(19)
(11)EP 2 437 140 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
07.08.2019 Bulletin 2019/32

(21)Application number: 10177483.4

(22)Date of filing:  17.09.2010
(51)International Patent Classification (IPC): 
G06F 3/02(2006.01)

(54)

Method and apparatus pertaining to a touch typing-friendly grid-patterned keyboard

Verfahren und Vorrichtung, die zu einer berührungseingabefreundlichen gittergemusterten Tastatur gehören

Procédé et appareil appartenant à un clavier à motifs de grille de type tactile


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(43)Date of publication of application:
04.04.2012 Bulletin 2012/14

(73)Proprietor: BlackBerry Limited
Waterloo, ON N2K 0A7 (CA)

(72)Inventors:
  • Griffin, Jason Tyler
    Waterloo Ontario N2L 3W8 (CA)
  • Rak, Roman
    Waterloo Ontario N2L 3W8 (CA)

(74)Representative: Roberts, Gwilym Vaughan et al
Kilburn & Strode LLP Lacon London 84 Theobalds Road
London WC1X 8NL
London WC1X 8NL (GB)


(56)References cited: : 
WO-A2-2006/130747
US-A- 5 689 253
US-A1- 2004 229 663
US-A- 5 515 763
US-A1- 2003 206 761
US-A1- 2007 247 429
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    Technical Field



    [0001] This disclosure relates generally to keyboards.

    Background



    [0002] Keyboards are well known in the art. This includes keyboards having a plurality of alphabetic keys such as the classic so-called QWERTY keyboard. The latter typically have keys disposed in a characteristic offset pattern that dates back to the 1800's and represents a mechanical layout for typewriter keys that minimized typebar collisions. Though such a need no longer persists (as modern keyboards, of course, lack typebars) modern keyboards typically still employ that same characteristic offset pattern.

    [0003] This is largely because modern typists learn, to a lesser or a greater extent, to touch type on traditional offset-pattern keyboards; that is, to type without directly viewing the keys. Touch typing comprises, in considerable part, the development of muscle memory regarding the proper location of at least the alphabetic keys. And once a person has developed this muscle memory they typically have little or no inclination to replace or supplement that skill and experience with something new simply to make use of a differently-configured keyboard. And so it goes - to a very large extent we can be said to use and prefer offset-pattern keyboards because we initially learn to type using offset-pattern keyboards. For many application settings such a state of being is fine. Occasional alternative approaches for keyboard layout (such as the Dvorak keyboard) appear from time to time but the classic QWERTY offset-pattern keyboard satisfies the needs of most users.

    [0004] Small keyboards, such as the keyboards on many so-called smartphones, are a noted exception and often employ instead an evenly-spaced grid pattern. This choice has not met with undue user dissatisfaction, likely because these keyboards are so small that the user cannot employ their offset pattern-based touch-typing skills (instead the typical user employs their thumbs to interact with the keyboard). New medium-sized products (such as netbooks) are appearing, however, that present a conundrum in these regards. The keyboards for these devices are large enough to physically accommodate touch typing but are small enough to make it challenging to provide usefully-sized and positioned keys to comport with such touch typing.

    [0005] WO 2006/130747 relates to a small form factor keyboard using keys with offset peaks.

    [0006] US 5689253 relates to an ergonomic keyboard apparatus with a plurality of concave arrays.

    [0007] US 5515763 relates to a keyboard having tactile, shaped key tops.

    [0008] US 2003/206761 relates to a computer keyboard having surface textured home keys.

    Brief Description of the Drawings



    [0009] 

    FIG. 1 comprises a top plan detail view as configured in accordance with the prior art;

    FIG. 2 comprises a flow diagram as configured in accordance with various embodiments of the present disclosure;

    FIG. 3 comprises a perspective view as configured in accordance with various embodiments of the present disclosure;

    FIG. 4 comprises a perspective view as configured in accordance with various embodiments of the present disclosure;

    FIG. 5 comprises a top plan view as configured in accordance with various embodiments of the present disclosure;

    FIG. 6 comprises a top plan detail view as configured in accordance with various embodiments of the present disclosure; and

    FIG. 7 comprises a block diagram as configured in accordance with various embodiments of the present disclosure.



    [0010] Elements in these figures are generally drawn to a relative scale. Common but well-understood elements that are useful or necessary in a commercially feasible embodiment may not be depicted in order to facilitate a less obstructed view of these various embodiments of the present disclosure. Certain actions or steps may be described or depicted in a particular order of occurrence while those skilled in the art will understand that such specificity with respect to sequence is not actually required. The terms and expressions used herein have the ordinary technical meaning as is accorded to such terms and expressions by persons skilled in the technical field as set forth above except where different specific meanings have otherwise been set forth herein.

