EP1253488A1 - Garde-temps avec mise à l'heure automatique et procédé de mise à l'heure d'un tel garde-temps - Google Patents
Garde-temps avec mise à l'heure automatique et procédé de mise à l'heure d'un tel garde-temps Download PDFInfo
- Publication number
- EP1253488A1 EP1253488A1 EP01401093A EP01401093A EP1253488A1 EP 1253488 A1 EP1253488 A1 EP 1253488A1 EP 01401093 A EP01401093 A EP 01401093A EP 01401093 A EP01401093 A EP 01401093A EP 1253488 A1 EP1253488 A1 EP 1253488A1
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- Prior art keywords
- time
- data
- rds
- timepiece
- local
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- 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
- G04R20/20—Setting the time according to the time information carried or implied by the radio signal the radio signal being an AM/FM standard signal, e.g. RDS
- G04R20/22—Tuning or receiving; Circuits therefor
-
- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R40/00—Correcting the clock frequency
- G04R40/06—Correcting the clock frequency by computing the time value implied by the radio signal
Definitions
- the present invention relates to the radiosynchronization of timepieces including time setting can be done automatically from a broadcast transmitter RDS type radio (acronym for "Radio Data System”).
- radio stations working in the modulation band of FM frequency according to the RDS standard transmit a time signal containing the time and the date, this signal being coded in a so-called CT part of a frame transmitted with the audio signal from the station.
- FIG. 1 of the accompanying drawings shows the standardized baseband spectrum emitted by stations of this type and frequency modulating a carrier P whose frequency is specific to the transmitting station.
- this spectrum presents a first band B1, monophonic, located between 0 and 15 kHz and in which is contained the sum of the audio signals of the right and left channels of the signal to pass.
- a pilot frequency FP of 19 kHz is used for decoding information stereophonic, while a second B2 band, stereophonic, ranging from 23 to 53 kHz contains the difference of the right and left audio signals.
- a third strip B3 contains RDS data. This spectrum band is centered on 57 kHz with a bandwidth between 54.5 and 59.5 kHz.
- the RDS radio reception device described in the aforementioned patent uses the temporal data of the RDS frame contained in the band B3 of the spectrum of the figure 1 to ensure the radiosynchronization of a clock provided as a timepiece in the receiver.
- the receiving device since the receiving device is primarily intended for listening to the audio broadcasts provided by the stations on which it can be tuned, it must include sound reception and restitution circuits which require operate a relatively large amount of energy.
- the receiving device must therefore have a power source of significant capacity of which radio synchronization takes only a very small part.
- a radio receiver for motor vehicle such a source is naturally readily available in the form from the vehicle's electrical system so that the amount of energy required to radio synchronization poses no concern to the designer.
- radio sets could also be supplied by the sector or a vehicle on-board network.
- a timepiece such as a wristwatch
- the available energy storage capacity in a timepiece is an ongoing problem that watchmakers are trying to respond by reducing, as much as possible, the consumption of all components of the timepiece in order to give it a as long as possible with a battery size compatible with that of the timepieces.
- Transposition of the concept described in the aforementioned patent to a timepiece carried in order to radiosynchronize it using RDS data thus comes up against a power supply problem, because we understand that a timepiece, such as a wristwatch, cannot house an energy source of sufficient capacity for the set, including a high frequency RDS radio receiver and circuits radio synchronized clockmakers can operate for a period of time reasonable.
- a stack of wristwatches for example, has typically with a voltage of 1.3 V capable of delivering a current of the order of 1 mA at maximum only, with a battery life preferably extending over a about a year or more.
- radio synchronized watches in which it is provided a radio receiver tuned to a station transmitting a time signal on a long wave carrier, typically between 40 and 80 kHz. These stations are exclusively dedicated to radio synchronization and, due to their frequency and their power, they cover a territory spanning several time zones at a time. The time when the watch equipped with the Adequate reception will be synchronized therefore does not necessarily correspond to the time zone time in which the watch user is located. On the other hand, consumption linked to the radio synchronization function of such a watch is relatively weak and in any case compatible with a period of normal use of the energy source of the shows. The reason is that the low radio frequency, carrying information from synchronization, allows the use of means whose consumption is low. This prior concept cannot therefore also provide a satisfactory solution for the realization of a timepiece carried radiosynchronized by the transmissions of radio stations high frequency radio transmitting time data according to the RDS standard.
