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Reproduction-proof device and method in digital broadcast receiving system

A technique for duplicating devices and receiving systems, which can be applied to components of TV systems, analog security/charging systems, and components of color TVs, and can solve problems such as the inability to prevent illegal dissemination of information

Inactive Publication Date: 2004-08-25
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, an unauthorized third party can copy the contents of the storage medium, and thus cannot prevent illegal dissemination of the stored information

Method used

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  • Reproduction-proof device and method in digital broadcast receiving system
  • Reproduction-proof device and method in digital broadcast receiving system
  • Reproduction-proof device and method in digital broadcast receiving system

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Embodiment Construction

[0016] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0017] figure 2 A broadcast receiving system realizing the copy prevention function of the present invention is shown. exist figure 2 The system shown has some boxes with figure 1 The same blocks in , these blocks perform the same functions as the corresponding blocks in the conventional broadcast receiving system. here, figure 2 The labels of these boxes in the figure 1 The corresponding boxes are labeled the same. In addition, the present invention as figure 2 The illustrated system also includes: a scrambler 200 located at the input side of the hard disk drive (HDD) interface unit 110 for scrambling the descrambled Transport Stream (TS) patterned data TS2 again; and, key encryption Unit 202, configured to generate a new encryption key.

[0018] The following will refer to image 3 The detailed configuration of the key encryption unit 202 ...

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PUM

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Abstract

A copy prevention apparatus and method in a digital broadcasting receiving system protects information stored in a storage medium, such as HDD or DVD-RAM, from being illegally duplicated by an unauthorised third party. The copy prevention apparatus includes a demultiplexer for descrambling scrambled transport stream (TS) patterned data of a user selective and desired channel among a received multi-channel broadcasting and outputting the descrambled result, a scrambler for scrambling again the descrambled TS patterned data from the TS demultiplexer, a key encryption unit for decrypting the encrypted key of the scrambler and re-encrypting the decrypted key again, to thereby produce a new encryption key, and a system controller.

Description

technical field [0001] The present invention relates to a broadcasting receiving system for receiving and saving digital broadcasting signals, in particular to a device and method for preventing copying in the digital broadcasting receiving system, wherein, when saving broadcasting signals whose copyright should be protected in a storage medium , it is possible to prevent unauthorized and illegal copying of such broadcast signals. Background technique [0002] A hard disk drive (HDD) is an auxiliary storage device used in computers in which random access is possible, data transfer speed is fast and its cost is lower than other auxiliary storage devices, and a large capacity can be achieved. Recently, a digital versatile disc (DVD) has been promoted as a next-generation storage medium. One current form of DVD is DVD-RAM which can record and delete data at will. Therefore, an HDD or DVD-RAM drive is used as a storage device in a broadcast receiving system, allowing users to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/913H04N7/16
CPCH04N7/163H04N21/4334H04N2005/91364H04N5/913H04N21/4408H04N21/8355H04N21/4627H04N21/4367H04N21/4147H04N21/2347H04N21/835
Inventor 林明植
Owner SAMSUNG ELECTRONICS CO LTD
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