JP2010010755A - Television broadcast signal transmission system, power supply unit and signal processing apparatus - Google Patents

Television broadcast signal transmission system, power supply unit and signal processing apparatus Download PDF

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JP2010010755A
JP2010010755A JP2008164384A JP2008164384A JP2010010755A JP 2010010755 A JP2010010755 A JP 2010010755A JP 2008164384 A JP2008164384 A JP 2008164384A JP 2008164384 A JP2008164384 A JP 2008164384A JP 2010010755 A JP2010010755 A JP 2010010755A
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power supply
voltage
signal processing
power
television broadcast
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Kazuo Sugiyama
和生 杉山
Jun Uemura
順 植村
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Maspro Denkoh Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To promote energy saving in a system as a whole, by fully suppressing power consumption using a power supply unit for generating power supply voltage, upon receiving power supply from a commercial power supply and a power supply unit, such as, a solar photovoltaic panel in a television broadcast signal transmission system for supplying power to a signal processing device. <P>SOLUTION: If a power supply voltage V1 of a coaxial cable 5 side, which is detected in a voltage detection circuit 26 becomes higher than a power supply voltage generated in a power supply circuit 20, an output control circuit 30 in a power supply unit 6 turns off a transistor 22 and stops power supply to a booster 4; and when the power supply voltage V1 drops to a lower limit voltage required for normal operation of the booster 4, the output control circuit turns on the transistor 22 to start power supply to the booster 4. In this way, the frequency of supplying power to the booster 4 can be improved by the photovoltaic panel 8 as a single unit; and if power cannot be supplied to the booster 4 by the photovoltaic panel 8 as a single unit, the photovoltaic panel 8 can be made to operate as an auxiliary power supply. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、テレビ放送信号を処理して端末側まで伝送するテレビ放送信号伝送システム、及び、このシステムを構築するのに好適な電源装置及び信号処理装置に関する。   The present invention relates to a television broadcast signal transmission system that processes a television broadcast signal and transmits it to a terminal side, and a power supply device and a signal processing device suitable for constructing this system.

従来、テレビ放送信号伝送システムにおいて用いられる信号処理装置としては、受信アンテナにて受信されたテレビ放送信号を増幅し、伝送線（同軸ケーブル等）を介して端末側に伝送する増幅装置（所謂ブースタ）が知られている。   Conventionally, as a signal processing device used in a television broadcast signal transmission system, an amplification device (a so-called booster) that amplifies a television broadcast signal received by a receiving antenna and transmits it to a terminal side via a transmission line (coaxial cable or the like). )It has been known.

そして、この増幅装置等の信号処理装置には、通常、商用電源から電源供給を受けて信号処理装置を動作させるための電源電圧を生成し、その生成した電源電圧を、伝送線を介して信号処理装置に供給する電源装置が設けられている。   The signal processing device such as an amplification device usually generates a power supply voltage for operating the signal processing device by receiving power supply from a commercial power supply, and the generated power supply voltage is signaled via a transmission line. A power supply device is provided to supply the processing device.

また、テレビ放送信号伝送システムにおいて、信号処理装置は、通常、屋外に設置されることから、信号処理装置内若しくは伝送線上に太陽光発電パネル（所謂太陽電池）を設置し、この太陽光発電パネルと端末側の電源装置とを利用して信号処理装置に電源供給を行うことも提案されている（例えば、特許文献１等、参照）。   In a television broadcast signal transmission system, since a signal processing device is usually installed outdoors, a solar power generation panel (so-called solar cell) is installed in the signal processing device or on a transmission line. It has also been proposed to supply power to a signal processing device using a power source device on the terminal side (see, for example, Patent Document 1).

この提案のテレビ放送信号伝送システムにおいては、太陽光発電パネルからの発電電圧と電源装置からの電源電圧とを比較し、発電電圧が電源電圧以上であるときには、発電電圧を信号処理装置に供給し、発電電圧が電源電圧よりも低いときには、電源電圧を信号処理装置に供給する。   In this proposed television broadcast signal transmission system, the power generation voltage from the photovoltaic power generation panel is compared with the power supply voltage from the power supply device. When the power generation voltage is equal to or higher than the power supply voltage, the power generation voltage is supplied to the signal processing device. When the generated voltage is lower than the power supply voltage, the power supply voltage is supplied to the signal processing device.

従って、この提案のテレビ放送信号伝送システムによれば、太陽光発電パネルからの発電電圧にて信号処理装置を駆動できるときには、電源装置からの電源供給を停止させて、電源装置での電力消費量を低減し、テレビ放送信号伝送システムの省エネ化を図ることができる。
特開２００７−４３８６５号公報 Therefore, according to this proposed television broadcast signal transmission system, when the signal processing device can be driven by the generated voltage from the photovoltaic power generation panel, the power supply from the power supply device is stopped and the power consumption in the power supply device is stopped. Can be reduced, and energy saving of the television broadcast signal transmission system can be achieved.
JP 2007-43865 A

しかしながら、上記提案のテレビ放送信号伝送システムにおいては、信号処理装置への電源供給に用いる装置を、太陽光発電パネルと電源装置との何れかに切り換えるだけであるので、太陽光発電パネルからの発電電圧が電源装置からの電源電圧よりも低い場合には、太陽光発電パネルからの発電電圧が増幅装置を駆動できる電圧であっても、或いは、太陽光発電パネルが電源装置に対する補助電源として利用できる状態であっても、信号処理装置は、電源装置からの電源電圧だけで駆動されることになり、電源装置での電力消費量を充分低減することができないという問題があった。   However, in the proposed television broadcast signal transmission system, the device used for power supply to the signal processing device is simply switched to either the photovoltaic power generation panel or the power supply device. When the voltage is lower than the power supply voltage from the power supply device, even if the power generation voltage from the solar power generation panel is a voltage that can drive the amplification device, or the solar power generation panel can be used as an auxiliary power source for the power supply device Even in this state, the signal processing device is driven only by the power supply voltage from the power supply device, and there is a problem that the power consumption of the power supply device cannot be reduced sufficiently.

本発明は、こうした問題に鑑みなされたものであり、商用電源から電源供給を受けて電源電圧を生成する電源装置と、太陽光発電パネル等の発電装置とを利用して信号処理装置に電源供給を行うテレビ放送信号伝送システムにおいて、発電装置からの発電出力を効率よく利用して、電源装置での消費電力量を抑え、システム全体の省エネ化を促進することを目的とする。   The present invention has been made in view of these problems, and supplies power to a signal processing device using a power supply device that receives power supply from a commercial power supply to generate a power supply voltage and a power generation device such as a photovoltaic power generation panel. In a television broadcast signal transmission system that performs the above, it is an object to efficiently use the power generation output from the power generation device to reduce the amount of power consumed by the power supply device and promote energy saving of the entire system.

かかる目的を達成するためになされた請求項１に記載の発明は、テレビ放送信号を処理して端末側に出力する信号処理手段と、商用電源から電源供給を受けて前記信号処理手段を動作させるのに要する電源電圧を生成し、前記信号処理装置に供給する電源手段と、自然エネルギを利用して発電し、発電電圧を前記電源手段から前記信号処理手段への電源供給経路に出力する発電手段とを備えたテレビ放送信号伝送システムであって、
前記電源供給経路を介して前記信号処理手段に供給される電源電圧を検出する検出手段と、該検出手段にて検出された電源電圧が、前記電源手段からの電源電圧よりも高い第１電圧以上になると、前記電源手段から前記信号処理手段への電源供給を停止させ、前記検出手段にて検出された電源電圧が、前記信号処理手段を動作させるのに必要な電圧範囲内で前記電源手段からの電源電圧よりも低い第２電圧以下になると、前記電源手段から前記信号処理手段への電源供給を開始させる制御手段と、を備えたことを特徴とする。 In order to achieve this object, the invention according to claim 1 is characterized in that a signal processing means for processing a television broadcast signal and outputting it to a terminal side, and receiving the power supply from a commercial power supply to operate the signal processing means. A power supply means for generating a power supply voltage required to supply the power to the signal processing device, and a power generation means for generating power using natural energy and outputting the power generation voltage to a power supply path from the power supply means to the signal processing means A television broadcast signal transmission system comprising:
Detection means for detecting a power supply voltage supplied to the signal processing means via the power supply path, and a power supply voltage detected by the detection means is not less than a first voltage higher than the power supply voltage from the power supply means Then, the power supply from the power supply means to the signal processing means is stopped, and the power supply voltage detected by the detection means is within the voltage range necessary for operating the signal processing means from the power supply means. Control means for starting supply of power from the power supply means to the signal processing means when the voltage is equal to or lower than a second voltage lower than the power supply voltage.

