EP0029050B1 - Horloge a affichage numerique - Google Patents

Horloge a affichage numerique Download PDF

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Publication number
EP0029050B1
EP0029050B1 EP80901005A EP80901005A EP0029050B1 EP 0029050 B1 EP0029050 B1 EP 0029050B1 EP 80901005 A EP80901005 A EP 80901005A EP 80901005 A EP80901005 A EP 80901005A EP 0029050 B1 EP0029050 B1 EP 0029050B1
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EP
European Patent Office
Prior art keywords
alarm
time
display
voltage
transistor
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
EP80901005A
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German (de)
English (en)
Other versions
EP0029050A1 (fr
Inventor
Harald Hoffmann
Lothar PÄCHER
Peter Busch
Dan Corneliu Raducanu
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Braun GmbH
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Braun GmbH
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Filing date
Publication date
Application filed by Braun GmbH filed Critical Braun GmbH
Publication of EP0029050A1 publication Critical patent/EP0029050A1/fr
Application granted granted Critical
Publication of EP0029050B1 publication Critical patent/EP0029050B1/fr
Expired legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G99/00—Subject matter not provided for in other groups of this subclass
    • G04G99/006—Electronic time-pieces using a microcomputer, e.g. for multi-function clocks
    • 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
    • G04G13/025—Producing acoustic time signals at preselected times, e.g. alarm clocks acting only at one preselected time
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/08—Housings
    • G04G17/086—Desktop clocks

