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Copy protection method, CableCARD module and video system of digital cable broadcasting channel

A technology for cable broadcasting and copy protection, which is applied to components of TV systems, analog security/charging systems, and pulse modulated TV signal transmission.

Inactive Publication Date: 2009-09-30
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] As a result, the content of the copied channel may be unduly restricted because the CCI value exchange does not occur due to a channel change operation from an analog channel to a digital channel
[0022] Additionally, users may believe that duplication of content from digital broadcast channels should be allowed and may therefore mistake it for a duplication error on video equipment or CableCARD modules

Method used

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  • Copy protection method, CableCARD module and video system of digital cable broadcasting channel
  • Copy protection method, CableCARD module and video system of digital cable broadcasting channel
  • Copy protection method, CableCARD module and video system of digital cable broadcasting channel

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Embodiment Construction

[0043] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The exemplary embodiments are described below in order to explain the present invention by referring to the figures.

[0044] refer to image 3 , a video system according to an exemplary embodiment of the present invention includes a CableCARD module 10 and a video device 20 . CableCARD module 10 and video equipment 20 provide predetermined digital cable broadcasting standards. The restriction on copying the content of the digital broadcast channel is determined in the video device 20 based on the exchange of copy protection values ​​defined by the appropriate digital cable broadcast standard.

[0045] Here, the digital cable broadcasting standard according to an exemplary embodiment of the present invention is the OpenCable standard, and the copy p...

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Abstract

A copy protection method of a digital cable broadcasting channel according to a predetermined digital cable broadcasting standard is provided which comprises changing a channel to a first digital cable broadcasting channel and exchanging a copy protection value of the digital cable broadcasting standard between a CableCARD module and a video device corresponding to the channel change operation of the first digital cable broadcasting channel without regard to at least one former channel with respect to the first digital cable broadcasting channel.

Description

technical field [0001] Apparatus and methods consistent with the present invention relate to copy protection methods, CableCARD (cable card) modules and video systems according to predetermined digital cable broadcasting standards, and in particular to such copy protection methods, CableCARD modules and video systems that prevent The copy protection value of the digital cable broadcast standard for the content of the same digital cable broadcast channel in the change operation is not exchanged. Background technique [0002] Recently, the use of digital terrestrial television broadcasting and digital satellite broadcasting as broadcasting media has rapidly grown globally. [0003] Digital cable broadcasting standards include: OpenCable (open cable) standard used in the United States, South Korea and other places, digital cable video broadcasting (DVB-C, Digital Video Broadcast-Cable) standard used in Europe, and cable integrated service used in Japan Digital broadcasting (IS...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/913H04N7/24H04N7/16H04N21/4367H04N7/10
CPCH04N5/913H04N7/163H04N21/4181H04N21/4383H04N21/4627H04N2005/91328
Inventor 金到映金基镐姜恩憬
Owner SAMSUNG ELECTRONICS CO LTD
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