JP4777686B2 - Receiving system - Google Patents

Receiving system Download PDF

Info

Publication number
JP4777686B2
JP4777686B2 JP2005141758A JP2005141758A JP4777686B2 JP 4777686 B2 JP4777686 B2 JP 4777686B2 JP 2005141758 A JP2005141758 A JP 2005141758A JP 2005141758 A JP2005141758 A JP 2005141758A JP 4777686 B2 JP4777686 B2 JP 4777686B2
Authority
JP
Japan
Prior art keywords
signal
digital broadcast
terrestrial digital
television
mixing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2005141758A
Other languages
Japanese (ja)
Other versions
JP2006319798A (en
Inventor
昭雄 北川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maspro Denkoh Corp
Original Assignee
Maspro Denkoh Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maspro Denkoh Corp filed Critical Maspro Denkoh Corp
Priority to JP2005141758A priority Critical patent/JP4777686B2/en
Publication of JP2006319798A publication Critical patent/JP2006319798A/en
Application granted granted Critical
Publication of JP4777686B2 publication Critical patent/JP4777686B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Details Of Television Systems (AREA)

Description

本発明は，主にテレビ受信システムに関し，詳しくは地上アナログ放送と地上ディジタル放送とが混在する地域であって，地上ディジタル放送波によって地上アナログ放送の受信に妨害を受ける地域の，既設の地上アナログ放送受信システムに，簡単に地上ディジタル放送受信システムを付加することができる受信システムに関する。
The present invention mainly relates to a television receiving system, and more specifically, in an area where terrestrial analog broadcasting and terrestrial digital broadcasting are mixed, and in an area where reception of terrestrial analog broadcasting is disturbed by terrestrial digital broadcasting waves. The present invention relates to a receiving system that can easily add a terrestrial digital broadcasting receiving system to a broadcasting receiving system.

近年，テレビ放送は多チャンネル化やディジタル化が進み，衛星放送ばかりでなく地上波もディジタル化され，これによって受信端末側にチューナを設置しこれを介してテレビを見るようなシステムが必要となり，受信システムもこれに対応させる必要が生じてきた。
これに対して，例えば衛星からの信号をダウンコンバートすることによって，地上波の電波と周波数配列を順序良く並べることによって，受信した信号を一本の同軸ケーブルで建造物内の受信端に伝送するようなシステムが提案されており，各受信点に設置された各放送に対応したチューナによって任意にチャンネルを選択できるようになっている。（例えば特許文献１参照）
ところで，地上ディジタル放送は，当面の間，地上アナログ地上放送とのサイマル放送となり，そのために送信側においては，従来からあるアナログ放送波を異なるチャンネルに移動させることが必要となり，これにともなって，受信側ではテレビやビデオの受信チャンネル用の変更を行ったり，アンテナの方向を変えたり増幅器の調整をしたりと言ったアナログーアナログ周波数変更対策が行われている。また，地域においては，新しく追加されたディジタル放送の電波によって，アナログ放送の電波に影響が出るところがあり，それのための対策であるデジタルーアナログ周波数変更対策などが必要となる場合がある。
このように新しく出たディジタル放送が，従来からある地上アナログ放送に影響を与えるような場合は，２０１１年に完全にディジタル放送に移行することもあり，簡単且つ安価で，素早く対策できる方法を勘案して実施されるのが望まれていた。
In recent years, television broadcasting has become multi-channel and digitized, and not only satellite broadcasting but also terrestrial waves have been digitized, which requires a system in which a tuner is installed on the receiving terminal side to watch television, It has become necessary for the receiving system to cope with this.
On the other hand, for example, by down-converting the signal from the satellite and arranging the terrestrial radio wave and the frequency array in order, the received signal is transmitted to the receiving end in the building with a single coaxial cable. Such a system has been proposed, and a channel can be arbitrarily selected by a tuner corresponding to each broadcast installed at each receiving point. (For example, see Patent Document 1)
By the way, terrestrial digital broadcasting will be simulcast with terrestrial analog terrestrial broadcasting for the time being. For this reason, on the transmitting side, it is necessary to move conventional analog broadcasting waves to different channels. On the receiving side, analog-to-analog frequency change measures such as changing the reception channel for TV and video, changing the direction of the antenna, and adjusting the amplifier are taken. In addition, in some areas, newly added digital broadcasting radio waves may affect analog broadcasting radio waves, which may require countermeasures such as digital-analog frequency change.
If the newly released digital broadcasting affects the existing terrestrial analog broadcasting, it may be completely switched to digital broadcasting in 2011, and it is considered a simple, inexpensive and quick method. It was hoped that this would be done.

