Hitachi, Ltd.

Satoe Okayasu

Takashi Shinoda

Hisashi Toyoshima

Atsushi Kikuta

Kazuya Uemura

Eiichi Kamata

Chikako Tsuchiyama

Hiroshi Asakai

Authenticity output method and apparatus for outputting a verification result of authenticity based on digital data. An authenticity output method constructed by the steps of: registering information which is outputted together with the verification result of the authenticity based on the digital data into a personal table for verification; verifying the authenticity based on the digital data; and when the verification result of the authenticity based on the digital data is outputted, reading out the information registered in the personal table for verification and outputting it in accordance with the verification result. An apparatus for realizing those functions.

Authenticity output method and its apparatus, and processing program

A communication system includes a community management server used by a communication manager and a participant's terminal used by a community participant participating in communication. The community management server manages multimedia data that has data about the community participant embedded therein, an element symbolizing the community participant, a data content display control part and a participant personal identification authentication part. The participant's terminal includes generation part for generating card-like information as a communication unit. When a plurality of community participants executes communication by using the cards to which the multimedia data are put, they can execute information display of personal information of the community participants, authentication of personal identification, and retrieval/edition of a speech content by using information embedded in the multimedia data.

Method of information display and communication system using the method

A browserof a mark user clientobtains Web pagefrom a mark provider serverand displays it. Then control is transferred to a mark reference programwhen a mark is detected, and the program extracts digital watermark information from a mark image. This digital watermark information comprises referred data, and an action definition that includes an action class and an index of the referred data as a parameter. The mark reference programrefers to this action definition, refers to required data through the index included in the action definition, and then performs processing defined by the action class.

Method of referring to digital watermark information embedded in a mark image

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Saitama, Japan

Satoe Okayasu