また、請求項２に記載の発明は、請求項１に記載のテレビ放送信号伝送システムにおいて、前記信号処理手段及び前記電源手段は別体に構成され、前記電源手段は、生成した電源電圧を、前記テレビ放送信号を伝送する伝送線を介して、前記信号処理手段に供給し、前記検出手段及び前記制御手段は、前記電源手段又は前記信号処理手段に設けられていることを特徴とする。   The invention according to claim 2 is the television broadcast signal transmission system according to claim 1, wherein the signal processing means and the power supply means are configured separately, and the power supply means generates the generated power supply voltage, The signal processing means is supplied via a transmission line for transmitting the television broadcast signal, and the detection means and the control means are provided in the power supply means or the signal processing means.

次に、請求項３に記載の発明は、請求項２に記載のテレビ放送信号伝送システムにおいて、前記伝送線には、前記信号処理手段が複数分散して配置されており、前記発電手段は、前記伝送線を介して複数の信号処理手段に発電電圧を供給することを特徴とする。   Next, according to a third aspect of the present invention, in the television broadcast signal transmission system according to the second aspect, a plurality of the signal processing means are distributed in the transmission line, and the power generation means The power generation voltage is supplied to the plurality of signal processing means via the transmission line.

また次に、請求項４に記載の発明は、請求項１〜請求項３の何れかに記載のテレビ放送信号伝送システムにおいて、前記制御手段は、前記電源供給経路と前記発電手段との接続点よりも電源手段側の電源供給経路上に設けられたスイッチ手段を備え、該スイッチ手段を介して当該電源供給経路の導通／遮断状態を切り換えることにより、前記電源手段から前記信号処理手段への電源供給状態を切り換えることを特徴とする。   According to a fourth aspect of the present invention, in the television broadcast signal transmission system according to any one of the first to third aspects, the control means is a connection point between the power supply path and the power generation means. Power supply path from the power supply means to the signal processing means by switching the conduction / cut-off state of the power supply path via the switch means. The supply state is switched.

また、請求項５に記載の発明は、請求項２又は請求項３に記載のテレビ放送信号伝送システムにおいて、前記検出手段及び前記制御手段は、前記電源手段に設けられ、前記制御手段は、前記電源手段による電源電圧生成動作の実行／停止を切り換えることにより、前記電源手段から前記信号処理手段への電源供給状態を切り換えることを特徴とする。   According to a fifth aspect of the present invention, in the television broadcast signal transmission system according to the second or third aspect, the detection means and the control means are provided in the power supply means, and the control means The power supply state from the power supply means to the signal processing means is switched by switching execution / stop of the power supply voltage generation operation by the power supply means.

また更に、請求項６に記載の発明は、請求項１〜請求項５の何れかに記載のテレビ放送信号伝送システムにおいて、前記制御手段は、前記第１電圧及び前記第２電圧の少なくとも一方を外部から設定するための電圧設定手段を備えたことを特徴とする。   Furthermore, the invention according to claim 6 is the television broadcast signal transmission system according to any one of claims 1 to 5, wherein the control means is configured to at least one of the first voltage and the second voltage. A voltage setting means for setting from the outside is provided.

一方、請求項７に記載の発明は、テレビ放送信号を処理して端末側に出力する信号処理装置と、自然エネルギを利用して発電し、発電電圧を前記信号処理装置に供給する発電装置とを備えたテレビ放送信号伝送システムにおいて、商用電源から電源供給を受けて前記信号処理装置を動作させるのに要する電源電圧を生成し、その生成した電源電圧を、前記テレビ放送信号を伝送する伝送線を介して前記信号処理装置に供給する電源装置であって、前記伝送線側の電源電圧を検出する検出手段と、該検出手段にて検出された電源電圧が、当該電源装置が生成する電源電圧よりも高い第１電圧以上になると、当該電源装置から前記信号処理装置への電源供給を停止させ、前記検出手段にて検出された電源電圧が、前記信号処理装置を動作させるのに必要な電圧範囲内で当該電源装置が生成する電源電圧よりも低い第２電圧以下になると、当該電源装置から前記信号処理装置への電源供給を開始させる制御手段と、を備えたことを特徴とする。   On the other hand, the invention according to claim 7 is a signal processing device that processes a television broadcast signal and outputs it to the terminal side, and a power generation device that generates power using natural energy and supplies the generated voltage to the signal processing device. A transmission line for generating a power supply voltage required to operate the signal processing apparatus upon receiving a power supply from a commercial power supply, and transmitting the generated power supply voltage to the television broadcast signal A power supply device that supplies power to the signal processing device via a detection unit that detects a power supply voltage on the transmission line side, and a power supply voltage detected by the detection unit is generated by the power supply device When the voltage becomes higher than the first voltage, the power supply from the power supply device to the signal processing device is stopped, and the power supply voltage detected by the detection means operates the signal processing device. And a control means for starting power supply from the power supply device to the signal processing device when the voltage is equal to or lower than a second voltage lower than the power supply voltage generated by the power supply device within a necessary voltage range. To do.

また、請求項８に記載の発明は、請求項７に記載の電源装置において、前記制御手段は、当該電源装置から前記伝送線への電源供給経路上に設けられたスイッチ手段を備え、該スイッチ手段を介して、当該電源装置から前記信号処理装置への電源供給状態を切り換えることを特徴とする。   According to an eighth aspect of the present invention, in the power supply device according to the seventh aspect, the control means includes a switch means provided on a power supply path from the power supply device to the transmission line. The power supply state from the power supply device to the signal processing device is switched through the means.

また、請求項９に記載の発明は、請求項７に記載の電源装置において、前記制御手段は、当該電源装置による電源電圧生成動作の実行／停止を切り換えることにより、当該電源装置から前記信号処理装置への電源供給状態を切り換えることを特徴とする。   Further, the invention according to claim 9 is the power supply device according to claim 7, wherein the control means switches the execution / stop of the power supply voltage generation operation by the power supply device, so that the signal processing is performed from the power supply device. The power supply state to the apparatus is switched.

また更に、請求項１０に記載の発明は、請求項７〜請求項９の何れかに記載の電源装置において、当該電源装置から前記信号処理装置への電源供給状態を報知する報知手段を備えたことを特徴とする。   Furthermore, the invention according to claim 10 is the power supply device according to any one of claims 7 to 9, further comprising an informing means for informing a power supply state from the power supply device to the signal processing device. It is characterized by that.

また、請求項１１に記載の発明は、請求項１〜請求項１０の何れかに記載の電源装置において、前記制御手段は、前記第１電圧及び前記第２電圧の少なくとも一方を外部から設定するための電圧設定手段を備えたことを特徴とする。   According to an eleventh aspect of the present invention, in the power supply device according to any one of the first to tenth aspects, the control means sets at least one of the first voltage and the second voltage from the outside. Voltage setting means is provided.

また次に、請求項１２に記載の発明は、電源装置からテレビ放送信号の伝送線を介して供給される電源電圧、及び、自然エネルギを利用して発電する発電装置から供給される発電電圧を、共通の電源供給経路を介して取り込み、内部回路駆動用の直流定電圧を生成する定電圧回路と、この定電圧回路から直流定電圧を受けて動作し、前記テレビ放送信号を処理して端末側に出力する信号処理回路と、を備えた信号処理装置であって、
前記電源供給経路の電圧を検出する検出手段と、前記電源供給経路を導通／遮断させるスイッチ手段と、前記検出手段にて検出された電圧が、前記電源装置から供給される電源電圧よりも高い第１電圧以上になると、前記スイッチ手段を介して前記電源供給経路を遮断させ、前記検出手段にて検出された電源電圧が、前記定電圧回路で前記直流定電圧を生成するのに必要な電圧範囲内で前記電源装置から供給される電源電圧よりも低い第２電圧以下になると、前記スイッチ手段を介して前記電源供給経路を導通させる制御手段と、を備えたことを特徴とする。 In a twelfth aspect of the present invention, a power supply voltage supplied from a power supply device via a television broadcast signal transmission line and a power generation voltage supplied from a power generation device that generates power using natural energy are provided. A constant voltage circuit that takes in through a common power supply path and generates a DC constant voltage for driving an internal circuit, and operates by receiving a DC constant voltage from the constant voltage circuit, and processes the TV broadcast signal to a terminal A signal processing circuit including a signal processing circuit that outputs to the side,
Detection means for detecting the voltage of the power supply path, switch means for conducting / cutting off the power supply path, and a voltage detected by the detection means is higher than the power supply voltage supplied from the power supply device. When the voltage exceeds one voltage, the power supply path is cut off via the switch means, and the power supply voltage detected by the detection means is a voltage range necessary for generating the DC constant voltage in the constant voltage circuit Control means for conducting the power supply path through the switch means when the voltage is equal to or lower than a second voltage lower than the power supply voltage supplied from the power supply device.

