JP2006253833A

JP2006253833A - Amplifier for television reception

Info

Publication number: JP2006253833A
Application number: JP2005064307A
Authority: JP
Inventors: Yoshihiro Harada; 義弘原田
Original assignee: Maspro Denkoh Corp
Current assignee: Maspro Denkoh Corp
Priority date: 2005-03-08
Filing date: 2005-03-08
Publication date: 2006-09-21

Abstract

<P>PROBLEM TO BE SOLVED: To provide an amplifier for amplifying mixed signals of signals different in frequency which enables the user to selectively switch two ways of usage for the level compensation and for the demultiplexing output for generating the demultiplexed output. <P>SOLUTION: The amplifier 1 is provided with an input terminal, an amplification means 13 for amplifying the mixed signals; a first transmission path for passing the mixed signals amplified in the amplification means; a demultiplexing means 18 for demultiplexing the mixed signals, amplified in the amplification means respectively to the signals of a plurality of different frequency bands; a second transmission path composed of an input part of a distribution means and an output part for outputting signals of prescribed frequency bands among a plurality of the output parts; a selection means, which makes the first transmission path and the second transmission path selectively switchable, after its input side has been connected to the amplification means and outputs the signals passing the first transmission path or the second transmission path to the output side; and output terminals provided by the same number as the demultiplexing number of the demultiplexing means 18. The output side of the selection means 15 is connected with a first output terminal in the output terminals, and the other output terminals, excluding the first output terminal, are connected respectively to the remaining output parts of the distribution means. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は，主にテレビ受信用に利用されるテレビ受信用増幅器に関し，詳しくはそのテレビ受信用増幅器の回路構成に関する。
The present invention relates to a television reception amplifier mainly used for television reception, and more particularly to a circuit configuration of the television reception amplifier.

従来の増幅器は，それぞれ異なる周波数帯の複数の信号の混合信号を入力して，所定レベルまで増幅する増幅手段と，この増幅部に接続されて，１つの入力側とこの入力側に切換接続される２つの出力側を有する第１の切換手段と，この第１の切換手段の第１の出力側に供給された前記混合信号をそれぞれ異なる周波数帯の信号に分波する分波手段と，第１の切換手段の第２の出力側に供給された前記混合信号を前記分波数と同数に分配する分波手段と，前記分波数と同数設けられそれぞれ第１及び第２の入力側とこれら入力側に切換接続される１つの出力側を有する複数の切換手段と，これら複数の切換手段の出力側にそれぞれ接続された複数の出力部とを具備し，前記複数の切換手段の各第１の入力側には前記分波手段の各第２の入力側には前記分配手段の各分配出力が供給され，第１の切換手段及び前記複数の切換手段が連動して切り換えられるように構成されている。
（例えば，特許文献１参照）
A conventional amplifier receives a mixed signal of a plurality of signals in different frequency bands and amplifies them to a predetermined level, and is connected to this amplifying unit, and is connected to one input side and this input side. First switching means having two output sides, demultiplexing means for demultiplexing the mixed signal supplied to the first output side of the first switching means into signals of different frequency bands, Demultiplexing means for distributing the mixed signal supplied to the second output side of one switching means in the same number as the demultiplexing number, and the same number of demultiplexing numbers as the first and second input sides and these inputs, respectively. A plurality of switching means having one output side that is switched and connected to the side, and a plurality of output sections respectively connected to the output sides of the plurality of switching means, and each first of the plurality of switching means On the input side, each second input side of the branching means Each distribution output of the distribution means is supplied, the first switching means and said plurality of switching means is configured to be switched interlocked.
(For example, see Patent Document 1)

実用新案第２６０１２１９号公報Utility Model No. 2601219

しかし，近年，従来の地上放送に加えて，ＢＳ放送やＣＳ放送といった衛星からの電波を受信した信号を，一本の同軸ケーブルで宅内に引き込むシステムが提案されており，この場合は例えばＶＨＦ帯，ＵＨＦ帯，ＢＳ・１１０°ＣＳ−ＩＦ帯と順に周波数配列させて混合信号として引き込み，各テレビ端子にテレビやチューナーを設置することによって全ての放送を楽しむことが考えられる。
このようなシステムにおいて，テレビやチューナーは少なくともＵＨＦ入力端子とＢＳ・１１０°ＣＳ−ＩＦ入力端子が備えられている場合があり，信号を一本の同軸ケーブル引き込んだ場合，分波器を必要とする。
従来の増幅器によれば，１台の機器でありながら，分配出力又は分波出力を切り換えて使うことができるので，各分波出力を必要とする機器がそれぞれ１台ずつあるような場合にも，それぞれ複数台あるような場合でも対応することができるといった利点があった。
ところがこのような受信システムを考える場合，伝送する周波数帯は，近年放送が開始された２．６ＧＨｚ帯の電波を使う衛星ディジタル放送までを受信して伝送しようとすると，２．６ＧＨｚ帯までの広帯域に亘って伝送する必要があるので，引込み線が長くなったり，分配器を多くしようとしたりすることによって減衰量が大きくなり，その減衰量を補償するための増幅器が必要に成ってくる場合が有り，従来例に示す増幅器のように，混合信号を分配回路を介して出力する回路構成ではレベル補償用としては使用できなかった。
また，スイッチを３つ備えた実施にあっては，夫々の目的に合わせてスイッチ操作を行う必要があり，この連動させての操作が複雑になって，操作ミスを生じる恐れがあった。更にＰＩＮダイオードで切換回路を構成した実施例にあっては回路構成が複雑になるといった問題があった。
そこで本願においては，こうした問題点を解決するためになされたものであり，
その目的は，異なる周波数が混合された超広帯域の周波数帯のテレビ信号を受信するシステムに適したレベル補償用の増幅器を提供することにある。
他の目的は，異なる周波数の信号の分波出力を必要とする機器に適した増幅装置を提供することにある。
他の目的は，異なる周波数の信号の混合信号用であって，レベル補償用と，分波出力生じさせる分波出力用と，の２様の使用が選択的に切換可能な増幅器を提供することにある。
However, in recent years, in addition to conventional terrestrial broadcasts, a system has been proposed in which signals received from satellites such as BS broadcasts and CS broadcasts are drawn into a home using a single coaxial cable. , UHF band, BS · 110 ° CS-IF band in order, and pulling in as a mixed signal, and installing a television or tuner at each TV terminal can be considered to enjoy all broadcasting.
In such a system, a television or tuner may be equipped with at least a UHF input terminal and a BS · 110 ° CS-IF input terminal. When a signal is drawn into one coaxial cable, a duplexer is required. To do.
According to the conventional amplifier, even though it is a single device, it can be used by switching between distributed output or demultiplexed output, so even when there is one device that requires each demultiplexed output. , There was an advantage that even if there are multiple units, it can be handled.
However, when considering such a receiving system, the frequency band to be transmitted is a wide band up to 2.6 GHz band if it is intended to receive and transmit up to satellite digital broadcasting using 2.6 GHz band radio waves that have recently started broadcasting. Therefore, if the lead-in line becomes longer or the number of distributors is increased, the amount of attenuation increases, and an amplifier for compensating for the amount of attenuation may become necessary. Yes, it cannot be used for level compensation in a circuit configuration in which a mixed signal is output via a distribution circuit like the amplifier shown in the conventional example.
Further, in the implementation with three switches, it is necessary to perform the switch operation in accordance with each purpose, and this interlocking operation becomes complicated and there is a possibility of causing an operation error. Further, in the embodiment in which the switching circuit is configured by the PIN diode, there is a problem that the circuit configuration becomes complicated.
Therefore, in the present application, it was made to solve such problems,
An object of the present invention is to provide an amplifier for level compensation suitable for a system that receives television signals in an ultra-wideband frequency band in which different frequencies are mixed.
Another object is to provide an amplifying apparatus suitable for a device that requires demultiplexing output of signals having different frequencies.
Another object of the present invention is to provide an amplifier capable of selectively switching between two types of use for a mixed signal of signals of different frequencies, for level compensation and for a demultiplexing output that generates a demultiplexing output. It is in.

上記課題を解決するために，請求項１の発明は，それぞれ異なる周波数の信号の混合信号を増幅する増幅器において，
入力端子と，上記混合信号を増幅する増幅手段と，該増幅手段において増幅された混合信号を通過させる第１の伝送経路と，上記増幅手段において増幅された混合信号をそれぞれ異なる複数の周波数帯の信号に分波する分波手段を備え，該分配手段の入力部と，複数の出力部のうち，所定の周波数帯の信号を出力する出力部とからなる第２の伝送経路と，前記増幅手段に入力側を接続されて，前記第１の伝送経路と前記第２の伝送経路とを選択的に切換可能とし，前記第１の伝送経路若しくは前記第２の伝送経路を通過した信号を出力側に出力する選択手段と，前記分波手段の分波数と同じ数だけ設けられた出力端子と，を具備し，
前記選択手段の出力側は，前記出力端子の内の第１の出力端子と接続され，前器分配手段の前記第２の伝送経路の出力部を除く出力部には，前記第１の出力端子を除く他の出力端子がそれぞれ接続される。
In order to solve the above problems, the invention of claim 1 is an amplifier that amplifies a mixed signal of signals having different frequencies.
An input terminal, an amplifying means for amplifying the mixed signal, a first transmission path for passing the mixed signal amplified by the amplifying means, and the mixed signal amplified by the amplifying means in a plurality of different frequency bands. Demultiplexing means for demultiplexing the signal, a second transmission path comprising an input unit of the distribution unit and an output unit for outputting a signal in a predetermined frequency band among the plurality of output units; and the amplification unit Connected to the input side, the first transmission path and the second transmission path can be selectively switched, and a signal passing through the first transmission path or the second transmission path is output. Selecting means for outputting to the output terminal, and output terminals provided in the same number as the demultiplexing number of the demultiplexing means,
The output side of the selection means is connected to a first output terminal of the output terminals, and the output section excluding the output section of the second transmission path of the front distributor means has the first output terminal. The other output terminals except for are connected respectively.

