JP2006229886A - Amplifying device for television receiving, and television receiving system - Google Patents

Amplifying device for television receiving, and television receiving system Download PDF

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JP2006229886A
JP2006229886A JP2005044590A JP2005044590A JP2006229886A JP 2006229886 A JP2006229886 A JP 2006229886A JP 2005044590 A JP2005044590 A JP 2005044590A JP 2005044590 A JP2005044590 A JP 2005044590A JP 2006229886 A JP2006229886 A JP 2006229886A
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television
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JP4758111B2 (en
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Toshihiro Sugiura
敏博 杉浦
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Maspro Denkoh Corp
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<P>PROBLEM TO BE SOLVED: To provide an amplifying device for television receiving which can cope with rapid variance of input level and whose dynamic range is wide. <P>SOLUTION: A first amplifying part and a second amplifying part are equipped with signal attenuating means and amplification means, respectively are connected by using one coaxial cable. The first amplifying part and the second amplifying part are operated by second supply voltage supplied from a terminal side through the coaxial cable. In the second amplifying part, an automatic gain regulation means is installed which extracts a part of a television signal from output of a second amplifying means and forms a second control signal, and a second signal attenuating means with which the second amplifying part was equipped is controlled by control voltage of the automatic gain regulation means. Furthermore, a pulse signal formation means to form a pulse signal based on the automatic gain regulation means is installed. In the first amplifying part, a first control voltage formation means is installed to which a pulse signal is supplied from the pulse signal formation means through a transmission line, and which forms first control voltage which controls a first signal attenuating means from the pulse signal. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は，主にテレビ放送受信用に利用されるテレビ受信用増幅装置に関し，詳しくは主に移動体に利用され，地上ディジタル放送を受信するための増幅装置，及び，これを用いた受信システムに関する。
The present invention relates to a television receiving amplifying apparatus mainly used for receiving a television broadcast, and more specifically, an amplifying apparatus mainly used for a mobile body and receiving terrestrial digital broadcasting, and a receiving system using the same. About.

従来からテレビ受信用増幅装置は，テレビ放送用のアンテナの近傍に取付けられて使用するものや，テレビ等の端末側装置の近傍に取付けられるものがあった。前者はアンテナの近傍に取付けることになるため，テレビの画像を見ながら利得調整等の作業をするためには工事者一人では無理があり，作業効率が著しく悪いものであった。
一方後者は，アンテナと増幅装置との間に介設した同軸ケーブルの伝送損失によって，増幅装置への入力レベルが低下しＣ／Ｎが劣化してしまう場合があった。そこで，このような問題点を解決するために，増幅装置をアンテナ近傍に設置する第１の増幅部と，端末側装置の近傍に設置する第２の増幅部とに分けたものが提案されおり，テレビアンテナで受信された信号は，同軸ケーブルを介して第１の増幅部に入力される。入力された信号は切換手段であるリレーでもって，第１の増幅器若しくは減衰器が選択されてから，電源分離フィルタを通過後に第１の増幅部から出力される。この選択は第２の増幅部に備えさせたスイッチの入り切りによって，この第２の増幅部に備えさせた電源から第２の増幅部の電源分離フィルタ，同軸ケーブル，第１の増幅部の電源分離フィルタを通してリレーに電源が入り切りされ，これによる当該リレーの切換えによって行われる。
更に第２の増幅部に備えさせた電源からは，前記第１の増幅器及び前記第２の増幅部に備えさせた第２の増幅器にも最適な電源が供給される。こうして第１の増幅部において増幅された受信信号は，同軸ケーブルを介して前記第２の増幅部に入力される。この入力信号は電源分離フィルタを通過後，可変減衰器で適宜利得調整されてから第２の増幅器で増幅された後に第２の増幅部から出力され，テレビ受像機２３に供給される。
従ってこの実施例では，テレビ受像機を見ながら利得調整ができるばかりでなく，スイッチの操作で増幅装置のダイナミックレンジを広げることができるので，電界強度が大きく異なる地域用に共通に使用できるテレビ受信用増幅装置が提供されている。
（例えば特許文献１参照）
Conventionally, television receiving amplifying devices have been used in the vicinity of an antenna for television broadcasting, and others have been installed in the vicinity of a terminal side device such as a television. Since the former is installed near the antenna, it is impossible for one builder to adjust the gain while watching the image on the television, and the work efficiency is extremely poor.
On the other hand, in the latter case, the input level to the amplifying device is lowered and C / N may be deteriorated due to transmission loss of the coaxial cable interposed between the antenna and the amplifying device. Therefore, in order to solve such a problem, a device in which an amplification device is divided into a first amplification unit installed in the vicinity of the antenna and a second amplification unit installed in the vicinity of the terminal side device has been proposed. The signal received by the television antenna is input to the first amplifying unit via the coaxial cable. The input signal is output from the first amplifying unit after passing through the power source separation filter after the first amplifier or attenuator is selected by the relay as the switching means. This selection is performed by turning on and off the switch provided in the second amplifying unit, so that the power supply separation filter of the second amplifying unit, the coaxial cable, and the power supply separation of the first amplifying unit are separated from the power supply provided in the second amplifying unit. The power is turned on and off to the relay through the filter, and the relay is switched by this.
Furthermore, an optimum power source is also supplied from the power source provided in the second amplifying unit to the first amplifier and the second amplifier provided in the second amplifying unit. The reception signal amplified in the first amplifying unit in this way is input to the second amplifying unit via a coaxial cable. This input signal passes through the power supply separation filter, is appropriately gain-adjusted by the variable attenuator, is amplified by the second amplifier, is output from the second amplifier, and is supplied to the television receiver 23.
Therefore, in this embodiment, not only can the gain be adjusted while watching the television receiver, but also the dynamic range of the amplifying device can be expanded by operating the switch. An amplifying device is provided.
(For example, see Patent Document 1)

特開平６−３２６５３４号公報JP-A-6-326534

しかし，従来のＴＶ受信用増幅装置を用いて，例えばＵＨＦ帯で開始される地上ディジタル放送を受信することを考えると，テレビ放送が２０１１年に完全にディジタル化されるまで，従来の地上アナログ放送とのサイマル放送となり，このため，今現在における電波状態から，新たにＵＨＦ帯のチャンネルが増えたり，アナログ受信，ディジタル受信の相互に影響が出ないように対策をするために，地上ディジタル放送波の送信電力を徐々に増力したりすることになり，受信状況が変わる。これによって，テレビ受信用増幅装置には今まで以上に多チャンネルの信号が入力されたり，入力レベルが高くなることになり，増幅装置に過大レベルの入力信号が入力され，最悪の場合，増幅装置が歪んで映像に妨害を与えることになる。
However, considering receiving a terrestrial digital broadcast that starts in the UHF band, for example, using a conventional TV reception amplifying device, a conventional terrestrial analog broadcast until the television broadcast is completely digitized in 2011. For this reason, digital terrestrial broadcast waves are used to prevent the increase in UHF band channels from the current radio wave conditions and the mutual influence between analog reception and digital reception. The transmission power is gradually increased, and the reception status changes. As a result, a multi-channel signal is input to the TV receiving amplifying device or the input level becomes higher than before, and an excessive level input signal is input to the amplifying device. Will be distorted and disturb the video.

ところで，地上ディジタル放送は高画質・高音質な放送ばかりでなく，データ放送などのサービスが受けられるのであるが，それらの利用方法の１つとして，例えば車等の移動体において，地上ディジタル放送を楽しむことが考えられる。このような場合，地上ディジタル用のアンテナを車のルーフ等に設置して，地上ディジタル放送用のチューナーなどの端末側装置を車内やトランクルーム等に設置し，運転席のダッシュボードや，シート等に設置された液晶テレビで見るような受信システムが考えられる。このシステムでは，アンテナからの同軸ケーブルは車内に引き込む必要があるので，テレビアンテナと端末側装置との間に介設される伝送線路は，車体のラインに合わせて配線し易くするために，可曲性に優れ，且つ，車内への引き込みが容易なように，細径の同軸ケーブルを使うことが適している。しかし，細径の同軸ケーブルは，一般的にホーム共同受信システムに用いられる５Ｃ相当の同軸ケーブルに対して伝送損失が大きく，その値は使用する周波数帯が高いほど大きくなることから，細径の同軸ケーブルを使用することにより，端末側装置（例えば，地上ディジタル放送用チューナー）に入力される信号レベルが低下し，これによって受信のＣ／Ｎ特性が劣化することになる。
By the way, terrestrial digital broadcasting can receive services such as data broadcasting as well as high-quality and high-quality broadcasting. As one of those usage methods, for example, terrestrial digital broadcasting can be performed on a mobile object such as a car. It can be considered to have fun. In such a case, a digital terrestrial antenna is installed on the roof of the car, and a terminal device such as a terrestrial digital broadcast tuner is installed in the car or in the trunk room. A receiving system such as that seen on an installed LCD TV is conceivable. In this system, the coaxial cable from the antenna needs to be pulled into the car, so the transmission line interposed between the TV antenna and the terminal side device can be routed easily in line with the body line. It is suitable to use a coaxial cable with a small diameter so that it has excellent curvature and can be easily pulled into the vehicle. However, a small-diameter coaxial cable generally has a larger transmission loss than a coaxial cable equivalent to 5C used in a home joint reception system, and its value increases as the frequency band used increases. By using the coaxial cable, the signal level input to the terminal-side device (for example, a terrestrial digital broadcast tuner) is lowered, thereby deteriorating the C / N characteristics of reception.

そこで，アンテナと端末側装置との間にテレビ受信用増幅装置を介設して，安定的に受信をする方法が考えられるのであるが，Ｃ／Ｎを良好に保つには，増幅装置をアンテナ給電部に内蔵させたり，若しくはアンテナの近傍に設置したりすることが必要となる。ところが増幅度の高い増幅装置を，アンテナの近傍に配設すれば，発振する場合があるといった問題が有ったり，発振の問題が改善されたとしても，増幅度を上げるために増幅回路の構成部品が多くなったり，シールド性などの向上のために，ケースの構造体が複雑になったりすることによって，結果的に増幅装置の外形が大きくなり，コストアップとなるばかりでなく，車両のルーフなどに設置し難いものになってしまうといった問題があった。
In view of this, a method for stably receiving television by interposing an amplifying device for TV reception between the antenna and the terminal side device is conceivable. To maintain a good C / N, the amplifying device is connected to the antenna. It is necessary to install it in the power feeding section or install it in the vicinity of the antenna. However, if an amplification device with a high degree of amplification is arranged near the antenna, there is a problem that oscillation may occur, or even if the oscillation problem is improved, the configuration of the amplification circuit is required to increase the degree of amplification. As the number of parts increases and the case structure becomes complex due to improvements in shielding properties, the outer shape of the amplifying device increases as a result, resulting in an increase in cost and a vehicle roof. There was a problem that it would be difficult to install.

また，増幅装置を従来例のように，第１の増幅部と第２の増幅部とに構成して，第１の増幅部と第１の増幅部とを同軸ケーブルで接続するように構成すれば，Ｃ／Ｎの劣化の少ないテレビ受信用増幅装置が出来るのであるが，従来例に示すような回路構成にあっては，地上ディジタル放送波の送信電力などがフルパワーでない地域や，安定的に出されていない（例えば，送信電力が規定の値に達していない場合）地域において使用できるように最適な状態に設置されていても，地上放送における２０１１年以降の完全ディジタル化において，多チャンネル化や送信電力の増力化がなされた時には，増幅装置に過大入力が入力されて，増幅装置の入力がオーバーすることが考えられる。また，車のような移動体での使用においては，短時間の間に電界強度が大きく変化する場合があることを考えると，これらの入力の変化に対応するために，第２の増幅部に備えられたスイッチ操作を必要とするとき，例えば移動時（即ち運転時）のような時には，瞬時の対応ができないといった問題があった。また，仮に操作可能にするためには，スイッチ操作をやり安いようにするために，第２の増幅部の設置場所が極めて限定されるといった問題があった。
そこで本発明はこのような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，テレビ受信用増幅装置を提供することにある。
他の目的は，特に入力レベルのダイナミックレンジの広いテレビ受信用増幅装置を提供することにある。
他の目的は，第１の増幅部と第２の増幅部と端末側装置とから成るテレビ受信用増幅装置を提供することにある。
他の目的は，車載用に適したテレビ受信用増幅装置を提供することにある。
他の目的は，地上ディジタル放送を移動体で楽しむためのテレビ受信用増幅装置及び受信システムを提供することにある。
Further, as in the conventional example, the amplifying device is configured by a first amplifying unit and a second amplifying unit, and the first amplifying unit and the first amplifying unit are connected by a coaxial cable. For example, a TV reception amplifying device with little deterioration of C / N can be made. However, in the circuit configuration as shown in the conventional example, the transmission power of the terrestrial digital broadcast wave is not full power or stable. Even if it is installed in an optimum state so that it can be used in a region where the transmission power does not reach the specified value (for example, when the transmission power does not reach the specified value), When the power is increased or the transmission power is increased, an excessive input may be input to the amplifying device and the input of the amplifying device may be exceeded. In addition, considering that the electric field strength may change greatly in a short time when used in a mobile object such as a car, the second amplifying unit is used to cope with these input changes. When the provided switch operation is required, for example, when moving (that is, during operation), there is a problem that an instantaneous response cannot be made. Further, in order to enable operation, there is a problem that the installation location of the second amplification unit is extremely limited in order to make the switch operation cheap.
Therefore, the present invention has been made to solve such problems,
The purpose is to provide an amplifying apparatus for television reception.
Another object of the present invention is to provide a television receiving amplifying apparatus having a wide input level dynamic range.
Another object is to provide an amplifying apparatus for television reception including a first amplifying section, a second amplifying section, and a terminal side apparatus.
Another object is to provide an amplifying apparatus for television reception suitable for in-vehicle use.
Another object is to provide a television receiving amplifying apparatus and a receiving system for enjoying terrestrial digital broadcasting on a mobile body.