特開平１０−２２４６９９号公報Japanese Patent Laid-Open No. 10-224699

ところが例えばビルやマンションのような既設のテレビ受信システムにおいて，新しく追加されたディジタル放送の電波の影響で，従来から受信している地上アナログ放送の受信に影響が出る場合，その対策を行うためには，既に設置されている受信システムの受信点にある機器を改修する必要が生じるので，それによってテレビの視聴者の視聴を長時間止めることなく工事をする事はできなかった。また，これに伴う改修費が嵩むと言った問題があった。
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，従来から一般に市販されているテレビ受信用機器とチューナ等を用い，別途地上ディジタル用の受信システムを構築し，この受信システムからの信号を従来からあるアナログ放送受信システムに簡単に付加可能な受信システムを提供することにある。
他の目的は，従来からあるテレビ受信システムの受信点に設置された機器を大幅に改修することもなく，従って，これによってテレビの視聴者の視聴を長時間止めることなく工事をする事ができるテレビ受信システムを提供することにある。
他の目的は，一般的に市販されているテレビ受信機器やチューナ等を利用して受信システムが構築することによって，改修に伴う費用が嵩むと言った事のない受信システムを提供することにある。
However, in existing television reception systems such as buildings and condominiums, in order to take measures against the reception of terrestrial analog broadcasts that have been received due to the effects of newly added digital broadcast radio waves. Since it is necessary to repair the equipment at the receiving point of the receiving system already installed, it was not possible to perform the construction without stopping the viewing of the TV viewer for a long time. In addition, there was a problem that the repair costs associated with this increased.
Therefore, the present invention has been made to solve such problems,
The purpose is to build a separate terrestrial digital reception system using TV receivers and tuners that are generally available on the market, and easily add signals from this reception system to conventional analog broadcast reception systems. It is to provide a possible receiving system.
Another purpose is that the equipment installed at the reception point of the conventional television reception system is not significantly modified, and therefore, construction can be performed without stopping the viewing of the television viewer for a long time. To provide a television receiving system.
Another object is to provide a receiving system that has never been said to increase the costs associated with refurbishment by constructing the receiving system using a commercially available television receiver or tuner. .

上記課題を解決するために，請求項１の発明は，テレビ放送を少なくとも第１のアンテナで受信し，該受信信号を建造物内に配設した１つ若しくは２つ以上の受信端へ，第１の同軸ケーブルによって引き込むように構成されたテレビ受信システムと，前記テレビ受信システムとは別に設けられ，地上ディジタル放送を受信する地上ディジタル放送受信システムと，を備えた受信システムである。前記テレビ受信システムは，前記第１の同軸ケーブルの途中に混合手段が設けられ，この混合手段は，前記第１のアンテナにて受信した前記受信信号と，該受信信号とは異なる帯域の周波数帯の信号であって前記地上ディジタル放送受信システムから出力された伝送信号と，を混合するように構成されており，前記地上ディジタル放送受信システムは，地上ディジタル放送受信用の第２のアンテナと，前記第２のアンテナで受信した受信信号であるディジタル放送信号を伝送する第２の同軸ケーブルと，前記第２のアンテナから前記第２の同軸ケーブルを介して伝送されてきた前記ディジタル放送信号を選局・復調するための地上ディジタル放送用受信装置と，前記地上ディジタル放送用受信装置において復調された信号を，前記第２のアンテナで受信した前記ディジタル放送信号に妨害を与えない，該ディジタル放送信号とは異なる帯域の周波数帯のテレビチャンネル信号に変調する変調器と，前記第２の同軸ケーブルの途中に設けられ，前記第２のアンテナで受信した前記ディジタル放送信号が入力されて該ディジタル放送信号を前記第２の同軸ケーブルにおける前記地上ディジタル放送用受信装置側へ出力すると共に，前記第２の同軸ケーブルにおける前記地上ディジタル放送受信装置側から入力された，前記地上ディジタル放送用受信装置側から伝送されてきた前記テレビチャンネル信号を，前記伝送信号として第３の同軸ケーブルを介して前記混合手段へ出力するよう構成された第１の混合・分波手段と，前記第２の同軸ケーブルにおける前記第１の混合・分波手段と前記地上ディジタル放送用受信装置との間に設けられ，前記第１の混合・分波手段から出力された前記ディジタル放送信号が入力されて該ディジタル放送信号を前記地上ディジタル放送用受信装置へ出力すると共に，前記変調器から前記テレビチャンネル信号が入力されて該テレビチャンネル信号を前記第２の同軸ケーブルにおける前記第１の混合・分波手段側へ出力するよう構成された第２の混合・分波手段と，を備える。そして，前記テレビ受信システムは，前記第１のアンテナで受信した受信信号と，前記地上ディジタル放送受信システムから出力された前記伝送信号とを前記混合手段により混合して，該混合後の各信号を前記第１の同軸ケーブルを介して前記受信端へ伝送するように構成した。 In order to solve the above problems, the invention of claim 1 is characterized in that a television broadcast is received by at least a first antenna, and the received signal is sent to one or more receiving ends disposed in a building. A receiving system comprising a television receiving system configured to be pulled in by one coaxial cable and a terrestrial digital broadcast receiving system that is provided separately from the television receiving system and receives terrestrial digital broadcasting. The television receiving system, the mixing means is provided in the middle of the first coaxial cable, the mixing means, and the received signal received by the first antenna, the frequency band of a different band than the received signal a transmission signal output from the terrestrial digital broadcasting receiving system comprising a signal, is configured to mix, the terrestrial digital broadcasting receiving system includes a second antenna for terrestrial digital broadcasting receiver, wherein A second coaxial cable that transmits a digital broadcast signal that is a received signal received by the second antenna, and the digital broadcast signal that is transmitted from the second antenna via the second coaxial cable are selected. A terrestrial digital broadcast receiver for demodulating, and a signal demodulated by the terrestrial digital broadcast receiver, Provided in the middle of the second coaxial cable, a modulator for modulating a television channel signal in a frequency band different from the digital broadcast signal, which does not interfere with the digital broadcast signal received by The digital broadcast signal received by the second antenna is input and output to the terrestrial digital broadcast receiver in the second coaxial cable, and the terrestrial digital broadcast in the second coaxial cable. The TV channel signal input from the receiving device side and transmitted from the terrestrial digital broadcast receiving device side is output as the transmission signal to the mixing means via a third coaxial cable. 1 mixing / demultiplexing means, and the first mixing / demultiplexing means in the second coaxial cable and the front The digital broadcast signal provided from the first terrestrial digital broadcast receiver is input from the first mixing / demultiplexing means, and the digital broadcast signal is output to the digital terrestrial broadcast receiver. The second mixing / demultiplexing means configured to receive the television channel signal from the modulator and to output the television channel signal to the first mixing / demultiplexing means side of the second coaxial cable. And. Then, the television receiving system mixes the received signal received by the first antenna and the transmission signal output from the terrestrial digital broadcast receiving system by the mixing means, and outputs each signal after mixing. Transmission is made to the receiving end via the first coaxial cable.

