The present invention relates to equipment for mobile telecommunications, and more particularly to a mobile telephone having a display, a rotator input device comprising a rotatable element and capable of generating commands for browsing and selecting objects on said display, a wireless telecommunication interface, a processing device and a text-handling software application which is executable by said processing device.
Mobile telephones are becoming smaller and smaller. At some point the keyboard of a mobile telephone, typically a 12-button (alpha-)numeric keyboard commonly known as ITU-T keyboard, will become useless since it becomes too difficult for a user to press keys that are extremely small. Thus, the ITU-T keyboard may become a limiting factor which restricts the design of mobile telephones.
On the other hand, in modern mobile telephones the ITU-T keyboard plays several important roles and acts not only as a dialing keypad for manual entry of telephone numbers to call, but also as an alpha-numeric keyboard for text entry, a game control for arcade games, etc. As regards text entry, each key in the ITU-T keyboard often relates to several characters. A single key may, for instance, relate to the characters “a”, “b” and “c”. Pressing the key once produces the character “a”, pressing the key twice within a short period of time produces the character “b”, and pressing the key three times within a short period of time produces the character “c”. Pressing the button twice slightly more slowly produces two “a”:s. It is rather slow to use a keyboard in such a manner; therefore, various methods for facilitating text entry with an ITU-T keyboard have been developed. An example of such a method, wherein an object is to identify a word entered by a user, is disclosed in U.S. Pat. No. 5,818,437 and is generally known as T9.
Mobile telephones often have a graphical user interface. To facilitate operation of the graphical user interface, mobile telephones often have special navigation key(s), in addition to or integrated with the ITU-T keyboard, such as arrow keys or a combined multi-way navigation key. However, such additional navigation keys add on to the total size of the keyboard, thereby further limiting the freedom to design.
U.S. Pat. No. 6,097,964 discloses a mobile telephone 1 that in addition to an ITU-T keyboard 7 has a roller 10, which replaces traditional navigation key(s) and allows the user to operate the user interface by rotating and depressing the roller to issue commands for browsing and selecting objects in the user interface. The ITU-T keyboard 7 is still used for other purposes like manual dialing and text entry.
In view of the above, an objective of the invention is to solve or at least reduce the problems discussed above. In more particular, a purpose of the invention is to provide a user interface for a mobile telephone that allows a smaller design with fewer elements for manual input, but that still allows the user to perform two important actions of manual input, namely manual dialing of telephone numbers to call as well as text entry.
Generally, the above objectives and purposes are achieved by a mobile telephone according to the attached independent patent claim.
One aspect of the invention is a mobile telephone having a display; a rotator input device comprising a rotatable element and capable of generating commands for browsing and selecting objects on said display; a wireless telecommunication interface to a mobile telecommunications network; a processing device coupled to said display, said rotator input device and said wireless telecommunication interface; and a text-handling software application which is executable by said processing device. The processing device is configured, in a first operating mode, to provide first user input by way of said rotator input device, said first user input including a number sequence representative of a desired telephone number which is to be reached over said mobile telecommunications network, and to use said first user input when establishing a telephone call connection through said wireless telecommunication interface. Moreover, the processing device is configured, in a second operating mode, to provide second user input by way of said rotator input device, said second user input including a character sequence representative of a desired text, and to forward said second user input to said text-handling software application. No numeric or alphanumeric character keyboard is involved in neither of said first and second operating modes.
Hence, according to the invention, the mobile telephone may be designed without a traditional numeric or alphanumeric character keyboard, such as a 12-key ITU-T keyboard, and yet provide manual input options like manual dialing of telephone numbers to call as well as text entry. This has important advantages, since it allows greater freedom when designing the mobile telephone, facilitates miniaturization of the mobile telephone and permits realization with fewer components for manual input, i.e. a potential cost benefit. Furthermore, the invention provides for user input in an intuitive manner which makes space-efficient use of the available display area.
