EP0461849B1 - Empfänger für Personenrufsystem mit Uhrwerkfunktion - Google Patents

Empfänger für Personenrufsystem mit Uhrwerkfunktion Download PDF

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Publication number
EP0461849B1
EP0461849B1 EP19910305237 EP91305237A EP0461849B1 EP 0461849 B1 EP0461849 B1 EP 0461849B1 EP 19910305237 EP19910305237 EP 19910305237 EP 91305237 A EP91305237 A EP 91305237A EP 0461849 B1 EP0461849 B1 EP 0461849B1
Authority
EP
European Patent Office
Prior art keywords
time
indication
minutes
time indication
seconds
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 - Lifetime
Application number
EP19910305237
Other languages
English (en)
French (fr)
Other versions
EP0461849A2 (de
EP0461849A3 (en
Inventor
Yoshiki C/O Seiko Epson Corporation Minowa
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 Epson Corp
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Seiko Epson Corp
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Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of EP0461849A2 publication Critical patent/EP0461849A2/de
Publication of EP0461849A3 publication Critical patent/EP0461849A3/en
Application granted granted Critical
Publication of EP0461849B1 publication Critical patent/EP0461849B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/222—Personal calling arrangements or devices, i.e. paging systems
    • G08B5/223—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
    • G08B5/224—Paging receivers with visible signalling details
    • G08B5/228—Paging receivers with visible signalling details combined with other devices having a different main function, e.g. watches
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0076—Visual time or date indication means in which the time in another time-zone or in another city can be displayed at will
    • 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
    • G04R20/14—Setting the time according to the time information carried or implied by the radio signal the radio signal being a telecommunication standard signal, e.g. GSM
    • 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
    • G04R20/14—Setting the time according to the time information carried or implied by the radio signal the radio signal being a telecommunication standard signal, e.g. GSM
    • G04R20/18—Decoding time data; Circuits therefor

