JPH08149382A - Booster - Google Patents

Abstract

PURPOSE: To receive an objective signal respectively without misconnection even when a person not knowing electric intelligence makes the connection by distributingly providing a ground broadcast signal outputted from an amplifier section and a satellite broadcast signal to plural output terminals. CONSTITUTION: When a ground broadcast signal and a satellite broadcast signal are given to an input terminal A1, the ground broadcast signal and the satellite broadcast signal are outputted to all of plural output terminals A2, A2' via an amplifier section A4 and a distribution section A5. Thus, it is possible to connect plural ground broadcast signal television receivers 25 or a video tape recorder or a satellite broadcast signal television receiver and a video tape recorder 26 to the output terminals A2, A2' to enjoy watching preferred ground broadcast or satellite broadcast programs or video-recording the programs. When respective receivers are connected to the output terminals A2, A2' for the reception of various types of broadcast signals, respective receivers obtain required broadcast signals even when any receiver is connected to any of the output terminals A2, A2'.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention distributes the above-mentioned broadcast signals for a plurality of receiving devices when a terrestrial broadcast signal and a satellite broadcast signal are to be received by a plurality of receiving devices, and provides a high quality image. The present invention relates to a booster used for amplifying a low level signal of those broadcast signals so as to enable reception of the signal. In the present specification, V
Broadcast signals that are broadcast only by terrestrial facilities, such as HF and UHF television broadcast signals, FM broadcast signals, and cable broadcast signals, are collectively called terrestrial broadcast signals and are broadcast using broadcasting satellites and communication satellites. Signal is called a satellite broadcast signal.

[0002]

2. Description of the Related Art Input terminals for inputting terrestrial broadcasting signals and satellite broadcasting signals, first and second terrestrial broadcasting output terminals for connecting receiving devices for receiving terrestrial broadcasting signals, and satellite broadcasting A satellite broadcast output terminal for connecting a receiving device for signal reception. Each of the broadcasting signals input to the input terminal is divided into a satellite broadcasting signal and a terrestrial broadcasting signal in a branching circuit, and the satellite broadcasting signal is given to the satellite broadcasting output terminal,
The terrestrial broadcast signal is amplified by an amplifier and then given to the above two terrestrial broadcast output terminals through a distribution circuit.

In the above-mentioned structure, when the terrestrial broadcast signal and the satellite broadcast signal are input to the input terminal, the terrestrial broadcast signal is supplied to the first and second terrestrial broadcast output terminals, respectively. If you connect a receiving device such as a television receiver or a video tape recorder, you can obtain amplified terrestrial broadcasting signals in each of those receiving devices, and watch each program with good image quality or record with good image quality. You can Further, if a video tape recorder for satellite broadcast signals is connected to the satellite broadcast output terminal, satellite broadcast programs can be recorded.

[0004]

However, in this conventional booster, only the terrestrial broadcast signal is output to the first and second terrestrial broadcast output terminals, and only the satellite broadcast signal is output to the satellite broadcast output terminal. Therefore, if a person who is poor in electrical knowledge makes a connection in the above-mentioned use, he or she may accidentally connect a TV receiver or a video tape recorder for a terrestrial broadcast signal to the satellite broadcast output terminal, or a video tape for a satellite broadcast signal. There is a problem that when the recorder is connected to the terrestrial broadcast output terminal, it is easy to make an error that the image cannot be viewed or recorded, respectively.

