GB1279274A - Electronically controlled timepiece - Google Patents

Electronically controlled timepiece

Info

Publication number
GB1279274A
GB1279274A GB41857/69A GB4185769A GB1279274A GB 1279274 A GB1279274 A GB 1279274A GB 41857/69 A GB41857/69 A GB 41857/69A GB 4185769 A GB4185769 A GB 4185769A GB 1279274 A GB1279274 A GB 1279274A
Authority
GB
United Kingdom
Prior art keywords
pairs
frequency
transistors
conducting
metal oxide
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
GB41857/69A
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.)
Hamilton Watch Co
Original Assignee
Hamilton Watch 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 Hamilton Watch Co filed Critical Hamilton Watch Co
Publication of GB1279274A publication Critical patent/GB1279274A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G3/00—Producing timing pulses
    • G04G3/02—Circuits for deriving low frequency timing pulses from pulses of higher frequency

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

1279274 Transistor oscillators HAMILTON WATCH CO 21 Aug 1969 [16 Oct 1968] 41857/69 Heading H3T [Also in Division G3] An electronic frequency standard for use in driving a watch (see Division G3) comprises a free-running multivibrator (Fig. 2) which includes two pairs 20, 22 of metal oxide semiconductor transistors. Each pair comprises one N-type and one P-type transistor, the former being non-conducting when the latter is conducting and vice versa. The circuit produces complementary, square wave outputs F and F at a frequency dependent on the values of a resistor 70 and a capacitor 68. The outputs F and F are fed to a frequency divider comprising a chain of identical stages each of which divides the frequencies of its two inputs by two until a signal having a frequency of one Hz is obtained. Each stage (Fig. 5) consists of logic pairs 106, 124, 144, 146 of metal oxide semi-conductor transistors and pairs 78, 92, 140, 142 of similar transistors which provide feedback connections between logic pairs. Integrated circuit construction is employed.
GB41857/69A 1968-10-16 1969-08-21 Electronically controlled timepiece Expired GB1279274A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76807668A 1968-10-16 1968-10-16

Publications (1)

Publication Number Publication Date
GB1279274A true GB1279274A (en) 1972-06-28

Family

ID=25081454

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41857/69A Expired GB1279274A (en) 1968-10-16 1969-08-21 Electronically controlled timepiece

Country Status (5)

Country Link
US (1) US3560998A (en)
CH (1) CH1551069A4 (en)
DE (1) DE1952203B2 (en)
FR (1) FR2020844A1 (en)
GB (1) GB1279274A (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1100669A4 (en) * 1969-07-18 1971-10-15
US3672155A (en) * 1970-05-06 1972-06-27 Hamilton Watch Co Solid state watch
DE2133371A1 (en) * 1970-07-06 1972-01-13 Suwa Seikosha Kk Quartz crystal watch
US3938318A (en) * 1970-08-31 1976-02-17 Texas Instruments Incorporated Wrist watches
US3664118A (en) * 1970-09-09 1972-05-23 Hamilton Watch Co Electronically controlled timepiece using low power mos transistor circuitry
US3943697A (en) * 1970-12-14 1976-03-16 Kabushiki Kaisha Suwa Seikosha Electronic watch
GB1343660A (en) * 1970-12-29 1974-01-16 Suwa Seikosha Kk Timepiece
GB1338983A (en) * 1971-02-10 1973-11-28 Suwa Seikosha Kk Electronic watches
US3839856A (en) * 1971-05-14 1974-10-08 Time Computer Solid state watch with calendar display
JPS4846359A (en) * 1971-10-12 1973-07-02
JPS4857678A (en) * 1971-11-18 1973-08-13
CH561986A5 (en) * 1971-11-22 1975-05-15 Centre Electron Horloger
JPS4899770U (en) * 1972-02-23 1973-11-24
JPS5511022B2 (en) * 1972-02-25 1980-03-21
US4114049A (en) * 1972-02-25 1978-09-12 Tokyo Shibaura Electric Co., Ltd. Counter provided with complementary field effect transistor inverters
JPS4963371A (en) * 1972-10-19 1974-06-19
US3851277A (en) * 1972-12-27 1974-11-26 Tokyo Shibaura Electric Co Astable multivibrator using insulated-gate field effect transistors
JPS4991279A (en) * 1972-12-29 1974-08-31
JPS49116174U (en) * 1973-01-29 1974-10-03
US3992874A (en) * 1973-06-08 1976-11-23 Texas Instruments Incorporated Wrist watch
US3930169A (en) * 1973-09-27 1975-12-30 Motorola Inc Cmos odd multiple repetition rate divider circuit
GB1475841A (en) * 1974-04-24 1977-06-10 Suwa Seikosha Kk Electronic timepiece
JPS5651590B2 (en) * 1974-09-24 1981-12-07
US4025800A (en) * 1975-06-16 1977-05-24 Integrated Technology Corporation Binary frequency divider
US4181862A (en) * 1976-09-27 1980-01-01 Rca Corporation High speed resettable dynamic counter
JPS5263370A (en) * 1976-11-29 1977-05-25 Seiko Epson Corp Digital display wristwatch
JPS52142872U (en) * 1977-04-14 1977-10-29
US4214173A (en) * 1978-03-03 1980-07-22 Standard Microsystems Corp. Synchronous binary counter utilizing a pipeline toggle signal propagation technique

Also Published As

Publication number Publication date
US3560998A (en) 1971-02-02
CH1551069A4 (en) 1973-01-31
DE1952203B2 (en) 1977-07-14
FR2020844A1 (en) 1970-07-17
DE1952203A1 (en) 1970-04-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee