Abstract: An electronic device, a control method thereof and a security program are provided which are capable of preventing or suppressing the theft of the electronic device. The electronic device comprises mounting means for loading a portable recording medium and encrypted information write means for encrypting predetermined information using an encryption key unique to the electronic device and writing the encrypted information in the recording medium. The electronic device further comprises encrypted information read means for reading the encrypted information recorded in the recording medium in the case where the recording medium is loaded in the mounting means, decryption execution means for executing the decryption of the encrypted information using the encryption key, and control means for setting the electronic device in usable mode in the case where the encrypted information is decrypted by the decryption execution means.

Abstract: Data is stored in a non-volatile memory such as a flash memory. The non-volatile memory has two memory areas. When power of a device is turned on, data in the two memory areas are compared to determine which memory area includes old data, and the old data is erased. When the power is turned off, a control setting of the device used immediately before the power is turned off is stored as new data in the memory area from which the old data is erased. When the power is applied again, the new data is read, and the control setting is restored in the device.

Abstract: A processor 300 of a navigation device 200 operates a response voice analyzer of a process status setting unit to acquire a destination-responding voice collected by a microphone 230. Then, the processor 300 operates the state setting controller of the process state setting unit to identify a user of a vehicle based on the destination-responding voice and to set a navigation processor and a music reproducing unit so as to perform processes in accordance with the identified user.

Abstract: There are provided a musical composition reproducing apparatus and a musical composition reproducing method by which musical composition data can be reproduced without boring a user. The musical composition reproducing apparatus acquires a musical composition feature value indicating respective feature of a plurality of musical composition data recorded on a recording means, judges according to the musical composition feature value of musical composition thus acquired whether or not each musical composition data has a predetermined musical mood, and registers the musical compositions judged to have the musical mood in a reproduction list corresponding to the musical mood while arranging the musical composition data in a predetermined reproducing order.

Abstract: An electronic device, a control method thereof and a security program are provided which are capable of preventing or suppressing the theft of the electronic device. The electronic device comprises mounting means for loading a portable recording medium and encrypted information write means for encrypting predetermined information using an encryption key unique to the electronic device and writing the encrypted information in the recording medium. The electronic device further comprises encrypted information read means for reading the encrypted information recorded in the recording medium in the case where the recording medium is loaded in the mounting means, decryption execution means for executing the decryption of the encrypted information using the encryption key, and control means for setting the electronic device in usable mode in the case where the encrypted information is decrypted by the decryption execution means.

Abstract: Data is stored in a non-volatile memory such as a flash memory. The non-volatile memory has two memory areas. When power of a device is turned on, data in the two memory areas are compared to determine which memory area includes old data, and the old data is erased. When the power is turned off, a control setting of the device used immediately before the power is turned off is stored as new data in the memory area from which the old data is erased. When the power is applied again, the new data is read, and the control setting is restored in the device.

Abstract: An information-recording apparatus that records program information to a recording device, is provided with: a control device which controls the operation of the apparatus; and a voltage-monitoring device which monitors the power-supply voltage supplied to the apparatus; and wherein the control device switches to a low-power-consumption mode for lowering the power consumption of the apparatus when recording the program information, when the power-supply voltage becomes less than a predetermined first threshold value.