請求項２の発明は，請求項１に記載のテレビ受信用増幅器において，前記入力端子と前記増幅手段の入力側との間に設けられた，前記入力端子から入力された前記混合信号を通過し直流電源を阻止するコンデンサーと，直流電源を通過し前記混合信号を阻止するチョークコイルからなる電源重畳回路と，前記増幅手段の出力側と前記選択手段の入力側との間に設けられた，前記増幅手段において所定レベルまで増幅された混合信号を通過し直流電源を阻止するコンデンサーと，直流電源を通過し前記増幅手段から出力された混合信号を阻止するチョークコイルからなる電源分離回路と，から成る電流通過手段を備えると共に，前記第１の伝送経路と前記第２の伝送経路は，それぞれ所定の周波数帯のテレビ信号を通過すると共に直流電源を通過可能とすることによって，選択された伝送線路にかかわらず，端末側から同軸ケーブルを介して前記第１の出力端子に供給される直流電源を，入力端子へ電流通過可能に構成。
According to a second aspect of the present invention, in the television receiver amplifier according to the first aspect, the mixed signal input from the input terminal provided between the input terminal and the input side of the amplifying means is passed. A capacitor for blocking a DC power supply, a power superimposing circuit consisting of a choke coil that passes through the DC power supply and blocks the mixed signal, and provided between the output side of the amplification means and the input side of the selection means, A capacitor that passes the mixed signal amplified to a predetermined level in the amplifying means and blocks the DC power supply; and a power supply separation circuit that includes a choke coil that passes through the DC power supply and blocks the mixed signal output from the amplifying means. In addition to current passing means, the first transmission path and the second transmission path each pass a television signal of a predetermined frequency band and a DC power source. By enabling, irrespective of the selected transmission line, the DC power supplied to the first output terminal via a coaxial cable from the terminal, the current can pass through the structure to the input terminal.

請求項３の発明は，請求項１に記載のテレビ受信用増幅器において，前記入力端子と前記増幅手段の入力側との間に設けられた，前記入力端子から入力された前記混合信号を通過し直流電源を阻止するコンデンサーと，直流電源を通過し前記混合信号を阻止するチョークコイルからなる電源重畳回路と，前記増幅手段の出力側と前期選択手段の入力側との間に設けられた，前記増幅手段において所定レベルまで増幅された混合信号を通過し直流電源を阻止するコンデンサーと，直流電源を通過し前記増幅手段から出力された混合信号を阻止するチョークコイルからなる電源分離回路と，から成る電流通過手段を備えると共に，前記第１の伝送経路と前記第２の伝送経路は，それぞれ所定の周波数帯のテレビ信号を通過すると共に直流電源を通過可能とし，第１の伝送経路を選択した時は，端末側から同軸ケーブルを介して前記第１の出力端子に供給される直流電源を入力端子へ電流通過可能に，第２の伝送経路を選択した時は，端末側から同軸ケーブルを介して前記第１の出力端子以外の他の出力端子の内の少なくとも１つの出力端子から入力端子へ電流通過可能に構成した。
According to a third aspect of the present invention, in the television receiver amplifier according to the first aspect, the mixed signal input from the input terminal provided between the input terminal and the input side of the amplifying means is passed. A capacitor for blocking a DC power supply, a power superimposing circuit comprising a choke coil passing through the DC power supply and blocking the mixed signal, and provided between the output side of the amplification means and the input side of the previous selection means, A capacitor that passes the mixed signal amplified to a predetermined level in the amplifying means and blocks the DC power supply; and a power supply separation circuit that includes a choke coil that passes through the DC power supply and blocks the mixed signal output from the amplifying means. In addition to current passing means, the first transmission path and the second transmission path each pass a television signal of a predetermined frequency band and a DC power source. When the first transmission path is selected, the second transmission path is selected so that the DC power supplied from the terminal side to the first output terminal via the coaxial cable can pass current to the input terminal. In this case, a current can be passed from at least one of the output terminals other than the first output terminal to the input terminal via a coaxial cable from the terminal side.

請求項４の発明は，請求項１又は請求項２に記載のテレビ受信用増幅器において，前記混合信号は第１の周波数帯の信号と，該第１の周波数帯より周波数の高い周波数帯である第２の周波数帯の信号とからなり，前記分波手段は前記第１の周波数帯の信号と前記第２の周波数帯の信号との２つの異なる周波数帯の信号に分波するように構成され，前記第１の出力端子は，前記第１の伝送経路を介して前記混合信号を出力するか，前記第２の伝送経路を介して前記第２の周波数帯の信号を出力するかを前記選択手段によって選択可能とし，前記第１の出力端子から出力される信号が第２の周波数帯となるように前記選択手段を選択した時は，前記他の出力端子が前記第１の周波数帯を出力するように構成したことを特徴とした。
According to a fourth aspect of the present invention, in the television receiver amplifier according to the first or second aspect, the mixed signal is a signal in a first frequency band and a frequency band having a higher frequency than the first frequency band. And the demultiplexing means is configured to demultiplex into signals of two different frequency bands, ie, the signal of the first frequency band and the signal of the second frequency band. The first output terminal selects whether to output the mixed signal via the first transmission path or to output the signal of the second frequency band via the second transmission path. When the selection means is selected so that the signal output from the first output terminal is in the second frequency band, the other output terminal outputs the first frequency band. It was configured to do so.

請求項５の発明は，請求項１又は請求項３に記載のテレビ受信用増幅器において，前記混合信号は第１の周波数帯の信号と，該第１の周波数帯より周波数の高い周波数帯である第２の周波数帯の信号とからなり，前記分波手段は前記第１の周波数帯の信号と前記第２の周波数帯の信号との２つの異なる周波数帯の信号に分波するように構成され，前記第１の出力端子は，前記第１の伝送経路を介して前記混合信号を出力するか，前記第２の伝送経路を介して前記第１の周波数帯の信号を出力するかを前記選択手段によって選択可能とし，前記第１の出力端子から出力される信号が第１の周波数帯となるように前記選択手段を選択した時は，前記他の出力端子が前記第２の周波数帯を出力するように構成したことを特徴とした。
According to a fifth aspect of the present invention, in the television receiver amplifier according to the first or third aspect, the mixed signal is a signal in a first frequency band and a frequency band having a frequency higher than the first frequency band. And the demultiplexing means is configured to demultiplex into signals of two different frequency bands, ie, the signal of the first frequency band and the signal of the second frequency band. The first output terminal selects whether to output the mixed signal via the first transmission path or to output the signal of the first frequency band via the second transmission path. When the selection means is selected so that the signal output from the first output terminal is in the first frequency band, the other output terminal outputs the second frequency band. It was configured to do so.

請求項６の発明は，請求項４又は請求項５に記載のテレビ受信用増幅器において，前記第１の周波数帯の信号は，少なくとも，地上テレビ放送のＵＨＦ帯の信号である用に構成される。
According to a sixth aspect of the present invention, in the television receiver amplifier according to the fourth or fifth aspect, the first frequency band signal is at least a UHF band signal for terrestrial television broadcasting. .

請求項７の発明は，請求項２乃至請求項６に記載のテレビ受信用増幅器において，前記電源重畳手段と前記電源分離手段との間に切替手段を備え，端末側から供給される直流電源を，入力端子から出力するか出力しないかを選択的に切換可能にした。
According to a seventh aspect of the present invention, in the television receiver amplifier according to any of the second to sixth aspects, a switching means is provided between the power supply superimposing means and the power supply separating means, and a DC power supplied from the terminal side is provided. , Output can be selectively switched from the input terminal.

請求項８の発明は，請求項２乃至請求項７に記載のテレビ受信用増幅器において，前記電源分離回路と前記選択手段との接続点から，前記増幅手段へ直流電源を供給するように構成し，端末側から供給される直流電源で動作するように構成した。
According to an eighth aspect of the present invention, in the television receiver amplifier according to any one of the second to seventh aspects, a DC power is supplied to the amplifying means from a connection point between the power supply separation circuit and the selecting means. It is configured to operate with a DC power source supplied from the terminal side.

請求項９の発明は，請求項１乃至請求項７に記載のテレビ受信用増幅器ＡＣプラグと，該ＡＣプラグを介して供給される商用電源から直流電源を生成する直流電源生成手段と，を備え，
少なくとも，前記増幅手段は前記直流電源生成手段において生成された直流電源で動作するように構成した。
A ninth aspect of the invention includes the television receiving amplifier AC plug according to any one of the first to seventh aspects, and a DC power source generating means for generating a DC power source from a commercial power source supplied via the AC plug. ,
At least the amplifying unit is configured to operate with a DC power source generated by the DC power source generating unit.

