EP1014402B1 - Illumination system for keys and its application in portable telephones - Google Patents

Illumination system for keys and its application in portable telephones Download PDF

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Publication number
EP1014402B1
EP1014402B1 EP99402947A EP99402947A EP1014402B1 EP 1014402 B1 EP1014402 B1 EP 1014402B1 EP 99402947 A EP99402947 A EP 99402947A EP 99402947 A EP99402947 A EP 99402947A EP 1014402 B1 EP1014402 B1 EP 1014402B1
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EP
European Patent Office
Prior art keywords
key
source
lighting system
telephone
ultraviolet radiation
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
EP99402947A
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German (de)
French (fr)
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EP1014402A1 (en
Inventor
Eric Auvray
Alain Guirauton
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.)
TCT Mobile Ltd
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TCT Mobile Ltd
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Filing date
Publication date
Application filed by TCT Mobile Ltd filed Critical TCT Mobile Ltd
Publication of EP1014402A1 publication Critical patent/EP1014402A1/en
Application granted granted Critical
Publication of EP1014402B1 publication Critical patent/EP1014402B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/18—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
    • H01H9/182—Illumination of the symbols or distinguishing marks

Definitions

  • the present invention relates to a lighting system of at least one key on a device, and in particular on a mobile radio telephone of the mobile or wireless type.
  • US 4,551,598 shows a device according to the preamble of claim 1.
  • the present invention aims to overcome the aforementioned drawbacks by providing a lighting system with optimized space at the device, and which requires no energy input to the device.
  • a lighting system of at least one key on a device characterized in that it comprises, at the level of said key, a zone made of ultraviolet radiation reactive material, and a source of ultraviolet radiation for radiating on said area, said source being positioned at a location separate from said apparatus.
  • the source is advantageously placed on an accessory of the mobile phone, for example on the car charger or car-kit, or on the desktop charger.
  • This type of accessory is connected to a source of energy independent of the mobile phone's own battery, namely to the battery of the car in the case of a car-kit, or to a conventional power outlet in the case a desktop charger.
  • the source is advantageously placed on the base of the wireless telephone, itself connected on the one hand to a wired telephone network (PSTN), and on the other hand, to the conventional power supply network.
  • PSTN wired telephone network
  • the source can be advantageously placed in the center of the interior flag of the cabin of the car, and thus serve to illuminate a plurality of devices, including the mobile phone, without the need to add a source on the accessory, typically the car-kit, receiving the mobile phone.
  • the energy consumption due to the operation of the lighting system according to the invention takes place not at the level of the apparatus, but of the accessory.
  • FIGS. 1 and 2 schematically show an apparatus 1, for example a wireless or mobile type radio telephone, comprising a keypad 2.
  • a keypad 2 for example a wireless or mobile type radio telephone, comprising a keypad 2.
  • these are made of a specific material, or covered with a layer of a specific material, the specificity of this material being that it reacts to ultraviolet radiation.
  • the keys of the keyboard are subjected to ultraviolet radiation from a radiation source disposed at any location with direct radiation on the keys, the latter become visible to the user, even in case of weak ambient brightness.
  • the source of ultraviolet radiation is placed at a location separate from the apparatus 1, so as not to burden the energy consumption at the level of the apparatus 1. This is particularly important when the device is a portable device with limited autonomy, for example a mobile phone or wireless.
  • the radiation source consists of a plurality of luminous entities 3 of the LED type arranged on a separate element 4 of the apparatus 1, and has its own power supply (not shown ).
  • this element 4 is a support intended to receive the apparatus 1 (for example a vehicle support called “car-kit” or a desktop charger in the case where the apparatus 1 is a mobile telephone, or a base in the case where the device 1 is a cordless phone).
  • the position of the luminous entities 3 on the element 4 is chosen so as to obtain a direct radiation of these entities on the keys 2 when the apparatus 1 is in place on the element, as shown in FIG. 2.
  • the position may be that shown in Figures 1 and 2, or any other position to obtain the same result (radiation on the side, or from above the device ).
  • the light source will be composed of a plurality of light entities, as shown in Figure 1. This provides the most homogeneous radiation possible.
  • the lighting system described has the advantage of providing non-aggressive illumination of the buttons on the device. This is particularly important in an environment such as a car driving at night, in which any too violent lighting is to be avoided.
  • the invention can be applied to any type of device comprising a control key or navigation or dialing that must be visible to the user.
  • the invention is also applicable to car radios having an extractable bar when the user is not in his car.
  • the radiation source is then advantageously positioned on the support of the radio for receiving the bar. More generally, the radiation source may be positioned anywhere as shown in FIG. 3, for example in the passenger compartment of a car, without it being necessary to incorporate it into a dedicated accessory. of the device whose key or keys are to be made visible.