上記課題を解決するために，請求項１の発明は，テレビ放送波受信用のアンテナにて受信したテレビ信号を増幅して端末側に一本の伝送線路によって伝送するためのテレビ受信用増幅装置において，
該テレビ受信用増幅装置は，前記アンテナ１の給電部に内蔵させるか若しくは該給電部の近傍に介設しアンテナ１からの出力信号を所定レベルまで増幅する第１の増幅部１０と，端末側に設置され，前記第１の増幅部１０から前記伝送線路３を介して送られた出力信号を所定レベルまで増幅する第２の増幅部２０とから成り，
前記第１の増幅部段１０は，少なくとも，第１の入力端子Ｉｎ１から入力されたテレビ信号を減衰させる第１の信号減衰手段１２と，前記第１の信号減衰手段１２にて減衰されたテレビ信号を増幅する第１の増幅手段１３と，伝送線路３を介して供給される第２の電源電圧及びパルス信号を第１の出力端子Ｏｕｔ１から取り入れると共に，第１の増幅手段１３において所定レベルまで増幅されたテレビ信号を，第１の出力端子Ｏｕｔ１へ出力するための第１の電源重畳手段１５と，該第１の電源重畳手段１５によって取り入れられる前記第２の電源電圧とパルス信号とを分離するためのパルス信号分離手段１７と，該パルス信号分離手段１７から出力されるパルス信号に対応して，前記第１の信号減衰手段１２を制御するための第１の制御電圧を生成する第１の制御電圧生成手段１８とから成り，
前記第２の増幅部２０は，少なくとも，第２の入力端子Ｉｎ２から入力されたテレビ信号を減衰させる第２の信号減衰手段２２と，前記第２の信号減衰手段２２にて減衰されたテレビ信号を増幅する第２の増幅手段２３と，前記第２の増幅手段２３にて増幅されたテレビ信号を第２の出力端子Ｏｕｔ２側へ出力すると共に，該増幅されたテレビ信号の一部を分岐させる出力分岐手段２４と，端末側から伝送線路４を介して供給される第２の電源電圧を第２の出力端子Ｏｕｔ２から取り入れると共に，前記出力分岐手段２４から出力されるテレビ信号を第２の出力端子Ｏｕｔ２へ出力するための第２の電源重畳手段２５と，前記第２の増幅手段２３による増幅後のテレビ信号が所定レベルとなるように，前記出力分岐手段２４により分岐されたテレビ信号に基づいて前記第２の信号減衰手段２２の減衰量を制御するための第２の制御電圧を生成する第２の自動利得調整手段２７と，該第２の自動利得調整手段２７において生成された第２の制御電圧に対応したパルス信号を生成するパルス信号生成手段２８と，このパルス信号生成手段２８において生成されたパルス信号と前記第２の電源電圧を混合するパルス信号重畳手段２６と，該パルス信号重畳手段２６から出力されるパルス信号と前記第２の電源電圧を，前記第２の入力端子側Ｉｎ２へ出力すると共に，この第２の入力端子Ｉｎ２から入力されたテレビ信号を前記第２の信号減衰手段２２へ出力する第１の増幅部電源信号重畳手段２１と，から成り，
前記第２の増幅部２０及び前記第１の増幅部は前記端末側から伝送線路３，４を介して供給される第２の電源電圧によって動作するように構成され，
前記第１の増幅部１０に備えた第１の信号減衰手段１２は，前記第２の増幅部２０に備えられた前記自動利得調整手段２７から出力される制御電圧に対応し，前記パルス信号生成手段２８で生成されるパルス信号によって，伝送線路を介して制御されるように構成した。 In order to solve the above-mentioned problem, the invention of claim 1 is a television reception amplifying device for amplifying a television signal received by a television broadcast wave receiving antenna and transmitting it to a terminal side by a single transmission line. In
The television reception amplifying apparatus includes a first amplifying unit 10 that is built in the power feeding unit of the antenna 1 or is interposed in the vicinity of the power feeding unit, and amplifies an output signal from the antenna 1 to a predetermined level; And a second amplifying unit 20 for amplifying the output signal sent from the first amplifying unit 10 via the transmission line 3 to a predetermined level,
The first amplifying unit stage 10 includes at least a first signal attenuating means 12 for attenuating a television signal input from the first input terminal In1, and a television attenuated by the first signal attenuating means 12. The first amplifying means 13 for amplifying the signal and the second power supply voltage and the pulse signal supplied via the transmission line 3 are taken in from the first output terminal Out1, and at the first amplifying means 13 to a predetermined level. The first power supply superimposing means 15 for outputting the amplified television signal to the first output terminal Out1, and the second power supply voltage and the pulse signal taken in by the first power supply superimposing means 15 are separated. And a first control power for controlling the first signal attenuating means 12 corresponding to the pulse signal output from the pulse signal separating means 17. It comprises a first control voltage generating means 18 for generating a
The second amplifying unit 20 includes at least a second signal attenuating unit 22 for attenuating a television signal input from the second input terminal In2, and a television signal attenuated by the second signal attenuating unit 22. A second amplifying means 23 for amplifying the signal, and the television signal amplified by the second amplifying means 23 is output to the second output terminal Out2 side, and a part of the amplified television signal is branched. The output branching unit 24 and the second power supply voltage supplied from the terminal side via the transmission line 4 are taken in from the second output terminal Out2, and the television signal output from the output branching unit 24 is output as the second output. Branched by the output branching means 24 so that the second power superimposing means 25 for outputting to the terminal Out2 and the television signal amplified by the second amplifying means 23 are at a predetermined level. A second automatic gain adjusting means 27 for generating a second control voltage for controlling the attenuation amount of the second signal attenuating means 22 based on the Levi signal, and the second automatic gain adjusting means 27 generate the second control voltage. Pulse signal generating means 28 for generating a pulse signal corresponding to the second control voltage, and pulse signal superimposing means 26 for mixing the pulse signal generated in the pulse signal generating means 28 and the second power supply voltage; The pulse signal output from the pulse signal superimposing means 26 and the second power supply voltage are output to the second input terminal side In2, and the television signal input from the second input terminal In2 is output from the second input terminal In2. First amplifier power signal superimposing means 21 for outputting to the second signal attenuating means 22,
The second amplifying unit 20 and the first amplifying unit are configured to operate by a second power supply voltage supplied from the terminal side via transmission lines 3 and 4;
The first signal attenuating means 12 provided in the first amplifying unit 10 corresponds to a control voltage output from the automatic gain adjusting means 27 provided in the second amplifying unit 20, and generates the pulse signal. It is configured to be controlled via the transmission line by the pulse signal generated by the means 28.

請求項２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，複数のアンテナ１，１・・・からの信号を増幅するために該アンテナ１，１・・・と同数の前記第１の増幅部１０．１０・・・が備えられ，夫々の第１の増幅部１０，１０・・・において所定レベルまで増幅された出力信号を混合して一本の伝送線路３で出力する混合器８を介し，前記第２の増幅部２０と接続するように構成され，前記第２の増幅部２０は前記端末側から伝送線路４を介して供給される第２の電源電圧によって動作するように構成され，前記第１の増幅部１０に備えた第１の信号減衰手段１２は，前記第２の増幅部２０に備えられた前記自動利得調整手段２７に対応して生成されるパルス信号から得られる第１の制御信号によって，伝送線路を介して制御されるように構成した。
According to a second aspect of the present invention, in the television receiving amplifying device according to the first aspect, the same number of the first antennas as the antennas 1, 1. Is provided with a single amplifying section 10.10..., Which mixes output signals amplified to a predetermined level in each of the first amplifying sections 10, 10. The second amplifying unit 20 is configured to be connected to the second amplifying unit 20 via a device 8, and the second amplifying unit 20 is operated by a second power supply voltage supplied from the terminal side via the transmission line 4. The first signal attenuating unit 12 provided in the first amplifying unit 10 is configured from a pulse signal generated corresponding to the automatic gain adjusting unit 27 provided in the second amplifying unit 20. The first control signal obtained is controlled via the transmission line. It was configured to be.

請求項３の発明は，複数のテレビ放送波受信用のアンテナ１，１・・・にて受信したテレビ信号を夫々増幅し，その受信信号を選択的に切り換えて端末側に一本の伝送線路によって伝送するダイバーシティー方式のテレビ受信受信用機器において，
該テレビ受信用増幅装置は，複数のアンテナ１，１・・・からの信号を増幅するために該アンテナ１，１・・・と同数の前記第１の増幅部１０，１０・・・と，夫々の第１の増幅部１０，１０・・・において所定レベルまで増幅された受信信号を復調して検波信号を出力する受信部４１，４１・・・と，前記受信信号の信号強度に応じて前記アンテナ切換手段４６へ切換制御信号を送る切換判定手段４５と，該切換判定手段４５に基づいて前記受信信号を切り換えて出力信号として出力する前記アンテナ切換手段４６とから成るアンテナ切換部９と，該アンテナ切換部９から出力された出力信号を所定レベルまで増幅する前記第２の増幅部２０と，から成り，
前記第１の増幅部段１０は，少なくとも，第１の入力端子Ｉｎ１から入力されたテレビ信号を減衰させる第１の信号減衰手段１２と，前記第１の信号減衰手段１２にて減衰されたテレビ信号を増幅する第１の増幅手段１３と，伝送線路３を介して供給される第２の電源電圧及びパルス信号を第１の出力端子Ｏｕｔ１から取り入れると共に，第１の増幅手段１３において所定レベルまで増幅されたテレビ信号を，第１の出力端子Ｏｕｔ１へ出力するための第１の電源重畳手段１５と，該第１の電源重畳手段１５によって取り入れられる前記第２の電源電圧とパルス信号とを分離するためのパルス信号分離手段１７と，該パルス信号分離手段１７から出力されるパルス信号に対応して，前記第１の信号減衰手段１２を制御するための第１の制御電圧を生成する，第１の制御電圧生成手段１８とから成り，
前記第２の増幅部２０は，少なくとも，第２の入力端子Ｉｎ２から入力されたテレビ信号を減衰させる第２の信号減衰手段２２と，前記第２の信号減衰手段２２にて減衰されたテレビ信号を増幅する第２の増幅手段２３と，前記第２の増幅手段２３にて増幅されたテレビ信号を第２の出力端子Ｏｕｔ２側へ出力すると共に，該増幅されたテレビ信号の一部を分岐させる出力分岐手段２４と，端末側から伝送線路４を介して供給される第２の電源電圧を第２の出力端子Ｏｕｔ２から取り入れると共に，前記出力分岐手段２４から出力されるテレビ信号を第２の出力端子Ｏｕｔ２へ出力するための第２の電源重畳手段２５と，前記第２の増幅手段２３による増幅後のテレビ信号が所定レベルとなるように，前記出力分岐手段２４により分岐されたテレビ信号に基づいて前記第２の信号減衰手段２２の減衰量を制御するための第２の制御電圧を生成する第２の自動利得調整手段２７と，該第２の自動利得調整手段２７において生成された第２の制御電圧に対応したパルス信号を生成するパルス信号生成手段２８と，このパルス信号生成手段２８において生成されたパルス信号と前記第２の電源電圧を混合するパルス信号重畳手段２６と，該パルス信号重畳手段２６から出力されるパルス信号と前記第２の電源電圧を，前記第２の入力端子側Ｉｎ２へ出力すると共に，この第２の入力端子Ｉｎ２から入力されたテレビ信号を前記第２の信号減衰手段２２へ出力する第１の増幅部電源信号重畳手段２１と，から成り，
前記第２の増幅部２０及び前記第１の増幅部は前記端末側から伝送線路３，４を介して供給される第２の電源電圧によって動作するように構成され，
前記第１の増幅部１０に備えた第１の信号減衰手段１２は，前記第２の増幅部２０に備えられた前記自動利得調整手段２７から出力される制御電圧に対応し，前記パルス信号生成手段２８で生成されるパルス信号によって，伝送線路を介して制御されるように構成した。
The invention of claim 3 amplifies television signals received by a plurality of television broadcast wave receiving antennas 1, 1,... And selectively switches the received signals to provide a single transmission line on the terminal side. Diversity television receiver / receiver equipment that
The television reception amplifying device includes the same number of the first amplifying units 10, 10... As the antennas 1, 1. In accordance with the signal strength of the reception signals 41, 41,... That demodulate the reception signals amplified to a predetermined level in the respective first amplification units 10, 10,. An antenna switching section 9 comprising a switching determination means 45 for sending a switching control signal to the antenna switching means 46, and the antenna switching means 46 for switching the received signal based on the switching determination means 45 and outputting it as an output signal; The second amplifying unit 20 for amplifying the output signal output from the antenna switching unit 9 to a predetermined level;
The first amplifying unit stage 10 includes at least a first signal attenuating means 12 for attenuating a television signal input from the first input terminal In1, and a television attenuated by the first signal attenuating means 12. The first amplifying means 13 for amplifying the signal and the second power supply voltage and the pulse signal supplied via the transmission line 3 are taken in from the first output terminal Out1, and at the first amplifying means 13 to a predetermined level. The first power supply superimposing means 15 for outputting the amplified television signal to the first output terminal Out1, and the second power supply voltage and the pulse signal taken in by the first power supply superimposing means 15 are separated. And a first control power for controlling the first signal attenuating means 12 corresponding to the pulse signal output from the pulse signal separating means 17. Generating a comprises a first control voltage generating means 18.,
The second amplifying unit 20 includes at least a second signal attenuating unit 22 for attenuating a television signal input from the second input terminal In2, and a television signal attenuated by the second signal attenuating unit 22. A second amplifying means 23 for amplifying the signal, and the television signal amplified by the second amplifying means 23 is output to the second output terminal Out2 side, and a part of the amplified television signal is branched. The output branching unit 24 and the second power supply voltage supplied from the terminal side via the transmission line 4 are taken in from the second output terminal Out2, and the television signal output from the output branching unit 24 is output as the second output. Branched by the output branching means 24 so that the second power superimposing means 25 for outputting to the terminal Out2 and the television signal amplified by the second amplifying means 23 are at a predetermined level. A second automatic gain adjusting means 27 for generating a second control voltage for controlling the attenuation amount of the second signal attenuating means 22 based on the Levi signal, and the second automatic gain adjusting means 27 generate the second control voltage. Pulse signal generating means 28 for generating a pulse signal corresponding to the second control voltage, and pulse signal superimposing means 26 for mixing the pulse signal generated in the pulse signal generating means 28 and the second power supply voltage; The pulse signal output from the pulse signal superimposing means 26 and the second power supply voltage are output to the second input terminal side In2, and the television signal input from the second input terminal In2 is output from the second input terminal In2. First amplifier power signal superimposing means 21 for outputting to the second signal attenuating means 22,
The second amplifying unit 20 and the first amplifying unit are configured to operate by a second power supply voltage supplied from the terminal side via transmission lines 3 and 4;
The first signal attenuating means 12 provided in the first amplifying unit 10 corresponds to a control voltage output from the automatic gain adjusting means 27 provided in the second amplifying unit 20, and generates the pulse signal. It is configured to be controlled via the transmission line by the pulse signal generated by the means 28.

