JP2000324027A - Radio rebroadcast system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily cope with reduction in the number of broadcast signals to eliminate the need for large modification of the configuration. SOLUTION: The system is provided with a reception section 31 that receives a radio broadcast signal, a plurality of transmission sections 45, 46, 47 that transmit the radio broadcast signal received by the reception section 31, an output mixer section 48 that includes a plurality of T connectors and sequentially mixes the radio broadcast signals outputted from a plurality of the transmission sections 45, 46, 47 and an inductive antenna 72 that emits the radio broadcast signal mixed by the output mixer section 48 including a plurality of the T connectors.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio rebroadcasting system installed in a blind zone of radio broadcasting such as in a tunnel.

[0002]

2. Description of the Related Art In a conventional radio rebroadcast system, AM
Is received by the receiving section and guided to the AM radio rebroadcasting apparatus shown in FIG. Here, the received radio broadcast signal is transmitted to a plurality of transmitting units 201-1 to 201-n, 202-1 to 202- as shown in FIG.
n. Each of the transmission units 201-1 to 201-n, 2
02-1 to 202-n respectively include a transmitter 203-1.
To 203-n, 204-1 to 204-n, and filter 2
05-1 to 205-n and 206-1 to 206-n are provided to generate transmission signals and remove harmonics.

[0003] Output signals of the transmitters 201-1 to 201-n are supplied to a mixer 207, where
The 2-n output signals are provided to a mixer 208 where they are mixed. The outputs of the mixers 207 and 208 are mixed in a mixer 209 and sent to an induction antenna installed in a tunnel or the like. These mixers 207, 20
8 and 209 are provided in the output mixing section in the AM radio rebroadcasting apparatus of FIG.

[0004]

However, since the number n of input terminals of the mixers 207 and 208 is a fixed value, the number of broadcast signals corresponding to a station increases, for example, when a broadcast station is opened. Every time the number n is exceeded, a new mixer having the number n of input terminals must be separately prepared, resulting in an increase in the size of the configuration. In addition, not all input terminals of the new mixer are used, and However, there is a problem that various components are generated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the conventional radio rebroadcasting system, and has an object to increase the number of broadcast signals corresponding to a station by opening a broadcast station. It is an object of the present invention to provide a radio rebroadcasting system which can easily cope with a case or a case where the number of broadcast signals is reduced and does not require a large change in configuration. It is another object of the present invention to provide a radio rebroadcast system capable of controlling a radio broadcast signal by a simple operation in an easy-to-understand input environment.

[0006]

A radio rebroadcasting system according to the present invention comprises: a receiving section for receiving a radio broadcast signal; a plurality of transmitting sections for transmitting a radio broadcast signal received by the receiving section; A plurality of T-type connectors for sequentially mixing the radio broadcast signals output from the transmission units, and an induction antenna for emitting a radio broadcast signal mixed by the plurality of T-type connectors.
According to this configuration, it is sufficient to increase or decrease one T-type connector in response to increase or decrease of one transmission unit, and it is not necessary to largely change the configuration.

[0007] A radio rebroadcasting system according to the present invention includes a receiving unit for receiving a radio broadcast signal, a transmitting unit for transmitting the radio broadcast signal received by the receiving unit, and a radio broadcast signal output from the transmitting unit. An antenna for emitting radio waves, control means for controlling the radio broadcast signal, an input device for inputting to the control means, a display device for displaying information, and input item information from the input device to the display device. And a touch panel having a display control means for displaying. This makes it possible to appropriately control the radio broadcast signal only by performing an operation of inputting the input item information displayed on the touch panel.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A radio rebroadcasting system according to the present invention will be described below with reference to the accompanying drawings. In each drawing, the same components are denoted by the same reference numerals, and redundant description will be omitted. FIG. 1 shows a configuration diagram of a radio rebroadcasting system according to the present invention. FM room 1
Broadcasting frame 2, AM receiving frame 3, AM broadcasting frame 4, Withstand voltage transformer 5
Is provided.

The FM broadcast frame 2 includes a power supply section 21 for receiving the output of the withstand voltage transformer 5 and supplying power, an FM antenna 61,
The reception distribution unit 22 and the reception distribution unit 2 that take in radio waves from 62
2, an FM receiving unit 23 that obtains an FM broadcast signal from the output of the second unit, an FM modulating unit 24 that performs FM modulation of an interrupt audio signal, an FM transmitting unit 25 that transmits an output signal of the FM modulating unit 24 or an output signal of the FM receiving unit 23, 26, an FM output mixer 27 including a fixed attenuator for generating a predetermined attenuation and mixing output signals of the FM transmitters 25 and 26 is provided.