Definitions

  • the invention relates to an electronic watch with alarm device according to the preamble of patent claim 1.
  • Clocks with a wake-up device are already known, which display both the actual time and the set wake-up time simultaneously in digital form on two separate display units and in which the actual time and the wake-up time can be corrected or set by means of a rotatable actuating means (Goldschmiede newspaper 1974, number 5, page 88).
  • These known watches have mechanical displays, such as those e.g. in «G. Glaser, Quarzuhrentechnik, 1st edition 1979, Kempter Verlag Ulm » on pages 172 and 173.
  • the actual time and the wake-up time can be set to the minute both in the forward and in the reverse direction and the wake-up device can also be triggered exactly, but this requires a relatively high outlay on mechanical devices.
  • Another disadvantage of such clocks with a wake-up device is that the adjustment of the actual time and wake-up time is proportional to the rotation carried out by the user on the actuating means. Given the corresponding extent of the time adjustment to be carried out with a given transmission ratio between the angle of rotation and the displayed time, this can require quite large angles of rotation and is therefore correspondingly tedious.
  • the watch known from FR-A-2 388 331 in which no time setting separated by hours and minutes can be carried out, is a switch which is intended to prevent a particularly unpleasant inadvertent time adjustment in this case.
  • the watch known from DE-A-2 628 141 is a switching device for selecting the hour or minute display.
  • a clock 1 is shown in perspective, which has on its front 2 a digital display 3 for the actual time and a digital display 4 for the wake-up time.
  • Operating devices are provided on the top 5 of this clock 1, with which various functions can be set or called up.
  • a rotary knob 6 is provided for setting the actual time, which has several rotary positions. In one of these rotary positions, for example, the actual time is adjusted at a first speed, while the actual time is set at a different speed at a second speed he follows.
  • a second rotary knob 7 is provided for setting the wake-up time, with which two different setting speeds can also be set in motion.
  • the setting itself takes place in a known manner in that a clock generator or the like advances the digits of the displays 3, 4 consisting of segments.
  • the various times can be switched on not only by running forwards, but also by running backwards.
  • the next full minute is set and the rotary knob 6 is set to «Stop».
  • the rotary switch is set to operation.
  • a sensor button 8 is provided on the top 5 of the clock 1, with which a wake-up process can be initiated.
  • the wake-up interval can be ten minutes, while the number of repetitions can be five.
  • an acoustic signal sounds which is interrupted by touching the sensor button 8.
  • the buzzer sounds After ten minutes, the buzzer sounds again, which in turn can be interrupted by touching sensor button 8. Then there is a pause of ten minutes, etc. The entire process can be repeated a total of five times or as often as required.
  • the display 4 remains lit.
  • a further mechanical key 10 is arranged below the rotary knobs 6, 7, and when pressed, the wake-up time is switched off completely. In this case, display 4 no longer lights up. To switch on the button 10 must be pressed again.
  • the displays 3, 4 of the clock 1 each contain four seven-segment digits designed as active emitters, which are supplied with electrical energy via a mains cable 11.
  • the clock 1 shown in FIG. 1 is designed as a mains clock, it can in principle also be designed as a battery clock.
  • the electrical and electronic components required for the operation of the clock 1 are essentially in a bulge 12 arranged below the top 5.
  • the clock 1 shown in FIG. 1 is shown again from the side, the clock 1 being broken open at two points.
  • the front side 2 with the displays 3, 4 and the upper side 5 with the keys 9, 10 and the rotary knob 7 can be seen in this representation.
  • a snap connection 13 and on the other hand a screw connection 14 between the bulge 12 and the upper part 5 of the watch 1.
  • Below the snap connection 13 there is a foot 15 for putting on the watch.
  • the sensor key 8 has two electrical contact tracks 16, 17, which can be bridged by touching the fingers and thereby stop the wake-up signal.
  • Keys 9 and 10 are elongated and rounded at the corners.
  • the rotary switches 6, 7 are circular with respect to their base areas 18, 19 and have y-shaped elevations 20, 21 on these base areas.
  • the arrow symbols 22, 23 denote the positions of the rotary switches 6, 7 with which the actual or wake-up times are slowly adjusted in a first direction.
