GB2018474A – Electronic timepiece
– Google Patents
GB2018474A – Electronic timepiece
– Google Patents
Electronic timepiece
Info
Publication number
GB2018474A
GB2018474A
GB7832902A
GB7832902A
GB2018474A
GB 2018474 A
GB2018474 A
GB 2018474A
GB 7832902 A
GB7832902 A
GB 7832902A
GB 7832902 A
GB7832902 A
GB 7832902A
GB 2018474 A
GB2018474 A
GB 2018474A
Authority
GB
United Kingdom
Prior art keywords
electronic timepiece
timepiece
electronic
Prior art date
1978-04-11
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
GB7832902A
Other versions
GB2018474B
(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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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.)
1978-04-11
Filing date
1978-08-10
Publication date
1979-10-17
1978-08-10
Application filed by Citizen Watch Co Ltd
filed
Critical
Citizen Watch Co Ltd
1979-10-17
Publication of GB2018474A
publication
Critical
patent/GB2018474A/en
1982-07-28
Application granted
granted
Critical
1982-07-28
Publication of GB2018474B
publication
Critical
patent/GB2018474B/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G04—HOROLOGY
G04G—ELECTRONIC TIME-PIECES
G04G99/00—Subject matter not provided for in other groups of this subclass
G—PHYSICS
G04—HOROLOGY
G04F—TIME-INTERVAL MEASURING
G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
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
G04G13/021—Details
G04G13/023—Adjusting the duration or amplitude of signals
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
G04G3/022—Circuits for deriving low frequency timing pulses from pulses of higher frequency the desired number of pulses per unit of time being obtained by adding to or substracting from a pulse train one or more pulses
G—PHYSICS
G04—HOROLOGY
G04G—ELECTRONIC TIME-PIECES
G04G9/00—Visual time or date indication means
G04G9/0023—Visual time or date indication means by light valves in general
G04G9/0029—Details
G04G9/0047—Details electrical, e.g. selection or application of the operating voltage
GB7832902A
1978-04-11
1978-08-10
Electronic timepiece
Expired
GB2018474B
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
JP4238378A
JPS54134669A
(en)
1978-04-11
1978-04-11
Electronic watch
Publications (2)
Publication Number
Publication Date
GB2018474A
true
GB2018474A
(en)
1979-10-17
GB2018474B
GB2018474B
(en)
1982-07-28
Family
ID=12634532
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB7832902A
Expired
GB2018474B
(en)
1978-04-11
1978-08-10
Electronic timepiece
Country Status (3)
Country
Link
US
(1)
US4370067A
(en)
JP
(1)
JPS54134669A
(en)
GB
(1)
GB2018474B
(en)
Families Citing this family (11)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS5816294A
(en)
*
1981-07-23
1983-01-29
セイコーインスツルメンツ株式会社
Wrist watch piezo-electric buzzer
US4565454A
(en)
*
1982-10-07
1986-01-21
Walters Richard J
Time display system
JP2698580B2
(en)
*
1987-03-09
1998-01-19
沖電気工業株式会社
Voltage / pulse width conversion circuit
JP3053658B2
(en)
*
1991-03-04
2000-06-19
沖電気工業株式会社
Voltage / pulse width modulation circuit
US5130565A
(en)
*
1991-09-06
1992-07-14
Xerox Corporation
Self calibrating PWM utilizing feedback loop for adjusting duty cycles of output signal
US5502771A
(en)
*
1995-03-10
1996-03-26
Delfitz, Inc.
Clock radio volume control appraratus
US5828717A
(en)
*
1995-03-28
1998-10-27
Matsushita Electric Industrial Co. Ltd.
Time counting circuit and counter circuit
US5835552A
(en)
*
1995-11-13
1998-11-10
Matsushita Electric Industrial Co.,Ltd.
Time counting circuit and counter circuit
US6086244A
(en)
*
1997-03-20
2000-07-11
Stmicroelectronics, Inc.
Low power, cost effective, temperature compensated, real time clock and method of clocking systems
GB2358490B
(en)
*
1999-12-29
2004-08-11
Nokia Mobile Phones Ltd
A clock
FR2889378B1
(en)
*
2005-07-29
2007-09-28
Atmel Nantes Sa Sa
DEVICE FOR COMPARING AN INPUT SIGNAL WITH A SETPOINT, AND CORRESPONDING ELECTRONIC CIRCUIT
Family Cites Families (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CH554015A
(en)
*
1971-10-15
1974-09-13
JPS5217397B2
(en)
*
1971-12-24
1977-05-14
US3999370A
(en)
*
1973-02-10
1976-12-28
Citizen Watch Co., Ltd.
Temperature compensated electronic timepiece
US3938316A
(en)
*
1973-02-10
1976-02-17
Citizen Watch Co., Ltd.
Temperature compensated electronic timepiece
CH616297B
(en)
*
1974-09-16
Centre Electron Horloger
GARDE-TEMPS COMPENSE EN FONCTION D’AU MOINS UN PARAMETRE PHYSIQUE D’ENVIRONNEMENT.
JPS6015905B2
(en)
*
1975-06-18
1985-04-22
セイコーエプソン株式会社
electronic clock
US4143362A
(en)
*
1977-05-27
1979-03-06
Motorola, Inc.
High resolution auto-zero circuit for analog-to-digital converter
JPS5473671A
(en)
*
1977-11-25
1979-06-13
Seiko Epson Corp
Semiconductor integrated circuit for watch
1978
1978-04-11
JP
JP4238378A
patent/JPS54134669A/en
active
Pending
1978-08-10
GB
GB7832902A
patent/GB2018474B/en
not_active
Expired
1980
1980-05-06
US
US06/147,006
patent/US4370067A/en
not_active
Expired – Lifetime
Also Published As
Publication number
Publication date
JPS54134669A
(en)
1979-10-19
US4370067A
(en)
1983-01-25
GB2018474B
(en)
1982-07-28
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Legal Events
Date
Code
Title
Description
1988-03-30
PCNP
Patent ceased through non-payment of renewal fee