請求項４の発明は，請求項１乃至請求項３に記載のテレビ受信用増幅装置と，少なくとも，前記第２の電源電圧を生成する端末側電源生成手段と，前記第２の増幅部との間に介設される伝送線路からの出力信号を受け入れると共に，前記第２の増幅部に伝送線路を介して第２の電源電圧を送出する端末側重畳手段とを備えて成る端末側装置と，から成るように構成される。
According to a fourth aspect of the present invention, there is provided a television reception amplifying device according to any one of the first to third aspects, at least a terminal-side power generation unit that generates the second power supply voltage, and the second amplification unit. A terminal side device comprising terminal side superimposing means for receiving an output signal from a transmission line interposed therebetween and sending a second power supply voltage to the second amplifying unit via the transmission line; Consists of

請求項５の発明は，請求項１乃至請求項４のテレビ受信用増幅装置と，テレビ受信用のアンテナと，少なくとも前記第１の増幅部と第２の増幅部との間に介設する所定長さの伝送線路と，を予め備えるように構成する。
According to a fifth aspect of the present invention, there is provided the television receiving amplifying device according to any one of the first to fourth aspects, the television receiving antenna, and at least a predetermined portion interposed between the first amplifying unit and the second amplifying unit. A transmission line having a length is provided in advance.

請求項６の発明は，請求項１乃至請求項５に記載のテレビ受信用増幅装置において，少なくとも，前記第１の増幅部と前記第２の増幅部との間，及び，前記第２の増幅部と端末側との間に介設する伝送線路は外形寸法が５ｍｍと同じ若しくはこれより細径の同軸ケーブルを使用するように構成した。
According to a sixth aspect of the present invention, in the television receiving amplifying device according to any one of the first to fifth aspects, at least between the first amplifying unit and the second amplifying unit and the second amplifying unit. The transmission line interposed between the section and the terminal side is configured to use a coaxial cable having an outer dimension equal to or smaller than 5 mm.

請求項７の発明は，請求項１乃至請求項６に記載のテレビ受信用増幅装置において，少なくともテレビ受信用のアンテナと前記第１の増幅部とを車体の外部に装着された表示灯若しくは広告塔に内蔵するように構成した。
According to a seventh aspect of the present invention, there is provided a television receiving amplifying device according to any one of the first to sixth aspects, wherein the display lamp or the advertisement is provided with at least a television receiving antenna and the first amplifying unit mounted outside the vehicle body. It was configured to be built in the tower.

請求項８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装置において，前記アンテナはフィルムアンテナから成るように構成した。
According to an eighth aspect of the present invention, in the television reception amplifying device according to any one of the first to seventh aspects, the antenna is constituted by a film antenna.

請求項９の発明は，請求項１乃至請求項８の何れかに記載のテレビ受信用増幅装置において，前記テレビ受信用増幅装置は地上ディジタル放送受信用であるように構成した。
According to a ninth aspect of the present invention, in the television receiving amplifying device according to any one of the first to eighth aspects, the television receiving amplifying device is configured to receive terrestrial digital broadcasts.

請求項１０の発明は，少なくとも，テレビ放送波受信用のアンテナと，該アンテナにて受信したテレビ信号を増幅して端末側に一本の伝送線路によって伝送する増幅部とから成るテレビ受信用増幅装置を備えたテレビ受信システムにおいて，前記テレビ受信用増幅装置は，請求項１乃至請求項９の何れかに記載のテレビ受信用増幅装置であって，少なくとも，前記第１の増幅部よりアンテナ側は建造物若しくは車両の外部に設置されるように構成した。
According to a tenth aspect of the present invention, there is provided an amplifier for receiving a television set comprising at least an antenna for receiving a television broadcast wave and an amplifying unit for amplifying a television signal received by the antenna and transmitting the signal to the terminal side by a single transmission line. 10. A television receiving system comprising a device, wherein the television receiving amplifying device is the television receiving amplifying device according to any one of claims 1 to 9, wherein at least the first amplifying unit is closer to the antenna side. Is configured to be installed outside the building or vehicle.

請求項１の発明によれば，テレビ放送波受信用のアンテナにて受信したテレビ信号を増幅して端末側に一本の伝送線路によって伝送するためのテレビ受信用増幅装置において，
該テレビ受信用増幅装置は，前記アンテナ１の給電部に内蔵させるか若しくは該給電部の近傍に介設しアンテナ１からの出力信号を所定レベルまで増幅する第１の増幅部１０と，端末側に設置され，前記第１の増幅部１０から前記伝送線路３を介して送られた出力信号を所定レベルまで増幅する第２の増幅部２０とから成り，
前記第１の増幅部段１０は，少なくとも，第１の入力端子Ｉｎ１から入力されたテレビ信号を減衰させる第１の信号減衰手段１２と，前記第１の信号減衰手段１２にて減衰されたテレビ信号を増幅する第１の増幅手段１３と，伝送線路３を介して供給される第２の電源電圧及びパルス信号を第１の出力端子Ｏｕｔ１から取り入れると共に，第１の増幅手段１３において所定レベルまで増幅されたテレビ信号を，第１の出力端子Ｏｕｔ１へ出力するための第１の電源重畳手段１５と，該第１の電源重畳手段１５によって取り入れられる前記第２の電源電圧とパルス信号とを分離するためのパルス信号分離手段１７と，該パルス信号分離手段１７から出力されるパルス信号に対応して，前記第１の信号減衰手段１２を制御するための第１の制御電圧を生成する第１の制御電圧生成手段１８とから成り，
前記第２の増幅部２０は，少なくとも，第２の入力端子Ｉｎ２から入力されたテレビ信号を減衰させる第２の信号減衰手段２２と，前記第２の信号減衰手段２２にて減衰されたテレビ信号を増幅する第２の増幅手段２３と，前記第２の増幅手段２３にて増幅されたテレビ信号を第２の出力端子Ｏｕｔ２側へ出力すると共に，該増幅されたテレビ信号の一部を分岐させる出力分岐手段２４と，端末側から伝送線路４を介して供給される第２の電源電圧を第２の出力端子Ｏｕｔ２から取り入れると共に，前記出力分岐手段２４から出力されるテレビ信号を第２の出力端子Ｏｕｔ２へ出力するための第２の電源重畳手段２５と，前記第２の増幅手段２３による増幅後のテレビ信号が所定レベルとなるように，前記出力分岐手段２４により分岐されたテレビ信号に基づいて前記第２の信号減衰手段２２の減衰量を制御するための第２の制御電圧を生成する第２の自動利得調整手段２７と，該第２の自動利得調整手段２７において生成された第２の制御電圧に対応したパルス信号を生成するパルス信号生成手段２８と，このパルス信号生成手段２８において生成されたパルス信号と前記第２の電源電圧を混合するパルス信号重畳手段２６と，該パルス信号重畳手段２６から出力されるパルス信号と前記第２の電源電圧を，前記第２の入力端子側Ｉｎ２へ出力すると共に，この第２の入力端子Ｉｎ２から入力されたテレビ信号を前記第２の信号減衰手段２２へ出力する第１の増幅部電源信号重畳手段２１と，から成り，
前記第２の増幅部２０及び前記第１の増幅部は前記端末側から伝送線路３，４を介して供給される第２の電源電圧によって動作するように構成され，
前記第１の増幅部１０に備えた第１の信号減衰手段１２は，前記第２の増幅部２０に備えられた前記自動利得調整手段２７から出力される制御電圧に対応し，前記パルス信号生成手段２８で生成されるパルス信号によって，伝送線路を介して制御されるように構成したので，
受信レベルが弱い地域においてもＣ／Ｎの劣化がなく，また，受信レベルが強く増幅装置への入力レベルが増えた場合でも，最適な出力レベルとなるように，自動的に利得調整が動作し安定した受信ができると言った，ダイナミックレンジの広い自動利得調整回路付きのテレビ受信用増幅装置を提供できるのである。
According to the invention of claim 1, in a television reception amplifying device for amplifying a television signal received by a television broadcast wave receiving antenna and transmitting it to the terminal side by a single transmission line,
The television reception amplifying apparatus includes a first amplifying unit 10 that is built in the power feeding unit of the antenna 1 or is interposed in the vicinity of the power feeding unit, and amplifies an output signal from the antenna 1 to a predetermined level; And a second amplifying unit 20 for amplifying the output signal sent from the first amplifying unit 10 via the transmission line 3 to a predetermined level,
The first amplifying unit stage 10 includes at least a first signal attenuating means 12 for attenuating a television signal input from the first input terminal In1, and a television attenuated by the first signal attenuating means 12. The first amplifying means 13 for amplifying the signal and the second power supply voltage and the pulse signal supplied via the transmission line 3 are taken in from the first output terminal Out1, and at the first amplifying means 13 to a predetermined level. The first power supply superimposing means 15 for outputting the amplified television signal to the first output terminal Out1, and the second power supply voltage and the pulse signal taken in by the first power supply superimposing means 15 are separated. And a first control power for controlling the first signal attenuating means 12 corresponding to the pulse signal output from the pulse signal separating means 17. It comprises a first control voltage generating means 18 for generating a
The second amplifying unit 20 includes at least a second signal attenuating unit 22 for attenuating a television signal input from the second input terminal In2, and a television signal attenuated by the second signal attenuating unit 22. A second amplifying means 23 for amplifying the signal, and the television signal amplified by the second amplifying means 23 is output to the second output terminal Out2 side, and a part of the amplified television signal is branched. The output branching unit 24 and the second power supply voltage supplied from the terminal side via the transmission line 4 are taken in from the second output terminal Out2, and the television signal output from the output branching unit 24 is output as the second output. Branched by the output branching means 24 so that the second power superimposing means 25 for outputting to the terminal Out2 and the television signal amplified by the second amplifying means 23 are at a predetermined level. A second automatic gain adjusting means 27 for generating a second control voltage for controlling the attenuation amount of the second signal attenuating means 22 based on the Levi signal, and the second automatic gain adjusting means 27 generate the second control voltage. Pulse signal generating means 28 for generating a pulse signal corresponding to the second control voltage, and pulse signal superimposing means 26 for mixing the pulse signal generated in the pulse signal generating means 28 and the second power supply voltage; The pulse signal output from the pulse signal superimposing means 26 and the second power supply voltage are output to the second input terminal side In2, and the television signal input from the second input terminal In2 is output from the second input terminal In2. First amplifier power signal superimposing means 21 for outputting to the second signal attenuating means 22,
The second amplifying unit 20 and the first amplifying unit are configured to operate by a second power supply voltage supplied from the terminal side via transmission lines 3 and 4;
The first signal attenuating means 12 provided in the first amplifying unit 10 corresponds to a control voltage output from the automatic gain adjusting means 27 provided in the second amplifying unit 20, and generates the pulse signal. Since it is configured to be controlled via the transmission line by the pulse signal generated by the means 28,
Even in areas where the reception level is weak, there is no C / N degradation, and even when the reception level is strong and the input level to the amplifier increases, the gain adjustment automatically operates so that the optimum output level is obtained. It is possible to provide a television receiving amplifying apparatus with an automatic gain adjustment circuit having a wide dynamic range, which is said to be capable of stable reception.

請求項２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，複数のアンテナ１，１・・・からの信号を増幅するために該アンテナ１，１・・・と同数の前記第１の増幅部１０．１０・・・が備えられ，夫々の第１の増幅部１０，１０・・・において所定レベルまで増幅された出力信号を混合して一本の伝送線路３で出力する混合器８を介し，前記第２の増幅部２０と接続するように構成され，前記第２の増幅部２０は前記端末側から伝送線路４を介して供給される第２の電源電圧によって動作するように構成され，前記第１の増幅部１０に備えた第１の信号減衰手段１２は，前記第２の増幅部２０に備えられた前記自動利得調整手段２７に対応して生成されるパルス信号から得られる第１の制御信号によって，伝送線路を介して制御されるように構成したので，
アンテナの指向性を無指向性にでき，安定した受信ができるダイナミックレンジの広い自動利得調整付きのテレビ受信用増幅装置を提供できるのである。。
According to the second aspect of the present invention, in the television reception amplifying device according to the first aspect, the same number of antennas 1, 1... The first amplifying units 10.10... Are provided, and the output signals amplified to a predetermined level in each of the first amplifying units 10, 10. The second amplifying unit 20 is configured to be connected to the second amplifying unit 20 via the mixer 8, and the second amplifying unit 20 is operated by the second power supply voltage supplied from the terminal side via the transmission line 4. The first signal attenuating unit 12 included in the first amplifying unit 10 is configured to generate a pulse corresponding to the automatic gain adjusting unit 27 included in the second amplifying unit 20. The first control signal obtained from the signal passes through the transmission line Since it is configured to be controlled Te,
The antenna directivity can be made omnidirectional, and a TV receiver amplifying apparatus with a wide dynamic range and automatic gain adjustment that can perform stable reception can be provided. .

