Content output apparatus, content output method and content acquisition apparatus

• US 7,752,462 B2
• Filed: 11/29/2005
• Issued: 07/06/2010
• Est. Priority Date: 11/30/2004
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Fukushima, Michihiro
• Primary Examiner(s): Zand; Kambiz
• Assistant Examiner(s): Tran; Tongoc
• Application Number:
  US11/288,130
• Publication Number:
  US 20060117191A1
• Time in Patent Office: 1,680 Days
• Field of Search: 726 2- 5, 726/27, 726/30, 726/29, 713/193, 725/31, 380201-203
• US Class Current: 713/193
• CPC Class Codes: H04N 21/4135 external recorder interface circuits between an apparatus for recording television signals and a television receiver H04N5/775
• CPC Class Codes: H04N 21/4334 Recording operations recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27
• CPC Class Codes: H04N 21/4367 Establishing a secure communication between the client and a peripheral device or smart card
• CPC Class Codes: H04N 21/4408 involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
• CPC Class Codes: H04N 7/1675 Providing digital key or authorisation information for generation or regeneration of the scrambling sequence pseudo-random number generators in general G06F7/58

Abstract

A content output apparatus of the invention comprises an encryption processing unit configured to apply an encryption processing to the content, a recording unit configured to record the content to which the encryption processing has been applied and identification information which identifies the content itself on the network in the storage device on the network so as to be related with each other, and an output unit configured to read a requested content from the storage device on the basis of a content acquisition request supplied via the network, decrypt the encryption, further apply a predetermined processing to the content, and transmit it on the network.

Claims

1. A content recording and reproducing system for recording and reproducing content in and from a storage device via a network, the content recording and reproducing system comprising:

an encryption processing unit configured to cause one of one or more first devices to encrypt the content to be recorded in the storage device, the first device being configured to output the content;

a recording processing unit configured to cause the one of the one or more first devices to record in the storage device the content encrypted by the one of the one or more first devices and identification information which identifies the one of the one or more first devices which has encrypted the content, the encrypted content and the identification information being related to each other;

a selection processing unit configured to cause a second device to select a desired one of a plurality of contents recorded in the storage device, the second device being configured to request reproduction of a content recorded in the storage device;

an identification processing unit configured to cause the second device to identify the first device which has encrypted the selected content, based on the identification information related to the selected content;

a request processing unit configured to cause the second device to issue, in the network, an acquisition request for acquisition of the selected content, which is to be supplied to the identified first device;

an authentication processing unit configured to cause the first device to authenticate the second device which has issued the acquisition request, when the acquisition request is supplied to the first device through the network;

an output processing unit configured to cause the first device to read the content for which the acquisition request is issued, from the storage device, decrypt the content, subject the decrypted content to processing of encryption which is applicable between the first device and the second device which has issued the acquisition request, and transmitting the content onto the network; and

a reproduction processing unit configured to cause the second device to decrypt and reproduce the content supplied from the first device through the network.

2. The content recording and reproducing system according to claim 1, wherein the recording unit is configured to add the identification information which identifies the content itself on the network to the content to which the encryption processing has been applied by the encryption processing unit, and cause the storage device to record it therein.

3. The content recording and reproducing system according to claim 1, wherein the recording unit is configured to record on the storage device a management table which relates a name of the content to which the encryption processing has been applied by the encryption processing unit to the identification information which identifies the content itself on the network.