請求項1０の発明は，請求項１に記載のテレビ受信用増幅装置において，ＡＣプラグと，該ＡＣプラグを介して供給される商用電源から直流電源を生成する直流電源生成手段と，入力端子と増幅手段との間に設けられ，前記直流電源生成手段において生成された直流電源を通過し，前記混合信号を阻止するチークコイルと，前記混合信号を通過し，前記直流電源を阻止するコンデンサーとから成る電源重畳手段と，を備え，
前記直流電源生成手段は，少なくとも，前記増幅手段と，前記電源重畳手段を介して入力端子から該入力端子に接続された同軸ケーブルに，直流電源を供給するように構成した。
A tenth aspect of the present invention is the television receiving amplifying device according to the first aspect, wherein the AC plug, DC power generating means for generating a DC power from a commercial power supplied via the AC plug, an input terminal, A cheek coil provided between the amplifying means and passing through the direct current power generated by the direct current power generating means and blocking the mixed signal; and a capacitor passing through the mixed signal and blocking the direct current power Power supply superimposing means comprising,
The direct current power generation means is configured to supply direct current power from at least the amplification means and the coaxial cable connected to the input terminal via the power supply superimposing means.

請求項１１の発明は，請求項１０に記載のテレビ受信用増幅器は，前記直流電源生成手段と前記電源重畳手段との間に切替手段を備え，前記直流電源を入力端子から出力するか出力しないかを選択的に切換可能にした。
According to an eleventh aspect of the present invention, the television receiving amplifier according to the tenth aspect includes a switching means between the DC power supply generating means and the power supply superimposing means, and outputs or does not output the DC power supply from an input terminal. Can be switched selectively.

請求項１の発明によれば，それぞれ異なる周波数の信号の混合信号を増幅する増幅器において，
入力端子と，上記混合信号を増幅する増幅手段と，該増幅手段において増幅された混合信号を通過させる第１の伝送経路と，上記増幅手段において増幅された混合信号をそれぞれ異なる複数の周波数帯の信号に分波する分波手段を備え，該分配手段の入力部と，複数の出力部のうち，所定の周波数帯の信号を出力する出力部とからなる第２の伝送経路と，前記増幅手段に入力側を接続されて，前記第１の伝送経路と前記第２の伝送経路とを選択的に切換可能とし，前記第１の伝送経路若しくは前記第２の伝送経路を通過した信号を出力側に出力する選択手段と，前記分波手段の分波数と同じ数だけ設けられた出力端子と，を具備し，
前記選択手段の出力側は，前記出力端子の内の第１の出力端子と接続され，前器分配手段の前記第２の伝送経路の出力部を除く出力部には，前記第１の出力端子を除く他の出力端子がそれぞれ接続されるように構成したので，
複数のアンテナにおいて受信した，異なる周波数帯の信号を，一本のケーブルで引き込むような場合に適した増幅器であって，長い引き込み線を有する受信システムや，複数の端末においてテレビを見るためにテレビ信号を多数に分配するような場合に，超広帯域に亘る周波数帯のテレビ信号を伝送することによって生じる伝送損失や，レベル差の発生を補償するためのレベル補償用の増幅器として使用できるし，テレビを１つの端末から楽しむような簡単なシステムにおいては，１つの選択手段を操作するだけの簡単な操作で，余分な機材を必要とせずに分波出力で出力可能な増幅器としても使用できるテレビ受信用増幅器を提供できる。
According to the invention of claim 1, in an amplifier for amplifying a mixed signal of signals having different frequencies,
An input terminal, an amplifying means for amplifying the mixed signal, a first transmission path for passing the mixed signal amplified by the amplifying means, and the mixed signal amplified by the amplifying means in a plurality of different frequency bands. Demultiplexing means for demultiplexing the signal, a second transmission path comprising an input unit of the distribution unit and an output unit for outputting a signal in a predetermined frequency band among the plurality of output units; and the amplification unit Connected to the input side, the first transmission path and the second transmission path can be selectively switched, and a signal passing through the first transmission path or the second transmission path is output. Selecting means for outputting to the output terminal, and output terminals provided in the same number as the demultiplexing number of the demultiplexing means,
The output side of the selection means is connected to a first output terminal of the output terminals, and the output section excluding the output section of the second transmission path of the front distributor means has the first output terminal. Since the other output terminals except for are connected to each other,
This amplifier is suitable for the case where signals of different frequency bands received by multiple antennas are drawn with a single cable, and is used for a reception system having a long lead-in line or a television for watching television at multiple terminals. It can be used as an amplifier for level compensation to compensate for transmission loss and level difference caused by transmitting television signals in a frequency band over an ultra-wide band when distributing signals to many. In a simple system where you can enjoy a single device from a single terminal, you can use it as an amplifier that can be used as an amplifier that can output with demultiplexed output without the need for extra equipment. An amplifier can be provided.

請求項２，３の発明によれば，請求項１に記載のテレビ受信用増幅器において，前記入力端子と前記増幅手段の入力側との間に設けられた，前記入力端子から入力された前記混合信号を通過し直流電源を阻止するコンデンサーと，直流電源を通過し前記混合信号を阻止するチョークコイルからなる電源重畳回路と，前記増幅手段の出力側と前記選択手段の入力側との間に設けられた，前記増幅手段において所定レベルまで増幅された混合信号を通過し直流電源を阻止するコンデンサーと，直流電源を通過し前記増幅手段から出力された混合信号を阻止するチョークコイルからなる電源分離回路と，から成る電流通過手段を備えると共に，前記第１の伝送経路と前記第２の伝送経路は，それぞれ所定の周波数帯のテレビ信号を通過すると共に直流電源を通過可能とすることによって，選択された伝送線路にかかわらず，端末側から同軸ケーブルを介して前記第１の出力端子に供給される直流電源を，入力端子へ電流通過可能に構成しするか，第１の伝送経路を選択した時は，端末側から同軸ケーブルを介して前記第１の出力端子に供給される直流電源を，入力端子へ電流通過可能に，第２の伝送経路を選択した時は，端末側から同軸ケーブルを介して前記第１の出力端子以外の他の出力端子の内の少なくとも１つの出力端子から入力端子へ電流通過可能に構成したので，
複数のアンテナにおいて受信した，異なる周波数帯の信号を，一本のケーブルで引き込むような場合に適した増幅器であって，長い引き込み線を有する受信システムや，複数の端末においてテレビを見るためにテレビ信号を多数に分配するような場合に，超広帯域に亘る周波数帯のテレビ信号を伝送することによって生じる伝送損失や，レベル差の発生を補償するためのレベル補償用の増幅器として使用できるし，テレビを１つの端末から楽しむような簡単なシステムにおいては，１つの選択手段を操作するだけの簡単な操作で，余分な機材を必要とせずに分波出力で出力可能な増幅器としても使用できると共に，所定の出力端子から入力側に電流通過することができ，端末側からこの増幅器を介して，例えばアンテナ側に取り付けられたコンバーター等に電源供給可能なテレビ受信用増幅器を提供できる。
According to a second and third aspect of the invention, in the television receiving amplifier according to the first aspect, the mixing input from the input terminal provided between the input terminal and the input side of the amplifying means. Provided between a capacitor for passing a signal and blocking a DC power supply, a power superimposing circuit consisting of a choke coil passing through a DC power supply and blocking the mixed signal, and an output side of the amplification means and an input side of the selection means A power supply separation circuit comprising: a capacitor that passes the mixed signal amplified to a predetermined level in the amplifying means and blocks a DC power supply; and a choke coil that passes the DC power supply and blocks the mixed signal output from the amplifying means. The first transmission path and the second transmission path each pass a television signal in a predetermined frequency band and are directly connected to each other. By allowing the power to pass, the DC power supplied from the terminal side to the first output terminal via the coaxial cable can be passed through the input terminal regardless of the selected transmission line. When the first transmission path is selected, the second transmission path is selected so that the DC power supplied from the terminal side to the first output terminal via the coaxial cable can pass through the input terminal. In this case, since the terminal side is configured to allow current to pass from at least one of the output terminals other than the first output terminal to the input terminal via the coaxial cable,
This amplifier is suitable for the case where signals of different frequency bands received by multiple antennas are drawn with a single cable, and is used for a reception system having a long lead-in line or a television for watching television at multiple terminals. It can be used as an amplifier for level compensation to compensate for transmission loss and level difference caused by transmitting television signals in a frequency band over an ultra-wide band when distributing signals to many. In a simple system that allows users to enjoy a single device, it can be used as an amplifier that can be output with demultiplexed output without the need for extra equipment by simply operating one selection means. A current can be passed from a predetermined output terminal to the input side, and from the terminal side via this amplifier, for example, a cable attached to the antenna side. It can provide power supply capable television reception amplifier to barter like.

請求項４，５，６の発明によれば，例えば地上放送と衛星放送を受信する場合のように，複数のアンテナにおいて受信した，異なる周波数帯の信号の混合信号を，一本のケーブルで引き込むような場合に適した増幅器であって，長い引き込み線を有する受信システムや，複数の端末においてテレビを見るためにテレビ信号を多数に分配するような場合に，１つの選択手段を操作するだけの簡単な操作で，超広帯域に亘る周波数帯の混合信号を伝送することによって生じる伝送損失や，レベル差の発生を補償するためのレベル補償用の増幅器として使用できるし，テレビを１つの端末から楽しむような簡単なシステムにおいては，余分な機材を必要とせずに簡単にシステムが構築できる分波器を内蔵した増幅器としても使用できると共に，所定の出力端子から入力側に電流通過することができ，端末側に設置した衛星チューナーから，この増幅器を介して，例えばアンテナ側に取り付けられたコンバーター等に電源供給可能な，受信システムの構築の容易なテレビ受信用増幅器を提供できる。
According to the fourth, fifth, and sixth aspects of the invention, for example, when receiving terrestrial broadcasting and satellite broadcasting, a mixed signal of signals of different frequency bands received by a plurality of antennas is drawn with a single cable. This amplifier is suitable for such a case, and it is only necessary to operate one selection means in a receiving system having a long lead-in line or a case where a television signal is distributed to a large number in order to watch television in a plurality of terminals. It can be used as an amplifier for level compensation to compensate for transmission loss and level difference caused by transmitting mixed signals in the frequency band over an ultra-wide band with a simple operation, and enjoy television from one terminal In such a simple system, it can be used as an amplifier with a built-in duplexer that can be easily constructed without requiring extra equipment. Current can be passed from the output terminal to the input side, and it is easy to construct a receiving system that can supply power from a satellite tuner installed on the terminal side to, for example, a converter attached to the antenna side via this amplifier. A television receiving amplifier can be provided.

