Patent ID: 7406702

Claim:
A broadcasting method comprising the steps of: broadcasting encrypted contents from a broadcasting side wherein said encrypted contents are encrypted by said broadcasting side and said encrypted contents are stored into a storage medium at a receiving side; and broadcasting a play command with a decryption key at the time after broadcasting said encrypted contents to cause the encrypted contents to be played, wherein the time at which the play command and decryption key are broadcast is predetermined by said broadcasting side and said decryption key is stored into a memory at a receiving side; wherein, upon receiving said play command, the receiving side causes said encrypted contents to be retrieved from said storage medium and said decrypted using said decryption key to produce decrypted contents, and wherein the decrypted contents are outputted and said decryption key is deleted from said memory when output of said decrypted content is finished, wherein said encrypted contents are broadcasted with a first identifier identifying said encrypted contents, and wherein said play command broadcasted with a second identifier identifying said first identifier to indicate that said encrypted contents, broadcast with the first identifier, are to be retrieved from said storage medium for output.