JP3105481U - Wireless repeater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless repeater that enables mutual communication between wireless terminals on different floors without changing the frequency of transmission and reception.
A receiving means for receiving a radio wave, a demodulating means for demodulating a required signal from a signal of the receiving means, first and second signal input terminals for inputting an external signal, First signal adding means for adding the signal input from the signal input terminal and the signal output from the demodulation means, and the signal input from the second signal input terminal and the signal output from the demodulation means. Second signal adding means for adding the signals, first and second signal output terminals for outputting the output signals of the first and second signal adding means to the outside, respectively, and the first and second signal adding terminals. Third signal addition means for adding the first and second signals input from the signal input terminal and the output signal of the demodulation means, and modulation means for modulating the output signal of the third signal addition means, The signal modulated by the modulation means Providing a structure that transmitting means for transmitting as a radio wave.
[Selection diagram] Fig. 1

Description

Detailed description of the invention

  The present invention relates to a wireless repeater used to extend the communication range of a wireless portable terminal, commonly called a portable transceiver.

2. Description of the Related Art In recent years, wireless repeaters have been used in various fields along with expansion of applications of wireless portable terminals.
In particular, a wireless device called a specific low-power wireless device having a narrow communication range is widely used in order to expand the communication range.

Hereinafter, an example of the above-described conventional wireless repeater will be described with reference to the drawings.
FIG. 3 shows a block diagram of a conventional wireless repeater. FIG. 4 is a block diagram showing a case where a plurality of conventional wireless repeaters are used.

  In FIG. 3, reference numeral 1 denotes a receiving antenna, which receives a radio wave of a frequency f radiated from the wireless portable terminal 14. Reference numeral 2 denotes a receiving unit that converts a radio wave received by the receiving antenna 1 into a signal that can be demodulated. A demodulation unit 3 demodulates an output signal of the reception unit 2 to obtain a required signal such as an audio signal. Reference numeral 11 denotes a modulating unit that converts the demodulated signal obtained by the demodulating unit 3 into a transmittable high-frequency signal. Reference numeral 12 denotes a transmitting unit that amplifies the output signal of the demodulating unit 11 and supplies the amplified signal to the transmitting antenna 13.

  In this case, if the transmission frequency is the same as the reception frequency, the radio repeater itself receives the radio wave transmitted by the radio repeater itself, and the operation as the repeater is not established. Transmit at a different frequency F. The transmitting antenna 13 radiates the output of the transmitting means 12 into space as a radio wave.

  Reference numerals 14 and 15 denote wireless portable terminals called portable transceivers, which are mainly used for calls between distant points.

The operation of the wireless repeater configured as described above will be described below.
First, the wireless communication terminal 14 transmits a radio wave whose sound is modulated at the frequency f.

  Next, the receiving antenna 1 receives the radio wave of the frequency f of the wireless terminal 14 and demodulates the sound from the high frequency signal transmitted by the wireless terminal 14 by the receiving means 2 and the demodulating means 3. The demodulated audio signal is modulated by the modulating means 11 into a transmittable high-frequency signal, further amplified by the transmitting means 12, and radiated by the transmitting antenna 13 at a frequency F different from the frequency f received by the receiving antenna. The radio wave radiated from the receiving antenna 13 is received and demodulated by the wireless portable terminal 15 at another location, and the audio signal transmitted by the wireless portable terminal 14 is reproduced.

With this operation, it is possible to extend the communication distance by passing through the wireless repeater, even if the wireless terminal 14 and the wireless terminal 15 are normally in a distance where direct communication is not possible.
FIG. 4 is a block diagram showing a case where a conventional wireless repeater is installed on each floor of a three-story building.

  Exactly the same wireless repeater and portable terminal are used on each floor, and the respective components correspond to the components in FIG. b is displayed with c added to the third floor.

  In FIG. 4, it is assumed that the portable terminal 14b on the second floor transmits voice at the frequency fb. The subsequent operation is exactly the same as the description in FIG.