Advantageously, the processing device is configured to control the user interface of the mobile telephone essentially only based on user input made by way of the rotator input device. Controlling the user interface in this manner may include actions such as browsing menus and selecting menu items. For instance, the processing device may be configured to control, based on user input made by way of the rotator input device, at least one of the following user interface actions: entering the first operating mode, exiting the first operating mode, entering the second operating mode and exiting the second operating mode.
In one embodiment, the processing device is configured, in said first operating mode, to provide said first user input by displaying numbers on said display and receiving commands from said rotator input device for browsing said numbers and for selecting, in successive order, individual numbers that constitute said number sequence. Moreover, in said second operating mode, the processing device is configured to provide said second user input by displaying characters on said display and receiving commands from said rotator input device for browsing said characters and for selecting, in successive order, individual characters that constitute said character sequence.
In one embodiment, the mobile telephone has a front housing surface, said rotatable element of said rotator input device being rotatable in a plane substantially parallel to said front housing surface and being depressible so as to allow generation of said commands for browsing and selecting. The rotatable element of said rotator input device may be depressible in a direction substantially perpendicular to said front housing surface. Moreover, the rotatable element of said rotator input device may be tiltably depressible at a plurality of positions along its periphery so as to allow generation of different commands for browsing and selecting for different ones of said plurality of positions. Such a tiltably depressible rotatable element thus provides for many more selection options than for instance a roller as in aforesaid U.S. Pat. No. 6,097,964, where the roller is depressible in one direction only—downwardly towards the housing.
In one embodiment, the rotator input device has, in addition to said rotatable element, at least one depressible element, thereby allowing generation of said commands for browsing and selecting by rotation of said rotatable element and depression of said depressible element. The rotatable element of said rotator input device may comprise a ring with a center opening, wherein said at least one depressible element includes a depressible center key which is positioned in said center opening. The provision of such a center key will simplify certain operations such as marking text, since the center key may be conveniently depressed while simultaneously rotating the rotatable element. The depressible center key may be a four-way or five-way navigation key. Moreover, the at least one depressible element may comprise functional keys or soft keys disposed adjacently to said rotatable element.
In one embodiment, the rotator input device has a dynamic or selectable resolution for angular movement of said rotatable element, so that a given amount of angular movement will result in a corresponding amount of browsing or scrolling on said display which depends on an adjustable resolution setting. This resolution setting may be adjustable by at least one of the following: a user of the mobile telephone, an operating system in the mobile telephone, or a software application in the mobile telephone.
One embodiment further comprises a text prediction engine, wherein the processing device is configured, in said second operating mode, to display on said display a group of predicted characters that are available for browsing and selecting by way of said rotator input device. The text prediction engine may be configured to decide said group of predicted characters in response to a recently made user input and in accordance with a predefined inference logic. Advantageously, said recently made user input is a partial word; said predefined inference logic involves matching said partial word with a database of known and/or common words to predict most likely words that said partial word is part of; and said group of predicted characters, that is displayed on said display, is formed by a respective next character, following said partial word, in respective ones of said predicted most likely words.
In one embodiment, the processing device is configured in said second operating mode to display on said display, in addition to said characters, at least one control symbol that is available for browsing and selecting by way of said rotator input device, and wherein said at least one control symbol represents a user interface action that is performed upon selection of said control symbol. The at least one control symbol may represent at least one user interface action among the following: activating text prediction, deactivating text prediction, selecting a character set and selecting a cursor movement mode.
In one embodiment, the processing device is adapted to provide navigation within graphical data, which requires a larger presentation area than is available on said display, by: accepting a first rotational input made by way of said rotator input device as a desired pan direction for a sub area within said graphical data; accepting a second rotational input made by way of said rotator input device as a desired scrolling distance for said sub area in the selected pan direction within said graphical data; and presenting said sub area on said display.
