Patent ID: 8731192
Filing Date: 2014-05-20
Classification: G11B,H04N

Abstract:
1. A reproducing device for reproducing content data for content recorded on a recording medium, the content including a plurality of pieces of original partial data, and the content data including a plurality of original packets, at least one transformed packet and at least one restoration-use packet, the at least one transformed packet corresponding to one of the plurality of pieces of original partial data, each of the plurality of original packets corresponding to any one of the plurality of pieces of original partial data other than the one piece of original partial data corresponding to the least one transformed packet, the at least one transformed packet including a transformed part instead of a target part which is a part of the one piece of the original partial data corresponding thereto, the transformed part being generated by replacement of the target part with another piece of data, each of the plurality of original packets including a corresponding one of the plurality of pieces of original partial data as-is, the reproducing device comprising: a processor; and a non-transitory memory having stored thereon executable instructions, which when executed by the processor cause the reproducing device to perform: wherein the in-packet position indicates a position of the transformed part in the at least one transformed packet, and the restoration-use parameter is the target part, wherein the piece of restoration information further includes bit position information indicating a bit position in device unique information for uniquely identifying the reproducing device, wherein when the restoration instruction flag indicates that the restoration processing is performed depending on the device unique information, the restoration processing is performed if bit data in the device unique information corresponding to the bit position indicated by the bit position information has a predetermined value, and wherein the device unique information is stored in the non-transitory memory.