Patent ID: 8688587

Claim:
A content recording apparatus for recording content that is received from an external source and attached with copy control information, comprising: at least two recording devices; a stream data output unit configured to judge whether the copy control information indicates a predetermined status or not, and upon judging that the copy control information indicates the predetermined status, to output streams of data in parallel, each of the streams of data separately representing the content and corresponding to the respective recording devices; an encrypting unit having encrypting subunits corresponding one-to-one to the recording devices, each of the encrypting subunits being configured to encrypt, with a different encryption key, a different one of the streams of data received from the stream data output unit; a history information storage unit configured to store history information including recording histories each identifying content recorded by each of the recording devices; and a receiving unit configured, after detecting operation for detachment of a recording medium from any one of the recording devices, to search through the history information to judge whether another recording medium, which is attached to the content recording apparatus and is other than the recording medium to be detached, stores content identical to any content stored in the recording medium to be detached, wherein each of the recording devices is configured to record a corresponding one of the streams of data encrypted by a corresponding one of the encrypting subunits, wherein each of recorded streams of data is encrypted using an encryption key being different from each other, and wherein the receiving unit is configured, if the receiving unit judges affirmatively, to record prohibition information to the history information, so that the identical content stored in said another recording medium is prohibited from being played or edited.