Apparatus and method for moving contents having a restricted number of copies between storage media

• US 7,665,145 B2
• Filed: 09/19/2005
• Issued: 02/16/2010
• Est. Priority Date: 03/31/2001
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Jeong, Jae Yoon
• Primary Examiner(s): Pich; Ponnoreay
• Application Number:
  US11/228,360
• Publication Number:
  US 20060015721A1
• Time in Patent Office: 1,611 Days
• Field of Search: 726 30- 31, 705/57
• US Class Current: 726/26
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00753 wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
• CPC Class Codes: H04N 2005/91328 the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/913 for scrambling ; for copy protection

Abstract

A method of managing content, the method being performed by a device including an analyzing unit and a control unit. The method includes judging, via the analyzing unit, whether the content can be moved to an external entity based on moving control information, the moving control information being different from copy control information indicating whether the copy of the content is permitted, determining whether an authentication with the external entity is needed in order to move the content to the external entity, if the judging step judges that the content can be moved, and controlling, via the control unit, a moving operation of the content to the external entity such that the content can be moved to the external entity without the authentication if the determining step determines the authentication is not needed.

Claims

1. A method for moving content, the method being performed by a device including an analyzing unit, a control unit and a memory, the method comprising:

checking, via the analyzing unit, whether or not content control information includes moving control information;

if the checking step determines the content control information includes the moving control information, judging, via the analyzing unit, whether or not the content can be moved from the memory to an external entity based on the moving control information, wherein the moving control information is distinguished from copy control information indicating whether or not a copy of the content is permitted;

determining, via the analyzing unit, whether a communication is possible with the external entity through an interface, if the judging step determines the content can be moved;

moving, via the control unit, the content to the external entity if the judging step judges the content can be moved based on the moving control information and the determining step determines the communication is possible; and

deleting, via the control unit, the content stored in the memory if the moving step moves the content to the external entity,

wherein the content control information is also moved to the external entity according to the moving of the contents.

2. The method of claim 1, wherein an authentication is performed using a particular key value.

3. The method of claim 1, wherein the interface is an IEEE1394 interface or Universal Serial Bus interface.

4. The method of claim 1, wherein the judging step comprises:

judging whether the external entity can store the content, and

wherein the moving step moves the content to the external entity if the judging steps judge the content can be moved and the external entity can store the content.