JPH11177452A - Satellite signal distributer and shared reception system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distributor and reception system where signals from a CS antenna which receives vertically and horizontally polarized signals and signals from other reception antennas (VHF, UHF, BS or the like) are sent to plural terminals through a single cable. SOLUTION: VU/BS signals inputted to an input terminal 22I are respectively mixed with vertically and horizontally polarized signals received at input terminals 22v, 22h, and distributed into four outputs at distribution circuits 28v, 28h, and given to changeover circuit 34a-34d. The changeover circuits 34a-34d select any of the vertically and horizontally polarized signals corresponding to changeover signals (11V or 15V) from corresponding output terminals 24a-24d and output the selected signal from output terminals 24a-24d. Furthermore, polarized wave switching signals are synthesized for each voltage at a voltage synthesizer section 30, and the synthesized signal is fed to a reception section corresponding to a CS antenna 2. A power supply signal generated by a power supply device 16 is fed to a booster 10, and a BS antenna 8 which receives the UV/BS signal via a distributor 20 activates the booster 10 and the BS antenna 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for distributing a reception signal from a satellite reception antenna for receiving a radio wave composed of two kinds of polarizations transmitted from a communication satellite for each polarization to a plurality of terminals. The present invention relates to a satellite signal distributor suitable for the present invention and a joint receiving system using the distributor.

[0002]

2. Description of the Related Art Conventionally, two types of polarized waves that are orthogonal or intersecting with each other, such as vertically polarized waves and horizontally polarized waves, or right-handed circularly polarized waves and left-handed circularly polarized waves. Communication satellites that simultaneously transmit radio waves consisting of A satellite receiving antenna (so-called CS antenna) for receiving radio waves transmitted from a communication satellite of this type generally receives radio waves of each polarization individually and converts each polarization signal into
Each is converted into a reception signal of a predetermined frequency band and output.

When transmitting a reception signal from this type of CS antenna to a terminal side, an output terminal for outputting a polarization signal provided in a receiving unit of the CS antenna is used for transmitting a reception signal. One cable was connected at a time, and these two cables were routed to the terminal side. Also, one CS
When a received signal from an antenna is used by a plurality of terminals, a splitter is provided in the middle of two cables drawn from the CS antenna, and two types of polarized signals distributed by each splitter are separated. , Via a cable to the terminal.

For this reason, conventionally, in order to utilize a satellite signal received using this type of CS antenna (ie, to enjoy broadcasting using a communication satellite), two cables for each polarization must be wired. In addition, two terminals for extracting the received signal must be installed in each room on the terminal side,
Indoor wiring work was extremely troublesome.

Further, for example, when the CS antenna receives radio waves of two orthogonal polarizations consisting of vertical polarization and horizontal polarization, a tuner (so-called CS tuner) provided on the terminal side wants to receive a vertical polarization signal. Sometimes, a DC voltage signal (generally 11 V) for receiving vertically polarized waves is supplied from an input terminal to which a reception signal from the antenna is input via a cable to the antenna side.
To output a horizontal polarization signal, and output a DC voltage signal (generally 15 V) for horizontal polarization reception from the input terminal to the antenna side.
Input the received signal of each polarization to S tuner as it is
Since the tuner cannot select the received signal, the terminal receives the polarization switching signal (11 V or 15 V) from the CS tuner and inputs a vertical polarization signal to the CS tuner or a horizontal polarization signal. There is also a problem that it is necessary to separately provide a switch for switching whether to input a wave signal.

[0006] Further, on each terminal side where a CS tuner is installed, broadcasting (C) based on a signal received from a CS antenna is performed.
In addition to S-broadcast), built-in tuners that support TV broadcasts (VHF broadcast, UHF broadcast) and TV broadcasts using broadcast satellites (BS broadcast) can be received. It is common to install a television receiver (or externally attached). Conventionally, such a television receiver is provided with a receiving antenna (VHF antenna, UHF antenna, BS antenna) for receiving television broadcasting other than CS broadcasting. ), A cable different from the cable transmitting the received signal from the CS antenna had to be provided separately. For this reason, the CS antenna and another broadcast receiving antenna (V
HF antenna, UHF antenna, BS antenna), in order to transmit the received signals from each of these antennas to the terminal side, two for the CS antenna and two for the other antennas At least one,
As described above, three or more cables must be routed, and there is a problem that wiring work is extremely troublesome.

The present invention has been made in view of such a problem, and a receiving signal from a CS antenna that receives radio waves having two kinds of polarized waves and a receiving antenna other than the CS antenna (VHF antenna, UHF antenna, BS It is an object of the present invention to provide a satellite signal distributor and a joint receiving system that can transmit a signal received from an antenna or the like to a plurality of terminals using a single cable.