The AM receiving frame 3 has AM antennas 63, 6
Receiving unit 31 that takes in radio waves from 4, 65 and obtains an AM broadcast signal, and listening unit 32 that enables monitoring of the received broadcast signal
Is provided.

The AM broadcast frame 4 receives a control signal from the construction office 80 via the line 6 or receives a control signal from the construction office 80 via the line 6 to receive power from the output of the withstand voltage transformer 5 or a remote monitoring unit. A control unit 42, an operation control unit 43 for controlling interruption of rebroadcasting and broadcasting, a switching unit 44 for switching between an interruption signal and a broadcasting signal, and performing amplification, an interruption signal transmitted from the broadcasting switching unit 44 or Transmitters 45 to 47 for transmitting broadcast signals, transmitter 45
Output mixing unit 48 that mixes the outputs of .about.47, and induction wire disconnection detection unit 4 that detects disconnection of the connected induction antenna 72.
9 are provided. In the above, the transmission units 45 to 47
Does not mean three circuits, but indicates a plurality of circuits.

The tunnel 7 has a leaky coaxial cable 7 for receiving an output of the FM broadcast frame 2 and emitting an FM broadcast signal.
1 and a parallel two-wire induction antenna 72 for receiving an output of the AM broadcast frame 4 and emitting an AM broadcast signal.

The construction office 80 has a broadcast control frame 81,
An operation console 82 connected to this is provided. The broadcast control frame 81 is connected to the AM broadcast frame 4 via a line. The broadcast control frame 81 is provided with an operation control unit 83 including a touch panel device 84, and can transmit a control signal to the distant monitoring control unit 42 of the AM broadcast frame 4 by input from the touch panel device 84. Monitoring control unit 42
The image based on the status notification signal sent from the device is displayed on the display device of the touch panel device 84. The console 82 is also provided with a touch panel device 85 having the same configuration as the above touch panel device 84, and is controlled by the input from the touch panel device 85 to the remote monitoring control unit 42 of the AM broadcast frame 4 via the broadcast control frame 81. A signal can be sent, and the status notification signal sent from the distant monitoring control unit 42 reaches the touch panel device 85 via the broadcast control frame 81, and a display based on the signal is made.

AM in the above radio rebroadcast system
FIG. 2 shows a panel layout of the broadcast frame 4. This AM broadcast frame 4
In FIG. 1, the transmitting unit 45 in FIG.
-3 panel, which is arranged at the top.
The panel of the transmitting unit 46 in FIG.
The panel of the operation control unit 43 is arranged in the lower stage of the panel of -3, and in the next stage. The operation control unit 43 includes:
A microphone M and a touch panel device 43A are provided.

At the lower stage of the operation control section 43, a panel of a broadcast switching section 44 for switching between an interrupt signal and a broadcast signal and performing amplification is provided. A panel of the distant monitoring control unit 42 is arranged below the broadcast switching unit 44, and a panel of the transmission unit 47 is arranged below the panel.
In the lower part of the panel of the transmitting part 47, a guide line disconnection detecting part 49 is arranged, and further below that, the panel of the power source part 41 is arranged. The lower part of the panel of the power supply part 41 is provided with the panel of the terminal part 40 to which the line 6 and the like in FIG. 1 are connected, and the lowermost part is provided with a blank panel which is not currently used. The output mixer 48 shown in FIG.
Since it is constituted by a mold connector, it does not appear in FIG.

FIG. 3 shows a connection relationship of the transmission unit by the output mixer 48 constituted by a T-type connector. Here, the plurality of transmission units are shown as 45-1 to 45-n. Transmitters 45-1 to 45-n include transmitters 51-1 to 51-n and filter 52 with mixing function, respectively.
-1 to 52-n are provided. The filters 52-1 to 52-n with the mixing function are the filters 205 shown in FIG.
-1 to 205-n and 206-1 to 206-n only remove harmonic components, whereas the bandpass filters pass approximately ± 20 kHz around the frequency of each broadcast signal, It has a function of removing frequency components of broadcast signals from other transmitters and enabling signal synthesis.

