Digital TV gateway equipment and method for content security protection

Abstract

The invention discloses a digital TV gateway device. The gateway device includes a conventional functional unit and a security unit of a digital TV receiving device. The security unit includes a CAS gateway module and a DRM gateway module, which are used for descrambling multiple channels of content / programs in parallel. And parallel scrambling, at the same time, the DRM gateway module also performs device authentication and authentication on the device, responds to the terminal request through the HTTP server, and distributes the corresponding scrambled content / program to the terminal that has passed the device authentication and authentication; Specifically, the present invention also discloses a method for content security protection of a digital TV gateway device. The technical solution of the present invention enables the digital TV content / program to be effectively protected during the transmission process between the gateway device and various terminal devices, and can efficiently Channel switching can be performed efficiently, which improves the user experience effect.

Description

technical field [0001] The invention relates to digital TV content distribution technology, in particular to a digital TV gateway device and a content security protection method. Background technique [0002] Traditional digital TV programs are played by set-top boxes or digital TV all-in-one machines. In this mode, a special receiving interface (Tuner) is required, so that digital TV only supports single-screen playback (TV screen), and cannot be directly connected to other TVs. Other terminal devices (iPhone, iPad, Android mobile devices, PC, etc.). [0003] In order to solve this problem, in the prior art, a set-top box with an integrated gateway function is used to forward programs / contents to other various terminal devices by way of switching. The set-top box is wirelessly connected to the terminal equipment through a Wifi router. figure 1 It is a structural schematic diagram of a set-top box with a gateway function in the prior art. Such as figure 1 As shown, the s...

AI Technical Summary

Problems solved by technology

Other terminal devices in this technical solution can directly receive digital signals, but there are also some defects: 1) Programs / content between the set-top box and the terminal are usually transmitted in clear streams, and piracy is prone to occur during the transmission process, which makes the interests of operators affected Damage; 2) At a certain moment, the set-top box only descrambles one channel, that is, one program / content. If you want to switch channels, you need to resend the control information back to the regular function module of the set-top box, which will cause a long delay and low switching efficiency. Especially when the frequency point changes, the waiting time will be longer

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