  • the arrow symbols 22 ', 23' indicate a slow adjustment in a second direction.
  • the arrow symbols 24, 25, 24 ', 25' indicate a quick adjustment in a first or second direction.
  • FIG. 4 The underside of FIG. 1 can be seen in FIG. 4. It can be seen from this illustration that the top or front side 2, 5 of the clock 1 is considerably wider than the central part of the bulge 12. Two screws 29, 30 are used to serve the lower area of the clock 1 to connect the top.
  • Fig. 5 shows the clock 1, similar to Fig. 2, from the side, but in a sectional view.
  • a front window 31 can be seen, which is arranged in front of the display 3 for the time and the display 4 for the wake-up time.
  • These displays are arranged on a support plate 32, which in turn is attached to the watch case.
  • a further plate 33 is provided perpendicular to the support plate 32, on which the counter forces for the keys 9, 10 and the rotary knobs 6, 7 are supported. It can be seen here that not only the keys 9, 10 but also the knobs 6, 7 are supported by springs 34, 35. 36, 37, 38 designate electrical and electronic components which serve to obtain time signals from the mains frequency and to control the displays 3, 4.
  • These displays 3, 4 can be, for example, Futaba fluorescent displays of the type 4-BT-07 for the wake-up time and of the type 4-LT-11 for the time of the Futaba Corporation, Daido Keori Bldg., 3F, 3- 1-16, Satokanda, Chiyodaku, Tokyo 101, Japan.
  • FIG. 6 shows a circuit arrangement which is used to operate the clock.
  • 40 is a network transformer, the primary winding 41 of which is, for example, at 220 V and 50 Hz.
  • This network transformer has a secondary winding 42 and a tertiary winding 43, the output of the secondary winding 42 being connected to a Graetz rectifier bridge circuit 44 with the four diodes 45, 46, 47, 48.
  • a storage capacitor 49 which is designed as an electrolytic capacitor and thus also has a certain inductance, is connected to the direct voltage supplied by this bridge circuit. In order to ensure reliable interference suppression, a further capacitor 50 is therefore provided see that is connected in parallel to the capacitor 49.
  • the series circuit comprising a resistor 51, a first Zener diode 52 and a second Zener diode 53 is also connected in parallel with this capacitor 49, a capacitor 54 being provided in parallel with the second Zener diode 53 and used for interference suppression.
  • a resistor 55 is connected to the anode of the Zener diode 53 and has its other terminal connected to the emitter of a transistor 56.
  • the base of this transistor 56 is connected to the connecting line between the anode of the Zener diode 52 and the one connection of the resistor 51, while the collector of this transistor 56 is connected to the other connection of the resistor 51 and thus to the Graetz bridge 44.
  • the supply U v is connected via a diode 57 to a connection 58 of a microcomputer 59, which can be, for example, the microcomputer or microprocessor TMS 1070.
  • a microcomputer 59 which can be, for example, the microcomputer or microprocessor TMS 1070.
  • the supply voltage U v is connected to an input V DD of the microcomputer 59 via the diode 57 and a capacitor 60.
  • tuning devices for an oscillator, the active elements of which are provided in the microprocessor 59.
  • These tuning devices essentially consist of an RC element, which in the specific example has the capacitor 61 and two resistors 62, 63, of which the resistor 63 is adjustable and is connected to a voltage V DD .
  • the capacitor 61 is connected to the input V ss and the first connection of a resistor 64, the second connection of which is connected to a further resistor 65, the two resistors 64, 65 forming a voltage divider, on the center tap of which there is a light-sensitive resistor 66.
  • This photosensitive resistor is connected on the one hand to the base of a transistor 67 and on the other hand to a resistor 68 which is also connected to the emitter of transistor 56.
  • the emitter of transistor 67 is connected to a center tap 69 of the tertiary winding 43, while its collector is connected to the capacitor 49 or the collector of transistor 56, both of which are connected to a DC voltage connection of the Graetz bridge 44.
  • a connection leads to a first sensor contact 71 via a resistor 70.
  • This first sensor contact 71 is opposite a second sensor contact 72, which in turn has a resistor 73 with the base of a transistor 74 is connected.
  • a diode 75 and a resistor 76 are connected in parallel with the base-emitter path of this transistor 74, while the collector of the transistor 74 is connected to a connection 77 of the microcomputer 59.
  • the 24-hour alarm button 9 the weekend alarm button 10 and the rotary switches 6, 7; the latter, however, only in switch positions symbolized by switches 78, 79 and 80, 81, 82.