請求項２の発明は，請求項１に記載の受信システムにおいて，前記テレビ受信システムは，少なくともＵＨＦ帯の地上アナログ放送を受信するように構成されており，前記地上ディジタル放送受信システムから出力される伝送信号は，前記テレビ受信システムが受信している受信信号に妨害を与えない，ＶＨＦ帯のテレビチャンネル信号であるように構成した。 The invention of claim 2 is the receiving system according to claim 1, wherein the television receiver system is configured to receive terrestrial analog broadcasting at least UHF band is output from the terrestrial digital broadcasting receiving system transmission signal that is not disturbing to the received signals the television reception system is receiving, is configured as a television channeling No. Le signal in the VHF band.

請求項３の発明は，請求項１又は請求項２に記載の受信システムにおいて，少なくとも，前記地上ディジタル受信システムにおける前記地上ディジタル放送用受信装置と，前記第２の混合・分波手段と，前記変調器と，を建造物内や収納ボックス等に収納した。 A third aspect of the present invention, in the receiving system according to claim 1 or claim 2, at least, said terrestrial digital broadcast receiving apparatus in the digital terrestrial reception system, and the second mixing-demultiplexer means, The modulator is stored in a building or a storage box.

請求項１の発明によれば，テレビ放送を少なくとも第１のアンテナで受信し，該受信信号を建造物内に配設した１つ若しくは２つ以上の受信端へ，第１の同軸ケーブルによって引き込むように構成されたテレビ受信システムと，前記テレビ受信システムとは別に設けられ，地上ディジタル放送を受信する地上ディジタル放送受信システムと，を備えた受信システムである。前記テレビ受信システムは，前記第１の同軸ケーブルの途中に混合手段が設けられ，この混合手段は，前記第１のアンテナにて受信した前記受信信号と，該受信信号とは異なる帯域の周波数帯の信号であって前記地上ディジタル放送受信システムから出力された伝送信号と，を混合するように構成されており，前記地上ディジタル放送受信システムは，地上ディジタル放送受信用の第２のアンテナと，前記第２のアンテナで受信した受信信号であるディジタル放送信号を伝送する第２の同軸ケーブルと，前記第２のアンテナから前記第２の同軸ケーブルを介して伝送されてきた前記ディジタル放送信号を選局・復調するための地上ディジタル放送用受信装置と，前記地上ディジタル放送用受信装置において復調された信号を，前記第２のアンテナで受信した前記ディジタル放送信号に妨害を与えない，該ディジタル放送信号とは異なる帯域の周波数帯のテレビチャンネル信号に変調する変調器と，前記第２の同軸ケーブルの途中に設けられ，前記第２のアンテナで受信した前記ディジタル放送信号が入力されて該ディジタル放送信号を前記第２の同軸ケーブルにおける前記地上ディジタル放送用受信装置側へ出力すると共に，前記第２の同軸ケーブルにおける前記地上ディジタル放送受信装置側から入力された，前記地上ディジタル放送用受信装置側から伝送されてきた前記テレビチャンネル信号を，前記伝送信号として第３の同軸ケーブルを介して前記混合手段へ出力するよう構成された第１の混合・分波手段と，前記第２の同軸ケーブルにおける前記第１の混合・分波手段と前記地上ディジタル放送用受信装置との間に設けられ，前記第１の混合・分波手段から出力された前記ディジタル放送信号が入力されて該ディジタル放送信号を前記地上ディジタル放送用受信装置へ出力すると共に，前記変調器から前記テレビチャンネル信号が入力されて該テレビチャンネル信号を前記第２の同軸ケーブルにおける前記第１の混合・分波手段側へ出力するよう構成された第２の混合・分波手段と，を備える。そして，前記テレビ受信システムは，前記第１のアンテナで受信した受信信号と，前記地上ディジタル放送受信システムから出力された前記伝送信号とを前記混合手段により混合して，該混合後の各信号を前記第１の同軸ケーブルを介して前記受信端へ伝送するように構成したので，
地上ディジタル用の受信システムを別途構築することによって，この受信システムからの信号を，従来からある前記テレビ受信システムの受信点に設置された機器を大幅に改修することもなく簡単且つ安価に付加するができる。
加えて，大幅な改修工事を必要としないことで，テレビの視聴者の視聴を長時間止めることなく，地上ディジタル放送の受信システムの追加工事を短時間に構築する事ができ，更には，地上ディジタル用の受信システムが，一般的に市販されているテレビ受信機器やチューナ等を利用して構築できることから，改修に伴う費用が安価にできるといった有効性の高い受信システムを提供できるのである。 According to the invention of claim 1, a television broadcast is received by at least the first antenna, and the received signal is drawn into one or more receiving ends arranged in the building by the first coaxial cable. A television receiver system configured as described above and a terrestrial digital broadcast receiver system that is provided separately from the television receiver system and receives terrestrial digital broadcasts. The television receiving system, the mixing means is provided in the middle of the first coaxial cable, the mixing means, and the received signal received by the first antenna, the frequency band of a different band than the received signal a transmission signal output from the terrestrial digital broadcasting receiving system comprising a signal, is configured to mix, the terrestrial digital broadcasting receiving system includes a second antenna for terrestrial digital broadcasting receiver, wherein A second coaxial cable that transmits a digital broadcast signal that is a received signal received by the second antenna, and the digital broadcast signal that is transmitted from the second antenna via the second coaxial cable are selected. A terrestrial digital broadcast receiver for demodulating, and a signal demodulated by the terrestrial digital broadcast receiver, Provided in the middle of the second coaxial cable, a modulator for modulating a television channel signal in a frequency band different from the digital broadcast signal, which does not interfere with the digital broadcast signal received by The digital broadcast signal received by the second antenna is input and output to the terrestrial digital broadcast receiver in the second coaxial cable, and the terrestrial digital broadcast in the second coaxial cable. The TV channel signal input from the receiving device side and transmitted from the terrestrial digital broadcast receiving device side is output as the transmission signal to the mixing means via a third coaxial cable. 1 mixing / demultiplexing means, and the first mixing / demultiplexing means in the second coaxial cable and the front The digital broadcast signal provided from the first terrestrial digital broadcast receiver is input from the first mixing / demultiplexing means, and the digital broadcast signal is output to the digital terrestrial broadcast receiver. The second mixing / demultiplexing means configured to receive the television channel signal from the modulator and to output the television channel signal to the first mixing / demultiplexing means side of the second coaxial cable. And. Then, the television receiving system mixes the received signal received by the first antenna and the transmission signal output from the terrestrial digital broadcast receiving system by the mixing means, and outputs each signal after mixing. Since it is configured to transmit to the receiving end via the first coaxial cable,
By constructing a separate terrestrial digital reception system, signals from this reception system can be added easily and inexpensively without significantly modifying the equipment installed at the reception point of the conventional television reception system. Can do.
In addition, since no major renovation work is required, additional work for a digital terrestrial broadcasting reception system can be constructed in a short time without stopping the viewing of TV viewers for a long time. Since a digital reception system can be constructed using a commercially available television receiver or tuner, it is possible to provide a highly effective reception system that can reduce the costs associated with refurbishment.

