Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for realizing region locking

A technology of area and transmission flow, which is applied in the direction of analog security/charging system, cable transmission adaptation, etc., and can solve problems such as inability to manage users

Inactive Publication Date: 2006-09-27
SUMAVISION TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the CAS operating system, the problem of smart card roaming has become a difficulty of CAS. Users can use the same smart card to watch programs in different places, making it impossible for operators to effectively manage users in a specific area.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for realizing region locking
  • Method for realizing region locking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Please refer to accompanying drawing 1, which is a CAS (Conditional Access System for Digital Television) network diagram. The whole CAS is divided into a main front end and several sub front ends. In this embodiment, there are three sub front ends. Because the network diagram of each sub front end is the same, only the network diagram of the third sub front end is provided in the accompanying drawing 1. At the general front end, one or more channels of TS (transport stream) are input to the multiplexer and scrambler processing 101, and the scrambled TS is sent to the QAM (quadrature amplitude modulation) modulator for modulation processing 102, and each channel of TS corresponds to A QAM modulator, the TS processed by the QAM modulator is uploaded to SDH (Synchronous Digital Hierarchy) or HFC (Hybrid Fiber Coaxial Cable Network) network through mixer mixing 103 through the TS processed by the QAM modulator, and uploaded to HFC network 104 in the present embodiment . A...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method for realizing region locking is that a regional locking module is added at the general front of a digital TV condition receiving system and some TS process modules are set at several branch front ends separately, in which, the general front regional locking module applies for EMM data with described code stream to the condition receiving module to be bundled to TS data packet conforming the DVB standard to be delivered to a multiplexer by a TS play card, then to be downwarded to several branch front ends by HFC or SDH after multiplexed by the multiplexer, the branch front ends filter and remain related TS data packets containing the described character stream and modify their PID in comformity with EMMPID assigned in the interfered TS packet to be processed to realize regional locking by set-top box.

Description

technical field [0001] The invention belongs to the category of digital television broadcasting and relates to a method for realizing area locking. Background technique [0002] With the development of the digital TV broadcasting industry in China, the digital TV conditional access system (CAS), as the technical basis and powerful tool for the broadcasting and TV industry to break the single business philosophy of advertising as the main income and realize diversified business income, has become more and more popular. operator concern. CAS is a complete set of system that provides users with authorization control, authorization management and end set-top boxes to receive programs. The scrambling transmission of video, audio and data information is realized at the front end, and the program descrambling reception process is realized at the end set-top box. A user purchases a program and uses a set-top box connected to a TV to watch the purchased program. However, in the CA...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/16H04N7/10
Inventor 陈德权
Owner SUMAVISION TECH CO LTD