Aforesaid telephone call connection may include at least one of the following: a voice call connection, a facsimile transmission connection and a data communication connection.
Aforesaid text-handling software application may include at least one of the following: a messaging application, a phonebook application, a calendar application, a notepad application, an Internet browser application, a WWW browser application, a WAP browser application, a contacts application, a camera application, an image recordal application, a video recordal application, an organizer application, a video game application, a calculator application, a voice memo application, an alarm clock application, a word processing application, a code memory application, a music player application, a media streaming application, and a control panel application, or any other application which uses at least one field for text input.
The mobile telephone may be adapted for use in GSM, UMTS, D-AMPS or CDMA2000, or another commercially available mobile telecommunications network.
Other aspects, objectives, features and advantages of the present invention will appear from the following detailed disclosure, from the attached dependent claims as well as from the drawings.
The present invention will now be described in more detail, reference being made to the enclosed drawings, in which:
a is a schematic perspective view of the mobile telephone of
b is a schematic illustration of the rotator input device shown in
a and 7b are block diagrams that illustrate the mobile telephone according to the present invention in the first operating mode and in the second operating mode, respectively.
A mobile telecommunications system in which the present invention may be applied will first be described with reference to
In the telecommunications system of
In the illustrated example, the mobile telephone 100 may be used for speech communication with users of other devices. Hence, speech may be communicated with a user of a stationary telephone 132 through a public switched telephone network (PSTN) 130 and the mobile telecommunications network 110, and with a user of another mobile terminal 100′ which is connected to the mobile telecommunications network 110 over a wireless communication link 102′.
The mobile telecommunications network 110 is operatively connected to a wide area network 120, which may be Internet or a part thereof. Thus, the mobile telephone 100 may access a computer 122 connected to the wide area network 120 in accordance with specified protocols (such as TCP, IP and HTTP) and appropriate application software (such as a WAP or WWW browser, an email or SMS application, etc) in the mobile telephone 100.
The system illustrated in
a illustrates the mobile telephone 100 of
The mobile telephone 100 also has a rotator input device 250 for manual input, one embodiment of which is shown in more detail in
In another embodiment the rotatable element 251 may be depressible in a direction substantially perpendicular to the front housing surface 220. In such an embodiment, the depressive ability of the rotatable element 251 may replace the center key 252, so that no such center key is included in the rotator input device 250. Still other embodiments of the rotator input device 250 will be described later with reference to
The embodiment of
A first operating mode, for manual dialling of a telephone number to call, will now be described with reference to
A second operating mode, for text entry into the text-handling software application 740, will now be described with reference to
Reference is now made to
As seen in
The control symbols 630 may relate also to other control functions than the ones referred to above; one example is a control symbol for cursor movement mode. Upon entry into the cursor movement mode, the symbols 600 are no longer scrollable and selectable in the selection window 530. Instead, clockwise movement of the rotatable element 251 will move the cursor 520 forwardly in the entered text, whereas counter-clockwise movement of the rotatable element 251 will move the cursor 520 backwardly. When the cursor has been repositioned to the desired position, the cursor movement mode may be exited by depressing the center key 252, wherein the second operating mode (text entry mode) will be resumed. Also, other application-specific (control) commands such as SEND, SAVE, CLEAR, etc, could be added to the control symbols 630. A detailed description is given in U.S. patent application Ser. No. 10/434,055, from which priority is claimed and which is incorporated herein by reference in its entirety.
In the embodiment shown in
Thus, the content of the group of predicted characters 620 is updated each time a new user input has been received (i.e. once a new character has been selected by the rotator input device 250/720). The text prediction engine applies the inference logic to decide which characters to include in the group of predicted characters 620 at each time. The decision is based on the already made text input—preferably the most recent part(s) of the already made text input, such as the immediately preceding character(s) in the input.