請求項７の発明によれば，請求項２乃至請求項６に記載のテレビ受信用増幅器において，前記電源重畳手段と前記電源分離手段との間に切替手段を備え，端末側から供給される直流電源を，入力端子から出力するか出力しないかを選択的に切換可能にしたので，
アンテナ側のコンバーター等の機器に供給する電源を供給する電源装置を，アンテナと増幅器との間に介設することもでき，受信システムの構築の汎用性の高いテレビ受信用増幅器を提供することができる。
According to a seventh aspect of the present invention, in the television receiver amplifier according to any one of the second to sixth aspects, the switching means is provided between the power supply superimposing means and the power supply separating means, and the direct current supplied from the terminal side is provided. Since the power supply can be selectively switched between output and non-output from the input terminal,
It is possible to provide a power receiving device for supplying power to equipment such as a converter on the antenna side between the antenna and the amplifier, and to provide a television receiving amplifier having high versatility for constructing a receiving system. it can.

請求項８の発明によれば，請求項２乃至請求項７に記載のテレビ受信用増幅器において，前記電源分離回路と前記選択手段との接続点から，前記増幅手段へ直流電源を供給するように構成し，端末側から供給される直流電源で動作するように構成したので，
端末側から増幅器の電源供給が可能となるので，設置工事の簡単なテレビ受信用増幅器を提供できる。
According to an eighth aspect of the present invention, in the television receiver amplifier according to any one of the second to seventh aspects, a DC power is supplied to the amplifying unit from a connection point between the power source separation circuit and the selecting unit. Since it is configured to operate with DC power supplied from the terminal side,
Since it is possible to supply power to the amplifier from the terminal side, it is possible to provide a TV receiving amplifier that is easy to install.

請求項９の発明によれば，請求項１乃至請求項７に記載のテレビ受信用増幅器ＡＣプラグと，該ＡＣプラグを介して供給される商用電源から直流電源を生成する直流電源生成手段と，を備え，
少なくとも，前記増幅手段は前記直流電源生成手段において生成された直流電源で動作するように構成したので，
商用電源から増幅器の動作電源を生成することから，収納ボックスなどに簡単に取り付けられるテレビ受信用増幅器を提供できるのである。
According to the invention of claim 9, the television receiving amplifier AC plug according to claim 1 to claim 7, and a DC power supply generating means for generating a DC power supply from a commercial power supply supplied via the AC plug, With
Since at least the amplifying means is configured to operate with a DC power source generated by the DC power source generating means,
Since the operational power supply of the amplifier is generated from the commercial power supply, it is possible to provide a television receiver amplifier that can be easily attached to a storage box or the like.

請求項1０の発明によれば，請求項１に記載のテレビ受信用増幅装置において，ＡＣプラグと，該ＡＣプラグを介して供給される商用電源から直流電源を生成する直流電源生成手段と，入力端子と増幅手段との間に設けられ，前記直流電源生成手段において生成された直流電源を通過し，前記混合信号を阻止するチークコイルと，前記混合信号を通過し，前記直流電源を阻止するコンデンサーとから成る電源重畳手段と，を備え，
前記直流電源生成手段は，少なくとも，前記増幅手段と，前記電源重畳手段を介して入力端子から該入力端子に接続された同軸ケーブルに，直流電源を供給するように構成したので，
商用電源から増幅器の動作電源を生成することから，電流通過回路の構成が簡単に成り，安価なテレビ受信用増幅器を提供できる。
According to the invention of claim 10, in the television receiving amplifying device according to claim 1, an AC plug, a DC power generation means for generating a DC power from a commercial power supplied via the AC plug, and an input A cheek coil provided between the terminal and the amplifying means and passing through the DC power generated by the DC power generating means and blocking the mixed signal; and a capacitor passing through the mixed signal and blocking the DC power Power supply superimposing means consisting of
Since the DC power supply generating means is configured to supply DC power to at least the amplifying means and the coaxial cable connected to the input terminal via the power supply superimposing means,
Since the operating power supply of the amplifier is generated from the commercial power supply, the configuration of the current passing circuit is simplified, and an inexpensive television receiving amplifier can be provided.

請求項１１の発明によれば，請求項１０に記載のテレビ受信用増幅器は，前記直流電源生成手段と前記電源重畳手段との間に切替手段を備え，前記直流電源を入力端子から出力するか出力しないかを選択的に切換可能にしたので，
例えば地上放送だけを受信しているシステムで有っても，スイッチ操作１つで出力端子に接続した端末側から入力端子に接続したアンテナ側に電流通過が可能となるので，簡単に衛星アンテナを追加でき，システムの拡充が容易に可能なテレビ受信用増幅器を提供できる。
According to an eleventh aspect of the present invention, the television receiving amplifier according to the tenth aspect includes a switching means between the DC power supply generating means and the power supply superimposing means, and outputs the DC power from an input terminal. Since output can be selectively switched,
For example, even in a system that receives only terrestrial broadcasting, current can be passed from the terminal connected to the output terminal to the antenna connected to the input terminal with a single switch operation. It is possible to provide a television receiver amplifier that can be added and the system can be easily expanded.

以下に，本発明を具体化した実施形態の例を，図面を基に詳細に説明する。
図１は本発明に係る増幅器の第１の実施形態を示すブロック図である。図２（ａ）は混合信号の周波数配列を示し，（ｂ）は分波器の周波数特性を示す一例である。図３，図４，図５，図６，図７，図８は本発明に係る他の増幅器の実施例を示すブロック図である。図９，１０，１１は第２の実施形態を示すブロック図である。図１２，１３は本願のテレビ受信用増幅器を用いた受信システムを示す。
Hereinafter, an example of an embodiment embodying the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing a first embodiment of an amplifier according to the present invention. 2A shows the frequency arrangement of the mixed signal, and FIG. 2B is an example showing the frequency characteristics of the duplexer. 3, FIG. 4, FIG. 5, FIG. 6, FIG. 7 and FIG. 8 are block diagrams showing other embodiments of the amplifier according to the present invention. 9, 10 and 11 are block diagrams showing the second embodiment. 12 and 13 show a receiving system using the television receiving amplifier of the present application.

図１及び図２を用いて本願に係るテレビ受信用増幅器１について説明する。２は入力端子であり，図示されないアンテナで受信した，一本の同軸ケーブルで引き込まれる，異なる周波数の信号の混合信号であるテレビ信号を入力するための接続端子である。この入力端子２は例えばコンデンサーとコイルから成る，前記混合信号を通過帯域とするフィルタ手段１１と接続されている。
次にこのフィルタ手段１１の出力側には増幅手段１３が接続されている。この増幅手段１３は増幅素子としてのトランジスタやＩＣ等から成る高周波増幅回路であり，前記フィルタ手段１１を通過した混合信号を所定レベルまで増幅するためのものである。
１４は例えばコンデンサーとコイルとからなるフィルタ手段１４であり，前記増幅手段１３において所定レベルまで増幅されたテレビ信号を選択的に通過させるものである。このフィルタ手段１４には選択手段１５を介して出力端子４が接続されている。
A television receiving amplifier 1 according to the present application will be described with reference to FIGS. Reference numeral 2 denotes an input terminal, which is a connection terminal for inputting a television signal, which is a mixed signal of signals of different frequencies and received by a single coaxial cable, received by an antenna (not shown). This input terminal 2 is connected to a filter means 11 composed of, for example, a capacitor and a coil and having the mixed signal as a pass band.
Next, an amplifying means 13 is connected to the output side of the filter means 11. The amplifying means 13 is a high frequency amplifying circuit composed of a transistor, an IC or the like as an amplifying element, and amplifies the mixed signal that has passed through the filter means 11 to a predetermined level.
Reference numeral 14 denotes filter means 14 composed of, for example, a capacitor and a coil, which selectively allows the television signal amplified to a predetermined level by the amplifying means 13 to pass therethrough. An output terminal 4 is connected to the filter means 14 via a selection means 15.