Landscapes

  • Telephone Set Structure (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Push-Button Switches (AREA)
  • Telephone Function (AREA)

Abstract

The button push lighting system has the buttons (2) mounted on a surface of a mobile phone (1). The buttons are activated by an ultra-violet radiation source (3) radiating onto the buttons and positioned in a separate section (4) of the mobile phone.

Description

La présente invention a pour objet un système d'éclairage d'au moins une touche sur un appareil, et notamment sur un téléphone de radiocommunications portatif du type mobile ou sans-fil.The present invention relates to a lighting system of at least one key on a device, and in particular on a mobile radio telephone of the mobile or wireless type.

Le document US 4 551 598 montre un dispositif selon le préambule de la revendication 1.US 4,551,598 shows a device according to the preamble of claim 1.

Dans le domaine des appareils portatifs comportant un davier de touches ou bien des touches de commandes du fonctionnement de l'appareil, il est important que l'utilisateur puisse voir les touches à n'importe quel moment et quelles que soient les conditions d'utilisation.In the field of portable devices with key or control buttons for the operation of the device, it is important that the user can see the keys at any time and regardless of the conditions of use .

Pour ce type d'appareils, des solutions ont déjà été proposées de manière à permettre la visibilité des touches dans une luminosité ambiante faible. Ces solutions consistent à incorporer dans l'appareil une source de lumière qui permet d'éclairer les touches par l'arrière, soit directement, soit indirectement par l'intermédiaire d'un guide de lumière. Or, ces solutions comportent deux inconvénients majeurs :

  • d'une part, la source lumière et le guide de lumière présentent un volume non négligeable dont il faut tenir compte dans la conception de l'appareil, ce qui ne permet pas de réduire de façon optimale la taille de l'appareil;
  • d'autre part, les appareils portatifs fonctionnent grâce à une batterie d'alimentation en énergie dont la durée de fonctionnement est liée à la technologie de la batterie et à la consommation des différents éléments de l'appareil. L'utilisation d'une source lumineuse au niveau de l'appareil vient donc augmenter la consommation d'énergie, au détriment de l'autonomie de l'appareil.
For this type of devices, solutions have already been proposed so as to allow the visibility of the keys in a low ambient light. These solutions include incorporating into the apparatus a light source that allows to illuminate the keys from behind, either directly or indirectly through a light guide. However, these solutions have two major drawbacks:
  • on the one hand, the light source and the light guide have a significant volume that must be taken into account in the design of the device, which does not reduce optimally the size of the device;
  • on the other hand, the portable devices operate thanks to a battery of power supply whose duration of operation is related to the technology of the battery and the consumption of the various elements of the apparatus. The use of a light source at the device therefore increases the power consumption, to the detriment of the autonomy of the device.

La présente invention a pour but de pallier les inconvénients précités en proposant un système d'éclairage à encombrement optimisé au niveau de l'appareil, et qui ne nécessite aucun apport d'énergie au niveau de l'appareil.The present invention aims to overcome the aforementioned drawbacks by providing a lighting system with optimized space at the device, and which requires no energy input to the device.

Ce but est atteint selon l'invention qui propose un système d'éclairage d'au moins une touche sur un appareil, caractérisé en ce qu'il comporte, au niveau de ladite touche, une zone en matériau réactif au rayonnement ultra-violet, et une source de rayonnement ultra-violet destinée à rayonner sur ladite zone, ladite source étant positionnée à un endroit distinct dudit appareil.This object is achieved according to the invention which proposes a lighting system of at least one key on a device, characterized in that it comprises, at the level of said key, a zone made of ultraviolet radiation reactive material, and a source of ultraviolet radiation for radiating on said area, said source being positioned at a location separate from said apparatus.

