JP2010073305A5

JP2010073305A5 -

Info

Publication number: JP2010073305A5
Application number: JP2009259425A
Authority: JP
Filing date: 2009-11-13
Publication date: 2010-09-02
Anticipated expiration: 2021-02-16

Claims

  In a content transmission / reception system for playing back content recorded on a first recording medium of a content transmission device, transmitting the content to the content reception device, and recording the content on the second recording medium of the content reception device.
  The content transmission device includes:
  Playback means for playing back content from the first recording medium;
  A connection is established with the content receiving device, an authentication process is performed with the content receiving device, key information is exchanged with the content receiving device, and the reproduction means is configured based on the key information. Transmission means for encrypting the reproduced content and transmitting it to the content receiving device,
  The content receiving device is:
  The content received based on the key information by establishing a connection with the content transmission device, performing authentication processing with the content transmission device, exchanging key information with the content transmission device Receiving means for decrypting the encryption of
  Recording means for recording the content received by the receiving means on the second recording medium,
  When the content transmitting device and the content receiving device move the content recorded on the first recording medium to the second recording medium,
  Establishing a connection, performing authentication processing, exchanging the key information for encrypting the content to be moved,
  Do not exchange the key information for encrypting the content moved by authentication with an external device other than the content receiving device,
  The content to be moved is reproduced from the first recording medium, encrypted based on the key information, and transmitted.
  Receiving the transmitted content, decrypting the cipher based on the key information and recording it on the second recording medium;
  Making it impossible to reproduce the content recorded on the first recording medium after confirming that it has been recorded on the second recording medium,
  A content transmission / reception system, wherein when the movement of the content is finished, the connection is discarded, and the key information for encrypting the moving content is discarded.

The content transmitting apparatus, when moving the content recorded on the first recording medium to the second recording medium, if a connection is established with an external apparatus, the external apparatus A content transmission / reception system that establishes a new connection different from the connection with the content receiving apparatus and moves the content.

When the content transmitting device moves the content recorded on the first recording medium to the second recording medium, the content transmitting device encrypts the content as non-copyable to other devices other than the content receiving device. A content transmission / reception system characterized by comprising:

  In a content transmission device capable of reproducing content recorded on a recording medium and transmitting the content to a plurality of external devices,
  Playback means for playing back content from the recording medium;
  A connection is established with the external device, the external device is authenticated, key information is exchanged with the authenticated external device, and the reproduction unit reproduces the key information based on the key information. Interface means for encrypting the content and transmitting it to the external device;
  The interface means, when moving the content recorded on the recording medium to an external recording device,
  Establishing a connection with the recording device, authenticating the recording device, exchanging the key information for encrypting the moving content;
  Do not exchange the key information for encrypting the content moved by authentication with an external device other than the recording device,
  The content to be moved is encrypted based on the key information and transmitted to the recording device,
  Making it impossible to reproduce the content recorded on the recording medium after confirming that it has been recorded by the recording device,
  A content transmitting apparatus, wherein when the content movement is completed, the connection with the recording apparatus is discarded, and the key information for encrypting the moving content is discarded.

The interface means, when moving the content recorded on the recording medium to the recording device, if a connection with an external device is established, a new connection different from the connection with the external device. 5. The content transmitting apparatus according to claim 4, wherein the content is moved by establishing a secure connection with the recording apparatus.

The interface unit encrypts and transmits the content as a non-copyable device to another device other than the recording device when moving the content recorded on the recording medium to the recording device. The content transmission apparatus according to claim 4 or 5.

  In a content transmission method in a content transmission device capable of reproducing content recorded on a recording medium and transmitting the content to a plurality of external devices,
  When moving the content recorded on the recording medium to an external recording device,
  Establishing a connection with the recording device, authenticating the recording device, exchanging the key information for encrypting the moving content;
  Do not exchange the key information for encrypting the content moved by authentication with an external device other than the recording device,
  The content to be moved is encrypted based on the key information and transmitted to the recording device,
  Making it impossible to reproduce the content recorded on the recording medium after confirming that it has been recorded by the recording device,
  A content transmission method comprising: discarding a connection with the recording device when the content has been moved, and discarding the key information for encrypting the moving content.

When moving the content recorded on the recording medium to the recording device, if a connection is established with an external device, a new connection different from the connection with the external device is recorded on the recording device. The content transmission method according to claim 7, wherein the content is moved by being established with an apparatus.

8. When moving the content recorded on the recording medium to the recording device, the content is encrypted and transmitted to another device other than the recording device as being non-copyable. 9. The content transmission method according to 8.