JP2002199390A - Broadcasting satellite receiver with distributor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a broadcasting satellite(BS) receiver provided with a distributor and capable of completely eliminating the necessity of power consumption in the waiting state of the BS receiver and supplying LNB power from another BS receiver to a BS antenna by simple circuit constitution. SOLUTION: The BS receiver with the amplifier consists of an input terminal 12 for inputting a BS signal from an antenna 31 and supplying LNB power to the antenna 31, an amplifier circuit 16 for amplifying the BS signal inputted from the input terminal 21, the distributor 17 for distributing the BS signal amplified by the circuit 16 to 1st and 2nd BS signals, a distribution output terminal 23 for supplying the 2nd BS signal distributed by the distributor 17 to another BS receiver, a choke coil 24 for supplying LNB power supplied from the other BS receiver to the terminal 23, and a constant voltage circuit 26 for generating driving power for the circuit 16 by using the LNB power supply.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a satellite broadcast receiver for receiving a satellite television signal transmitted from a broadcasting satellite,
In particular, it relates to a satellite broadcast receiver with a distributor.

[0002]

2. Description of the Related Art A television receiver or a video cassette recorder (hereinafter referred to as a video cassette recorder) having a built-in satellite broadcast receiver called a satellite analog broadcast tuner for receiving and selecting a satellite analog television broadcast directly broadcast to general homes from a broadcasting satellite. Hereinafter, video devices are widely used.

[0003] In recent years, satellite digital television broadcasting has also started, and a satellite digital television receiver called a satellite digital television broadcasting tuner for receiving and selecting this satellite digital television broadcast, and a television incorporating the satellite digital television receiver. Receivers and video equipment have also been put to practical use.

Some of these satellite broadcast receivers for receiving and selecting a satellite television broadcast are provided with a distributor. A satellite television broadcast signal received by one antenna is distributed by the distributor, and the distributed satellite television signal is distributed. A satellite broadcast receiver with a distributor has been put to practical use, in which channel selection and reproduction processing are performed using one signal, and the other signal can be taken out from a distribution output terminal to supply it to another satellite broadcast receiver. I have.

[0005] When this satellite broadcast receiver with a distributor is used, a satellite television signal received by one antenna can be supplied to another satellite broadcast receiver, and satellite television broadcasts of different channels are received and selected. It is possible to do.

[0006] The satellite broadcast receiver with the distributor is described below.
This will be described with reference to the block diagram of FIG.

[0007] For example, 12 GH transmitted from a broadcasting satellite
A satellite television signal in the z-band is a parabolic antenna (hereinafter referred to as B
S antenna 65), and a low noise converter (Lo not shown) (not shown) provided on the BS antenna 65.
w Noise Block Downconverter, hereinafter referred to as “LNB”), is converted into a 1 GHz band BS signal, and supplied to a BS input terminal 52 of a main satellite receiver (hereinafter, referred to as main BS receiver) 51.

[0008] The BS signal supplied to the BS input terminal 12 is amplified by a BS amplifier circuit 56 via an AC coupling capacitor 55 and output to a distributor 57. In the distributor 57, the BS signal supplied to the BS tuner unit 58 of the main BS receiver 51 and the B signal via the capacitor 60
The signal is distributed to the BS signal supplied to the S distribution output terminal 61.

In the BS signal supplied from the distributor 57 to the BS tuner 58, a BS signal of a desired channel is selected by the BS tuner 58, and the selected BS signal is supplied to the main television monitor. I do.

From the distributor 57 to the BS distribution output terminal 61
Is output to the BS input terminal of another satellite receiver (hereinafter referred to as a sub-BS receiver) 64 connected to the BS distribution output terminal 61. The sub-BS receiver 64 has the same configuration and function as the main BS receiver 51, and selects a desired channel from the distribution BS signal supplied from the BS distribution output terminal of the main BS receiver 51. Then, the selected BS signal is supplied to the sub television monitor.

