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Communication method for digital television subscriber management system and condition receiving system

A conditional access system, digital TV technology, applied to TV system components, color TV components, TV and other directions, can solve the problem that the continuous connection between the system and the system cannot be guaranteed, the immediate response of the other party's system cannot be guaranteed, and the data transmission cannot be guaranteed. and other issues to ensure reliability, strong performance, and high execution efficiency.

Inactive Publication Date: 2008-05-21
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Applications usually send requests to the network or respond to network requests through "sockets", but Socket communication cannot guarantee the continuous connection between the system and the system. The data is correctly transmitted to the network through the other party, and it cannot guarantee the immediate response of the other party's system when the data needs to be transmitted next time.
[0004] 2. XML communication: Extended Markup Language——XML is a simple data storage language that uses a series of simple tags to describe data and establish connections through tag description data. Although XML is extremely simple and easy to grasp and use, XML occupies Space takes up more space than binary data

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The SMS sends a connection application packet to the CAS. The format of the packet is mainly designed according to the standard agreed by both parties to initialize the connection. The initialization data is mainly related to CAS and SMS information, including interface protocol version number, encryption type, key type, operator serial number, data length and other information; if CAS receives the application connection data packet, verify whether the data packet is correct information, if so, then return the connection confirmation data packet, the data packet content is mainly the key of the authorized encrypted information to encrypt other data; otherwise the connection between SMS and CAS fails. After SMS and CAS establish a connection, exchange authorization data: SMS sends various encrypted authorization data information to CAS, including purchasing business information, OSD information, E-Mail information setting user characteristics, VOD information, and wallet ...

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PUM

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Abstract

The invention relates to a technology of communication between an SMS and a CAS, in particular to a method connecting the SMS and the CAS. The invention discloses a method of communication between a subscriber management system of digital TV and a conditional access system, which ensures that the SMS is connected with the CAS. The invention adopts the technical proposal that: a. the SMS is connected with the CAS; b. the SMS and the CAS exchange authorized data; c. if the CAS does not receive the data transferred by the SMS within the prescribed time, the CAS sends heartbeat connection detecting packets to the SMS regularly; d. the SMS returns connection confirmation packets to the CAS and continues to exchange authorized data with the conditional access system; e. the SMS breaks the connection with the CAS. The invention has the advantages that: the long connection between the SMS and the CAS is ensured, and the reliability of data transmission between systems is ensured.

Description

technical field [0001] The invention relates to a communication technology between a digital TV user management system and a conditional access system, in particular to a communication method between the digital TV user management system and the conditional access system. Background technique [0002] SMS (Subscriber Management System) is an operation management information system that uses digital technology and network technology to provide services for users to order digital TV products. SMS forms a user database by recording and processing user order information, and sends the basic data of user authorization management information (EMM) to CAS through the interface with CAS (Conditional Access System, Conditional Access System), and CAS realizes the Users watch the control of TV programs. Combined with CAS, SMS realizes digital TV business management functions such as user authorization, anti-authorization, account opening, account cancellation, service subscription, O...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/16H04N5/00H04N21/258H04N21/63
Inventor 刘东肖建唐军
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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