Definitions

  • the present invention relates to a receiver with a time piece function for use in a paging system.
  • An individual receiver for a paging system which is capable of displaying the time and which has a manually adjustable time piece function is known and is in practical use. Furthermore, a transmission service for a receiver having a time piece, which may be adjusted on the basis of an electro-magnetic wave exclusively transmitted for time adjusting purposes, is likely to be available in the near future.
  • the existing individual paging receivers having a time piece which may be adjusted by means of an electro-magnetic wave, are provided only with the capability of processing a single set of time information. Thus, if the receiver is to be used in a region where a time difference occurs, the time piece function must be manually adjusted.
  • the time would be automatically adjusted in accordance with the time difference of the region only at specified intervals when the electro-magnetic wave was broadcast.
  • the time would be automatically adjusted, there might be cases where the time of the user's original or home region was temporarily lost. Then again, if adjustment by the electro-magnetic wave was prohibited, the time would have to be manually adjusted and the precision time display guaranteed to a electro-magnetic-wave-adjusted time piece would not be obtained.
  • a radio controlled clock includes a register which stores an offset which is manually settable to represent values to be subtracted from a displayed time setting in order to indicate the time in a particular time zone.
  • the displayed time setting is obtained from data which is transmitted periodically and the accuracy of the display between receipt of the data is maintained by pulses derived from the broadcast information.
  • Other arrangements for maintaining offsets in systems using crystal controlled oscillators or other local clocks rather than broadcast information are disclosed in the Patents Abstracts of Japan volume 10 No. 290(JP-A-61 110 081) and volume 4 No. 142 (JPA-A-55 093 083).
  • a receiver for a paging system comprising a time receiving means for receiving standard time information, including data representing hours, minutes and seconds, first timepiece means for counting a first time indication, time adjusting means for adjusting the hours, minutes and seconds of said first time indication on the basis of the standard time information and characterised by further timepiece means for counting a second time indication which represents a different time from the first time indication to maintain a selected time interval from said first time indication and further time adjusting means responsive to the amount and sense of any correction made to the minutes and seconds counts of said first timepiece means in accordance with said standard time information to adjust the counts of said further timepiece means to maintain the difference in said selected time interval between the minutes counts, if any, of said first and further timepiece means.
  • a method of timekeeping by a receiver comprising: receiving standard time information, including data representing hours, minutes and seconds; counting a first time indication; and adjusting the hours, minutes and seconds of said first time indication on the basis of the standard time information; characterised by: effecting any corrections to the hours, minutes and seconds counts corresponding to the first time indication in accordance with said standard time information; counting a second time indication which represents a different time from the first time indication in accordance with said standard time information; counting a second time indication which represents a different time from the first time indication to maintain a selected time interval from said first time indication; and adjusting the counts corresponding to said second time indication in response to the amount and sense of any said corrections in accordance with said standard time information to maintain the difference in said selected time interval between the minutes counts, if any, of said first and further timepiece means.
  • Adjustment of the second time indication is effected on the basis of the standard time information received by the time receiving means and also on the basis of the deviation from the first time indication, which itself is adjusted on the basis of the standard time information. In this way, the second time indication may be adjusted whilst maintaining the difference in time between the first and second time indications.
  • the first time indication is preferably adjusted by the first time adjusting means on the basis of the standard time information so that the first time indication means always represents time based on the standard time information.
  • the second time indication is set to have a certain time difference relative to the first time indication, and is adjusted by the second time adjusting means both on the basis of the standard time information and on the basis of its set deviation from the first time indication.
  • the seconds or less of the second time indication may be adjusted by the seconds adjusting means on the basis of the standard time information and the minutes or more may be adjusted by the minutes adjusting means on the basis of the standard time information and the deviation in minutes or more from the first time indication.
  • a possible carry over of a plus or minus unit equal to or larger than one minute which may occur in this case is adjusted by the minutes adjusting means. The adjusting of the second time indication is thus accurately effected at all times.
  • FIG. 1 shows the construction of an individual receiver for a paging system, having a time signal receiving function according to the present invention.
  • the receiver comprises an antenna 1 incorporated into the receiver, a radio receiving circuit 2 and a demodulation circuit 3. It further includes a power source control circuit 4 for controlling the power supply to the radio receiving circuit 2 and the demodulation circuit 3, and a control section 5 for controlling the circuit 4.
  • the receiver also includes: a PROM 6 (programmable read only memory) for storing an individual call number, which is to be compared in the control section 5; and a RAM 9 (random access memory) for storing information transmitted in association with a fixed call number and standard time information.
  • An LCD driver circuit 10 is provided for driving an LCD 12 (liquid crystal display) for displaying information, and an oscillator circuit 11 containing a crystal oscillator generates a clock signal to be used in controlling the driver circuit 10.
  • a first clock counter 14 for clocking a first time indication and a second clock counter 15 for clocking a second time indication are respectively connected to the control section 5.
  • the power source control circuit 4, the control section 5, the RAM 9, the LCD driver circuit 10, the oscillator circuit 11, the first clock counter 14 and the second clock counter 15 constitute a control unit 16.
  • the LCD 12 respectively displays messages and the first or the second time indication which are stored in the RAM 9.
  • a warning device driver circuit 7 operates a warning device 8 such as a buzzer, an LED or a vibrator for informing the fact that a message has been received.
  • a switching device 13 is provided for manual operation of various functions of the receiver.
  • a standard time signal transmitted at a pre-determined radio frequency is received by the built in antenna 1 of the receiver and is supplied to the radio receiving circuit 2.
  • the received signal is demodulated and wave shaped in the circuit 2, and is then converted into a digital signal.