  • the rotary switches are connected to a connection 88.
  • the keys 9, 10 can be connected via the diodes 89, 90 to the outputs 91 and 92 of the microcomputer 59, while the switches 78, 83 can be connected to the output 94 via a diode 93, and the switches 84, 79 can be connected to a diode 95 an output 96, the switches 80, 85 via a diode 97 and an output 98, the switches 81, 86 via a diode 99 with an output 100 and the switches 82, 87 via a diode 101 with an output 102 of the microcomputer.
  • the diodes 89, 90, 93, 95, 97, 99, 101 are each poled so that their anodes are connected to the outputs 91, 92, 94, 96, 98, 100, 102.
  • the diode 75 serves to limit the voltage at high electrostatic voltages.
  • a piezo buzzer 104 is connected to a further output 103 of the microcomputer 59 via a resistor 105.
  • Parallel to the series circuit comprising resistor 105 and buzzer 104 is a discharge resistor 106, which is connected on the one hand to output 103 and on the other hand to a line 107 to which a plurality of “pull down” or bleeder resistors 108 to 117 are connected.
  • the respective other connections of these resistors 108 to 117 are connected to the outputs 118, 119, 120, 91, 92, 94, 96, 98, 100, 102 of the microcomputer 59.
  • At the output 120 there is also a diode 121 with its anode, its cathode being connected to the emitter of the transistor 74.
  • the microcomputer 59 has further outputs 122 to 129, each of which is connected to the line 107 via a resistor 131 to 138.
  • an output 130 is provided, to which a capacitor 139 and a diode 140 are connected with their cathode, the capacitor 139 being connected to the potential V ss with its second connection, while the diode with its anode is connected to the potential V DD .
  • the digits of the digit display 3 for the time are connected to the outputs 122 to 128 of the microcomputer 29.
  • the corresponding connections of the display 3 are designated a-g.
  • the number display 4 is connected to the outputs 122 to 128 for displaying the wake-up time.
  • the lines given to the connections of the displays 3, 4 labeled ag are assigned to the anodes of luminescent tubes, not shown, while the connections 141, 142, 144 to the filament cathodes and Outputs 94, 96, 98, 100, 102 and 118, 119, 120, 91, 92 are assigned to the grids of the tubes.
  • the arrangement downstream of the mains transformer 40 essentially has the task of supplying the microcomputer 59 with the correct and possibly stabilized voltage.
  • the voltage V SS ⁇ V DD must always be kept constant due to the nature of the microcomputer 59.
  • the current that normally flows in the direction of V SS is much smaller than the current that flows over V EE , for example 10 mA instead of 30 mA.
  • the voltages mentioned are regulated by the Zener diodes 52, 53, the resistor 51 acting as a current limiter.
  • the transistor 56 is connected as an emitter follower.
  • the input voltage across capacitor 49 drops noticeably, e.g. B. from 39 V to 35V, the Zener diode 52 no longer conducts due to its characteristic. Since transistor 56 continues to operate as an emitter follower, the current no longer flows through diodes 53, 52 and resistor 51, but rather via diode 53, resistor 55 and transistor 56 receive the necessary voltage V SS ⁇ V DD . Good voltage regulation can thus be achieved in a simple manner and using a simple and inexpensive transistor 56.
  • the sensor button 8 which has the two sensor contacts 71, 72
  • care is taken to ensure that components are not destroyed, for example if the operator touches only one of the sensor contacts 71, 72 with an electrostatically charged finger.
  • the wake-up process is generally only interrupted when both sensor contacts 71, 72 are electrically connected to one another, it can also happen that the wake-up process is interrupted when only one sensor contact is touched.
  • Fig. 7a the scan cycle of the display is shown once again in pulse form.
  • Various pulses I-X plotted on the time axis can be seen, in which the reference numbers of the respectively assigned outputs of the microprocessor 59 are written.
  • These outputs 102, 100, 98, 96, 94 and 92, 91, 120, 119, 118 sequentially control the grids of the luminescent tubes of displays 3 and 4, respectively.
  • the pulse widths of the pulses 1-V are about three times larger than the pulse widths of the pulses VI-X, which results in a good duty factor.
  • this advantageous duty factor is achieved in that the smaller display digits of the wake-up time display shine three times brighter than the large display digits with the same pulse width. With the same brightness, the pulses for the small digits can therefore be selected three times smaller than the pulses for the large digits.
  • the large digits of the actual display 3 are therefore controlled longer than the small digits of the wake-up time display 4.