請求項２の発明によれば，請求項１に記載の受信システムにおいて，前記テレビ受信システムは，少なくともＵＨＦ帯の地上アナログ放送を受信するように構成されており，前記地上ディジタル放送受信システムから出力される伝送信号は，前記テレビ受信システムが受信している受信信号に妨害を与えない，ＶＨＦ帯のテレビチャンネル信号であるように構成したので，
前記混合手段及び前記混合・分波手段が，一般的に市販されている混合器（分配器）を用いて構成できるので安価に受信システムを構築することができる。 According to the invention of claim 2, in receiving system according to claim 1, wherein the television receiver system is configured to receive terrestrial analog broadcasting at least the UHF band, from the terrestrial digital broadcasting receiving system transmission signal to be outputted, not disturbing the reception signal where the television reception system is receiving, it is arranged that a television channeling No. Le signal in the VHF band,
It said mixing means and said mixing and demultiplexer means, generally commercially available mixer (distributor) can be constructed inexpensively receiving system can be constructed with.

請求項３の発明によれば，請求項１又は請求項２に記載の受信システムにおいて，少なくとも，前記地上ディジタル受信システムにおける前記地上ディジタル放送用受信装置と，前記第２の混合・分波手段と，前記変調器と，を建造物内や収納ボックス等に収納したので，
特別新たに防水性等を考慮した機器の開発を行うことなく，従来から一般に市販されているテレビ受信用機器とチューナ等を用い，地上ディジタル用の受信システムを構築することができ，この受信システムからの信号を，既設のアナログ放送受信システムに簡単且つ安価に付加することができ，改修に伴う費用が安価にできる。 According to the invention of claim 3, wherein in claim 1 or receiving system according to claim 2, at least, said terrestrial digital broadcast receiving apparatus in the digital terrestrial receiver system, the second mixing and demultiplexed means And the modulator is stored in a building or a storage box.
It is possible to construct a digital terrestrial receiving system using TV receivers and tuners that are generally available on the market without developing special equipment that is waterproof. Can be added to an existing analog broadcast receiving system easily and inexpensively, and the cost associated with renovation can be reduced.

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は本願の受信システムを示す第１の実施形態の概略ブロック図である。図２は第１実施形態の異なる例を示す。図３は混合・分波手段及び混合手段の周波数特性の一例を示す。
Hereinafter, an example of an embodiment embodying the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic block diagram of a first embodiment showing a receiving system of the present application. FIG. 2 shows a different example of the first embodiment. FIG. 3 shows an example of the frequency characteristics of the mixing / demultiplexing means and the mixing means.