[0008]

Means for Solving the Problems and Effects of the Invention The invention according to claim 1 which has been made to achieve the above object,
A satellite receiving antenna having a receiving unit that receives radio waves composed of two types of polarizations transmitted from a communication satellite for each polarization, converts each polarization signal into a reception signal in a predetermined frequency band, and outputs the reception signal. A satellite signal distributor connected to distribute a reception signal from the reception unit into a plurality of parts and transmit the received signal to a terminal side, for inputting a first polarization signal and a second polarization signal from the reception unit, respectively; A pair of input terminals, each of the polarization signals input to the pair of input terminals, respectively, a pair of distribution circuits to distribute a plurality, and a plurality of output terminals corresponding to the number of signal distribution of the distribution circuit, Each of the output terminals is provided with a first polarization signal and a second polarization signal distributed by each of the distribution circuits, and an output terminal from the terminal side is selected from the two types of polarization signals. Selects a polarization signal corresponding to the polarization switching signal input to the A switching circuit for outputting a signal or a second polarization signal from an output terminal to a terminal; and a power supply to a receiving unit of the satellite receiving antenna from a polarization switching signal input from at least one of the output terminals to the terminal. A receiving unit power supply unit for generating a supply signal and outputting the generated signal to the receiving unit side from each of the input terminals; and a second input for inputting a second reception signal from a second reception antenna different from the satellite reception antenna Terminal, and a second received signal input to the second input terminal is mixed with the first polarization signal and the second polarization signal, and the first polarization signal or the second polarization signal is output from each of the output terminals. Second reception signal mixing means for outputting the signal to a terminal together with a signal, a power reception terminal for receiving a second power supply signal for supplying power to the second reception antenna side device from the second input terminal, and the power reception terminal Power supply input to the No. and characterized by comprising a second feed means for output to the second receiving antenna side from the second input terminal.

In the satellite signal distributor according to the present invention having the above-described configuration, first, two types of polarization signals output from the receiving section of the satellite receiving antenna are input to the corresponding input terminals. The first polarization signal and the second polarization signal are divided into a plurality of parts by a distribution circuit connected to each input terminal,
The distributed first and second polarized signals are respectively input to a plurality of switching circuits provided corresponding to the number of received signals distributed by the distribution circuit.

The switching circuit selects a polarization signal corresponding to the polarization switching signal input from the terminal side to the corresponding output terminal from the two types of input polarization signals,
The selected first polarization signal or second polarization signal is output from the output terminal to the terminal. As a result, according to the satellite signal distributor of the present invention, if a polarization switching signal from a terminal device (such as the aforementioned CS tuner) connected to each output terminal is input to a plurality of output terminals, From each output terminal, a reception signal of the first polarization or the second polarization corresponding to the polarization switching signal is output, and each terminal device individually broadcasts a desired polarization channel. You can enjoy.

In the satellite signal distributor according to the present invention, the receiving section power supply means supplies power to the receiving section of the satellite receiving antenna from the polarization switching signal input to at least one of the output terminals from the terminal side. A signal is generated and output to the receiving unit side from a pair of input terminals corresponding to each receiving unit. In other words, the receiving unit of the satellite receiving antenna is generally configured to operate by receiving power supply from the terminal side to an output terminal that outputs a received signal.
A receiving unit power supply unit is provided to supply power to the receiving unit of the satellite receiving antenna. Therefore, according to the present invention,
Not only can the output terminal output the reception signal of the polarization requested by the terminal side, but also the power supply to the satellite reception antenna can be easily performed.

Also, in the satellite signal distributor according to the present invention, the second input terminal has a second input terminal different from the satellite reception antenna.
Receiving antenna (for example, the aforementioned VHF antenna, UHF
When a received signal (second received signal) from an antenna, a BS antenna, or the like is input, the second received signal mixing means mixes the second received signal with the first polarized signal and the second polarized signal. Then, the signal is output from each output terminal to the terminal together with the first polarization signal or the second polarization signal. Therefore, according to the present invention,
For a terminal device connected to the output terminal, a first polarization or second polarization reception signal corresponding to a request from the terminal side,
A signal received from the second receiving antenna can be simultaneously transmitted via a single cable.

Still further, in the satellite signal distributor according to the present invention, if a second power supply signal for supplying power to the second receiving antenna side device is input to the power receiving terminal, the second power supply means is provided. A second power supply signal is output from the second input terminal to the second receiving antenna. Therefore, an amplifier for amplifying a received signal is provided in a signal path connecting the second input terminal and the second receiving antenna, or a receiving unit in which the second receiving antenna operates by receiving power supply from the terminal side Even if a power supply device is connected to the power receiving terminal and a power supply signal is applied to the second receiving antenna-side device, the power supply to the second receiving antenna-side device can be extremely easily performed. It is possible to do.

As described above, according to the satellite signal distributor of the present invention, the first polarization signal and the second polarization signal output from each receiving section of the satellite receiving antenna are connected to each output terminal. A received signal having a polarization corresponding to a request (polarization switching signal) from the connected terminal can be selected and transmitted to each terminal, and a received signal from the second receiving antenna can be simultaneously transmitted to each terminal. Since it is possible to transmit and power supply to each receiving unit of the satellite receiving antenna and power supply to the second receiving antenna side device can be easily performed, when constructing the joint receiving system, it is preferable to set forth in claim 2 As described, each receiving section of the satellite receiving antenna is connected to a pair of input terminals for inputting a polarization signal of the satellite signal distributor, and a second input terminal of the satellite signal distributor is connected to a second input terminal of the satellite signal distributor. Second reception via amplifying device Connect the antenna further to the power receiving terminal of the satellite signal splitter, it is sufficient to connect the power supply for generating a second power supply signal for the amplifier power supply.