    [0011] The invention is defined by the features laid down in the independent claims 1 and 13. Further enhancements are provided by the dependent claims.

    Detailed Description



    [0012] Generally speaking, pursuant to many of these various embodiments, a keyboard can be comprised of a plurality of alphabetic keys that are disposed in an evenly-spaced grid pattern with respect to one another. In any event, these keys have keycaps configured to comport with touch typing as with a keyboard having a plurality of alphabetic keys that are disposed in an offset pattern (such as the classic QWERTY offset-pattern typewriter-styled keyboard). By one approach, these keys can have keycaps having bilaterally-nonsymmetrical tactile features that at least substantially match standard touch-typing finger positions.

    [0013] By one approach these tactile features can comprise an indentation. If desired, these keycaps can share a same form factor. In such a case, some of the keycaps for the alphabetic keys can be disposed on the keyboard at a 180 degree rotation as compared to others of the alphabetic character keycaps.

    [0014] So configured, these teachings permit use of an evenly-spaced grid pattern keyboard in application settings where such is desired (to serve, for example, particular functional or aesthetic purposes). At the same time, however, these teachings will permit a touch typist to make ordinary and traditional use of such a keyboard notwithstanding that the keyboard is not configured in an offset pattern such as the traditional typewriter-style offset pattern. In particular, the touch typist's muscle memory will interact naturally and correctly with such a keyboard notwithstanding initial appearances to the contrary.

    [0015] These teachings can be realized in highly cost-effective ways if desired. It is possible, for example, to use the same keycap form factor for all of the alphabetic keys notwithstanding the selective and sometimes different positioning of each keycap's bilaterally-nonsymmetrical tactile feature.

    [0016] These and other benefits may become clearer upon making a thorough review and study of the following detailed description. Referring now to the drawings, and in particular to FIG. 1, it may be helpful to first provide an example of a prior art keyboard 100 that employs an offset pattern for the keys 101. In this typical example there are rows of alphabetic keys. More specifically, this keyboard 100 has a first such row 102, a second such row 103, and a third such row 104. The alphabetic keys 101, in turn, are viewed as being "offset" because the columns formed by such rows are not coaxially vertically aligned. Instead, and as represented by the curved lines denoted by reference numeral 105, the keys 101 in these columns are vertically offset from one another.

    [0017] A touch typist, whose muscle memory presumes such an offset pattern, will therefore "know" where a specific key is in each of these rows in a way that accounts for and relies upon such offsets. Accordingly, a touch typist utilizing a keyboard that does not employ such an offset pattern will typically not properly locate all of the keys with their fingers (without looking) because the location of at least some of the keys will not accord with their muscle memory in these regards.

    [0018] Referring now to FIG. 2, an illustrative process 200 that is compatible with many of these teachings will now be presented. Step 201 of this process 200 provides a plurality of keycaps for alphabetical keys. Illustrative but non-limiting examples in these regards are shown in FIGS. 3 and 4. By one approach, these alphabetic keycaps 300 have an eccentric tactile feature ("eccentric" in that the tactile feature is not centrally located on the keycap 300 and "tactile" in that the feature is discernable to a typist via their sense of feel in their fingertips).

    [0019] In these particular examples, and for the sake of illustration and not by way of limitation, this eccentric tactile feature comprises a bilaterally-nonsymmetrical tactile feature in the form of an indentation 302 on the upper surface 301 of the kepcap 300. By one approach this indentation 302 is sufficiently deep to permit its detection by sense of feel. Other haptically-sensible configurations are possible, of course. As further examples in these regards, and again without intending any limitations, this eccentric tactile feature could comprise any of a plurality of small bumps, a raised area, a plurality of ridge lines, a different material having a different feel from the remainder of the keycap's upper surface 301, and so forth. These teachings will also accommodate using combinations of various differing tactile elements to form, in the aggregate, the eccentric tactile feature.

    [0020] If desired, these keycaps 300 can have a corresponding alphabetic character 303 formed thereon. By one approach this alphabetic character 303 can be disposed within the eccentric tactile feature (for example, by being centrally disposed therein). These teachings will readily accommodate any approach of choice in these regards. For example, but again without intending any particular limitations in these regards, these alphabetic characters 303 can be integrally formed as part of the keycap 300 (using, for example, a molding process to form the keycap 300), or can be printed on the kepcap 300 or placed on the kepcap 300 as, for example, a sticker or decal. These and other techniques are well known in the art. As the present teachings are not particularly sensitive to any particular selection in these regards, for the sake of brevity further elaboration here will not be provided.