The booster of the present invention is provided to solve the above-mentioned problems (technical problems) of the prior art. A first object is to provide a booster in which when the terrestrial broadcasting signal and the satellite broadcasting signal are input to the input terminal, the terrestrial broadcasting signal and the satellite broadcasting signal are output to any of the plurality of output terminals. It is to be. The second purpose is that when a plurality of TV receivers or video tape recorders for terrestrial broadcasting signals are connected to respectively receive or record the programs of the terrestrial broadcasting signals, any one can watch or record a favorite program. Is to The third purpose is
When a television receiver or a video tape recorder for a plurality of satellite broadcast signals is connected to receive or record a program of a satellite broadcast signal, it is possible to view or record a desired program. A fourth object is that when a terrestrial broadcasting signal or satellite broadcasting signal television receiver or a video tape recorder is connected for the above-mentioned image reception or recording, even if a person who is poor in electrical knowledge makes a connection, there is no erroneous connection. An object of the present invention is to provide a booster capable of receiving a desired signal. Other objects and advantages will be readily apparent from the drawings and the following description related thereto.

[0006]

In order to achieve the above object, a booster according to the present invention comprises an input terminal for inputting a terrestrial broadcast signal and a satellite broadcast signal and a plurality of input terminals for connecting a receiving device. An output terminal is provided, and between the input terminal and the plurality of output terminals, the terrestrial broadcasting signal and the satellite broadcasting signal input to the input terminal are received and output, and at least one of those broadcasting signals is received. The amplifier unit for amplifying and outputting one of them is connected to a distribution unit for distributing and giving both the terrestrial broadcast signal and the satellite broadcast signal output from the amplifier unit to the plurality of output terminals. .

[0007]

When the terrestrial broadcast signal and the satellite broadcast signal are input to the input terminal, both of these broadcast signals are given to the amplification section. The amplifier outputs all of the broadcast signals and also amplifies and outputs at least one of the broadcast signals. The distributor distributes all broadcast signals output from the amplifiers to a plurality of output terminals and gives them.
Therefore, the target signals can be respectively received by connecting any of the receiving devices for terrestrial broadcasting signals or satellite broadcasting signals to those output terminals.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In the description of the embodiments, the VHF television broadcast signal and the UHF television broadcast signal are also abbreviated as V signal and U signal, respectively, and both are also abbreviated as VU signal. FIG.
In the example, A is a booster, and in this example, is a terrestrial broadcasting signal such as a cable broadcasting signal (10 to 76 MHz), an FM broadcasting signal (76 to 90 MHz), and a V signal (90 to 222 MH).
z) and U signals (470 to 770 MHz) and satellite broadcast signals (950 to 1880 MHz) are input, and only the former is amplified and the latter is output as it is. As the satellite broadcast signal, in this example, a signal from the broadcast satellite (also called a BS signal, the frequency band of which is 1035 to 1335 MHz) and a signal from the communication satellite (C
Also called S signal, its frequency band is 950 to 1880
However, it is also possible to handle only one of them. B
Is a receiving facility for receiving broadcast signals such as the terrestrial broadcast signals and satellite broadcast signals, and C is a receiving device that uses the received broadcast signals.

First, the booster A will be described. Reference numeral 1 denotes a case for accommodating various members in the booster, which may be made of resin, but may be made of metal. A1 is an input terminal for inputting a terrestrial broadcast signal and a satellite broadcast signal, and A2 and A2 'are output terminals for connecting a receiving device. As the input terminal and the output terminal, F-type terminals to which a transmission line such as a coaxial cable can be connected are used, but a structure in which the coaxial cable is directly attached may be used. These terminals are attached to the case so as to be exposed to the outside in order to connect the transmission lines, but they should be provided inside the case so that the transmission lines drawn into the case through the through holes of the case can be connected. May be. A4 is an amplifier, which receives the terrestrial broadcast signal and the satellite broadcast signal input to the input terminal and outputs them, and at least one of these broadcast signals, for example, in the present example, amplifies the entire terrestrial broadcast signal. And output it. A4a indicates its input end and is connected to the input terminal A1. A4b indicates an output terminal. A5 is a distributor for distributing both the terrestrial broadcast signal and the satellite broadcast signal output from the amplifier to the plurality of output terminals, and A5a is an input connected to the output terminal A4b. Terminals A5b and A5b 'indicate output terminals connected to the output terminals A2 and A2', respectively. A6 is a power supply unit for supplying a power supply current for operation to the amplification unit A4. A7 is a current passing portion for passing a DC current for operating the converter in the antenna for satellite broadcasting reception from the output terminals A2, A2 'to the input terminal A1. The DC current receiving end A7a, Connect A7a 'to output terminals A2 and A2' and send end A7b
Are connected to the input terminal A1 respectively.

