WO2005017931A1 - Clavier, dispositif electronique et procede de changement d'apparence d'une ou plusieurs touches - Google Patents

Clavier, dispositif electronique et procede de changement d'apparence d'une ou plusieurs touches Download PDF

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Publication number
WO2005017931A1
WO2005017931A1 PCT/EP2004/001450 EP2004001450W WO2005017931A1 WO 2005017931 A1 WO2005017931 A1 WO 2005017931A1 EP 2004001450 W EP2004001450 W EP 2004001450W WO 2005017931 A1 WO2005017931 A1 WO 2005017931A1
Authority
WO
WIPO (PCT)
Prior art keywords
electronic device
keypad
layer
keys
electrochromic material
Prior art date
Application number
PCT/EP2004/001450
Other languages
English (en)
Inventor
Carmen Santa Cruz
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PCT/EP2004/001450 priority Critical patent/WO2005017931A1/fr
Publication of WO2005017931A1 publication Critical patent/WO2005017931A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0202—Constructional details or processes of manufacture of the input device
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/002—Legends replaceable; adaptable
    • H01H2219/0023—Images formed with electrophoretic technology, e.g. by charged pigment particles rearranged by applied electric field, e.g. electronic paper or e-paper, active ink
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/002—Legends replaceable; adaptable
    • H01H2219/006—Snap mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H01H2219/039—Selective or different modes of illumination

