| 摘要 |
In a recording system having an accounting function, in recording a copy target information signal onto a recording medium, an identification signal for identifying the contents of the information signal is saved in a recording machine, and at the time of copy, the saved identification signal and the identification signal of an information signal to be newly recorded are compared with each other to discriminate whether or not copy and recording of the same information signal was carried out by the recording machine in the past, thereby discriminating whether or not recording should be permitted on condition that accounting is carried out, on the basis of the result of comparison. If the information signal was copied in the past, copy and recording is permitted on condition that accounting is carried out, thereby preventing unlimited first-generation copy.
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