請求項３の発明によれば，複数のテレビ放送波受信用のアンテナ１，１・・・にて受信したテレビ信号を夫々増幅し，その受信信号を選択的に切り換えて端末側に一本の伝送線路によって伝送するダイバーシティー方式のテレビ受信受信用機器において，
該テレビ受信用増幅装置は，複数のアンテナ１，１・・・からの信号を増幅するために該アンテナ１，１・・・と同数の前記第１の増幅部１０，１０・・・と，夫々の第１の増幅部１０，１０・・・において所定レベルまで増幅された受信信号を復調して検波信号を出力する受信部４１，４１・・・と，前記受信信号の信号強度に応じて前記アンテナ切換手段４６へ切換制御信号を送る切換判定手段４５と，該切換判定手段４５に基づいて前記受信信号を切り換えて出力信号として出力する前記アンテナ切換手段４６とから成るアンテナ切換部９と，該アンテナ切換部９から出力された出力信号を所定レベルまで増幅する前記第２の増幅部２０と，から成り，
前記第１の増幅部段１０は，少なくとも，第１の入力端子Ｉｎ１から入力されたテレビ信号を減衰させる第１の信号減衰手段１２と，前記第１の信号減衰手段１２にて減衰されたテレビ信号を増幅する第１の増幅手段１３と，伝送線路３を介して供給される第２の電源電圧及びパルス信号を第１の出力端子Ｏｕｔ１から取り入れると共に，第１の増幅手段１３において所定レベルまで増幅されたテレビ信号を，第１の出力端子Ｏｕｔ１へ出力するための第１の電源重畳手段１５と，該第１の電源重畳手段１５によって取り入れられる前記第２の電源電圧とパルス信号とを分離するためのパルス信号分離手段１７と，該パルス信号分離手段１７から出力されるパルス信号に対応して，前記第１の信号減衰手段１２を制御するための第１の制御電圧を生成する，第１の制御電圧生成手段１８とから成り，
前記第２の増幅部２０は，少なくとも，第２の入力端子Ｉｎ２から入力されたテレビ信号を減衰させる第２の信号減衰手段２２と，前記第２の信号減衰手段２２にて減衰されたテレビ信号を増幅する第２の増幅手段２３と，前記第２の増幅手段２３にて増幅されたテレビ信号を第２の出力端子Ｏｕｔ２側へ出力すると共に，該増幅されたテレビ信号の一部を分岐させる出力分岐手段２４と，端末側から伝送線路４を介して供給される第２の電源電圧を第２の出力端子Ｏｕｔ２から取り入れると共に，前記出力分岐手段２４から出力されるテレビ信号を第２の出力端子Ｏｕｔ２へ出力するための第２の電源重畳手段２５と，前記第２の増幅手段２３による増幅後のテレビ信号が所定レベルとなるように，前記出力分岐手段２４により分岐されたテレビ信号に基づいて前記第２の信号減衰手段２２の減衰量を制御するための第２の制御電圧を生成する第２の自動利得調整手段２７と，該第２の自動利得調整手段２７において生成された第２の制御電圧に対応したパルス信号を生成するパルス信号生成手段２８と，このパルス信号生成手段２８において生成されたパルス信号と前記第２の電源電圧を混合するパルス信号重畳手段２６と，該パルス信号重畳手段２６から出力されるパルス信号と前記第２の電源電圧を，前記第２の入力端子側Ｉｎ２へ出力すると共に，この第２の入力端子Ｉｎ２から入力されたテレビ信号を前記第２の信号減衰手段２２へ出力する第１の増幅部電源信号重畳手段２１と，から成り，
前記第２の増幅部２０及び前記第１の増幅部は前記端末側から伝送線路３，４を介して供給される第２の電源電圧によって動作するように構成され，
前記第１の増幅部１０に備えた第１の信号減衰手段１２は，前記第２の増幅部２０に備えられた前記自動利得調整手段２７から出力される制御電圧に対応し，前記パルス信号生成手段２８で生成されるパルス信号によって，伝送線路を介して制御されるように構成したので
常に一番強い電波を受信するようにアンテナの受信出力を切り換えることができ，安定した受信ができるダイナミックレンジの広い自動利得調整回路付きのテレビ受信用増幅装置を提供できるのである。
According to the invention of claim 3, the television signals received by the plurality of television broadcast wave receiving antennas 1, 1,... Are each amplified, and the received signals are selectively switched so that one terminal is provided on the terminal side. Diversity-type television receiver / receiver equipment that transmits through transmission lines
The television reception amplifying device includes the same number of the first amplifying units 10, 10... As the antennas 1, 1. In accordance with the signal strength of the reception signals 41, 41,... That demodulate the reception signals amplified to a predetermined level in the respective first amplification units 10, 10,. An antenna switching section 9 comprising a switching determination means 45 for sending a switching control signal to the antenna switching means 46, and the antenna switching means 46 for switching the received signal based on the switching determination means 45 and outputting it as an output signal; The second amplifying unit 20 for amplifying the output signal output from the antenna switching unit 9 to a predetermined level;
The first amplifying unit stage 10 includes at least a first signal attenuating means 12 for attenuating a television signal input from the first input terminal In1, and a television attenuated by the first signal attenuating means 12. The first amplifying means 13 for amplifying the signal and the second power supply voltage and the pulse signal supplied via the transmission line 3 are taken in from the first output terminal Out1, and at the first amplifying means 13 to a predetermined level. The first power supply superimposing means 15 for outputting the amplified television signal to the first output terminal Out1, and the second power supply voltage and the pulse signal taken in by the first power supply superimposing means 15 are separated. And a first control power for controlling the first signal attenuating means 12 corresponding to the pulse signal output from the pulse signal separating means 17. Generating a comprises a first control voltage generating means 18.,
The second amplifying unit 20 includes at least a second signal attenuating unit 22 for attenuating a television signal input from the second input terminal In2, and a television signal attenuated by the second signal attenuating unit 22. A second amplifying means 23 for amplifying the signal, and the television signal amplified by the second amplifying means 23 is output to the second output terminal Out2 side, and a part of the amplified television signal is branched. The output branching unit 24 and the second power supply voltage supplied from the terminal side via the transmission line 4 are taken in from the second output terminal Out2, and the television signal output from the output branching unit 24 is output as the second output. Branched by the output branching means 24 so that the second power superimposing means 25 for outputting to the terminal Out2 and the television signal amplified by the second amplifying means 23 are at a predetermined level. A second automatic gain adjusting means 27 for generating a second control voltage for controlling the attenuation amount of the second signal attenuating means 22 based on the Levi signal, and the second automatic gain adjusting means 27 generate the second control voltage. Pulse signal generating means 28 for generating a pulse signal corresponding to the second control voltage, and pulse signal superimposing means 26 for mixing the pulse signal generated in the pulse signal generating means 28 and the second power supply voltage; The pulse signal output from the pulse signal superimposing means 26 and the second power supply voltage are output to the second input terminal side In2, and the television signal input from the second input terminal In2 is output from the second input terminal In2. First amplifier power signal superimposing means 21 for outputting to the second signal attenuating means 22,
The second amplifying unit 20 and the first amplifying unit are configured to operate by a second power supply voltage supplied from the terminal side via transmission lines 3 and 4;
The first signal attenuating means 12 provided in the first amplifying unit 10 corresponds to a control voltage output from the automatic gain adjusting means 27 provided in the second amplifying unit 20, and generates the pulse signal. Since it is configured to be controlled via the transmission line by the pulse signal generated by the means 28, the receiving output of the antenna can be switched so as to always receive the strongest radio wave, and the dynamic range in which stable reception is possible. It is possible to provide a TV receiving amplifying device with a wide automatic gain adjusting circuit.

請求項４の発明によれば，請求項１乃至請求項３に記載のテレビ受信用増幅装置と，少なくとも，前記第２の電源電圧を生成する端末側電源生成手段３１と，前記第２の増幅部２０との間に介設される伝送線路４からの出力信号を受け入れると共に，前記第２の増幅部２０に伝送線路４を介して第２の電源電圧を送出する端末側重畳手段３２とを備えて成る端末側装置３０と，から成るように構成したので，
例えば，テレビ受像機や地上ディジタル放送の受信をする地上ディジタル放送受信用チューナーのような，端末側装置から電源を供給するシステムに適した自動利得調整回路付きのテレビ受信用増幅装置を提供できる。
According to a fourth aspect of the present invention, the television receiving amplification device according to any one of the first to third aspects, at least the terminal-side power generation means 31 for generating the second power supply voltage, and the second amplification. A terminal-side superimposing means 32 for receiving an output signal from the transmission line 4 interposed between the terminal 20 and the second amplifying part 20 for sending a second power supply voltage to the second amplifier 20 via the transmission line 4; Since it is configured to comprise a terminal-side device 30 provided,
For example, it is possible to provide a television reception amplifying device with an automatic gain adjustment circuit suitable for a system that supplies power from a terminal-side device, such as a television receiver or a terrestrial digital broadcast reception tuner that receives terrestrial digital broadcasts.

請求項５の発明によれば，請求項１乃至請求項４のテレビ受信用増幅装置と，テレビ受信用のアンテナ１と，少なくとも前記第１の増幅部１０と第２の増幅部２０との間に介設する所定長さの伝送線路３と，を予め備えるように構成したので，
配線の簡単な自動利得調整機能付きのテレビ受信用増幅装置を提供できるのである。
According to the invention of claim 5, between the television receiving amplifying device of claims 1 to 4, the television receiving antenna 1, and at least between the first amplifying unit 10 and the second amplifying unit 20. Since the transmission line 3 having a predetermined length interposed in between is configured in advance,
Thus, it is possible to provide a television receiving amplifying device with a simple wiring automatic gain adjustment function.

請求項６の発明によれば，請求項１乃至請求項５に記載のテレビ受信用増幅装置において，少なくとも，前記第１の増幅部１０と前記第２の増幅部２０との間，及び，前記第２の増幅部２０と端末側との間に介設する伝送線路３，４は外形寸法が５ｍｍと同じ若しくはこれより細径の同軸ケーブルを使用するように構成したので，
例えば建物等の建造物や，タクシーやバス等の車内への引き込みが容易にできる，自動利得調整回路付きのテレビ共同受信用増幅装置が提供できるのである。
According to a sixth aspect of the present invention, in the television receiver amplifying device according to any one of the first to fifth aspects, at least between the first amplifying unit 10 and the second amplifying unit 20, and the Since the transmission lines 3 and 4 interposed between the second amplifying unit 20 and the terminal side are configured to use coaxial cables whose outer dimensions are the same as or smaller than 5 mm,
For example, it is possible to provide an amplifying apparatus for joint television reception with an automatic gain adjustment circuit that can be easily pulled into a building such as a building or a car such as a taxi or a bus.

請求項７の発明によれば，請求項１乃至請求項６に記載のテレビ受信用増幅装置において，少なくともテレビ受信用のアンテナ１と前記第１の増幅部１０とを車体の外部に装着された表示灯若しくは広告塔に内蔵するように構成したので，
タクシーやバスにおいて，外観を著しく変えることなく，安定してテレビ放送を受信することができる，自動利得調整回路付きのテレビ共同受信用増幅装置を設置できるのである。
According to the seventh aspect of the present invention, in the television reception amplifying device according to any one of the first to sixth aspects, at least the television reception antenna 1 and the first amplification unit 10 are mounted outside the vehicle body. Since it is configured to be built in the indicator light or advertising tower,
In taxis and buses, it is possible to install a TV joint reception amplifying device with an automatic gain adjustment circuit that can stably receive TV broadcasts without significantly changing the appearance.

請求項８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装置において，前記アンテナ１はフィルムアンテナから成るように構成したので，
安価に製作でき，装着が簡単な，自動利得調整回路付きのテレビ受信用増幅装置を提供できるのである。
According to the invention of claim 8, in the television reception amplifying device according to claims 1 to 7, the antenna 1 is constituted by a film antenna.
This makes it possible to provide an amplifying apparatus for TV reception with an automatic gain adjustment circuit that can be manufactured at low cost and is easy to install.

請求項９の発明によれば，請求項１乃至請求項８の何れかに記載のテレビ受信用増幅装置において，前記テレビ受信用増幅装置は地上ディジタル放送受信用であるように構成したので，
受信レベルが弱い地域においてもＣ／Ｎの劣化がなく，また，受信レベルが強い地域でも安定して受信ができる，自動利得調整回路付きのテレビ受信用増幅装置が提供できる。
また，地上アナログ放送と地上ディジタル放送とのサイマル放送がなされている現状において，最適に受信ができる状態にあっても，例えば地上波のテレビ放送が完全にディジタル化され，地上ディジタル放送だけになったたときに，ＵＨＦ帯のチャンネルが増えて多チャンネル化がなされたり，増力化されたりすることによって，増幅装置への入力レベルが増えた場合であっても，特に切換操作等をしなくとも，最適な出力レベルとなるように自動的に利得調整がなされて，安定した受信ができると言ったダイナミックレンジの広いテレビ受信用増幅装置を提供できるのである。
。
According to the ninth aspect of the present invention, in the television reception amplifying device according to any one of the first to eighth aspects, the television reception amplifying device is configured to receive terrestrial digital broadcasting.
It is possible to provide an amplifying apparatus for receiving television with an automatic gain adjustment circuit that does not deteriorate in C / N even in an area where the reception level is weak and can stably receive in an area where the reception level is strong.
In addition, in the current situation where simultaneous broadcasting of analog terrestrial broadcasting and digital terrestrial broadcasting is being performed, even if reception is optimal, for example, terrestrial television broadcasting is completely digitized and only terrestrial digital broadcasting is achieved. Even if the input level to the amplifying device is increased by increasing the number of channels in the UHF band and increasing the number of channels in the UHF band, the switching operation is not required. Therefore, it is possible to provide a television receiving amplifying device with a wide dynamic range, in which the gain is automatically adjusted so as to obtain an optimum output level, and stable reception is possible.
.

請求項１０の発明によれば，少なくとも，テレビ放送波受信用のアンテナと，該アンテナにて受信したテレビ信号を増幅して端末側に一本の伝送線路によって伝送する増幅部とから成るテレビ受信用増幅装置を備えたテレビ受信システムにおいて，前記テレビ受信用増幅装置は，請求項１乃至請求項９の何れかに記載のテレビ受信用増幅装置であって，少なくとも，前記第１の増幅部よりアンテナ側は建造物若しくは車両の外部に設置されるように構成したので
例えば建物等の建造物や，タクシーやバス等の車内への引き込みが容易にできるテレビ受信用増幅装置を備えたテレビ受信システムが提供できるのである。
According to the tenth aspect of the present invention, a television receiver comprising at least an antenna for receiving a television broadcast wave and an amplifying unit that amplifies a television signal received by the antenna and transmits the amplified signal to the terminal side through a single transmission line. A television reception system including an amplification device for television, wherein the amplification device for television reception is the amplification device for television reception according to any one of claims 1 to 9, and at least from the first amplification unit. Since the antenna side is configured to be installed outside the building or vehicle, for example, a television receiving system equipped with a television receiving amplifying device that can be easily pulled into a building such as a building or a taxi or bus. Can be provided.

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は本願に係るテレビ受信用増幅装置の第１の実施形態を示す概略ブロック図であり，図２は異なる実施例を示す。図３はアンテナを複数本備えた例である。図４は本願に第２の実施形態を示す概略ブロック図である。図５は本願のテレビ受信用増幅装置を車体に取付けた時の概略図である。
Hereinafter, an example of an embodiment embodying the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic block diagram showing a first embodiment of a television receiving amplifier according to the present application, and FIG. 2 shows a different embodiment. FIG. 3 shows an example in which a plurality of antennas are provided. FIG. 4 is a schematic block diagram showing a second embodiment of the present application. FIG. 5 is a schematic view when the television receiving amplification device of the present application is attached to the vehicle body.