In one embodiment, the inference logic is based on bigram statistics for the current language, wherein the most recent input character (e.g. “a” in
In one embodiment, the text prediction engine may be configured to be activated only once a very first character has been entered in a new text entry session (e.g. so that not a predicted “T” but the first character “A” of the current full character set 610 is centered and focused in the selection window 530 when an empty SMS message is about to be filled with text).
The rotator input device 250/720 may be used for many other purposes than the first and second operating modes described above. One example is a password entry mode, wherein the available symbols 600 that are scrollable and selectable in the selection window 530 may vary between applications. In some cases the available symbols may be limited to numbers (e.g. in a SIM access control mode where a PIN code is required), and in other cases both letters and numbers may be allowed (e.g. in a WAP login mode). One example that further shows the intuitiveness of using a rotator is the possibility of using the rotator for code inputs like a number wheel on a safe with number scrolling (either linear or circular) with possibly added clicking sounds. Another example is a date/time entry mode, for instance in a calendar application or an alarm clock application, wherein the available symbols may include “0123456789”, “:” and “/”. Still other examples involve multimedia players, where the rotator input device 250/720 may be used for browsing and selecting in a list of media files, for controlling volume settings, etc.
In one embodiment, the rotator input device is used also for navigation in graphical data such as images presented on the display 240/710 by an application such as a WAP or WWW browser, an image editor or a picture viewer. More particularly, whenever such graphical data requires a presentation area which is too large to fit on the display 240/710, the following navigation method may be used. Initially a sub area of the required presentation area will be shown on the display at a start position, such as the uppermost/leftmost part of the required presentation area, the size of the sub area preferably corresponding to the size of the available presentation area of the display. To navigate within the required presentation area, by rotation of the rotatable element 251, the user will select a desired pan direction for the sub area to be presented. Then, again by rotation of the rotatable element 251, the user will select a desired scrolling distance, in the selected direction within the required presentation area, for the sub area to be presented. In response, the selected sub area of the required presentation area, located at the position determined by the selected direction and distance as displaced from the start position, will be presented on the display. A detailed description is given in PCT Application No. PCT/IB03/03926, from which priority is claimed and which is incorporated herein by reference in its entirety.
The text prediction engine may be included in said set of MMI drivers 334 or may be provided as separate software executable by the controller 300. In other embodiments it may be realised as partly or entirely in hardware, for instance in the form of an ASIC (“Application-Specific Integrated Circuit”).
The software also includes various modules, protocol stacks, drivers, etc., which are commonly designated as 330 and which provide communication services (such as transport, network and connectivity) for an RF interface 306, a Bluetooth interface 308 and an IrDA interface 310. The RF interface 306 may realise the wireless telecommunication interface 730 and comprises an internal or external antenna as well as appropriate radio circuitry for establishing and maintaining a wireless link to a base station (e.g. link 102 to base station 104 in
The apparatus 100 also has a SIM card 304 and an associated reader. As is commonly known, the SIM card 304 comprises a processor as well as local work and data memory.
The text entry according to aforesaid second operating mode may be received and used for various purposes in a variety of applications, including aforesaid messaging and phonebook applications 340, 342, as well as for instance a notes application, a contacts application, an Internet browser application, a WWW browser application, a WAP browser application, a camera application, an image recordal application, a video recordal application, an organizer application, a video game application, a calculator application, a voice memo application, an alarm clock application, a word processing application, a code memory application, a music player application, a media streaming application, and a control panel application, or any other application which uses at least one field for text, character or symbol input.
As seen in
When the motion detector element 874 utilizes electro-magnetic, magnetic, electrical, acoustic or optical coupling, a transmitter for transmitting an incident signal onto the motion detector element 874 and a receiver for receiving the reflected incident signal from the motion detector element 874 are incorporated in the converter 876.
When the motion detector element 874 utilizes mechanical coupling, the communicating means 878 may be constituted by a mechanical lever coupling to an indented area of the motion detector element 874 so that angular motion of the rotatable element causes the lever to vibrate.
