Patent ID: 7395245
Filing Date: 2008-07-01
Classification: G06F

Abstract:
1. A content usage management system comprising: a first terminal device for sending a license request comprising terminal capability information indicating a capability of said first terminal device with regard to content usage control, said first terminal device including a secure clock, and the terminal capability information including information indicating that said first terminal device includes a secure clock; a second terminal device for sending a license request comprising terminal capability information indicating a capability of said second terminal device with regard to content usage control, said second terminal device not including a secure clock, and the terminal capability information including information indicating that said second terminal device does not include a secure clock; and a server device for managing a usage rule of a user, receiving the terminal capability information from the first and second terminal devices, generating a first license ticket including part or all of the usage rule for processing content based on the terminal capability information sent from said first terminal device, sending the first license ticket to said first terminal device, generating a second license ticket including: part or all of the usage rule for processing content; a content identification; and a license ticket status flag set to indicate that the license information must be consumed upon receipt without being written on a recording medium based on the terminal capability information sent from said second terminal device, which indicates that the second terminal device does not include a secure clock, and sending the second license ticket to said second terminal device; wherein said first terminal device controls content usage in accordance with the usage rule included in the first license ticket; and said second terminal device determines the status of the license ticket status flag in the second license ticket and controls content usage, in accordance with the usage rule included in the second license ticket, thereby immediately executing the content identified by the content identification in response to the license ticket status flag being set to indicate that the license ticket must be consumed upon receipt without being written on a recording medium.