本願の第１の実施形態について図１を用いて説明する。この図において１はテレビ放送受信用のアンテナであり，本願の実施例によれば地上ディジタル用のＵＨＦアンテナである。
１０は第１の増幅部であって，アンテナの給電部に内蔵させるか，若しくは給電部の近傍において，同軸ケーブル等を介してアンテナと接続されている。この第１の増幅部１０は，増幅素子としての低雑音なトランジスタやＩＣ等から構成されたプリアンプであって，例えば図示されていない合成樹脂や金属材料等で形成されたケースに，高周波回路を構成したプリント配線板等を収納して成るように構成されている。
アンテナ１で受信された受信信号は，ケースから突設するように取付けられた入力端子Ｉｎ１を介し，増幅部内部に収納された前記プリント配線板と接続されている。高周波増幅回路に入力された受信信号は，一般的には，図には示されないコンデンサーとコイル等とから成る，ＶＨＦ帯の信号を阻止帯域とし，ＵＨＦ帯の信号を通過するように構成されたハイパスフィルタのようなフィルタ手段を介して，第１の増幅手段１３−１に入力さる。
A first embodiment of the present application will be described with reference to FIG. In this figure, reference numeral 1 denotes an antenna for receiving a television broadcast, and according to the embodiment of the present application, it is a terrestrial digital UHF antenna.
Reference numeral 10 denotes a first amplifying unit which is built in the power feeding unit of the antenna or connected to the antenna via a coaxial cable or the like in the vicinity of the power feeding unit. The first amplifying unit 10 is a preamplifier composed of a low-noise transistor, an IC, or the like as an amplifying element. For example, a high-frequency circuit is applied to a case formed of a synthetic resin or a metal material (not shown). It is configured to house the configured printed wiring board and the like.
A received signal received by the antenna 1 is connected to the printed wiring board housed inside the amplifying unit via an input terminal In1 mounted so as to protrude from the case. The received signal input to the high-frequency amplifier circuit is generally configured to pass a UHF band signal with a VHF band signal consisting of a capacitor and a coil not shown in the figure as a stop band. The signal is input to the first amplifying means 13-1 through a filter means such as a high pass filter.

この第１の増幅手段１３−１は，例えば高周波増幅素子としてのトランジスタやＩＣ等によって構成された高周波増幅回路であり，特に低雑音となるように増幅素子の選択やバイアス設計がなされており，この増幅手段１３−１において所定レベルまで増幅された後に，この増幅手段１３−１からの出力信号を所定範囲で減衰させる第１の信号減衰手段１２に入力される。
この第１の信号減衰手段１２は，例えばＰＩＮダイオードからなる所謂π型の減衰器であり，後述の第１の制御電圧に対応した減衰量を得るように構成されている。
The first amplifying means 13-1 is a high-frequency amplifier circuit composed of, for example, a transistor or an IC as a high-frequency amplifying element, and the amplifying element is selected and a bias design is made so as to reduce noise. After being amplified to a predetermined level by the amplifying unit 13-1, the output signal from the amplifying unit 13-1 is input to the first signal attenuating unit 12 that attenuates the signal within a predetermined range.
The first signal attenuating means 12 is a so-called π-type attenuator made of, for example, a PIN diode, and is configured to obtain an attenuation amount corresponding to a first control voltage described later.

次にこの第１の信号減衰手段１２を通過した信号は，更に第１の増幅手段１３−２において所定レベルまで増幅される。この増幅手段も例えば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る。
更にこの増幅手段１３−２には，この増幅手段１３−２の出力に接続されて，高周波信号を通過し直流電圧及び低周波信号を阻止するコンデンサーを介して，該高周波信号を出力端子Ｏｕｔ１に出力すると共に，直流電圧及び低周波信号を通過させ，高周波信号を遮断するチョークコイルを介して，伝送線路３を介して供給される第２の電源電圧及び前記低周波信号としてのパルス信号（後に，詳細に説明する。）を，出力端子Ｏｕｔ１から第１の増幅部１０内に取り入れる第１の電源重畳手段１５が接続されている。
Next, the signal passing through the first signal attenuating means 12 is further amplified to a predetermined level by the first amplifying means 13-2. This amplifying means is also a high-frequency amplifying circuit composed of, for example, a transistor or an IC as an amplifying element.
Further, the amplifying means 13-2 is connected to the output of the amplifying means 13-2 and passes the high frequency signal to the output terminal Out1 through a capacitor that passes the high frequency signal and blocks the DC voltage and the low frequency signal. A second power supply voltage supplied through the transmission line 3 and a pulse signal as the low-frequency signal (later described) are output through a choke coil that passes a DC voltage and a low-frequency signal and blocks a high-frequency signal. , Will be described in detail) is connected to the first power supply superimposing means 15 for taking in the first amplifying unit 10 from the output terminal Out1.

１７は出力端子Ｏｕｔ１から前記第１の電源重畳手段１５を介して取り入れられた前記第２の電源部及びパルス信号を分離するパルス信号分離手段であり，直流電圧を通過しパルス信号を阻止するチョークコイルと，パルス信号を通過し直流電圧を阻止するコンデンサーとから成る。
このパルス信号分離手段１７において分離された前記第２の電源電圧は，少なくとも第１の増幅手段１３−１，１３−２を動作させる電源となるように接続されている。
またパルス信号分離手段１７において分離された前記パルス信号は，該パルス信号に対応して，前記第１の信号減衰手段１２を制御するために，所定範囲で可変する直流電圧である第１の制御電圧を生成する，第１の制御電圧生成手段１８に接続されて入力されており，この第１の制御電圧生成手段１８から出力される第１の制御電圧よって，第１の増幅部１０は自動利得調整付きの増幅器として動作する。
Reference numeral 17 denotes pulse signal separation means for separating the second power supply unit and the pulse signal taken in from the output terminal Out1 via the first power supply superimposing means 15, and a choke that passes the DC voltage and blocks the pulse signal. It consists of a coil and a capacitor that passes the pulse signal and blocks the DC voltage.
The second power supply voltage separated in the pulse signal separation means 17 is connected to be a power supply for operating at least the first amplification means 13-1 and 13-2.
Further, the pulse signal separated in the pulse signal separation means 17 is a first control which is a DC voltage that varies within a predetermined range in order to control the first signal attenuation means 12 in response to the pulse signal. The first amplifying unit 10 is automatically connected to the first control voltage generating means 18 for generating a voltage, and the first amplifying unit 10 is automatically operated by the first control voltage output from the first control voltage generating means 18. Operates as an amplifier with gain adjustment.

２０は第２の増幅部であって，所定長さの同軸ケーブル３を介して端末側に介設された，高周波増幅素子であるトランジスタやＩＣ等から成る高周波増幅回路を，プリント配線板に形成して成る増幅部であり，例えば図には示されていない合成樹脂材や金属材料等から成るケースに収納されている。
同軸ケーブル３を介して第１の増幅部１０から伝送された出力信号は，入力端子Ｉｎ２から増幅部２０に入力される。入力された出力信号は，後に詳述する第１の増幅部電源信号重畳手段２１を介して，図には示されていないプリント配線板に形成されたコンデンサー，コイル等から成る，ＶＨＦ帯を阻止帯域としＵＨＦ帯を通過帯域とするハイパスフィルタ等のフィルタ手段を通過した後に，この出力信号を所定範囲で減衰させる第２の信号減衰手段２２に入力される。
Reference numeral 20 denotes a second amplifying unit, which is formed on a printed wiring board by a high-frequency amplifying circuit made up of a transistor or an IC, which is a high-frequency amplifying element, provided on the terminal side via a coaxial cable 3 having a predetermined length. For example, the amplifying unit is housed in a case made of a synthetic resin material or a metal material not shown in the drawing.
The output signal transmitted from the first amplifying unit 10 via the coaxial cable 3 is input to the amplifying unit 20 from the input terminal In2. The input output signal is blocked by a first amplifier power supply signal superimposing means 21 described in detail later, which is composed of a capacitor, a coil, and the like formed on a printed wiring board not shown in the figure. After passing through a filter means such as a high pass filter having a band and a UHF band as a pass band, the output signal is input to a second signal attenuating means 22 that attenuates the output signal within a predetermined range.

第２の信号減衰手段２２は，例えばＰＩＮダイオードからなる所謂π型の減衰器であり，後述する第２の制御電圧に対応した減衰量を得るように構成されている。
次に第２の信号減衰手段２２を通過した信号は，第２の増幅手段２３において所定レベルまで増幅される。この第２の増幅手段２３は，例えば高周波増幅素子であるトランジスタやＩＣ等によって構成された高周波増幅回路であり，特に出力レベルに余裕を持つ高出力型となるように増幅素子の選択やバイアス設計がなされており，この増幅手段２３において所定レベルまで増幅された後に，分岐出力手段２４に入力される。
The second signal attenuating means 22 is a so-called π-type attenuator composed of, for example, a PIN diode, and is configured to obtain an attenuation amount corresponding to a second control voltage described later.
Next, the signal that has passed through the second signal attenuating means 22 is amplified to a predetermined level by the second amplifying means 23. The second amplifying means 23 is a high-frequency amplifier circuit constituted by, for example, a transistor or an IC that is a high-frequency amplifying element. In particular, the amplifying element is selected and a bias is designed so as to be a high-output type having a margin in output level. After being amplified to a predetermined level by the amplifying means 23, it is input to the branch output means 24.

出力分岐手段２４は本願の実施例では，例えばフェライトコアにポリウレタン線を巻回してなる分岐コイルから成る分岐回路であり，第２の増幅手段２３の出力信号を第２の出力端子Ｏｕｔ２側へ出力すると共に，該増幅されたテレビ信号の一部を分岐端子２４ａに出力するように構成されている。
更にこの出力分岐手段２４の出力には，該出力分岐手段２４から出力されるテレビ信号を第２の出力端子Ｏｕｔ２へコンデンサーを介して出力すると共に，端末側から伝送線路４を介して供給される第２の電源電圧を通過させ，前記テレビ信号を阻止するチョークコイルを介して第２の増幅部２０内に取り入れるための，第２の電源重畳手段２５が接続されている。
In the embodiment of the present application, the output branching means 24 is a branch circuit comprising a branch coil formed by winding a polyurethane wire around a ferrite core, for example, and outputs the output signal of the second amplifying means 23 to the second output terminal Out2 side. In addition, a part of the amplified television signal is output to the branch terminal 24a.
Further, the output of the output branching means 24 is a TV signal output from the output branching means 24 to the second output terminal Out2 via a capacitor and supplied from the terminal side via the transmission line 4. A second power superimposing means 25 is connected to allow the second power supply voltage to pass through and to be taken into the second amplifying unit 20 via a choke coil that blocks the television signal.

また，前記出力分岐手段２４の分岐端子２４ａには，所定帯域の信号を通過させる例えばコンデンサーとコイル等からなるフィルタ手段２９（例えばバンドパスフィルタ）が接続されている。また，フィルタ手段２９の出力には，前記第２の増幅手段２３による増幅後のテレビ信号が所定レベルとなるように，前記フィルタ手段２９を介して出力されたテレビ信号を検波し，この検波電圧に基づいて前記第２の信号減衰手段２２の減衰量を制御するための第２の制御電圧を生成する，第２の自動利得調整手段２７が接続されており，前記第２の信号減衰手段２２は，この第２の自動利得調整手段２７によって生成された第２の制御電圧によって制御されることで，第２の増幅部２０は自動利得調整付の増幅器として動作するのである。
The branching terminal 24a of the output branching means 24 is connected to a filter means 29 (for example, a bandpass filter) made of, for example, a capacitor and a coil that allows a signal in a predetermined band to pass therethrough. The output of the filter means 29 detects the television signal output through the filter means 29 so that the television signal amplified by the second amplifying means 23 has a predetermined level, and this detected voltage Is connected to a second automatic gain adjusting means 27 for generating a second control voltage for controlling the attenuation amount of the second signal attenuating means 22, and the second signal attenuating means 22. The second amplifier 20 operates as an amplifier with automatic gain adjustment by being controlled by the second control voltage generated by the second automatic gain adjusting means 27.

尚，本願の第２の自動利得調整手段２７は，所定の通過帯域を有するフィルタ手段２９を介して分岐端子２４ａからのテレビ信号を取り込み，第２の増幅部２０における出力レベルの強度を検出するものであり，例えば信号検波用のダイオードによる検波回路とコンデンサー及び抵抗等で構成した平滑回路とからなる平均値検波の検出部と，出力レベルの強度に応じて前記検出部から出力される検波電圧を取り込み，基準値と比較することによって，出力レベルが基準電圧（例えば歪率が所定範囲を越えない出力レベル）を超えているかいないかを判定する，例えばオペレーショナルアンプと抵抗等で構成した演算回路を備えた演算部とから成る。
つまりは，第２の増幅部における出力レベルの強度を検出部で検出して，その検波電圧が基準電圧を超えているかいないかの判断を演算部において行い，検波電圧が基準電圧より高い場合は，検波電圧に応じた信号が演算部より第２の制御信号として出力され，この第２の制御信号によって，上記第２の信号減衰手段２２を制御しすることによって，第２の増幅部２２は自動利得調整を行いながら増幅するのである。
検波電圧が基準電圧より低い場合は，演算部より出力される信号がほぼゼロとなり，上記第２の信号減衰手段２２には第２の制御電圧が印加されず，該第２の信号減衰手段２２は減衰量がほぼゼロの通過状態となり，自動利得調整回路は動作しない通常の増幅部２０として動作するのである。
The second automatic gain adjusting means 27 of the present application takes in the television signal from the branch terminal 24a via the filter means 29 having a predetermined pass band, and detects the intensity of the output level in the second amplifying unit 20. For example, a detection unit of an average value detection composed of a detection circuit using a diode for signal detection and a smoothing circuit composed of a capacitor, a resistor, etc., and a detection voltage output from the detection unit according to the intensity of the output level To determine whether the output level exceeds a reference voltage (for example, an output level whose distortion does not exceed a predetermined range) or not, for example, an arithmetic circuit composed of an operational amplifier and a resistor And an arithmetic unit provided with.
In other words, the intensity of the output level in the second amplifying unit is detected by the detecting unit, and the operation unit determines whether the detected voltage exceeds the reference voltage. If the detected voltage is higher than the reference voltage, A signal corresponding to the detection voltage is output as a second control signal from the arithmetic unit, and the second amplifying unit 22 is controlled by controlling the second signal attenuating means 22 by the second control signal. Amplification is performed with automatic gain adjustment.
When the detection voltage is lower than the reference voltage, the signal output from the calculation unit is almost zero, the second control voltage is not applied to the second signal attenuation means 22, and the second signal attenuation means 22 is not applied. Is in a passing state in which the attenuation is almost zero, and the automatic gain adjustment circuit operates as a normal amplifying unit 20 that does not operate.