  • This digital signal is first error corrected in the demodulation circuit 3 and, after such error correction, a judgement is made as to whether it represents time information or not. If it is judged to be time information, the digital signal is supplied from the demodulation circuit 3 to the control unit 16.
  • Figure 2 is a flow chart for explanation of a time adjusting operation executed by the control unit 16 in the above receiver.
  • the seconds or less value of the second time indication is adjusted on the basis of the standard time signal while the minutes or more value thereof is corrected on the basis of the standard time signal and a deviation from the first time indication.
  • step ST1 first, a decision is made as to whether correct standard time information has been received. Since the effect of the standard time information being erroneous is substantial, the time information from the demodulation circuit 3 is judged again under stricter conditions. For example, when the number 15 is received as data for the month, it is considered to be erroneous information by the control unit 16, even though it constitutes data corrected by the demodulation circuit 3. If it is judged that correct standard time information has been received, the system proceeds to steps ST2 and ST5. If not, the system proceeds to "END" and the adjusting operation is terminated.
  • step ST1 If correct standard time information containing at least an hour, a minute and a second value is obtained at step ST1, such information is written in step ST2 into the first clock counter 14 and the control unit 16.
  • step ST3 When the standard time information is written into the first clock counter 14 in step ST2, a comparison is made in the control section 5 between such standard time information and the previous content of the first clock counter 14 so as to calculate whether the digit for the minutes in the first clock counter 14 is to be changed upwardly or downwardly or to be unchanged (step ST3).
  • the adjusted value thus obtained is stored in the RAM 9.
  • the first clock counter 14 after having its contents up-dated in step ST2 according to the received standard time information, continues counting on the basis of the clock signal from the oscillator 11, serving as its own source for time reference (step ST4).
  • the first time indication is counted accurately in the condition to which it has been adjusted most recently.
  • the second time indication is counted on the basis of the clock signal from the oscillator circuit 11, serving as its own source for time reference. This time indication is counted on the basis of at least hours and minutes, which have been input manually by means of the switching device 13.
  • the seconds or less of this second clock counter 15 are adjusted to the same value as in the standard time information evaluated in step ST1 (step ST5). If a time interval is required between the execution of step ST5 and the execution of step ST2, it is desirable that the information for seconds or less for the second clock counter 15 is up-dated by corresponding information from the first clock counter 14, which has already been up-dated according to the standard time information and is clocked continuously after that point in time.
  • step ST5 in addition to making an adjustment of the value for seconds or less as described, the value for minutes or more is also adjusted on the basis of the adjusted value obtained in step ST3.
  • supposing the first time indication is to be adjusted to 12 hours 00 minutes and 00 seconds p.m. when the first time indication is 11 hours 59 minutes and 59 seconds a.m. and the second time indication is 10 hours 59 minutes and 59 seconds a.m. If only the seconds or less of the second time indication is adjusted, the second time indication becomes 10 hours 59 minutes and 00 seconds a.m. Thus, the minutes value of the second time indication loses one minute in relation to the first time indication when compared with the times before the adjustment.
  • the first time indication is 12 hours 00 minutes and 00 seconds p.m. and the second time indication is 11 hours 00 minutes and 00 seconds a.m.
  • the second time indication becomes 11 hours 00 minutes and 59 seconds a.m. if only the value for the seconds or less of the second time indication is adjusted.
  • the minutes value of the second time indication gains one minute in relation to the first time indication.
  • the contents of the clock counter 15 for the second time indication are adjusted on the basis of the judgement made in step ST3 as to whether to carry over a gain or a reduction of one minute. If such a judgement is not performed, an occurrence of a one minute error may in the worst case be caused for each electro-magnetic wave adjustment. When such an error occurs, the relative difference between the digit for the minutes of the first time indication and the digit for the second time indication changes.
  • step ST6 the second time indication, which has been adjusted and includes the carry over of up to one minute, is clocked continuously thereafter on the basis of the clock signal from the oscillator circuit 11, serving as its own source of time reference in a manner similar to the first time indication.
  • step ST7 the first and second time indications, which have been adjusted, are selected for display by the switching device 13.
  • the first or second time indication which has been selected is then displayed in step ST8 by the LCD 12 by way of the LCD driver circuit 10.
  • Figure 3 shows an example of a display for the first time indication.
  • the month, day and year are displayed in the upper row while the hours, minutes and seconds of the first time indication are displayed in the lower row.
  • Figure 4 shows an example of a display for the second time indication.
  • the hours, minutes and seconds of the second time indication are shown in the lower row.
  • the month, day and year may also be displayed in a similar manner as shown in Figure 3.
  • the display arrangement may voluntarily be changed, for example, by inter-changing the upper row and the lower row and by inter-changing the month, day and year.
  • the second time indication can have the hours and minutes manually set, and the setting of a time differential relative to the first time indication is also possible.
  • the display of the seconds for the second time indication matches the display of the seconds for the first time indication.
  • the invention may be applied to a time piece function in which electro-magnetic wave adjustment is effected not only to the second but also to 1/10 or 1/100 of a second.
  • an individual paging receiver with a time piece function is capable of setting both a first time indication and a second time indication having a time difference from the first time indication such that the second time indication is up-dated on the basis of received standard time information while maintaining such a time difference. According to the present invention, therefore, even in a region where a time differential exists, the standard time information in that region may be used to keep the time in the original region of the user accurately.
  • the receiver is thus capable of correcting an internally measured time according to an externally measured standard time, and more particularly is capable of clocking two or more internally measured times, which may be set with a time difference, and of adjusting said times according to standard time information transmitted e.g. by an electro-magnetic wave.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Electric Clocks (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Electromechanical Clocks (AREA)