また、請求項１３に記載の発明は、請求項１２に記載の信号処理装置において、前記制御手段は、前記第１電圧及び前記第２電圧の少なくとも一方を外部から設定するための電圧設定手段を備えたことを特徴とする。   The signal processing device according to claim 12 is the signal processing apparatus according to claim 12, wherein the control means includes voltage setting means for setting at least one of the first voltage and the second voltage from the outside. It is characterized by having.

請求項１に記載のテレビ放送信号伝送システムにおいては、信号処理手段に対し、電源手段及び発電手段から共通の電源供給経路を介して同時に電源供給できるようにされている。   In the television broadcast signal transmission system according to the first aspect, the signal processing means can be simultaneously supplied with power from the power supply means and the power generation means through a common power supply path.

そして、検出手段が、その電源供給経路を介して信号処理手段に供給される電源電圧を検出し、制御手段が、その検出された電源電圧が、電源手段からの電源電圧よりも高い第１電圧以上になると、電源手段から信号処理手段への電源供給を停止させ、検出手段にて検出された電源電圧が、信号処理手段を動作させるのに必要な電圧範囲内で電源手段からの電源電圧よりも低い第２電圧以下になると、電源手段から信号処理手段への電源供給を開始させる。   The detecting means detects the power supply voltage supplied to the signal processing means via the power supply path, and the control means is a first voltage whose detected power supply voltage is higher than the power supply voltage from the power supply means. When the above is reached, the power supply from the power supply means to the signal processing means is stopped, and the power supply voltage detected by the detection means is within the voltage range necessary for operating the signal processing means to be higher than the power supply voltage from the power supply means. When the voltage is lower than the lower second voltage, power supply from the power supply means to the signal processing means is started.

このため、本発明のテレビ放送信号伝送システムによれば、発電手段からの発電電圧が電源手段にて生成される電源電圧よりも高くなって、検出手段にて検出される電源電圧が第１電圧以上になると、信号処理手段には発電手段単体で電源供給がなされ、その後、発電手段からの発電電圧が電源手段にて生成される電源電圧よりも低くなって、検出手段にて検出される電源電圧が第２電圧以下になるまで、発電手段単体での電源供給が継続されることになる。   Therefore, according to the television broadcast signal transmission system of the present invention, the power generation voltage from the power generation means is higher than the power supply voltage generated by the power supply means, and the power supply voltage detected by the detection means is the first voltage. When the above is reached, power is supplied to the signal processing means alone, and then the power generation voltage from the power generation means becomes lower than the power supply voltage generated by the power supply means, and the power detected by the detection means Until the voltage becomes equal to or lower than the second voltage, the power supply by the power generation unit alone is continued.

よって、本発明によれば、上述した従来装置に比べて発電手段単体での電源供給頻度を高め、電源手段での電力消費量を低減することができる。
また、電源手段から信号処理手段への電源供給経路には、発電手段が接続されており、電源手段が信号処理手段へ電源供給を行う際には、発電手段からの発電電力が電源供給経路に供給される。 Therefore, according to the present invention, the power supply frequency of the power generation unit alone can be increased and the power consumption of the power supply unit can be reduced as compared with the conventional device described above.
Further, a power generation means is connected to the power supply path from the power supply means to the signal processing means, and when the power supply means supplies power to the signal processing means, the generated power from the power generation means is supplied to the power supply path. Supplied.

このため、電源手段が信号処理手段へ電源供給を行う際には、発電手段は、電源手段に対する補助電源として動作し、電源手段の稼働率は、発電手段の発電量に応じて変化する。   For this reason, when the power supply means supplies power to the signal processing means, the power generation means operates as an auxiliary power supply for the power supply means, and the operating rate of the power supply means varies according to the amount of power generated by the power generation means.

従って、本発明によれば、電源手段が信号処理手段へ電源供給を行うときにも、従来に比べて電源手段での電力消費量を低減できる。
よって、本発明のテレビ放送信号伝送システムによれば、発電手段からの発電電力を有効に利用して、電源手段での電力消費量を充分低減することができるようになり、テレビ放送信号伝送システム全体の省エネ化を促進することが可能となる。 Therefore, according to the present invention, even when the power supply means supplies power to the signal processing means, the power consumption of the power supply means can be reduced as compared with the conventional case.
Therefore, according to the television broadcast signal transmission system of the present invention, it becomes possible to effectively use the generated power from the power generation means and sufficiently reduce the power consumption in the power supply means. It becomes possible to promote overall energy saving.

ここで、信号処理手段、電源手段及び発電手段は、テレビ放送信号伝送用の一つの機器として同一筐体内に設けてもよいが、電源手段は、商用電源から電源供給を受ける必要があるので、請求項２に記載のように、屋外に設置される信号処理手段とは別体で構成し、生成した電源電圧を、伝送線を介して信号処理手段に供給するようするとよい。そして、この場合、検出手段及び制御手段は、電源手段に設けるか、或いは、信号処理手段に設けるようにするとよい。   Here, the signal processing means, the power supply means, and the power generation means may be provided in the same casing as one device for transmitting a television broadcast signal, but the power supply means needs to be supplied with power from a commercial power supply. According to a second aspect of the present invention, it is preferable that the signal processing unit is installed separately from the signal processing unit installed outdoors, and the generated power supply voltage is supplied to the signal processing unit via the transmission line. In this case, the detection means and the control means may be provided in the power supply means or in the signal processing means.

また、請求項２に記載のテレビ放送伝送システムにおいて、伝送線に、信号処理手段が複数分散して配置されている場合には、請求項３に記載のように、発電手段を、伝送線を介して複数の信号処理手段に発電電圧を供給するよう構成するとよい。つまり、このように構成すれば、発電手段からの発電電力をより効率よく利用することができる。   Further, in the television broadcast transmission system according to claim 2, when a plurality of signal processing means are distributed on the transmission line, the power generation means is connected to the transmission line as described in claim 3. The power generation voltage may be supplied to a plurality of signal processing means. That is, if comprised in this way, the electric power generated from an electric power generation means can be utilized more efficiently.

次に、制御手段は、請求項４に記載のように、電源供給経路と発電手段との接続点よりも電源手段側の電源供給経路上に設けられたスイッチ手段を備え、このスイッチ手段を介して電源供給経路の導通／遮断状態を切り換えることにより、電源手段から信号処理手段への電源供給状態を切り換えるようにしてもよく、或いは、請求項５に記載のように、電源手段による電源電圧生成動作の実行／停止を切り換えることにより、電源手段から信号処理手段への電源供給状態を切り換えるようにしてもよい。   Next, as described in claim 4, the control means includes switch means provided on the power supply path on the power supply means side of the connection point between the power supply path and the power generation means, and through the switch means. The power supply state from the power supply means to the signal processing means may be switched by switching the conduction / cutoff state of the power supply path, or the power supply voltage generation by the power supply means as claimed in claim 5 The power supply state from the power supply means to the signal processing means may be switched by switching the execution / stop of the operation.

但し、制御手段を請求項５に記載のように構成する場合、検出手段及び制御手段は、電源手段に設ける必要はある。
また、制御手段には、請求項６に記載のように、第１電圧及び第２電圧の少なくとも一方を外部から設定するための電圧設定手段を設けるようにしてもよい。そしてこのようにすれば、電源手段が生成する電源電圧や信号処理手段を動作させるのに必要な最低電圧が、電源手段や信号処理手段の仕様等によって変化しても、その電圧に応じて第１電圧若しくは第２電圧を設定することができるようになり、制御手段を異なるシステムでそのまま利用できることになる。 However, when the control means is configured as described in claim 5, the detection means and the control means need to be provided in the power supply means.
Further, as described in claim 6, the control means may be provided with voltage setting means for setting at least one of the first voltage and the second voltage from the outside. In this way, even if the power supply voltage generated by the power supply means or the minimum voltage required to operate the signal processing means varies depending on the specifications of the power supply means or the signal processing means, One voltage or the second voltage can be set, and the control means can be used as it is in a different system.