On the output side of the transmitting units 45-1 to 45-n,
T-type connectors 50-1 to 50-n via connection cables
Are connected, and the T-type connectors 50-1 to 50-n receive the output of the preceding T-type connector via a connection cable, and receive broadcast signals arriving from the directly connected transmitters 45-1 to 45-n. Mix and send to the next stage via the connecting cable. The output of the final stage T-type connector 50-n is connected to a parallel two-wire induction antenna 72.

The operation control section 43 is provided with a microphone M for performing an emergency broadcast and the like, and a touch panel device 43A having, for example, a touch panel type input device and a display device. Then, when the system starts up, a menu is displayed on the display device 8 as shown in FIG. Of these, if you touch the display surface of the "broadcast monitor",
As shown in FIG. 5, the name of each broadcasting station is displayed, and when any desired broadcasting station is touched, the corresponding broadcasting can be monitored from the listening unit 32 by, for example, a speaker. FIG. 6 shows another embodiment of the screen displayed when the display surface of the “broadcast monitor” on the display device 8 is touched, and the broadcast provided for the up lane and the down lane of the tunnel 7 is shown. , The name of each broadcasting station is displayed. Also in this example, when any desired broadcast station is touched, the corresponding broadcast can be monitored from the listening unit 32 using, for example, a speaker.

Further, in the menu display on the display device 8, when the display surface of "interruption broadcast" is touched, FIG.
As shown in, a screen for shifting to interrupt broadcasting is displayed, and when the display surface of “interruption broadcasting” and the display surface of “talk” on the display device 8 are touched, the interruption broadcasting using the microphone M is performed. Can be performed, and the occurrence of an accident or a change in weather conditions can be notified. FIG. 8 shows another embodiment of a screen for shifting to interrupt broadcasting when the display surface of “interrupt broadcasting” is touched in the display of the menu on the display device 8, where “up” and “up” are displayed. By touching any one of the display surface of “down” and the display surface of “talk”, an interruption broadcast using the microphone M can be performed. In each of the display states of FIGS. 7 and 8,
When the display surface of "cancel" is touched on the display device 8, the interruption broadcast is ended.

The touch panel devices 84 and 85 in the construction office 80 can also perform the same control and display as the touch panel device 43, and can perform an interruption broadcast or the like using the microphone M. Broadcast contents can be monitored by a listening part (not shown). The touch panel devices 84 and 85 and the touch panel device 43
Is provided with a display unit, an input device, and a control unit such as a built-in computer, in which a program capable of performing control and display according to each installation location is set. That is, the touch panel devices 84 and 8
Although the hardware of the touch panel device 5 and the touch panel device 43 are the same, the program is changed by a ROM or the like, the menu is displayed according to the installation location, and the necessary control and display are performed by selecting a menu item or button to select it. Can be performed. In other words, conventionally, a frame having specific keys and buttons for each installation location was required, such as a frame installed in a construction office 80, a frame installed in a tunnel room, and the like. According to the device, it is possible to input and display the key arrangement and the button arrangement that match the respective installation locations such as the construction office 80 and the tunnel room only by changing the software.

In the above embodiment, the transmitting units 45-1 to 45-1
Although the connection between the 45-n and the T-type connectors 50-1 to 50-n was made via the connection cable, for example, as shown in FIG. , The broadcast signal is transmitted directly from the transmitting section 45 to the T-type connector 5
0 may be output. In this case, no connection cable is required. Further, as shown in FIG. 10, a T-type connector 50 is buried in the housing of the transmitting section 45, and a connector 91 for extending a connection cable to an adjacent transmitting section,
92 is embedded in the housing and connected to the T-type connector 50.
According to this configuration, it is possible to save space without the connector protruding outside the housing, and it is possible to make the frame smaller than in other examples.

[0022]

As described above, according to the radio rebroadcasting system of the present invention, the radio broadcast signals output from the plurality of transmitting units for transmitting the radio broadcast signals are sequentially mixed by the plurality of T-type connectors. Since the configuration is adopted, one T-type connector may be increased or decreased in response to an increase or decrease of one transmission unit, and there is no need to largely change the configuration.
The structure can be reduced in size. Further, according to the radio rebroadcasting system according to the present invention, an input device that performs input to a control unit that controls a radio broadcast signal,
A touch panel including a display device for displaying information and display control means for displaying input item information from the input device on the display device, and only performing an operation of inputting the input item information to be displayed This makes it possible to appropriately control the radio broadcast signal.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a radio rebroadcast system according to the present invention.

