Digital copyright management method and terminal
A digital copyright management and terminal technology, applied in TV, two-way working system, electrical components, etc., can solve the problems of illegal use, inability to realize, illegal distribution, etc., and achieve the effect of preventing illegal copying
Inactive Publication Date: 2009-12-30
天柏宽带网络科技(上海)有限公司
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- Application Information
AI Technical Summary
Problems solved by technology
Push VOD solves the problem that in a one-way network environment, it is impossible for users to enjoy online on-demand services at any time without using other on-demand request information to return to the network.
[0005] All the business essence of pre-push and on-demand downloading of content to the terminal device is to download the content for subsequent application. These solutions have certain security risks, and it is easy to cause the content to be on-demand to be copied, illegally used and illegally distributed.
Method used
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Embodiment Construction
[0031] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0032] figure 1 It is a schematic structural diagram of a digital rights management terminal in a specific embodiment of the present invention. Such as figure 1 As shown, the digital rights management terminal is used in a digital television service system and may be a set-top box. The terminal includes a demultiplexer 101 , a descrambler 102 , a decoder 103 , a digital rights management client 104 and a user smart card 105 .
[0033] After the terminal receives the data, the demultiplexer demultiplexes the received data, obtains the downloaded digital content and license, and sends it to the digital rights management client; the digital rights management client stores the downloaded digital content and license, and sends the license Give the user's smart card, obtain the authorization informatio...
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The invention discloses a digital copyright management method and a terminal. The terminal receives downloading digital content and a license encrypted by adopting a key of a user intelligent card and stores the license at a digital copyright management client side; when the downloading digital content is used, the digital copyright management client side reads the license and sends the license to the user intelligent card; the user intelligent card decrypts the license and outputs authorization message; the digital copyright management client side analyzes the authorization message, sends the scrambling control word encrypted message and the authorization key to the user intelligent card, the scrambling control word is decrypted by the user intelligent card and the decrypted scrambling control word is sent to a descrambler and the downloading digital content is sent into the descrambler; the descrambling is carried out on the downloading digital content by the descrambler and the descrambled downloading digital content is output to a decoder for decoding and then is used. The technical proposal can guarantee the use security of downloading or propelling of digital content in the scene of off-line use, and prevents the infringement act to the downloading digital content.
Description
technical field [0001] The invention relates to the field of digital television services, in particular to a digital rights management method and terminal. Background technique [0002] Content downloading and off-line use are a business form actively promoted by digital TV services, and the key technology is how to effectively manage the use of downloaded content. [0003] Content downloading is embodied in one-way and two-way digital TV services, such as content downloading service in two-way digital TV service, and content downloading and Push VOD service in one-way digital TV service. [0004] Push VOD is a VOD service suitable for one-way digital TV network. Different from other VOD video-on-demand systems, Push VOD uses the traditional one-way digital TV network system to push the digital content to be on-demand to the terminal set-top box, and The terminal set-top box saves the digital content to be on-demand to a storage device such as a local hard disk, and the use...
Claims
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Login to View More IPC IPC(8): H04N7/167H04N7/173
Inventor 赵志超辛宇
Owner 天柏宽带网络科技(上海)有限公司