更に前記第２の自動利得調整手段２７には，該第２の自動利得調整手段２７において生成された第２の制御電圧に対応し，所定範囲で周波数やパルス幅等を可変するパルス信号を生成する，例えばオペレーショナルアンプと抵抗等で構成した演算回路から成るパルス信号生成手段２８が接続されている。
また，パルス信号生成手段２８には，該パルス信号生成手段２８において生成されたパルス信号と，端末側から供給される前記第２の電源電圧とを混合するパルス信号重畳手段２６が備えられている。
更に入力端子Ｉｎ２と前記第２の信号減衰手段２２との間には，前記第２の電源電圧及びパルス信号を通過し，高周波信号を遮断するチョークコイルを介して，前記第２の電源電圧とパルス信号を，前記第２の入力端子Ｉｎ２側へ出力すると共に，この第２の入力端子Ｉｎ２から入力されたテレビ信号を通過し，前記第２の電源電圧とパルス信号を阻止するコンデンサーを介して，高周波信号を前記第２の信号減衰手段２２へ出力する前記第１の増幅部電源信号重畳手段２１が備えられており，ここから第２の電源電圧とパルス信号は伝送線路３を介して第１の増幅部１０に供給される。
Further, the second automatic gain adjusting means 27 generates a pulse signal corresponding to the second control voltage generated by the second automatic gain adjusting means 27 and varying the frequency, pulse width, etc. within a predetermined range. For example, a pulse signal generating means 28 comprising an arithmetic circuit composed of an operational amplifier and a resistor is connected.
The pulse signal generating means 28 is provided with a pulse signal superimposing means 26 for mixing the pulse signal generated in the pulse signal generating means 28 and the second power supply voltage supplied from the terminal side. .
Further, between the input terminal In2 and the second signal attenuating means 22, the second power supply voltage and the pulse signal are passed through the choke coil that cuts off the high-frequency signal and passes through the second power supply voltage and the pulse signal. A pulse signal is output to the second input terminal In2 side, and a television signal input from the second input terminal In2 is passed through a capacitor that blocks the second power supply voltage and the pulse signal. The first amplifying unit power signal superimposing means 21 for outputting a high frequency signal to the second signal attenuating means 22 is provided, from which the second power supply voltage and the pulse signal are transmitted via the transmission line 3. 1 to the amplifying unit 10.

こうして，第１の増幅部１０は，少なくとも第１の増幅手段が第２の電源電圧によって動作すると共に，第２の増幅部の自動利得調整手段２７において，第２の増幅部２０の出力レベルが所定のレベルを超えるか超えないかの判断が行われ，出力レベルが所定レベルより高い場合，パルス信号は伝送線路を介して第１の増幅部１０に供給され，この増幅部に備えられた第１の制御電圧生成手段１８において，パルス信号の周波数やパルス幅に対応して生成される，所定の範囲内で可変する第１の制御電圧で，第１の信号減衰手段１２を制御する，自動利得調整回路付きの増幅部として，第２の増幅部と共に動作する。
第２の増幅部の出力レベルが所定レベルより低い場合は，自動利得調整手段２７は動作しないので，パルス信号生成手段２８からはパルス信号が出力されず，第１の増幅部１０における第１の信号減衰手段１２は減衰量が略ゼロの通過状態となり，自動利得調整回路が動作しない通常の増幅部１０として，第２の増幅部と共に動作するのである。
尚，本願の実施例によれば，第２の増幅部２０を構成する第２の増幅手段２３は本願の実施例に示す例に限定されるものではなく，第１の増幅部１０のように構成してもよいなど実施例に限定されるものではない。
Thus, in the first amplifying unit 10, at least the first amplifying unit is operated by the second power supply voltage, and the output level of the second amplifying unit 20 is set in the automatic gain adjusting unit 27 of the second amplifying unit. A determination is made as to whether or not the predetermined level is exceeded, and when the output level is higher than the predetermined level, the pulse signal is supplied to the first amplifying unit 10 via the transmission line, and the first amplifying unit provided in the amplifying unit is provided. The first control voltage generator 18 controls the first signal attenuator 12 with a first control voltage that is generated in accordance with the frequency and pulse width of the pulse signal and is variable within a predetermined range. As an amplifying unit with a gain adjustment circuit, it operates together with the second amplifying unit.
When the output level of the second amplifying unit is lower than the predetermined level, the automatic gain adjusting unit 27 does not operate, so that no pulse signal is output from the pulse signal generating unit 28 and the first amplifying unit 10 uses the first level. The signal attenuating means 12 is in a passing state with substantially zero attenuation, and operates as a normal amplifying unit 10 in which the automatic gain adjustment circuit does not operate, together with the second amplifying unit.
According to the embodiment of the present application, the second amplifying means 23 constituting the second amplifying unit 20 is not limited to the example shown in the embodiment of the present application, but like the first amplifying unit 10. However, the present invention is not limited to the embodiment.

また，本願の実施例に限定されるものではなく，例えば図２に示すように，第２の増幅部２０に出力端子Ｏｕｔ２から入力端子Ｉｎ２へ前記第２の電源電圧を通過させるように電流通過回路２１と２５を接続し，第２の増幅部２０は第２の電源電圧で動作すると共に，この第２の電源電圧を伝送線路３を介して第１の増幅部１０に供給することで，第１の増幅部１０を駆動させる。更に，第２の増幅部２０に備えたパルス信号生成手段２８から出力されるパルス信号は，前記伝送線路３とは別に備えさせた制御線３ａによって，前記第１の増幅部に引き込まれて，第１の増幅部１０に備えられた第１の信号減衰手段１２を制御するように構成してもよい。この場合はパルス信号重畳手段２６，パルス信号分離手段１７は必要ない。
尚，この実施例は，これ以降に示す実施例にも応用できる事は言うまでもない。
Further, the present invention is not limited to the embodiment of the present application. For example, as shown in FIG. 2, the second amplifying unit 20 passes the second power supply voltage from the output terminal Out2 to the input terminal In2. The circuits 21 and 25 are connected, and the second amplifying unit 20 operates with the second power supply voltage and supplies the second power supply voltage to the first amplifying unit 10 via the transmission line 3. The first amplifying unit 10 is driven. Further, the pulse signal output from the pulse signal generating means 28 provided in the second amplification unit 20 is drawn into the first amplification unit by the control line 3a provided separately from the transmission line 3, You may comprise so that the 1st signal attenuation means 12 with which the 1st amplification part 10 was equipped may be controlled. In this case, the pulse signal superimposing means 26 and the pulse signal separating means 17 are not necessary.
Needless to say, this embodiment can be applied to the following embodiments.

３０は端末側の装置であって，少なくとも，前記第２の電源電圧を生成する端末側電源生成手段３１と，前記第２の増幅部２０との間に介設される伝送線路４からの高周波信号を通過し，前記第２の電源電圧を遮断するコンデンサーを介して増幅部２０からのテレビ信号を受け入れると共に，前記第２の電源電圧を通過し，前記テレビ信号を阻止するチョークコイルを介して前記第２の増幅部２０に向けて第２の電源電圧を送出するための，端末側重畳手段３２とを備えている。
一般的にこの端末側装置３０は，テレビ受像機や，ＨＤＤレコーダー等のディジタル家電であってもよいし，地上ディジタル放送用のチューナーであってもよい。また，これらの端末側装置３０と前記増幅部２０との間に介設した同軸ケーブルに挿設させて，例えば車のシガライターのソケットから電源を取るように構成した，前記増幅部１０，２０に電源供給するための電源挿入器として構成してもよいなど，特にその構成を限定するものではない。
Reference numeral 30 denotes a terminal-side device, and at least high-frequency from the transmission line 4 interposed between the terminal-side power generation means 31 that generates the second power supply voltage and the second amplifying unit 20. Through a capacitor that passes the signal and receives the television signal from the amplifying unit 20 through a capacitor that cuts off the second power supply voltage, and through a choke coil that passes through the second power supply voltage and blocks the television signal. Terminal-side superimposing means 32 is provided for sending the second power supply voltage toward the second amplifying unit 20.
Generally, the terminal device 30 may be a digital home appliance such as a television receiver or an HDD recorder, or a tuner for terrestrial digital broadcasting. Further, the amplifiers 10 and 20 are configured to be inserted into a coaxial cable interposed between the terminal-side device 30 and the amplifier 20 and to take power from, for example, a socket of a car cigarette lighter. The configuration is not particularly limited, for example, it may be configured as a power insertion device for supplying power to the power supply.

図３に本願の第１実施形態の異なる実施例を示す。尚，上記実施例と同じ構成を示すものは同じ符号を付与し詳細な説明は省略する。この実施例ではテレビ受信用のアンテナ１を複数個備え，このアンテナ１，１・・・に対して同数の第１の増幅部１０，１０・・・を備えさせて，第１の増幅部１０，１０・・・の出力信号を混合器８において混合して，一本の同軸伝送線路３を用いて第２の増幅部に送出するように構成されたものであり，混合器８は出力端子から各入力端子へ直流電圧とパルス信号が通過するように構成されている。
FIG. 3 shows a different example of the first embodiment of the present application. In addition, what shows the same structure as the said Example attaches | subjects the same code | symbol, and abbreviate | omits detailed description. In this embodiment, a plurality of antennas 1 for receiving television are provided, and the same number of first amplifying units 10, 10... Are provided for the antennas 1, 1,. , 10... Are mixed in the mixer 8 and sent to the second amplifying unit using a single coaxial transmission line 3, and the mixer 8 has an output terminal. The DC voltage and the pulse signal are configured to pass through to each input terminal.

次に本発明の第２の実施形態として図４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装置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 FIG. In the following description, the same components as those in the television receiving amplifying apparatus of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

この実施例では，アンテナ１が複数個備えられており，夫々のアンテナの受信信号はアンテナと同数用意された第１の増幅部１０を介してアンテナ切換部９に入力されている。
このアンテナ切換部９は，各第１の増幅部１０，１０・・・から出力された受信信号の一部を検波して検波信号を出力する受信部４１，４１・・・と，前記受信信号の信号強度に応じてアンテナ切換手段４６へ切換制御信号を送る切換判定手段４５と，該切換判定手段４５に基づいて前記受信信号を切り換えて出力信号として出力する前記アンテナ切換手段４６とから成り，前記切換判定手段４５において，前記アンテナ切換手段４６の切換の判断基準となる受信信号の信号強度に対する閾値との比較が行われ，これに基づいてアンテナ切換手段４６を切り換える，所謂ダイバーシティー方式に構成されている。
これによって，最適な受信アンテナからの受信信号を得られるばかりでなく，受信しないアンテナに接続された他の第１の増幅部を受信システムから切り離すことができ，この増幅部が雑音源となることを防止できるのである。
本願の実施例では，前記アンテナ切換手段４６として，例えばリレーなどから構成される高周波切換スイッチを用いた例を示したが，このリレーの変わりにアンテナからの信号線に減衰器を備えさせ，選択した受信アンテナの信号線に介在させた減衰器は減衰量がゼロに，選択されない受信アンテナの信号線に介在させた減衰器は減衰量が最大となるように，前記切換判定手段４５によって，減衰器の減衰量を切換可能なように構成すれば，選択されない側の増幅部からの出力信号を押えることができるので，前記高周波切替スイッチと同様の効果が得られるのである。
尚，これらの例に示すアンテナ切換部９には，第２の増幅部２０側から供給される第２の電源電圧とパルス信号を，出力端子側から入力端子側へ通過するように電源信号通過回路が備えられている。
In this embodiment, a plurality of antennas 1 are provided, and the reception signals of the respective antennas are input to the antenna switching unit 9 via the first amplifying units 10 prepared in the same number as the antennas.
The antenna switching unit 9 includes a receiving unit 41, 41... That detects a part of the reception signal output from each of the first amplification units 10, 10,. A switching determination means 45 for sending a switching control signal to the antenna switching means 46 according to the signal strength of the signal, and the antenna switching means 46 for switching the received signal based on the switching determination means 45 and outputting it as an output signal. In the switching determination means 45, a comparison is made with a threshold value with respect to the signal strength of the received signal, which is a criterion for switching the antenna switching means 46, and the antenna switching means 46 is switched based on this comparison. Has been.
Thus, not only the reception signal from the optimum receiving antenna can be obtained, but also the other first amplifying unit connected to the antenna not receiving can be separated from the receiving system, and this amplifying unit becomes a noise source. Can be prevented.
In the embodiment of the present application, as the antenna switching means 46, for example, a high-frequency switch composed of a relay or the like is used. However, instead of this relay, an attenuator is provided on the signal line from the antenna, and the antenna switching means 46 is selected. The switching determination means 45 attenuates the attenuation of the attenuator interposed in the signal line of the receiving antenna to be zero while the attenuation of the attenuator interposed in the signal line of the unselected receiving antenna is maximized. If the attenuation of the device is configured to be switchable, the output signal from the amplification unit on the non-selected side can be suppressed, so that the same effect as the high-frequency switch can be obtained.
In the antenna switching unit 9 shown in these examples, the second power source voltage and the pulse signal supplied from the second amplifying unit 20 side are passed through the power source signal so as to pass from the output terminal side to the input terminal side. A circuit is provided.