一方、請求項７に記載の発明は、テレビ放送信号を処理して端末側に出力する信号処理装置と、自然エネルギを利用して発電し、発電電圧を前記信号処理装置に供給する発電装置とを備えたテレビ放送信号伝送システムにおいて、商用電源から電源供給を受けて信号処理装置を動作させるのに要する電源電圧を生成し、その生成した電源電圧を、テレビ放送信号を伝送する伝送線を介して信号処理装置に供給する電源装置に関する発明である。   On the other hand, the invention according to claim 7 is a signal processing device that processes a television broadcast signal and outputs it to the terminal side, and a power generation device that generates power using natural energy and supplies the generated voltage to the signal processing device. In a television broadcast signal transmission system provided with a power supply, a power supply voltage required to operate the signal processing device upon receiving a power supply from a commercial power supply is generated, and the generated power supply voltage is transmitted via a transmission line for transmitting a television broadcast signal. It is invention regarding the power supply device supplied to a signal processing apparatus.

そして、この電源装置においては、検出手段が、伝送線側の電源電圧を検出し、制御手段が、その検出された電源電圧が、当該電源装置が生成する電源電圧よりも高い第１電圧以上になると、当該電源装置から信号処理装置への電源供給を停止させ、検出手段にて検出された電源電圧が、信号処理装置を動作させるのに必要な電圧範囲内で当該電源装置が生成する電源電圧よりも低い第２電圧以下になると、当該電源装置から信号処理装置への電源供給を開始させる。   In this power supply device, the detection means detects the power supply voltage on the transmission line side, and the control means has the detected power supply voltage equal to or higher than the first voltage higher than the power supply voltage generated by the power supply device. Then, the power supply from the power supply device to the signal processing device is stopped, and the power supply voltage detected by the detecting means is generated by the power supply device within the voltage range necessary for operating the signal processing device. When the voltage is lower than the lower second voltage, power supply from the power supply device to the signal processing device is started.

従って、この電源装置を使用すれば本発明のテレビ放送伝送システムを構築できることになり、上述した効果を得ることができる。
また、請求項８に記載の電源装置において、制御手段は、当該電源装置から伝送線への電源供給経路上に設けられたスイッチ手段を備え、このスイッチ手段を介して、当該電源装置から信号処理装置への電源供給状態を切り換える。従って、請求項８に記載の電源装置によれば、請求項４に記載のテレビ放送伝送システムを構築できる。 Therefore, if this power supply apparatus is used, the television broadcast transmission system of the present invention can be constructed, and the above-described effects can be obtained.
The power supply apparatus according to claim 8, wherein the control means includes switch means provided on a power supply path from the power supply apparatus to the transmission line, and signal processing is performed from the power supply apparatus via the switch means. Switches the power supply status to the device. Therefore, according to the power supply device described in claim 8, the television broadcast transmission system described in claim 4 can be constructed.

また、請求項９に記載の電源装置において、制御手段は、当該電源装置による電源電圧生成動作の実行／停止を切り換えることにより、当該電源装置から信号処理装置への電源供給状態を切り換える。このため、請求項９に記載の電源装置によれば、請求項５に記載のテレビ放送伝送システムを構築できる。   Further, in the power supply device according to claim 9, the control means switches a power supply state from the power supply device to the signal processing device by switching execution / stop of the power supply voltage generation operation by the power supply device. Therefore, according to the power supply device described in claim 9, the television broadcast transmission system described in claim 5 can be constructed.

次に、請求項１０に記載の電源装置には、当該電源装置から信号処理装置への電源供給状態を報知する報知手段が設けられている。このため、請求項１０に記載の電源装置によれば、例えば、テレビ放送の受信装置と共に端末側に設置するようにすれば、使用者は、報知手段による報知状態から、屋外に設置された発電装置の動作状態を把握することができる。   Next, the power supply device according to the tenth aspect is provided with notifying means for notifying the power supply state from the power supply device to the signal processing device. For this reason, according to the power supply device of the tenth aspect, for example, if it is installed on the terminal side together with a television broadcast receiving device, the user can generate power generated outdoors from the notification state by the notification means. The operating state of the device can be grasped.

また、請求項１１に記載の電源装置においては、制御手段に、第１電圧及び第２電圧の少なくとも一方を外部から設定するための電圧設定手段が設けられている。このため、請求項１１に記載の電源装置によれば、請求項６と同様の効果を得ることができる。   In the power supply device according to the eleventh aspect, the control means is provided with voltage setting means for setting at least one of the first voltage and the second voltage from the outside. For this reason, according to the power supply device of Claim 11, the effect similar to Claim 6 can be acquired.

また次に、請求項１２に記載の発明は、電源装置からテレビ放送信号の伝送線を介して供給される電源電圧、及び、自然エネルギを利用して発電する発電装置から供給される発電電圧を、共通の電源供給経路を介して取り込み、内部回路駆動用の直流定電圧を生成する定電圧回路と、この定電圧回路から直流定電圧を受けて動作し、テレビ放送信号を処理して端末側に出力する信号処理回路とを備えた信号処理装置に関する発明である。   In a twelfth aspect of the present invention, a power supply voltage supplied from a power supply device via a television broadcast signal transmission line and a power generation voltage supplied from a power generation device that generates power using natural energy are provided. A constant voltage circuit that takes in through a common power supply path and generates a DC constant voltage for driving an internal circuit, and operates by receiving a DC constant voltage from this constant voltage circuit, processes a TV broadcast signal, and is connected to the terminal side It is invention regarding the signal processing apparatus provided with the signal processing circuit to output to.

そして、この信号処理装置には、電源供給経路の電圧を検出する検出手段、及び、電源供給経路を導通／遮断させるスイッチ手段が設けられており、制御手段が、検出手段にて検出された電圧が電源装置から供給される電源電圧よりも高い第１電圧以上になると、スイッチ手段を介して電源供給経路を遮断させ、検出手段にて検出された電源電圧が、定電圧回路で直流定電圧を生成するのに必要な電圧範囲内で前記電源装置から供給される電源電圧よりも低い第２電圧以下になると、スイッチ手段を介して電源供給経路を導通させる。   The signal processing device is provided with detection means for detecting the voltage of the power supply path and switch means for conducting / cutting off the power supply path, and the control means detects the voltage detected by the detection means. When the voltage becomes higher than the first voltage higher than the power supply voltage supplied from the power supply device, the power supply path is interrupted via the switch means, and the power supply voltage detected by the detection means becomes a DC constant voltage by the constant voltage circuit. When the voltage is equal to or lower than a second voltage lower than the power supply voltage supplied from the power supply device within a voltage range necessary for generation, the power supply path is made conductive through the switch means.

従って、この信号処理装置を使用すれば本発明のテレビ放送伝送システムを構築できることになり、上述した効果を得ることができる。
また、請求項１３に記載の信号処理装置においては、制御手段に、第１電圧及び第２電圧の少なくとも一方を外部から設定するための電圧設定手段が設けられている。このため、請求項１３に記載の信号処理装置によれば、請求項６と同様の効果を得ることができる。 Therefore, if this signal processing apparatus is used, the television broadcast transmission system of the present invention can be constructed, and the above-described effects can be obtained.
In the signal processing device according to the thirteenth aspect, the control means is provided with voltage setting means for setting at least one of the first voltage and the second voltage from the outside. For this reason, according to the signal processing apparatus of Claim 13, the effect similar to Claim 6 can be acquired.

以下に本発明の実施形態を図面と共に説明する。
図１は本発明が適用されたテレビ放送信号伝送システムの構成を表すブロック図である。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of a television broadcast signal transmission system to which the present invention is applied.

図１に示すように、本実施形態のテレビ放送信号伝送システムは、受信アンテナ２にて受信されたテレビ放送信号（以下、受信信号ともいう）を増幅して、伝送線である同軸ケーブル５に出力することで、増幅後の受信信号を端末側に伝送させる増幅装置（以下、ブースタという）４と、同軸ケーブル５の端末側に設置され、同軸ケーブル５を介して伝送されてきた受信信号を末端のテレビ受信機等に出力すると共に、商用電源から電源供給を受けて、ブースタ４駆動用の電源電圧（例えば、直流１５Ｖ）を生成し、同軸ケーブル５を介してブースタ４に供給する電源装置６と、から構成されている。   As shown in FIG. 1, the television broadcast signal transmission system of the present embodiment amplifies a television broadcast signal (hereinafter also referred to as a received signal) received by a receiving antenna 2 and transmits it to a coaxial cable 5 that is a transmission line. By outputting the amplified signal (hereinafter referred to as a booster) 4 for transmitting the amplified received signal to the terminal side, the received signal transmitted via the coaxial cable 5 is installed on the terminal side of the coaxial cable 5. A power supply apparatus that outputs to a terminal television receiver or the like, receives power supply from a commercial power supply, generates a power supply voltage (for example, DC 15 V) for driving the booster 4, and supplies the booster 4 via the coaxial cable 5 6.