図１に示す第１の実施形態のテレビ受信システムは，既設の地上アナログ放送を受信するテレビ受信システムに，新しく地上ディジタル放送の受信システムを付加するシステムを示している。この図において１は地上アナログ放送の受信を行うためのＵＨＦアンテナであり，受信した信号は同軸ケーブル３を介して屋内の分配器８からテレビ端子９に分配されて引き込まれ，テレビ受像機３６等に接続されている。
この実施例では，前記同軸ケーブル３にはＵＨＦ帯の信号とＶＨＦ帯の信号とを混合して出力する混合手段５が挿設されている。この混合手段は例えばコイルとコンデンサデ等から構成されたＵＨＦ帯を通過しＶＨＦ帯を阻止帯域とするフィルタ回路と，ＶＨＦ帯を通過しＵＨＦ帯を阻止帯域とするフィルタ回路から成る混合器である。この混合手段５の周波数特性についての一例を図３に示す。
尚，７はテレビ受信用増幅装置であって，混合手段５から出力されるＶＨＦとＵＨＦの混合信号を入力するライン入力を有する，増幅素子としてのトランジスタやＩＣ等から成る増幅装置であり，前述の分配数や同軸ケーブルの引き回し長さに応じて伝送損失を補償するために配設したものであり，端末におけるレベルに問題がなければ無くてもよい。
また，本願の実施例では前記テレビ受信システムにおける屋内側の構成を，４分配器８を用いた例を示したが，この実施例に限定されるものではなく，分岐器，分配器を組み合わせて構成してもよい事は言うまでもない
The television receiving system of the first embodiment shown in FIG. 1 shows a system in which a new digital terrestrial broadcast receiving system is added to an existing television receiving system that receives analog terrestrial broadcasts. In this figure, 1 is a UHF antenna for receiving terrestrial analog broadcasting, and the received signal is distributed and drawn from the indoor distributor 8 to the television terminal 9 via the coaxial cable 3, and is received by the television receiver 36, etc. It is connected to the.
In this embodiment, the coaxial cable 3 is provided with mixing means 5 for mixing and outputting a UHF band signal and a VHF band signal. This mixing means is a mixer comprising, for example, a filter circuit that passes through the UHF band and includes a VHF band and includes a filter circuit that passes through the VHF band and that uses the UHF band as a stop band. . An example of the frequency characteristics of the mixing means 5 is shown in FIG.
Reference numeral 7 denotes an amplifying apparatus for receiving television, which is an amplifying apparatus having a line input for inputting a mixed signal of VHF and UHF outputted from the mixing means 5 and composed of a transistor or an IC as an amplifying element. Are arranged to compensate for transmission loss in accordance with the number of distributions and the length of the coaxial cable, and may be eliminated if there is no problem in the level at the terminal.
Further, in the embodiment of the present application, the indoor side configuration in the television receiving system is shown as an example using the four distributors 8, but the present invention is not limited to this embodiment, and a combination of a branching device and a distributor is used. Needless to say, you can configure

次に，地上ディジタル放送の受信システムについて説明する。この図において１０は地上ディジタル放送の受信を行うためのＵＨＦアンテナであり，受信した信号は，同軸ケーブル１３と，該同軸ケーブル１３を介して対向配置された混合・分波手段１５，１６を介して地上ディジタル放送用受信装置３２に入力されている。
この第１の実施形態における前記混合・分波手段１５，１６は，それぞれＵＨＦ帯の信号とＶＨＦ帯の信号とを混合若しくは分波するように，例えばコイルとコンデンサデ等から構成されたＵＨＦ帯を通過しＶＨＦ帯を阻止帯域とするフィルタ回路と，ＶＨＦ帯を通過しＵＨＦ帯を阻止帯域とするフィルタ回路から成り，前記混合手段５と同様の周波数特性を有している。
Next, a reception system for digital terrestrial broadcasting will be described. In this figure, reference numeral 10 denotes a UHF antenna for receiving terrestrial digital broadcasts. The received signal is transmitted through a coaxial cable 13 and mixing / demultiplexing means 15 and 16 arranged opposite to each other via the coaxial cable 13. Are input to the terrestrial digital broadcast receiver 32.
In the first embodiment, the mixing / demultiplexing means 15 and 16 respectively mix and demultiplex a UHF band signal and a VHF band signal, for example, a UHF band composed of a coil and a capacitor device. And a filter circuit that passes the VHF band and uses the UHF band as a stop band, and has a frequency characteristic similar to that of the mixing means 5.

前記地上ディジタル放送用受信装置３２は，本願の実施例では，特にこのシステム専用に開発されたものでなくてもよく，例えば一般的に市販されている地上ディジタルチューナで有れば，本願に示すような地上ディジタル放送受信システムが安価に構築できる。
このチューナ３２で選局・復調された映像信号と音声信号は，図に示す映像ケーブル及び音声ケーブルを介してチューナ３２の近傍に配設された変調器３３に入力される。
この変調器３３は，前記チューナ３２において選局・復調された希望チャンネルの映像信号と音声信号から，例えばＶＨＦ帯における任意のテレビチャンネルのＲＦ信号に変調して出力するように構成されたものである。
尚，既設の前記テレビ受信システムにおいて，ＵＨＦ帯ばかりでなくＶＨＦ帯も受信しているならば，前記変調器３３において出力される前記ＲＦ信号は，受信しているＶＨＦ帯のテレビチャンネルに妨害を与えないようなチャンネル配置となるように設定する。
In the embodiment of the present application, the terrestrial digital broadcast receiver 32 does not have to be developed specifically for this system. For example, if it is a commercially available terrestrial digital tuner, it is shown in the present application. Such a terrestrial digital broadcast receiving system can be constructed at low cost.
The video signal and audio signal selected and demodulated by the tuner 32 are input to a modulator 33 disposed in the vicinity of the tuner 32 via the video cable and audio cable shown in the figure.
The modulator 33 is configured to modulate a desired channel video signal and audio signal selected and demodulated by the tuner 32 into, for example, an RF signal of an arbitrary TV channel in the VHF band and output the modulated signal. is there.
If the existing television reception system receives not only the UHF band but also the VHF band, the RF signal output from the modulator 33 interferes with the received television channel in the VHF band. Set so that the channel arrangement is not given.