That is, if the joint receiving system is configured as described in claim 2, the broadcast wave from the communication satellite and the broadcast wave from the terrestrial station or the broadcast satellite are respectively received by the dedicated receiving antenna. Then, it becomes possible to transmit the received signal to a plurality of terminal devices satisfactorily. According to this joint receiving system, the connection between the satellite signal distributor and each terminal device may be performed by one cable, so that the wiring work becomes extremely simple.

The power supply connected to the power receiving terminal is a second power supply.
The power is supplied to the amplifying device for amplifying the received signal, and the amplifying device is operated. For example, a VHF is used as the second receiving antenna in the common receiving system.
When a BS antenna is provided in addition to a ground wave receiving antenna such as an antenna or a UHF antenna, a power supply signal output from a power supply unit is used to receive not only the amplifying device but also the BS antenna. The power may be supplied also to the unit.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram illustrating a configuration of a joint reception system according to an embodiment to which the present invention is applied.

As shown in FIG. 1, the joint receiving system of the present embodiment has a communication satellite (CS) as a satellite receiving antenna.
Orthogonal polarization (vertical polarization and horizontal polarization) transmitted from
CS antenna 2 for receiving the transmission radio wave of VHF and VHF for receiving the VHF and UHF television broadcast radio waves transmitted from the ground station as the second reception antenna.
Antenna 4 and UHF antenna 6 and broadcasting satellite (BS)
And a BS antenna 8 for receiving a television broadcast wave transmitted from the Internet.

The CS antenna 2 includes a reflector 2a and a receiver 2c disposed at a focal point of the reflector 2a via a support arm 2b. The receiving section 2c is called a two-output type converter, receives and amplifies the transmission radio waves from the communication satellite collected by the reflecting mirror 2a, and independently selects the polarization, to obtain a predetermined frequency band ( For example, 1572-2072
(MHz). The receiving unit 2c is configured so that two types of converter circuits independently select and output vertical polarization and horizontal polarization, respectively, according to the voltage value (DC 11 V or DC 15 V) applied to the output terminal. And
The output terminal is connected to a pair of CS input terminals 22v and 22h of a satellite signal distributor (hereinafter simply referred to as a distributor) 20 via a coaxial cable for transmitting a received signal. Note that the suffixes v,
h represents vertical polarization and horizontal polarization, respectively.

On the other hand, the BS antenna 8 is
Similarly, the reflecting mirror 8a and the reflecting mirror 8a via the support arm 8b
And a receiving unit 8c arranged at the focal position of. The receiving unit 8c receives and amplifies the transmission radio wave from the broadcasting satellite collected by the reflecting mirror 8a, and has a predetermined frequency band (for example, 1035 to 1335 MHz) different from the reception signal from the CS antenna 2. A converter circuit for converting into a reception signal is provided, and its output terminal is connected to the output terminals of VHF antenna 4 and UHF antenna 6 together with VHF,
It is connected to the input terminal of an amplification device (a so-called booster) 10 for amplifying each of the reception signals of HF and BS.

The booster 10 amplifies received signals (VU · BS) from the antennas 4, 6, and 8, respectively, combines the amplified received signals, and outputs the combined signal from an output terminal. The output terminal is connected to a VU / BS input terminal (second input terminal) 22i of the distributor 20 via a coaxial cable.

The booster 10 and the receiver 8c of the BS antenna 8 supply power to their output terminals (in this embodiment,
(DC 15 V) to operate.
In this embodiment, the VU / BS input terminal 22i of the distributor 20
To output a power supply signal of 15 V DC (the above-described second power supply signal) to operate the booster 10,
Further, a part of the power supply signal from the booster 10 is changed to BS.
By outputting to the antenna 8 side, the receiving unit 8c of the BS antenna 8 is operated.

Next, the distributor 20 is connected to the CS input terminal 22v.
, And 22h, the vertical polarization signal and the horizontal polarization signal from the CS antenna 2 are respectively divided into four, and one of the divided four vertical polarization signals and the horizontal polarization signal is VU · B
This is a four-way divider that outputs each of the VHF, UHF, and BS reception signals input to the S input terminal 22i to the terminal side from the four output terminals 24a to 24d. The output terminals 24a to 24d (hereinafter, also collectively referred to as output terminal 24) are connected via a coaxial cable for transmitting a received signal.
It is connected to a terminal device including a television receiver 12 and a CS tuner 14 arranged in each room of the facility where the joint receiving system is installed.

The terminal device is appropriately configured by a user of the system. As shown in FIG.
Normally, the output signal from the output terminal 24 of the distributor 20 is VH
F, UHF, BS received signals (VU / BS signal) and C
A separator SP1 for dividing the signal into a vertically polarized or horizontally polarized received signal (CS signal) from the S antenna 2 and a VU / BS signal from the separator SP1 are further divided into VHF,
A separator SP2 for dividing a UHF reception signal (VU signal) and a BS signal, and a tuner for receiving a VU signal and a BS signal from the separator SP2 at corresponding input terminals and restoring a video / audio signal of a desired broadcast channel. Built-in TV receiver 12 and CS from separator SP1
It comprises a CS tuner 14 for restoring a video / audio signal of a desired channel from the signal and inputting it to the television receiver 12. Then, the CS tuner 14 controls the DC 11
By outputting a V or 15 V polarization switching signal to the output terminal 24 of the distributor 20, the polarization switching of the CS signal and the C signal
The power supply to the S antenna 2 is performed simultaneously. Note that the CS tuner 14 configured as described above is used.
Is well known in the art, and a detailed description thereof will be omitted.

