Additional-information detection processing apparatus and method, content playback processing apparatus and method, and computer program

An additional-information detection processing apparatus for detecting additional information from content having the additional information embedded therein in advance to detect whether or not the content is illegal, said additional-information detection processing apparatus comprises:

• means for receiving the content;
• first detecting means for detecting from the content a content identifier for identifying the content;
• second detecting means for detecting from the content a user identifier for identifying a user of the content;
• and
• reporting means for determining that the content is illegal when only one of the content identifier and the user identifier is detected, and for reporting the illegality of the content.

A content playback processing apparatus for playing back content, comprising:

• additional-information detecting means for receiving content having additional information superimposed thereon and for detecting a user identifier which is contained in the additional information;
• a memory for storing a user identifier;
• comparing and verifying means for comparing and verifying the user identifier detected from the content with the user identifier stored in said memory;
• and
• playback control means for playing back the content on the condition that said comparing and verifying means determines that the user identifier detected from the content and the user identifier stored in said memory are verified with each other.

An additional-information detection processing method for detecting additional information from content having the additional information superimposed thereon to detect whether or not the content is illegal, said additional-information detection processing method comprising:

• an additional-information detecting step of receiving the content and detecting first additional information, which includes content routing information;
• and
• a data verifying step of comparing and verifying the detected first additional information with content routing information of the content, which is recorded in a delivery record table,
• wherein the illegality of the content is detected based on a data verification result obtained in said data verifying step.

An additional-information detection processing method for detecting additional information from content having the additional information embedded therein in advance to detect whether or not the content is illegal, said additional-information detection processing method comprising:

• a content receiving step of receiving the content;
• a first detecting step of detecting from the content a content identifier for identifying the content;
• a second detecting step of detecting from the content a user identifier for identifying a user of the content;
• and
• a reporting step of determining that the content is illegal when only one of the content identifier and the user identifier is detected, and reporting the illegality of the content.

A content playback processing method for playing back content, comprising:

• an additional-information detecting step of receiving content having additional information superimposed thereon and detecting a user identifier which is contained in the additional information;
• a comparing and verifying step of comparing and verifying the user identifier detected from the content with a user identifier read from a memory;
• and
• a playback control step of playing back the content on the condition that it is determined in said comparing and verifying step that the user identifier detected from the content and the user identifier read from the memory are verified with each other.

A computer program for executing a process for detecting additional information from content having the additional information embedded therein in advance to detect whether or not the content is illegal, said computer program comprising:

• a content receiving step of receiving the content;
• a first detecting step of detecting from the content a content identifier for identifying the content;
• a second detecting step of detecting from the content a user identifier for identifying a user of the content;
• and
• a reporting step of determining that the content is illegal when only one of the content identifier and the user identifier is detected, and reporting the illegality of the content.

A computer program for executing a content playback process, comprising:

• an additional-information detecting step of receiving content having additional information superimposed thereon and detecting a user identifier which is contained in the additional information;
• a comparing and verifying step of comparing and verifying the user identifier detected from the content with a user identifier read from a memory;
• and
• a playback control step of playing back the content on the condition that it is determined in said comparing and verifying step that the user identifier detected from the content and the user identifier read from the memory are verified with each other.