Definitions

  • An object of the invention is to bring out an improved keypad enabling easy personalization and a new structure. This object of the invention can be achieved in the manner as shown in any one of claims 1 to 6.
  • Another object of the invention is to bring out an electronic device utilizing the improved keypad. This can be achieved in the manner as in any one of claims 7 to 11.
  • a still further object of the invention is to bring out a method for changing the appearance of one or more keys in a keypad of an electronic device. This can be achieved in the manner as described in any of claims 12 to 14.
  • a key can, depending on the electrochromic material chosen, be changed from an opaque state to transparent state, or from one colour to another. In this manner the possibilities to personalize the looks of the keypad can be increased.
  • the layer of electrochromic material is connected to connecting means for providing an electrical connection to a control means or to a battery so that the connecting means are adapted to allow an up- or down movement of the layer together with the key, the transparency or colour of the layer of electrochromic material in a key can be changed regardless of the position of the key. At least one key can thus be made movable, thus improving the comfort of using the keypad.
  • the effect of changing the colour of a key can be achieved also by using a simpler material in the electrochromic layer.
  • the coloured layer is exchangeable, the user can easily replace it, possibly even with another one having a different colour. This improves the personalization capabilities further.
  • a light source is placed under the layer of electrochromic material, a new manner for back-lighting the keyboard can be obtained. Furthermore, depending on the transparency or colour of the layer of electrochromic material, the feel of personalization can be improved.
  • a symbol marking is applied on or above the layer of electrochromic material, it can be ensured that the possible change of transparency, i.e. when the layer of electrochromic material turns towards opaque, does not negatively affect the user comfort e.g. by screening the key codes.
  • An electronic device comprising a keypad as in any one of claims 1 to 5, and means for defining the transparency or colour of the layer of electrochromic material in a number of keys in the keypad, corresponding to a state of the electronic device, can be used to improve the versatility of the device.
  • the user can be notified of the state of the electronic device.
  • the user control of some applications can be made more instinctive, for example, by setting the appearance of a number of keys to show that these keys are either enabled or disabled.
  • the effect of this feature can be further improved if the transparency or colour is changed responsive to a state change of the electronic device.
  • the keys that are to be used in giving user input can have an appearance differentiating them from other keys of the keypad.
  • Figure 1A shows a keypad comprising a number of keys
  • Figure IB illustrates an electronic device comprising the keypad
  • Figure 2A is a section of a key in the keypad
  • Figure 2B is a top view of a key in the keypad
  • Figure 2C shows an exploded view showing some structural elements of an illuminated key in the keypad
  • Figure 2D shows the illuminated key assembled
  • Figure 3 shows a schematic control means for controlling the keypad
  • Figure 4A shows a schematic swicthing unit used in the control means
  • Figure 4B shows a second switching unit used in the control means
  • Figures 5A and 5B show two predetermined patterns illustrating different transparency or colour of the keys
  • Figure 6 shows an electronic device in communication with a network, a peer electronic device, and with a ticket inspecting device
  • Figures 7A, 7B, and 7C show an electric device, an exchangeable coloured layer, and a layer of electrochromic material for a number of keys.
  • Figure 1A shows a keypad 100 comprising a number of keys 101.
  • keypads There are different kinds of keypads. For example a keypad used in a mobile telephone might have ten number keys (0 to 9) for dialling numbers and then some special keys, such as * and # for giving commands to the network. With such a keypad, some or all of the number keys together with special keys can be used for entering text when necessary.
  • keypads like some comprising two rows of five keys each. Keyboards like those used in computers usually comprise 87 or some 102 keys. In some devices, like stereo recorders, or CD or MP3 players, the number of keys may then be substantially smaller. For understanding the invention, the exact number of keys is irrelevant but the invention may be carried out in different keypads.
  • Figure IB illustrates an electronic device 103 comprising a keypad 100 as shown above. Furthermore, the electronic device 103 comprises a display 105. In addition to examples listed above, the specific examples further comprise different household machines (TV sets, DVD players, washing machines, stoves), their remote controls, and front panels of cars and motorbikes .
  • TV sets, DVD players, washing machines, stoves their remote controls
  • front panels of cars and motorbikes .
  • Figure 2A is a section of a key 101 in the keypad 100.
  • the key 101 comprises a layer 203 of electrochromic material.
  • the layer 203 of electrochromic material is the uppermost layer. In a second embodiment, it is further covered by a protective layer.
  • the layer 203 of electrochromic material is assembled onto a support member 201.
  • the support member may comprise leads 209 from control means 300 to the layer 203 of electrochromic material.
  • leads 209 from control means 300 to the layer 203 of electrochromic material.
  • copper or other metallic wires, or any other suitable means for effecting a change of electric field can be used.
  • the support member 201 resides on switch 200, the switch 200 comprising leads 211 connected to control means 300 for giving user input.
  • the switch 200 is closed, thereby changing the potential in leads 211. This effect can be detected in the control means 300, and, depending on a state of the electronic device 103 whereto the keypad 100 is connected.
  • sealing 207 such as a silicon ring, for isolating the switch 200 from dust, dirt, or moisture.
  • the sealing 207 as well as the support member 201 are optional for carrying out the invention.
  • the leads 209 are connected to two sides of the layer 203 of electrochromic material. Their purpose is to change electric field over the layer 203 of electrochromic material.
  • the electrochromic material changes its transparency or colour in response to a change in the electric field.
  • Figure 2B is a top view of a key in the keypad. Now the layer 203 of electrochromic material is on the top i.e. if it is not completely transparent, it is visible for a user.
  • the layer 203 of electrochromic material may have any form. For aesthetic reasons oval, round, square, and rect- or triangular forms are preferable.