Lorsque l'invention est appliquée à un appareil du type téléphone mobile, la source est avantageusement placée sur un accessoire du téléphone mobile, par exemple sur le chargeur de voiture ou car-kit, ou sur le chargeur de bureau. Ce type d'accessoire est relié à une source d'énergie indépendante de la batterie propre du téléphone mobile, à savoir à la batterie de la voiture dans le cas d'un car-kit, ou à une prise de courant classique dans le cas d'un chargeur de bureau.When the invention is applied to a device of the mobile phone type, the source is advantageously placed on an accessory of the mobile phone, for example on the car charger or car-kit, or on the desktop charger. This type of accessory is connected to a source of energy independent of the mobile phone's own battery, namely to the battery of the car in the case of a car-kit, or to a conventional power outlet in the case a desktop charger.

De même, lorsque l'invention est appliquée à un appareil du type téléphone sans-fil, la source est avantageusement placée sur la base du téléphone sans-fil, elle-même reliée d'une part à un réseau téléphonique filaire (PSTN), et d'autre part, au réseau classique d'alimentation en courant.Similarly, when the invention is applied to a device of the wireless telephone type, the source is advantageously placed on the base of the wireless telephone, itself connected on the one hand to a wired telephone network (PSTN), and on the other hand, to the conventional power supply network.

De même, lorsque l'invention est appliquée non seulement à un téléphone mobile, mais aussi à d'autres dispositifs (instruments et commandes) situés dans l'habitacle d'un véhicule, la source peut être avantageusement placée au centre du pavillon intérieur de l'habitacle de la voiture, et servir ainsi à l'éclairage d'une pluralité de dispositifs, y compris le téléphone mobile, sans qu'il soit nécessaire d'ajouter une source sur l'accessoire, typiquement le car-kit, recevant le téléphone mobile.Similarly, when the invention is applied not only to a mobile phone, but also to other devices (instruments and controls) located in the passenger compartment of a vehicle, the source can be advantageously placed in the center of the interior flag of the cabin of the car, and thus serve to illuminate a plurality of devices, including the mobile phone, without the need to add a source on the accessory, typically the car-kit, receiving the mobile phone.

Ainsi, la consommation d'énergie due au fonctionnement du système d'éclairage selon l'invention s'effectue non pas au niveau de l'appareil, mais de l'accessoire.Thus, the energy consumption due to the operation of the lighting system according to the invention takes place not at the level of the apparatus, but of the accessory.

Un exemple de mise en oeuvre de la présente invention va maintenant être décrit en référence aux figures annexées, dans lesquelles :

  • la figure 1 illustre schématiquement une perspective d'un système d'éclairage pour un appareil du type téléphone de radiocommunications;
  • la figure 2 est une vue de côté de la figure 1.
  • La figure 3 est une variante de l'éclairage des touches d'un appareil dans laquelle la source de rayonnement est localisée dans un endroit quelconque, distinct dudit appareil.
An exemplary implementation of the present invention will now be described with reference to the appended figures, in which:
  • Figure 1 schematically illustrates a perspective of a lighting system for a radio telephone type apparatus;
  • Figure 2 is a side view of Figure 1.
  • Figure 3 is a variant of the illumination of the keys of an apparatus in which the radiation source is located in any place, separate from said apparatus.

Sur les figures 1 et 2, on a représenté schématiquement un appareil 1, par exemple un téléphone de radiocommunications du type mobile ou sans-fil, comprenant un clavier à touches 2. Selon l'invention, pour que les touches soient visibles en toutes circonstances, même en cas de faible luminosité ambiante, ces dernières sont réalisées en un matériau spécifique, ou alors recouvertes d'une couche d'un matériau spécifique, la spécificité de ce matériau étant qu'il réagit à un rayonnement ultra-violet.FIGS. 1 and 2 schematically show an apparatus 1, for example a wireless or mobile type radio telephone, comprising a keypad 2. According to the invention, so that the keys are visible in all circumstances , even in low ambient light, these are made of a specific material, or covered with a layer of a specific material, the specificity of this material being that it reacts to ultraviolet radiation.

Ainsi, dès lors que les touches du clavier sont soumises à un rayonnement ultra-violet provenant d'une source de rayonnement disposée à un endroit quelconque avec rayonnement direct sur les touches, ces dernières deviennent visibles à l'utilisateur, même en cas de faible luminosité ambiante.Thus, since the keys of the keyboard are subjected to ultraviolet radiation from a radiation source disposed at any location with direct radiation on the keys, the latter become visible to the user, even in case of weak ambient brightness.