  • impulse I applies to the minute of the actual time display 3, while impulse II controls the tens of these minutes.
  • the wake-up time display 4 is activated analogously, where the pulses VI and VII control the ones or tens of minutes and the pulses VIII and IX the ones and tens of hours.
  • the pulses V and X control the points between the minute and hour digits.
  • FIG. 7b shows on the time axis how the pulses for the alarm tone run with respect to the scanning pulses according to FIG. 7a. It can be seen that the wake-up clock is linked to the sampling cycle.
  • DIG 1-DIG 10 are provided above the pulses I-X in FIG. 7a. These names designate program parts that run during the scanning cycle. Below the pulses I-X, further program parts DIG 11-DIG 20 are designated, which indicates that different program parts are called up in two sampling cycles. A gap occurs at the end of the last scanning pulse X, whereupon the scanning pulse I reappears. It is obvious to use the mentioned gap for the execution of all further program steps after scanning all the digits of a display 3, 4. However, this would result in a deterioration in the duty factor. Therefore, the program parts are not only called up in the gap, but also in the impulses I-X.
  • FIG. 8 shows the program sequence in more detail using a flow chart. It can be seen from this that after start-up, which is represented by start block 200, the data memory of microprocessor 59 is deleted. This is done so that any stored data that could cause the wrong time or alarm time to be displayed is deleted. This deletion process is represented by box 201.
  • the diodes 147, 148 for the program option are then queried at 202. If the diode 148 is inserted, the mains frequency is 60 Hz. If the diode 147 has been inserted, this means that no alarm tone should sound after a mains voltage failure.
  • the initial conditions are set at 203, i.e. the start bit, the diode bits, the alarm tone, etc.
  • the program starts with the multiplex routine for displays 3, 4.
  • an inquiry is made at 205 as to whether the 50 Hz bit is set. If this was not the case, a delay subroutine 206 is switched on, which then runs a 50 Hz input subroutine 207. Then it goes back to the multiplex routine 208.
  • the 50 Hz switch bits are set at 209 and the pre-counter VZ 1 of the ones is then incremented at 210. Now it is queried at 211 whether the precount of tens is «five». If this is the case, the subroutine for the 2 Hz switch bits runs at 212. The multiplex routine is then run at 213. If the count in front of the tens was not at "five", a query is made at 214 whether the count in for the tens is at "ten”. If this is the case, the subroutine for the 2 Hz switch bits runs at 215. Otherwise, the pre-counter is cleared at 216 and the seconds counter is incremented at 217.
  • FIG. 9 shows a flowchart that follows the flowchart of FIG. 8. It is incremented by one second at 218 and then queried at 219 whether the seconds are "sixty". If this is not the case, the system switches to multiplexing. However, if the seconds are "sixty", the second counter is cleared at 220 and the minute bit is set at 221. The time display is now prepared at 222 and a query is made at 223 as to whether the multiplex bit is set. If this is not the case, then digits 1 ... 10 to 224, 225, 226 (see also top row in FIG. 7a) are run while, if this is the case, digits 11 ... 20 (see bottom row of FIG. 7a) at 227, 228, 229. The multiplex bit is set at the end of the digit 10, while the multiplex bit is deleted at the end of the digit 20. This is followed by routine 204, which relates to the start of the multiplex display.
  • RAM data memory
  • blocks 202, 203 of FIG. 8 are implemented by a plurality of individual processes 242-247.
  • FIGS. 8 and 9 The main program of FIGS. 8 and 9 has numerous subroutines or subroutines which are not shown and explained in detail. In part, these subroutines are only dependent on the TMS 1070 microprocessor from Texas Instruments used and would be omitted or would have a different shape if a different microprocessor were used.
  • a subroutine “DIGIT 1” is shown in more detail in FIG. 12 merely as an example. As already explained above, this is a part of the program that essentially runs when the first digit of the actual time display is in operation (see Fig. 7a, upper half), i.e. when the control pulse 1 is present.
  • the voltage-limiting diode 75 it is also possible to arrange the voltage-limiting diode 75 differently, namely in such a way that a resistor 76 is connected in parallel with the base-emitter path of the transistor 74 and the diode 75 is connected to V SS from the base of the transistor 74.
  • Other variations such as the redesign of the Y-shaped rotary switches into rotary switches in the manner of a conventional alarm clock adjuster, are also obvious.

