KR20100060721A - System for receiving satellite broadcasting in tunnel - Google Patents

Abstract

PURPOSE: A satellite broadcasting receiving system inexpensively embodies the satellite broadcasting receiving system in tunnel through the lighting equipment is provided to activate a broadcasting field, a travel and leisure field and electronic apparatus field. CONSTITUTION: A digital signal converter(120) changes the digital signal. A PLC(Power Line Communication) and Ethernet communications unit(130) generates the lamp through the brightness variation of the lamp(140) within the tunnel. An optical detector performs the conversion of the optical signal to the detection of the optical signal and electric signal. An amplification and restoration unit performs amplification and reconstitution of the electric signal. A terminal outputs broadcast with the signal of the restoration means and amplification.

Description

System for receiving satellite broadcasting in tunnel}

The present invention relates to a satellite broadcasting reception system, and more particularly, to a system for enabling stable reception of satellite broadcasting at a low cost in a tunnel.

Recently, due to the development of broadcasting and communication technology, there are many demanders who want to be able to listen to or watch broadcasts anywhere. However, the reality is that signal blocking in portable and mobile receivers occurs due to physical obstacles between the transmitter and the receiver. Typically, when mobile receivers pass through a tunnel, they encounter physical obstacles that interfere with satellite signal reception. In order to solve this problem, a repeater such as a gap filler is installed to eliminate the shadow area such as a tunnel, but in the case of satellite communication, the area covered by one gap filler is small due to the short wavelength band used and the gap filler. It is pointed out that a repeater such as this is relatively expensive.

Accordingly, an object of the present invention is to provide a satellite broadcasting reception system in a tunnel that can be implemented relatively inexpensively by using existing lighting equipment already installed in the entire tunnel.

The present invention for solving the above technical problem relates to a satellite broadcasting reception system in a tunnel,

An antenna installed outside the tunnel to receive satellite broadcast signals;

Digital signal conversion means for digitizing the satellite broadcast signal received from the antenna;

Power line communication and Ethernet communication means for transmitting the converted digital signal to an illumination lamp installed in the tunnel to generate an optical signal in the illumination lamp through a change in brightness of the illumination lamp;

A photodetector installed at a receiver side for detecting the optical signal and converting the optical signal into an electrical signal;

Amplifying and restoring means for amplifying and restoring the electrical signal and transferring the electrical signal to an output device;

A terminal for outputting a broadcast using the signal that has passed through the amplification and restoration means;

Characterized in having a.

At this time, it is preferable that the illumination lamp is an LED lamp.

According to the present invention, it is possible to implement a satellite broadcasting receiving system relatively inexpensively by using existing lighting equipment already installed in the entire tunnel without installing additional expensive repeaters. Activation is expected.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are only presented to understand the content of the present invention, and those skilled in the art will be capable of many modifications within the technical spirit of the present invention. Therefore, the scope of the present invention should not be construed as being limited to these examples.

1 is a schematic configuration diagram of a satellite broadcasting reception system in a tunnel according to an embodiment of the present invention. Referring to FIG. 1, in the satellite broadcasting receiving system of the present invention, an antenna 110, a digital signal converting means 120, power line communication / Ethernet communication means 130, an illumination lamp 140, and a receiving side 205 are provided. Included. The dish-shaped satellite antenna 110 is installed outside the tunnel 200 to smoothly receive satellite broadcast signals. The satellite broadcast signal (analog signal) received from the satellite antenna 110 passes through a digital signal converting means 120 for digitizing and modulating it. Here, the converted digital signal is transmitted to the driving circuit (not shown) of the lighting lamp 140 installed throughout the tunnel 200 through the power line communication and the Ethernet communication means 130, It causes a change in brightness, which generates an optical signal in the illumination lamp 140. The change of the brightness of the lamp proceeds very fast, and the change of the lamp is not so large that the naked eye cannot recognize the change of the brightness of the lamp. As the lighting lamp 140, any one may be used, but it is preferable to use an LED lamp having a low power consumption and a very long life. The optical signal emitted from the illumination lamp 140 is received by the receiving side 205 including the photodetector 210, the amplification / restoration unit 220, and the terminal 230. A representative example of the terminal 230 is a TV for watching satellite broadcasts. The photodetector 210 detects an optical signal from the lighting lamp 140 and converts the optical signal into an electrical signal, and the amplification / restoration unit 220 amplifies and restores the optical signal to the terminal 230 and transmits the terminal signal to the terminal 230. ) Outputs a broadcast using this. As described above, the components included in the receiver 205 are the same as those of the receiver of general visible light communication, and thus, detailed description thereof will be omitted. The receiving side 205 may be installed in a vehicle such as a moving bus or a passenger car. In this case, the photodetector 210 is installed at an upper portion of the vehicle to smoothly receive an optical signal from the lighting lamp 140 without interruption. It is good.

1 is a schematic configuration diagram of a satellite broadcasting reception system in a tunnel according to an embodiment of the present invention.

Explanation of reference numerals for main parts of the drawings

110: satellite antenna

120: digital signal conversion means

130: power line communication / Ethernet communication means

140: lighting lamp

200: tunnel

205: receiving side

210: photodetector

220: amplification / restore means

230: terminal

Claims (3)

An antenna installed outside the tunnel to receive satellite broadcast signals; Digital signal conversion means for digitizing the satellite broadcast signal received from the antenna; Power line communication and Ethernet communication means for transmitting the converted digital signal to an illumination lamp installed in the tunnel to generate an optical signal in the illumination lamp through a change in brightness of the illumination lamp; A photodetector installed at a receiver side for detecting the optical signal and converting the optical signal into an electrical signal; Amplifying and restoring means for amplifying and restoring the electrical signal and transferring the electrical signal to an output device; A terminal for outputting a broadcast using the signal that has passed through the amplification and restoration means; The satellite broadcasting reception system in a tunnel. The system of claim 1, wherein the illumination lamp is an LED lamp. The satellite broadcasting reception system according to claim 1, wherein the speed and the width of the brightness change of the illumination lamp are not visually discernible.

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