前記変調器３３から出力されたＶＨＦ帯のＲＦ信号は，ＵＨＦ帯とＶＨＦ帯とを混合するフィルタ回路から成る前記混合・分波手段１６から，同軸ケーブル１３を介して，屋外に設置されたＵＨＦ帯の信号とＶＨＦ帯の信号とを分波する混合・分波手段１５側に出力される。
この混合・分波手段によって分波されたＶＨＦ帯のＲＦ信号は，請求孔に記載の伝送信号であり，この伝送信号は，同軸ケーブル２３を介して，前記テレビ受信システムの混合手段５のＶＨＦ入力に入力されて，前記アンテナ１によって受信されたアナログ放送のＵＨＦ帯の信号と混合されて受信端末側に出力される。
The RF signal in the VHF band output from the modulator 33 is transmitted from the mixing / demultiplexing means 16 comprising a filter circuit for mixing the UHF band and the VHF band to the UHF installed outdoors via the coaxial cable 13. The signal is output to the mixing / demultiplexing means 15 for demultiplexing the band signal and the VHF band signal.
The VHF band RF signal demultiplexed by the mixing / demultiplexing means is the transmission signal described in the claim hole, and this transmission signal is transmitted through the coaxial cable 23 to the VHF of the mixing means 5 of the television receiving system. The signal is input to the input, mixed with the UHF band signal of the analog broadcast received by the antenna 1, and output to the receiving terminal side.

この第１の実施形態における地上ディジタル放送受信システムでは，特に混合・分波手段１６と，該混合・分波手段より後側に配設される前記地上ディジタル放送受信装置３２と変調器３３機器に付いては，建造物内や収納ボックス等に収納するようにしておけば，特別，これらのケース等は防水構造を必要としないので，一般的に市販されているこれらのテレビ受信用機器を用いて構成することができ，安価に且つ簡単にテレビ受信システムが構築できる。
In the terrestrial digital broadcast receiving system according to the first embodiment, in particular, the mixing / demultiplexing means 16 and the terrestrial digital broadcast receiving apparatus 32 and the modulator 33 provided on the rear side of the mixing / demultiplexing means. If it is stored in a building or storage box, etc., specially, these cases do not require a waterproof structure, so use these commercially available television receivers. Thus, a television receiving system can be constructed easily and inexpensively.

このように，本願に示すテレビ受信システムによれば，新しく始まった地上ディジタル放送によって，従来から受信しているアナログ放送の受信に影響が出るような場合であっても，地上ディジタル放送受信システムにおいて受信したディジタル信号を，特別新たに機器の開発を行うことなく，一般に市販されているテレビ受信用機器やチューナ等を用いてチャンネル変換することができる地上ディジタル放送受信システムを構築し，この受信システムからの信号を，既設のテレビ受信システムに，簡単且つ安価に付加することができるものであり，加えて，既設の前記テレビ受信システムの受信点に設置された機器を大幅に改修することもないので，地上ディジタル放送の受信システムの追加工事が，テレビの視聴者の視聴を長時間止めることなく，短時間に構築する事ができ，延いては，一般的に市販されているテレビ受信機器やチューナ等を利用してテレビ受信システムが構築できることから，改修に伴う費用が安価にできるといった有効性の高いテレビ受信システムを提供できるのである。
尚，図２に示すように，本願にかかる第１実施形態の異なる実施例として，混合手段５とテレビ受信用増幅装置７の替わりに，少なくともＶＨＦ帯及びＵＨＦ帯の信号をそれぞれ別入力で入力し，所定のレベル増幅した後に，夫々の信号を混合して出力するように構成されたテレビ受信用増幅装置１４を用いて構成してもよい。
更に，本願の実施例では混合手段５及び前記混合・分波手段１５，１６はＶＨＦ帯とＵＨＦ帯を混合若しくは分波する用に構成したが，ＵＨＦ帯のなかで混合・分波できるのであれば，ＵＨＦ帯とＵＨＦ帯の混合・分波器であってもよいなど，特に実施例に限定されるものではない。

尚，本発明は上記実施の形態に限定されるものではなく，本発明の趣旨を逸脱しない範囲で各部の構成を適宜に変更して実施することも可能である。
As described above, according to the television receiving system shown in the present application, even if the newly started terrestrial digital broadcasting affects the reception of the analog broadcasting received conventionally, the terrestrial digital broadcasting receiving system A digital terrestrial broadcast receiving system that can convert received digital signals using a commercially available television receiving device, tuner, etc. without developing a new device is constructed. Can be easily and inexpensively added to the existing television reception system, and in addition, the equipment installed at the reception point of the existing television reception system is not significantly modified. So, the additional construction of the digital terrestrial broadcasting reception system will stop TV viewers from watching for a long time. It can be constructed in a short time, and as a result, a television reception system can be constructed using a commercially available television receiver or tuner, etc., so that the cost of renovation can be reduced. A highly effective television receiving system can be provided.
As shown in FIG. 2, as a different example of the first embodiment according to the present application, at least a VHF band signal and a UHF band signal are input as separate inputs instead of the mixing means 5 and the television receiving amplifying device 7. Then, after amplification at a predetermined level, each signal may be mixed and output, and the television reception amplifying device 14 configured to output the signals may be used.
Further, in the embodiment of the present application, the mixing means 5 and the mixing / demultiplexing means 15 and 16 are configured to mix or demultiplex the VHF band and the UHF band. However, the mixing and demultiplexing can be performed in the UHF band. For example, a UHF band and a UHF band mixer / demultiplexer may be used, and the present invention is not particularly limited to the embodiment.