Différents matériaux peuvent être utilisés dans le cadre de l'invention, à savoir :

  • des sels de Baryum ou leurs dérivés, des pigments luminophores ou des terres rares, appliqués par dépôt;
  • des polymères, et en particulier des variantes de polymères comportant du polyuréthurane, incorporés par injection dans des matériaux moulés.
Different materials can be used in the context of the invention, namely:
  • Barium salts or derivatives thereof, phosphor pigments or rare earths applied by deposit;
  • polymers, and in particular variants of polymers comprising polyurethurane, incorporated by injection into molded materials.

Selon une autre caractéristique de l'invention, la source de rayonnement ultra-violet est placée à un endroit distinct de l'appareil 1, ce afin de ne pas grever la consommation d'énergie au niveau de l'appareil 1. Ceci est particulièrement important lorsque l'appareil considéré est un appareil portatif à autonomie limitée, par exemple un téléphone mobile ou sans-fil.According to another characteristic of the invention, the source of ultraviolet radiation is placed at a location separate from the apparatus 1, so as not to burden the energy consumption at the level of the apparatus 1. This is particularly important when the device is a portable device with limited autonomy, for example a mobile phone or wireless.

Dans l'exemple représenté sur les figures 1 et 2, la source de rayonnement est constituée d'une pluralité d'entités lumineuses 3 du type LED disposés sur un élément 4 distinct de l'appareil 1, et possède sa propre alimentation (non représentée).In the example shown in FIGS. 1 and 2, the radiation source consists of a plurality of luminous entities 3 of the LED type arranged on a separate element 4 of the apparatus 1, and has its own power supply (not shown ).

De manière avantageuse, cet élément 4 est un support destiné à recevoir l'appareil 1 (par exemple un support véhicule dit "car-kit" ou un chargeur de bureau dans le cas où l'appareil 1 est un téléphone mobile, ou une base téléphonique dans le cas où l'appareil 1 est un téléphone sans-fil). La position des entités lumineuses 3 sur l'élément 4 est choisie de manière à obtenir un rayonnement direct de ces entités sur les touches 2 lorsque l'appareil 1 est en place sur l'élément, comme le montre la figure 2. A cet effet, la position peut être celle montrée sur les figures 1 et 2, ou toute autre position permettant d'obtenir le même résultat (rayonnement sur le côté, ou par le dessus de l'appareil...).Advantageously, this element 4 is a support intended to receive the apparatus 1 (for example a vehicle support called "car-kit" or a desktop charger in the case where the apparatus 1 is a mobile telephone, or a base in the case where the device 1 is a cordless phone). The position of the luminous entities 3 on the element 4 is chosen so as to obtain a direct radiation of these entities on the keys 2 when the apparatus 1 is in place on the element, as shown in FIG. 2. For this purpose , the position may be that shown in Figures 1 and 2, or any other position to obtain the same result (radiation on the side, or from above the device ...).

De manière avantageuse, si le clavier comporte plusieurs rangées de touches, la source lumineuse sera composée d'une pluralité d'entités lumineuses, comme représenté sur la figure 1. Cela permet d'obtenir un rayonnement le plus homogène possible.Advantageously, if the keyboard has several rows of keys, the light source will be composed of a plurality of light entities, as shown in Figure 1. This provides the most homogeneous radiation possible.

Outre le faible encombrement de ce système d'éclairage selon l'invention, et le fait qu'il ne consomme aucune énergie au niveau de l'appareil 1, le système d'éclairage décrit présente l'avantage de réaliser un éclairage non agressif des touches de l'appareil. Ceci est notamment important dans un environnement tel qu'une voiture conduite de nuit, dans laquelle tout éclairage trop violent est à proscrire.In addition to the small size of this lighting system according to the invention, and the fact that it consumes no energy at the level of the apparatus 1, the lighting system described has the advantage of providing non-aggressive illumination of the buttons on the device. This is particularly important in an environment such as a car driving at night, in which any too violent lighting is to be avoided.