- the invention aims to provide a timepiece equipped with a device for RDS radio reception for radiosynchronization using time data broadcasts provided by any station of the RDS type received by the device radio reception type RDS, the energy consumption of this timepiece being compatible with the energy storage capacity of the batteries usually used in watchmaking.
- the invention therefore relates to a timepiece as defined above, characterized in that it is of the worn type and in that the said RDS type radio reception device also includes means for rejecting the spectrum received from a transmitter at frequency modulation providing RDS data, except for the band frequencies in which RDS data is contained.
- the internal time of the timepiece can be corrected according to the local time provided by an RDS type transmitting station, the consumption of the radio reception part of the timepiece being reduced to minimum by the fact that only the frequency band on which are modulated the time data is extracted from the demodulated frequency band of the high frequency carrier received.
- an RDS type transmitting station has a reduced range, significantly less than the geographic area covered by a time zone, and as also RDS type stations are widely used in all geographical areas, the timepiece according to the invention will adopt in all circumstances the local time of the RDS type transmitting station which in the area of the watch, presents the necessary transmission power and sufficient for good reception. Change of time zone or switching from winter time to summer time or vice versa is therefore automatic with the timepiece according to the invention.
- local time means the data provided by the RDS part of the FM signal and which indicate the date as well that GMT universal time accompanied by the offset value corresponding to the geographical position of the transmitting station.
- said device for FM radio reception RDS type includes frequency lock loop in the reaction branch of which a band rejection filter is inserted does not not passing said frequency band comprising the type data RDS.
- a radio synchronized timepiece has been represented according to the invention, preferably produced in the form of a wristwatch, comprising a time base 1 providing hourly data. These are applied to time setting means 2 allowing manual adjustment of the timepiece by via a crown mechanism 3.
- Time data is loaded in memory means 4 and applied to a display device 5.
- the memory means 4 contain changing information for seconds, minutes and hours and other time information such as day, date, year etc. This data will hereinafter be called “internal data”. They correspond to the "internal time" of the timepiece.
- the worn timepiece also includes a radio reception device 7 RDS type.
- An antenna 8 capable of receiving the frequency modulated band FM stations transmitting RDS information, applies a received carrier signal to a low noise amplifier 9 whose output signal is transmitted to a loop frequency locking 10.
- the antenna 8 can be produced as described in EP 0 399 482, for example.
- the frequency locked loop 10 includes a mixer 11, a intermediate frequency amplification and filtering circuit 12, a circuit oversampling 13, a demodulator 14 of the frequency modulation, a local oscillator 15 controlled by a voltage and a band stop filter 16 mounted in the feedback branch of the frequency locked loop, the local oscillator 15 being looped back to the mixer 11.
- the frequency locked loop 10 can be similar to that described in US Patent 4,426,735, for example.
- the circuit of oversampling 13 can be that described in patent EP 0 624 959.
- the filter 16 is designed in such a way that it allows the entire spectrum of demodulated frequencies except the standard frequency band for the transmission of RDS information. Consequently, the filter 16 does not allow passage the frequency band between 54.5 and 59.5 kHz, centered on the frequency of 57 kHz. It can be carried out in accordance with the prescriptions described in a A.B. Williams and F.J. Taylor entitled “Electronic Filter Design Handbook” Design of Electronic Filters) and edited by McGraw-Hill, lnc, New York, E.U.A.
- the frequency locking loop 10 attenuates all frequencies in the modulated spectrum on the station carrier transmitter except the RDS B3 band ( Figure 1) which will appear as demodulated at the output of the demodulator 14.
- the latter is also connected to a RDS 17 demodulator, in which RDS information is demodulated and transmitted to a decoding circuit 18.
- the latter is designed to extract RDS information hourly data representing the time of a local RDS radio station in the reception area of which is the timepiece equipped like this has just been described.
- the receiving device 7 rejects the spectrum of the demodulated band contained in the received radio signal, with the exception of the band frequencies in which the CT frame of RDS information is coded.
