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Video and audio transmission device, and optical transmitting and receiving modules thereof

A technology of optical transmitting module and optical receiving module, which is applied in the direction of electromagnetic transmitter, electromagnetic receiver, free space transmission, etc., to achieve the effect of convenient use, low cost and increased flexibility

Active Publication Date: 2014-10-01
ATEN INT CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The optical transmitter module is coupled to the power line

Method used

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  • Video and audio transmission device, and optical transmitting and receiving modules thereof
  • Video and audio transmission device, and optical transmitting and receiving modules thereof
  • Video and audio transmission device, and optical transmitting and receiving modules thereof

Examples

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Embodiment Construction

[0075] A preferred embodiment of the present invention is an audio-video transmission device. In this embodiment, the audio-video transmission device includes a light emitting module and a light receiving module. In fact, the light emitting module can be disposed on a lamp socket or a light bulb; the light receiving module can be any type of portable electronic device, such as a smart phone, a tablet computer or a wireless earphone, but not limited thereto.

[0076] see Figure 1A , Figure 1A A functional block diagram of an embodiment of the light transmitting module TX coupled to the power line PL is shown. Such as Figure 1A As shown, the light emitting module TX includes a front-end circuit 10, a media access control circuit MAC, a DC current generating circuit 12, a voltage-to-current amplifier 14, a current adding circuit 16, a processor 15, a white LED 17, a detection unit 18 and an infrared LED 19. Among them, the front-end circuit 10 and the media access control cir...

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PUM

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Abstract

The invention provides a video and audio transmission device, and the device comprises a power line communication module, an optical transmitting module, and an optical receiving module. The optical transmitting module comprises an independent frequency band signal transmitting unit. The optical receiving module comprises an independent frequency band signal detection unit. The power line communication module supplies data to a power line, and the data and a power line signal are synthesized to be a composite power line signal. The optical transmitting module extracts the data from the composite power line signal and drives an illuminant to emit an optical signal according to the data. The optical receiving module receives the optical signal, restores the optical signal, and converts the optical signal into audio data or image data. When the composite power line signal accords with a specified condition, the independent frequency band signal transmitting unit transmits a wireless signal comprising a synchronizing signal, and the independent frequency band signal detection unit receives the synchronizing signal, so as to achieve the communication synchronization between the optical transmitting and receiving modules.

Description

technical field [0001] The present invention is related to audio-visual transmission, in particular to an audio-visual transmission device capable of effectively integrating Power Line Communication (PLC) technology and Visible Light Communication (Visible Light Communication, VLC) technology and its light emitting module and light receiving module. Background technique [0002] Generally speaking, the power line communication (PLC) technology refers to using existing power lines to transmit data or information by means of digital signal processing. Power line communication technology uses existing low-frequency (50-60Hz) power lines to transmit broadband network messages. Compared with the telephone line used by ADSL, the application of general power line communication uses optical fiber line or cable TV line. The advantage of using power line communication technology is that there is no need to re-lay network lines, and the area covered by power lines is much wider than t...

Claims

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Application Information

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IPC IPC(8): H04B10/116H04B3/54H04L7/04H04B10/50H04B10/60
Inventor 薛兆轩
Owner ATEN INT CO
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