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Interactive digital signal transmission method and system

A digital signal and transmission method technology, which is applied in the field of interactive digital signal transmission method and system, can solve the problems of poor applicability and waste of network bandwidth, and achieve the effect of strong applicability and saving network bandwidth

Inactive Publication Date: 2009-07-15
SHENZHEN LONG VISION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the embodiment of the present invention is to provide an interactive digital signal transmission method, aiming to solve the problem that in the video transmission network model provided by the prior art, operators transmit all channels to each set-top box, which wastes network bandwidth and has poor applicability The problem

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  • Interactive digital signal transmission method and system
  • Interactive digital signal transmission method and system
  • Interactive digital signal transmission method and system

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] In the embodiment of the present invention, resource allocation is performed on the digital signal transmission channel according to the received request signal of at least one digital interactive information, and the obtained corresponding digital interactive information is passed through corresponding quadrature amplitude modulation (QAM) Modulation, QAM) modulation equipment demodulation, through the corresponding digital signal transmission channel to send to the corresponding digital TV receiving terminal.

[0019] figure 1 The flow of the interactive digital signal transmission method...

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Abstract

The invention provides a transmission method and system of interactive digital signals belonging to the digital signal processing technology field. The method comprises: receiving at least a request signal of digital interactive information and outputting an obtaining instruction and a distribution signal of digital interactive information corresponding to the request signal according to the request signal; obtaining the digital interactive information corresponding to the request signal according to the obtaining instruction and outputting it; receiving output the digital interactive information and encrypting the same and sending processed digital interactive information, after modulated by a corresponding QAM modulation device, to corresponding digital TV receiving terminal via the transmission channel of digital signals, which realizes recycling and re-distribution of idle digital signal transmission channels when the user changes service content and saves network bandwidth with strong applicability.

Description

technical field [0001] The invention belongs to the technical field of digital signal processing, and in particular relates to an interactive digital signal transmission method and system. Background technique [0002] At present, in my country's cable TV transmission network, the broadcast channels watched by viewers at the same time only account for about 20% of all channels. In the traditional video transmission network model, operators transmit all channels to each set-top box, making the network bandwidth It is wasted in the transmission of programs that no one watches, and the applicability is poor. Contents of the invention [0003] The purpose of the embodiment of the present invention is to provide an interactive digital signal transmission method, aiming to solve the problem that in the video transmission network model provided by the prior art, operators transmit all channels to each set-top box, which wastes network bandwidth and has poor applicability The prob...

Claims

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Application Information

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IPC IPC(8): H04N7/16H04N7/173H04N5/44
Inventor 曾刘彬
Owner SHENZHEN LONG VISION
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