- the radio reception device 7 of the timepiece according to the invention is lacking circuits for reproducing the audio information contained in the signal received so that its consumption can be limited to a bare minimum by being compatible with the lifespan usually required for a watch battery.
- the local time data provided by the decoding circuit 18 are introduced into memory means 19.
- the memory means 4 and 19 are connected to the microcontroller 6 responsible for operating them as described below.
- These time data contained in memory 19 are evolving and will be called “local data”. They correspond to a "local time” of the transmitter received at a instant.
- the microcontroller 6 can be programmed to implement an internal time control strategy and, the if necessary, setting the time of the timepiece.
- the microcontroller 6 can also be used to monitor changes in time between internal and internal hours local and, if this evolution shows a systematic running error of the timepiece, order a walking correction. Found in US Patent 3,895 486 the description of a timepiece having such correction means.
- step E1 looking for a transmitter providing a radio broadcast in frequency modulation comprising an RDS type signal.
- the microcontroller 6 applies an appropriate signal to the local oscillator 15 via a connection 20, the search being able to be carried out in varying the tuning frequency in steps of 100 kHz for example. An emitter will be retained, when the level of the received signal exceeds a predetermined value sufficient to ensure good detection of the RDS signal.
- the demodulated RDS type signal appears at the output of the demodulator 17.
- the corresponding signal is applied to the decoder 18 and the local time data are placed in the memory means 19 (step E2).
- Step E3 consists in comparing the internal current data placed in the memory means 4 with local data decoded and placed in the means memory 19. If the data match, the internal time of the timepiece corresponds to the local time of the transmitter in question and it is assumed that the timepiece indicates the correct time, no action being taken.
- the microcontroller 6 controls the standby of the receiver 7 (step E4) so as to save supply energy.
- the microcontroller 6 is preferably programmed in such a way that the receiver 7 is powered again after a predetermined period of time (step E5), so that a new internal time check can take place.
- the time interval between two consecutive checks of the internal time will be made adjustable via adjustment control 2, a display appropriate of this interval and its possible modification which may also have place on the display device 5.
- a manual order time control which can then be triggered at the discretion of the user of the timepiece, for example through a function assigned for this purpose to crown mechanism 3 and time-setting device 2.
- step E3 If, during step E3, the internal time does not correspond to the local time, it is naturally the timepiece may not have the correct time, but it is it is also possible that the transmitter found indicates an incorrect time. That is why in step E6, a new transmitter search is carried out. This research has place under the same conditions as during the execution of step E3.
- step E7 the second data local times provided by this transmitter are decoded and also placed in the memory means 19.
- the microcontroller 6 performs a comparison with the during step E8 between the local time provided by the previous transmitter and the time which has just been decoded and coming from the second transmitter.
- step E9 the microcontroller 6 then commands the storage of the difference ⁇ t between local time and internal time.
- the microcontroller 6 controls the standby of the receiver 7 (step E4), a new time check that can be performed after expiration of the standby.
- the timepiece has a so-called walk coherence function whereby the microcontroller 6 is at even to adjust the running of time base 1 when it has a drift as previously mentioned.
- the method described makes it possible to correct the works, for example, when a systematic error due to this drift is noted in the march of the timepiece.
- step E10 a test is carried out for check whether the ⁇ t values recorded successively, at regular time intervals, at during consecutive control processes increase or decrease systematically. If this is not the case, during a step E11, it is then proceeded to setting the time of the timepiece by correcting the internal time with the value .Delta.t.
- the microcontroller 6 can correct the internal time as soon as a deviation ⁇ t is detected (step E9).
- step E11 it is possible to correct not only the time, but also the date (day, month, year).
- the method according to the invention thus allows to reset the timepiece according to the time zones in which it is carried, this resetting can be carried out as and as the time zones are crossed, for example during a trip. It does not matter if the next time zone is shifted by half an hour by compared to the previous one as is the case for certain time zones, the time setting is also performed in this case. Of course, if the shift is one or more whole hours, just correct only the internal data hours as well as the hours display.
- step E12 the microcontroller 6 proceeds to adjustment of the walking convergence (step E12) by acting, in a manner known in itself on time base 1, before proceeding to setting the time of step E11.
