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Two-way radio embedded gateway based on ground digital television channels

A terrestrial digital TV, embedded gateway technology, applied in wireless communication, image communication, electrical components and other directions

Active Publication Date: 2012-06-20
BEIJING SAGETOWN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current Internet transmission technology is limited to wired transmission and wireless transmission at short distances and low mobile speeds

Method used

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  • Two-way radio embedded gateway based on ground digital television channels
  • Two-way radio embedded gateway based on ground digital television channels
  • Two-way radio embedded gateway based on ground digital television channels

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Experimental program
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Embodiment Construction

[0031] 1. System working method and transmission protocol

[0032] For the transmitting direction, the data is converted from IP data into TS packets, and the TS flow data is stored in the dual-port buffer 7 by 1, and then the programmable logic device is notified to read. The work of the programmable logic device is to read the data from the buffer and send the data from the 10 interface to the modulator for wireless transmission in accordance with the specific timing of the TS stream modulator. The data transmission timing is as follows: Figure 5 shown. Due to the flexible control of the programmable logic device, the TS stream interface of the present invention can adapt to most TS modulators.

[0033] For the receiving direction, the programmable logic device 9 captures valid data from the TS demodulator interface, and completes the elimination of empty frames. Store the valid signal in the dual-port buffer 8, and notify the embedded processor 1 to read the data in the ...

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PUM

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Abstract

The invention designs a two-way radio embedded gateway based on ground digital television channels, which is used for transmitting Ethernet data based on digital television radio channels. A system of the radio embedded gateway is used for converting the Ethernet data into TS flow data suitable for radio transmission, simultaneously receiving the TS flow data and converting the TS flow data into IP data. Different kinds of equipment of two network segments are distributed according to different IP addresses by users; IP packets transmitted by equipment which corresponds to all IPs are all packed into uniform TS flow data packets; the TS flow data packets are collected to a TS modulator interface for radio transmission; a receiving end executes opposite work; finally, the received TS packets are restored into IP packets; and an embedded processor is used for carrying out address analysis work for realizing the corresponding transmission of a transmitting end and a terminal. According to different application needs, the gateway can be used for building different network frames, such as one-way and two-way transmission in the same network segment, and one-way and two-way transmissionacross network segments. All kinds of flexible configurations can be realized by modifying power scripts and the support of all kinds of configurations is only used on the difference of software processing protocols practically.

Description

technical field [0001] Nowadays, the technology of wireless transmission of digital TV is relatively mature, mainly through TDS-OFDM (Time Division Synchronic Orthogonal Frequency Division Multiplexing, Time Division Synchronous Orthogonal Frequency Division Multiplexing) technology. Currently, wireless modem devices with standard TS (Transport Stream, Transport Stream) streams are generally used in the market to transmit digital television signals. The invention is a gateway matching the interfaces of these devices, which is used for long-distance and high-speed wireless Internet transmission, and expands the application range of digital TV wireless channels. Background technique [0002] With the maturity of computer technology and Internet technology, more and more devices provide network interconnection functions. The main purpose of these functions is to meet the needs of real-time data transmission. However, the current Internet transmission technology is limited to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/61H04N21/63H04W88/16
Inventor 吕英明乐磊毛世文赵志刚吴飞
Owner BEIJING SAGETOWN TECH