FR2277510A7 - Timepiece running speed measuring system - using counters connected to reference oscillator and to timepiece - Google Patents

Timepiece running speed measuring system - using counters connected to reference oscillator and to timepiece

Info

Publication number
FR2277510A7
FR2277510A7 FR7519798A FR7519798A FR2277510A7 FR 2277510 A7 FR2277510 A7 FR 2277510A7 FR 7519798 A FR7519798 A FR 7519798A FR 7519798 A FR7519798 A FR 7519798A FR 2277510 A7 FR2277510 A7 FR 2277510A7
Authority
FR
France
Prior art keywords
timepiece
measuring system
reference oscillator
count
running speed
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
FR7519798A
Other languages
French (fr)
Inventor
Andre Baud
Pierre Desarzens
Max Suter
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.)
IND HORLOGERE MANAGEMENT
Original Assignee
IND HORLOGERE MANAGEMENT
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 IND HORLOGERE MANAGEMENT filed Critical IND HORLOGERE MANAGEMENT
Application granted granted Critical
Publication of FR2277510A7 publication Critical patent/FR2277510A7/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
    • G04D7/12—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard
    • G04D7/1207—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring
    • G04D7/1214—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring for complete clockworks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)

Abstract

The measuring system, for indication the slow or fast running of the timepiece in seconds per day, operates by counting the pulses from a reference oscillator during a time interval dependant on the running of the timepiece. The counts are effected simultaneously, the first recording the reference frequency in order to determine an ideal time period, and the second up to a predetermined number. The second count is initiated by a signal from the timepiece and the count recorded by the second counter when the signal from the timepiece and the end of the ideal time period occur in a time interval less than the total time for the second count, represents the error of the timepiece.
FR7519798A 1974-07-05 1975-06-13 Timepiece running speed measuring system - using counters connected to reference oscillator and to timepiece Expired FR2277510A7 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH925174 1974-07-05

Publications (1)

Publication Number Publication Date
FR2277510A7 true FR2277510A7 (en) 1976-01-30

Family

ID=4349970

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7519798A Expired FR2277510A7 (en) 1974-07-05 1975-06-13 Timepiece running speed measuring system - using counters connected to reference oscillator and to timepiece

Country Status (1)

Country Link
FR (1) FR2277510A7 (en)

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