また、ブースタ４には、太陽光発電パネル（以下単に発電パネルという）８が設けられており、ブースタ４は、この発電パネル８からの発電電圧と、電源装置６からの電源電圧とを受けて動作する。   The booster 4 is provided with a photovoltaic power generation panel (hereinafter simply referred to as a power generation panel) 8. The booster 4 receives the power generation voltage from the power generation panel 8 and the power supply voltage from the power supply device 6. Operate.

つまり、ブースタ４には、受信アンテナ２から入力される受信信号を増幅する増幅回路１０と、発電パネル８及び電源装置６からの供給電圧を受けて、増幅回路１０を安定動作させるための直流定電圧（例えば直流９Ｖ）を生成し、増幅回路１０に供給する定電圧回路１４と、増幅回路１０から端末側への受信信号の伝送経路上に設けられ、増幅回路１０にて増幅された受信信号を端末側の同軸ケーブル５に送出すると共に、電源装置６から同軸ケーブル５を介して伝送されてきた電源電圧を分離して、定電圧回路１４に供給する電源分離フィルタ１２と、発電パネル８からの出力（発電電力）を、電源分離フィルタ１２から定電圧回路１４への電源供給経路に印加する逆流防止用のダイオード１６と、が設けられている。   That is, the booster 4 receives the supply voltage from the amplifier circuit 10 that amplifies the received signal input from the receiving antenna 2 and the power generation panel 8 and the power supply device 6, and the DC constant for stably operating the amplifier circuit 10. A constant voltage circuit 14 that generates a voltage (for example, DC 9V) and supplies the voltage to the amplifier circuit 10, and a reception signal that is provided on the transmission path of the reception signal from the amplifier circuit 10 to the terminal side and amplified by the amplifier circuit 10 From the power supply device 6 to the constant voltage circuit 14 by separating the power supply voltage transmitted from the power supply device 6 via the coaxial cable 5 and supplying the constant voltage circuit 14 to the constant voltage circuit 14. And a backflow preventing diode 16 for applying the output (generated power) to the power supply path from the power supply separation filter 12 to the constant voltage circuit 14.

このため、定電圧回路１４は、発電パネル８からの発電電圧（電力）と電源装置６からの電源電圧を受けて、増幅回路１０を定電圧駆動するための直流定電圧を生成し、増幅回路１０はその生成された直流定電圧を受けて、受信信号を増幅することになる。   For this reason, the constant voltage circuit 14 receives the power generation voltage (electric power) from the power generation panel 8 and the power supply voltage from the power supply device 6 and generates a DC constant voltage for driving the amplifier circuit 10 at a constant voltage. 10 receives the generated DC constant voltage and amplifies the received signal.

なお、電源分離フィルタ１２は、受信信号を通過させ、直流信号成分を遮断するためのコンデンサＣと、受信信号を遮断し、直流信号成分を通過させるためのコイルＬとから構成されている。   The power supply separation filter 12 includes a capacitor C for passing a received signal and blocking a DC signal component, and a coil L for blocking the received signal and allowing a DC signal component to pass.

また、ブースタ４において、端末側の同軸ケーブル５に受信信号を出力する伝送経路には、この経路の電圧値（直流）の上限を、後述する断線判定用の上限電圧Ｖｍａｘ以下（より好ましくは上限電圧Ｖｍａｘよりもやや低い電圧値以下）に制限するためのツェナーダイオード１８が設けられている。   Further, in the booster 4, the upper limit of the voltage value (direct current) of this path is lower than or equal to the upper limit voltage Vmax for disconnection determination described later (more preferably the upper limit) for the transmission path that outputs the received signal to the coaxial cable 5 on the terminal side. A Zener diode 18 is provided for limiting to a voltage value slightly lower than the voltage Vmax.

次に、電源装置６には、この電源分離フィルタ１２と同様、コンデンサＣとコイルＬとから構成された電源重畳フィルタ２５が設けられており、同軸ケーブル５を介してブースタ４側から伝送されてきた受信信号は、電源重畳フィルタ２５内のコンデンサＣを介して、テレビ受信機等が接続される端末側に出力される。   Next, similarly to the power supply separation filter 12, the power supply device 6 is provided with a power supply superimposing filter 25 composed of a capacitor C and a coil L, and transmitted from the booster 4 side via the coaxial cable 5. The received signal is output via a capacitor C in the power supply superimposing filter 25 to the terminal side to which a television receiver or the like is connected.

また、電源装置６には、商用電源から入力される交流電圧を、上述したブースタ４駆動用の電源電圧（例えば、直流１５Ｖ）に変換する電源回路２０が設けられており、この電源回路２０にて生成された電源電圧は、電源重畳フィルタ２５内のコイルＬを介して、同軸ケーブル５に送出される。   In addition, the power supply device 6 is provided with a power supply circuit 20 that converts an AC voltage input from a commercial power supply into a power supply voltage for driving the booster 4 (for example, DC 15 V). The generated power supply voltage is sent to the coaxial cable 5 via the coil L in the power supply superimposing filter 25.

また、電源回路２０から同軸ケーブル５への電源供給経路上には、電源回路２０側から順に、この経路を導通／遮断するスイッチング用のトランジスタ２２と、この経路を流れる電流を検出するための抵抗２３と、逆流防止用のダイオード２４が設けられている。   Further, on the power supply path from the power circuit 20 to the coaxial cable 5, a switching transistor 22 for conducting / blocking this path in order from the power circuit 20 side, and a resistor for detecting a current flowing through this path 23 and a diode 24 for backflow prevention are provided.

そして、ダイオード２４の両端は、電圧検出回路２６に接続され、抵抗２３の両端は、電流検出回路２８に接続されている。
電圧検出回路２６は、ダイオード２４のカソードと電源重畳フィルタ２５との接続点の電圧Ｖ１、及び、ダイオード２４のアノードと抵抗２３との接続点の電圧Ｖ２をそれぞれ検出するためのものであり、これら各電圧Ｖ１、Ｖ２の検出結果は、表示制御回路３２に出力されると共に、電圧Ｖ１の検出結果は、出力制御回路３０に出力される。 Both ends of the diode 24 are connected to the voltage detection circuit 26, and both ends of the resistor 23 are connected to the current detection circuit 28.
The voltage detection circuit 26 detects the voltage V1 at the connection point between the cathode of the diode 24 and the power supply superimposing filter 25 and the voltage V2 at the connection point between the anode of the diode 24 and the resistor 23. The detection results of the voltages V1 and V2 are output to the display control circuit 32, and the detection result of the voltage V1 is output to the output control circuit 30.

また、電流検出回路２８は、抵抗２３の両端電圧に基づき、当該電源装置６から同軸ケーブル５に送出される負荷電流Ｉを検出するためのものであり、その検出結果は、表示制御回路３２に出力される。   The current detection circuit 28 is for detecting the load current I sent from the power supply device 6 to the coaxial cable 5 based on the voltage across the resistor 23. The detection result is sent to the display control circuit 32. Is output.

出力制御回路３０は、電圧検出回路２６にて検出された同軸ケーブル５側の電源電圧Ｖ１が、電源回路２０が生成する電源電圧よりも高い第１電圧（例えば、１５．１Ｖ）以上になると、トランジスタ２２をオフして、電源回路２０からブースタ４への電源供給を停止させ、電源電圧Ｖ１が、ブースタを正常動作させるのに必要な電圧範囲内（詳しくは定電圧回路１４の許容電圧範囲内）で電源回路２０が生成する電源電圧よりも低い第２電圧（例えば、定電圧回路１４の下限動作電圧である１３．５Ｖ）の以下になると、トランジスタ２２をオンして、電源回路２０からブースタ４への電源供給を開始させる。   When the power supply voltage V1 on the coaxial cable 5 side detected by the voltage detection circuit 26 is equal to or higher than the first voltage (for example, 15.1 V) higher than the power supply voltage generated by the power supply circuit 20, the output control circuit 30 The transistor 22 is turned off to stop the power supply from the power supply circuit 20 to the booster 4 so that the power supply voltage V1 is within the voltage range necessary for normal operation of the booster (specifically, within the allowable voltage range of the constant voltage circuit 14). ), The transistor 22 is turned on when the second voltage lower than the power supply voltage generated by the power supply circuit 20 (for example, 13.5 V, which is the lower limit operating voltage of the constant voltage circuit 14) is reached. Power supply to 4 is started.

