Information processing device, information processing method, and computer program

An information processing apparatus for transmitting content data in response to a content transmission request from a client, characterized by comprising:

• a data transmitting and receiving unit executing data transmission and reception processing with the client via a network;
• a content storage unit storing content;
• a content management unit managing content stored in the content storage unit;
• a metadata storage unit storing metadata as content attribute information;
• a property information acquisition unit extracting property information, which is individual information of the metadata, from the metadata storage unit;
• and
• a transmission data generation unit generating data to be transmitted to the client, based on the property information acquired by the property information acquisition unit;
• wherein the content management unit executes content management by:
• defining an individual content as an object and a folder storing a plurality of contents as an object;
• defining a class as information indicating category classification of the object, to make a plurality of the classes have a hierarchical structure;
• setting the class indicating the category classification to each of the objects;
• and
• managing a plurality of objects by using a content directory having a hierarchical structure,
• the metadata storage unit stores, with respect to each of the objects:
• a plurality of property information including identification information of the object;
• class information indicating the category classification of the object;
• information relating to the hierarchical structure of the content directory to which the object is belonged,
• the property information acquisition unit extracts the property information of an object included in a designated class in response to a property information acquisition request with class designation from the client received by the data transmitting and receiving unit;
• the transmission data generation unit generates transmission data including:
• the property information extracted by the property information acquisition unit;
• and
• information of an allowable value settable as data of the extracted property information, and
• the data transmitting and receiving unit transmits the transmission data generated by the transmission data generation unit to the client.

An information processing method for executing content data transmission processing in response to a content transmission request from a client, characterized by comprising:

• an object management step of managing a plurality of objects by using a content directory having a hierarchical structure, by defining an individual content as an object and a folder composed of a plurality of contents as an object, defining a class as information indicating category classification of the object to make a plurality of the classes have a hierarchal structure, and setting the defined class to each of the objects;
• an object attribute data management step of managing, with respect to the property information which is individual information included metadata as attribute information of the object, a plurality pieces of the property information including identification information of the object, class information indicating category classification of the object, and information related to the hierarchical structure of the content directory to which the object is belonged;
• a property information acquisition request reception step of receiving a property information acquisition request with class designation from the client;
• a property information acquisition step of extracting property information of individual objects included in a designated class;
• a transmission data generation step of generating transmission data including the extracted property information and information of an allowable value settable as data of the extracted property information;
• and
• a data transmission step of transmitting the generated transmission data to the client.

An information processing apparatus for performing acquisition processing of content information, characterized by comprising:

• a data transmitting and receiving unit executing data transmission and reception processing with a server owning the content information;
• a control unit generating display information to be displayed on an output unit based on the content information received from the server via the data transmitting and receiving unit;
• and
• a display unit outputting and displaying the display information generated by the control unit;
• wherein the control unit is configured to execute the generation processing of the display information in which data editing information is able to be identified for each piece of property information as component of the content information received from the server.

An information processing apparatus for executing content information transmission processing, characterized by comprising:

• a storage unit storing contents and metadata as content attribute information;
• a data transmitting and receiving unit executing data transmission and reception processing with a client as a content information request apparatus;
• and
• a control unit extracting the metadata from the storage unit in response to receipt of a content information acquisition request from the client, and generating content information to be transmitted to the client based on property information as component of the metadata;
• wherein the control unit has a structure in which the content information including data mode information by which processing capability in a device on the client side is able to be judged is generated, as data mode information of the content data which is able be transmitted to the client, and the generated content information is transmitted via the data transmitting and receiving unit.

An information processing method for executing content information transmission processing, characterized by comprising:

• a content information acquisition request receiving step of receiving a content information acquisition request from a client;
• a content information generating step of generating content information to be transmitted to the client based on property information which is components of metadata, by extracting the metadata as content attribution information from a storage unit;
• and
• a content information transmitting step of transmitting the generated content information to the client via a data transmitting and receiving unit;
• wherein if the content information acquisition request from the client is a content information acquisition request with class designation set as content classification, the content information generating step is a step in which property information common to a designated class is extracted, and the content information defining data editing information allowed by each piece of data of the extracted property information for each property is generated.

An information processing method for executing acquisition processing of content information, characterized by comprising:

• a display information generating step of generating display information displayed on an output unit based on content information received from a server via a data transmitting and receiving unit;
• and
• a displaying step of outputting and displaying the display information;
• wherein the display information generating step executes the generation processing of the display information in which data editing information is able to be identified for each piece of property information as component of the content information received from the server.

An information processing method for executing content information transmission processing, characterized by comprising:

• a content information acquisition request receiving step of receiving a content information acquisition request from a client;
• a content information generating step of generating content information to be transmitted to the client based on property information which is components of metadata, by extracting the metadata as content attribution information from a storage unit;
• and
• a content information transmitting step of transmitting the generated content information to the client via a data transmitting and receiving unit;
• wherein if the content information acquisition request from the client is a content information acquisition request with class designation set as content classification, the content information generating step is a step in which property information common to a designated class is extracted, and based on the extracted property information, the content information including data mode information by which processing capability in a device on the client side is able to be judged is generated as data mode information of the content data which is able to be transmitted to the client.

A computer program for executing content information transmission processing, characterized by comprising:

• a content information acquisition request receiving step of receiving a content information acquisition request from a client;
• a content information generating step of generating content information to be transmitted to the client based on property information which is components of metadata, by extracting the metadata as content attribution information from a storage unit;
• and
• a content information transmitting step of transmitting the generated content information to the client via a data transmitting and receiving unit;
• wherein if the content information acquisition request from the client is a content information acquisition request with class designation set as content classification, the content information generating step is a step in which property information common to a designated class is extracted, and the content information defining data editing information allowed by each piece of data of the extracted property information for each property is generated.

A computer program for executing acquisition processing of content information, characterized by comprising:

• a display information generating step of generating display information displayed on an output unit based on content information received from a server via a data transmitting and receiving unit;
• and
• a displaying step of outputting and displaying the display information;
• wherein the display information generating step includes a step of executing generation processing of the display information in which data editing information is able to be identified for each piece of property information included in the content information received from the server, as component of the content information.

A computer program for executing content information transmission processing, characterized by comprising:

• a content information acquisition request receiving step of receiving a content information acquisition request from a client;
• a content information generating step of generating content information to be transmitted to the client based on property information which is components of metadata, by extracting the metadata as content attribution information from a storage unit;
• and
• a content information transmitting step of transmitting the generated content information to the client via a data transmitting and receiving unit;
• wherein if the content information acquisition request from the client is a content information acquisition request with class designation set as content classification, the content information generating step is a step in which property information common to a designated class is extracted, and based on the extracted property information, the content information including data mode information by which processing capability in a device on the client side is able to be judged is generated, as data mode information of the content data which is able to be transmitted to the client.