Nippon Telegraph and Telephone Corporation

Ntt Docomo, Inc.

Ryo Kitahara

Takahito Kawanishi

Osamu Yoshioka

Hiroko Muto

Takao Nakamura

Susumu Yamamoto

Katsuhiro Noguchi

Atushi Katayama

Takashi Miyatake

Hisato Miyachi

Minami Ishii

Kota Fujimura

An objective of the present invention is to make a search for illegal (illegitimate) content more efficient. The illegitimate content relates to content posted by an unauthorized user without a legitimate ownership of the content. An illegitimate content search device according to the present invention comprises a phishing content sensing part for, using a profile of candidate content being potentially illegitimate content, sensing, from among the candidate content, phishing content being non-illegitimate content for guiding a user's viewing.

Illegal content search device, illegal content search method, and program

An objective of the present invention is to make a search for illegal (illegitimate) content more efficient. The illegitimate content relates to content posted by an unauthorized user without a legitimate ownership of the content. An illegitimate content search device according to the present invention comprises: a query generation dictionary storage part for storing a query generation dictionary for generating a search query used in searching for illegitimate content; a query generation dictionary creation part for extracting, from a title of illegitimate content, associated wording being associated with wording included in a title of legitimate content, and registering the extracted associated wording in the query generation dictionary for generating the search query used in searching for the illegitimate content; and a search query generation part for generating the search query using the associated wording registered in the query generation dictionary.

The present disclosure relates to a search for illegal (illegitimate) content In particular, the present disclosure provides the search in an efficient manner by excluding pieces of presumed illegitimate content from the candidates of illegitimate content for comparing with legitimate content. The illegitimate content comprises content posted by an unauthorized user without a legitimate ownership of the content. An illegitimate content sensing device according to the present disclosure comprises a presumed illegitimate content deletion part for, on the basis of a profile of candidate illegitimate content, identifying pieces of the candidate illegitimate content having a profile which is within a degree of identicalness to a profile of previously identified illegitimate content as presumed illegitimate content.

An objective of the present invention is to achieve greater efficiency in searches for illegal (illegitimate) content. The illegitimate content relates to content posted by an unauthorized user without a legitimate ownership of the content. An illegitimate content search device according to the present invention comprises: a content profile acquisition part for acquiring a profile including a posting history of illegitimate content posted by a user having posted candidate content being potentially illegitimate content; and a matching priority calculation part for calculating, on the basis of the profile, the priority of the candidate content with regard to determining whether a plurality of pieces of content is illegitimate content, and elevating the priority of the illegitimate content with a history of having posted the illegitimate content higher than if content without the history.

In a mobile communication system, a radio device is configured to transmit notification information transmitted from a distribution server, to a mobile station, by use of broadcast communication. The distribution serverincludes a key transmitter unitconfigured to transmit a public key of the distribution serverto the mobile station UE; the radio device RNC, Node B includes a notification information transmitter unitA configured to transmit, to the mobile station UE, the notification information transmitted from the distribution server; and the mobile station UE includes an authentication unitconfigured to authenticate the validity of the received notification information in reference to an electronic signature for the notification information.

Mobile communication system, mobile communication method, distribution server, radio network controller and mobile station

In a mobile communication system, the radio device RNC, Node B includes: a creation unitconfigured to create, on the basis of the notification information received from the distribution server, simplified information indicating content of the notification information, and detailed information indicating content of the notification information with a greater amount of information than that of the simplified information; a simplified information transmitter unitconfigured to transmit the simplified information to the mobile station by use of a control channel for starting the broadcast communication; and a detailed information transmitter unitconfigured to transmit the detailed information to the mobile station by use of a traffic channel for broadcast communication, and the mobile station UE includes: a display unitconfigured to display the received detailed information, after displaying the received simplified information.

Mobile communication system, mobile communication method, radio network controller, radio base station and mobile station

A digital watermark embedding method of the present invention includes: a step of sequentially obtaining each frame image of the moving image data and frame display time; a step of generating a watermark pattern using watermark information, the frame display time and watermark pattern switching information; a step of superimposing the watermark pattern onto the frame image, and combining watermark embedded frame images obtained by sequentially repeating the processes to generate watermark embedded moving image data. A digital watermark detection method includes a step of sequentially obtaining a frame image; a step of generating a difference image between the currently obtained frame image and a previously obtained frame image; and a step of performing digital watermark detection from the difference image to output digital watermark detection status, and when digital watermark detection process is continued, obtaining a new frame again to repeat the above processes.

Digital watermark padding method, digital watermark padding device, digital watermark detecting method, digital watermark detecting device, and program

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Yokohama, Japan

Ryo Kitahara