つまり、出力制御回路３０は、所謂ヒステリシス付きのコンパレータにて構成されており、電源電圧Ｖ１が電源回路２０にて生成される電源電圧よりも高くなると、発電パネル８単体でブースタ４を正常動作させることができると判断して、トランジスタ２２をオフすることで、電源回路２０からブースタ４への電源供給を停止し、その後、電源電圧Ｖ１が、ブースタ４を正常動作させるのに必要な下限電圧まで低下すると、トランジスタ２２をオンして、電源回路２０からブースタ４への電源供給を開始させる。   That is, the output control circuit 30 is configured by a so-called hysteresis-equipped comparator. When the power supply voltage V1 becomes higher than the power supply voltage generated by the power supply circuit 20, the power generation panel 8 alone operates the booster 4 normally. When it is determined that the power supply circuit 20 is turned off, the power supply from the power supply circuit 20 to the booster 4 is stopped, and then the power supply voltage V1 reaches the lower limit voltage necessary for the booster 4 to operate normally. When the voltage drops, the transistor 22 is turned on, and power supply from the power supply circuit 20 to the booster 4 is started.

また、出力制御回路３０には、トランジスタ２２のオフ時に、電源回路２０からブースタ４への電源供給を開始させるか否かを判定するのに用いられる第２電圧（定電圧回路１４の下限動作電圧）を外部操作によって設定するための電圧設定部３６が設けられている。   The output control circuit 30 also has a second voltage (lower limit operating voltage of the constant voltage circuit 14) used to determine whether or not to start power supply from the power supply circuit 20 to the booster 4 when the transistor 22 is turned off. ) Is set by an external operation.

次に、表示制御回路３２は、電圧検出回路２６にて検出されたダイオード２４の両端の電圧Ｖ１、Ｖ２と、電流検出回路２８にて検出された負荷電流Ｉと、に基づき、発電パネル８及び電源装置６の動作状態、及び、電源装置６からブースタ４に至る受信信号の伝送系で生じた異常（断線／短絡）を判定して、その判定結果を、表示部３４に設けられた３個の発光ダイオード（ＬＥＤ）を使って報知するためのものであり、図２に示すように動作する。   Next, the display control circuit 32 determines the power generation panel 8 and the voltage based on the voltages V1 and V2 across the diode 24 detected by the voltage detection circuit 26 and the load current I detected by the current detection circuit 28. The operation state of the power supply device 6 and the abnormality (disconnection / short circuit) occurring in the transmission system of the received signal from the power supply device 6 to the booster 4 are determined, and the determination results are displayed on the display unit 34. The light emitting diode (LED) is used for notification and operates as shown in FIG.

すなわち、表示制御回路３２は、まず、ダイオード２４のカソード側（つまり同軸ケーブル５側）の電源電圧Ｖ１が予め設定された断線判定用の上限電圧Ｖｍａｘを超えている場合には、受信信号の伝送系（同軸ケーブル５等）が断線していると判断して、表示部３４に設けられた３個のＬＥＤを赤色で点灯させる。   That is, first, when the power supply voltage V1 on the cathode side (that is, the coaxial cable 5 side) of the diode 24 exceeds the preset upper limit voltage Vmax for disconnection determination, the display control circuit 32 transmits the received signal. It is determined that the system (coaxial cable 5 or the like) is disconnected, and the three LEDs provided on the display unit 34 are lit in red.

また、電源電圧Ｖ１が予め設定された短絡判定用の下限電圧Ｖｍｉｎを下回っている場合には、受信信号の伝送系（同軸ケーブル５等）が短絡していると判断して、表示部３４に設けられた３個のＬＥＤを赤色で点滅させる。   If the power supply voltage V1 is lower than the preset short-circuit determination lower limit voltage Vmin, it is determined that the reception signal transmission system (coaxial cable 5 or the like) is short-circuited, and the display unit 34 The three provided LEDs blink in red.

一方、電源電圧Ｖ１がダイオード２４のアノード側の電圧Ｖ２以上であれば、ブースタ４は発電パネル８からの出力だけで動作していると判断して、表示部３４に設けられた３個のＬＥＤを緑色で点灯させる。   On the other hand, if the power supply voltage V1 is equal to or higher than the voltage V2 on the anode side of the diode 24, it is determined that the booster 4 is operating only with the output from the power generation panel 8, and the three LEDs provided in the display unit 34 are determined. Light up in green.

また、ダイオード２４のカソード側（つまり同軸ケーブル５側）の電源電圧Ｖ１がダイオード２４のアノード側の電圧Ｖ２よりも低い場合には、ブースタ４は発電パネル８からの出力と電源装置６からの電源電圧とで動作していると判断して、電流検出回路２８から負荷電流Ｉを取り込む。   When the power supply voltage V1 on the cathode side (that is, on the coaxial cable 5 side) of the diode 24 is lower than the voltage V2 on the anode side of the diode 24, the booster 4 outputs the power from the power generation panel 8 and the power from the power supply device 6. The load current I is taken in from the current detection circuit 28 by judging that it is operating with voltage.

そして、負荷電流Ｉが第１のしきい値電流（例えば５０ｍＡ）以下であれば、発電パネル８が補助電源として機能し、電源回路２０は稼働率０〜５０％で動作していると判断して、表示部３４に設けられた３個のＬＥＤのうちの２個を、緑色で点灯させる。   If the load current I is equal to or less than a first threshold current (for example, 50 mA), it is determined that the power generation panel 8 functions as an auxiliary power source and the power supply circuit 20 is operating at an operation rate of 0 to 50%. Then, two of the three LEDs provided on the display unit 34 are lit in green.

同様に、負荷電流Ｉが第１のしきい値電流（例えば５０ｍＡ）よりも大きく、且つ、第２のしきい値電流（例えば６００ｍＡ）以下であれば、発電パネル８は補助電源として機能しているものの、電源回路２０は稼働率５０％以上で動作していると判断して、表示部３４に設けられた３個のＬＥＤのうちの１個を、緑色で点灯させる。   Similarly, if the load current I is larger than the first threshold current (for example, 50 mA) and not more than the second threshold current (for example, 600 mA), the power generation panel 8 functions as an auxiliary power source. However, it is determined that the power supply circuit 20 is operating at an operation rate of 50% or more, and one of the three LEDs provided on the display unit 34 is lit in green.

また、負荷電流Ｉが第２のしきい値電流（例えば６００ｍＡ）よりも大きい場合には、過負荷状態であると判断して、表示部３４に設けられた３個のＬＥＤのうちの１個を、黄色で点灯させる。   When the load current I is larger than a second threshold current (for example, 600 mA), it is determined that the load is overloaded, and one of the three LEDs provided on the display unit 34 is displayed. Is lit in yellow.

以上説明したように、本実施形態のテレビ放送信号伝送システムにおいては、電源装置６内に、電圧検出回路２６及び出力制御回路３０が設けられており、電圧検出回路２６にて検出された同軸ケーブル５側の電源電圧Ｖ１が電源回路２０にて生成される電源電圧よりも高くなると、トランジスタ２２をオフすることで電源回路２０からブースタ４への電源供給を停止し、その後、電源電圧Ｖ１が、ブースタ４を正常動作させるのに必要な下限電圧まで低下すると、トランジスタ２２をオンして電源回路２０からブースタ４への電源供給を開始させる。   As described above, in the television broadcast signal transmission system according to this embodiment, the voltage detection circuit 26 and the output control circuit 30 are provided in the power supply device 6, and the coaxial cable detected by the voltage detection circuit 26. When the power supply voltage V1 on the 5th side becomes higher than the power supply voltage generated by the power supply circuit 20, the power supply from the power supply circuit 20 to the booster 4 is stopped by turning off the transistor 22, and then the power supply voltage V1 is When the voltage drops to the lower limit voltage necessary for normal operation of the booster 4, the transistor 22 is turned on to start power supply from the power supply circuit 20 to the booster 4.

このため、本実施形態のテレビ放送信号伝送システムによれば、発電パネル８単体でブースタ４への電源供給を行う頻度を高めることができる。また、発電パネル８は、常時ブースタ４内の定電圧回路１４に発電電圧を出力するよう構成されているので、発電パネル８単体でブースタ４への電源供給を行うことができない場合であっても、発電パネル８を電源装置６に対する補助電源として機能させることができる。   For this reason, according to the television broadcast signal transmission system of the present embodiment, the frequency of supplying power to the booster 4 with the power generation panel 8 alone can be increased. Further, since the power generation panel 8 is configured to always output the generated voltage to the constant voltage circuit 14 in the booster 4, even if the power generation panel 8 alone cannot supply power to the booster 4. The power generation panel 8 can function as an auxiliary power source for the power supply device 6.

