A home multimedia gateway system based on the key technology of dtv-vlc
A DTV-VLC, multimedia gateway technology, applied in the field of home multimedia gateway systems based on DTV-VLC key technologies, can solve the problems of poor customer experience, poor product stability, and high complexity of system hardware, simplifying production processes, reducing The effect of processing delay and improving transmission efficiency
Active Publication Date: 2022-04-05
深圳市凯利华电子有限公司
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Problems solved by technology
[0002] At present, most of the products on the market are integrated products of multiple modules and multiple systems, the customer experience is relatively poor, and the system hardware is highly complex, and the product stability is poor, and the research and development of key technologies for digital TV network and visible light communication fusion transmission is currently domestic There are no similar products out there
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[0023] 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.
[0024] see Figure 1 to Figure 3 A home multimedia gateway system 1 based on DTV-VLC key technology of the present invention includes a device for receiving terrestrial digital television signals (DTMB) transmitted by outdoor wireless broadcasting base stations or cable TV signals (DVB-C) accessed by wired cables A terrestrial digital information standard receiver; the terrestrial digital information standard receiver is integrated with a DTMB / DVB-C demodulation unit and a PLC adaptation unit;
[0025] The terrestrial digital information standard receiver receives the home DTMB signal, receives, a...
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The present invention provides a kind of home multimedia gateway system based on DTV-VLC key technology, including the terrestrial digital television signal (DTMB) that is used to receive the outdoor wireless broadcasting base station to transmit or the cable television signal (DVB-C) that is accessed by the wired cable Terrestrial digital information standard receiver: The terrestrial digital information standard receiver integrates a DTMB / DVB‑C demodulation unit and a PLC adaptation unit, and receives the incoming DVB‑C signal through the receiver to demodulate the incoming DVB‑C signal , decode, restore the digital TV video stream, and then modulate the digital TV video stream into a TDS‑OFDM signal. The terrestrial digital information standard receiver includes a tuner, a local oscillator driven analog-to-digital converter, and a device for counting the energy of the received signal. Automatic gain control unit, interpolation filter unit, channel equalizer and Hibert filter, this design effectively reduces the complexity of software and hardware in the actual engineering implementation of DTV-VLC fusion broadcasting system, improves transmission efficiency, reduces processing delay, and simplifies multimedia gateway equipment Production process, reduce production cost.
Description
[technical field] [0001] The invention relates to the technical field of home multimedia gateways, in particular to a home multimedia gateway system based on DTV-VLC key technology, which has good stability, simple structure, high transmission efficiency and can effectively reduce costs. [Background technique] [0002] At present, most of the products on the market are integrated products of multiple modules and multiple systems, the customer experience is relatively poor, and the system hardware is highly complex, and the product stability is poor, and the research and development of key technologies for digital TV network and visible light communication fusion transmission is currently domestic There are no similar products out there. [0003] Based on the above problems, how to make full use of the effective transmission bandwidth of power line and visible light communication, improve the efficiency of spectrum utilization, and effectively overcome the bottlenecks such as...
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IPC IPC(8): H04N21/426H04N21/436
CPCH04N21/42607H04N21/43615
Inventor 黄峰李金东宋玉龙
Owner 深圳市凯利华电子有限公司