Claims (6)

  1. Empfänger für ein Rufsystem, umfassend
    - eine Zeitempfangseinrichtung (1, 2) zum Empfang von Standardzeitinformationen, welche Stunden, Minuten und Sekunden darstellende Daten beinhalten,
    - eine erste Zeitmeßeinrichtung (14) zur Zählung einer ersten Zeitangabe,
    - eine Zeiteinstellungseinrichtung (5) zur Einstellung der Stunden, Minuten und Sekunden der ersten Zeitangabe auf Grundlage der Standardzeitinformationen,
    gekennzeichnet durch eine weitere Zeitmeßeinrichtung (15) zur Zählung einer zweiten Zeitangabe, welche eine von der ersten Zeitangabe verschiedene Zeit darstellt, derart, daß ein ausgewählter Zeitabstand zur ersten Zeitangabe beibehalten wird, sowie durch eine weitere Zeiteinstellungseinrichtung (5), welche auf den Betrag und die Richtung jeder an den Minuten- und Sekundenzählungen der ersten Zeitmeßeinrichtung in Übereinstimmung mit den Standardzeitinformationen vorgenommenen Korrektur anspricht, um die Zählungen der weiteren Zeitmeßeinrichtung so einzustellen, daß die Differenz in dem ausgewählten Zeitabstand zwischen den Minutenzählungen - wenn vorhanden - der ersten und der weiteren Zeitmeßeinrichtung beibehalten wird.
  2. Empfänger nach Anspruch 1,
    dadurch gekennzeichnet, daß die weitere Zeiteinstellungseinrichtung eine Sekundeneinstelleinrichtung zur Einstellung der Werte für die Sekunden oder Kleineren der zweiten Zeitangabe auf Grundlage der Standardzeitinformationen sowie eine Minuteneinstelleinrichtung zur Einstellung der Werte für die Minuten oder Größeren der zweiten Zeitangabe auf Grundlage der Abweichung der Standardzeitinformationen von der ersten Zeitangabe umfaßt.
  3. Empfänger nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, daß eine Zeitanzeigeeinrichtung (12) zur wahlweisen Anzeige der ersten Zeitangabe und der zweiten Zeitangabe vorgesehen ist.
  4. Empfänger nach einem der Ansprüche 1 bis 3,
    dadurch gekennzeichnet, daß eine Zeitvertauschungseinrichtung (13) vorgesehen ist, um die erste Zeitangabe und die zweite Zeitangabe miteinander zu vertauschen.
  5. Empfänger nach einem der vorhergehenden Ansprüche, wobei der Empfänger ein einzelner selektiver Rufempfänger ist.
  6. Verfahren zur Zeitmessung durch einen Empfänger, umfassend:
    - Empfangen von Standardzeitinformationen, welche Stunden, Minuten und Sekunden darstellende Daten beinhalten (ST1),
    - Zählen einer ersten Zeitangabe (ST2) und
    - Einstellen der Stunden, Minuten und Sekunden der ersten Zeitangabe auf Grundlage der Standardzeitinformationen (ST3),
    gekennzeichnet durch:
    - Durchführen von Korrekturen an den der ersten Zeitangabe entsprechenden Stunden-, Minuten- und Sekundenzählungen in Übereinstimmung mit den Standardzeitinformationen (ST3),
    - Zählen einer zweiten Zeitangabe, welche eine von der ersten Zeitangabe verschiedene Zeit darstellt, derart, daß ein ausgewählter Zeitabstand zur ersten Zeitangabe (ST5) beibehalten wird, und
    - Einstellen der der zweiten Zeitangabe entsprechenden Zählungen nach Maßgabe des Betrags und der Richtung der Korrekturen in Übereinstimmung mit den Standardzeitinformationen, um die Differenz in dem ausgewählten Zeitabstand zwischen den Minutenzählungen - wenn vorhanden - der ersten und der weiteren Zeitmeßeinrichtung beizubehalten (ST5).
EP19910305237 1990-06-12 1991-06-11 Empfänger für Personenrufsystem mit Uhrwerkfunktion Expired - Lifetime EP0461849B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP153373/90 1990-06-12
JP15337390 1990-06-12
JP12050291A JP3584042B2 (ja) 1990-06-12 1991-05-24 時計機能付き受信機及び時刻修正方法
JP120502/90 1991-05-24

