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dvb conditional receiving device integrating basic data and normal data descrambling

一种正常数据、基本数据的技术,应用在电气元件、图像通信、选择性内容分发等方向,能够解决复杂接收终端、昂贵电视节目费用、收费少等问题

Inactive Publication Date: 2016-05-25
呼延志华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the existing digital TV program user group, there are high-end users who need very high-definition program content. They can afford expensive TV program fees and relatively complicated receiving terminals. Therefore, they can watch high-definition program content through three-level decryption. But there are also some low-income groups who have just transferred from the free analog TV user base. For them, the continuity of the program and the economy of the program are important. less basic data streams, and provide inexpensive charging terminals that enable them to watch, for example, standard-definition TV programs

Method used

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Embodiment Construction

[0014] The embodiment of the DVB conditional access device integrating basic data and normal data descrambling of the present invention will be described in detail below with reference to the accompanying drawings.

[0015] figure 1A structural block diagram of a DVB conditional access device integrating basic data and normal data descrambling is shown according to the embodiment of the present invention. Among them, the DVB conditional reception device capable of receiving two channels of audio and video data with different resolutions for different grades of users to select and play integrated basic data and normal data descrambling includes a demultiplexer 1, a controller 2, an unpacking module 3 and a descrambling Module 4, the transport stream TS stream received by the demultiplexer 1 includes basic data and normal data with different collection rates and the same program content, and the demultiplexer 1, unpacking module 3 and descrambling module 4 sequentially process t...

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Abstract

The invention relates to a DVB (Digital Video Broadcasting) condition receiving device capable of descrambling integrated basic data and normal data. The DVB condition receiving device comprises a demultiplexer, a controller, an unpacking module and a descrambling module, wherein a transport stream TS received by the demultiplexer comprises basic data and normal data with different acquisition rates and the same program content, and the demultiplexer, the unpacking module and the descrambling module sequentially carry out the demultiplexing, unpacking and descrambling operation on the received transport stream; and the controller is connected with the descrambling module and receives user priorities so as to start up the basic data descrambling operation or normal data descrambling operation according to different user priorities. By the adoption of the DVB condition receiving device capable of descrambling integrated basic data and normal data provided by the invention, two data contents of different resolutions can be received at a receiving end, two descrambling methods of different degrees of difficulty can be integrated at the receiving end, and the two data contents and the two descrambling methods respectively correspond to each other so as to adapt to the watching demand of different user groups at the receiving end for digital TV programs.

Description

technical field [0001] The invention relates to the field of digital television reception, in particular to a DVB conditional reception device integrating basic data and normal data descrambling. Background technique [0002] DVB, that is, digital video broadcasting, was initiated by the "Joint Expert Group" jointly formed by the European Telecommunications Standardization Organization, the European Electronic Standardization Organization and the European Broadcasting Union. C. There are four types of terrestrial TV DVB-T and handheld terrestrial wireless TV DVB-H. The DVB standard includes channel coding, source coding, conditional access, subtitle transmission and other components. At present, the DVB standard and the improved standard compatible with DVB are widely used in various countries and regions such as Europe, Japan, Canada, and China. [0003] The conditional access system CAS in the DVB standard is a system deployed to charge for digital TV programs transmitte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/41H04N21/418H04N21/434
CPCH04N21/4181H04N21/4348
Inventor 不公告发明人
Owner 呼延志华
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