- radiosynchronization as it comes to be described is particularly useful in worn timepieces such as wristwatches in which energy is supplied by a low capacity accumulator rechargeable by a generator powered by movements to wear. Indeed, such watches stop quickly when they are not being worn.
- the method according to the invention allows, when the watch is resumption, not only a precise time setting, but also the correction of other time data such as day, date and year.
- the method according to the invention also proves to be very effective for all timepieces powered by a battery. After changing the battery, the correction of its hourly data is then automatic and precise.
- the microcontroller 6 can conclude either a change from winter time to summer time or vice versa, or a time zone change due to the passage of the timepiece wearer from one time zone to another.
- FIG. 4 represents a variant of radio reception device 7A which, in addition to circuits similar to those of FIG. 2 and provided with the same references, comprises a phase shifter 21 connected to the output of the broadband amplifier 9.
- a first received modulated carrier signal, not phase shifted, is applied to a first mixer 22, while a second modulated carrier signal received, 90 ° phase shifted, is applied to a second mixer 23.
- the outputs of the two mixers 22 and 23 are connected to the amplification and filtering circuit 12 at intermediate frequency.
- timepiece worn must be interpreted broadly. Thus, it applies not only to wristwatches in particular, but also to any timepiece equipped with an energy source of low capacity, such as travel alarm clocks or the like.
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Abstract
Description
- une base de temps;
- des moyens pour afficher des données temporelles fournies par ladite base de temps; et
- des moyens pour corriger les données temporelles fournies; et dans lequel ledit dispositif de réception radio de type RDS comprend
- des moyens pour délivrer des données de type RDS tirées d'un spectre RDS reçu sur une porteuse à haute fréquence; et
- des moyens de commande qui, à partir des données de type RDS délivrées, commandent lesdits moyens de correction pour assurer la mise à l'heure du garde-temps.
- il comprend des moyens de décodage des données de type RDS, agencés pour n'extraire que les données temporelles parmi lesdites données de type RDS;
- lesdits moyens de commande comprennent des premiers moyens de mémoire pour enregistrer les données horaires internes fournies par ladite base de temps, des seconds moyens de mémoire pour enregistrer les données horaires locales décodées à partir des données de type RDS reçues d'au moins un émetteur à modulation de fréquence, et des moyens d'analyse pour comparer les données horaires locales aux données horaires internes et pour corriger l'heure du garde-temps, lorsque ces données locales et internes diffèrent.
- rechercher le signal d'émission d'un émetteur à modulation de fréquence dont le spectre contient des données de type RDS, démoduler les données de type RDS et décoder les données horaires contenues dans ces données RDS;
et, le cas échéant, rajuster l'heure interne dudit garde-temps, si ladite heure interne diffère desdites données horaires décodées,
caractérisé en ce que
ledit garde-temps est destiné à être porté, et
il consiste également à rejeter le spectre audio en bande de base reçu à partir dudit émetteur, à l'exception de la bande de fréquences dans laquelle sont contenues les données de type RDS.
- il est exécuté à des instants séparés par des intervalles de temps prédéterminés et il consiste à interrompre la réception dudit signal d'émission pendant lesdits intervalles prédéterminés;
- il consiste à capter le signal d'émission d'un premier émetteur à modulation de fréquence contenant des données de type RDS, à extraire de ce signal des premières données horaires locales, à comparer ces premières données horaires locales à l'heure interne dudit garde-temps, en cas d'écart entre les premières données horaires locales et l'heure interne, à capter au moins un second signal d'émission d'un second émetteur à modulation de fréquence contenant des données de type RDS, à extraire de ce second signal de type RDS des secondes données horaires locales, à comparer les secondes données horaires locales aux premières données horaires locales, et à procéder à la mise à l'heure dudit garde-temps pour n'annuler ledit écart que si les premières données horaires locales sont égales aux secondes données horaires locales;
- dans le cas où ladite heure interne diffère desdites données horaires locales d'une ou plusieurs heures entières, il consiste à ne corriger que l'information des heures dudit garde-temps;
- il consiste à analyser l'évolution de la différence entre ladite heure interne et lesdites données horaires locales et à exécuter une correction de la convergence de marche dudit garde-temps, si ladite différence indique une erreur systématique sur plusieurs opérations de comparaison successives de ladite heure interne et desdites données horaires locales.