  • the layer 203 of electrochromic material does not need to extend over the whole key 101 but the support member 201 may also form a part of the outer surface thereby protecting the layer 203.
  • Figure 2C shows an exploded view showing some structural elements of an illuminated key 101 in a keypad 100.
  • a coloured layer 205 In addition to the layer 203 of electrochromic material there are shown a coloured layer 205.
  • the coloured layer is preferably at least partly transparent, thereby acting as a filter.
  • a light source 225 such as a lamp
  • the coloured layer 205 should not be opaque.
  • a rim 221 is shown.
  • the layer 203 of electrochromic material may further comprise a symbol marking 217, such as a printing or molded form, applied on or above the layer 203 of electrochromic material, representing the value of the key 101.
  • Figure 2D shows the illuminated key 101 assembled in the keypad 100.
  • the coloured layer 205 is assembled underneath the layer 203 of electrochromic material.
  • the rim 221 penetrates into corresponding rails 223 preferably assembled onto the support 213 of switch 217.
  • the leads 209 for leading a voltage to the layer 203 of electrochromic material can be joined through the rails to the rim 221 which preferably is then metallic for providing a good electrical conductivity.
  • the light source 225 can be assembled below the coloured layer 205 and the layer 203 of electrochromic material.
  • the layer 103 of electrochromic material can have an opaque resting state. According to an input control signal, a number of predetermined keys 101 are changed to transparent state.
  • the coloured layer 205 is preferably omitted out, because then the layer 203 of electrochromic material can be changed to have a particular colour by means of changing the electric field over it.
  • Control means 300 comprises a switching block 315 controlled by a processing unit 303, such as a microprocessor.
  • the processing unit 303 is connected via a bus to display 105, to memory 305, and to communication means 307.
  • Communication means 307 comprise Bluetooth, infra-red, or cellular radio communications means and can be used also for receiving of data.
  • the switching block 315 comprises a number of switch units 311.
  • the switch units 311 are used to control the electric field over the layer 203 of electrochromic material in a number of keys 101 in the keypad 100. This can be carried out by switching a voltage from a rechargeable battery 301 to a number of keys 101.
  • FIG 4A shows a schematic of a switch unit 311 used in the control means 300.
  • a switch SW is controllable by a control signal from the processing unit 303.
  • the switch SW can connect terminal Ti to terminal T 2 or to terminal T 3 .
  • the resistance over the practically infinite (several k ⁇ ) resistor 401 vanishes, so that the voltage can be risen.
  • the potentiometer 403 controllable by the processing unit 303 can also be used to adjust the electric field over the layer 203 of electrochromic material to have almost same transparency or colour than the layer 103 of electrochromic material in all other keys 101 has.
  • a transition of a layer 203 of electrochromic material in a key 101 from the transparent state to opaque state takes place as follows: the position of the switch SW in the corresponding switching unit 311 in the switching block 315 is changed from T 2 to T 3 . After a predetermined time period, i.e. after some milliseconds, the position of the switch SW is returned to T 2 .
  • means 317 for reversing the electric field.
  • Figure 4B shows one of such means 317 for reversing the electric field, comprising switch SW2, controllable by the processing unit 303, and adapted to connect terminal T 4 from the rechargeable battery to terminal T 5 or terminal T s depending on its position.
  • the electric field over a layer 203 of electrochromic material can be reversed by changing the position of switch SW2 from T 5 to T 5 if the switch SW2 was in position terminal T 6 when the preceding state transition (e.g. from opaque state to transparent state) was performed the switch SW2 connecting terminal T 4 to terminal T 5 .
  • the preceding state transition e.g. from opaque state to transparent state
  • a reason for providing a plurality of switching units 311 in the switching block 315 is that, in this manner, all transitions involving one direction of electric field only can be performed simultaneously. Because there are now only two 317 means for reversing the electric current, some components can be saved.
  • Figures 5A and 5B show two predetermined patterns illustrating different transparency or colour patterns for a number of keys 101. For example, assuming that in the beginning all keys 101 are in transparent state, a state of the electronic device 103 changes so that the electronic device 103 is to present a Y-like symbol (e.g. for positive acknowledgement) in the keypad 100. Then keys marked black in Figure 5A would be changed to opaque state.
  • a state of the electronic device 103 changes so that the electronic device 103 is to present a Y-like symbol (e.g. for positive acknowledgement) in the keypad 100.
  • keys marked black in Figure 5A would be changed to opaque state.
  • Figure 5B show an example wherein the state of the electronic device 103 changes so that it is to present a N-like symbol (e.g. for negative acknowledgement) in the keypad.
  • a N-like symbol e.g. for negative acknowledgement
  • the keys 101 marked black in Figure 5B are turned opaque. But were the initial state of that of Figure 5A, then some keys were to changed to transparent state and some to opaque state.
  • this change can be performed stepwise: first a first kind of transition, then a second kind of transition.
  • the patterns are preferably stored in memory 305, such as Random Access Memory RAM.
  • the processing unit 303 is executing a program code that retrieves from the RAM a pattern via the bus, then compares a present setting of each key 101 and then does changes were necessary.
  • the algorigthm need not be that complex, so the comparison step can be neglected if the processing unit 303 is adapted to change the state of the layer 203 of electrochromic material in each key 101 of the keypad 100.
  • Figure 6 shows an electronic device in communication with a network 603, a peer electronic device 103B, and with a ticket inspecting device 601. The communication connection can be made via communication means 307.
  • connection between the network 603 may be made through cellular communication means: particular examples comprise means for GSM, GPRS, WLAN, or UMTS radio communications.
  • Particular examples comprise Bluetooth, infra-red, visual, or audial communication means.
  • the pattern to be shown in the keypad 100 can be loaded from a server 603B in the network 600.
  • the server 603B can be a web server.
  • the server 603B has a database 604 or other register where different patterns can be stored.
  • the server 603B sends a pattern either as a push or pull-type service.
  • the server 603B can be a game server. If the server 603B sends a new game to the electronic device 103, the game can include a new pattern.
