Kabushiki Kaisha Toshiba

Kirin Beer Kabushiki Kaisha

Kabushikikaisha Rnai

Masahiro Hattori

Junichi Inagaki

Tomoyuki Yamada

Yasuyuki Nanba

A database server stores encrypted vector data in which each of a plurality of elements is encrypted by encryption maintaining semi-homomorphism between calculation before encryption and calculation after encryption. The database server receives an obfuscated query (N-randomized query) from a terminal device, performs calculation for each of a plurality of segments of vectors of the obfuscated query with a segment of the encrypted vector data, and transmits the calculation to the terminal device in reply. The terminal device may acquire a result of decryption calculation transmitted in reply by a decryption device.

Terminal device, database server, and calculation system

A digital protective relay apparatus for protecting a power system comprises an accident determination section for determining an accident in the power system, which receives a voltage and a current of the power system from the power system to determine an accident in the power system using the voltage and the current, outputs a determination signal indicating the presence/absence of an accident in accordance with a result of the accident determination, and outputs a first trip signal upon detecting an accident in the power system in accordance with the accident determination, a protection sequence section for receiving the determination signal from the accident determination section to determine necessity of a trip output by performing predetermined sequence processing using the determination signal, and outputting a second trip signal upon obtaining a determination result indicating that a trip command is to be output, and a trip generator for generating, when both of the first and second trip signals are output, a third trip signal for opening a circuit breaker provided to protect the power system.

Digital protective relay apparatus

A container rotating-transporting device for transporting a plurality of containers while rotating same, which comprises a transport device for transporting the containers straightly, a plurality of container stands each provided rotatably on the transport device to hold a container thereon and having a roller or pulley and a rotation imparting member for rotating each container stand when the roller or pulley contacts the rotation imparting member. This device is used for a container inspecting device.

Growing community of inventors

Tokyo, Japan

Masahiro Hattori