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

本願の受信システムを示す第１の実施形態の概略ブロック図である。1 is a schematic block diagram of a first embodiment showing a receiving system of the present application. 第１実施形態の異なる例を示す。The example from which 1st Embodiment differs is shown. 混合・分波手段及び混合手段の周波数特性の実施例を示す。The example of the frequency characteristic of a mixing / demultiplexing means and a mixing means is shown.

符号の説明Explanation of symbols

１…ＵＨＦアンテナ（アナログ放送用），３…同軸ケーブル，５…混合手段，７…テレビ受信用増幅装置（Ｖ・Ｕ混合入力），８…分配器，９…テレビ端子，１０…ＵＨＦアンテナ（ディジタル放送用），１３…同軸ケーブル，１４…テレビ受信用増幅装置（Ｖ・Ｕ・ＢＳ別入力），１５…混合・分波手段，１６…混合・分波手段，２０…ＢＳアンテナ，２１…ＶＨＦアンテナ（アナログ放送用），２３…同軸ケーブル，３１…分波器，３２…地上ディジタル放送用受信装置（チューナ），３３…変調器，３５…ＢＳチューナ，３６…テレビ受像機 DESCRIPTION OF SYMBOLS 1 ... UHF antenna (for analog broadcasting), 3 ... Coaxial cable, 5 ... Mixing means, 7 ... Amplifying device for TV reception (V / U mixed input), 8 ... Distributor, 9 ... TV terminal, 10 ... UHF antenna ( (For digital broadcasting), 13 ... coaxial cable, 14 ... amplifying device for TV reception (input separately for V, U, BS), 15 ... mixing / demultiplexing means, 16 ... mixing / demultiplexing means, 20 ... BS antenna, 21 ... VHF antenna (for analog broadcasting), 23 ... coaxial cable, 31 ... duplexer, 32 ... terrestrial digital broadcasting receiver (tuner), 33 ... modulator, 35 ... BS tuner, 36 ... television receiver

Claims (3)

テレビ放送を少なくとも第１のアンテナで受信し，該受信信号を建造物内に配設した１つ若しくは２つ以上の受信端へ，第１の同軸ケーブルによって引き込むように構成されたテレビ受信システムと，
前記テレビ受信システムとは別に設けられ，地上ディジタル放送を受信する地上ディジタル放送受信システムと，
を備え、
前記テレビ受信システムは，前記第１の同軸ケーブルの途中に混合手段が設けられ，
前記混合手段は，前記第１のアンテナにて受信した前記受信信号と，該受信信号とは異なる帯域の周波数帯の信号であって前記地上ディジタル放送受信システムから出力された伝送信号と，を混合するように構成されており，
前記地上ディジタル放送受信システムは，
前記地上ディジタル放送受信用の第２のアンテナと，
前記第２のアンテナで受信した受信信号であるディジタル放送信号を伝送する第２の同軸ケーブルと，
前記第２のアンテナから前記第２の同軸ケーブルを介して伝送されてきた前記ディジタル放送信号を選局・復調するための地上ディジタル放送用受信装置と，
前記地上ディジタル放送用受信装置において復調された信号を，前記第２のアンテナで受信した前記ディジタル放送信号に妨害を与えない，該ディジタル放送信号とは異なる帯域の周波数帯のテレビチャンネル信号に変調する変調器と，
前記第２の同軸ケーブルの途中に設けられ，前記第２のアンテナで受信した前記ディジタル放送信号が入力されて該ディジタル放送信号を前記第２の同軸ケーブルにおける前記地上ディジタル放送用受信装置側へ出力すると共に，前記第２の同軸ケーブルにおける前記地上ディジタル放送受信装置側から入力された，前記地上ディジタル放送用受信装置側から伝送されてきた前記テレビチャンネル信号を，前記伝送信号として第３の同軸ケーブルを介して前記混合手段へ出力するよう構成された第１の混合・分波手段と，
前記第２の同軸ケーブルにおける前記第１の混合・分波手段と前記地上ディジタル放送用受信装置との間に設けられ，前記第１の混合・分波手段から出力された前記ディジタル放送信号が入力されて該ディジタル放送信号を前記地上ディジタル放送用受信装置へ出力すると共に，前記変調器から前記テレビチャンネル信号が入力されて該テレビチャンネル信号を前記第２の同軸ケーブルにおける前記第１の混合・分波手段側へ出力するよう構成された第２の混合・分波手段と，
を備え，
前記テレビ受信システムは、前記第１のアンテナで受信した受信信号と，前記地上ディジタル放送受信システムから出力された前記伝送信号とを前記混合手段により混合して，該混合後の各信号を前記第１の同軸ケーブルを介して前記受信端へ伝送するように構成されていることを特徴とする受信システム。 A television receiving system configured to receive a television broadcast by at least a first antenna and to draw the received signal into one or more receiving ends disposed in a building by a first coaxial cable; ,
A terrestrial digital broadcast receiving system that is provided separately from the television receiving system and receives terrestrial digital broadcast;
With
The television receiving system is provided with mixing means in the middle of the first coaxial cable,
The mixing means mixes the received signal received by the first antenna and a transmission signal output from the terrestrial digital broadcast receiving system and having a frequency band different from the received signal. is configured to,
The terrestrial digital broadcast receiving system includes:
A second antenna for receiving the terrestrial digital broadcast;
A second coaxial cable for transmitting a digital broadcast signal which is a received signal received by the second antenna;
A terrestrial digital broadcast receiver for selecting and demodulating the digital broadcast signal transmitted from the second antenna via the second coaxial cable;
The signal demodulated by the terrestrial digital broadcast receiver is modulated into a television channel signal in a frequency band different from the digital broadcast signal, which does not interfere with the digital broadcast signal received by the second antenna. A modulator,
Provided in the middle of the second coaxial cable, the digital broadcast signal received by the second antenna is input, and the digital broadcast signal is output to the terrestrial digital broadcast receiver in the second coaxial cable. In addition, the third coaxial cable is used as the transmission signal, with the television channel signal transmitted from the terrestrial digital broadcast receiver side input from the terrestrial digital broadcast receiver side in the second coaxial cable as the transmission signal. A first mixing / demultiplexing means configured to output to the mixing means via
Provided between the first mixing / demultiplexing means and the terrestrial digital broadcast receiving apparatus in the second coaxial cable, and the digital broadcast signal output from the first mixing / demultiplexing means is input. The digital broadcast signal is output to the terrestrial digital broadcast receiver, and the television channel signal is input from the modulator, and the television channel signal is converted into the first mixing / dividing signal in the second coaxial cable. A second mixing / demultiplexing means configured to output to the wave means side;
With
The television reception system mixes the reception signal received by the first antenna and the transmission signal output from the terrestrial digital broadcast reception system by the mixing means, and mixes each signal after the mixing with the first signal. A receiving system configured to transmit to the receiving end via one coaxial cable. 前記テレビ受信システムは，少なくともＵＨＦ帯の地上アナログ放送を受信するように構成されており，
前記地上ディジタル放送受信システムから出力される前記伝送信号は，前記テレビ受信システムが受信している受信信号に妨害を与えない，ＶＨＦ帯の前記テレビチャンネル信号である
ことを特徴とする請求項１に記載の受信システム。 The television receiving system is configured to receive at least a UHF band terrestrial analog broadcast,
The transmission signal outputted from the terrestrial digital broadcasting receiving system, not disturbing the reception signal where the television reception system is receiving, Ru said television channeling Le signal der VHF band
Receiving system according to claim 1, characterized in that. 少なくとも，前記地上ディジタル放送受信システムにおける前記地上ディジタル放送用受信装置と，前記第２の混合・分波手段と，前記変調器と，を建造物内や収納ボックス等に収納したことを特徴とした請求項１又は請求項２に記載の受信システム。 At least the terrestrial digital broadcast receiving device in the terrestrial digital broadcast receiving system, the second mixing / demultiplexing means, and the modulator are housed in a building or a storage box. receiving system according to claim 1 or claim 2.
JP2005141758A 2005-05-13 2005-05-13 Receiving system Expired - Fee Related JP4777686B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005141758A JP4777686B2 (en) 2005-05-13 2005-05-13 Receiving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005141758A JP4777686B2 (en) 2005-05-13 2005-05-13 Receiving system

