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GB2019054A - A Portable Time-Code Receiver Clock - Google Patents

A Portable Time-Code Receiver Clock

Info

Publication number
GB2019054A
GB2019054A GB7914310A GB7914310A GB2019054A GB 2019054 A GB2019054 A GB 2019054A GB 7914310 A GB7914310 A GB 7914310A GB 7914310 A GB7914310 A GB 7914310A GB 2019054 A GB2019054 A GB 2019054A
Authority
GB
United Kingdom
Prior art keywords
signal
clock
time
oscillator
decoders
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
GB7914310A
Other versions
GB2019054B (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.)
Helsby N C
Original Assignee
Helsby N C
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 Helsby N C filed Critical Helsby N C
Priority to GB7914310A priority Critical patent/GB2019054B/en
Publication of GB2019054A publication Critical patent/GB2019054A/en
Application granted granted Critical
Publication of GB2019054B publication Critical patent/GB2019054B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R20/00—Setting the time according to the time information carried or implied by the radio signal
    • G04R20/08—Setting the time according to the time information carried or implied by the radio signal the radio signal being broadcast from a long-wave call sign, e.g. DCF77, JJY40, JJY60, MSF60 or WWVB
    • G04R20/12—Decoding time data; Circuits therefor
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R20/00—Setting the time according to the time information carried or implied by the radio signal
    • G04R20/08—Setting the time according to the time information carried or implied by the radio signal the radio signal being broadcast from a long-wave call sign, e.g. DCF77, JJY40, JJY60, MSF60 or WWVB
    • G04R20/10—Tuning or receiving; Circuits therefor

Landscapes

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

Abstract

A portable clock comprises a superhetrodyne receiver 10 for receiving and detecting a transmitted time signal (such as the 60 kHz MSF slow-code signal) and a pre-settable digital clock 14 driving a display 15. Time and date decoders 12 and 13 decode the detected signal for pre- setting the clock 14 to accord with the transmitted time signal. A single crystal-controlled oscillator 11 supplies a timing reference to the decoders 12 and 13, and serves as a time-base for the pre-settable clock. Moreover, the oscillator 11 serves as the local oscillator for mixing with the receive r.f. signal in the superhetrodyne receiver 10. An error-detecting circuit (Fig 3 not shown) may serve to check that there is a minimum period of substantially no carrier of the received time signal every second, but in the absence of such a minimum period presetting is inhibited. The crystal- controlled oscillator 11 may also serve as a timing reference for such an error-detecting circuit. <IMAGE>
GB7914310A 1978-01-25 1979-04-24 Portable timecode receiver clock Expired GB2019054B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7914310A GB2019054B (en) 1978-01-25 1979-04-24 Portable timecode receiver clock

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB291678 1978-01-25
GB7914310A GB2019054B (en) 1978-01-25 1979-04-24 Portable timecode receiver clock

Publications (2)

Publication Number Publication Date
GB2019054A true GB2019054A (en) 1979-10-24
GB2019054B GB2019054B (en) 1982-04-21

Family

ID=26237844

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7914310A Expired GB2019054B (en) 1978-01-25 1979-04-24 Portable timecode receiver clock

Country Status (1)

Country Link
GB (1) GB2019054B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4543657A (en) * 1980-09-16 1985-09-24 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Synchronizing of clocks
EP0180155A2 (en) * 1984-10-30 1986-05-07 Junghans Uhren Gmbh Radio-controlled watch
FR2579335A1 (en) * 1985-03-23 1986-09-26 Junghans Uhren Gmbh Radio clock allowing addition of auxiliary items
GB2297854A (en) * 1995-02-07 1996-08-14 Nokia Mobile Phones Ltd Real time clock
US5737323A (en) * 1995-02-07 1998-04-07 Nokia Mobile Phones Limited Radio telephone
US5758278A (en) * 1995-02-07 1998-05-26 Nokia Mobile Phones Limited Method and apparatus for periodically re-activating a mobile telephone system clock prior to receiving polling signals
DE102004043635A1 (en) * 2004-04-01 2005-10-20 Conti Temic Microelectronic Method and device for demodulation

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4543657A (en) * 1980-09-16 1985-09-24 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Synchronizing of clocks
EP0180155A2 (en) * 1984-10-30 1986-05-07 Junghans Uhren Gmbh Radio-controlled watch
EP0180155A3 (en) * 1984-10-30 1988-03-09 Junghans Uhren Gmbh Radio-controlled watch
FR2579335A1 (en) * 1985-03-23 1986-09-26 Junghans Uhren Gmbh Radio clock allowing addition of auxiliary items
GB2297854A (en) * 1995-02-07 1996-08-14 Nokia Mobile Phones Ltd Real time clock
US5737323A (en) * 1995-02-07 1998-04-07 Nokia Mobile Phones Limited Radio telephone
US5740129A (en) * 1995-02-07 1998-04-14 Nokia Mobile Phones Limited Real time clock
US5758278A (en) * 1995-02-07 1998-05-26 Nokia Mobile Phones Limited Method and apparatus for periodically re-activating a mobile telephone system clock prior to receiving polling signals
GB2297854B (en) * 1995-02-07 1999-04-07 Nokia Mobile Phones Ltd Real time clock
DE102004043635A1 (en) * 2004-04-01 2005-10-20 Conti Temic Microelectronic Method and device for demodulation

Also Published As

Publication number Publication date
GB2019054B (en) 1982-04-21

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19990423