As a result, the video and audio of the BS television signal of each channel selected by the main BS receiver 51 and the sub BS receiver 64 are reproduced.

An LNB power for driving the LNB of the BS antenna 65 is supplied by using a signal cable connecting the BS antenna 65 and the BS input terminal 52. The LNB power supply 53 is supplied to the BS input terminal 52 via a backflow prevention diode 54. Further, the BS amplification circuit 56 and the BS tuner section 58 include:
Driving power is supplied from the BS power supply unit 59.

A connection point between the BS distribution output terminal 61 of the main BS receiver 51 and the capacitor 60 is connected to a DC detector 62 for detecting the LNB power supplied from the sub BS receiver 64. The output of the detector 62 is supplied to the microcomputer 63. This microcomputer 6
When the DC detector 62 detects the LNB power supplied from the sub-BS receiver 64 during standby when the main power supply circuit of the main BS receiver 51 is turned off, the LNB power supply unit 53 outputs The LNB power is supplied to the BS input terminal 52, and control is performed so that the BS power supply unit 59 supplies only the driving power to the BS amplification circuit 56.

That is, when the main BS receiver 51 is in the standby state and the AC power supply for driving the sub-BS receiver 64 is turned on, the DC detector 62 detects the sub-BS receiver 64 from the sub-BS receiver 64. LNB supplied to BS distribution output terminal 61
Detect power supply. When the DC detector 62 detects the LNB power of the sub BS receiver 64, the microcomputer 63 controls the driving of the LNB power unit 53 and the BS power unit 59,
The LNB power supply to the BS input terminal 52 and the drive power supply to the BS amplifier 56 are performed.

As a result, the BS signal received by the BS antenna 65 is supplied to the BS input terminal 52, the AC coupling capacitor 55, the BS amplifier 56, and the distributor 57. The BS signal distributed by the distributor 57 is supplied from the capacitor 60 and the BS distribution output terminal 61 to the sub-BS receiver 6.
4 to receive the BS signal at the sub-BS receiver 64.

However, the aforementioned main BS receiver 51
The LNB power supply unit 53 of the main BS receiver 51 for supplying LNB power to the BS antenna 65 during standby and the BS amplification circuit 5
6, and the power for driving the microcomputer 63 must be constantly supplied, and there is a problem that the driving AC power supply of the main BS receiver 51 cannot be completely turned off.

Japanese Patent Laid-Open No. 4-335719 discloses that, similarly to the main BS receiver 51, a BS tuner with a distributor is used to detect that LNB power is supplied from another BS tuner. And LNB to BS antenna
A method has been proposed in which a relay switch is used to supply a driving power of a BS amplifier of a BS tuner with a power supply and a distribution function from a stabilized power supply.

The BS tuner with a distributor proposed in the above-mentioned Japanese Patent Application Laid-Open No. 4-335719 also has an LN
A stable power supply for supplying a B power supply and a drive power supply for the BS amplifier and an operating power for constantly driving a control signal supply circuit for driving and controlling a relay switch are required.
There is a problem that the driving power supply of the S tuner cannot be completely turned off.

To solve such a problem, even if the driving AC power supply of the main BS receiver is completely turned off, the LNB is connected to the BS antenna.
The configuration of a BS receiver with a distributor that can supply power and that can supply a BS signal received by a BS antenna to a sub BS receiver will be described with reference to the block diagram of FIG. In addition,
2 are denoted by the same reference numerals, and detailed description is omitted.

The main BS receiver 51 shown in FIG. 3 has a first movable contact piece 71a connected to the BS input terminal 52.
And a contact 7 that is switchably connected to the first movable contact piece 71a.
1c and 71d, a second movable contact piece 71b connected to the BS distribution output terminal 61, and a second movable contact piece 71b.
And a relay switch 71 including contacts 71e and 71f that are switched and connected.

The contacts 71c and 7 of the relay switch 71
1e is directly connected, the contact 71d is connected to the AC coupling capacitor 55, and the contact 71f is connected to the other distribution BS signal output of the distributor 57 via the capacitor 60.