Publications (2)

Publication Number Publication Date
JP2006319798A JP2006319798A (en) 2006-11-24
JP4777686B2 true JP4777686B2 (en) 2011-09-21

Family

ID=37540035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005141758A Expired - Fee Related JP4777686B2 (en) 2005-05-13 2005-05-13 Receiving system

Country Status (1)

Country Link
JP (1) JP4777686B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5026774B2 (en) 2006-11-28 2012-09-19 大陽日酸株式会社 Distillation equipment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2654664B2 (en) * 1988-04-25 1997-09-17 松下電工株式会社 TV intercom system
JP2004032231A (en) * 2002-06-25 2004-01-29 Toshiba Corp Television signal receiving apparatus
JP4204387B2 (en) * 2003-05-30 2009-01-07 八木アンテナ株式会社 Millimeter wave communication method

Also Published As

Publication number Publication date
JP2006319798A (en) 2006-11-24

Similar Documents

Publication Publication Date Title
KR100445108B1 (en) Receiver, Receiving Method and Terminal Device
JP2006245803A (en) Digital broadcasting signal transmitting system, its transmitting processor and receiving processor
JP4777686B2 (en) Receiving system
WO2011105569A1 (en) Multiplexing device, encoder, digital modulator, and autonomous broadcasting system
JP2006295497A (en) Digital broadcast signal transmission system and transmission processor thereof
JP2022176779A (en) frequency conversion transmission system
JP4800588B2 (en) Joint reception system
JP4530833B2 (en) Terrestrial digital broadcast signal level adjusting apparatus and television joint receiving method
KR100667191B1 (en) T-dmb repeater by using antenna for receiving tv broadcasting
US20130219436A1 (en) Equipment for reception systems, particularly a single cable system for multiple users
JP4630109B2 (en) Receiving system and receiving device
JP4127556B2 (en) Terrestrial digital broadcast retransmitter
KR200237127Y1 (en) AMP for combining and dividing satellite resonance input
JP2007151066A (en) Television receiving system
JP2002354473A (en) Down-converter and up-converter and catv system
JP3107548B1 (en) TV joint reception system
JP3940028B2 (en) Satellite reception system
WO2004017630A1 (en) Apparatus for dividing signal and method thereof
RU2457633C1 (en) System of community reception of television signals with various modulation types
JP4140130B2 (en) Receiving converter and receiving antenna
KR200246794Y1 (en) AMP for satellite resonance input
JP4593532B2 (en) Satellite signal switching device and satellite signal receiving system
JP4777689B2 (en) CATV system
JPH07154708A (en) Video signal receiver
JP2009253780A (en) Broadcast receiver and method of mounting tuner module

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080502

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100831

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20101013

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20101027

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20101207

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110202

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110607

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110630

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140708

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees