Pioneer Corporation

Techexperts Incorporation

Nobuo Tarui

Yoshiya Nonaka

Noritaka Nii

Akihiro Denda

Ryoji Sugino

Yoshio Sekine

Masashi Aoyama

Yuji Sakamoto

Hirobumi Iwaji

Takeshi Mutoh

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.

Electronic device, control method thereof, security program and others

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.

Memory control device, in-car device, memory control method, and computer product for managing data in response to various power states

Growing community of inventors

Kawagoe, Japan

Nobuo Tarui