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System, protection method and server for realizing the virtual channel service

A technology of virtual channel and server, applied in analog security/charging system, transmission system, two-way working system, etc., can solve the problem of occupying system storage resources, etc.

Inactive Publication Date: 2007-09-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The embodiment of the present invention provides a system, a protection method, an encryption server, and a quasi-video-on-demand server for realizing virtual channel services, so as to solve the problem that in the existing NVOD virtual channel services, a large amount of encrypted messages of VOD program copies encrypted many times is occupied Problems with system storage resources

Method used

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  • System, protection method and server for realizing the virtual channel service
  • System, protection method and server for realizing the virtual channel service
  • System, protection method and server for realizing the virtual channel service

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Embodiment Construction

[0047] The embodiment of the present invention provides a virtual channel service implementation method for encrypting NVOD programs, generating a uniquely associated content key for each VOD program that needs to be multicast on a virtual channel, and using the content key to pair the associated VOD The program is encrypted, and the encrypted program content of the VOD program is saved. The encrypted program content is used to generate an encrypted message and multicast the encrypted message on the virtual channel; and generate a channel key for the virtual channel that multicasts the VOD program. The channel key is authorized to the user terminal device requesting the virtual channel, and the encrypted message of the VOD program is multicast on the virtual channel, and the content key encrypted by the channel key is multicast. In this way, the user terminal equipment joining the virtual channel uses the authorized channel key to decrypt to obtain the content key, and uses the...

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Abstract

The invention relates to the video on demand (VOD) technique, especially relating to a virtual channel service implementing system, protecting method, encryption server and quasi-video on-demand server. And the invention generates a unique related content secret key for each VOD program in need of multicast in vertical channel and uses the content secret keys to encrypt the related VOD programs and multicasts the encrypted messages in the vertical channel; generates a channel secret key for the virtual channel multicasting the VOD program and authorizes the channel secret key to user terminal equipment requesting the virtual channel, and multicasts the channel secret key-encrypted content secret keys in the virtual channel. Thus, the user terminal equipment joining the virtual channel uses the authorized channel secret key to decrypt and obtain the content secret keys then for decrypting the encrypted messages of VOD programs. And thus, it only needs to encrypt the VOD program once and stores a corresponding encrypted program, saving system storage resources.

Description

technical field [0001] The invention relates to video-on-demand technology, in particular to a system for realizing virtual channel services, a protection method, an encryption server and a quasi-video-on-demand server. Background technique [0002] NVOD (Near Video On-Demand, quasi-video-on-demand) is a quasi-video-on-demand service. It was originally a service in the field of cable TV. Play non-stop, the programs in multiple channels are the same, but start playing at a certain time interval. Users can watch programs of different schedules by selecting a suitable channel. [0003] With the popularization of broadband networks, IPTV (Internet Protocol Television or Interactive Personal Television, IP TV) service, that is, interactive Internet TV, has widely deployed VOD (Video On-Demand, video on demand) service. In VOD service, users can freely specify the content of programs. Start time, and use operations such as fast forward, fast rewind, pause and positioning during ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/167H04N7/16H04N7/173H04L29/08
CPCH04N21/26613H04N21/47208H04N21/47202H04N21/26606H04N21/23473H04N21/63345H04N7/17318H04N21/6405H04N21/2668H04N7/1675H04N21/2347H04N21/2221
Inventor 孙超
Owner HUAWEI TECH CO LTD