Digital-watermark-based digital copyright management method and device for IPTV terminals

A digital copyright management and digital watermarking technology, applied in image communication, selective content distribution, electrical components, etc., can solve problems such as increasing decryption costs and affecting the experience of playing video content on IPTV terminals

Active Publication Date: 2012-10-31
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Problems solved by technology

Since the video content is stored in the form of ciphertext, when the IPTV terminal uses the same encrypted video content multiple times, it needs t

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  • Digital-watermark-based digital copyright management method and device for IPTV terminals
  • Digital-watermark-based digital copyright management method and device for IPTV terminals
  • Digital-watermark-based digital copyright management method and device for IPTV terminals

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] figure 1 It is the flow chart of the digital rights management method of the IPTV terminal based on the digital watermark according to one embodiment of the present invention, as figure 1 As shown, it includes the following steps:

[0032] S101, when the first IPTV terminal acquires digital video content from a server, embed a user identification watermark in the digital video content, obtain and store video content containing the user id...

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Abstract

The invention discloses a digital-watermark-based digital copyright management method and a device for IPTV (Internet Protocol Television) terminals, wherein the method comprises the steps as follows: embedding a user identity watermark in a digital video content when a first IPTV terminal obtains the digital video content from a server, thereby obtaining and storing the video content with the user identity watermark; obtaining a security communication key TCK (Technology Compatibility Kit) through key agreement, and establishing a communication protection channel between the first IPTV terminal and a second IPTV terminal; adopting the security communication key TCK to encrypt the video content with the user identity watermark at the first IPTV terminal according to the request of the second IPTV terminal, and sending the encrypted video content to the second IPTV terminal through the communication protection channel; and decoding the video content received by the second IPTV terminal according to the secure communication key TCK, thereby obtaining the video content with the user identity watermark.

Description

technical field [0001] The present invention relates to the field of digital rights management, in particular to a digital watermark-based IPTV terminal digital rights management method and device. Background technique [0002] Digital Rights Management (DRM, Digital Rights Management) is a series of software and hardware technologies to realize the copyright protection of digital video content. Its main purpose is to protect digital video content, so that buyers of digital video content can use it within the agreed scope of authorization. [0003] At present, the digital copyright management method of the IPTV system is implemented by adopting cryptographic technology, which protects the security of transmission and distribution of digital video content. For the IPTV system under the protection of digital rights management, most of the recorded or downloaded digital video content is stored in the IPTV terminal in the form of ciphertext, and the plaintext of the digital vid...

Claims

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Application Information

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IPC IPC(8): H04N21/8358H04N21/254
Inventor 舒南飞于志强唐凌吴渊丁瑶王杰斌鲁昱王芳
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