Next, the amplification section A4 will be described. Reference numeral 2 is a demultiplexing circuit for dividing an incoming broadcast signal into two groups, for example, a terrestrial broadcast signal and a satellite broadcast signal. I am trying to do it. That is, 3 is a low-pass filter exemplified as the first filter, and is 10 to 770 MH.
It has a function of passing only signals in the z frequency band, and passes only the terrestrial broadcasting signals. Reference numeral 4 denotes a high-pass filter exemplified as the second filter, which is 950 to 1
It has a function of passing only a signal in the frequency band of 880 MHz, and passes only the satellite broadcast signal. 5
Is an amplifier circuit, and has a function of amplifying a signal in the band of 10 to 770 MHz by, for example, 30 dB (there may be 20 dB in some cases). 6 is a transmission circuit, 950 to 1880 MH
It has a function of transmitting a signal in the z band with little loss. 7
Is a mixing circuit for combining the signals demultiplexed by the demultiplexing circuit 2 into one, and by using the difference in frequency, they are combined without mutual influence. That is, 8 indicates a low-pass filter exemplified as the third filter, and 9 indicates a high-pass filter exemplified as the fourth filter, which have the same functions as the filters 3 and 4, respectively. The above-mentioned division of the broadcast signal may be divided, for example, into those having different levels that need to be amplified, or may be divided for each bandwidth in which amplification can be performed by one amplifier circuit.

Next, the distributor A5 will be described. Reference numeral 11 denotes a distribution circuit, which has a function of distributing signals in the entire band of 10 to 1880 MHz. Incidentally, reference numerals 12 and 12 'are capacitors, which have a function of passing signals in the above band with little loss and blocking passage of a direct current for operating the converter.

Next, the power supply unit A6 will be described. Reference numeral 14 is a power supply circuit which receives alternating current of commercial frequency and outputs a direct current of 7 V, and supplies the direct current to the amplifier circuit 5 as electric power for its operation. Reference numeral 15 is a power plug, and 16 is a power cord outlet.

Next, the current passing portion A7 will be described. 17, 1
7'is a coil that allows a DC current of about 1A to pass through and 10
It has a function of blocking passage of a high frequency signal of ˜1880 MHz. Reference numerals 18 and 18 'are diodes having a capacity for passing a direct current of about 1A. Further, by connecting the two diodes as shown, when the DC voltage applied to the anode of one diode 18 and the DC voltage applied to the anode of the other diode 18 are different,
Only high voltage direct current is passed through the cathode of the diode 18. Reference numeral 19 is a coil similar to the coil 17. Coil 17,17 'and diode 18,1 as above
By connecting 8'and the coil 19 between the output terminals A2 and A2 'and the input terminal A1, it is possible to pass only the DC current for the converter operation.

In the above booster, 20 indicates the presence of a well-known earth circuit.

Next, the receiving equipment B will be described. 21 is FM
Antenna for receiving radio waves of broadcasting and VHF and UHF television broadcasting, 22 is an antenna for receiving radio waves of satellite broadcasting, and is well known for converting the received satellite broadcasting signal into the frequency of the satellite first intermediate frequency. Equipped with a converter. Reference numeral 23 is a mixer for mixing and outputting the FM broadcast signal and VU signal and the satellite broadcast signal. Reference numeral 24 is a connection cable that can transmit a terrestrial broadcasting signal and a satellite broadcasting signal, and a coaxial cable is used, for example. In addition, a lead-in cable for pulling in a cable broadcasting signal may be connected to the connection cable 24 via a mixer.