次に，本願のテレビ受信用増幅装置を用いた具体的な配線システム例について図５を用いて説明する。この実施例では少なくともアンテナ１と第１の増幅部１０を，例えばタクシーなどの車のルーフ１００に設置されている表示灯１０１の内部に配設した構成例を示したものである。
この図においてアンテナ１は無指向性のＵＨＦディジタル放送用のアンテナである。尚，実施例に示すアンテナは設置の状態を示すために書かれたものであり，特にこの形状に限定されるものでなく，例えば透明性の良い薄板の絶縁体の表面に導電材料を用いてアンテナ素子を形成したものでも良いなど，特に実施例に限定されるものではない。
本願の実施例における第１の増幅部１０は，増幅素子としてのトランジスタ等から成る雑音指数２．５ｄＢ，利得２０ｄＢの低雑音増幅回路からなる。この第１の増幅部１０は，前記表示灯１０１の内部であって，前記アンテナ１の近傍に例えばアンテナ１の出力と同軸ケーブルによって接続されているのであるが，この第１の増幅部１０は前記アンテナ１の給電部に内蔵させても良いし，前記アンテナ１の出力端子と第１の増幅部１０の入力端子とが直接接続できるように端子構造をメイル，フィーメイルの構成としても良く，出来うる限り短い距離で接続することによって受信信号のＣ／Ｎの劣化が少なくなるように構成するのが良い。
またこの実施例では，アンテナ１と第１の増幅部１０は表示灯に内蔵させることから，アンテナ１と第１の増幅部１０は，特に防水構造を有するような複雑な構造体のケースに収納する必要がなく，安価に構成できる。
Next, a specific wiring system example using the television receiving amplifier of the present application will be described with reference to FIG. In this embodiment, an example in which at least the antenna 1 and the first amplifying unit 10 are disposed inside a display lamp 101 installed on a roof 100 of a car such as a taxi is shown.
In this figure, an antenna 1 is an omnidirectional UHF digital broadcast antenna. The antenna shown in the embodiment is written to indicate the state of installation, and is not particularly limited to this shape. For example, a conductive material is used on the surface of a thin transparent insulator. The antenna element may be formed, and the present invention is not particularly limited to the embodiment.
The first amplifying unit 10 in the embodiment of the present application is composed of a low noise amplifying circuit having a noise figure of 2.5 dB and a gain of 20 dB composed of a transistor as an amplifying element. The first amplifying unit 10 is connected to the output of the antenna 1 by, for example, a coaxial cable inside the indicator lamp 101 and in the vicinity of the antenna 1. The antenna 1 may be built in the power feeding unit, or the terminal structure may be a mail or a mail configuration so that the output terminal of the antenna 1 and the input terminal of the first amplifying unit 10 can be directly connected. It is preferable that the connection is made as short as possible so that the deterioration of the C / N of the received signal is reduced.
In this embodiment, since the antenna 1 and the first amplifying unit 10 are built in the indicator lamp, the antenna 1 and the first amplifying unit 10 are housed in a case of a complicated structure having a waterproof structure. There is no need to do this, and it can be configured at low cost.

第１の増幅部１０において所定レベルまで増幅された受信信号は，同軸ケーブル３を介して第２の増幅部２０と接続されている。この同軸ケーブル３は，例えば２Ｃ若しくはそれより細径の可曲性の良い同軸ケーブルであり，車体のラインに合わせて配設を容易にすると共に，車体内部への引き込み作業を容易としている。尚，第１の増幅部１０と第２の増幅部２０との間に介設される同軸ケーブルは，所定の長さに形成したものを予め接続した状態にしてもよいし，別体に用意してコネクタで接続できるように構成してもよい。
The received signal amplified to a predetermined level in the first amplifying unit 10 is connected to the second amplifying unit 20 via the coaxial cable 3. The coaxial cable 3 is, for example, a coaxial cable having a bendability of 2C or smaller and easy to arrange according to the line of the vehicle body, and facilitates the drawing operation into the vehicle body. Note that the coaxial cable interposed between the first amplifying unit 10 and the second amplifying unit 20 may be in a state in which a cable formed to a predetermined length is connected in advance or prepared separately. Then, it may be configured to be connected with a connector.

次に第２の増幅部２０について説明する。この第２の増幅部２０は同軸ケーブル３を介して車のトランクルームやシートの下の間隙等に設置される。
この第２の増幅部２０は，増幅素子としてのトランジスタやＩＣ等から構成される略３０ｄＢ程度の増幅度を有する高出力型の高周波回路であり，同じく車内に設置された，例えば地上ディジタル放送受信用のチューナー等の端末側装置と接続されるのである。
Next, the second amplifying unit 20 will be described. The second amplifying unit 20 is installed via the coaxial cable 3 in a car trunk room, a gap under a seat, or the like.
The second amplifying unit 20 is a high-output type high-frequency circuit having an amplification degree of about 30 dB composed of a transistor, an IC, or the like as an amplifying element. It is connected to a terminal-side device such as a tuner for use.

このように本願のテレビ受信用増幅装置は，アンテナ１の給電部に内蔵するか，若しくは，アンテナ１の近傍に設置される，少なくとも第１の信号減衰手段１２と第１の増幅手段１３から成る第１の増幅部１０と，地上ディジタル放送受信用チューナー等の端末側装置３０の近傍に設置される，少なくとも第２の信号減衰手段２２と第２の増幅手段２３から成る第２の増幅部２０とから成り，
前記第２の増幅部２０及び前記第１の増幅部は，前記端末側から伝送線路３，４を介して供給される第２の電源電圧によって動作するように構成され，
前記第１の増幅部１０に備えた第１の信号減衰手段１２は，前記第２の増幅部２０に備えられた前記自動利得調整手段２７から出力される第２の制御電圧に対応し，この制御信号を基に，第２の増幅部２０に備えた前記パルス信号生成手段２８で生成されるパルス信号を，伝送線路を介して第１の増幅部１０に供給し，このパルス信号から第１の増幅部に備えた前記第１の制御信号生成手段１８において生成される第１の制御電圧によって制御されるように構成し，第１の増幅部１０と第２の増幅部２０を同時に自動利得調整回路付きとして動作させるようにしたので，受信信号が小さくてもＣ／Ｎの劣化がなく，受信信号が大きくても歪の発生による妨害のない，入力レベルの変化に対するダイナミックレンジが広い受信できるのである。
As described above, the television reception amplifying apparatus of the present application includes at least the first signal attenuating means 12 and the first amplifying means 13 which are built in the power feeding portion of the antenna 1 or installed in the vicinity of the antenna 1. A second amplifying unit 20 including at least a second signal attenuating unit 22 and a second amplifying unit 23 installed in the vicinity of the first amplifying unit 10 and a terminal-side device 30 such as a terrestrial digital broadcast receiving tuner. And
The second amplifying unit 20 and the first amplifying unit are configured to operate with a second power supply voltage supplied from the terminal side via transmission lines 3 and 4;
The first signal attenuating unit 12 provided in the first amplifying unit 10 corresponds to the second control voltage output from the automatic gain adjusting unit 27 provided in the second amplifying unit 20, and this Based on the control signal, the pulse signal generated by the pulse signal generating means 28 provided in the second amplifying unit 20 is supplied to the first amplifying unit 10 via the transmission line. The first amplifying unit 10 and the second amplifying unit 20 are simultaneously controlled by the first control voltage generated by the first control signal generating means 18 provided in the amplifying unit. Since it is operated with an adjustment circuit, even if the received signal is small, there is no C / N degradation, and even if the received signal is large, there is no interference due to distortion, and a wide dynamic range with respect to changes in input level can be received. It is.

また，例えば，地上ディジタル放送を受信するための増幅装置のように，現時点において地上ディジタル放送波の送信電力などがフルパワーでない地域や，安定的に出されていない地域において使用する場合に，最適な受信状態に成るように設置されたままの状態であっても，２０１１年以降にテレビ放送が完全ディジタル化が行われ，現状の受信状態より多チャンネルの電波が入力されたり，送信電力の増力化がなされたりし，増幅装置に更に大きいレベルの信号が入力されても，自動的に最適な出力レベルが得られるのである。
また，車のような移動体での使用を考えたときに，上述のような受信レベルの変動ばかりでなく，短時間の移動の間に，電界強度が大きく変化する場合があるが，この入力の変化に対応するために，移動時（即ち運転時）に，スイッチ操作等によって減衰器等の設定を切り換えるような方式の増幅装置と比べて，スイッチ操作等をすることもないので，安全性に優れているのである。
更に加えて，スイッチ操作等をやり安いようにするために，第２の増幅部の設置場所が極めて限定されるといった問題もなく，極めて利便性のよいテレビ受信用増幅装置が提供できるのである。

尚，本発明は上記実施の形態に限定されるものではなく，以下に例示するように，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。
It is also ideal for use in areas where the transmission power of terrestrial digital broadcast waves, etc. is not at full power at present, or where it is not stably output, such as an amplifier for receiving terrestrial digital broadcasts. Even in a state where it is installed so as to be in a proper reception state, television broadcasting will be completely digitized after 2011, multi-channel radio waves will be input from the current reception state, and transmission power will be increased. Even if a higher level signal is input to the amplifier, the optimum output level can be obtained automatically.
In addition, when considering use in a moving body such as a car, the electric field strength may change greatly during a short period of movement as well as the fluctuation in the reception level as described above. In order to cope with the change in the power, the switch is not operated compared to an amplifying device that switches the setting of the attenuator, etc. by moving the switch (ie during operation). It is excellent.
In addition, in order to make the switch operation and the like cheap, there is no problem that the installation location of the second amplification unit is extremely limited, and an extremely convenient television receiving amplification device can be provided.

The present invention is not limited to the above-described embodiment, and can be implemented by appropriately changing the configuration of each part without departing from the spirit of the present invention, as exemplified below.

本発明に係るテレビ受信増幅装置の第１の実施形態を示す概略ブロック図である。1 is a schematic block diagram illustrating a first embodiment of a television reception amplification device according to the present invention. 第１の実施形態の異なる実施例を示す概略ブロック図である。It is a schematic block diagram which shows the Example from which 1st Embodiment differs. アンテナを複数本備えた実施例を示す概略ブロック図である。It is a schematic block diagram which shows the Example provided with two or more antennas. 本願に係る第２の実施形態を示す概略ブロック図である。It is a schematic block diagram which shows 2nd Embodiment which concerns on this application. 本願のテレビ受信用増幅装置を車体に取付けられた表示灯に内蔵させたときの概略図である。It is the schematic when the television receiving amplifier of this application is built in the indicator lamp attached to the vehicle body.

符号の説明Explanation of symbols

１…アンテナ，２・３・４…伝送線路，８…混合器，９…アンテナ切換部，１０…第１の増幅部，１２…第１の信号減衰手段，１３…第１の増幅手段，１５…第１の電源重畳手段，１７…パルス信号分離手段，１８…第１の制御電圧生成手段，２０…第２の増幅部，２１…第１の増幅部制御電圧重畳手段，２２…第２の信号減衰手段，２３…第２の増幅手段，２４…出力分岐手段，２４ａ…分岐岐端子，２５…第２の電源重畳手段，２６…パルス信号重畳手段，２７…第２の自動利得調整手段，２８…パルス信号生成手段，２９…フィルタ手段，３０…端末側装置，３１…第２の電源生成手段，３２…第２の電源重畳手段，４１…受信部，４５…切換判定手段，４６…アンテナ切換手段，１００…車体，１０１…ルーフ
DESCRIPTION OF SYMBOLS 1 ... Antenna, 2 * 3 * 4 Transmission line, 8 ... Mixer, 9 ... Antenna switching part, 10 ... 1st amplification part, 12 ... 1st signal attenuation means, 13 ... 1st amplification means, 15 ... 1st power supply superimposing means, 17 ... pulse signal separation means, 18 ... 1st control voltage generation means, 20 ... 2nd amplification part, 21 ... 1st amplification part control voltage superimposition means, 22 ... 2nd Signal attenuating means 23 ... second amplifying means 24 ... output branching means 24a ... branch branch terminal 25 ... second power supply superimposing means 26 ... pulse signal superimposing means 27 ... second automatic gain adjusting means, 28 ... Pulse signal generating means, 29 ... Filter means, 30 ... Terminal side device, 31 ... Second power generating means, 32 ... Second power superimposing means, 41 ... Receiver, 45 ... Switching determining means, 46 ... Antenna Switching means, 100 ... body, 101 ... roof

Claims (10)