  The portable terminal 14b can wirelessly transmit voice to the portable terminal 15b via a wireless repeater installed on the second floor. This operation is exactly the same as the operation in FIG.

Issues that the device is trying to solve

  However, in the above-described configuration, the transmission / reception frequency of the wireless portable terminal is different between different floors, and radio waves are difficult to reach. There was a problem that it was not possible to talk between different floors.

  The present invention has been made in view of the above problems, and provides a wireless repeater that allows terminals on different floors to communicate with each other without changing the frequency and enables communication from any floor to any floor.

Means for solving the problem

In order to solve the above problems, the wireless repeater of the present invention, receiving means for receiving a radio wave,
Demodulating means for demodulating a required signal from the signal of the receiving means, a first signal input terminal for inputting an external signal, a signal input from the first signal input terminal and an output signal from the demodulation means Signal adding means for adding a signal from the first signal adding means, a first signal output terminal for outputting an output signal of the first signal adding means to the outside, and a second signal input terminal for inputting a signal from outside When,
A second signal addition unit that adds the signal input from the second signal input terminal and the signal output from the demodulation unit; and a second signal output unit that outputs an output signal of the second signal addition unit to the outside. And a third signal for adding the first signal input from the first signal input terminal, the second signal input from the second signal input terminal, and the output signal of the demodulation means. , A modulating means for modulating the output signal of the third signal adding means, and a transmitting means for transmitting the signal modulated by the modulating means as a radio wave.

  According to the present invention, a plurality of wireless repeaters can be connected in series by the above-described configuration. By connecting the wireless repeaters, the demodulated signal of any one wireless repeater can be all other than the repeater. As a signal for modulation of the wireless repeater. For this reason, communication is possible between portable terminals on floors having different frequencies of radio waves used, and the communicable range is significantly extended.

Hereinafter, embodiments of the present invention will be described based on examples with reference to the drawings. FIG. 1 is a block diagram of a wireless repeater according to an embodiment of the present invention.
In FIG. 1, those given the same reference numerals as those in FIG.

  A first signal input terminal 9 receives a demodulated signal from another wireless repeater. Reference numeral 6 denotes a first adder for adding the signal input from the signal input terminal 9 and the signal output from the demodulation means 3. A first signal output terminal 4 outputs the output signal of the first adder 6 to the outside.

  Reference numeral 5 denotes a second signal input terminal to which a demodulated signal from another wireless repeater is input in the same manner as the first signal input terminal 9. Reference numeral 8 denotes a second adder, which adds the signal input from the signal input terminal 5 and the signal output from the demodulation means 3. A second signal output terminal 10 outputs the output signal of the second adder 8 to the outside.

  Reference numeral 7 denotes a third signal adder, which is a first signal input from the first signal input terminal 9, a second signal input from the second signal input terminal 5, and an output signal of the demodulation means 3. Are added and input to the modulating means 11.

  The operation of the wireless repeater configured as described above will be described below with reference to FIGS.

FIG. 1 shows a block diagram of an embodiment of the present invention.
When the wireless repeater of the present invention is operated independently, nothing is connected to the four input / output terminals 4, 5, 9, and 10, so that no signal is input from the input terminal to be externally connected. Similarly, no signal is output to the output terminal. The operation when the wireless repeater of the present invention is operated alone is exactly the same as the conventional embodiment.

  FIG. 2 is a block diagram showing a case where the wireless repeater of the present invention is installed on each floor of a three-story building.

  Exactly the same wireless repeater and wireless portable terminal are used on each floor, and the corresponding components correspond to the components in FIG. Is displayed with b added, and on the third floor, c is added.

