JPS5452578A - Stopwatch - Google Patents

Stopwatch

Info

Publication number
JPS5452578A
JPS5452578A JP11927877A JP11927877A JPS5452578A JP S5452578 A JPS5452578 A JP S5452578A JP 11927877 A JP11927877 A JP 11927877A JP 11927877 A JP11927877 A JP 11927877A JP S5452578 A JPS5452578 A JP S5452578A
Authority
JP
Japan
Prior art keywords
drive
display
control circuit
pulse
drive control
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.)
Granted
Application number
JP11927877A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6334436B2 (enrdf_load_stackoverflow
Inventor
Yasuo Kusumoto
Joichi Miyazaki
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
Priority to JP11927877A priority Critical patent/JPS5452578A/ja
Priority to GB7838949A priority patent/GB2005875B/en
Publication of JPS5452578A publication Critical patent/JPS5452578A/ja
Publication of JPS6334436B2 publication Critical patent/JPS6334436B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F10/00—Apparatus for measuring unknown time intervals by electric means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G04C3/146—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor incorporating two or more stepping motors or rotors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
JP11927877A 1977-10-04 1977-10-04 Stopwatch Granted JPS5452578A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP11927877A JPS5452578A (en) 1977-10-04 1977-10-04 Stopwatch
GB7838949A GB2005875B (en) 1977-10-04 1978-10-02 Chronographs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11927877A JPS5452578A (en) 1977-10-04 1977-10-04 Stopwatch

Publications (2)

Publication Number Publication Date
JPS5452578A true JPS5452578A (en) 1979-04-25
JPS6334436B2 JPS6334436B2 (enrdf_load_stackoverflow) 1988-07-11

Family

ID=14757413

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11927877A Granted JPS5452578A (en) 1977-10-04 1977-10-04 Stopwatch

Country Status (2)

Country Link
JP (1) JPS5452578A (enrdf_load_stackoverflow)
GB (1) GB2005875B (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54136875A (en) * 1978-04-17 1979-10-24 Seiko Epson Corp Analog electronic watch
JPS55160890A (en) * 1979-06-04 1980-12-15 Seiko Epson Corp Analog type chronograph
JPS56128480A (en) * 1980-02-12 1981-10-07 Ebauches Sa Versatile wrist watch
JPS58214873A (ja) * 1982-06-07 1983-12-14 Seiko Epson Corp 指針表示ストップウォッチ
JPS58214875A (ja) * 1982-06-08 1983-12-14 Seiko Epson Corp 指針表示式ストツプウオツチ
JPS58214874A (ja) * 1982-06-07 1983-12-14 Seiko Epson Corp 指針表示ストツプウオツチ
JPS5917892U (ja) * 1982-07-23 1984-02-03 セイコーエプソン株式会社 指針表示ストツプ・ウオツチ
JPS60259980A (ja) * 1985-05-31 1985-12-23 Seiko Epson Corp アナログ電子時計
JPS62265587A (ja) * 1987-05-01 1987-11-18 Seiko Epson Corp 指針表示ストップウォッチ
JPS63265188A (ja) * 1987-10-30 1988-11-01 Seiko Epson Corp アナログ多機能時計
JPS63277992A (ja) * 1988-03-24 1988-11-15 Seiko Epson Corp 指針表示ストップ・ウォッチ
JPH02161386A (ja) * 1989-11-13 1990-06-21 Seiko Epson Corp 時計の指針位置修正手段

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048217A1 (fr) * 1980-09-12 1982-03-24 Compagnie des Montres Longines, Francillon S.A. Pièce d'horlogerie électronique
CH634713B (fr) * 1981-07-09 Umberto Maglioli Piece d'horlogerie electronique.
CH649189GA3 (enrdf_load_stackoverflow) * 1981-12-28 1985-05-15
GB2124803B (en) * 1982-06-07 1985-12-11 Suwa Seikosha Kk Improvements in or relating to electronic analog timepieces
JPS5940290A (ja) * 1982-08-31 1984-03-05 Seiko Epson Corp アナログ多機能時計
CH654717GA3 (enrdf_load_stackoverflow) * 1983-06-23 1986-03-14
CH653846GA3 (enrdf_load_stackoverflow) * 1983-12-06 1986-01-31
DE69409612T2 (de) * 1993-12-13 1998-11-12 Isa Ag Arch Elektronischer analoger Chronograph mit Einholzeiger
CN1145860C (zh) * 1998-04-21 2004-04-14 精工爱普生株式会社 计时装置及计时方法
EP2485102A1 (fr) * 2011-02-02 2012-08-08 Patek Philippe SA Genève Dispositif d'affichage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4995656A (enrdf_load_stackoverflow) * 1972-10-13 1974-09-11
JPS5039584A (enrdf_load_stackoverflow) * 1973-07-10 1975-04-11

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4995656A (enrdf_load_stackoverflow) * 1972-10-13 1974-09-11
JPS5039584A (enrdf_load_stackoverflow) * 1973-07-10 1975-04-11

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54136875A (en) * 1978-04-17 1979-10-24 Seiko Epson Corp Analog electronic watch
JPS55160890A (en) * 1979-06-04 1980-12-15 Seiko Epson Corp Analog type chronograph
JPS56128480A (en) * 1980-02-12 1981-10-07 Ebauches Sa Versatile wrist watch
JPS58214873A (ja) * 1982-06-07 1983-12-14 Seiko Epson Corp 指針表示ストップウォッチ
JPS58214874A (ja) * 1982-06-07 1983-12-14 Seiko Epson Corp 指針表示ストツプウオツチ
JPS58214875A (ja) * 1982-06-08 1983-12-14 Seiko Epson Corp 指針表示式ストツプウオツチ
JPS5917892U (ja) * 1982-07-23 1984-02-03 セイコーエプソン株式会社 指針表示ストツプ・ウオツチ
JPS60259980A (ja) * 1985-05-31 1985-12-23 Seiko Epson Corp アナログ電子時計
JPS62265587A (ja) * 1987-05-01 1987-11-18 Seiko Epson Corp 指針表示ストップウォッチ
JPS63265188A (ja) * 1987-10-30 1988-11-01 Seiko Epson Corp アナログ多機能時計
JPS63277992A (ja) * 1988-03-24 1988-11-15 Seiko Epson Corp 指針表示ストップ・ウォッチ
JPH02161386A (ja) * 1989-11-13 1990-06-21 Seiko Epson Corp 時計の指針位置修正手段

Also Published As

Publication number Publication date
JPS6334436B2 (enrdf_load_stackoverflow) 1988-07-11
GB2005875B (en) 1982-03-31
GB2005875A (en) 1979-04-25

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