    [0021] Although these keycaps 300 have an eccentric tactile feature, and although this eccentric tactile feature serves a particular purpose as shown below, by one approach a single keycap form factor will suffice for all of the alphabetic keys on a given keyboard if desired. In particular, some of the keycaps can make use of such a keycap 300 in a first orientation as shown in FIG. 3 (where the eccentricity favors the left side of the keycap 300) while others of the keycaps can make use of such a keycap 300 in a second orientation as shown in FIG. 4 (where the keycap 300 has been rotated 180 degrees as compared to the keycap 300 of FIG. 3 and where the eccentricity now favors the right side of the keycap 300). Such an approach can introduce a favorable economy of scale that contributes to reduced costs of manufacturing a keyboard using such keycaps 300.

    [0022] Referring again to FIG. 2, step 202 of this process 200 then provides for forming a keyboard by disposing this plurality of keycaps 300 in an evenly-spaced grid pattern with respect to one another. FIG. 5 presents an illustrative example in these regards. In this example, the keyboard 500 has rows of keycaps 300 including a first, second, and third row of alphabetic keycaps (as denoted by reference numerals 102, 103, and 104, respectively). Pursuant to the aforementioned evenly-spaced grid pattern the corresponding columns of keycaps 300 are coaxially vertically aligned. This, of course, greatly differentiates the physical layout of these keycaps 300 as compared to a keyboard that employs an offset pattern.

    [0023] In this illustrative example the keycaps 300 of the first row 102 and the third row 104 all have their bilaterally-nonsymmetrical tactile feature oriented towards the left. The keycaps 300 of the second row 103, however, all have their bilaterally-nonsymmetrical tactile feature oriented towards the right. By one approach, as noted above, this can comprise rotating the keycaps comprising the second row 103 180 degrees as compared to the keycaps of the first and third rows 102 and 104. So configured, these bilaterally-nonsymmetrical tactile features will comport with the expectations of a typical touch typist. That is to say, the relative location of these bilaterally-nonsymmetrical tactile features comport with touch typing muscle memory as corresponds to a keyboard having its alphabetic keys disposed in an offset pattern notwithstanding that this keyboard's alphabetic keys are not disposed in an offset pattern.

    [0024] This point may perhaps be better appreciated upon referencing FIG. 6. In particular, here it can be seen that a same curve 105 as one can derive for a typical typewriter-style offset pattern (see FIG. 1 described above) is derived here with respect to the indented areas 302 on the keycaps 300. As these indented areas 302 are detectable by the typist's fingers, these keycaps 300 inherently feel right to the typist and readily accommodate the typist's muscle memory that accords with an offset-pattern keyboard.

    [0025] In the examples described above all of the alphabetic keys have a keycap that includes an eccentric tactile feature. Other possibilities exist, however. As one example, the very important (to a traditional touch typist) "F" and "J" keys may be the only kepcaps to include such a feature. As another example, the so-called home keys (i.e., the "A," "S," "D," "F," "J," "K," "L," and ";" keys) may be the only keycaps to include such a feature. Generally speaking, however, for many application settings it may be particularly useful to so configure all of the alphabetic keys such that the complete alphabet is so characterized.

    [0026] These teachings therefore permit a keyboard to utilize an evenly-spaced grid pattern without frustrating traditional touch typists who seek to leverage their muscle memory as pertains to offset-pattern keyboards. This, in turn, permits the use of a wider range of differently-sized touch-typing friendly keyboards than one ordinarily associates with offset-pattern keyboards. In particular, smaller keyboards can now serve in these regards than has ordinarily been the case.

    [0027] The above-described processes are readily enabled using any of a wide variety of available, readily configured platforms. FIG. 7 provides one simple illustrative example in these regards. In this example, a so-called netbook 700 can comprise a control circuit 701 (such as a programmable microprocessor) that operably couples to such a keyboard 702 and a wireless transceiver 703 (such as a Bluetooth-compatible transceiver, an 802.11 family-compatible transceiver, a wide-area transceiver such as a cellular telephony-styled transceiver, and so forth). Though netbooks tend towards smaller (than traditional laptops) form factors, these teachings permit the use of a keyboard that will better accommodate the space limitations of such a netbook (by using, for example, an evenly-spaced grid pattern for at least the alphabetic keys of the keyboard) while preserving the natural and inherent ability of the keyboard 702 to comport with the muscle memory of a touch typist who learned their touch typing with an offset-pattern keyboard.