In FIG. 2, it is assumed that the wireless portable terminal 14b on the second floor transmits voice at the frequency fb.
The receiving antenna 1b receives the radio wave of the frequency fb of the wireless portable terminal 14b, and demodulates the sound from the high frequency signal transmitted by the wireless terminal 14 by the receiving means 2b and the demodulating means 3b. The demodulated audio signal is input to a third adder 7b, further modulated into a high-frequency signal that can be transmitted by a modulator 11b, further amplified by a transmitter 12b, and radiated at a frequency Fb by a transmission antenna 13b. The radio wave radiated from the receiving antenna 13b is received and demodulated by the wireless portable terminal 15b at another location, and the audio signal transmitted by the wireless portable terminal 14b is reproduced.

  In this way, the portable terminal 14b can wirelessly transmit voice to the portable terminal 15b via the wireless repeater installed on the second floor. This operation is exactly the same as the operation of the conventional example in FIG.

  Next, the audio signal demodulated by the demodulation means 3b is input to the adder 6b, and is input to the signal input terminal 9c of the wireless relay on the third floor via the output terminal 4b. The audio signal input to the signal input terminal 9c of the wireless relay on the third floor is input to the modulating unit 11c via the third adder 7c of the same wireless relay, and is wirelessly transmitted by the transmitting unit 12c and the antenna 13c. It becomes a radio wave and is radiated into space. The radio wave radiated from the transmitting antenna 13c can be received by the wireless terminal 15c on the third floor, and as a result, the voice signal of the wireless terminal 14b on the second floor can be transmitted to the wireless terminal 15c on the third floor.

  Next, the audio signal demodulated by the demodulation means 3b is input to the adder 8b, and is input to the signal input terminal 5a of the wireless relay on the first floor via the output terminal 10b. The audio signal input to the signal input terminal 5a of the first-floor wireless repeater is input to the modulating means 11a via the third adder 7a of the same wireless repeater, and is wirelessly transmitted by the transmitting means 12a and the antenna 13a. It becomes a radio wave and is radiated into space. The radio wave radiated from the transmitting antenna 13a can be received by the wireless terminal 15a on the first floor, and as a result, the voice signal of the wireless terminal 14b on the second floor can be transmitted to the wireless terminal 15a on the first floor.

  Even when the first floor wireless terminal 14a transmits an audio signal at the frequency fa, the voice signal can be transmitted to the second floor wireless terminal 15b according to the same principle. The audio signal output to the first signal output terminal 4b via the first adder 6b of the second-floor wireless repeater is input to the first signal input terminal 9c of the third-floor wireless repeater. Therefore, the voice signal of the wireless terminal 14a on the first floor is also transmitted to the wireless terminal 15c on the third floor. Further, by connecting the wireless repeater of the present invention to the fourth floor and the fifth floor, the voice signal of the wireless terminal 14a on the first floor can be simultaneously transmitted to the wireless terminals on the second and higher floors.

  Even when the wireless terminal 14c on the third floor transmits an audio signal at the frequency fc, it can be transmitted to the wireless terminal 15b on the second floor according to the same principle. The audio signal output to the second signal output terminal 10b via the second adder 8b of the second-floor wireless repeater is input to the second signal input terminal 5a of the first-floor wireless repeater. Therefore, the audio signal of the wireless terminal 14c on the third floor is also transmitted to the wireless terminal 15a on the first floor. Furthermore, by connecting the wireless repeater of the present invention to the first basement floor and the second basement floor, the voice signals of the three wireless terminals 14c can be simultaneously transmitted to the wireless terminals on the first and lower floors.

  In this embodiment, a three-story building has been described as an example. However, if the signal degradation due to the connection is ignored, the connection can be made infinitely, and the floor of the floor where the connected wireless repeater of the present invention is installed can be connected. All terminals can communicate with each other.

