Patent ID: 7813249
Filing Date: 2010-10-12
Classification: G11B,H04N

Abstract:
1. An information recording apparatus, comprising: an acquisition unit operable to acquire first copy control information representative of whether recording of input contents onto a recording medium is permitted; a production unit operable to produce, based on the first copy control information, control information representing whether copying of the contents recorded on the recording medium is permitted, whether the contents are in an encrypted state regardless of whether the copying of the contents is permitted, and whether encryption of the contents should be compelled; wherein the control information is capable of representing three states permitting free copying of the contents recorded on the recording medium; wherein, when the control information represents that free copying of the contents recorded on the recording medium is permitted, the control information is capable of representing (i) not compelling encryption and the contents are not encrypted, (ii) not compelling encryption and the contents are encrypted; and (iii) compelling encryption and the contents are encrypted; wherein the control information consists of two bits in a packet header of an MPEG (motion picture experts group) transport stream containing the contents; and a recording unit operable to record the control information onto the recording medium together with the contents; wherein the MPEG transport stream is comprised of a plurality of aligned units, each aligned unit is comprised of thirty-two source packets, each source packet is comprised of the packet header and a transport packet containing a portion of the contents, the packet header further contains an arrival time stamp of 30 bits indicating the time at which the contents arrive at a decoder.