    [0028] These teachings can be readily leveraged in favor of a wide variety of differently sized and purposed platforms. It will also be appreciated that these teachings can be easily scaled to similarly accommodate muscle memory skills for a variety of offset-pattern keyboards beyond the traditional typewriter-style offset pattern.

    [0029] Those skilled in the art will recognize that a wide variety of modifications, alterations, and combinations can be made with respect to the above described embodiments and that such modifications, alterations, and combinations are to be viewed as being within the ambit of the inventive concept.


    Claims

    1. An apparatus comprising:

    a keyboard (500, 702) comprising a plurality of alphabetic keys (101) that are disposed in an evenly-spaced grid pattern with respect to one another, wherein the alphabetic keys have keycaps (300) having a common form factor including an eccentric tactile feature, said eccentric tactile features being vertically offset from one another in a curved configuration to substantially match standard touch-typing finger positions,

    and wherein the keycaps are configured to provide an upper surface (301) with the eccentric tactile feature, the keycaps being disposed in a different one of two different orientations in adjacent rows.


     
    2. The apparatus of claim 1 wherein the eccentric tactile feature comprises an indentation (302).
     
    3. The apparatus of claim 1 further comprising:

    a wireless transceiver (703);

    a control circuit (701) operably coupled to the wireless transceiver and to the keyboard.


     
    4. The apparatus of claim 1 wherein the alphabetic keys comprise, at least in part, an "F" key and a "J" key.
     
    5. The apparatus of claim 4 wherein the alphabetic keys comprise, at least in part, a home row (103) of alphabetic keys.
     
    6. The apparatus of claim 5 wherein the alphabetic keys represent a complete alphabet.
     
    7. The apparatus of claim 1 wherein the
    keycaps (300) are provided with bilaterally-nonsymmetrical tactile features.
     
    8. The apparatus of claim 7 wherein the bilaterally-nonsymmetrical tactile features comprise indentations (302) in an upper surface (301) of the keycaps.
     
    9. The apparatus of claim 7 wherein alphabetic characters as correspond to each of the alphabetic keys are disposed within the bilaterally-nonsymmetrical tactile features.
     
    10. The apparatus of claim 9 wherein the alphabetic characters as correspond to each of the alphabetic keys are centrally disposed within the bilaterally-nonsymmetrical tactile features.
     
    11. The apparatus of claim 10 wherein some of the keycaps for the alphabetic keys are disposed on the keyboard at a 180 degree rotation as compared to others of the keycaps for the alphabetic keys.
     
    12. The apparatus of claim 7 further comprising:

    a wireless transceiver (703);

    a control circuit (701) operably coupled to the wireless transceiver and to the keyboard.


     
    13. A method comprising:

    providing (201) a plurality of keycaps (300) for alphabetic keys (101), each having a common form factor including an eccentric tactile feature formed on an upper surface (301) thereof

    forming (202) a keyboard (500, 702) by disposing a plurality of alphabetic keys (101) in an evenly-spaced grid pattern with respect to one another, wherein the alphabetic keys have said keycaps being disposed in a different one of two different orientations in adjacent rows, such that the eccentric tactile features are vertically offset from one another in a curved configuration to substantially match standard touch-typing finger positions.


     
    14. The method of claim 13 wherein disposing the plurality of keycaps in a different one of two different orientations in adjacent rows comprises disposing some of the plurality of keycaps in a first orientation and some of the plurality of keycaps in a second orientation that is rotated 180 degrees with respect to the first orientation.
     
    15. The method of claim 13 wherein disposing the plurality of keycaps in a different one of two different orientations in adjacent rows comprises disposing all of the keycaps that are in a first and third row (102 and 104) in the first orientation and all of the keycaps in a second row (103) in the second orientation.
     


