Patent ID: 7269601

Claim:
An information delivery system for delivering media data such as audio and video to a client computer comprising: a media storing memory that stores the media data and meta-information; a sequence information storing unit that stores sequence information for specifying an address at beginning of the media data; a media control request generator that generates a media control request, which requests delivery of the media data, includes a scene identifier, a current scene being viewed and a relative time distance indicating a time from a scene currently being viewed to a time of requested media data, wherein the scene identifier includes a playtime which specifies an elapsed time of viewing media; a searcher executes the media control request in the sequence information using a sum of a current scene number and a value of the relative time distance; a retriever that receives the media control request to verify the sequence information based on the received media control request and retrieves the media data starting from a prescribed point according to a result of the verification of the sequence information, wherein the verification determines whether a playtime exists or not in the sequence information, the retriever further retrieving the media data based on an address linked to a detected text data, and wherein the meta-information, which links text data describing a digest of a scene to an address of the scene, is included in the sequence information, a scene keyword, which specifies a requested scene to view, is included in the media control request; and a deliverer that delivers the retrieved media data to the client computer.