| 摘要 |
PURPOSE:To record only a necessary information signal under control by a transmission side by detecting that an identifying signal is its own by an identifying signal detecting signal and starting a recording operation at this time. CONSTITUTION:After transmission of software n by a transmission system 100 is finished, in order to transmit next software (n+1), an identifying signal 173 different from an identifying signal 172 for identifying a user requesting this software (n+1) is transmitted. When the identifying signal detecting circuit 54 of a recording device 300 detects the identifying signal 173, a recording finishing signal 180 is outputted to a system control circuit 53 and then the recording device 300 finishes the recording operation. Thus, by means of an identifying signal 191 sent from the transmission system 100, only requested software is surely recorded. |