本願の実施例における選択手段１５は，接触子１５ａ，１５ｂ，１５ｃと，１５ｄ，１５ｅ，１５ｆを有した例えば切替スイッチから成り，接触子１５ａ，１５ｂ，通過線路１６，接触子１５ｅ，１５ｄ，からなる第１の伝送経路と，接触子１５ａ，１５ｃ，分配手段１８における入力部１８ａと所定の周波数帯域を出力する出力部１８ｂの経路，接触子１５ｅ，１５ｆからなる第２の伝送経路とを選択的に切換可能と成るように接続されている。
更に，分波手段１８における入力部１８ａと他の出力部１８ｃから成る経路には接続端子５が接続されて本発明の実施例におけるテレビ受信用増幅器１を構成している。尚，本発明の実施例では分波出力を２つ有する構成例で示したが特に限定されるものではない。
The selection means 15 in the embodiment of the present application includes, for example, a changeover switch having contacts 15a, 15b, 15c and 15d, 15e, 15f, and includes contacts 15a, 15b, a passing line 16, and contacts 15e, 15d. The first transmission path, the contacts 15a and 15c, the path of the input unit 18a in the distributing means 18 and the output unit 18b that outputs a predetermined frequency band, and the second transmission path consisting of the contacts 15e and 15f are selected. So that they can be switched automatically.
Further, a connection terminal 5 is connected to a path formed by the input unit 18a and the other output unit 18c in the demultiplexing means 18 to constitute the television receiving amplifier 1 in the embodiment of the present invention. In the embodiment of the present invention, a configuration example having two demultiplexing outputs is shown, but the present invention is not particularly limited.

即ち，本発明のテレビ受信用増幅器１では，例えば混合信号が，第１の周波数帯の信号と，この第１の周波数帯の信号より高い周波数帯である第２の周波数帯とから成るような場合に有効であるように，通過手段１６は，例えばプリント配線板を構成する誘電体上に備えられた導体で高周波伝送線路を形成したものであり，第１の周波数帯の信号と，この第１の周波数帯の信号より高い周波数帯である第２の周波数帯との広帯域に亘って特性のよい伝送路が形成されていると共に，分波手段１８は，第１の周波数帯の信号と，第２の周波数帯の信号とを相互に影響がなく分波できるように，コンデンサーやコイルから成るフィルタ回路で構成されることによって，第１の周波数帯の信号と第２の周波数帯の信号を混合出力として１つの出力端子から出力するか，第１の周波数帯の信号と第２の周波数帯の信号を分波出力として別々の出力端子から出力するかを切替可能に構成されているのである
That is, in the television receiving amplifier 1 of the present invention, for example, the mixed signal is composed of a signal in the first frequency band and a second frequency band that is a higher frequency band than the signal in the first frequency band. In order to be effective in the case, the passing means 16 is formed by forming a high-frequency transmission line with a conductor provided on a dielectric constituting a printed wiring board, for example. A transmission path with good characteristics is formed over a wide band with a second frequency band, which is a higher frequency band than the signal of the first frequency band, and the demultiplexing means 18 includes a signal of the first frequency band, The signal of the first frequency band and the signal of the second frequency band are obtained by configuring the filter circuit including a capacitor and a coil so that the signal of the second frequency band can be demultiplexed without affecting each other. One output as mixed output Or output from, than is being switchably configured whether output from a separate output terminal signal of the first frequency band and a signal in the second frequency band as a demultiplexed output

尚，図１では，選択手段１５において，第１の伝送経路１６（所謂，混合出力。以下混合出力と記載する。）を選択したときは，出力端子４から混合信号を出力し，第２の伝送経路（所謂，分波出力。以下分波出力と記載する。）を選択したときは，出力端子４から第１の周波数帯を出力し，出力端子５からは第２の周波数帯を出力するように分波器を配設したが，分波出力を選択したときに，出力端子４は第２の周波数帯を，出力端子５は第１の周波数帯を出力するように分波器を配設してもよい。
In FIG. 1, when the selection means 15 selects the first transmission path 16 (so-called mixed output, hereinafter referred to as mixed output), a mixed signal is output from the output terminal 4, and the second When a transmission path (so-called demultiplexing output, hereinafter referred to as demultiplexing output) is selected, the first frequency band is output from the output terminal 4 and the second frequency band is output from the output terminal 5. However, when the demultiplexing output is selected, the output terminal 4 outputs the second frequency band, and the output terminal 5 outputs the first frequency band. You may set up.

次に，図３，４，５を用いて本発明のテレビ受信用増幅装置１の異なる実施例について説明する。この実施例は前記実施例に対して出力端子と入力端子との間を電流通過可能に構成したものであり，前記実施例と同様な構成をなすものには同じ符号を付与し詳細な説明は省略する。
入力端子２とフィルタ手段１１との間には，前記混合信号を通過し，直流電源を阻止するコンデンサー２１ａと，入力端子２と該コンデンサー２１ａとの相互接続点に接続されて，直流電源を通過し前記混合信号を阻止するチョークコイル２２ａとから成る電源重畳手段２０ａが備えられると共に，フィルタ手段１４と選択手段１５との間には，増幅手段１３において所定レベル増幅された混合信号を通過し，直流電源を阻止するコンデンサー２１ｂと，該コンデンサー２１ｂと選択手段１５との相互接続点に接続されて，直流電源を通過し前記混合信号を阻止するチョークコイル２２ｂとから成る電源分離手段２０ｂとを備えており，この電源分離手段２０ｂと前記電源重畳手段２０ａとで電源通過回路１０を構成している。
Next, different embodiments of the television receiving amplifying apparatus 1 of the present invention will be described with reference to FIGS. This embodiment is configured such that a current can pass between the output terminal and the input terminal with respect to the embodiment, and the same reference numerals are given to those having the same configuration as the embodiment, and the detailed explanation is as follows. Omitted.
Between the input terminal 2 and the filter means 11, a capacitor 21a that passes the mixed signal and blocks the DC power supply is connected to an interconnection point between the input terminal 2 and the capacitor 21a, and passes through the DC power supply. A power superimposing means 20a comprising a choke coil 22a for blocking the mixed signal is provided, and the mixed signal amplified by a predetermined level in the amplifying means 13 is passed between the filter means 14 and the selecting means 15, A power supply separating means 20b comprising a capacitor 21b for blocking the DC power supply and a choke coil 22b connected to the interconnection point between the capacitor 21b and the selecting means 15 and passing through the DC power supply and blocking the mixed signal is provided. The power supply separating means 20b and the power supply superimposing means 20a constitute the power supply passage circuit 10.

更に，前記通過回路１６と，分波手段１８における入力部１８ａと所定の周波数帯を出力する出力部１８ｂとの信号経路を，電流通過型に形成することによって，前記電流通過回路１０と前記選択手段１５を介して出力端子４から入力端子２に電流通過可能に構成されている。
尚，図３（ａ），（ｂ）の実施例に示すように，選択手段１５が混合出力を選択しても分波出力を選択しても，出力端子４には前記第２の周波数帯の信号が出力されるように構成されているので，選択手段１５の切替操作にかかわらず出力端子４から入力端子２へ電流通過可能に構成されている。
また，この実施例では出力端子４は常に電流通過端子として使用することから，前記電源分離手段２０ｂを増幅手段１３と選択手段１５との間に介設する変わりに，前記選択手段１５の出力側と出力端子４との間に介設してもよく，この場合は，選択手段１５に電流を通過させることがなく，高周波信号だけを通過させれば良いので，選択手段１５は安価な部品を使用することができる。このブロック図を図４に示す。
図５は前記第２の周波数帯の信号が，混合出力の場合は出力端子４から，分波出力の場合は出力端子５から出力されるように構成されているので，選択手段１５の選択操作と連動して，出力端子４ら入力端子２へ電流通過するか，若しくは，出力端子５から入力端子２へ電流通過するように形成されている。
Furthermore, the current passing circuit 10 and the selection circuit are formed by forming a signal path between the passing circuit 16 and the input unit 18a in the branching means 18 and the output unit 18b that outputs a predetermined frequency band in a current passing type. A current can be passed from the output terminal 4 to the input terminal 2 via the means 15.
As shown in the embodiments of FIGS. 3A and 3B, the output terminal 4 has the second frequency band regardless of whether the selection means 15 selects the mixed output or the demultiplexed output. Therefore, the current can be passed from the output terminal 4 to the input terminal 2 regardless of the switching operation of the selection means 15.
In this embodiment, since the output terminal 4 is always used as a current passing terminal, the output side of the selection means 15 is replaced with the power supply separation means 20b interposed between the amplification means 13 and the selection means 15. May be interposed between the output terminal 4 and the output terminal 4. In this case, the selection means 15 may pass only a high-frequency signal without passing a current through the selection means 15. Can be used. This block diagram is shown in FIG.
FIG. 5 shows that the second frequency band signal is output from the output terminal 4 in the case of mixed output and from the output terminal 5 in the case of demultiplexed output. In conjunction with this, current is passed from the output terminal 4 to the input terminal 2 or current is passed from the output terminal 5 to the input terminal 2.

即ち，本発明の実施例における電流通過回路１０は，図示されていない端末側におかれた，例えば衛星チューナー，専用電源部等から同軸ケーブルを介して供給される直流電源を，アンテナに備えさせた例えば周波数変換部（コンバーター）等に供給するために利用されるものであって，このため第２の周波数帯の信号を出力する端子（言い換えれば，前記衛星チューナや専用電源部を接続する端子）から電源供給できるようにするものである。
尚，図６は電流通過回路１０にスイッチ手段２５を設け，電流通過をＯＮ／ＯＦＦできるように構成し，より汎用性を持たせた実施例を示すものである。
In other words, the current passing circuit 10 according to the embodiment of the present invention is provided with a direct current power supply, for example, supplied from a satellite tuner, a dedicated power supply unit or the like via a coaxial cable on the terminal side (not shown). For example, it is used for supplying to a frequency converter (converter) and the like, and for this purpose, a terminal for outputting a signal in the second frequency band (in other words, a terminal for connecting the satellite tuner and the dedicated power supply unit) ).
FIG. 6 shows an embodiment in which the switch means 25 is provided in the current passing circuit 10 so that the current passing can be turned ON / OFF, and the versatility is given.