  • the server 603B could also transmit a pattern message to the electronic device 103 which then would display the pattern in the keypad 100.
  • the pattern may be loaded from a peer electronic device 103B which has stored it in its register 605. In this manner, users can build user groups. After storing the same pattern in both electronic devices 103, 103B, the pattern on the keypad 100 of the electronic device 103 and/or the electronic device 103B can be changed whenever the devices detect the presence of each other, or if a first electronic device 103 detects the peer electronic device 103B. To facilitate the detection process, an identifier, such as IMSI, MSISDN, or a Bluetooth address, of each electronic device 103, 103B belonging to the same group can be stored into the memory 305 of the electronic devices 103, 103B. This service can be network-assisted as well, having then some characteristics of the solution discussed in the preceding paragraph.
  • the pattern on the keypad 100 can be changed responsive to an arrival of a message from a network 603 to which the electronic device 103 is connected; an incoming telephone call or other connection; or to termination of a telephone call or other connection.
  • the pattern to display in the keypad 100 can also be provided from a ticket inspection device 601.
  • the ticket inspection device 601 would compare an identifier in the message received from the electronic device 103 with identifiers stored in database 606, or stored in other register. If the result of the comparison would be that a service, such as entering to a tram, bus, subway, airplane, movie theatre, etc., would be allowed, then a positive acknowledgement would be shown on the keypad 100 of the electronic device 103. In the negative case, a negative acknowledgement could be shown.
  • showing an acknowledgement in the keypad 100 can be used in checking digital signatures or data integrity in general.
  • Colour profiles can be defined as matrixes having dimensions equivalent to the number of keys 101 in each direction, such as 4x3 for a typical keypad consisting of 12 keys.
  • Each entry in the matrix can store logical values (in case of a bi-state key) or a vector (e.g. 3 dimensional for RGB) to represent a particular colour in case of multi-colour electrochromic material.
  • the colour matrixes are mapped to the corresponding matrices of electrical states (e.g. value indicating the current or voltage) necessary to achieve the electrochromic change in the layer 203 of electrochromic material. These values will then be used to generate the adequate control signals.
  • the control means 300 may comprise three or even more switching blocks 315, each having leads 209 to the layers 103 of electrochromic material in the keys 101 of the keypad 100.
  • the profiles can be pre-stored by the manufacturer, or defined by the user by means of an editing application that represents the keypad 100 and permits the user to select the colour for each key 101.
  • the colour or transparency profiles can be made application or function dependent (e.g. some or all keys 101 flash in a different colour when a message, such as an SMS or a Multimedia Message arrives) .
  • These colour profiles can also be loaded dynamically upon request of the user, automatically during the start-up of a particular application or by the execution of a game among other possibilities.
  • the colour profiles can also be generated dynamically by an application (e.g. a game) to indicate change of status in the application (e.g. change of gaming level) and/or to indicate a new set (or sets) of active keys 101 that can be used to give input for the application.
  • the application and the control means 300 may be in real-time connection to each other, e.g. using a communication channel.
  • Figures 2A to 2C is shown in Figures 7A to 7C.
  • Figures 7A, 7B, and 7C show an electronic device 103, a matrix 705 comprising a number of coloured layers 205, and a layer 203 of electrochromic material for a number of keys 101.
  • the electronic device 103 comprises a display 105, and a plurality of switches 200.
  • the switches 200 are grouped to form receiving means 701 for matrix 705 and for key matrix 720.
  • the electronic device 103 may further comprise lock means 703, such as friction locks or snap-locks, for holding the matrix 705 and the key matrix 720.
  • lock means 703 such as friction locks or snap-locks, for holding the matrix 705 and the key matrix 720.
  • Figure 7B shows the matrix 705 comprising a number of coloured layers 205 in more detail.
  • These coloured layers 205 are preferably partially transparent, and act as filters.
  • the frame 711 around each coloured layer 205 is preferably metallic, such as of copper or silver, for providing an electric connection. For this purpose, it is beneficial to divide the frames 711 into at least two parts each, the parts being electrically isolated from each other.
  • the frames can also be only on two sides of a coloured layer 205. This helps in achieving a unique transparency or color in the layer 203 of electrochromic material.
  • the base 715 of the matrix 705 is preferably of elastic material, such as silicon.
  • Figure 7C shows a key matrix 720.
  • the key matrix 720 comprises a number of layers 203 of electrochromic material, and lock means 723 that fit to the lock means 703 in the electronic device 103.
  • the key matrix 720 presses the matrix 705 against the receiving means 701 in the electronic device 103 so that it is firmly in place.
  • the layers 203 of electrochromic material can have electric connectors up to the surface of the matrix 705, provided that there is a proper voltage supply in the receiving means 701 in the electronic device 103.
  • bi- stable types of electrochromic materials have the advantage that once the electric field has been applied, the material can maintain its state even in the absence of an electric field until the electric field is reversed. Consequently, it is very power efficient.
  • new bi-stable eletrochromic materials having characteristics suitable for fast switching have also been developed.
  • One of the underlying reasons for their suitability is the ability to quickly increase light absorption by using nanoparticles .
  • electrochromic materials can change to different colours according to electrical input.
  • a list of some further materials suitable for use in the layer 103 of electrochromic material are thereby incorporated as reference: http://iournal.librarv.iisc.ernet.in/vol200106/paper5/madhuri.pdf
  • a still further embodiment, combinable with other embodiments discussed above, includes a larger number (2, 3, 4, 5) of layers 203 of electrochromic material above each other in a sandwich-like manner.
  • the different layers 203 may then comprise different electrochromic materials adapted to change transparency or color. Each layer can be controlled separately.
  • the symbol marking 217 of a key 101 can then be implemented in the electrochromic material in one layer 203, such as in the top layer or the layer underneath it. In this manner, the symbol marking 217 can be changed visible when necessary, and hidden at other times.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)