- la figure 1 déjà décrite est un diagramme représentant le spectre normalisé en bande de base d'une émission radio FM comportant un signal de type RDS;
- la figure 2 est un schéma simplifié d'un garde-temps porté radiosynchronisé selon l'invention;
- la figure 3 est un organigramme illustrant le fonctionnement du garde-temps selon l'invention; et
- la figure 4 montre une variante de réalisation du dispositif de réception radio du garde-temps suivant l'invention.
Claims (9)
- Garde-temps équipé d'un dispositif de réception radio capable de décoder une information RDS (7; 7A) et comprenant:une base de temps (1),des moyens (5) pour afficher des données temporelles fournies par ladite base de temps, etdes moyens (2, 3) pour corriger lesdites données temporelles, et dans lequel ledit dispositif de réception radio (7; 7A) comprenddes moyens (10) pour délivrer des données de type RDS tirées d'un spectre RDS reçu sur une porteuse à haute fréquence; etdes moyens de commande (4, 6, 19) qui, à partir des données de type RDS délivrées commandent lesdits moyens de correction (2) pour assurer la mise à l'heure du garde-temps,il est destiné à être porté etledit dispositif de réception radio (7; 7A) comprend également des moyens (10) pour rejeter le spectre reçu à partir d'un émetteur à modulation de fréquence fournissant des données RDS, à l'exception de la bande de fréquences dans laquelle sont contenues les données de type RDS.
- Garde-temps suivant la revendication 1, caractérisé en ce que ledit dispositif de réception radio (7; 7A) comprend une boucle de verrouillage de fréquence (10) dans la branche de réaction de laquelle est inséré un filtre de rejet de bande (16) ne laissant pas passer ladite bande de fréquences comprenant les données de type RDS.
- Garde-temps suivant la revendication 2, caractérisé en ce qu'il comprend des moyens de décodage (18) des données de type RDS, agencés pour ne décoder que les données horaires locales parmi lesdites données de type RDS.
- Garde-temps suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que lesdits moyens de commande (4, 6, 19) comprennent:des premiers moyens de mémoire (4) pour enregistrer les données horaires internes fournies par ladite base de temps (1),des seconds moyens de mémoire (19) pour enregistrer les données horaires locales décodées à partir des données de type RDS reçues d'au moins un émetteur à modulation de fréquence, etdes moyens d'analyse (6) pour comparer les données horaires locales aux données horaires internes et pour corriger l'heure du garde-temps, lorsque ces données locales et internes diffèrent.
- Procédé de mise à l'heure d'un garde-temps par radiosynchronisation consistant à:rechercher le signal d'émission d'un émetteur à modulation de fréquence dont le spectre contient des données de type RDS,démoduler les données de type RDS et décoder les données horaires locales contenues dans ces données de type RDS,comparer l'heure interne dudit garde-temps aux données horaires locales ainsi décodées,
caractérisé en ce que
ledit garde-temps est destiné à être porté, et
il consiste également à rejeter le spectre audio en bande de base reçu à partir dudit émetteur, à l'exception de la bande de fréquences dans laquelle sont contenues les données de type RDS. - Procédé suivant la revendication 5, caractérisé en ce qu'il est exécuté à des instants séparés par des intervalles de temps prédéterminés, et
il consiste à interrompre la réception dudit signal d'émission pendant lesdits intervalles prédéterminés. - Procédé suivant l'une quelconque des revendications 5 et 6, caractérisé en ce qu'il consisteà capter le signal d'émission d'un premier émetteur à modulation de fréquence contenant des données de type RDS,à extraire de ce signal des premières données horaires locales,à comparer ces premières données horaires locales à l'heure interne dudit garde-temps,en cas d'écart entre les premières données horaires locales et l'heure interne, à capter au moins un second signal d'émission d'un second émetteur à modulation de fréquence contenant des données de type RDS,à extraire de ce second signal d'émission des secondes données horaires locales,à comparer les secondes données horaires locales aux premières données horaires locales, et
à procéder à la mise à l'heure dudit garde-temps pour n'annuler ledit écart que si les premières données horaires locales sont égales aux secondes données horaires locales. - Procédé suivant l'une quelconque des revendications 5 à 7, caractérisé en ce que, dans le cas où ladite heure interne diffère desdites données horaires locales d'une ou plusieurs heures entières, il consiste à ne corriger que l'information des heures dudit garde-temps.