次に図７に示す実施例について説明する。この実施例では前述の電流通過回路に加えて，端末側から供給される直流電源で，増幅手段１３を動作させるように構成したものであり，前記電源分離手段２０ｂにおける，コンデンサー２１ｂとチョークコイル２２ｂ，選択手段１５の入力側の接触子１５ｂとの相互接続点から電源供給を受けるように構成したものである。
Next, the embodiment shown in FIG. 7 will be described. In this embodiment, in addition to the above-described current passing circuit, the amplifying unit 13 is operated by a DC power source supplied from the terminal side. The capacitor 21b and the choke coil 22b in the power source separating unit 20b are configured. The power supply is received from an interconnection point with the contact 15b on the input side of the selection means 15.

次に図８に示す実施例について説明する。この実施例は図７の実施例と異なり，前述の電流通過回路に加えて，増幅手段１３の電源として，テレビ受信用増幅器に備えさせたＡＣプラグ３０を介して外部の商用電源を取り入れ，該商用電源から３１に示す直流電源生成手段において直流電源を生成し，この直流電源によって増幅手段１３を動作させるように構成したものである。
Next, the embodiment shown in FIG. 8 will be described. This embodiment differs from the embodiment shown in FIG. 7 in that, in addition to the above-described current passing circuit, an external commercial power supply is taken in via the AC plug 30 provided in the television receiving amplifier as the power supply for the amplifying means 13. A DC power source is generated from a commercial power source by the DC power source generating means 31 shown in FIG. 31, and the amplifying means 13 is operated by this DC power source.

次に本発明の第２の実施形態として図９，１０を参照して説明する。尚，以下の説明では，上記第１の実施形態のテレビ受信用増幅器と同様の構成要素については同一符号を付与し，詳細な説明は省略する。
Next, a second embodiment of the present invention will be described with reference to FIGS. In the following description, components similar to those of the television receiving amplifier of the first embodiment are given the same reference numerals, and detailed description thereof is omitted.

この実施例では，増幅手段１３の電源として，テレビ受信用増幅器に備えさせたＡＣプラグ３０を介して外部の商用電源を取り入れ，該商用電源から３１に示す直流電源生成手段において直流電源を生成し，この直流電源によって増幅手段１３を動作させるように構成すると共に，前記直流電源生成手段３１によって生成される直流電源を入力端子２から出力できるように構成したものである。
入力端子２とフィルタ手段１１の間には，前記混合信号を通過し直流電源を阻止するコンデンサー２１ｃと，入力端子２と該コンデンサー２１ｃとの相互接続点に接続されて，直流電源を通過し前記混合信号を阻止するチョークコイル２２ｃとから成る電源重畳手段２０ｃが備えられている。これによって，電源生成手段３１から出力された直流電源は，チョークコイル２２ｃを介して入力端子２から送出されるのである。
尚，図１０に示すようにチョークコイル２２ｃと電源生成手段３１との間にスイッチ手段２６を設け，電源供給をＯＮ／ＯＦＦ切替ができるように構成してもよい。
In this embodiment, as the power source of the amplifying means 13, an external commercial power source is taken in through the AC plug 30 provided in the television receiving amplifier, and a DC power source is generated from the commercial power source by the DC power source generating means 31. The amplifying unit 13 is configured to operate with this DC power source, and the DC power source generated by the DC power source generating unit 31 can be output from the input terminal 2.
Between the input terminal 2 and the filter means 11, a capacitor 21c that passes the mixed signal and blocks the DC power supply is connected to an interconnection point between the input terminal 2 and the capacitor 21c, passes through the DC power supply and passes through the DC power supply. Power supply superimposing means 20c comprising a choke coil 22c for blocking mixed signals is provided. As a result, the DC power output from the power generation means 31 is sent out from the input terminal 2 via the choke coil 22c.
In addition, as shown in FIG. 10, the switch means 26 may be provided between the choke coil 22c and the power generation means 31 so that the power supply can be switched ON / OFF.

本発明においては実施例１と実施例２を示したが，図６に示す電流通過回路１０にスイッチ手段２５を設け，電流通過をＯＮ／ＯＦＦできるように構成した実施例と，図１０に示すようにチョークコイル２２ｃと電源生成手段３１との間にスイッチ手段２６を設け，電源供給をＯＮ／ＯＦＦ切替ができるように構成した実施例とを組み合わせ，図１１に示す回路を構成してもよい。この場合は，例えばＣＳを受信する場合に，電圧のロー（１１Ｖ）・ハイ（１５Ｖ）で受信する偏波を切り替えるようなシステムでは，スイッチ手段２５を操作して端子側に置かれた衛星チューナーからロー・ハイに対応した直流電源を供給し，この直流電源を出力端子から入力端子に電流通過させ，スイッチ手段２６はＯＦＦとしておく。また，ＢＳ受信の場合のように直流定電圧を供給すればよい場合は，スイッチ手段２５をＯＦＦとし，スイッチ手段２６をＯＮとすることによって，増幅器１から電源供給できるように，電源供給の経路を切替可能にしてもよい。
In the present invention, the first embodiment and the second embodiment are shown, but the switch means 25 is provided in the current passing circuit 10 shown in FIG. 6 so that the current passing can be turned ON / OFF, and FIG. Thus, the circuit shown in FIG. 11 may be configured in combination with the embodiment in which the switch means 26 is provided between the choke coil 22c and the power generation means 31 so that the power supply can be switched ON / OFF. . In this case, for example, when receiving CS, in a system that switches the polarization received at low (11 V) and high (15 V) voltage, the satellite tuner placed on the terminal side by operating the switch means 25 A DC power source corresponding to low and high is supplied from the output terminal, current is passed through the DC power source from the output terminal to the input terminal, and the switch means 26 is turned off. When a DC constant voltage only needs to be supplied as in the case of BS reception, the power supply path is set so that power can be supplied from the amplifier 1 by turning off the switch means 25 and turning on the switch means 26. May be switchable.

ここで本発明のテレビ受信用増幅装置を用いた受信システムについて図１２，１３と図２を用いて説明する。
本願の受信システムはＶＨＦアンテナ５１とＵＨＦアンテナ５２とＢＳ・１１０°ＣＳアンテナ５３（衛星コンバーター５３ａ）とで受信した信号を，それぞれＶＨＦ・ＵＨＦ混合器５５と，ＶＵ・ＣＳ混合器５６で混合して一本の同軸ケーブル引き込むように構成されている。
ここで図２を用いて前記混合信号の構成例を示す。この実施例では前記混合信号は地上放送であるＶＨＦ帯とＵＨＦ帯のテレビ信号と，衛星放送であるＢＳ及び１１０°ＣＳ放送の中間周波周波数帯（右旋偏波ＣＳ−Ｒ及び左旋偏波ＣＳ−Ｌ。以下ＣＳ−Ｒ，ＣＳ−Ｌと記載する。）の信号である。
従ってテレビ受信用増幅器１に備えられた分波手段１８は，ＶＨＦ帯とＵＨＦ帯のテレビ信号からなる前記第１の周波数帯の信号と，ＢＳ，ＣＳ−Ｒ，ＣＳ−Ｌの中間周波帯の信号からなる前記第２の周波数帯の信号とに分波されるように構成されており，本発明のテレビ受信用増幅器１では，前記選択手段１５によって，増幅手段１３において所定レベルまで増幅された混合信号を出力端子４から出力するか，増幅手段において所定レベルまで増幅された混合信号を，ＶＨＦ帯及びＵＨＦ帯から成る第１の周波数帯（９０〜７７０ＭＨｚ）と，ＢＳ，ＣＳ−Ｒ，ＣＳ−Ｌ（１０３２〜２６０２ＭＨｚ）から成る第２の周波数帯とに分波して，それぞれ出力端子４と出力端子５から出力するかを選択的に切替可能に構成されているのである。
Here, a reception system using the television reception amplifying apparatus of the present invention will be described with reference to FIGS.
In the receiving system of the present application, signals received by the VHF antenna 51, the UHF antenna 52, and the BS / 110 ° CS antenna 53 (satellite converter 53a) are mixed by the VHF / UHF mixer 55 and the VU / CS mixer 56, respectively. It is configured to draw a single coaxial cable.
Here, a configuration example of the mixed signal will be described with reference to FIG. In this embodiment, the mixed signal includes the VHF band and UHF band television signals, which are terrestrial broadcasts, and the intermediate frequency band of BS and 110 ° CS broadcasts, which are satellite broadcasts (right-handed polarization CS-R and left-handed polarization CS). -L, hereinafter referred to as CS-R and CS-L).
Therefore, the demultiplexing means 18 provided in the television receiving amplifier 1 is used for the signal of the first frequency band composed of the television signals of the VHF band and the UHF band, and the intermediate frequency band of BS, CS-R, CS-L. In the television receiving amplifier 1 of the present invention, the signal is amplified to a predetermined level by the amplifying means 13 in the television receiving amplifier 1 of the present invention. The mixed signal is output from the output terminal 4 or the mixed signal amplified to a predetermined level by the amplifying means is converted into the first frequency band (90 to 770 MHz) composed of the VHF band and the UHF band, BS, CS-R, CS The second frequency band consisting of −L (1032 to 2602 MHz) is demultiplexed and output from the output terminal 4 and the output terminal 5 can be selectively switched.