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

Abstract

L'horloge electronique presente un affichage numerique de l'heure (3) et un affichage numerique separe de l'heure de reveil (4). Les deux affichages (3, 4) peuvent etre regles a l'aide de deux boutons rotatifs separes (6, 7) ou a l'aide d'un bouton rotatif commun. Pour le reglage de l'heure et de l'heure de reveil sont prevues des cadences differentes permettant d'avancer ou de reculer les heures. L'invention est applicable avantageusement a des reveils electroniques a affichage numerique.

Claims (9)

1. Horloge électronique munie d'un dispositif de réveil, comportant deux unités d'affichage électro- optiques numériques séparées (3, 4) pour l'affichage simultané de l'heure réelle et de l'heure de réveil, et munie de dispositifs pour le réglage de l'heure réelle et de l'heure de réveil sur une valeur désirée, caractérisée en ce que les dispositifs pour le réglage de l'heure réelle et de l'heure de réveil présentent des moyens (59) pour l'exécution du réglage possédant des vitesses de rythme respectives différentes, aussi bien en marche avant qu'en marche arrière, ainsi qu'un organe de réglage tournant (6, 7) servant à sélectionner le sens du réglage et la vitesse du réglage de l'heure réelle et de l'heure de réveil respectivement.
2. Horloge selon la revendication 1, caractérisée en ce que les fonctions de commande de l'horloge (1) sont exécutées en utilisant un microprocesseur (59) et en ce que, pour l'alimentation du microprocesseur (59) en tension continue à partir d'une source de tension alternative du réseau (U), il est prévu un redresseur (44) muni d'un circuit de réglage (49-56) placé en aval, le circuit de réglage produisant une première tension (Vss-Voo) qui est toujours maintenue constante, ainsi qu'une deuxième tension (VSS-VEE) qui n'est maintenue constante que pendant un intervalle déterminé et qui n'est plus que limitée en cas de franchissement d'une valeur seuil.
3. Horloge selon la revendication 2, caractérisée en ce que la première tension (Vss-Voo) est prise sur une diode de Zener (53) qui est connectée à la première connexion de sortie du redresseur (44) par sa cathode et à la deuxième connexion de sortie du redresseur (44) par son anode, à travers une autre diode de Zener (52) et une résistance (51).
4. Horloge selon la revendication 2, caractérisée en ce que la deuxième tension (VSS-VEE) est prise entre la cathode de la première diode de Zener (53) et l'émetteur d'un transistor (56), cependant qu'entre l'émetteur du transistor (56) et la cathode de la première diode de Zener (53), est intercalé un circuit série composé d'une résistance (55) et d'un condensateur (54) et que la base du transistor (56) est connectée à l'anode de la deuxième diode de Zener (52) tandis que le collecteur du transistor (56) est connecté à la deuxième connexion de sortie du redresseur.
5. Horloge selon la revendication 1, caractérisée en ce que l'unité d'affichage (3) affectée à l'heure réelle et l'unité d'affichage (4) affectée à l'heure de réveil sont composées d'éléments émetteurs de lumière et en ce que, pour la commande de la luminosité des unités d'affichage (3, 4), il est prévu un circuit de régulation de la tension d'alimentation qui comprend un transistor (67), une photo-résistance (66) ainsi que d'autres résistances (64, 65, 68), la photo-résistance (66) étant de faible valeur ohmique en présence d'une grande luminosité ambiante, et la luminosité des unités d'affichage (3, 4) étant alors essentiellement déterminée par une première (64) et une deuxième (68) résistances des autres résistances tandis que, en présence d'une faible luminosité ambiante, la photo-résistance (66) est de grande valeur ohmique, la luminosité des unités d'affichage (3, 4) étant alors essentiellement déterminée par la première (64) et une troisième (65) résistances des autres résistances.
6. Horloge selon la revendication 1, caractérisée en ce qu'il est prévu une touche (9) après l'enfoncement de laquelle un signal d'alarme émis par un dispositif d'alarme (104) contenu dans le dispositif de réveil s'interrompt, le dispositif d'alarme émettant à nouveau un signal d'alarme au moment de la coïncidence suivante entre l'heure réelle et l'heure de réveil, par exemple après écoulement de 24 heures.
7. Horloge selon la revendication 1, caractérisée en ce qu'il est prévu une touche (10) après enfoncement de laquelle un signal d'alarme émis par un dispositif d'alarme (104) contenu dans le dispositif de réveil et l'affichage de l'heure de réveil s'interrompent et en ce que le dispositif d'alarme n'émet à nouveau un signal d'alarme au moment de la coïncidence suivante entre l'heure réelle et l'heure de réveil que si l'affichage de l'heure de réveil a été rendu visible par un nouvel enfoncement de la touche (10).
8. Horloge selon la revendication 1, caractérisée en ce qu'il est prévu un dispositif de contact (8) dont l'actionnement interrompt un signal d'alarme déclenché pour un temps déterminé, par exemple dix minutes, et en ce que le dispositif de contact (8) est composé de deux pistes de contact (16, 17) conductrices de l'électricité, séparées l'une de l'autre et qui peuvent être pontées à l'aide d'un doigt ou équivalent.
9. Horloge selon la revendication 2, caractérisée en ce que des options de programmes sont activées par l'insertion de diodes (147, 148) dans le circuit associé au microprocesseur (59).
EP80901005A 1979-06-02 1980-12-15 Horloge a affichage numerique Expired EP0029050B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2922621 1979-06-02
DE2922621A DE2922621C2 (de) 1979-06-02 1979-06-02 Elektronische Uhr mit Weckeinrichtung

Publications (2)

Publication Number Publication Date
EP0029050A1 EP0029050A1 (fr) 1981-05-27
EP0029050B1 true EP0029050B1 (fr) 1984-08-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP80901005A Expired EP0029050B1 (fr) 1979-06-02 1980-12-15 Horloge a affichage numerique

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Country Link
US (1) US4415273A (fr)
EP (1) EP0029050B1 (fr)
JP (1) JPS56500623A (fr)
DE (1) DE2922621C2 (fr)
HK (1) HK686A (fr)
WO (1) WO1980002753A1 (fr)

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EP2120113B1 (fr) 2008-05-11 2012-02-15 Research In Motion Limited Dispositif électronique et procédé pour l'activation d'un mode de fonctionnement de sommeil amélioré
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ES2387527T3 (es) * 2008-05-11 2012-09-25 Research In Motion Limited Dìspositivo electrónico y método que proporcionan una indicación mejorada de que un reloj de alarma está en un estado activado
CA2665842C (fr) 2008-05-11 2014-12-16 Research In Motion Limited Dispositif electronique et methode fournissant une caracteristique de reveille-matin amelioree et un mode d'edition de la sonnerie facilite
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Also Published As

Publication number Publication date
JPS56500623A (fr) 1981-05-07
EP0029050A1 (fr) 1981-05-27
WO1980002753A1 (fr) 1980-12-11
US4415273A (en) 1983-11-15
DE2922621C2 (de) 1985-10-31
DE2922621A1 (de) 1980-12-11
HK686A (en) 1986-01-10

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