よって、本実施形態によれば、発電パネル８からの発電電力を有効に利用して、電源装置６での電力消費量を充分低減することができるようになり、テレビ放送信号伝送システム全体の省エネ化を促進することが可能となる。   Therefore, according to the present embodiment, the power consumption from the power supply device 6 can be sufficiently reduced by effectively using the generated power from the power generation panel 8, and the energy saving of the entire television broadcast signal transmission system can be achieved. Can be promoted.

また、出力制御回路３０には、第２電圧を外部操作によって設定するための電圧設定部３６が設けられているため、電源装置６が電源供給を行うブースタ４等の対象物（信号処理装置）が変更されて、これを動作させるのに必要な下限動作電圧が変化しても、その電圧値に応じて第２電圧を設定できるようになる。このため、出力制御回路３０（延いては電源装置６）の使用範囲を拡大できる。   In addition, since the output control circuit 30 is provided with a voltage setting unit 36 for setting the second voltage by an external operation, an object (signal processing device) such as a booster 4 to which the power supply device 6 supplies power. Even if the lower limit operating voltage required to operate the power supply changes, the second voltage can be set according to the voltage value. For this reason, the use range of the output control circuit 30 (and the power supply device 6) can be expanded.

また、電源装置６には、電圧検出回路２６にて検出されたダイオード２４の両端の電圧Ｖ１、Ｖ２と、電流検出回路２８にて検出された負荷電流Ｉと、に基づき、発電パネル８及び電源装置６の動作状態、及び、電源装置６からブースタ４に至る受信信号の伝送系で生じた異常（断線／短絡）を判定して、その判定結果を、表示部３４に設けられた３個の発光ダイオード（ＬＥＤ）を使って報知する表示制御回路３２が設けられている。   The power supply device 6 includes the power generation panel 8 and the power supply based on the voltages V1 and V2 across the diode 24 detected by the voltage detection circuit 26 and the load current I detected by the current detection circuit 28. The operation state of the device 6 and the abnormality (disconnection / short circuit) that has occurred in the transmission system of the received signal from the power supply device 6 to the booster 4 are determined, and the determination results are displayed on the three display units 34. A display control circuit 32 is provided for reporting using a light emitting diode (LED).

このため、使用者は、表示部３４の３個のＬＥＤの点灯状態から、同軸ケーブル５やブースタ４内で生じた断線／短絡の異常、及び、発電パネル８や電源装置６の動作状態を検知できることになり、使い勝手を向上できる。   For this reason, the user detects the disconnection / short circuit abnormality occurring in the coaxial cable 5 or the booster 4 and the operation state of the power generation panel 8 or the power supply device 6 from the lighting state of the three LEDs of the display unit 34. It will be possible to improve usability.

なお、本実施形態においては、ブースタ４が、本発明の信号処理手段（信号処理装置）に相当し、電源装置６が、本発明の電源手段に相当し、発電パネル８が、本発明の発電手段（発電装置）に相当し、電圧検出回路２６が、本発明の検出手段に相当し、出力制御回路３０が、本発明の制御手段に相当し、トランジスタ２２が、本発明のスイッチ手段に相当し、電圧設定部３６が、本発明の電圧設定手段に相当し、表示制御回路３２及び表示部３４が、本発明の報知手段に相当する。   In this embodiment, the booster 4 corresponds to the signal processing means (signal processing apparatus) of the present invention, the power supply device 6 corresponds to the power supply means of the present invention, and the power generation panel 8 corresponds to the power generation of the present invention. The voltage detection circuit 26 corresponds to the detection means of the present invention, the output control circuit 30 corresponds to the control means of the present invention, and the transistor 22 corresponds to the switch means of the present invention. The voltage setting unit 36 corresponds to the voltage setting unit of the present invention, and the display control circuit 32 and the display unit 34 correspond to the notification unit of the present invention.

以上、本発明の実施形態について説明したが、本発明は上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内にて、種々の態様をとることができる。
例えば、上記実施形態では、発電パネル８は、ブースタ４に直接接続されるものとして説明したが、図３に示すように、発電パネル８からの発電電圧を、逆流防止用のダイオードＤ及びコイルＬを介して、伝送線である同軸ケーブル５に直接印加するよう、これら各部を一つの筐体内に収納した発電装置５０として構成してもよい。 As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, A various aspect can be taken in the range which does not deviate from the summary of this invention.
For example, in the above embodiment, the power generation panel 8 has been described as being directly connected to the booster 4, but as shown in FIG. 3, the generated voltage from the power generation panel 8 is converted into a backflow preventing diode D and a coil L. These components may be configured as a power generation device 50 housed in a single casing so as to be directly applied to the coaxial cable 5 as a transmission line.

そして、このように発電装置５０から同軸ケーブル５に発電電圧を直接印加するようにした場合には、図３に示すように、受信アンテナ２から端末側までの伝送経路（同軸ケーブル５）上に設けられた複数の信号処理装置（図では増幅装置４０及び分岐増幅装置４２、４４）に対し、この発電装置５０と端末側の電源装置６とから電源電圧を供給するようにすることもできる。   When the power generation voltage is directly applied to the coaxial cable 5 from the power generation device 50 in this way, as shown in FIG. 3, the transmission path (coaxial cable 5) from the receiving antenna 2 to the terminal side is used. A power supply voltage may be supplied from the power generation device 50 and the power supply device 6 on the terminal side to a plurality of signal processing devices (amplification device 40 and branch amplification devices 42 and 44 in the figure).

また、上記実施形態では、検出手段としての電圧検出回路２６、制御手段としての出力制御回路３０、及び、スイッチ手段としてのトランジスタ２２は、電源装置６に設けるものとして説明したが、図４に示すように、これら各部は、ブースタ４内に設けるようにしてもよい。   In the above-described embodiment, the voltage detection circuit 26 as the detection unit, the output control circuit 30 as the control unit, and the transistor 22 as the switch unit are described as being provided in the power supply device 6. As described above, these units may be provided in the booster 4.

すなわち、図４に示すブースタ４には、電源分離フィルタ１２から定電圧回路１４に至る電源供給経路にトランジスタ５２が設けられており、このトランジスタ５２から定電圧回路１４に至る電源供給経路の電源電圧を、電圧検出回路５４が検出し、制御回路５６が、その検出電圧に基づき、トランジスタ５２をオン／オフさせるように構成されている。   That is, the booster 4 shown in FIG. 4 is provided with a transistor 52 in the power supply path from the power supply separation filter 12 to the constant voltage circuit 14, and the power supply voltage in the power supply path from the transistor 52 to the constant voltage circuit 14. Is detected by the voltage detection circuit 54, and the control circuit 56 is configured to turn on / off the transistor 52 based on the detected voltage.

そして、この場合、制御回路５６を、上記実施形態の出力制御回路３０と同様に、電圧検出回路５４にて検出された電源電圧が電源装置６から供給される電源電圧よりも高くなると、トランジスタ５２をオフし、電圧検出回路５４にて検出された電源電圧が、ブースタ４を正常動作させるのに必要な下限電圧まで低下すると、トランジスタ５２をオンするように構成すれば、上記実施形態と同様の効果を得ることができる。   In this case, when the power supply voltage detected by the voltage detection circuit 54 becomes higher than the power supply voltage supplied from the power supply device 6, the transistor 52 is changed to the transistor 52. When the power supply voltage detected by the voltage detection circuit 54 is lowered to the lower limit voltage necessary for normal operation of the booster 4, the transistor 52 is turned on. An effect can be obtained.

また、図４に示すブースタ４において、制御回路５６には、上記実施形態と同様、定電圧回路１４の下限動作電圧である第２電圧を外部操作によって設定するための電圧設定部を設けてもよい。またこの場合、電圧設定部は、必ずしも第２電圧を設定できるようにする必要はなく、電源装置６から供給される電源電圧よりも高い第１電圧を設定できるようにしてもよく、或いは、第１電圧と第２電圧との両方を設定できるようにしてもよい。   Moreover, in the booster 4 shown in FIG. 4, the control circuit 56 may be provided with a voltage setting unit for setting the second voltage, which is the lower limit operating voltage of the constant voltage circuit 14, by an external operation, as in the above embodiment. Good. In this case, the voltage setting unit does not necessarily need to be able to set the second voltage, but may be able to set the first voltage higher than the power supply voltage supplied from the power supply device 6, You may enable it to set both 1 voltage and 2nd voltage.

