JP2008243363A5

JP2008243363A5 -

Info

Publication number: JP2008243363A5
Application number: JP2008096708A
Authority: JP
Filing date: 2008-04-03
Publication date: 2008-11-20
Anticipated expiration: 2021-04-20

Claims

In a digital broadcast signal receiving apparatus for receiving a scrambled digital broadcast signal and recording / reproducing it on a recording medium,
The digital broadcast signal includes copy control information indicating whether the digital broadcast signal is allowed to be recorded on a recording medium,
Receiving means for receiving the digital broadcast signal;
Descrambling means for descrambling the received digital broadcast signal;
Recording / reproducing means for recording / reproducing the digital broadcast signal which has been descrambled on a recording medium;
Control information detecting means for detecting the copy control information from the digital broadcast signal which has been descrambled;
A recording / reproducing control unit for controlling a recording / reproducing operation of the recording / reproducing unit based on a detection result of the control information detecting unit;
It said reproduction control means is the recording and reproducing of the digital broadcast signal the copy control information indicates that allows recording only one generation, dark unique digital broadcast signal that has released the scramble to the recording and reproducing apparatus Goka the recorded go, along with the other devices to be able play odd, in the output during playback of the digital broadcast signal, only the copy control information and the same one generation to the digital broadcast signal reproduced recorded A first state in which information indicating that copying is permitted is output, and a second state in which information indicating that copying is prohibited is added to the reproduced digital broadcast signal and output. A digital broadcast signal receiver.

2. The digital broadcast signal according to claim 1, wherein the recording / playback control means outputs the digital broadcast signal in the first state only during a predetermined period after recording when the digital broadcast signal is played back and output. Receiver device.

In a digital broadcast signal receiving method for receiving a scrambled digital broadcast signal and recording / reproducing it on a recording medium,
Wherein the digital broadcast signal includes copy control information indicating whether allow recording the digital broadcast signal on a recording medium,
Receiving the digital broadcast signal;
Unscramble the received digital broadcast signal,
The copy control information indicates that recording for only one generation is permitted, and the digital broadcast signal that has been descrambled is recorded by performing encryption unique to the receiving device so that it cannot be reproduced by other devices ,
In the output at the time of reproduction of the digital broadcast signal, the first state of outputting the reproduced digital broadcast signal with information indicating that only the same generation as the copy control information is allowed to be recorded is output and reproduced. digital broadcast signal reception method characterized by having a second state of outputting by adding information indicating that copying is prohibited to the digital broadcast signal.

4. The digital broadcast signal receiving method according to claim 3, wherein when the digital broadcast signal is reproduced and output, the digital broadcast signal is output in the first state only within a predetermined period after recording.

In a digital broadcast signal transmission / reception method for scrambled and transmitting a digital broadcast signal, receiving the transmitted digital broadcast signal, and recording / reproducing it on a recording medium,
Scramble the digital broadcast signal,
Sending the digital broadcast signal together with copy control information indicating whether to permit recording on a recording medium;
Receiving the digital broadcast signal;
Unscramble the received digital broadcast signal,
The copy control information indicates that recording for only one generation is permitted, and the digital broadcast signal, which has been descrambled, is recorded by performing encryption unique to the receiving device so that it cannot be reproduced by other devices,
In the output at the time of reproduction of the digital broadcast signal, the first state of outputting the reproduced digital broadcast signal with information indicating that only the same generation as the copy control information is allowed to be recorded is output and reproduced. A digital broadcast signal transmission / reception method comprising a second state in which information indicating that copying is prohibited is added to the digital broadcast signal and output.

In a digital broadcast signal transmission method of scrambled and transmitted a digital broadcast signal,
Scramble the digital broadcast signal,
Sending the digital broadcast signal together with copy control information indicating whether to permit recording on a recording medium;
When the copy control information indicates that the copy control information permits recording for only one generation when the transmitted digital broadcast signal is received, the scrambled digital broadcast signal is decrypted with an encryption unique to the receiving device. The digital broadcast signal is output so that it cannot be reproduced by another device, and the reproduced digital broadcast signal can be recorded only for the same generation as the copy control information. Information indicating that it has a first state in which information to be added is output and a second state in which information indicating that copying is prohibited are added to the reproduced digital broadcast signal and output. A digital broadcast signal transmission method characterized by the above.