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

Program stream decryption method, device and terminal

A program stream and terminal technology, which is applied in the field of program stream decryption and can solve the problems of inability to use the duration of use, payment by program content, and restrictions.

Inactive Publication Date: 2014-10-15
CHINA MOBILE COMM GRP CO LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the above method is that: individual mobile terminal users will be subject to the restrictions of mobile operators when using mobile broadcast TV services.
[0006] The disadvantage of this method is that the service fee paid by the vehicle terminal user is collected once through the conditional access card (CA card), and it cannot be paid according to the length of use or the content of the program according to the user's use of the radio and television service.

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
  • Program stream decryption method, device and terminal
  • Program stream decryption method, device and terminal
  • Program stream decryption method, device and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0035] The embodiments of the present invention aim at the deficiencies of the prior art, and provide a method, device, and terminal for decrypting program streams in mobile broadcast TV services, so that users are not restricted by the cooperative mobile operators when using mobile broadcast TV services. It is not restricted by non-personal mobile terminals through the conditional access card (CA card) one-time service usage fees, so as to effectively protect the interests of mobile broadcast TV service users and reduce terminal costs.

[0036] figure 1 It is a schematic flowchart of a method for program stream decryption according to an embodiment of the present invention, such as figure 1 As shown, this embodiment includes:

[003...

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

The invention provides a program stream decryption method, a device and a terminal, belonging to the mobile broadcasting television field. The program stream decryption method comprises steps of obtaining business through Wifi network when a client identification module SIM card is not inserted in the terminal, separating the encrypted program stream secret key information from the received broadcasting program stream, utilizing the business secret key to perform decryption on the program stream secret key information to obtain a control word CW, and performing decryption on the received broadcasting programs stream according to the CW. The technical scheme of the invention enables the terminal usage not to be limited by the operator to achieve decryption of the program stream secret key and watching broadcasting programs on the premise that the terminal cost and the network device alternation cost are not increased.

Description

technical field [0001] The invention relates to the field of mobile broadcasting and television, in particular to a method, device and terminal for program stream decryption. Background technique [0002] The mobile broadcast TV service is to transmit various multimedia information such as traditional audio and video broadcast content, traffic information, and news to personal mobile terminals or vehicle-mounted terminals, to provide high-quality voice or diversified data services, and to provide two-way mobile Receive service. [0003] Usually, the mobile broadcast TV service is a business jointly operated by mobile operators and broadcast TV operators. The radio and television operators transmit radio and television signals, and encrypt the program content carried by the transmitted radio and television signals. The mobile operator integrates the mobile broadcast signal receiving function on the personal mobile terminal, so that the personal mobile terminal can receive t...

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
IPC IPC(8): H04N21/4405H04N21/4623
Inventor 侯清富
Owner CHINA MOBILE COMM GRP CO LTD
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