  As described above, according to the present embodiment, receiving means for receiving a radio wave, demodulating means for demodulating a required signal from the signal of the receiving means, and a first signal input terminal for inputting an external signal And a first signal adding means for adding a signal input from the first signal input terminal and a signal output from the demodulating means, and outputting an output signal of the first signal adding means to the outside. A first signal output terminal, a second signal input terminal for inputting an external signal, and a second signal for adding the signal input from the second signal input terminal and the signal output from the demodulation means. Signal addition means, a second signal output terminal for outputting the output signal of the second signal addition means to the outside, a first signal input from the first signal input terminal and the second signal The second signal input from the input terminal and the above demodulation Third signal adding means for adding the output signal of the stage, modulating means for modulating the output signal of the third signal adding means, and transmitting means for transmitting the signal modulated by the modulating means as a radio wave. By providing the configuration, it is possible to connect a plurality of wireless repeaters in series, and by linking, the demodulated signal of any one wireless repeater can be connected to all other wireless repeaters other than the repeater. It can be supplied as a signal for modulation of a repeater. For this reason, wireless communication is possible between portable terminals on floors having different frequencies of radio waves used, and the communicable range is significantly extended.

  Although the signal transmitted in the first embodiment is an audio signal, it goes without saying that a data signal has the same effect.

The effect of the invention

  As described above, according to the present invention, receiving means for receiving a radio wave, demodulating means for demodulating a required signal from the signal of the receiving means, and a first signal input terminal for inputting an external signal, First signal addition means for adding a signal input from the first signal input terminal and a signal output from the demodulation means, and a first signal output means for outputting an output signal of the first signal addition means to the outside A signal output terminal, a second signal input terminal for inputting an external signal, and a second signal for adding the signal input from the second signal input terminal and the signal output from the demodulation means. Addition means, a second signal output terminal for outputting the output signal of the second signal addition means to the outside, a first signal input from the first signal input terminal and the second signal input terminal The second signal input from the A third signal adding means for adding the force signal, a modulating means for modulating an output signal of the third signal adding means, and a transmitting means for transmitting a signal modulated by the modulating means as a radio wave. By providing, it is possible to connect a plurality of wireless repeaters in series, and by connecting, the demodulated signal of any one wireless repeater can be connected to all other wireless repeaters other than the repeater. Can be supplied as a modulation signal. For this reason, wireless communication is possible between portable terminals on floors having different frequencies of radio waves used, and the communicable range is significantly extended.

  The effect of the wireless repeater of the present invention, which enables communication in a range where conventional two-way communication was not possible, with a very simple circuit configuration, is extremely large.

  FIG. 3 is a block diagram of the wireless repeater according to the embodiment of the present invention.   FIG. 3 is a block diagram showing a case where three wireless repeaters according to the embodiment of the present invention are connected and installed in a three-story building.   It is a block diagram of the conventional wireless repeater.   It is a block diagram at the time of installing three conventional wireless repeaters in a three-story building.

Explanation of reference numerals

2 receiving means 3 demodulating means 9 first signal input terminal 6 first signal adder 4 first signal output terminal 5 second signal input terminal 8 second signal adder 10 second signal output terminal 7 Three signal adders 11 Modulation means 12 Transmission means

Claims (1)

  Receiving means (2) for receiving a radio wave, demodulating means (3) for demodulating a necessary signal such as an audio signal from the signal of the receiving means, and a first signal input terminal (9) for inputting an external signal. ), First signal addition means (6) for adding the signal input from the first signal input terminal (9) and the signal output from the demodulation means (3), and the first signal A first signal output terminal (4) for outputting the output signal of the adding means (6) to the outside, a second signal input terminal (5) for receiving a signal from the outside, and the second signal input terminal ( 5) a second signal adding means (8) for adding the signal input from the demodulating means (3) and the signal output from the demodulating means (3), and the output signal of the second signal adding means (8) to the outside. The second signal output terminal (10) for output and the first signal input terminal (9) Third signal adding means (7) for adding the first signal and the second signal input from the second signal input terminal (5) to the output signal of the demodulating means (3); A modulating means (11) for modulating an output signal of the third signal adding means (7); and a transmitting means (12) for transmitting a signal modulated by the modulating means (11) as a radio wave. And a wireless repeater.

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