    Ansprüche

    1. Vorrichtung, umfassend:

    eine Tastatur (500, 702), umfassend eine Vielzahl von Buchstabentasten (101), die in einem gleichmäßig beabstandeten Gittermuster zueinander angeordnet sind, wobei die Buchstabentasten Tastenkappen (300) mit einem gemeinsamen Formfaktor aufweisen, umfassend ein exzentrisches fühlbares Merkmal, wobei die exzentrischen fühlbaren Merkmale in einer gewölbten Konfiguration vertikal voneinander versetzt sind, um im Wesentlichen mit Standardblindschreibfingerpositionen zu übereinstimmen,

    und wobei die Tastenkappen dazu konfiguriert sind, eine obere Fläche (301) mit dem exzentrischen fühlbaren Merkmal bereitzustellen, wobei die Tastenkappen in einer unterschiedlichen von zwei unterschiedlichen Ausrichtungen in benachbarten Reihen angeordnet sind.


     
    2. Vorrichtung nach Anspruch 1, wobei das exzentrische fühlbare Merkmal eine Vertiefung (302) umfasst.
     
    3. Vorrichtung nach Anspruch 1, weiterhin umfassend:

    einen drahtlosen Transceiver (703);

    eine Steuerschaltung (701), die funktionsfähig mit dem drahtlosen Transceiver und der Tastatur gekoppelt ist.


     
    4. Vorrichtung nach Anspruch 1, wobei die Buchstabentasten zumindest zum Teil eine "F"-Taste und eine "J"-Taste umfassen.
     
    5. Vorrichtung nach Anspruch 4, wobei die Buchstabentasten zumindest zum Teil eine mittlere Reihe (103) von Buchstabentasten umfassen.
     
    6. Vorrichtung nach Anspruch 5, wobei die Buchstabentasten ein vollständiges Alphabet darstellen.
     
    7. Vorrichtung nach Anspruch 1, wobei die Tastenkappen (300) mit bilateral unsymmetrischen fühlbaren Merkmalen versehen sind.
     
    8. Vorrichtung nach Anspruch 7, wobei die bilateral unsymmetrischen fühlbaren Merkmale Vertiefungen (302) in einer oberen Fläche (301) der Tastenkappen umfassen.
     
    9. Vorrichtung nach Anspruch 7, wobei Buchstaben entsprechend jeder der Buchstabentasten innerhalb der bilateral unsymmetrischen fühlbaren Merkmale angeordnet sind.
     
    10. Vorrichtung nach Anspruch 9, wobei die Buchstaben entsprechend jeder der Buchstabentasten zentral innerhalb der bilateral unsymmetrischen fühlbaren Merkmale angeordnet sind.
     
    11. Vorrichtung nach Anspruch 10, wobei einige der Tastenkappen für die Buchstabentasten auf der Tastatur in einer 180-Grad-Drehung im Vergleich zu anderen der Tastenkappen für die Buchstabentasten angeordnet sind.
     
    12. Vorrichtung nach Anspruch 7, weiterhin umfassend:

    einen drahtlosen Transceiver (703);

    eine Steuerschaltung (701), die funktionsfähig mit dem drahtlosen Transceiver und der Tastatur gekoppelt ist.


     
    13. Verfahren, umfassend:

    Bereitstellen (201) einer Vielzahl von Tastenkappen (300) für Buchstabentasten (101), wobei jede einen gemeinsamen Formfaktor aufweist, umfassend ein exzentrisches fühlbares Merkmal, das auf einer oberen Fläche (301) davon ausgebildet ist,

    Bilden (202) einer Tastatur (500, 702) durch Anordnen einer Vielzahl von Buchstabentasten (101) in einem gleichmäßig beabstandeten Gittermuster zueinander, wobei die Buchstabentasten die Tastenkappen in einer unterschiedlichen von zwei unterschiedlichen Ausrichtungen in benachbarten Reihen angeordnet aufweisen, so dass die exzentrischen fühlbaren Merkmale in einer gewölbten Konfiguration vertikal voneinander versetzt sind, um im Wesentlichen mit Standardblindschreibfingerpositionen zu übereinstimmen.


     
    14. Verfahren nach Anspruch 13, wobei das Anordnen der Vielzahl von Tastenkappen in einer unterschiedlichen von zwei unterschiedlichen Ausrichtungen in benachbarten Reihen ein Anordnen einiger von der Vielzahl von Tastenkappen in einer ersten Ausrichtung und einiger von der Vielzahl von Tastenkappen in einer zweiten Ausrichtung, die um 180 Grad in Bezug auf die erste Ausrichtung gedreht ist, umfasst.
     
    15. Verfahren nach Anspruch 13, wobei das Anordnen der Vielzahl von Tastenkappen in einer unterschiedlichen von zwei unterschiedlichen Ausrichtungen in benachbarten Reihen ein Anordnen aller Tastenkappen, die in einer ersten und einer dritten Reihe (102 und 104) sind, in der ersten Ausrichtung und aller Tastenkappen, die in einer zweiten Reihe (103) sind, in der zweiten Ausrichtung umfasst.
     