図１２はテレビ受信用増幅器１を混合出力として使用するときの受信システムを示す。
アンテナから宅内に引き込まれる同軸ケーブルが長い場合や，複数の部屋でテレビを見るために，分配器を用いてテレビ信号を分配する必要がある場合において，上述の混合信号に示す例のような，例えばＶＨＦの９０ＭＨｚからＣＳ−Ｌの２６００ＭＨｚ帯までに亘る広帯域な信号を伝送する場合，高域側の伝送損失が大きくなり，端末側におけるレベルが低くなったり，低域側のレベルと高域側のレベル差が大きくなったりする。このような場合においては，混合信号に対してレベル補償するための増幅器が必要となるのであるが，本発明のテレビ受信用増幅器１では，選択手段１５によって増幅器の出力が混合出力となるように切り換えれば，簡単にレベル補償用のプリアンプとして動作させることができる。
増幅器１から出力された混合信号は分配器６０によって所定数に分配され，それぞれ分波器によって分波されて，それぞれ地上・ＢＳ・１１０°ＣＳチューナー６３及びテレビ受信機６５に入力される。
FIG. 12 shows a receiving system when the television receiving amplifier 1 is used as a mixed output.
When the coaxial cable drawn into the house from the antenna is long, or when it is necessary to distribute the TV signal using a distributor in order to watch TV in multiple rooms, the example shown in the mixed signal above, For example, when transmitting a wideband signal ranging from 90 MHz of VHF to 2600 MHz band of CS-L, the transmission loss on the high band side becomes large, the level on the terminal side becomes low, the level on the low band side and the high band side The difference in level will increase. In such a case, an amplifier for level compensation of the mixed signal is required. However, in the television receiving amplifier 1 of the present invention, the output of the amplifier becomes a mixed output by the selection means 15. If switched, it can be easily operated as a preamplifier for level compensation.
The mixed signal output from the amplifier 1 is distributed into a predetermined number by the distributor 60, demultiplexed by the demultiplexers, and input to the terrestrial / BS / 110 ° CS tuner 63 and the television receiver 65, respectively.

図１３はテレビ受信用増幅器１を分波出力として使用するときの受信システムを示す。
この受信システムは，アンテナから一本の同軸ケーブルで引き込まれた混合信号を使って，地上放送と衛星放送を一端子で見るようなシステムに最適であり，この場合は，予め分波手段が１８が内蔵させてあるので，増幅器から出力された信号は，それぞれ地上・ＢＳ・１１０°ＣＳチューナー６３のそれぞれの専用端子から入力するだけで良いので，簡単且つ安価に受信システムが構築できるのである。

尚，本発明は上記実施の形態に限定されるものではなく，本発明の趣旨を逸脱しない範囲で各部の構成を適宜に変更して実施することも可能である。
FIG. 13 shows a receiving system when the television receiving amplifier 1 is used as a demultiplexing output.
This receiving system is most suitable for a system in which a terrestrial broadcast and a satellite broadcast are viewed at one terminal using a mixed signal drawn from an antenna with a single coaxial cable. Since the signal output from the amplifier has only to be input from the dedicated terminals of the ground / BS / 110 ° CS tuner 63, a receiving system can be constructed easily and inexpensively.

Note that the present invention is not limited to the above-described embodiment, and the configuration of each part can be appropriately changed and implemented without departing from the spirit of the present invention.

本発明に係る増幅器の第１の実施形態を示すブロック図である。1 is a block diagram showing a first embodiment of an amplifier according to the present invention. （ａ）は混合信号の周波数配列を示し，（ｂ）は分波器の周波数特性を示す一例である。(A) shows the frequency arrangement | sequence of a mixed signal, (b) is an example which shows the frequency characteristic of a splitter. 本発明に係る他の増幅器の実施例を示すブロック図である。It is a block diagram which shows the Example of the other amplifier which concerns on this invention. 本発明に係る他の増幅器の実施例を示すブロック図である。It is a block diagram which shows the Example of the other amplifier which concerns on this invention. 本発明に係る他の増幅器の実施例を示すブロック図である。It is a block diagram which shows the Example of the other amplifier which concerns on this invention. 本発明に係る他の増幅器の実施例を示すブロック図である。It is a block diagram which shows the Example of the other amplifier which concerns on this invention. 本発明に係る他の増幅器の実施例を示すブロック図である。It is a block diagram which shows the Example of the other amplifier which concerns on this invention. 本発明に係る他の増幅器の実施例を示すブロック図である。It is a block diagram which shows the Example of the other amplifier which concerns on this invention. 第２の実施形態を示すブロック図である。It is a block diagram which shows 2nd Embodiment. 第２の実施形態の他の実施例を示すブロック図である。It is a block diagram which shows the other Example of 2nd Embodiment. 第２の実施形態の他の実施例を示すブロック図である。It is a block diagram which shows the other Example of 2nd Embodiment. 本願のテレビ受信用増幅器を用いた受信システムを示す。The receiving system using the television receiving amplifier of this application is shown. 本願のテレビ受信用増幅器を用いた受信システムを示す。The receiving system using the television receiving amplifier of this application is shown.

符号の説明Explanation of symbols

１…テレビ受信用増幅器，２…入力端子，４…出力端子，５…出力端子，１０…電流通過回路，１１…フィルタ手段，１３…増幅手段，１４…フィルタ手段，１５…選択手段，１５ａ〜１５ｆ…接触子，１６…通過回路，１８…分波手段，１８ａ…入力部，１８ｂ・１８ｃ…出力部，１９…，２０ａ…電源重畳手段，２０ｂ…電源分離手段，２１…コンデンサー，２２…チョークコイル，２３・２４…バイパスコンデンサー，２５…スイッチ手段，２６…スイッチ手段，３０…ＡＣプラグ，３１…電源電圧生成手段，５１…ＶＨＦアンテナ，５３…ＵＨＦアンテナ，５３…衛星アンテナ，５３ａ…衛星コンバーター，５５・５６…混合器，６０…分配器，６１・６２…分波器，６３…チューナー，６５…テレビ受信機，
DESCRIPTION OF SYMBOLS 1 ... Television receiver amplifier, 2 ... Input terminal, 4 ... Output terminal, 5 ... Output terminal, 10 ... Current passing circuit, 11 ... Filter means, 13 ... Amplifying means, 14 ... Filter means, 15 ... Selection means, 15a- 15f ... Contact, 16 ... Passing circuit, 18 ... Demultiplexing means, 18a ... Input section, 18b / 18c ... Output section, 19 ..., 20a ... Power supply superimposing means, 20b ... Power supply separating means, 21 ... Condenser, 22 ... Choke Coil, 23.24 ... Bypass capacitor, 25 ... Switch means, 26 ... Switch means, 30 ... AC plug, 31 ... Power supply voltage generating means, 51 ... VHF antenna, 53 ... UHF antenna, 53 ... Satellite antenna, 53a ... Satellite converter 55.56 ... mixer, 60 ... distributor, 61.62 ... demultiplexer, 63 ... tuner, 65 ... TV receiver,

Claims

それぞれ異なる周波数の信号の混合信号を増幅する増幅器において，
入力端子と，上記混合信号を増幅する増幅手段と，該増幅手段において増幅された混合信号を通過させる第１の伝送経路と，上記増幅手段において増幅された混合信号をそれぞれ異なる複数の周波数帯の信号に分波する分波手段を備え，該分配手段の入力部と，複数の出力部のうち，所定の周波数帯の信号を出力する出力部とからなる第２の伝送経路と，前記増幅手段に入力側を接続されて，前記第１の伝送経路と前記第２の伝送経路とを選択的に切換可能とし，前記第１の伝送経路若しくは前記第２の伝送経路を通過した信号を出力側に出力する選択手段と，前記分波手段の分波数と同じ数だけ設けられた出力端子と，を具備し，
前記選択手段の出力側は，前記出力端子の内の第１の出力端子と接続され，前器分配手段の前記第２の伝送経路の出力部を除く出力部には，前記第１の出力端子を除く他の出力端子がそれぞれ接続されたことを特徴としたテレビ受信用増幅器。
In an amplifier that amplifies a mixed signal of signals of different frequencies,
An input terminal, an amplifying means for amplifying the mixed signal, a first transmission path for passing the mixed signal amplified by the amplifying means, and the mixed signal amplified by the amplifying means in a plurality of different frequency bands. Demultiplexing means for demultiplexing the signal, a second transmission path comprising an input unit of the distribution unit and an output unit for outputting a signal in a predetermined frequency band among the plurality of output units; and the amplification unit Connected to the input side, the first transmission path and the second transmission path can be selectively switched, and a signal passing through the first transmission path or the second transmission path is output. Selecting means for outputting to the output terminal, and output terminals provided in the same number as the demultiplexing number of the demultiplexing means,
The output side of the selection means is connected to a first output terminal of the output terminals, and the output section excluding the output section of the second transmission path of the front distributor means has the first output terminal. A TV receiving amplifier, characterized in that the other output terminals other than are connected to each other.

