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Digital TV area control method and equipment based on the method

A technology for digital TV and area control, applied in electrical components, image communication, selective content distribution, etc., can solve problems such as complex implementation process, and achieve the effect of solving the complex implementation process and simple and convenient implementation

Active Publication Date: 2018-04-10
STARTIMES SOFTWARE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned method for realizing regional control of digital TV involves multiple links such as the main front end, sub-head end, set-top box and smart card of the digital cable television system, resulting in a relatively complicated implementation process

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  • Digital TV area control method and equipment based on the method
  • Digital TV area control method and equipment based on the method
  • Digital TV area control method and equipment based on the method

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Embodiment Construction

[0039] 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, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0040] In the digital television conditional access system, ECM (Entitlement Control Message, authorization control information) is the key content of smart card descrambling. At the user end, the smart card first decrypts the ECM information, and then compares the Entitlement Information and Service Reference information in the ECM with the corresponding information in the smart card memory. If the data match, the smart card will send the control word Released to ...

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Abstract

The invention discloses a digital TV area control method, comprising: acquiring the ECM PID in the PMT table, adding it to the offset to obtain the offset ECM PID, and writing it into a new PMT table, wherein : the offset is the difference between the reference value corresponding to the area and the actual value of the ECM PID; the new PMT table is transmitted to the client, and the client obtains the offset ECM PID in the new PMT table , subtract the pre-stored offset to obtain the restored ECM PID. Specifically, the digital TV area control method disclosed in the present invention is simple and convenient to implement, and solves the problem that the implementation process of the existing digital TV area control method is relatively complicated. At the same time, the offset of each region is also unique. Only when the offset of the user terminal is the same as the offset used by the sub-head end, can the above process be completed, and the control of the digital TV area is also realized.

Description

technical field [0001] The present invention relates to the technical field of digital television broadcasting, and more specifically, relates to a digital television area control method and equipment based on the method. Background technique [0002] At present, digital TV has been promoted nationwide. In the process of operation, due to the differences in economic conditions in various regions, the marketing strategies and tariff standards adopted are different. At the same time, cable TV is a multi-level network, and the networks at different levels may not belong to each other and operate independently. This requires that a multi-level management system must be implemented in the operation of digital TV. In order to ensure the regional uniqueness and legitimacy of set-top boxes and smart cards, prevent card roaming, and fundamentally protect the operating interests of various regions, operators must consider adopting regional control technology. [0003] The document wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/435H04N21/6334
Inventor 杨文超谢飒
Owner STARTIMES SOFTWARE TECH CO LTD