RADIO TELEPHONE

Abstract: The invention relates to a radio telephone, comprising a microprocessor cicuitry (22), a memory (23, 26), an alphanumeric display (7), a keypad (8), and a reading device (4) in which a removable memory (5) can be inserted to enable reading under control of the microprocessor circuitry, the memory containing the individual data of a radio subscriber. According to the invention said removable memory (5) also contains versions of the texts to be shown on the alphanumeric display in the languages selected by the user.

Description: Radio telephone Field of the Invention The invention relates to a radio telephone or the like, comprising a microprocessor circuitry, a memory, an alphanumeric display, a keypad, and a reading device in which a removable memory can be inserted to enable reading under control of the microprocessor circuitry, the memory containing the individual data of a radio subscriber. Background r of the Invention A user interface of radio telephones and corre¬ sponding radio devices typically comprises a keypad and an alphanumeric display. Via the keypad the user may dial telephone numbers, select different modes of opera¬ tion and even write messages to be transmitted further. On the display are generally shown the current contents of the keypad buffer and different information relating to the operation of the phone, such as instructions to the user and data on the calls. In order to minimize the number of radio telephone types manufactured, stored and sold, it would be advisable for all the radio telephones to display identical texts. However, in order that the use might be facilitated and possibly also because of the different requirements set by different systems, the texts should be displayed in the user's own language, wherefore at least in different countries different texts or texts in different languages are needed. German Offenlegungsschrift 3,838,677 discloses a radio telephone in which the loss of important data caused by the user is prevented during the operation of the radio telephone by storing the data in a removable memory card, in which are also stored the identification data of the radio subscriber. These important data in- elude e.g. the last call and the mode of function of the phone. The subscriber data can be transferred from one radio telephone of a system to another similar phone in the same system by means of a memory card, which enables shared use and even renting of telephones. However, since radio telephones are provided with texts on the display in a specified language, the user may have to use a telephone in which the texts on the display are in a foreign language. In the PCT application W091/12698 a radio device is provided with a removable memory module, the information stored in the module defining the call functions available. In addition, a SIM card contains data which renders the phone to operate in a desired manner, e.g. in a specified language. Texts in different languages are permanently stored in the memory of the radio device; the data in the memory module only gives instructions as to which language to use. The problem is the high price of the memory capacity needed, where- fore the number of languages is limited. Disclosure of the Invention The object of the invention is a radio tele¬ phone or the like in which different texts on the dis- play or texts in different languages are simple to use. This is achieved with a radio telephone of the type described in the introduction, the radio telephone according to the invention being characterised in that the removable memory also contains versions of the texts to be shown on the alphanumeric display in the languages selected by the user. In the invention all the texts on the display are stored in a removable memory, such as a memory card or module, from which they can be read to the alpha- numeric display of the radio telephone. Due to the invention the texts on the display of any radio tele¬ phone can be easily shown in a language selected by the user simply by inserting a removable memory, in which the texts are in the language selected, in the reading device of the radio telephone. In the same way the texts shown to the user on the display may be changed e.g. according to the country, radio telephone system or even the user. In one embodiment of the invention, alpha- numerically displayable texts are stored in the memory of a radio telephone in one language, which is used as a default language when a removable memory is not in the reading device. The microprocessor circuitry fetches a translated version for the default language text from the removable memory and displays the translation on the alphanumeric display. In another embodiment of the invention essen¬ tially the entire user interface software of the radio telephone is stored in a removable memory and the remaining portion of the operating system of the radio telephone is stored in the memory of the radio tele¬ phone. The microprocessor circuitry loads the user interface software from a removable memory to the memory of the radio telephone when the radio telephone is switched on or the removable memory is inserted in the reading device. This makes it easy to change the entire user interface, i.e. texts, keypad functions, alarms, etc. , in such a way as to be more convenient to the user. It is much simpler to change a removable memory to another than it is to change program memory circuits within a radio telephone, and it does not require any special skills. Brief Description of the Drawings In the following the invention will be de¬ scribed by means of embodiments with reference to the attached drawing, wherein Fig. 1 shows a perspective view of a radio telephone device according to the invention, Fig. 2 shows a more detailed view of the display 7 of Fig. 1, and Fig. 3 shows a schematic block diagram of the radio telephone device of Fig. 1. Detailed Description of the Invention The invention may be applied to almost any kind of conventional radio telephone device, e.g. a portable mobile phone or a car phone to which is added the ability of using a removable memory. Fig. 1 shows, by way of an example, a radio telephone device of the invention which can be mounted e.g. in a vehicle, the device comprising a transceiver section 1 having a user interface formed by a display 7 and a keypad 8. To the radio telephone device may also be connected e.g. a separate microphone 3 and a separate loudspeaker 2. Further, a line 9 connects a separate reading device 4 for a memory card or module to the device, the reading device having an input slot 6, through which a removable memory 5, such as a memory card or module 5, can be inserted in the reading device 4 in such a way that it can later be easily removed or detached. An example for a portable mobile phone to which the invention can be applied is the portable mobile phone of German Offen- legungsschrift 3,838,677, said mobile phone including a reading device for a memory card. Fig. 2 shows an enlarged, more detailed view of a possible embodiment of the display 7, which is advantageously a liquid crystal display. Reference number 71 indicates a line of indicators at the upper edge of the display 7, in which different indicator fields FCN, ALPHA, HG, MFT, MENU, MUTE and MC indicate different modes of the radio telephone. For example, field MC indicates that the memory card 5 is in use. There are further separate indicator fields 74, 75, 76 and 77 at the lower edge of the display. The actual alphanumeric display comprises two subdisplays 72 and 73. The upper subdisplay 72 comprises one alphanumeric line of display, displaying the characters or numbers keyed in via the keypad 8 (i.e. the contents of the display buffer) and being e.g. 20 characters long. The lower subdisplay 73 comprises two alphanumeric lines of display, displaying different messages concerning the operation of the radio telephone and being e.g. 24 characters long. Examples for such messages include the type of the call received, the A subscriber number, different state messages and instructions to the user. The invention may be applied e.g. to changing the language and type of the texts shown on the subdisplay 73 of the display 7 in accordance with the user's wishes. Fig. 2 shows a schematic block diagram of the radio telephone of Fig. 1, wherein a block 21 repres¬ ents, in general, baseband and radio sections of a radio telephone, such as a transceiver, a synthesizer, signal¬ ling circuits, interface circuits and baseband signal processing circuits. A separate microphone 3, a separate loudspeaker 2 and a separate antenna ANT may be connect¬ ed to the block 21. Block 22 represents, in general, a micro¬ processor circuitry controlling the baseband and radio sections, a bus 24 or the like interconnecting the block with a read-write memory 23 used as a work memory, a non-volatile read-only memory 26 used as a program memory, and a display 7 and a keypad 8 forming a user interface. All data, control, signalling etc. connec¬ tions between the radio and baseband sections 21 and the microprocessor circuitry 22 are represented generally by reference number 25. According to the invention, a reading device 4 is connected to the microprocessor circuitry 22 by the line 9, the microprocessor circuitry 22 being capable of reading the contents of the removable memory 5 inserted in the reading device by means of said reading device. The type of the reading device is generally determined by the removable memory used. In the simplest form, the reading device 4 may here be a connecting means, which provides an electric connection between the memory circuits contained in the memory card or module 5. The removable memory 5 may be practically any removable memory suited for the purpose. In a preferred embodiment of the invention an 8 Kbyte SRAM module BS8E1, a 16 Kbyte SRAM module BS16D1-B or a 64 Kbyte SRAM module CSC-064K-SM-04-M56 is used, depending on the storage capacity needed, all of these modules being manufactured by Fujisoku. A suitable reading device 4 is of the type CR40 and manufactured by Telenokia. In a preferred embodiment of the invention all the texts to be displayed on the display 7 are stored in the removable memory 5 in the language selected by the user. The user interface software is then stored in the program memory 26 of the radio telephone. The texts shown on the alphanumeric display 7 may be stored in the program memory 26 in one language (e.g. English), which is used as a default language when the removable memory 5 is not in the reading device 4. The microprocessor circuitry 22 fetches a translated version for the default language text from the removable memory 5 and displays the translation on the alphanumeric display 7 when the removable memory 5 is in the reading devi " : 4. The text displayed can then be changed by changing „he type of the removable memory 5. In yet another embodiment of the invention essentially the entire user interface software of a radio telephone is stored in a removable memory 5 and the remaining portion of the operating system of the radio telephone is stored in the program memory 26 of the radio telephone. The microprocessor circuitry 22 loads the user interface software from a removable memory 5 to the work memory 23 of the radio telephone when the radio telephone is switched on or the removable memory 5 is inserted in the reading device 4. This makes it easy to change the entire user interface, i.e. texts, keypad functions, alarms, etc., in such a way as to be more convenient to the user. The attached drawing and the description thereof are to be understood only as illustrating the invention. The details of the radio device according to the invention may vary within the scope of the attached claims.