前記入力端子と前記増幅手段の入力側との間に設けられた，前記入力端子から入力された前記混合信号を通過し直流電源を阻止するコンデンサーと，直流電源を通過し前記混合信号を阻止するチョークコイルからなる電源重畳回路と，前記増幅手段の出力側と前記選択手段の入力側との間に設けられた，前記増幅手段において所定レベルまで増幅された混合信号を通過し直流電源を阻止するコンデンサーと，直流電源を通過し前記増幅手段から出力された混合信号を阻止するチョークコイルからなる電源分離回路と，から成る電流通過手段を備えると共に，前記第１の伝送経路と前記第２の伝送経路は，それぞれ所定の周波数帯のテレビ信号を通過すると共に直流電源を通過可能とすることによって，前記選択手段によって選択された伝送線路にかかわらず，端末側から同軸ケーブルを介して前記第１の出力端子に供給される直流電源を，入力端子へ電流通過可能に構成したことを特徴とした請求項１に記載のテレビ受信用増幅器。
A capacitor provided between the input terminal and the input side of the amplifying means that passes the mixed signal input from the input terminal and blocks a DC power supply; and passes through the DC power supply and blocks the mixed signal A power supply superimposing circuit comprising a choke coil and a mixed signal, which is provided between the output side of the amplifying means and the input side of the selecting means, is amplified to a predetermined level in the amplifying means and blocks a DC power supply. A current passing means comprising a capacitor and a choke coil that passes through a DC power supply and blocks the mixed signal output from the amplifying means, and includes a current passing means, and the first transmission path and the second transmission. Each of the paths passes through a television signal of a predetermined frequency band and allows a DC power source to pass through, so that the transmission line selected by the selecting means is selected. 2. The television receiver amplifier according to claim 1, wherein the DC power supplied from the terminal side to the first output terminal via the coaxial cable is configured to allow current to pass to the input terminal. .

前記入力端子と前記増幅手段の入力側との間に設けられた，前記入力端子から入力された前記混合信号を通過し直流電源を阻止するコンデンサーと，直流電源を通過し前記混合信号を阻止するチョークコイルからなる電源重畳回路と，前記増幅手段の出力側と前期選択手段の入力側との間に設けられた，前記増幅手段において所定レベルまで増幅された混合信号を通過し直流電源を阻止するコンデンサーと，直流電源を通過し前記増幅手段から出力された混合信号を阻止するチョークコイルからなる電源分離回路と，から成る電流通過手段を備えると共に，前記第１の伝送経路と前記第２の伝送経路は，それぞれ所定の周波数帯のテレビ信号を通過すると共に直流電源を通過可能とし，第１の伝送経路を選択した時は，端末側から同軸ケーブルを介して前記第１の出力端子に供給される直流電源を入力端子へ電流通過可能に，第２の伝送経路を選択した時は，端末側から同軸ケーブルを介して前記第１の出力端子以外の他の出力端子の内の少なくとも１つの出力端子から入力端子へ電流通過可能に構成したことを特徴とした請求項１に記載のテレビ受信用増幅器。
A capacitor provided between the input terminal and the input side of the amplifying means that passes the mixed signal input from the input terminal and blocks a DC power supply; and passes through the DC power supply and blocks the mixed signal A power supply superimposing circuit comprising a choke coil and a mixed signal, which is provided between the output side of the amplification means and the input side of the previous selection means, is amplified to a predetermined level in the amplification means and blocks a DC power supply. A current passing means comprising a capacitor and a choke coil that passes through a DC power supply and blocks the mixed signal output from the amplifying means, and includes a current passing means, and the first transmission path and the second transmission. Each route passes a television signal of a predetermined frequency band and can pass a DC power supply. When the first transmission route is selected, a coaxial cable is connected from the terminal side. When the second transmission path is selected so that the DC power supplied to the first output terminal through the input terminal can pass current to the input terminal, other than the first output terminal via the coaxial cable from the terminal side 2. The television receiving amplifier according to claim 1, wherein a current can be passed from at least one of the other output terminals to the input terminal.

前記混合信号は第１の周波数帯の信号と，該第１の周波数帯より周波数の高い周波数帯である第２の周波数帯の信号とからなり，前記分波手段は前記第１の周波数帯の信号と前記第２の周波数帯の信号との２つの異なる周波数帯の信号に分波するように構成され，前記第１の出力端子は，前記第１の伝送経路を介して前記混合信号を出力するか，前記第２の伝送経路を介して前記第２の周波数帯の信号を出力するかを前記選択手段によって選択可能とし，前記第１の出力端子から出力される信号が第２の周波数帯となるように前記選択手段を選択した時は，前記他の出力端子が前記第１の周波数帯を出力するように構成したことを特徴とした請求項１又は請求項２に記載のテレビ受信用増幅器。
The mixed signal includes a signal in a first frequency band and a signal in a second frequency band that is a frequency band higher in frequency than the first frequency band, and the demultiplexing means includes a signal in the first frequency band. The first output terminal outputs the mixed signal via the first transmission path. The first output terminal is configured to demultiplex the signal into two different frequency band signals, the signal and the second frequency band signal. The selection means can select whether to output the signal of the second frequency band via the second transmission path, and the signal output from the first output terminal is the second frequency band. The television receiving device according to claim 1 or 2, wherein the other output terminal outputs the first frequency band when the selection means is selected so that amplifier.

前記混合信号は第１の周波数帯の信号と，該第１の周波数帯より周波数の高い周波数帯である第２の周波数帯の信号とからなり，前記分波手段は前記第１の周波数帯の信号と前記第２の周波数帯の信号との２つの異なる周波数帯の信号に分波するように構成され，前記第１の出力端子は，前記第１の伝送経路を介して前記混合信号を出力するか，前記第２の伝送経路を介して前記第１の周波数帯の信号を出力するかを前記選択手段によって選択可能とし，前記第１の出力端子から出力される信号が第１の周波数帯となるように前記選択手段を選択した時は，前記他の出力端子が前記第２の周波数帯を出力するように構成したことを特徴とした請求項１又は請求項３に記載のテレビ受信用増幅器。
The mixed signal includes a signal in a first frequency band and a signal in a second frequency band that is a frequency band higher in frequency than the first frequency band, and the demultiplexing means includes a signal in the first frequency band. The first output terminal outputs the mixed signal via the first transmission path. The first output terminal is configured to demultiplex the signal into two different frequency band signals, the signal and the second frequency band signal. The selection means can select whether to output the signal of the first frequency band via the second transmission path, and the signal output from the first output terminal is the first frequency band. 4. The television receiving device according to claim 1, wherein the second output terminal outputs the second frequency band when the selection unit is selected to be amplifier.

前記第１の周波数帯の信号は，少なくとも，地上テレビ放送のＵＨＦ帯の信号であることを特徴とした請求項４又は請求項５に記載のテレビ受信用増幅器。
6. The television receiving amplifier according to claim 4, wherein the signal of the first frequency band is at least a UHF band signal of terrestrial television broadcasting.

前記電源重畳手段と前記電源分離手段との間に切替手段を備え，端末側から供給される直流電源を，入力端子から出力するか出力しないかを選択的に切換可能にしたことを特徴とした請求項２乃至請求項６に記載のテレビ受信用増幅器。
A switching means is provided between the power supply superimposing means and the power supply separating means, and the direct current power supplied from the terminal side can be selectively switched to output from the input terminal or not to output. The television receiving amplifier according to claim 2.

前記電源分離回路と前記選択手段との接続点から，前記増幅手段へ直流電源を供給するように構成し，端末側から供給される直流電源で動作するように構成されたことを特徴とした請求項２乃至請求項７に記載のテレビ受信用増幅器。
The power supply separation circuit and the selection means are configured to supply DC power to the amplifying means from a connection point, and are configured to operate with DC power supplied from the terminal side. The television receiving amplifier according to any one of claims 2 to 7.

ＡＣプラグと，該ＡＣプラグを介して供給される商用電源から直流電源を生成する直流電源生成手段と，を備え，
少なくとも，前記増幅手段は前記直流電源生成手段において生成された直流電源で動作するように構成したことを特徴とした請求項１乃至請求項７に記載のテレビ受信用増幅器。
An AC plug, and a DC power generation means for generating a DC power from a commercial power supplied via the AC plug,
8. The television receiving amplifier according to claim 1, wherein at least the amplifying unit is configured to operate with a DC power source generated by the DC power source generating unit.

ＡＣプラグと，該ＡＣプラグを介して供給される商用電源から直流電源を生成する直流電源生成手段と，入力端子と増幅手段との間に設けられ，前記直流電源生成手段において生成された直流電源を通過し，前記混合信号を阻止するチークコイルと，前記混合信号を通過し，前記直流電源を阻止するコンデンサーとから成る電源重畳手段と，を備え，
前記直流電源生成手段は，少なくとも，前記増幅手段と，前記電源重畳手段を介して入力端子から該入力端子に接続された同軸ケーブルに，直流電源を供給するように構成したことを特徴とした請求項１に記載のテレビ受信用増幅装置。
An AC plug, DC power generation means for generating DC power from commercial power supplied via the AC plug, DC power supply provided between the input terminal and the amplification means, and generated by the DC power generation means A power superimposing means comprising: a cheek coil that passes through the mixed signal and blocks the mixed signal; and a capacitor that passes through the mixed signal and blocks the DC power source,
The DC power generation means is configured to supply DC power to at least the amplifying means and a coaxial cable connected to the input terminal via the power superimposing means. Item 4. The television receiving amplifier according to Item 1.

前記直流電源生成手段と前記電源重畳手段との間に切替手段を備え，前記直流電源を入力端子から出力するか出力しないかを選択的に切換可能にしたことを特徴とした請求項１０に記載のテレビ受信用増幅器。
The switching means is provided between the DC power supply generating means and the power supply superimposing means, and the DC power supply can be selectively switched to be output from an input terminal or not. TV receiver amplifier.