    Revendications

    1. Appareil comprenant :

    un clavier (500, 702) comprenant une pluralité de touches alphabétiques (101) qui sont disposées dans un motif de grille espacé de manière régulière les unes par rapport aux autres, où les touches alphabétiques ont des dessus de touche (300) ayant un facteur de forme commun comportant un élément tactile excentrique, lesdits éléments tactiles excentriques étant décalés verticalement les uns des autres dans une configuration incurvée pour correspondre essentiellement à des positions de doigts en dactylographie standard,

    et dans lequel les dessus de touche sont configurés pour fournir une surface supérieure (301) avec l'élément tactile excentrique, les dessus de touche étant disposés dans l'une différente de deux orientations différentes dans des rangées adjacentes.


     
    2. Appareil de la revendication 1, dans lequel l'élément tactile excentrique comprend une indentation (302) .
     
    3. Appareil de la revendication 1, comprenant en outre :

    un émetteur-récepteur sans fil (703) ;

    un circuit de commande (701) couplé de manière fonctionnelle à l'émetteur-récepteur sans fil et au clavier.


     
    4. Appareil de la revendication 1, dans lequel les touches alphabétiques comprennent, au moins en partie, une touche « F » et une touche « J ».
     
    5. Appareil de la revendication 4, dans lequel les touches alphabétiques comprennent, au moins en partie, une rangée alphabétique de milieu de clavier (103) de touches alphabétiques.
     
    6. Appareil de la revendication 5, dans lequel les touches alphabétiques représentent l'alphabet complet.
     
    7. Appareil de la revendication 1, dans lequel les dessus de touche (300) sont pourvus d'éléments tactiles bilatéralement asymétriques.
     
    8. Appareil de la revendication 7, dans lequel les éléments tactiles bilatéralement asymétriques comprennent des indentations (302) dans une surface supérieure (301) des dessus de touche.
     
    9. Appareil de la revendication 7, dans lequel des caractères alphabétiques correspondant à chacune des touches alphabétiques sont disposés à l'intérieur des éléments tactiles bilatéralement asymétriques.
     
    10. Appareil de la revendication 9, dans lequel les caractères alphabétiques correspondant à chacune des touches alphabétiques sont disposés au centre à l'intérieur des éléments tactiles bilatéralement asymétriques.
     
    11. Appareil de la revendication 10, dans lequel certains des dessus de touche pour les touches alphabétiques sont disposés sur le clavier en rotation de 180 degrés par rapport à d'autres des dessus de touche pour les touches alphabétiques.
     
    12. Appareil de la revendication 7, comprenant en outre :

    un émetteur-récepteur sans fil (703) ;

    un circuit de commande (701) couplé de manière fonctionnelle à l'émetteur-récepteur sans fil et au clavier.


     
    13. Procédé comprenant les étapes consistant à :

    fournir (201) une pluralité de dessus de touche (300) pour des touches alphabétiques (101), ayant chacun un facteur de forme commun comportant un élément tactile excentrique formé sur une surface supérieure (301) de celui-ci ;

    former (202) un clavier (500, 702) en disposant une pluralité de touches alphabétiques (101) dans un motif de grille espacé de manière régulière les unes par rapport aux autres, où les touches alphabétiques ont lesdits dessus de touches qui sont disposés dans l'une différente de deux orientations différentes dans des rangées adjacentes, de sorte que les éléments tactiles excentriques soient décalés verticalement les uns des autres dans une configuration incurvée pour correspondre essentiellement à des positions de doigts en dactylographie standard.


     
    14. Procédé de la revendication 13, dans lequel la disposition de la pluralité de dessus de touche dans l'une différente de deux orientations différentes dans des rangées adjacentes comprend la disposition de certains de la pluralité de dessus de touche dans une première orientation et certains de la pluralité de dessus de touche dans une deuxième orientation qui est tournée de 180 degrés par rapport à la première orientation.
     
    15. Procédé de la revendication 13, dans lequel la disposition de la pluralité de dessus de touche dans l'une différente de deux orientations différentes dans des rangées adjacentes comprend la disposition de tous les dessus de touche qui sont dans des première et troisième rangées (102 et 104) dans la première orientation et tous les dessus de touche dans une deuxième rangée (103) dans la deuxième orientation.
     




    Drawing














    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description