930033A
Authority
CA
Canada
Prior art keywords
clock
reference signal
voltage level
controlled
digital
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
CA107210A
Other versions
CA107210S (en
Inventor
G. Emerson Paul
C. Mcintosh Bruce
J. Thamhain Hans
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of CA930033A publication Critical patent/CA930033A/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
    • G04G9/10—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques by controlling light sources, e.g. electroluminescent diodes
    • G04G9/107—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques by controlling light sources, e.g. electroluminescent diodes provided with means for displaying at will a time indication or a date or a part thereof
    • 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
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G04G19/02—Conversion or regulation of current or voltage
    • G04G19/06—Regulation
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Clocks (AREA)
CA107210A 1970-04-06 1971-03-09 Digital clock controlled by voltage level of clock reference signal Expired CA930033A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2593070A 1970-04-06 1970-04-06

Publications (1)

Publication Number Publication Date
CA930033A true CA930033A (en) 1973-07-10

Family

ID=21828841

Family Applications (1)

Application Number Title Priority Date Filing Date
CA107210A Expired CA930033A (en) 1970-04-06 1971-03-09 Digital clock controlled by voltage level of clock reference signal

Country Status (5)

Country Link
US (1) US3664116A (en)
CA (1) CA930033A (en)
CH (2) CH534386A (en)
DE (1) DE2116433A1 (en)
GB (1) GB1341252A (en)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1285012A (en) * 1970-07-30 1972-08-09 Seiko Instr & Electronics Digital electronic timepiece
US3744235A (en) * 1970-12-09 1973-07-10 S Kratomi Timepiece indicating time by generated images in sets
GB1339403A (en) * 1971-02-03 1973-12-05 Suwa Seikosha Kk Timepiece
IT952097B (en) * 1971-03-08 1973-07-20 Suwa Seikosha Kk IMPROVEMENT IN NUMERICAL INDICATION TIME MEASUREMENT SYSTEMS
US3986333A (en) * 1971-03-22 1976-10-19 Sharp Kabushiki Kaisha Electronic digital clock
GB1391995A (en) * 1971-04-27 1975-04-23 Seikosha Kk Electric timepieces
US3823551A (en) * 1971-05-03 1974-07-16 Riehl Electronics Corp Solid state electronic timepiece
US3817020A (en) * 1971-05-04 1974-06-18 Nippon Denso Co Electronic digital clock
US3754392A (en) * 1971-05-17 1973-08-28 Motorola Inc Apparatus for driving a light emitting diode of horologic display
US3969886A (en) * 1971-06-30 1976-07-20 Kabushiki Kaisha Daini Seikosha Digital electronic watch for displaying both time and the time remaining within a preselected time period
JPS4847861A (en) * 1971-10-19 1973-07-06
GB1366794A (en) * 1971-12-02 1974-09-11 Seiko Instr & Electronics Electronic timepiece
GB1391235A (en) * 1972-01-22 1975-04-16 Suwa Seikosha Kk Digital wrist watch
US3813533A (en) * 1972-06-02 1974-05-28 Garrett Comtronics Corp Clock calculator
JPS4969361A (en) * 1972-11-06 1974-07-04
JPS5548273B2 (en) * 1973-01-22 1980-12-04
US3803827A (en) * 1973-02-01 1974-04-16 Time Computer Solid state electronic wristwatch
US3869854A (en) * 1973-05-10 1975-03-11 James A Church Solid state electronic control
DE2425254C3 (en) * 1973-05-28 1980-11-20 Citizen Watch Co., Ltd., Tokio Portable electronic watch
US4065915A (en) * 1973-06-11 1978-01-03 Farnbach John S Binary counting system
US3918250A (en) * 1973-10-10 1975-11-11 David N Torresdal Multi-channel digital clock
US3943288A (en) * 1973-10-23 1976-03-09 Edgar D. Young Telephone incorporating binary coded decimal time display
US3946549A (en) * 1973-12-26 1976-03-30 Uranus Electronics, Inc. Electronic alarm watch
US4033109A (en) * 1974-11-21 1977-07-05 Tokyo Shibaura Electric Co., Ltd. Time correction circuits for electronic timepieces
GB1523128A (en) * 1974-12-27 1978-08-31 Kienzle Uhrenfabriken Gmbh Electronic digital clocks
JPS51102455A (en) * 1975-03-05 1976-09-09 Funai Electric Co DENSHITAIMA SOCHI
US3961473A (en) * 1975-03-06 1976-06-08 George Hung Electronic chess timer
JPS51114580A (en) * 1975-03-31 1976-10-08 Funai Denki Kk Electronic timer apparatus
US4027470A (en) * 1975-04-04 1977-06-07 Friedman Eliot I Digital timer circuit
JPS522563A (en) * 1975-06-24 1977-01-10 Seiko Instr & Electronics Ltd Electronic clock with alarm
US4320478A (en) * 1975-07-02 1982-03-16 Motorola, Inc. Digital watch
US4095182A (en) * 1975-10-08 1978-06-13 Cybernet Electronic Corporation Display device for transceiver and like
JPS5246860A (en) * 1975-10-13 1977-04-14 Seiko Instr & Electronics Ltd Alarm electronic clock
JPS5258972A (en) * 1975-11-11 1977-05-14 Seiko Instr & Electronics Ltd Electronic stopwatch
US4047375A (en) * 1975-11-17 1977-09-13 Allan Wulff Darkroom timer
JPS52109974A (en) * 1976-03-11 1977-09-14 Seiko Instr & Electronics Ltd Digital alarm watch
DE2645744A1 (en) * 1976-10-09 1978-04-13 Quarz Zeit Ag ELECTRONIC CLOCK, IN PARTICULAR QUARTZ CLOCK
US4185283A (en) * 1978-01-09 1980-01-22 Clark Lloyd D Multiple character word indication system employing sequential sensible indicia
US4201038A (en) * 1978-04-25 1980-05-06 Kabushiki Kaisha Daini Seikosha Alarm electronic watch
FR2492551B1 (en) * 1980-10-21 1985-06-07 Suisse Horlogerie METHOD FOR COMPARING A TIMETABLE AND THE CONTENT OF A REGISTER IN A REMINDER CLOCK PIECE, CIRCUIT FOR ITS IMPLEMENTATION AND USE OF THIS CIRCUIT
US4444512A (en) * 1981-10-21 1984-04-24 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Method and circuit for comparing the timekeeping state and contents of a register in an electronic reminder giving timepiece

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA791946A (en) * 1968-08-13 Dome Peter Electronic watches

Also Published As

Publication number Publication date
CH534386A (en) 1972-08-31
CH478971A4 (en) 1972-08-31
US3664116A (en) 1972-05-23
GB1341252A (en) 1973-12-19
DE2116433A1 (en) 1971-11-04

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