The motion detector element 874 is supported by a bearing element 880 enabling rotation of the interlocked ring-shaped rotatable element 864 and motion detector element 874. The bearing element 880 comprises an opening 882 for receiving the navigation key 866. In this embodiment, the navigation key 866 is not supported by the bearing element 880 and thus is not rotatable.
The rotator input device 860 further comprises a switching assembly designated in entirety by reference numeral 884. The switching assembly 884 comprises a first sheet incorporating a first set of domes or switching elements 886 for communicating with the rotatable element 864 when depressed, and a second set of domes or switching elements 888 for communicating with the navigation key 866 when depressed. The domes 886 and 888 comprise an upper and a lower surface layer separated by a space, which during alteration detectably changes electrical characteristics. The change in electrical characteristics is identified by corresponding detectors 890 on the support 862. The changes detected by the detectors 890 are communicated to a translator 892 through communication means 894. The communication means 894 and the translator 892 may be provided and integrated directly on the support 862, which may be a printed circuit board (PCB).
Thus, in summary, the rotator input device 860 may detect angular motions of the rotatable element 864 in clockwise and counter-clockwise directions by way of the converter 876, and in response generate commands for browsing objects on the display 710 in cooperation with the processing device 700. Moreover, the rotator input device 860 may detect depressions of the rotatable element 864 at its periphery by way of the domes 886, the detectors 890 and the translator 892, and in response generate commands for browsing and/or selecting objects on the display 710 in cooperation with the processing device 700. Furthermore, the rotator input device 860 may detect depressions of the navigation key 866 in the center of the rotatable element 864 by way of the domes 888, the detectors 890 and the translator 892, and in response generate commands for browsing and/or selecting objects on the display 710 in cooperation with the processing device 700.
Hence, in the disclosed embodiment, the depressible rotatable element 864 serves as a normal rotator for angular or “continuous” browsing/scrolling, and as a four-way navigation key for “discrete” browsing/scrolling/selection in four orthogonal directions. Conveniently, the four different depressible positions (“north, east, south, west”) at the periphery of the rotatable element 864 may be assigned different commands for browsing and selecting. Thus, virtually all kinds of input can be made through the depressible rotatable element 864, wherein the user will not have to move his fingers much at all and wherein the input will be faster and more intuitive. The navigation key 866 serves as a five-way key for “discrete” browsing/scrolling/selection in four orthogonal directions (by depressing the navigation key 866 at its periphery) as well as for pure selecting actions by depressing the navigation key 866 at its center.
In an alternative embodiment, the embodiment of
In still an alternative embodiment, the rotator input device 860 has a dynamic or selectable resolution for the angular (rotational) movement of the rotatable element 864, in the sense that a given amount of angular movement will be interpreted differently, as regards the corresponding amount of browsing/scrolling it shall be held to represent, by the processing device 700 or the converter 876 depending on an adjustable resolution setting, which may be updated by the user, the operating system 320 or any of the software applications 340-346. In this way, the resolution may vary between applications (such as a high resolution in a text-handling application and a lower resolution in an arcade game), between users with different preferences (such as a disabled person that may prefer a low resolution, whereas a skilled and non-handicapped person may prefer a higher resolution), or between different scopes or modes within one application. A detailed description is given in U.S. patent application Ser. No. 10/449,036, from which priority is claimed and which is incorporated herein by reference in its entirety.
The invention has mainly been described above with reference to a few embodiments. However, as is readily appreciated by a person skilled in the art, other embodiments than the ones disclosed above are equally possible within the scope of the invention, as defined by the appended patent claims.
Number | Date | Country | Kind |
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10/434,055 | May 2003 | US | national |
10/449,036 | May 2003 | US | national |
10/458,401 | Jun 2003 | US | national |
PCT/IB03/03926 | Sep 2003 | WO | international |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/IB04/00962 | 3/30/2004 | WO | 11/8/2005 |