Patent ID: 8566958
Filing Date: 2013-10-22
Classification: H04N

Abstract:
1. A method for authorizing a contents play right, comprising: transmitting, by a recording device, to a contents provider, a message for requesting a recording right to record a plurality of different contents and a play right to play the plurality of different contents, wherein the message comprises information indicating the recording device desiring to be authorized to record the plurality of different contents on a recording medium and information indicating a plurality of play devices desiring to be authorized to play the plurality of different contents from the recording medium; receiving, by the recording device, information as to a recording right to record the plurality of different contents, and information as to a play right to play only a part among all the plurality of different contents for which the play right is requested by the recording device, from the contents provider, wherein the information as to the play right includes information indicating the plurality of play devices as play authorized devices, and the information as to the recording right and the information as to the play right to play only the part among all of the plurality of different contents for which the play right is requested by the recording device are transmitted from the contents provider in response to the transmitted message for requesting the recording right to record the plurality of different contents and the play right to play the plurality of different contents; checking that the recording device is a trusted device and obtaining an encryption key by the recording device; determining, by the recording device, that the recording right is integral using the obtained encryption key; determining, by the recording device, whether the recording device corresponds to a recording authorized device with reference to the information as to the recording right; if it is determined that the recording device corresponds to the recording authorized device, determining, by the recording device, whether the plurality of different contents correspond to recording authorized contents with reference to the information as to the recording right; if it is determined that the plurality of different contents correspond to the recording authorized contents, recording an encrypted key on a recording medium; recording the plurality of different contents encrypted using the encryption key, on the recording medium; and recording the information as to the play right to play only the part of the contents on the recording medium, wherein the recorded information as to the play right further comprises information as to play authorized contents of only the part of the plurality of different contents that are recorded separately on the recording medium, the play authorized contents being authorized to be played by the play authorized devices, and wherein information as to a play right is not received for contents which the play devices are not authorized to play.