During the operation of turning on the driving AC power supply of the main BS receiver 51, the first movable contact piece 71a of the relay switch 71 is controlled so as to be connected to the contact 71d, and the BS input is controlled. The BS signal from the terminal 52 is supplied to the BS amplification circuit 56 via the AC coupling capacitor 55, and the second movable contact piece 71b
The other BS signal distributed by the distributor 57 is supplied to the BS distribution output terminal 61 via the capacitor 60 by being controlled to be connected to the contact 71f.

Thus, the BS signal received by the main BS receiver 51 is distributed by the distributor 57, and the BS signal selected by the BS tuner unit 58 of the main BS receiver 51;
A BS signal selected by another BS receiver 64 is obtained.

Next, when the AC power supply for driving the main BS receiver 51 is turned off, the relay switch 7 is not operated.
The first movable contact 71a is controlled to be connected to a contact 71c, and the second movable contact 71b is controlled to be connected to a contact 71e.
The distribution output terminal 61 is directly connected.

Thus, even if the primary BS receiver 51 is inactive, the LNB supplied from the secondary BS receiver 64
Power is supplied to the BS input terminal 52 of the main BS receiver 51 via the second movable contact 71b, the contacts 71e and 71c of the relay switch 71, and the first movable contact 71a. The LNB power supplied from the sub-BS receiver 64 supplied to the BS input terminal 52 drives the LNB of the BS antenna 65, and the BS signal received by the BS antenna 65 is supplied to the sub-BS receiver 64. Is done.

The first and second relay switches 1
Of the movable contact pieces 71a and 71b of the main BS receiver 51
When the drive AC power supply is turned on, the microcomputer 63 detects that the drive AC power supply is turned on, and the microcomputer 63 connects the first and second movable contact pieces 71a and 71b of the relay switch 71 to the contact points 71d and 71f. Control is performed so that the

This makes it possible to make the main BS receiver 51 connected to the BS antenna 65 inactive when the driving AC power supply is turned off, that is, to reduce the power consumption of the main BS receiver 51 during standby to zero. , LN from the secondary BS receiver 64
The BS antenna 65 is driven by the B power source, and the sub-BS receiver 6
4 can be selected to receive the BS signal.

[0028]

Conventionally, the BS receiver with a distributor shown in FIG. 2 has a DC detector for detecting the LNB power supplied from another BS receiver in a standby state. When it is detected that the LNB power is supplied from another BS receiver, the LNB power and the BS
The amplifier circuit is being driven.

For this reason, when the receiver with the distributor is on standby, power for driving the LNB power supply unit and the BS amplifier circuit is required, and it is desired to reduce the driving power during this standby.

Further, in the BS receiver with a distributor in FIG. 3, when the driving power is turned off, the LNB power supplied from another BS receiver is switched to be supplied to the BS antenna using a relay switch. Since the LNB power supply and the BS signal are superimposed and transmitted, it is necessary to use a relay switch having excellent high-frequency characteristics.

For this reason, the relay switch becomes expensive,
There is a problem that the cost of the BS receiver with a distributor increases.

The present invention has been made in view of the above-described problems, and has the power consumption of a BS receiver with a distributor in a standby state reduced to zero.
It is an object of the present invention to provide a BS receiver with a distributor that can supply LNB power from another BS receiver to a BS antenna with a simple circuit configuration.

[0033]

A satellite broadcast receiver with a distributor according to the present invention is connected to a cable for transmitting a satellite broadcast signal received by a satellite broadcast antenna, and is connected to the satellite broadcast antenna using the cable. An input terminal to which LNB power is supplied, an amplifier circuit for amplifying a satellite broadcast signal input to the input terminal, and a satellite broadcast signal amplified by the amplifier circuit are distributed to first and second satellite broadcast signals. A distributor, a tuner section for selecting and outputting the first satellite broadcast signal distributed by the distributor, and supplying and outputting the second satellite broadcast signal distributed by the distributor to another satellite broadcast receiver A distribution output terminal, provided between the input terminal and the distribution output terminal, for removing an AC component of the LNB power from another satellite broadcast receiver supplied to the distribution output terminal, and removing only a DC component from the input terminal. To serve A high frequency choke coil, characterized by comprising a.