Next, the configuration of the distributor 20, which is a main part of the present invention, will be described. As shown in FIG.
Each of the CS input terminals 22v and 22 for inputting a vertically polarized signal and a horizontally polarized signal (for V input and H input) is provided to the distributor 20.
h, a high-pass filter 30v, 30 for passing each polarization signal is connected to the center terminal to which the core of the coaxial cable is connected.
h, a pair of distribution circuits 28v and 28h
Is provided.

Each of the distribution circuits 28v and 28h is for dividing the vertically polarized signal and the horizontally polarized signal input to each of the CS input terminals 22v and 22h into four, respectively. And a switching circuit 34 via a voltage synthesizing unit 36 comprising a capacitor C and a choke coil L, respectively.
a to 34d.

Each of the switching circuits 34a to 34d
8v and 28h, respectively, receives the vertical polarization signal and the horizontal polarization signal, selects one of the polarization signals, and outputs the selected vertical polarization signal or horizontal polarization signal to the corresponding output terminal 24a. To 24d, the output terminal 24a
This is for transmitting either a vertically polarized signal or a horizontally polarized signal to the terminal connected to -24d, and is configured as shown in FIG.

That is, as shown in FIG.
(Specifically, 34a to 34d) are input terminals TIV for a vertically polarized signal receiving the vertically polarized signal from the distribution circuit 28v.
And an input terminal TIH for a horizontally polarized signal receiving the horizontally polarized signal from the distribution circuit 28h, and a reception signal (vertically polarized signal or horizontally polarized signal) input to one of the input terminals TIV and TIH. An output terminal Tout for outputting to the terminal side and a relay circuit 40 for selectively connecting any one of the two input terminals TIV and TIH to the output terminal Tout are provided.

Then, the relay circuit 40 and the output terminal Tout
And a power supply separation filter 44 for separating the polarization switching signal (11 V or 15 V) input to the output terminal Tout side, and a polarization switching signal separated by the power supply separation filter 44. And a power supply superimposing filter 42 for bypassing to the relay circuit 40 side via a diode D for backflow prevention.

The relay circuit 40 includes a relay contact 40
In this embodiment, the relay contact 40a connects the input terminal TIV to the output terminal Tout when no power is supplied to the relay coil 40b. Outputs the polarized signal to the output terminal Tout
When the relay coil 40b is energized, the relay contact 40a connects the input terminal TIH to the output terminal Tout, and outputs the horizontal polarization signal to the output terminal Tout.
Output from

The power supply superimposing filter 42 includes a coil L1 for superimposing a DC voltage (ie, a polarization switching signal) input through the diode D on a signal path between the relay circuit 40 and the power supply separating filter 44. A capacitor C1 for preventing a DC current from flowing to the output terminal Tout side by the DC voltage superimposed via the coil L1 constitutes a high-pass filter for passing a high-frequency component on a signal path of a received signal. ing. The power supply separation filter 44 has a coil L for extracting a DC voltage (polarization switching signal) supplied from the terminal side to the output terminal Tout.
2 and a capacitor C2 for preventing a DC current from flowing from the output terminal Tout to the relay circuit 40 through a signal path between the power supply superimposing filter 42 and the output terminal Tout. A high-pass filter that passes high-frequency components.

Next, each switching circuit 34 includes a constant voltage circuit 46 for converting the DC voltage (polarization switching signal) separated by the power supply separation filter 44 into a constant voltage for driving an internal circuit.
A smoothing capacitor 48 for stabilizing the output from the constant voltage circuit is provided, and a constant power supply voltage + Vc is generated by these operations. Each switching circuit 34 includes a determination circuit 50 that operates in response to the generated power supply voltage + Vc, and a drive circuit 52 that switches between energization and non-energization of the relay coil 40b.

The determination circuit 50 determines whether the voltage level of the polarization switching signal from the terminal side separated by the power supply separation filter 44 is the vertical polarization receiving voltage level of 11 V or the horizontal polarization receiving voltage level. This is for determining whether the voltage is 15 V or more. The voltage dividing resistors R1 and R2 for dividing the polarization switching signal, and the resistors R3 and R3 for dividing the power supply voltage + Vc to generate a reference voltage for voltage determination. R4 and resistors R1,
The voltage value of the polarization switching signal divided by R2 and the resistor R3
, R4, the operational amplifier OP which outputs a high-level decision signal when the polarization switching signal input from the terminal is, for example, 13 V or more, and outputs a low-level determination signal when the polarization switching signal is less than 13 V. And a comparator comprising:

The drive circuit 52 receives the power supply voltage + Vc as an emitter and the determination signal from the determination circuit 50 as a base. When the determination signal is at a low level, the drive circuit 52 is turned on, and the collector is connected to the relay coil 40b. And a capacitor C3 for absorbing a voltage change connected to the collector of the transistor TR.

As a result, the DC 11
V is output, and this signal is output to an output terminal 24.
When input to the switching circuits 34a to 34d via the switching circuits 34a to 34d, the determination circuit 5
The output of 0 becomes high level, the transistor TR in the drive circuit 52 is turned off, the energization of the relay coil 40b is cut off, and the relay contact 40a is switched to the input terminal TIV for inputting the vertically polarized signal. . Conversely, a 15 V DC polarization switching signal is output from the CS tuner 14, and this signal is output to the switching circuit 3 via output terminals 24 a to 24 d.
4a-34d, the switching circuits 34a-34
Within d, the output of the decision circuit 50 goes low,
The transistor TR in the drive circuit 52 is turned on, the relay coil 40b is energized, and the relay contact 40a is switched to the input terminal TIH for inputting a horizontally polarized signal. Therefore, the CS tuner 14 connected to the output terminals 24a to 24d outputs a vertical polarization signal or a horizontal polarization signal corresponding to the voltage level (11 V or 15 V DC) of the polarization switching signal output from the CS tuner 14. Will be done.

In each of the switching circuits 34a to 34d,
The polarization switching signal input to the output terminal Tout is converted by a polarization switching signal output circuit comprising a coil L2 in the power supply separation filter 44, a diode D for preventing backflow, and a coil L1 in the power supply superposition filter 42. It is applied to the power supply superimposing filter 42 side of the relay circuit 40. As a result, of the four switching circuits 34a to 34d, the switching circuit 34 that selects the vertical polarization signal based on the 11V polarization switching signal output from the CS tuner 14 via the relay circuit 40
From the input terminal TIV to the distribution output terminal side of the distribution circuit 28v,
The switching circuit 34, which outputs a polarization switching signal of 11 V and selects a horizontal polarization signal based on the polarization switching signal of 15 V output from the CS tuner 14, inputs the input terminal via the relay circuit 40. A 15 V polarization switching signal is output from TIH to the distribution output terminal side of distribution circuit 28h.

Next, from the distribution output terminals of the distribution circuits 28v, 28h, the input terminals TIV,
The voltage synthesizing section 36 provided on the input path of the received signal reaching the TIH corresponds to the receiving section power supply means of the present invention, and as shown in FIG. 1, the input terminals TIV, Eight choke coils L for extracting 11 V and 15 V polarization switching signals output from TIH, respectively
And eight capacitors C for preventing a current from flowing to the distribution circuits 28v and 28h due to the polarization switching signal.

Of the eight choke coils L, the other ends of the choke coils L connected to the input terminals TIV of the switching circuits 34a to 34d are connected to each other, and the connection point is connected to the choke coil Lv. The input terminal is connected to a CS input terminal 22v for inputting a vertically polarized signal (V input). The other ends of the choke coils L connected to the input terminals TIH of the switching circuits 34a to 34d are also connected to each other, and the connection point is connected to a horizontal polarization signal input (H input) via the choke coil Lh. CS input terminal 22h.

Therefore, the 11 V and 15 V polarization switching signals output from the input terminals TIV and TIH of the switching circuits 34a to 34d are respectively converted by the vertical polarization receiving converter built in the receiving section 2c of the CS antenna 2. Circuit and the horizontal polarization receiving converter circuit, and each converter circuit outputs a polarization switching signal (11 V, 1
5V) to operate normally, and output a vertical polarization signal and a horizontal polarization signal, respectively.

Next, the distributor 20 receives the VU · BS output signal (VU · BS signal) from the booster 10.
In the BS input terminal 22i, a power supply signal to be described later is blocked at a center terminal to which the core of the coaxial cable is connected,
A distribution circuit 28i for dividing the VU / BS signal into two is connected. The distribution circuit 28i is connected to two distribution output terminals of the distribution circuit 28i via low-pass filters 32a and 32b for passing a VU / BS signal and blocking a CS signal.
v, 28h are connected to the input terminals.

As a result, the VHF, UHF, and BS received signals (VU / BS signals) input to the VU / BS input terminal 22i via the booster 10 are transmitted to the CS input terminal 22i.
v, 22h together with the vertical polarization signal and the horizontal polarization signal, are input to the distribution circuits 28v, 28h, and are switched to the switching circuits 34a to 34d and the output terminals 24a to 24h.
The data is output to each terminal device via 24d. In this embodiment, the distribution circuit 28i and the low-pass filters 32a and 32b correspond to the second reception signal mixing means of the present invention.

Further, the distributor 20 includes a booster 10
And a power supply unit 16 for generating a power supply signal (15 V DC) for supplying power to the receiving unit 8c of the BS antenna 8
Is provided with a power receiving terminal 26 for connecting the. The center terminal of the VU / BS input terminal 22i is connected to the power receiving terminal 26 via the choke coil Li.

As a result, the power supply signal generated by the power supply unit 16 is supplied to the power receiving terminal 26, the choke coil Li, and the VU to the booster 10 and the receiver 8c of the BS antenna 8.
Distributor 2 via BS input terminal and coaxial cable
0, the booster 10 and BS
The receiving section 8c of the antenna 8 receives the supplied power supply signal, operates normally, and sends a VU ·
It becomes possible to transmit a BS signal. In this embodiment, the choke coil Li corresponds to the second power supply unit of the present invention.

As described above, the distributor 2 of this embodiment is
According to 0, the reception signal (vertical polarization signal or horizontal polarization signal) of the polarization plane corresponding to the polarization switching signal from the terminal device (specifically, the CS tuner 14) connected to each of the four output terminals 24a to 24d. ) Can be output from each of the output terminals 24a to 24d, and each of the output terminals 24a to 24d.
From d, received signals from receiving antennas other than the CS antenna 2 (in this embodiment, VHF antenna 4, UHF antenna 6, and BS antenna 8) can be output simultaneously. Therefore, for each terminal device connected to the output terminals 24a to 24d, using one coaxial cable, the vertical polarization signal or the horizontal polarization signal received by the CS antenna 2,
Each of the reception signals (VU / BS signals) received by the VHF, UHF, and BS reception antennas 4, 6, and 8 can be transmitted at the same time. When constructing a joint reception system, reception signal transmission is performed. Wiring can be performed very easily.

A power supply for outputting a polarization switching signal from a terminal device (specifically, the CS tuner 14) to the receiving section 2c of the CS antenna 2 for outputting a vertical polarization signal and a horizontal polarization signal, respectively. It can be supplied as supply signals (11 V, 15 V),
Since a power supply signal (15 V) generated by the power supply device 16 can be supplied to the power supply device c, a separate power supply line may be provided to operate these units 2c, 10, 8c, or , These parts 2c, 10, 8
There is no need to directly connect a power supply device to the terminal c, and the joint receiving system can be realized more easily.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various embodiments can be adopted. For example, in the above embodiment, the receiving unit 2c of the CS antenna 2 includes the CS tuner 1
Although the description has been made assuming that the power supply signal obtained by synthesizing the polarization switching signal output from the output unit 4 is output, if the power of the polarization switching signal from the CS tuner 14 is small, the receiving unit 2c of the CS tuner will be sufficient. Power may not be supplied. Therefore, in such a joint receiving system, CS
A power supply device for generating a power supply signal for the receiving unit 2c of the antenna 2 is separately provided. On the distributor side, based on the power supply signal from the power supply device, the receiving unit 2 of the CS antenna 2
A power supply signal (11 V, 15 V) for c may be generated.

Hereinafter, the joint receiving system configured as described above will be described as a second embodiment of the present invention. FIG.
FIG. 9 is a configuration diagram illustrating a configuration of a joint reception system according to a second embodiment. As shown in FIG. 3, the joint receiving system of the present embodiment includes a CS antenna 2, a VHF antenna 4, a UHF antenna 6, a BS antenna 8, and a booster 10, similarly to the joint receiving system shown in FIG. And booster 10
(VU / BS signal) is input to the VU / BS input terminal 72i of the distributor 70 via a coaxial cable, and an output signal (VU / BS signal) from a pair of converter circuits constituting the receiving unit 2c of the CS antenna 2 The vertically polarized signal and the horizontally polarized signal are input to the CS input terminals 72v and 72h of the distributor 70 via coaxial cables, respectively.

The distributor 70 receives a power supply signal (second power supply signal) from the power supply 16 for supplying power to the booster 10 and the BS antenna 8 as in the distributor 20 shown in FIG. A power receiving terminal 76 is provided,
Four output terminals 74a to 74d are provided. One of the four output terminals 74a to 74d (output terminal 74d in this embodiment) is connected to a terminal device (specifically, CS terminal).
A power supply device 60 for generating a voltage signal of the same level as the polarization switching signal from the tuner 14) is connected.

The power supply device 60 is, for example, an AC power supply.
An AC voltage (for example, 100 V AC) input from a commercial power supply via a plug is converted to a predetermined AC voltage (for example, AC 2 V).
4V), a full-wave rectifier circuit that generates a DC power supply voltage by full-wave rectification of the AC voltage converted by the power supply transformer, and a predetermined DC voltage that receives an output voltage from the full-wave rectification circuit. A constant voltage circuit that generates a constant voltage (DC 15 V in this embodiment) and a DC constant voltage 15 V generated by the constant voltage circuit, and a lower DC constant voltage (DC 11 V in this embodiment) is received. A constant voltage circuit to be generated and a voltage level of the polarization switching signal transmitted from the terminal side (specifically, the CS tuner 14) are determined, and a constant voltage for generating a DC constant voltage (11V or 15V) corresponding to the voltage level is determined. And an output voltage switching circuit for selectively outputting the output voltage from the voltage circuit to the distributor 70 side. A voltage signal having the same level as the polarization switching signal transmitted from the terminal side is switched.・ Power supply Output terminal as a voltage signal of use 74d
Output to In addition, the power supply device 60 outputs the received signal output from the output terminal 74d of the distributor 70 directly to the terminal side via a high-frequency coupling capacitor or the like.

Next, the distributor 70, like the distributor 20 of the above embodiment, receives the VU / BS input terminal 72i.
The U / BS signal is mixed with the CS signals (vertical polarization signal and horizontal polarization signal) of each polarization plane input to the CS input terminals 72v and 72h, and the mixed signals are respectively dedicated distribution circuits 78v and 78h. , And any one of the two types of mixed signals is divided into four output terminals 74a to 74a.
Output from 4d to the terminal side.

That is, in the distributor 70, first, VU · B
The VU / BS signal input to the S input terminal 72i is divided into two by the distribution circuit 78i. The two divided VU / BS signals are respectively supplied to low-pass filters (LPF) 82a and 82 for VU / BS signal passing / CS signal blocking.
b and a capacitor C for cutting DC and passing high frequency components
The signals are input to the distribution circuits 78v and 78h via V2 and Ch2. Further, the CS signals (vertical polarization signal and horizontal polarization signal) input to the CS input terminals 72v and 72h, respectively, are DC cut / high frequency component passing capacitors Cv1 and Cv1, respectively.
The signal is input to amplifier circuits Av and Ah for amplifying each signal via Ch1, amplified by these amplifier circuits Av and Ah, and then passed through a high-pass filter (HPF) 80v for passing a CS signal, blocking a VU / BS signal. , 80h and the capacitors Cv2, Ch2, respectively, to the distribution circuits 78v, 78h. As a result, a reception signal obtained by mixing the VU / BS signal and the vertical / horizontal polarization CS signal is input to each of the distribution circuits 78v and 78h.

On the other hand, switching circuits 84a to 84d are connected to the output terminals 74a to 74d, respectively.
The switching circuits 84a to 84d receive the two types of reception signals distributed by the distribution circuits 78v and 78h, respectively, as in the switching circuits 34a to 34d of the above-described embodiment, and from among them, output terminals from the terminal side. A reception signal corresponding to the voltage level of the voltage signal (polarization switching signal) supplied to 74a to 74d is selected, and the selected signal is output to corresponding output terminals 74a to 74d.
From the distribution circuits 78v and 78h, and selects one of the output signals from the distribution circuits 78v and 78h, and via the capacitors Ca to Cd for DC cut / high frequency component passage, the corresponding output terminals 74a to 74d. The changeover switches 86a to 86d for outputting to 74d and the voltage signals (polarization switching signals) input from the terminals to the output terminals 74a to 74d are taken in via choke coils La to Ld for cutting high frequency components, and the taken in. Drive circuits 88a to 88d are provided for determining whether to select a vertical polarization signal or a horizontal polarization signal from the voltage level of the voltage signal, and for driving the changeover switches 86a to 86d according to the determination result. . As a result, also in the distributor 70 of the present embodiment, it is possible to output a reception signal of a desired polarization plane to the terminal device such as the CS tuner 14 connected to the output terminals 74a to 74d. .

Next, the four output terminals 74a to 74a
The power supply circuit 90 is connected via a choke coil Ld to the output terminal 74d to which the power supply device 60 is connected among the 4d. The power supply circuit 90 receives the voltage signal generated by the power supply device 60, and amplifies the amplifier circuits Av,
A three-terminal regulator 9 for generating a power supply signal (11 VDC) for operating a vertically polarized wave receiving converter circuit provided in the receiving section 2c of the Ah and CS antenna 2
2 and a DC-DC converter 94 that generates a voltage signal (15 V DC) for operating a converter circuit for horizontal polarization reception provided in the receiving unit 2 c of the CS antenna 2.

The voltage signal (DC 11 V) generated by the three-terminal regulator 92 is supplied to each of the amplifier circuits Av and Ah.
Is supplied directly to the converter circuit for vertical polarization reception of the CS antenna 2 via the choke coil LV1, the CS input terminal 72v and the coaxial cable,
A voltage signal generated by the DC converter 94 (DC 1
5V) is supplied to the converter circuit for horizontal polarization reception of the CS antenna 2 via the choke coil Lh1, the CS input terminal 72h, and the coaxial cable.

In the distributor 70, a power receiving terminal 76 for receiving a power supply signal for supplying power to the booster 10 and the BS antenna 8 from the power supply device 16 is connected to the manual changeover switch SW. This manual changeover switch SW is
The power receiving terminal 7 is connected to the booster 10 and the BS antenna 8.
The power supply is performed by a power supply signal from an external power supply (that is, the power supply device 16) connected to the power supply 6, or the power supply is performed by a voltage signal (DC 15 V) generated by the DC-DC converter 94. , For manual switching. The output terminal of the manual switch SW is connected to a connection point between the low-pass filter 82b and the capacitor Ch2 via a choke coil Li for cutting high-frequency components. As a result, in a state where the manual changeover switch SW is switched to the power receiving terminal 76 side (a state shown in FIG. 3), the power supply signal from the power supply device 16 connected to the power receiving terminal 76 receives the manual changeover switch SW and the choke. Coil Li, low-pass filter 82b, distribution circuit 78i,
Via the VU / BS input terminal 72i and the coaxial cable,
The signal is supplied to the booster 10 and further supplied to the receiving section 8c of the BS antenna 8 via the booster 10.

When the manual changeover switch SW is set to DC-DC
When the mode is switched to the converter 94 side, the booster 10 and the BS antenna 8 are connected to the DC-DC converter 94.
Is driven by the output voltage from the
The booster 10 and the BS antenna 8 can be operated without connecting the power supply device 16 to the power supply 6. However, in this case, it is necessary to drive the booster 10 and the BS antenna with the output voltage from the power supply device 60. Therefore, it is necessary to use a power supply device 60 having a large output power.

As described above, also in the joint receiving system of the second embodiment shown in FIG. 3, the terminal device connected to the four output terminals 24a to 24d of the distributor 70, similarly to the system shown in FIG. Using a single coaxial cable, a reception signal (CS signal) on the polarization plane required by the terminal side and a VU
-It is possible to simultaneously transmit the BS signal and the wiring for transmitting the received signal can be extremely easily performed. Further, since a power supply voltage for operation can be supplied to the CS antenna 2, the booster 10, and the BS antenna 8 via the distributor 70, it is not necessary to separately provide a power supply line to each of these parts. However, the joint receiving system can be easily realized.

