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USB bidirectional communication terminal device

A terminal device and two-way communication technology, applied in image communication, television, cable transmission adaptation, etc., can solve the problems that are unfavorable to the development of two-way business of radio and television operators, and the inability to realize two-way high-speed data transmission between USB and set-top boxes, so as to improve scalability Effect

Inactive Publication Date: 2009-08-19
天栢宽带网络科技(上海)有限公司 +1
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Problems solved by technology

[0004] The existing technology has the problem of transmitting data signals through coaxial cables, and it is impossible to realize the function of connecting USB with a set-top box (STB) or a computer for two-way high-speed data transmission, which is not conducive to the development of two-way services of radio and television operators.

Method used

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  • USB bidirectional communication terminal device
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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] The USB two-way communication terminal device of the present invention is a terminal device combining BIOC technology with a set-top box STB. After separating the cable TV signal (CATV signal) and IP data signal in the cable, they are transmitted to the set-top box through different transmission interfaces. In order to meet the needs of users for IP data broadband access and interactive TV services.

[0027] figure 2 It shows the hardware schematic diagram of the connection between the USB two-way communication terminal device and the set-top box. See figure 2 , USB two-way communication terminal device 1 comprises duplexer (Duplexer) 10, radio frequency module (RF Module) 11, communication chip 12, memory 13, cable input interface (Cable In) 14, cable TV signal (CATV) transmission interface 15 , USB transmission interface. The set-top box ...

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Abstract

The invention discloses a USB bidirectional communication terminal device, which is realized by connecting a USB and a set-top box or a computer to carry out the function of bidirectional high speed data transmission. The technical proposal is as follows: the device comprises a cable input connector used for receiving mixed signals in the cable, a diplexer used for separating wired TV signals with low frequency from IP data signals with high frequency according to different frequencies of mixed signals, radio module used for receiving the output with high frequency of the diplexer to realize processing of frequency conversion, a memory used for allocating system communication speed and memory communication protocol, communication chip to demodulate the received signals, a USB transmission connector used for transmitting IP data signals with high frequency after separation to the set-top box, and a wired TV signal transmission connector used for transmitting wired TV signals with low frequency to the set-top box. The USB bidirectional communication terminal device is applied to digital television field.

Description

technical field [0001] The invention relates to a communication terminal, in particular to a USB two-way communication terminal device related to a set-top box under the broadcast interactive coaxial network user access technology (BIOC, Broadcasting and Interactivity Over Cable). Background technique [0002] The recommended standards of the Guiding Opinions on Two-way Transformation of SARFT Cable Network include DOCSIS, MOCA, EOC, BIOC, etc. Among them, BIOC is a two-way access solution for the last mile after the optical node of the HFC network, fully utilizing the original distribution network resources , carrying broadcast television signals (analog / digital television) and data signals. [0003] For the technical principle of BIOC, please refer to figure 1 As shown, the principle of BIOC is divided into two parts: modulation / demodulation of OFDM and QAM modulation modes of baseband data signals, mixing / separation of TV signals and data modulation signals. BIOC techno...

Claims

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Application Information

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IPC IPC(8): H04N5/00H04N7/10H04L29/06H04N21/40
Inventor 吕品金荐张纯刚李颖然史迅刘隽马剑吴坚李克民
Owner 天栢宽带网络科技(上海)有限公司
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