Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Encrypting and de-encrypting for program of digital TV system and user cut-in managing method

A technology for digital TV system and access management, applied in the field of digital TV system program encryption, decryption and user access management

Active Publication Date: 2010-08-04
KONKA GROUP
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]Therefore, in view of the above disadvantages such as high cost of encryption and decryption of digital TV program signals and user management methods, difficulty in technology development, etc., it is necessary to develop a simple, easy-to-use, Low-cost digital TV system program encryption, decryption and user access management method

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
  • Encrypting and de-encrypting for program of digital TV system and user cut-in managing method
  • Encrypting and de-encrypting for program of digital TV system and user cut-in managing method
  • Encrypting and de-encrypting for program of digital TV system and user cut-in managing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] image 3 It is the basic encoding format in the transmission process of digital TV signals, and it is also the basic transmission encoding format of general digital signals. In this encoding format, there are three main components including synchronous header, transmission data, and end code. This kind of data structure is called "frame", and digital signals are transmitted frame by frame. The synchronization header and the end code are composed of several bits respectively. Generally, the more bits of the frame, the longer the frame length, and the shorter the interval between two adjacent frames, the number of bits required for the synchronization header and the end code Also more. If the interval between two adjacent frames is very long, only one or two bits are needed for the sync header and end code. The length of the frame is mainly determined by the data content, and the interval between frames is determined by the amount of data transmission. The amount of i...

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

This invention discloses a method for managing ciphering, de-ciphering and user access of programs of the digital TV system including generating ciphered data, cryptographic key data and user data at the transmission end, utilizing the ciphered data to replace the synchronous head of the digital TV signals and transmitting code streams to generate ciphered digntal TV signals, transmitting the modulated ciphered digital TV signals, ciphered data and user data to the user end, utilizing the cryptographic key data to recover the synchrous head of the ciphered digital TV signals and transmitting the code stream frames after modulating the received signals at the user end to recover the digital TV signals, then authenticating the authority of the user by the user data and user information stored in the storage of the user end to decide if it continues or stops to recover the synchronous head.

Description

technical field [0001] The invention relates to a digital television system, in particular to a program encryption, decryption and user access management method of the digital television system. Background technique [0002] At present, my country's digital TV programs are preparing to start broadcasting, and digital TV will replace analog TV sets. However, the technical problems of program charging that plague the development of digital TV in my country, that is, the technical problems of program signal encryption and conditional access, have not been very good. solve. [0003] figure 1 and figure 2 Shown is the basic schematic diagram of digital TV broadcasting and reception adopted by most countries in the world at present. figure 1 Shown is the schematic diagram of digital TV program signal transmission, figure 2 Shown is the schematic diagram of digital TV program signal reception. Compared with analog TV, in addition to the different modulation, demodulation, enc...

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): H04N7/16
Inventor 陶显芳
Owner KONKA GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com