Claims: Claims 1. A radio telephone or the like, comprising a microprocessor circuitry (22), a memory (23, 26), an alphanumeric display (7), a keypad (8), and a reading device (4) in which a removable memory (5) can be inserted to enable reading under control of the micro¬ processor circuitry, the memory containing the indi¬ vidual data of a radio subscriber, c h a r a c t e r i s e d in that said removable memory (5) also contains versions of the texts to be shown on the alphanumeric display (7) in the languages selected by the user. 2. A radio telephone according to claim 1, c h a r a c t e r i s e d in that alphanumerically displayable texts are stored in the memory (23, 26) of a radio telephone in one language, which is used as a default language when a removable memory (5) is not in the reading device (4), and that the microprocessor circuitry (22) fetches a translated version for the default language text from the removable memory (5) and displays the translation on the alphanumeric display when the removable memory (5) is in the reading device (4). 3. A radio telephone according to claim 1, c h a r a c t e r i s e d in that essentially the entire user interface software of the radio telephone is stored in a removable memory (5) and the remaining portion of the operating system of the radio telephone is stored in the memory (23, 26) of the radio telephone. 4. A radio telephone according to claim 3, c h a r a c t e r i s e d in that the microprocessor circuitry (22) loads the user interface software from the removable memory (5) to the memory (23, 26) of the radio telephone when the radio telephone is switched on or the removable memory ( 5) is inserted in the reading device (4) . 5. A radio telephone according to any one of claims 1 to 4, c h a r a c t e r i s e d in that said removable memory (5) is a memory card and that said reading device (4) is a card reading device. 6. A radio telephone according to any of claims 1 to 4, c h a r a c t e r i s e d in that said removable memory (5) contains an electronic memory circuit and that said reading device (4) is a connecting means for electrically connecting a memory circuit to a radio telephone.

Inventors: KOVANEN JARI, KOVANEN, JARI
Applicants: NOKIA TELECOMMUNICATIONS OY
Application year: 1993
Main classification: H04M1
IPC codes: H04B1, H04Q7