Patent ID: 9014541
Filing Date: 2015-04-21
Classification: H04N

Abstract:
1. A content playback control method, comprising: storing in a memory, information describing: decoding encrypted content using the content key to generate decoded content, only when the usage condition is met; determining, when an instructed special playback of the decoded content is performed and the usage condition specifies the special sections of the decoded content described in the information stored in the memory, whether the special sections of the decoded content described in the information stored in the memory include a point at which the instructed special playback is performed; and controlling the instructed special playback for the decoded content, when the special sections include the point at which the instructed special playback is performed, and when the usage condition specifies that the playback is performed based on the playback mode described in the information stored in the memory, and a playback mode of the instructed special playback corresponds to one of the playback mode described in the information stored in the memory.