Bien entendu, l'invention peut être appliquée à tout type d'appareil comportant une touche de commande ou de navigation ou de numérotation qui doit être visible pour l'utilisateur. En particulier, l'invention trouve également son application pour les appareils radio de voiture comportant une barrette extractible lorsque l'utilisateur n'est pas dans sa voiture. La source de rayonnement est alors avantageusement positionnée sur le support de l'auto-radio destiné à recevoir la barrette. D'une manière plus générale, la source de rayonnement peut être positionnée à un endroit quelconque comme représenté sur la figure 3, par exemple dans l'habitacle d'une voiture, sans qu'il soit nécessaire de l'incorporer dans un accessoire dédié de l'appareil dont on souhaite rendre visible la ou les touches.Of course, the invention can be applied to any type of device comprising a control key or navigation or dialing that must be visible to the user. In particular, the invention is also applicable to car radios having an extractable bar when the user is not in his car. The radiation source is then advantageously positioned on the support of the radio for receiving the bar. More generally, the radiation source may be positioned anywhere as shown in FIG. 3, for example in the passenger compartment of a car, without it being necessary to incorporate it into a dedicated accessory. of the device whose key or keys are to be made visible.

Claims (9)

  1. Lighting system for at least one key (2) on a device (1) comprising at least one key, characterized in that, at said key (2), it comprises an area in material reactive to ultraviolet radiation, and an ultraviolet radiation source (3) intended to radiate on said area, said source being positioned in a location (4) that is separate from said device so that the source does not require any power supply in the device.
  2. Lighting system as in claim 1, characterized in that said key (2) is made in said material reactive to ultraviolet radiation.
  3. Lighting system as in claim 1, characterized in that said key (2) is coated with a layer made in said material reactive to ultraviolet radiation.
  4. Lighting system as in any of the preceding claims, characterized in that said device is a portable telephone of mobile telephone type, and in that said key is a navigational key or a dialing key.
  5. Lighting system as in claim 4, characterized in that the source of light radiation is arranged on an office charger (4) able to support the mobile telephone.
  6. Lighting system as in claim 4, characterized in that the light radiation source is arranged on a car-kit (4) able to receive the mobile telephone for hands-free functioning, or on a battery charger of the mobile telephone.
  7. Lighting system as in any of claims 1 to 3, characterized in that said device is a portable telephone of cordless telephone type, and in that said key is a navigational key or a dialing key.
  8. Lighting system as in claim 7, characterized in that the light radiation source is arranged on a base station (4) able to receive the cordless telephone for hands-free functioning, or on the battery charger of the mobile telephone.
  9. Portable radio communication telephone of the type comprising a keypad with a plurality of keys (2), characterized in that, at least at one key, it comprises an area in material reactive to ultraviolet radiation so that said key is lit by any source (3) of ultraviolet radiation separate from said radio communication telephone, so that the source does not require any power supply within said telephone.
EP99402947A 1998-12-14 1999-11-26 Illumination system for keys and its application in portable telephones Expired - Lifetime EP1014402B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9815747A FR2787236B1 (en) 1998-12-14 1998-12-14 KEY ILLUMINATION SYSTEM AND APPLICATION TO PORTABLE PHONES
FR9815747 1998-12-14

Publications (2)

Publication Number Publication Date
EP1014402A1 EP1014402A1 (en) 2000-06-28
EP1014402B1 true EP1014402B1 (en) 2006-03-01

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EP99402947A Expired - Lifetime EP1014402B1 (en) 1998-12-14 1999-11-26 Illumination system for keys and its application in portable telephones

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EP (1) EP1014402B1 (en)
AT (1) ATE319176T1 (en)
DE (1) DE69930092T2 (en)
ES (1) ES2260894T3 (en)
FR (1) FR2787236B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE304214T1 (en) * 2003-04-07 2005-09-15 Feller Ag ILLUMINATED SWITCH

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892959A (en) * 1973-11-02 1975-07-01 Gte Automatic Electric Lab Inc Edge-lighted panel arrangement
GB2077508A (en) * 1980-05-09 1981-12-16 Weatherley Richard Variable resistance pressure- sensitive laminate
US4551598A (en) * 1983-09-28 1985-11-05 Stewart-Warner Corporation Illuminated membrane switch
AU9106291A (en) * 1990-12-20 1992-07-22 Andrew Robertson Drummond Light fittings
JPH09505163A (en) * 1993-11-05 1997-05-20 イェガー，デニー Operator / circuit interface device integrated with display screen
US5777603A (en) * 1993-11-05 1998-07-07 Intertactile Technologies Corporation Flat panel display with optical signal transparent zone

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Publication number Publication date
EP1014402A1 (en) 2000-06-28
FR2787236A1 (en) 2000-06-16
FR2787236B1 (en) 2001-01-12
DE69930092D1 (en) 2006-04-27
ES2260894T3 (en) 2006-11-01
ATE319176T1 (en) 2006-03-15
DE69930092T2 (en) 2006-09-21

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