In the satellite broadcast receiver with a distributor according to the present invention, a cable for transmitting a satellite broadcast signal received by a satellite broadcast antenna is connected, and LNB power of the satellite broadcast antenna is supplied using the cable. An input terminal, an amplifier circuit for amplifying a satellite broadcast signal input to the input terminal, a distributor for distributing the satellite broadcast signal amplified by the amplifier circuit to first and second satellite broadcast signals, A tuner section for selecting and outputting the first satellite broadcast signal distributed by the distributor, a distribution output terminal for supplying and outputting the second satellite broadcast signal distributed by the distributor to another satellite broadcast receiver, LN from another satellite broadcast receiver supplied to the distribution output terminal
A constant voltage circuit that generates a drive power supply for the amplifier circuit using a B power supply.

In the satellite broadcast receiver with a distributor according to the present invention, a cable for transmitting a satellite broadcast signal received by the satellite broadcast antenna is connected, and the LNB power of the satellite broadcast antenna is supplied using the cable. An input terminal, an amplifier circuit for amplifying a satellite broadcast signal input to the input terminal, a distributor for distributing the satellite broadcast signal amplified by the amplifier circuit to first and second satellite broadcast signals, A tuner section for selecting and outputting the first satellite broadcast signal distributed by the distributor, and a distribution output terminal for supplying and outputting the second satellite broadcast signal distributed by the distributor for another satellite broadcast receiver And providing between the input terminal and the distribution output terminal an AC component of an LNB power supply from another satellite broadcast receiver supplied to the distribution output terminal, and supplying only a DC component to the input terminal. High And wave choke coil, using the LNB power output from the high-frequency choke coil, a constant voltage circuit for generating a drive power of the amplifier circuit,
It is characterized by having.

Further, the high-frequency choke coil provided between the input terminal and the distribution output terminal of the satellite broadcast receiver with a distributor according to the present invention is provided with a high-frequency choke coil from another satellite broadcast receiver supplied to the distribution output terminal. And a high frequency choke coil for setting the input / output impedance of the distributor as viewed from the input terminal to a specified impedance.

The constant voltage circuit of the satellite broadcast receiver with a distributor according to the present invention comprises a current limiting resistor, a Zener diode and a Zener noise absorption capacitor. And supplying the signal to the amplifier circuit via the control circuit.

Still further, a satellite broadcast receiver with a distributor according to the present invention is an LNB power supply supplied to the distribution output terminal from the another satellite broadcast receiver and supplied to the input terminal via the high-frequency choke coil. The power supply for driving the amplifier circuit generated by the constant voltage circuit is provided with a backflow prevention diode so as to be supplied only to the input terminal and the amplifier circuit.

According to the present invention, when the AC power supply for driving a satellite broadcast receiver with a distributor is turned off, the LNB of the satellite broadcast antenna is driven using the LNB power supplied from another satellite broadcast receiver. And a power supply for driving an amplifier for amplifying a satellite broadcast signal received by the antenna to a signal of a predetermined value, and the drive power supply can be generated using general-purpose electric components. Became possible.

[0040]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of a satellite broadcast receiving device with a distributor according to the present invention.

The main satellite broadcast receiver of the present invention (hereinafter referred to as main BS)
The receiver 11 is connected to the BS antenna 31 by L
It has a BS input terminal 12 for supplying NB power and for receiving a BS signal received by the BS antenna 31.

The BS signal supplied to the BS input terminal 12 is amplified by a BS amplifier 16 via an AC coupling capacitor 15 and output to a distributor 17. The distributor 17 distributes the first BS signal supplied to the BS tuner section 18 of the main BS receiver 11 and the second BS signal supplied to the BS distribution output terminal 23 via the capacitor 22.