Next, the receiving device C will be described. Reference numeral 25 denotes a television receiver for receiving a VU signal, and 26 denotes a video tape recorder (hereinafter abbreviated as VTR) for receiving a satellite broadcast signal and recording the broadcast contents. Reference numeral 27 denotes a connection cable for connecting the above-mentioned receiving device and booster A. In addition to the above-mentioned receiving devices, a tuner for receiving satellite broadcast signals (the output of which is connected to a television receiver for normal VU signals) and both VU signals and satellite broadcast signals can be received. There are various TV receivers, VTRs, VTRs capable of recording VU signals, FM tuners (the output of which is connected to ordinary stereo audio equipment), and cable broadcasting receivers.

Next, in using the above booster, the input terminal A1 is connected to the receiving equipment as shown in the drawing, and the output terminals A2 and A2 'are connected to the devices 25 and 26 shown in the drawing, respectively. To do. Also, plug the power plug 15 into the outlet. Then, the direct current of the power is supplied from the power supply circuit 14 to the amplifier circuit 5, and the circuit 5 operates.

In the above state, the VTR 26 outputs a direct current for operating the converter of the antenna 22. The direct current enters the output terminal A2 ', the coil 17',
The signal is output from the input terminal A1 via the diode 18 'and the coil 19. Then, through the cable 24 and the mixer 23, the antenna 22
Given to the converter of and make it work.

In the case of the above direct current supply, the diode 1
The direct current passing through 8'is blocked by the diode 18 from flowing out to the output terminal A2. Therefore, the television receiver 25 connected to it will not be damaged.

The transmission of the signals received by the antennas 21 and 22 is as follows. The FM broadcast signal and VU signal received by the antenna 21 are given to the input terminal A1 via the mixer 23 and the cable 24. The signal passes through the low pass filter 3, is amplified by the amplifier circuit 5, and passes through the low pass filter 8. Further, the signal is distributed by the distribution circuit 11, and is output to the respective output terminals A2, A2 'via the capacitors 12, 12'. The output signal is used by the television receiver 25 for receiving VHF and UHF television programs.

On the other hand, the satellite broadcast signal received by the antenna 22 is given to the input terminal A1 via the mixer 23 and the cable 24. The signal passes through the high pass filter 4, the transmission circuit 6, and the high pass filter 9. Further, the signal is distributed by the distribution circuit 11, and is output to the respective output terminals A2, A2 'via the capacitors 12, 12'. The output signal is VTR
It will be used to record satellite broadcast programs at 26.

Next, in the booster A, the current passing portion A7
Is configured to connect both output terminals A2, A2 'and the input terminal A1. Therefore, whichever output terminal A2, A2' is connected to a receiving device that outputs a DC current for converter operation, The direct current from it can be sent from the input terminal A1 to operate the converter.

Further, in the booster A, since the FM broadcast signal, the VU signal and the satellite broadcast signal are output to each of the output terminals A2 and A2 'as described above, which output terminal A2, A2' is output.
In addition, a tuner for receiving satellite broadcast signals, a television receiver or VT capable of receiving both VU signals and satellite broadcast signals
Even if any receiving device such as a VTR or FM tuner capable of recording R and VU signals is connected, the receiving device can receive and use a desired signal.

When a receiving device that uses a satellite broadcast signal is connected to each of the output terminals A2 and A2 ', a DC current for operating the converter is sent from each device. in this case,
When the voltage from one receiving device is high and the voltage from the other receiving device is low, the presence of the diodes 18 and 18 'causes only the direct current on the high voltage side to be sent to the input terminal A1 through the diode on that side. To be The diode on the other side prevents the high-voltage direct current from flowing into the other receiving device, and prevents the damage.

Next, in the amplifying section A4, when, for example, only the U signal needs to be amplified and the other signals do not need to be amplified among the various broadcasting signals coming therein, the first filter is used. 3 has a pass band of 470 to 770 MH
z band pass filter is used, a second filter 4 is a band eliminator filter having a stop band of 470 to 770 MHz, and an amplification circuit 5 is 470 to 770M.
It is preferable to use one that can amplify the Hz band.

