Kabushiki Kaisha Toshiba

Kayaba Industry Company, Ltd.

Takashi Kokubo

Noriyuki Hirayama

Hiroshi Isozaki

Koji Kanazawa

Taku Kato

Hiroaki Kobayashi

Hidehiko Kuroda

Hideki Ohkita

Takehiko Okuyama

Naruhiko Mukai

Hiroyuki Chaki

Kazunobu Konda

Masataka Hayashi

Jun Okazaki

Ken Matsushita

Yoshizo Watanabe

Masahiko Kuroki

Kunihiko Yokoyama

Teturo Aikawa

Tomoe Kawakami

According to one embodiment, an electronic device includes a content transmitter. The content transmitter is configured to output a content item including first data and second data to one transmission path, by applying a first copyright protection system to copyright protection of the first data and applying a second copyright protection system to copyright protection of the second data. The first copyright protection system involves encryption of data to be copyright-protected. The second copyright protection system involves no encryption of data to be copyright-protected.

Electronic device and method of transmitting content item

According to one embodiment, a transmitting method transmits a start request for an authentication and key exchange from at least one of receivers to the transmitter, performs an authentication and key exchange for at least one of a first key common to the receivers and a second key peculiar to the at least one of the receivers, and encrypts the content by using a key shared by the transmitter and the at least one of the receivers to transmit the encrypted content to the at least one of the receivers.

Transmitter, receiver, and transmitting method

A power steering driving deviceincludes an input shaftprovided with a serrationand connected to an input mechanismlinked to a steering handle, an output shaftprovided with a serrationand connected to an output mechanismlinked to a vehicle wheel, and a torsion barthat connects the input shaftand the output shaftcoaxially. The serrationof the input shaftand the serrationof the output shaftare formed such that a ratio between the respective numbers of teeth thereof is a decimal, and to specify a relative rotation position of the input shaftand the output shaftrelative to the input mechanismand the output mechanism, a tooth on the serrationof the input shaftand a tooth on the serrationof the output shafthaving a relative position deviation angle about an identical central axis which is equal to or smaller than an allowable value are selected as reference teeth.

Driving device for power steering

An information processing apparatus has an authentication & key exchange unit, a contents receiver, a contents decryption unit and a contents confirmation request unit. The authentication & key exchange unit performs authentication & key exchange processing by using a given protocol with the communication apparatus and generates a first key shared with the communication apparatus. The contents receiver receives encrypted contents obtained by encrypting the contents with a second key generated by using the first key and the key information, and the key information attached to the encrypted contents. The contents decryption unit decrypts the encrypted contents by using the first key and the key information. The contents confirmation request unit instructs the communication apparatus to transmit or confirm the key information held by the communication apparatus, when the contents decryption unit decrypts the contents based on the second key firstly generated by using the first key.

Information processing apparatus and information processing method

An information processing apparatus has an authentication/key exchange unit, a round trip time measuring unit, a common key transmitter, a contents key transmitter and a contents transmitter. The round trip time measuring unit sends a round trip time measuring request generated to the communication apparatus through the first communication connection to measure the round trip time, and check whether the measured round trip time is within a predetermined time and whether a transmitting source of the round trip request response is the communication apparatus sharing the first key. The common key transmitter encrypts a second key used for contents transmission by using the first key and transmits the encrypted second key through the first communication connection when the round trip time measuring unit succeeds in the checking. The contents transmitter encrypts the contents requested by the communication apparatus by using the second key and sends the encrypted contents to the communication apparatus through the second communication connection.

Information processing apparatus, information processing method, and information processing program

A recording and reproducing apparatus includes a file recorder, an interface, and controller which, upon receipt of content file with copy control information, records the content file in the recorder by adding thereto identification information M requesting transfer upon confirmation that a round-trip response time to a destination is not longer than a predetermined time, so that upon receipt of an instruction for transfer of the content file to an external device on the network, the controller determines whether the external device has a function of measuring and determining the round-trip response time to the destination, and in the case where the external device has function of measuring and determining the round-trip response time to the destination, transfers the content file to storage area of the external device, after measuring the round-trip response time and confirming that the measurement is not longer than predetermined time.

Recording and reproducing apparatus and file transfer method

A relay apparatus according to an embodiment of this invention includes an ID acquisition unit configured to acquire the unique ID of a partner device connected to a predetermined network, and a control unit which controls various processes on the basis of the unique ID of the partner device, which is acquired by the ID acquisition unit.

Relay apparatus and network relay method

In accordance with the present invention, a network relay device includes a first interface which is connected to a first network and sends contents information encrypted by key information, a second interface which is connected to a second network and sends the contents information to a receiving a network relay device, and a notification section which detects that the key information is changed and notifies a key change notification signal to the receiving network relay device.

Network relay device, communication device and network relay method

An oil detecting system for detecting a leakage oil by optical fluorescence measurement means even in the presence of external fluorescent light, for example, from parts and equipments of a vehicle and a plant comprises an irradiation apparatus for irradiating a light including an absorption wavelength of an oil to be detected and exciting molecules of the oil to make the oil fluoresce, a wavelength selection apparatus operatively connected to the irradiation apparatus and adapted to select a fluorescence wavelength of the leakage oil fluoresced by the irradiation apparatus, and an observation apparatus for detecting the fluorescence of the leakage oil and selecting only a period of observing fluorescing of the leakage oil over substantially the same time period that the leakage oil fluoresces light. A processing apparatus may be further provided so as to be operatively connected to the observation apparatus and adapted to process an image or a signal from the observation apparatus.

Growing community of inventors

Ome, Japan

Takashi Kokubo