Patent ID: 7436959

Claim:
A data recording device comprising: a deciphering processing unit configured to decipher and/or decompress input encrypted and/or compressed data by way of deciphering processing; a detection unit configured to detect whether or not watermark signals are included in said input encrypted and/or compressed data without decryption and/or decompression processing; a data processing unit supplied at least with data from said deciphering processing for applying signal processing for recording to the supplied data; a recording unit configured to record output data from said processing unit on a recording medium; and a controller configured to control the recording, when said detection unit detects that said watermark signals are included, based on the detected watermark signals wherein, detection of watermark signals indicate that the input encrypted and/or compressed data is to be directly recorded on said recording medium without a decryption or decompression processing, and said controller changes over said data processing unit in a controlled manner to supply the input encrypted and/or compressed data directly to said recording processing unit.