GB2002982B - Quartz crystal timepiece - Google Patents

Quartz crystal timepiece

Info

Publication number
GB2002982B
GB2002982B GB7833139A GB7833139A GB2002982B GB 2002982 B GB2002982 B GB 2002982B GB 7833139 A GB7833139 A GB 7833139A GB 7833139 A GB7833139 A GB 7833139A GB 2002982 B GB2002982 B GB 2002982B
Authority
GB
United Kingdom
Prior art keywords
quartz crystal
crystal timepiece
timepiece
quartz
crystal
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
GB7833139A
Other versions
GB2002982A (en
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 GB2002982A publication Critical patent/GB2002982A/en
Application granted granted Critical
Publication of GB2002982B publication Critical patent/GB2002982B/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/027Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using frequency conversion means which is variable with temperature, e.g. mixer, frequency divider, pulse add/substract logic circuit
    • GPHYSICS
    • G04HOROLOGY
    • G04FTIME-INTERVAL MEASURING
    • G04F5/00Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
    • G04F5/06Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K3/00Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/027Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
    • H03K3/03Astable circuits
    • H03K3/0307Stabilisation of output, e.g. using crystal
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K5/00Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/22Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral
    • H03K5/26Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being duration, interval, position, frequency, or sequence

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Electric Clocks (AREA)
GB7833139A 1977-08-17 1978-08-11 Quartz crystal timepiece Expired GB2002982B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9854677A JPS5432363A (en) 1977-08-17 1977-08-17 Crystal oscillation type wristwatch

Publications (2)

Publication Number Publication Date
GB2002982A GB2002982A (en) 1979-02-28
GB2002982B true GB2002982B (en) 1982-01-13

Family

ID=14222677

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7833139A Expired GB2002982B (en) 1977-08-17 1978-08-11 Quartz crystal timepiece

Country Status (2)

Country Link
JP (1) JPS5432363A (en)
GB (1) GB2002982B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH650122GA3 (en) * 1981-12-17 1985-07-15
JPS60182143U (en) * 1984-05-14 1985-12-03 武内プレス工業株式会社 Multicolor curved dry offset printing machine

Also Published As

Publication number Publication date
JPS5432363A (en) 1979-03-09
GB2002982A (en) 1979-02-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920811