Digital television set top box based on LED visible light communication

A technology of visible light communication and television, which is applied in image communication, electrical components, selective content distribution, etc. It can solve the problems of small transmission volume and interference, and achieve the effect of fast transmission speed, low power consumption and large amount of transmitted information

Inactive Publication Date: 2012-07-18
郭丰亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing digital TV set-top box sends the TV program signal into the digital TV set-top box in the form of cable, and outputs it after digital-to-analog conversion. This method is easily interfered by electromagnetic signals, and the transmission volume is small

Method used

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  • Digital television set top box based on LED visible light communication
  • Digital television set top box based on LED visible light communication

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Embodiment Construction

[0011] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0012] see figure 1 , The hardware structure of the embodiment of the present invention includes: optical receiver, digital tuner, quadrature amplitude modulation (QAM) demodulation module, ATM processing unit, MPEG-2 video and audio decoder, audio digital-to-analog (D / A) conversion unit, PAL / NTSC / SECAM decoder,

[0013] Further, the optical receiver includes: a photodetector, a demodulation circuit and a signal output circuit, and the information loaded in the LED light beam received by the optical receiver passes through the photodetector and the demodulation circuit in turn and is output by the signal output circuit.

[0014] The working proc...

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PUM

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Abstract

The invention discloses a digital television set top box based on LED visible light communication, belonging to the field of digital television set top boxes and comprising a digital tuner, a quadrature amplitude modulation (QAM) and demodulation module, an ATM (Asynchronous Transfer Mode) processing unit, an MPEG (Moving Picture Experts Group)-2 video and audio decoder, an audio digital analogy (D / A) conversion unit, a PAL / NTSC / SECAM (Programmable Array Logic / National Television System Committee / Sequential Colour and Memory) decoder and an optical receiver; and an LED visible light communication technology is applied to the digital television set top box so that the wireless communication between a television program signal and the set top box is realized. In such a way, a television signal can be input to the digital television set top box in a wireless way so as to be decoded and output; and the digital television set top box based on LED visible light communication has the advantages of simple structure, higher image definition and better practicability.

Description

technical field [0001] The invention relates to the field of digital TV set-top boxes, in particular to a digital TV set-top box based on LED visible light communication. Background technique [0002] Digital signal TV is widely popularized due to its high-definition and convenient viewing. With the continuous development of digital TV technology and the trial broadcast of digital signals in some areas, during the special period of transition from analog to digital signals, set-top boxes have become a popular choice for users to watch digital TV. An indispensable product for TV. [0003] At present, digital TV set-top boxes watch digital TV programs on analog TVs through demodulation, demultiplexing, decoding and audio coding or through corresponding data analysis modules by receiving digital TV and various data information sent by various transmission media. and various data information. [0004] The existing digital TV set-top box sends the TV program signal into the dig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/41H04N21/436
Inventor 郭丰亮
Owner 郭丰亮
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