As the first BS signal supplied from the distributor 17 to the BS tuner section 18, a BS signal of a desired channel is selected by the BS tuner section 18, and the selected BS signal is transmitted to the main television monitor. 32.

From the distributor 17 to the BS distribution output terminal 23
Is output to a BS input terminal of another satellite broadcast receiver (hereinafter, referred to as a sub-BS receiver) 33 connected to the BS distribution output terminal 23. The sub-BS receiver 33 has the same configuration and function as the main BS receiver 11, and is based on the second BS signal supplied from the BS distribution output terminal 23 of the main BS receiver 11. A desired channel is selected, and the selected BS signal is supplied to the sub television monitor 34.

Thus, the video and audio of the BS signal of each channel selected by the main BS receiver 11 and the sub BS receiver 33 are reproduced.

An LNB power for driving the LNB of the BS antenna 31 is supplied by using a signal cable connecting the BS antenna 31 and the BS input terminal 12. The LNB power supply 13 is supplied to the BS input terminal 12 via a backflow prevention diode 14. Said B
The S amplifier 16 is supplied with driving power from a BS power supply 19 via a backflow prevention diode 20. The BS tuner section 18 is supplied with driving power from the BS power supply section 19.

The LNB power supply 13 controls the LNB power supplied to the BS antenna 31 under the control of the microcomputer 21. Further, the microcomputer 21 is also used for channel selection control of the BS tuner unit 18.

Choke coils 24 and 25 are connected in series between the BS input terminal 12 and the BS distribution output terminal 23. The connection point between the choke coils 24 and 25 is connected to the cathode of a Zener diode 28 via a current limiting resistor 27.
An anode 8 is grounded, and a Zener noise removing capacitor 29 is connected between the cathode and the anode to form a constant voltage circuit 26.

The connection point between the current limiting resistor 27 of the constant voltage circuit 26 and the cathode of the Zener diode 28 is connected to the BS amplifier circuit 16 via a backflow prevention diode 30.

When the main BS receiver 11 having such a configuration is driven, an LNB power supply of about 15 V is supplied from the LNB power supply unit 13 to the BS input terminal 12 via the diode 14. In addition, the backflow prevention diode 2
0, the driving power supply of the BS amplification circuit 16
The driving power of the BS tuner 18 is supplied from the power supply 19. The LNB power supplied to the BS input terminal 12 is supplied to an LNB (not shown) of the BS antenna 31 via a cable connected to the BS antenna 31. The BS signal received by the BS antenna 31 and transmitted via the cable is supplied from the BS input terminal 12 to the BS amplification circuit 16 via the AC coupling capacitor 15. The first BS signal amplified by the BS amplifier circuit 16 to a predetermined BS signal value and output to the BS tuner section 18 by the distributor 17 and the second BS signal supplied to the BS distribution output terminal 23 via the capacitor 22. Distributed to BS signal.

The BS signal of the channel selected by the BS tuner section 18 is subjected to predetermined reproduction processing on the main television monitor 32 to reproduce video and audio.

The second signal supplied to the BS distribution output terminal 23
Is supplied to the sub-BS receiver 23 connected to the BS distribution output terminal 23, and a predetermined reproduction process is performed based on the BS signal of the channel selected by the tuner section of the sub-BS receiver 33. Perform video and audio playback.

Thus, the BS signal received by one BS antenna 31 can be supplied to the sub BS receiver 33 via the main BS receiver 11.

Next, when the driving AC power supply of the main BS receiver 11 is turned off, the LNB power supply from the LNB power supply unit 13 to the BS antenna 31 is stopped, and the BS power supply unit 19 transmits the BS amplification circuit 16 The supply of the driving power supplied to the BS tuner 18 is also stopped.