- Procédé suivant l'une quelconque des revendications 5 à 8, caractérisé en ce qu'il consiste à analyser l'évolution de la différence entre ladite heure interne et lesdites données horaires locales et à exécuter une correction de la convergence de marche dudit garde-temps si ladite différence indique une erreur systématique sur plusieurs opérations de comparaison successives de ladite heure interne et desdites données horaires locales.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60127810T DE60127810T2 (de) | 2001-04-27 | 2001-04-27 | Zeithaltendes Gerät mit automatischer Zeitkorrektur und Verfahren zur Zeitkorrektur eines derartigen Gerätes |
EP01401093A EP1253488B1 (fr) | 2001-04-27 | 2001-04-27 | Garde-temps avec mise à l'heure automatique et procédé de mise à l'heure d'un tel garde-temps |
PCT/EP2002/004537 WO2002088849A1 (fr) | 2001-04-27 | 2002-04-24 | Garde-temps avec mise a l'heure automatique et procede de mise a l'heure d'un tel garde-temps |
JP2002586084A JP2004530132A (ja) | 2001-04-27 | 2002-04-24 | 自動時間設定を有するタイムキーパおよびそのための時間設定方法 |
US10/475,081 US7031696B2 (en) | 2001-04-27 | 2002-04-24 | Timekeeper with automatic time setting and time setting method for same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01401093A EP1253488B1 (fr) | 2001-04-27 | 2001-04-27 | Garde-temps avec mise à l'heure automatique et procédé de mise à l'heure d'un tel garde-temps |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1253488A1 true EP1253488A1 (fr) | 2002-10-30 |
EP1253488B1 EP1253488B1 (fr) | 2007-04-11 |
Family
ID=8182705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01401093A Expired - Lifetime EP1253488B1 (fr) | 2001-04-27 | 2001-04-27 | Garde-temps avec mise à l'heure automatique et procédé de mise à l'heure d'un tel garde-temps |
Country Status (5)
Country | Link |
---|---|
US (1) | US7031696B2 (fr) |
EP (1) | EP1253488B1 (fr) |
JP (1) | JP2004530132A (fr) |
DE (1) | DE60127810T2 (fr) |
WO (1) | WO2002088849A1 (fr) |
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US7599689B2 (en) * | 2002-04-22 | 2009-10-06 | Nokia Corporation | System and method for bookmarking radio stations and associated internet addresses |
BR0309409A (pt) * | 2002-04-22 | 2005-02-01 | Nokia Corp | Método e sistema para prover um serviço para o equipamento do usuário de um sistema de telecomunicação celular |
DE60217660T2 (de) * | 2002-07-02 | 2007-11-22 | CSEM Centre Suisse d`Electronique et de Microtechnique S.A. - Recherche et Développement | Uhrwerk mit Antenne |
WO2004036742A1 (fr) * | 2002-10-16 | 2004-04-29 | Casio Computer Co., Ltd | Dispositif de reception d'ondes radioelectriques, horloge d'ondes radioelectriques et repeteur |
CN1711746A (zh) * | 2002-11-07 | 2005-12-21 | 皇家飞利浦电子股份有限公司 | 具有改进的实时精度的移动无线电接收机 |
JP2006038833A (ja) * | 2004-06-25 | 2006-02-09 | Ricoh Co Ltd | 時刻補正装置及び時刻補正装置を備える画像形成装置 |
WO2008060284A1 (fr) * | 2006-11-16 | 2008-05-22 | Tte Technology, Inc. | Système et procédé pour satisfaire des soumissions d'informations d'horaires de système non valides |
FR2931147B1 (fr) * | 2008-05-19 | 2010-11-19 | Saint Gobain | Vitrage muni d'un empilement de couches minces |
US20100165795A1 (en) * | 2008-12-30 | 2010-07-01 | Lifescan Scotland Ltd. | Medical device with automatic time and date correction |
