Abstract: A mobile terminal device includes biometric information detecting means for detecting biometric information; encryption key generating means for generating an encryption key on the basis of the biometric information in registration; encrypting means for encrypting a predetermined personal identification number with the encryption key to generate a biometric encrypted personal identification number in the registration; encrypted personal-identification-number storing means for storing the biometric encrypted personal identification number in the registration; decryption key generating means for generating a decryption key on the basis of the detected biometric information in verification; decrypting means for decrypting the biometric encrypted personal identification number with the decryption key to reproduce the personal identification number in the verification; and personal identification number verifying means for comparing the reproduced personal identification number with the stored biometric encrypted

Abstract: A subscriber identity module (SIM) for subscriber identification configured so as to be detachably loaded on a mobile communication terminal device has a application section for storing an externally downloaded application program, a processing section (or a SAT function section) for executing this application program, a storage section for storing file administrative description, file description, and file data, and file administration section for administering these information and data. The processing section, after the downloading of the application program, executes the downloaded application program to control the file administration section. Consequently, access to the data stored in the subscriber identity module is prevented, thereby preventing the third party to access the data stored in the subscriber identity module of the lost or stolen mobile communication terminal.

Abstract: A mobile terminal device includes biometric information detecting means for detecting biometric information; encryption key generating means for generating an encryption key on the basis of the biometric information in registration; encrypting means for encrypting a predetermined personal identification number with the encryption key to generate a biometric encrypted personal identification number in the registration; encrypted personal-identification-number storing means for storing the biometric encrypted personal identification number in the registration; decryption key generating means for generating a decryption key on the basis of the detected biometric information in verification; decrypting means for decrypting the biometric encrypted personal identification number with the decryption key to reproduce the personal identification number in the verification; and personal identification number verifying means for comparing the reproduced personal identification number with the stored biometric encrypted

Abstract: A subscriber identity module (SIM) for subscriber identification configured so as to be detachably loaded on a mobile communication terminal device has a application section for storing an externally downloaded application program, a processing section (or a SAT function section) for executing this application program, a storage section for storing file administrative description, file description, and file data, and file administration section for administering these information and data. The processing section, after the downloading of the application program, executes the downloaded application program to control the file administration section. Consequently, access to the data stored in the subscriber identity module is prevented, thereby preventing the third party to access the data stored in the subscriber identity module of the lost or stolen mobile communication terminal.

Abstract: An information signal processing function of a telephone communication terminal can be limited taking regulations applied to the other party or an input of the other party into consideration. A base station that repeats a radio wave of a call originating portable telephone terminal transmits a country code thereof to a telephone terminal. Based on a region identification code such as a state code (international number) or a country code included in information received upon origination of the call, the called terminal refers to a status table in a ROM thereof to specify presence or absence of limitations to recording of conversation during communication applied to a state or a region in which the call originating terminal is used. In accordance with the specified limitation contents, use of the conversation recording function during communication is controlled such that a warning sound generator transmits warning sound or a voice decoding section disables recording of the conversation.

Abstract: A CPU and an enciphering circuit are provided in a memory card with a construction of a memory stick. Data which is inputted and outputted is enciphered and stored in a flash memory. A command system for accessing the memory stick has a public command system and a non-public command system for management. In file data which is stored in the flash memory, an access restriction, copy guard information, and encipherment and a personal identification number at the time of access can be selectively set for every file data. In those file data, a data file including hidden file data manages processes. An access right is set into the file data and accesses for reading and writing the file data are restricted in accordance with the access right. Since the data is enciphered and stored in the flash memory, the security of the data to be stored is enhanced.

Abstract: Mobile radio terminal equipment such as a mobile phone with a clock function in which, if a time difference is detected, the time indication is automatically changed to enable the user to recognize the time difference easily. When a user of mobile radio terminal equipment moves to a place where there is a time difference from the basic time for him/her, the time difference is detected using the area code sent from a base station or the caller number from the other party's terminal equipment. After that, the time display is automatically changed to the mode where both Home time (usual clock time) and Local time (time which reflects the time difference) are displayed simultaneously.

Abstract: A scheme is disclosed wherein use of an information signal processing function of a telephone communication terminal can be limited taking regulations applied to the other party of communication or a will of the other party of communication into consideration. A base station which repeats a radio wave of a call originating portable telephone terminal transmits a country code thereof to an object call terminating telephone terminal. Based on a region identification code such as a state code (international number) or a country code included in information received upon termination of the call, the call terminating terminal refers to a status table prepared in a ROM thereof to specify presence or absence of limitations to recording of conversation during communication applied to a state or a region in which the call originating terminal is used and, where such restrictions are applied, contents of the limitations.

Abstract: A portable terminal includes an input operation section for being operated by a user of the portable terminal to input an operation input, a storage section for storing information to be displayed on a display screen, and a display control section for reading out information to be used to display on the display screen from the storage section in response to the operation input from the input operation section and controlling the display screen to display corresponding to the operation input based on the read out information. When loading of an external storage medium into the portable terminal is detected by a loading/unloading detection section for detecting loading/unloading of an external storage medium, authentication of the external storage medium is performed based on authentication information read out from the external storage medium. When the authentication results in success, data stored in the loaded external storage medium is read out.

Abstract: A portable telephone for communicating with a base station connected to a telephone network has a communication control unit for controlling communication through the base station, a memory for storing control information for each area in which the telephone can be operated, together with a code of each area, and wherein the communication control unit includes a discriminator for discriminating the area code included in a control signal which is transmitted from the base station. The control information for the area of the area code which the discriminator has discriminated is read from the memory so that the communication control unit can make the corresponding communication control in accordance with the control information.

Abstract: An IC card loading detecting apparatus utilizing an input/output terminal portion of an IC card which houses therein a central processing unit (CPU) has a ground contact (6e) and a detection sensor contact (7) provided on an interface portion (6) of a terminal equipment (4). The detection sensor contact is brought in contact with a ground terminal (2e) of an input/output terminal portion (2) of an IC card (1) after the ground contact is brought in contact with the ground terminal when the IC card is inserted into the equipment and is disconnected from the ground terminal before the ground contact is disconnected from the ground terminal when said IC card is ejected from the equipment.

Abstract: An error correcting apparatus including a circuit for detecting error correcting modes of incoming digital information, a generator for generating a first set of syndromes for a first error correcting mode when the incoming digital information is detected as the first error correcting mode, a generator for generating a second set of syndromes for a second error correcting mode when the incoming digital information is detected as the second error correcting mode, a generator for generating quasi-syndromes for the second error correcting mode by adding an additional syndrome to the syndromes for the first error correcting mode when the incoming digital information is detected as the first error correcting mode, and an error correction circuit for applying an error correcting process to the incoming digital information based on the generated syndromes for the second error correcting mode in spite of the error correcting modes of the incoming digital information.

Abstract: A level indicating system adapted to provide an indication of the peak-level or the volume unit level of an input signal. The system is comprised of an amplifier to receive the signal; a first changeable time constant circuit; a second changeable time constant circuit coupled to the first time constant circuit; an indicator connected to the second time constant circuit; and a control circuit for changing the respective time constants of the first and second time constant circuits. The indicator selectively provides an indication of the peak-level of the signal or the volume unit of the signal depending upon the particular time constants of the time constant circuit.