On the other hand, when the sub-BS receiver 33 is driven, the LBS generated by the sub-BS receiver 33 is connected to the BS input terminal of the sub-BS receiver 33 in the same manner as the main BS receiver 11. Power is supplied. This sub BS receiver 33
LNB power supplied to the BS input terminal of the main BS
It is supplied to the BS distribution output terminal 23 of the receiver 11. The LNB power supplied to the BS distribution output terminal 23 is supplied to the main BS receiver 11 via choke coils 24 and 25.
Of the BS antenna 3
1 LNB power supply.

The choke coil 24 removes an AC component at a high frequency and supplies only the DC component of the LNB power supplied from the sub BS receiver 33 to the BS antenna 31. The input / output impedance of the distributor 17 is set to a low impedance of 75Ω, and the choke coil 25 increases the Zener power supply impedance when the constant voltage circuit 26 is viewed from the BS input terminal 12.

On the other hand, the LNB power from the sub-BS receiver 33 taken out from the connection point between the choke coils 24 and 25 is set to a predetermined potential by the current limiting resistor 27 of the constant voltage circuit 26 and the Zener diode, and Are supplied to the BS amplification circuit 16 via the backflow prevention diode 30. The capacitor 29 of the constant voltage circuit 26 is for absorbing the zener noise of the zener diode 29.

That is, AC for driving the main BS receiver 11
Even when the power is completely turned off, if the sub-BS receiver 33 is driven, the LNB power supplied from the sub-BS receiver 33 supplies LNB power to the BS antenna 31, and The LN from the secondary BS receiver 33
The B power supply is converted to a predetermined potential by the constant
It can be supplied as drive power for the BS amplifier circuit 16 of the S receiver 11.

Thus, the BS signal received by the BS antenna 31 is supplied from the BS input terminal 12 of the main BS receiver 11 to the distributor 17 via the AC coupling capacitor 15 and the BS amplification circuit 16. The BS signal distributed by the distributor 17 is supplied to the sub-BS receiver 33 via the capacitor 22 and the BS distribution output terminal 23, and is supplied to the sub-BS receiver 33.
Video and audio of the channel selected by the receiver 33 can be reproduced.

The L supplied from the secondary BS receiver 33 is
The circuit that supplies the LNB power to the BS antenna 31 using the NB power and the circuit that supplies the driving power to the BS amplifier circuit 16 use general-purpose choke coils, resistors, zener diodes, capacitors, and diodes that are easily available. Can be formed.

As the main BS receiver 11, a set-top box for receiving satellite digital television broadcasts, a television receiver with a built-in satellite digital television broadcast reception function, or the like can be used. For example, a television receiver or a video device having a satellite analog television broadcast receiving function can be used.

[0062]

According to the present invention, even when the driving power of the satellite broadcasting receiver with a distributor connected to a satellite broadcasting antenna is completely turned off, the satellite broadcasting receiver with a distributor is connected to the satellite broadcasting receiver. LNB power supply from the satellite broadcast receiver enables driving of the satellite broadcast receiving antenna and amplifying operation of the received satellite broadcast signal, and the satellite broadcast receiver with the distributor has no power consumption during standby. Was realized.

A circuit for supplying LNB power supplied from another satellite broadcast receiver to the satellite broadcast antenna and a drive power supply circuit for amplifying a received satellite broadcast signal are composed of general-purpose electric components. To be formed using
This has the effect that the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a satellite broadcast receiver with a distributor according to the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional satellite broadcast receiver with a distributor.