Incidentally, in the distributor 70 shown in FIG.
A power supply circuit 90 including a three-terminal regulator 92 and a DC-DC converter 94 corresponds to a receiving unit power supply unit of the present invention, and converts a power supply signal input to the power receiving terminal 76 into a VU ·
The manual changeover switch SW and the choke coil Li for outputting the output from the BS input terminal 72i to the booster 10 side correspond to the second power supply means of the present invention.

Then, each of the distributors 2 shown in FIGS.
At 0 and 70, the VU.
BS signal and CS signal (vertical polarization signal and horizontal polarization signal)
Although the mixing with VU · BS has been described on the input side of each distribution circuit that distributes the vertical polarization signal and the horizontal polarization signal into four each through a low-pass filter as the second reception signal mixing means, Since the signal only needs to be output from each output terminal, for example, the signal may be mixed with the CS signal via a low-pass filter or the like on the output side of each distribution circuit or on the path from the switching circuit to the output terminal.

In each of the above embodiments, the four-way divider for dividing the received signal from the CS antenna 2 into four and outputting the divided signal has been described.
Needless to say, a distributor with an arbitrary number of distributions can be configured by appropriately setting the number of distributions (or 78v, 78h).

In each of the above embodiments, the CS antenna 2
Has been described as receiving two orthogonally polarized radio waves consisting of vertically polarized waves and horizontally polarized waves. However, the CS antenna transmits cross polarized waves consisting of right circularly polarized waves and left circularly polarized waves. It goes without saying that the present invention can be applied to a receiver.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram illustrating a configuration of an entire joint reception system according to an embodiment.

FIG. 2 is an electric circuit diagram showing a configuration of a switching circuit shown in FIG.

FIG. 3 is a schematic configuration diagram illustrating a configuration of an entire joint reception system according to a second embodiment.

[Explanation of symbols]

2 CS antenna, 2c receiving section, 4 VHF antenna, 6 UHF antenna, 8 BS antenna, 8c receiving section, 10 booster, 12 television receiver, 14 C
S tuner, SP1, SP2 ... separator, 16 ... power supply, 20 ... distributor, 22v, 22h ... CS input terminal,
22i: VU / BS input terminal, 24a to 24d: output terminal, 26: power receiving terminal, 28v, 28h, 28i: distribution circuit, 34a to 34b: switching circuit, 70: distributor, 72
v, 72h: CS input terminal, 72i: VU / BS input terminal, 74a to 74d: Output terminal, 76: Power receiving terminal, 78
v, 78h, 78i: distribution circuit, 84a to 84d: switching circuit, 90: power supply circuit, 92: three-terminal regulator, 9
4: DC-DC converter, SW: Manual changeover switch,
Li: Choke coil.

Claims (2)

[Claims] 1. A receiver for receiving a radio wave composed of two kinds of polarizations transmitted from a communication satellite for each polarization, converting each polarization signal into a reception signal in a predetermined frequency band, and outputting the reception signal. A satellite signal distributor connected to a satellite receiving antenna, which distributes a received signal from the receiving unit into a plurality of signals and transmits the received signal to a terminal, wherein a first polarized signal and a second polarized signal from the receiving unit are provided. A pair of input terminals for respectively inputting the signals, a pair of distribution circuits respectively distributing the respective polarization signals input to the pair of input terminals into a plurality, and a plurality corresponding to the number of signal distributions of the distribution circuit. An output terminal provided for each of the output terminals, receiving the first polarization signal and the second polarization signal distributed by the distribution circuits, respectively.
From the types of polarization signals, a polarization signal corresponding to the polarization switching signal input to the output terminal from the terminal side is selected, and the selected first polarization signal or second polarization signal is output from the output terminal. A switching circuit for outputting to the terminal side, and generating a power supply signal to a receiving unit of the satellite receiving antenna from a polarization switching signal input from at least one of the output terminals to the input terminal. Receiving unit power supply means for outputting to the receiving unit side from a second receiving terminal, a second input terminal for inputting a second reception signal from a second receiving antenna different from the satellite receiving antenna, and input to the second input terminal. The second received signal to the first
A second reception signal mixing unit that mixes the polarization signal and the second polarization signal and outputs the signal from each of the output terminals to the terminal together with the first polarization signal or the second polarization signal; A power receiving terminal for receiving a second power supply signal for supplying power to the second receiving antenna-side device; and a second power supply signal input to the power receiving terminal.
A second output from the input terminal to the second receiving antenna side
A satellite signal distributor, comprising: power supply means; 2. A joint receiving system for transmitting received signals from the satellite receiving antenna and the second receiving antenna to a plurality of terminals using the satellite signal distributor according to claim 1, wherein Each of the receiving portions of the satellite receiving antenna is connected to the pair of input terminals for inputting the polarization signal of the splitter, and a second input terminal of the satellite signal splitter is connected to a second input terminal of the satellite signal splitter through an amplifying device for amplifying a received signal. And a power receiving device for generating a second power supply signal for powering the amplification device is connected to a power receiving terminal of the satellite signal distributor.