JP6387860B2 (ja) * | 2015-03-04 | 2018-09-12 | セイコーエプソン株式会社 | 電波時計および電波時計の制御方法 |
CN114980322A (zh) | 2021-02-26 | 2022-08-30 | 恩智浦有限公司 | 改进的窗口加宽 |
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WO1990014721A1 (fr) * | 1989-05-15 | 1990-11-29 | Telesia S.P.A. | Dispositif portatif personnel pour la reception et la visualisation d'informations transmises par radio en combinaison avec une montre |
GB2238438A (en) * | 1989-11-20 | 1991-05-29 | Pioneer Electronic Corp | Radio data system receiver with clock time function |
EP0682302A2 (fr) * | 1994-05-13 | 1995-11-15 | Adam Opel Ag | Dispositif de commande pour une montre synchronisée par radio |
WO1996036301A1 (fr) * | 1994-03-02 | 1996-11-21 | Ab Transistor | Systeme d'alarme modulaire et portatif |
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NL184594C (nl) | 1979-09-04 | 1989-09-01 | Philips Nv | Radio-ontvanger voorzien van een frequentie gesleutelde lus met audiofrequente terugkoppeling, en een stomschakeling. |
US4582434A (en) * | 1984-04-23 | 1986-04-15 | Heath Company | Time corrected, continuously updated clock |
JPH02309929A (ja) | 1989-05-24 | 1990-12-25 | Sumitomo Electric Ind Ltd | 肝機能検査装置 |
US5003621A (en) * | 1989-11-02 | 1991-03-26 | Motorola, Inc. | Direct conversion FM receiver |
FR2705176B1 (fr) | 1993-05-12 | 1995-07-21 | Suisse Electronique Microtech | Recepteur radio fm comprenant un circuit de surechantillonnage. |
US5507024A (en) * | 1994-05-16 | 1996-04-09 | Allegro Microsystems, Inc. | FM data-system radio receiver |
US5745503A (en) * | 1995-04-11 | 1998-04-28 | Nokia Mobile Phones Ltd. | Error correction decoder that operates in either ARDS system or a RBDS system |
JP2000019274A (ja) * | 1998-06-30 | 2000-01-21 | Aiwa Co Ltd | 時計調整方法およびそれを用いた電子機器 |
-
2001
- 2001-04-27 EP EP01401093A patent/EP1253488B1/fr not_active Expired - Lifetime
- 2001-04-27 DE DE60127810T patent/DE60127810T2/de not_active Expired - Fee Related
-
2002
- 2002-04-24 JP JP2002586084A patent/JP2004530132A/ja active Pending
- 2002-04-24 WO PCT/EP2002/004537 patent/WO2002088849A1/fr active Application Filing
- 2002-04-24 US US10/475,081 patent/US7031696B2/en not_active Expired - Fee Related
Patent Citations (4)
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WO1990014721A1 (fr) * | 1989-05-15 | 1990-11-29 | Telesia S.P.A. | Dispositif portatif personnel pour la reception et la visualisation d'informations transmises par radio en combinaison avec une montre |
GB2238438A (en) * | 1989-11-20 | 1991-05-29 | Pioneer Electronic Corp | Radio data system receiver with clock time function |
WO1996036301A1 (fr) * | 1994-03-02 | 1996-11-21 | Ab Transistor | Systeme d'alarme modulaire et portatif |
EP0682302A2 (fr) * | 1994-05-13 | 1995-11-15 | Adam Opel Ag | Dispositif de commande pour une montre synchronisée par radio |
Also Published As
Publication number | Publication date |
---|---|
US7031696B2 (en) | 2006-04-18 |
JP2004530132A (ja) | 2004-09-30 |
DE60127810T2 (de) | 2007-12-27 |
DE60127810D1 (de) | 2007-05-24 |
EP1253488B1 (fr) | 2007-04-11 |
US20040127234A1 (en) | 2004-07-01 |
WO2002088849A1 (fr) | 2002-11-07 |
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