FIG. 2 is a front view of an AM broadcast frame of the radio rebroadcasting system according to the present invention.

FIG. 3 is a diagram showing a configuration for mixing outputs of a transmission unit in the radio rebroadcasting system according to the present invention.

FIG. 4 is a diagram showing a display example of an operation control unit in the radio rebroadcasting system according to the present invention.

FIG. 5 is a diagram showing a display example of an operation control unit in the radio rebroadcasting system according to the present invention.

FIG. 6 is a diagram showing a display example of an operation control unit in the radio rebroadcasting system according to the present invention.

FIG. 7 is a diagram showing a display example of an operation control unit in the radio rebroadcasting system according to the present invention.

FIG. 8 is a diagram showing a display example of an operation control unit in the radio rebroadcasting system according to the present invention.

FIG. 9 is a diagram showing another configuration example of mixing outputs of a transmission unit in the radio rebroadcasting system according to the present invention.

FIG. 10 is a diagram showing another configuration example of mixing outputs of a transmission unit in the radio rebroadcasting system according to the present invention.

FIG. 11 is a front view of an AM broadcast frame of a conventional radio rebroadcasting system.

FIG. 12 is a diagram showing a configuration for mixing outputs of a transmission unit in a conventional radio rebroadcast system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Tunnel electric room 2 FM broadcast frame 3 AM reception frame 4 AM broadcast frame 7 Tunnel 42 Telemetry monitoring control part 43 Operation control part 44 Broadcast switching part 45, 45-1 to 45-n, 46, 47 Transmission part 50, 50 -1 to 50-n T-type connector 51-1 to 51-n transmitter 52-1 to 52-n filter with mixing function 81 broadcast control frame 82 console 83 operation control unit 43A, 84;
85 Touch panel device

Continuing from the front page (72) Inventor Osamu Hayashida 3-1-1 Asahigaoka, Hino-shi, Tokyo Inside the Toshiba Hino Plant Co., Ltd. (72) Inventor Isao Sekino 1-3-1 Asahigaoka, Hino-shi, Tokyo Toshiba Tsushin System Engineering Co., Ltd. (72) Inventor Hideaki Kawase 3-1-1 Asahigaoka, Hino-shi, Tokyo Toshiba Communication Systems Engineering Co., Ltd. F-term (reference) 5K012 AA06 AB02 AB06 AB17 AC02 AC05 AC13 BA01 5K072 AA30 BB14 CC32 EE00 GG01 GG12 GG13 GG14

Claims (7)

[Claims] 1. A receiving unit for receiving a radio broadcast signal, a plurality of transmitting units for transmitting a radio broadcast signal received by the receiving unit, and a radio broadcast signal output from the plurality of transmitting units are sequentially mixed. A radio rebroadcasting system comprising: a plurality of T-type connectors; and an induction antenna for emitting a radio broadcast signal mixed by the plurality of T-type connectors. 2. The radio rebroadcasting system according to claim 1, wherein a radio broadcast signal is supplied to the T-type connector from the transmission unit via a cable. 3. The radio rebroadcasting system according to claim 1, wherein a T-type connector is attached to a housing of the transmitting unit, and a radio broadcast signal is supplied from the transmitting unit to the T-type connector. . 4. The radio rebroadcast according to claim 1, wherein a T-type connector is buried inside a housing of the transmission unit, and a radio broadcast signal is given from the transmission unit to the T-type connector. system. 5. A receiving unit for receiving a radio broadcast signal, a transmitting unit for transmitting a radio broadcast signal received by the receiving unit, an induction antenna for emitting a radio broadcast signal output from the transmitting unit, Control means for controlling a radio broadcast signal; an input device for inputting to the control means; a display device for displaying information; and a display control means for displaying input item information from the input device on the display device. A radio rebroadcasting system comprising: a touch panel; 6. The radio rebroadcasting system according to claim 5, further comprising a monitor for monitoring based on the radio broadcast signal based on control by the controller. 7. The radio rebroadcasting system according to claim 5, further comprising an interruption broadcasting unit for transmitting an interruption broadcasting signal to the radio broadcasting signal based on control by the control unit. system.