FIG. 3 is a block diagram showing a configuration of a conventional satellite broadcast receiver with a distributor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Main satellite broadcasting receiver (main BS receiver) 12 ... BS input terminal 13 ... LNB power supply part 14 ... Backflow prevention diode 15 ... AC coupling capacitor 16 ... BS amplifier circuit 17 ... Distributor 18 ... BS tuner part 19 ... BS power supply unit 20 ... Backflow prevention diode 21 ... Microcomputer 22 ... Capacitor 23 ... BS distribution output terminal 24, 25 ... High frequency choke coil 26 ... Constant voltage circuit 27 ... Current limiting resistor 28 ... Zener diode 29 ... Zener noise capacitor 30 ... Backflow prevention Diode 31 BS antenna 32 Primary TV monitor 33 Secondary BS receiver 34 Secondary television monitor

Claims (6)

[Claims] 1. A cable for transmitting a satellite broadcast signal received by a satellite broadcast antenna is connected, and an input terminal to which LNB power of the satellite broadcast antenna is supplied by using the cable; Amplifying circuit for amplifying the received satellite broadcast signal, a distributor for distributing the satellite broadcast signal amplified by the amplifier circuit to first and second satellite broadcast signals, and a first satellite broadcast distributed by the distributor A tuner unit for selecting and outputting a signal; a distribution output terminal for supplying and outputting the second satellite broadcast signal distributed by the distributor to another satellite broadcast receiver; and a distribution output terminal provided between the input terminal and the distribution output terminal. LN from another satellite broadcast receiver supplied to the distribution output terminal.
A high frequency choke coil for removing an AC component of the B power supply and supplying only a DC component to the input terminal, a satellite broadcast receiver with a distributor. 2. A cable for transmitting a satellite broadcast signal received by a satellite broadcast antenna is connected, and an input terminal to which LNB power of the satellite broadcast antenna is supplied by using the cable; Amplifying circuit for amplifying the received satellite broadcast signal, a distributor for distributing the satellite broadcast signal amplified by the amplifier circuit to first and second satellite broadcast signals, and a first satellite broadcast distributed by the distributor A tuner section for selecting and outputting a signal; a distribution output terminal for supplying and outputting the second satellite broadcast signal distributed by the distributor to another satellite broadcast receiver; and another satellite supplied to the distribution output terminal And a constant voltage circuit for generating a drive power supply for the amplifier circuit using an LNB power supply from a broadcast receiver. 3. A cable for transmitting a satellite broadcast signal received by a satellite broadcast antenna is connected, an input terminal to which LNB power of the satellite broadcast antenna is supplied using the cable, and a signal input to the input terminal. Amplifying circuit for amplifying the received satellite broadcast signal, a distributor for distributing the satellite broadcast signal amplified by the amplifier circuit to first and second satellite broadcast signals, and a first satellite broadcast distributed by the distributor A tuner section for selecting and outputting a signal, a distribution output terminal for supplying and outputting the second satellite broadcast signal distributed by the distributor for another satellite broadcast receiver, and between the input terminal and the distribution output terminal. LN from another satellite broadcast receiver provided to the distribution output terminal
A high-frequency choke coil that removes an AC component of the B power supply and supplies only a DC component to the input terminal; and a constant voltage that generates a drive power supply for the amplifier circuit using the LNB power supply output from the high-frequency choke coil. A satellite broadcast receiver with a distributor, comprising: a circuit; 4. A high-frequency choke coil provided between the input terminal and the distribution output terminal removes an AC component of an LNB power from another satellite broadcast receiver supplied to the distribution output terminal. The satellite broadcast receiver with a distribution function according to claim 1 or 3, further comprising: a coil; and a high-frequency choke coil for setting input / output impedance of the distributor as viewed from the input terminal to a specified impedance. . 5. The constant voltage circuit includes a current limiting resistor, a Zener diode, and a Zener noise absorption capacitor, and supplies a voltage generated by the constant voltage circuit to the amplifier circuit via a backflow prevention diode. The satellite broadcast receiver with a distribution function according to claim 2 or 3, wherein: 6. An LNB power supply supplied from said another satellite broadcast receiver to said distribution output terminal and supplied to said input terminal via said high-frequency choke coil, and an amplifier circuit generated by said constant voltage circuit. The satellite broadcast receiver with a distribution function according to any one of claims 1 to 5, wherein a backflow prevention diode is provided so that the power to be driven is supplied only to the input terminal and the amplifier circuit. .