Next, FIG. 2 shows a different embodiment of the amplifier section, showing an example in which not only the terrestrial broadcast signal is amplified by the amplifier circuit 5, but also the satellite broadcast signal is amplified by the amplifier circuit 31. Is. In this case, the operating circuit DC is supplied from the power supply circuit 14 to the amplifier circuit 31. It should be noted that parts that are functionally identical to or equivalent to those in the previous figure and will not be described in detail will be denoted by the same reference numerals and redundant description will be omitted. (Also, in the following figures and the like, the same reference numerals are given to omit the duplicated explanation in the same way.)

FIG. 3 shows a further different example of the amplifying section and a different embodiment of the means for supplying the operating direct current to the amplifying section. The amplification unit A4 of this example outputs the terrestrial broadcast signal without amplification by passing through the transmission line 32, and outputs only the satellite broadcast signal after being amplified by the amplification circuit 31. Further, when the operation of the amplifier circuit 31 is required, a receiving device for receiving a satellite broadcast signal is connected to one of the output terminals A2 and A2 ', and a direct current for operating the converter is sent. Therefore, the power supply current for operation to the amplifier circuit 31 is connected to the cathode side of the diodes 18, 18 'in the current passing portion A7 so that a part of the direct current sent from the receiving device to the converter is used. It is designed to be carried out from the circuit 33 through the supply line 34.

4 shows an embodiment in which the number of output terminals is different, and an example having three output terminals A2, A2 ', A2 "is shown. In this case, the number of output terminals corresponds to the number of output terminals. , Distributor A5
In, the distribution circuit of three distribution 35 and three capacitors 1
2, 12 ', 12 "are used, and in the current passing portion A7, three coils 17, 17', 17" and three diodes 18, 18 ',
18 "is used. Note that the number of output terminals may be four or more in the same way.

[0029]

As described above, according to the present invention, when a terrestrial broadcast signal and a satellite broadcast signal are input to the input terminal A1, the terrestrial broadcast signal is output to any of the plurality of output terminals A2 and A2 '. And satellite signals are output. Therefore, the output terminals A2, A2 'are connected to a plurality of terrestrial broadcasting signal television receivers 25 or video tape recorders to watch and record desired terrestrial broadcasting programs, or for satellite broadcasting signals, respectively. There is an effect that a television receiver or a video tape recorder 26 can be connected to watch or record a desired satellite broadcast program. Moreover, when those receiving devices are connected to the output terminals A2 and A2 'for receiving such various broadcast signals, the plurality of output terminals A2 and A2' are connected to the terrestrial broadcast signal as described above. Since the satellite signal is output,
No matter which receiving device is connected to which output terminal A2 or A2 ', the broadcasting signal required by each receiving device can be obtained. Therefore, even if a person who is unfamiliar with electrical knowledge makes a connection, there is an easiness in use that the respective target signals can be received without misconnection.

[Brief description of drawings]

FIG. 1 is a block circuit diagram.

FIG. 2 is a partial view showing another embodiment of the amplifier section.

FIG. 3 is a partial view showing a further different embodiment of the amplification unit.

FIG. 4 is a partial view showing an embodiment in which the number of output terminals is different.

[Explanation of symbols]

 A1 Input terminal A2, A2 'Output terminal A4 Amplifier section A5 Distribution section

Claims (1)

[Claims] 1. An input terminal for inputting a terrestrial broadcast signal and a satellite broadcast signal, and a plurality of output terminals for connecting a receiving device, respectively, between the input terminal and the plurality of output terminals. Is an amplifier that receives the terrestrial broadcast signal and the satellite broadcast signal input to the input terminal and outputs them, and amplifies and outputs at least one of the broadcast signals, and the terrestrial signal output from the amplifier. A booster characterized by being connected to a distributor for distributing and supplying both the broadcast signal and the satellite broadcast signal to the plurality of output terminals.