Patent ID: 7647343

Claim:
An information presentation system comprising: a playback device; a management device; and a terminal device, wherein said terminal device is a different entity from said playback device, said playback device plays back a content, obtains (i) a content identifier that identifies the content having been played back by said playback device, and (ii) rental information that shows whether or not the content is a rental content, and transmits the content identifier and the rental information to the management device, and the management device including: a storage unit operable to store a content identifier that identifies a content having been played back in a past by the playback device in association with rental information that shows whether or not the content is a rental content; a receiving unit operable to receive, from the playback device, (i) a new content identifier that identifies a new content having newly been played back by the playback device and (ii) new rental information that shows whether or not the new content is a rental content; an update unit operable to (i) perform an update on the stored rental information so as to show that the content is not the rental content when (a) the received new content identifier and the stored content identifier identify a same content, and (b) the stored rental information shows that the content is the rental content, and the received new rental information shows that the new content is not the rental content, (ii) perform no update on the stored rental information regardless of whether or not the received new rental information shows that the new content is the rental content when (a) the received new content identifier and the stored content identifier identify the same content, and (b) the stored rental information shows that the content is not the rental content, and (iii) store the new content identifier and the new rental information to the storage unit, when the received new content identifier and the stored content identifier identify different contents from each other; a generation unit operable to generate presentation information using the stored content identifier and the stored rental information in response to a request from the terminal device; and an output unit operable to output the presentation information to the terminal device, and the terminal device makes the request to the management device to generate the presentation information, obtains the presentation information from said management device, and presents the presentation information.