テレビ放送波受信用のアンテナにて受信したテレビ信号を増幅して端末側に一本の伝送線路によって伝送するためのテレビ受信用増幅装置において，
該テレビ受信用増幅装置は，前記アンテナの給電部に内蔵させるか若しくは該給電部の近傍に介設しアンテナからの出力信号を所定レベルまで増幅する第１の増幅部と，端末側に設置され，前記第１の増幅部から前記伝送線路を介して送られた出力信号を所定レベルまで増幅する第２の増幅部とから成り，
前記第１の増幅部は，少なくとも，第１の入力端子から入力されたテレビ信号を減衰させる第１の信号減衰手段と，前記第１の信号減衰手段にて減衰されたテレビ信号を増幅する第１の増幅手段と，伝送線路を介して供給される第２の電源電圧及びパルス信号を，第１の出力端子から取り入れると共に，第１の増幅手段において所定レベルまで増幅されたテレビ信号を，第１の出力端子へ出力するための第１の電源重畳手段と，該第１の電源重畳手段によって取り入れられる前記第２の電源電圧とパルス信号とを分離するためのパルス信号分離手段と，該パルス信号分離手段から出力されるパルス信号に対応して，前記第１の信号減衰手段を制御するための第１の制御電圧を生成する第１の制御電圧生成手段とから成り，
前記第２の増幅部は，少なくとも，第２の入力端子から入力されたテレビ信号を減衰させる第２の信号減衰手段と，前記第２の信号減衰手段にて減衰されたテレビ信号を増幅する第２の増幅手段と，前記第２の増幅手段にて増幅されたテレビ信号を第２の出力端子側へ出力すると共に，該増幅されたテレビ信号の一部を分岐させる出力分岐手段と，端末側から伝送線路を介して供給される第２の電源電圧を第２の出力端子から取り入れると共に，前記出力分岐手段から出力されるテレビ信号を第２の出力端子へ出力するための第２の電源重畳手段と，前記第２の増幅手段による増幅後のテレビ信号が所定レベルとなるように，前記出力分岐手段により分岐されたテレビ信号に基づいて前記第２の信号減衰手段の減衰量を制御するための第２の制御電圧を生成する第２の自動利得調整手段と，該第２の自動利得調整手段において生成された第２の制御電圧に対応したパルス信号を生成するパルス信号生成手段と，このパルス信号生成手段において生成されたパルス信号と前記第２の電源電圧を混合するパルス信号重畳手段と，該パルス信号重畳手段から出力されるパルス信号と前記第２の電源電圧を，前記第２の入力端子側へ出力すると共に，この第２の入力端子から入力されたテレビ信号を前記第２の信号減衰手段へ出力する第１の増幅部電源信号重畳手段と，から成り，
前記第２の増幅部及び前記第１の増幅部は前記端末側から伝送線路を介して供給される第２の電源電圧によって動作するように構成され，
前記第１の増幅部に備えた第１の信号減衰手段は，前記第２の増幅部に備えられた前記自動利得調整手段から出力される制御電圧に対応し，前記パルス信号生成手段で生成されるパルス信号によって，伝送線路を介して制御されるように構成したことを特徴としたテレビ受信用増幅装置。
In a television reception amplifying device for amplifying a television signal received by a television broadcast wave receiving antenna and transmitting it to a terminal side by a single transmission line,
The television receiving amplifying device is installed on the terminal side, and a first amplifying unit that is built in the power feeding unit of the antenna or is provided in the vicinity of the power feeding unit and amplifies an output signal from the antenna to a predetermined level. , And a second amplifying unit for amplifying the output signal sent from the first amplifying unit via the transmission line to a predetermined level,
The first amplifying unit amplifies the television signal attenuated by at least first signal attenuating means for attenuating the television signal input from the first input terminal and the first signal attenuating means. The first amplifying means and the second power supply voltage and the pulse signal supplied via the transmission line are taken in from the first output terminal, and the television signal amplified to a predetermined level by the first amplifying means is First power supply superimposing means for outputting to one output terminal, pulse signal separating means for separating the second power supply voltage and the pulse signal taken in by the first power superimposing means, and the pulse A first control voltage generating means for generating a first control voltage for controlling the first signal attenuating means in response to a pulse signal output from the signal separating means;
The second amplifying unit amplifies the television signal attenuated by at least the second signal attenuating means for attenuating the television signal input from the second input terminal and the second signal attenuating means. 2 amplifying means, an output branching means for outputting the television signal amplified by the second amplifying means to the second output terminal side, and branching a part of the amplified television signal, and the terminal side The second power supply superimposition for taking in the second power supply voltage supplied from the output via the transmission line from the second output terminal and outputting the television signal output from the output branching means to the second output terminal And an amount of attenuation of the second signal attenuating means based on the television signal branched by the output branching means so that the television signal amplified by the second amplifying means becomes a predetermined level. The second of Second automatic gain adjusting means for generating control voltage, pulse signal generating means for generating a pulse signal corresponding to the second control voltage generated in the second automatic gain adjusting means, and the pulse signal generating means Pulse signal superimposing means for mixing the pulse signal generated in step 2 and the second power supply voltage, and the pulse signal output from the pulse signal superimposing means and the second power supply voltage to the second input terminal side. And a first amplifying part power signal superimposing means for outputting a television signal inputted from the second input terminal to the second signal attenuating means,
The second amplifying unit and the first amplifying unit are configured to operate by a second power supply voltage supplied from the terminal side via a transmission line,
The first signal attenuating means provided in the first amplifying unit corresponds to the control voltage output from the automatic gain adjusting means provided in the second amplifying unit, and is generated by the pulse signal generating means. A television receiving amplifying device characterized by being controlled via a transmission line by a pulse signal.
複数のアンテナからの信号を増幅するために該アンテナと同数の前記第１の増幅部が備えられ，夫々の第１の増幅部において所定レベルまで増幅された出力信号を混合して一本の伝送線路で出力する混合器を介し，前記第２の増幅部と接続するように構成され，
前記第２の増幅部は前記端末側から伝送線路を介して供給される第２の電源電圧によって動作するように構成され，
前記第１の増幅部に備えた第１の信号減衰手段は，前記第２の増幅部に備えられた前記自動利得調整手段に対応して生成されるパルス信号から得られる第１の制御信号によって，伝送線路を介して制御され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。
In order to amplify signals from a plurality of antennas, the same number of the first amplifying units as the antennas are provided, and the output signals amplified to a predetermined level in each first amplifying unit are mixed to transmit one signal It is configured to be connected to the second amplifying unit via a mixer that outputs on a line,
The second amplification unit is configured to operate with a second power supply voltage supplied from the terminal side via a transmission line,
The first signal attenuating means provided in the first amplifying unit is based on a first control signal obtained from a pulse signal generated corresponding to the automatic gain adjusting means provided in the second amplifying unit. 2. The television receiving amplifying device according to claim 1, wherein the amplifying device is controlled via a transmission line.
複数のテレビ放送波受信用のアンテナにて受信したテレビ信号を夫々増幅し，その受信信号を選択的に切り換えて端末側に一本の伝送線路によって伝送するダイバーシティー方式のテレビ受信受信用機器において，
該テレビ受信用増幅装置は，複数のアンテナからの信号を増幅するために該アンテナと同数の前記第１の増幅部と，夫々の第１の増幅部において所定レベルまで増幅された受信信号を復調して検波信号を出力する受信部と，前記受信信号の信号強度に応じて前記アンテナ切換手段へ切換制御信号を送る切換判定手段と，該切換判定手段に基づいて前記受信信号を切り換えて出力信号として出力する前記アンテナ切換手段とから成るアンテナ切換部と，該アンテナ切換部から出力された出力信号を所定レベルまで増幅する前記第２の増幅部２０と，から成り，
前記第１の増幅部段は，少なくとも，第１の入力端子から入力されたテレビ信号を減衰させる第１の信号減衰手段と，前記第１の信号減衰手段にて減衰されたテレビ信号を増幅する第１の増幅手段と，伝送線路を介して供給される第２の電源電圧及びパルス信号を第１の出力端子から取り入れると共に，第１の増幅手段において所定レベルまで増幅されたテレビ信号を，第１の出力端子へ出力するための第１の電源重畳手段と，該第１の電源重畳手段によって取り入れられる前記第２の電源電圧とパルス信号とを分離するためのパルス信号分離手段と，該パルス信号分離手段から出力されるパルス信号に対応して，前記第１の信号減衰手段を制御するための第１の制御電圧を生成する，第１の制御電圧生成手段とから成り，
前記第２の増幅部は，少なくとも，第２の入力端子から入力されたテレビ信号を減衰させる第２の信号減衰手段と，前記第２の信号減衰手段にて減衰されたテレビ信号を増幅する第２の増幅手段と，前記第２の増幅手段にて増幅されたテレビ信号を第２の出力端子側へ出力すると共に，該増幅されたテレビ信号の一部を分岐させる出力分岐手段と，端末側から伝送線路を介して供給される第２の電源電圧を第２の出力端子から取り入れると共に，前記出力分岐手段から出力されるテレビ信号を第２の出力端子へ出力するための第２の電源重畳手段と，前記第２の増幅手段による増幅後のテレビ信号が所定レベルとなるように，前記出力分岐手段により分岐されたテレビ信号に基づいて前記第２の信号減衰手段の減衰量を制御するための第２の制御電圧を生成する第２の自動利得調整手段と，該第２の自動利得調整手段において生成された第２の制御電圧に対応したパルス信号を生成するパルス信号生成手段と，このパルス信号生成手段において生成されたパルス信号と前記第２の電源電圧を混合するパルス信号重畳手段と，該パルス信号重畳手段から出力されるパルス信号と前記第２の電源電圧を，前記第２の入力端子側へ出力すると共に，この第２の入力端子から入力されたテレビ信号を前記第２の信号減衰手段へ出力する第１の増幅部電源信号重畳手段と，から成り，
前記第２の増幅部及び前記第１の増幅部は前記端末側から伝送線路を介して供給される第２の電源電圧によって動作するように構成され，
前記第１の増幅部に備えた第１の信号減衰手段は，前記第２の増幅部に備えられた前記自動利得調整手段に対応して生成されるパルス信号から得られる第１の制御信号によって，伝送線路を介して制御されるように構成したことを特徴としたダイバーシティー方式のテレビ受信用増幅装置。
In a diversity-type television receiver / receiver device that amplifies television signals received by a plurality of antennas for receiving television broadcast waves, selectively switches the received signals, and transmits them to the terminal side by a single transmission line. ,
The television reception amplifying apparatus demodulates reception signals amplified to a predetermined level by the same number of first amplification units as the antennas and the first amplification units in order to amplify signals from a plurality of antennas. A receiving unit that outputs a detection signal, a switching determination unit that sends a switching control signal to the antenna switching unit according to the signal strength of the received signal, and an output signal that switches the received signal based on the switching determination unit An antenna switching unit including the antenna switching unit that outputs the output signal, and the second amplification unit 20 that amplifies the output signal output from the antenna switching unit to a predetermined level.
The first amplifying unit stage amplifies at least the first signal attenuating means for attenuating the television signal input from the first input terminal and the television signal attenuated by the first signal attenuating means. The first amplification means, the second power supply voltage and the pulse signal supplied via the transmission line are taken in from the first output terminal, and the television signal amplified to the predetermined level by the first amplification means is First power supply superimposing means for outputting to one output terminal, pulse signal separating means for separating the second power supply voltage and the pulse signal taken in by the first power superimposing means, and the pulse A first control voltage generating means for generating a first control voltage for controlling the first signal attenuating means in response to a pulse signal output from the signal separating means;
The second amplifying unit amplifies the television signal attenuated by at least the second signal attenuating means for attenuating the television signal input from the second input terminal and the second signal attenuating means. 2 amplifying means, an output branching means for outputting the television signal amplified by the second amplifying means to the second output terminal side, and branching a part of the amplified television signal, and the terminal side The second power supply superimposition for taking in the second power supply voltage supplied from the output via the transmission line from the second output terminal and outputting the television signal output from the output branching means to the second output terminal And an amount of attenuation of the second signal attenuating means based on the television signal branched by the output branching means so that the television signal amplified by the second amplifying means becomes a predetermined level. The second of Second automatic gain adjusting means for generating control voltage, pulse signal generating means for generating a pulse signal corresponding to the second control voltage generated in the second automatic gain adjusting means, and the pulse signal generating means Pulse signal superimposing means for mixing the pulse signal generated in step 2 and the second power supply voltage, and the pulse signal output from the pulse signal superimposing means and the second power supply voltage to the second input terminal side. And a first amplifying part power signal superimposing means for outputting a television signal inputted from the second input terminal to the second signal attenuating means,
The second amplifying unit and the first amplifying unit are configured to operate by a second power supply voltage supplied from the terminal side via a transmission line,
The first signal attenuating means provided in the first amplifying unit is based on a first control signal obtained from a pulse signal generated corresponding to the automatic gain adjusting means provided in the second amplifying unit. , Diversity television receiver amplifier characterized by being configured to be controlled via a transmission line.
請求項１乃至請求項３に記載のテレビ受信用増幅装置と，
少なくとも，前記第２の電源電圧を生成する端末側電源生成手段と，前記第２の増幅部との間に介設される伝送線路からの出力信号を受け入れると共に，前記第２の増幅部に伝送線路を介して第２の電源電圧を送出する端末側重畳手段とを備えて成る端末側装置と，
から成ることを特徴としたテレビ受信用増幅装置。
A television receiving amplifying device according to claim 1;
At least an output signal from a transmission line interposed between the terminal-side power generation means for generating the second power supply voltage and the second amplification unit is received and transmitted to the second amplification unit A terminal-side device comprising terminal-side superimposing means for sending a second power supply voltage via a line;
A television receiver amplifying device comprising:
請求項１乃至請求項４のテレビ受信用増幅装置と，テレビ受信用のアンテナと，少なくとも前記第１の増幅部と第２の増幅部との間に介設する所定長さの伝送線路と，を予め備えたことを特徴としたテレビ受信用増幅装置。
A television reception amplifying device according to claims 1 to 4, a television reception antenna, a transmission line having a predetermined length interposed between at least the first amplification unit and the second amplification unit, A television receiving amplifying device characterized by comprising:
少なくとも，前記第１の増幅部と前記第２の増幅部との間，及び，前記第２の増幅部と端末側との間に介設する伝送線路は外形寸法が５ｍｍと同じ若しくはこれより細径の同軸ケーブルを使用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５に記載のテレビ受信用増幅装置。
At least the transmission line interposed between the first amplifying unit and the second amplifying unit and between the second amplifying unit and the terminal side has an outer dimension equal to or smaller than 5 mm. 6. The television receiving amplifying device according to claim 1, wherein a coaxial cable having a diameter is used.
少なくともテレビ受信用のアンテナと前記第１の増幅部とを車体の外部に装着された表示灯若しくは広告塔に内蔵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６に記載のテレビ受信用増幅装置。
7. The television according to claim 1, wherein at least a television receiving antenna and the first amplifying unit are built in an indicator lamp or an advertising tower mounted outside a vehicle body. Amplifying device for reception.
前記アンテナはフィルムアンテナから成る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装置。
8. The television receiving amplifying device according to claim 1, wherein the antenna is a film antenna.
前記テレビ受信用増幅装置は地上ディジタル放送受信用であることを特徴とした請求項１乃至請求項８の何れかに記載のテレビ受信用増幅装置。
9. The television reception amplification device according to claim 1, wherein the television reception amplification device is for terrestrial digital broadcast reception.
少なくとも，テレビ放送波受信用のアンテナと，該アンテナにて受信したテレビ信号を増幅して端末側に一本の伝送線路によって伝送する増幅部とから成るテレビ受信用増幅装置を備えたテレビ受信システムにおいて，
前記テレビ受信用増幅装置は，請求項１乃至請求項９の何れかに記載のテレビ受信用増幅装置であって，
少なくとも，前記第１の増幅部よりアンテナ側は建造物若しくは車両の外部に設置されるように構成したことを特徴としたテレビ受信システム。
Television receiving system including a television receiving amplifying device comprising at least an antenna for receiving a television broadcast wave and an amplifying unit for amplifying a television signal received by the antenna and transmitting the signal to a terminal side by a single transmission line In
The television receiving amplifying device is the television receiving amplifying device according to any one of claims 1 to 9,
A television receiving system, wherein at least an antenna side of the first amplifying unit is installed outside a building or a vehicle.
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Publication number Priority date Publication date Assignee Title
WO2008023474A1 (en) 2006-08-25 2008-02-28 Kabushiki Kaisha Toshiba Vacuum cleaner
JP2009105648A (en) * 2007-10-23 2009-05-14 Sharp Corp Allotter, tv broadcast receiver using it, ground wave tv broadcast receiver, satellite tv broadcast receiver, and ground wave tv and satellite tv broadcast receiver
JP2010028630A (en) * 2008-07-23 2010-02-04 Japan Radio Co Ltd Satellite communication earth station system and satellite communication system
JP2010239831A (en) * 2009-03-31 2010-10-21 Maspro Denkoh Corp Power unit for transmission apparatus

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JPH0346807A (en) * 1989-07-14 1991-02-28 Maspro Denkoh Corp Television receiver amplifier
JP2000196981A (en) * 1998-12-25 2000-07-14 Matsushita Electric Ind Co Ltd Video receiver
JP2004214939A (en) * 2002-12-27 2004-07-29 Maspro Denkoh Corp Amplifier for tv reception

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008023474A1 (en) 2006-08-25 2008-02-28 Kabushiki Kaisha Toshiba Vacuum cleaner
JP2009105648A (en) * 2007-10-23 2009-05-14 Sharp Corp Allotter, tv broadcast receiver using it, ground wave tv broadcast receiver, satellite tv broadcast receiver, and ground wave tv and satellite tv broadcast receiver
JP2010028630A (en) * 2008-07-23 2010-02-04 Japan Radio Co Ltd Satellite communication earth station system and satellite communication system
JP2010239831A (en) * 2009-03-31 2010-10-21 Maspro Denkoh Corp Power unit for transmission apparatus

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