Abstract

L'invention concerne un procédé de changement d'apparence d'une ou plusieurs touches (1) dans un clavier (100) d'un dispositif électronique (103), qui est caractérisé en ce que l'apparence de la/les touche(s) (101) est modifiée par changement individuel de la transparence ou de la couleur d'un élément électrochromique (203) dans chaque touche répondant à un signal de commande.
PCT/EP2004/001450 2004-02-16 2004-02-16 Clavier, dispositif electronique et procede de changement d'apparence d'une ou plusieurs touches WO2005017931A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2004/001450 WO2005017931A1 (fr) 2004-02-16 2004-02-16 Clavier, dispositif electronique et procede de changement d'apparence d'une ou plusieurs touches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2004/001450 WO2005017931A1 (fr) 2004-02-16 2004-02-16 Clavier, dispositif electronique et procede de changement d'apparence d'une ou plusieurs touches

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WO2005017931A1 true WO2005017931A1 (fr) 2005-02-24

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1727172A1 (fr) * 2005-05-27 2006-11-29 Mitac Technology Corp. Clavier avec réseau électroluminescent et touche associée
WO2009109813A1 (fr) * 2008-03-05 2009-09-11 Sony Ericsson Mobile Communications Ab Rétroéclairage à contraste élevé
CN112165803A (zh) * 2020-09-04 2021-01-01 Oppo广东移动通信有限公司 电子设备及其壳体组件
CN113946179A (zh) * 2020-07-17 2022-01-18 华为技术有限公司 一种电子设备

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EP0872996A2 (fr) * 1997-04-17 1998-10-21 Nokia Mobile Phones Ltd. Interface d'utilisateur pour un appareil téléphonique muni de signalisations lumineuses
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US5950809A (en) * 1996-07-03 1999-09-14 U.S. Philips Corporation Keyboard with multifunction keys and apparatus including such a keyboard
WO2001019056A1 (fr) * 1999-09-06 2001-03-15 Siemens Aktiengesellschaft Eclairage de clavier et d'ecran d'affichage
WO2001077802A1 (fr) * 2000-04-11 2001-10-18 Gilbert Sabban Clavier afficheur
US20020044149A1 (en) * 2000-08-31 2002-04-18 Mccarthy Kevin Handset personalisation
US6408187B1 (en) * 1999-05-14 2002-06-18 Sun Microsystems, Inc. Method and apparatus for determining the behavior of a communications device based upon environmental conditions
WO2003017623A2 (fr) * 2001-08-17 2003-02-27 Wildseed, Ltd. Telephonie mobile completee par un systeme de visualisation

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5408060A (en) * 1991-01-29 1995-04-18 Nokia Mobile Phones Ltd. Illuminated pushbutton keyboard
WO1995012841A1 (fr) * 1993-11-01 1995-05-11 Zikit Integrated Systems Ltd. Clavier interactif
US5950809A (en) * 1996-07-03 1999-09-14 U.S. Philips Corporation Keyboard with multifunction keys and apparatus including such a keyboard
US5818361A (en) * 1996-11-07 1998-10-06 Acevedo; Elkin Display keyboard
EP0872996A2 (fr) * 1997-04-17 1998-10-21 Nokia Mobile Phones Ltd. Interface d'utilisateur pour un appareil téléphonique muni de signalisations lumineuses
US5914676A (en) * 1998-01-22 1999-06-22 Sony Corporation Multi-language display keypad
US6408187B1 (en) * 1999-05-14 2002-06-18 Sun Microsystems, Inc. Method and apparatus for determining the behavior of a communications device based upon environmental conditions
WO2001019056A1 (fr) * 1999-09-06 2001-03-15 Siemens Aktiengesellschaft Eclairage de clavier et d'ecran d'affichage
WO2001077802A1 (fr) * 2000-04-11 2001-10-18 Gilbert Sabban Clavier afficheur
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