Publications (3)

Publication Number Publication Date
EP0461849A2 EP0461849A2 (de) 1991-12-18
EP0461849A3 EP0461849A3 (en) 1992-05-20
EP0461849B1 true EP0461849B1 (de) 1996-01-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910305237 Expired - Lifetime EP0461849B1 (de) 1990-06-12 1991-06-11 Empfänger für Personenrufsystem mit Uhrwerkfunktion

Country Status (4)

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EP (1) EP0461849B1 (de)
JP (1) JP3584042B2 (de)
DE (1) DE69116609T2 (de)
HK (1) HK107297A (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0744719B2 (ja) * 1993-03-29 1995-05-15 日本電気株式会社 無線選択呼出受信機
DE4336549A1 (de) * 1993-10-27 1995-05-04 Braun Ag Elektronische Uhr
JP2710557B2 (ja) * 1994-04-26 1998-02-10 静岡日本電気株式会社 無線選択呼出受信機の時刻補正方式
EP0703514B1 (de) 1994-09-24 1998-07-22 Eta SA Fabriques d'Ebauches Zeitmessung in einem Kommunikationssystem, Kommunikationssystem und Empfänger dafür
US5590092A (en) * 1995-01-05 1996-12-31 Ericsson Inc. Systems and methods for generating a current time of day in a cellular radiotelephone
GB2297854B (en) * 1995-02-07 1999-04-07 Nokia Mobile Phones Ltd Real time clock
GB2297883B (en) * 1995-02-07 1999-08-11 Nokia Mobile Phones Ltd Radio telephone
GB2297884B (en) * 1995-02-07 1999-05-26 Nokia Mobile Phones Ltd Radio telephone
JPH09102974A (ja) * 1995-10-05 1997-04-15 Nec Shizuoka Ltd 携帯無線機の時刻表示制御方式
JP3056084B2 (ja) * 1996-08-15 2000-06-26 静岡日本電気株式会社 無線選択呼出受信機
DE19635922A1 (de) * 1996-09-04 1998-03-12 Nokia Mobile Phones Ltd Anzeige der Uhrzeit in einem Funktelefon
JP2918033B2 (ja) * 1996-12-18 1999-07-12 日本電気株式会社 自動時刻修正機能付き無線選択呼出受信機
DE19712914A1 (de) * 1997-03-27 1998-10-01 Junghans Uhren Gmbh Verfahren und Vorrichtung zur Anzeige von Informationen insbesondere von Nachrichten, Daten oder dergleichen
JP3225915B2 (ja) 1998-02-19 2001-11-05 株式会社デンソー 移動通信端末及び移動通信システム
JP4669671B2 (ja) * 2004-06-08 2011-04-13 シチズンホールディングス株式会社 電波修正時計および電子機器
JP4725978B2 (ja) * 2005-04-11 2011-07-13 セイコーインスツル株式会社 時刻証明サーバ、時刻証明方法、及び時刻証明プログラム
JP5421944B2 (ja) * 2011-03-08 2014-02-19 セイコークロック株式会社 電子時計

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0372432A2 (de) * 1988-12-08 1990-06-13 Junghans Uhren Gmbh Autonome Funkuhr

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US4204398A (en) * 1977-09-16 1980-05-27 Lemelson Jerome H Method and means for automatically setting timepieces in a time zone
JPS5593083A (en) * 1979-01-09 1980-07-15 Sanyo Electric Co Ltd Electronic watch with delay function
JPS61110081A (ja) * 1984-11-02 1986-05-28 Sanyo Electric Co Ltd 世界時計
ATE149261T1 (de) * 1984-12-05 1997-03-15 Seiko Corp Uhr mit personenrufvorrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0372432A2 (de) * 1988-12-08 1990-06-13 Junghans Uhren Gmbh Autonome Funkuhr

Also Published As

Publication number Publication date
EP0461849A2 (de) 1991-12-18
JPH04230890A (ja) 1992-08-19
HK107297A (en) 1997-08-22
JP3584042B2 (ja) 2004-11-04
EP0461849A3 (en) 1992-05-20
DE69116609D1 (de) 1996-03-07
DE69116609T2 (de) 1996-05-30

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