また、上記実施形態及びその変形例の説明では、電源装置６と発電パネル８とで電源供給する信号処理装置は、受信信号を増幅するブースタ４や増幅装置４０及び分岐増幅装置４２であるとして説明したが、本発明は、例えば、信号処理装置（信号処理手段）が、衛星放送受信用のコンバータであっても、或いは、受信信号を光信号に変換して伝送するための光送信機や光受信器であっても、上記実施形態と同様に適用することができる。   In the description of the embodiment and the modification thereof, the signal processing device that supplies power by the power supply device 6 and the power generation panel 8 is described as the booster 4 that amplifies the received signal, the amplification device 40, and the branch amplification device 42. However, the present invention can be applied to, for example, a signal processing device (signal processing means) that is a converter for receiving satellite broadcasts, or an optical transmitter or optical device for converting a received signal into an optical signal for transmission. Even a receiver can be applied similarly to the above embodiment.

また次に、上記実施形態では、出力制御回路３０は、電源回路２０からの電源供給経路に設けられたトランジスタ２２をオン／オフさせるものとして説明したが、出力制御回路３０から直接電源回路２０の動作状態を制御（動作／停止）するようにしてもよい。   In the above embodiment, the output control circuit 30 has been described as turning on / off the transistor 22 provided in the power supply path from the power supply circuit 20, but the output control circuit 30 directly controls the power supply circuit 20. The operation state may be controlled (operation / stop).

また更に、上記実施形態では、発電手段として、太陽光を受けて発電する太陽光発電パネル８を用いるものとして説明したが、発電手段としては、風力発電機、地熱発電機等を使用してもよく、これらを併用するようにしてもよい。   In the above embodiment, the solar power generation panel 8 that receives sunlight to generate power is used as the power generation means. However, a wind power generator, a geothermal power generator, or the like may be used as the power generation means. Well, you may make it use these together.

実施形態のテレビ放送信号伝送システムの構成を表すブロック図である。It is a block diagram showing the structure of the television broadcast signal transmission system of embodiment. 表示制御回路の判定動作及び表示部への判定結果の表示例を表す説明図である。It is explanatory drawing showing the example of a display of the determination operation of a display control circuit, and the determination result to a display part. テレビ放送伝送システムの他の構成例を表すブロック図である。It is a block diagram showing the other structural example of a television broadcast transmission system. ブースタの他の構成例を表すブロック図である。It is a block diagram showing the other structural example of a booster.

符号の説明Explanation of symbols

２…受信アンテナ、４…ブースタ、５…同軸ケーブル、６…電源装置、８…太陽光発電パネル、１０…増幅回路、１２…電源分離フィルタ、１４…定電圧回路、１６，２４，Ｄ…ダイオード、１８…ツェナーダイオード、２０…電源回路、２２，５２…トランジスタ、２３…抵抗、２５…電源重畳フィルタ、２６，５４…電圧検出回路、２８…電流検出回路、３０…出力制御回路、３２…表示制御回路、３４…表示部、３６…下限電圧設定部、４０…増幅装置、４２，４４…分岐増幅装置、５０…発電装置、５６…制御回路、Ｃ…コンデンサ、Ｌ…コイル。   DESCRIPTION OF SYMBOLS 2 ... Reception antenna, 4 ... Booster, 5 ... Coaxial cable, 6 ... Power supply device, 8 ... Solar power generation panel, 10 ... Amplifier circuit, 12 ... Power supply separation filter, 14 ... Constant voltage circuit, 16, 24, D ... Diode , 18 ... Zener diode, 20 ... power supply circuit, 22, 52 ... transistor, 23 ... resistor, 25 ... power supply superposition filter, 26, 54 ... voltage detection circuit, 28 ... current detection circuit, 30 ... output control circuit, 32 ... display Control circuit 34... Display unit 36. Lower limit voltage setting unit 40... Amplifier device 42 and 44. Branch amplifier device 50.

Claims (13)

テレビ放送信号を処理して端末側に出力する信号処理手段と、
商用電源から電源供給を受けて前記信号処理手段を動作させるのに要する電源電圧を生成し、前記信号処理装置に供給する電源手段と、
自然エネルギを利用して発電し、発電電圧を前記電源手段から前記信号処理手段への電源供給経路に出力する発電手段と、
を備えたテレビ放送信号伝送システムであって、
前記電源供給経路を介して前記信号処理手段に供給される電源電圧を検出する検出手段と、
該検出手段にて検出された電源電圧が、前記電源手段からの電源電圧よりも高い第１電圧以上になると、前記電源手段から前記信号処理手段への電源供給を停止させ、前記検出手段にて検出された電源電圧が、前記信号処理手段を動作させるのに必要な電圧範囲内で前記電源手段からの電源電圧よりも低い第２電圧以下になると、前記電源手段から前記信号処理手段への電源供給を開始させる制御手段と、
を備えたことを特徴とするテレビ放送信号伝送システム。 Signal processing means for processing a television broadcast signal and outputting it to the terminal side;
A power supply means for receiving a power supply from a commercial power supply and generating a power supply voltage required to operate the signal processing means, and supplying the power supply voltage to the signal processing device;
Power generation means that generates power using natural energy, and outputs a generated voltage to a power supply path from the power supply means to the signal processing means;
A television broadcast signal transmission system comprising:
Detecting means for detecting a power supply voltage supplied to the signal processing means via the power supply path;
When the power supply voltage detected by the detection means becomes equal to or higher than the first voltage higher than the power supply voltage from the power supply means, the power supply from the power supply means to the signal processing means is stopped, and the detection means When the detected power supply voltage becomes equal to or lower than a second voltage lower than the power supply voltage from the power supply means within a voltage range necessary for operating the signal processing means, the power supply from the power supply means to the signal processing means Control means for starting the supply;
A television broadcast signal transmission system comprising: 前記信号処理手段及び前記電源手段は別体に構成され、
前記電源手段は、生成した電源電圧を、前記テレビ放送信号を伝送する伝送線を介して、前記信号処理手段に供給し、
前記検出手段及び前記制御手段は、前記電源手段又は前記信号処理手段に設けられていることを特徴とする請求項１に記載のテレビ放送信号伝送システム。 The signal processing means and the power supply means are configured separately,
The power supply means supplies the generated power supply voltage to the signal processing means via a transmission line for transmitting the television broadcast signal,
The television broadcast signal transmission system according to claim 1, wherein the detection unit and the control unit are provided in the power supply unit or the signal processing unit. 前記伝送線には、前記信号処理手段が複数分散して配置されており、
前記発電手段は、前記伝送線を介して複数の信号処理手段に発電電圧を供給することを特徴とする請求項２に記載のテレビ放送信号伝送システム。 A plurality of the signal processing means are distributed and arranged on the transmission line,
The television broadcast signal transmission system according to claim 2, wherein the power generation means supplies a power generation voltage to a plurality of signal processing means via the transmission line. 前記制御手段は、前記電源供給経路と前記発電手段との接続点よりも電源手段側の電源供給経路上に設けられたスイッチ手段を備え、該スイッチ手段を介して当該電源供給経路の導通／遮断状態を切り換えることにより、前記電源手段から前記信号処理手段への電源供給状態を切り換えることを特徴とする請求項１〜請求項３の何れかに記載のテレビ放送信号伝送システム。   The control means includes switch means provided on a power supply path closer to the power supply means than a connection point between the power supply path and the power generation means, and the power supply path is turned on / off via the switch means. 4. The television broadcast signal transmission system according to claim 1, wherein a power supply state from the power supply unit to the signal processing unit is switched by switching a state. 前記検出手段及び前記制御手段は、前記電源手段に設けられ、
前記制御手段は、前記電源手段による電源電圧生成動作の実行／停止を切り換えることにより、前記電源手段から前記信号処理手段への電源供給状態を切り換えることを特徴とする請求項２又は請求項３に記載のテレビ放送信号伝送システム。 The detection means and the control means are provided in the power supply means,
4. The control unit according to claim 2, wherein the control unit switches a power supply state from the power unit to the signal processing unit by switching execution / stop of a power source voltage generation operation by the power unit. The television broadcast signal transmission system described. 前記制御手段は、前記第１電圧及び前記第２電圧の少なくとも一方を外部から設定するための電圧設定手段を備えたことを特徴とする請求項１〜請求項５の何れかに記載のテレビ放送信号伝送システム。   6. The television broadcast according to claim 1, wherein the control means includes voltage setting means for setting at least one of the first voltage and the second voltage from the outside. Signal transmission system. テレビ放送信号を処理して端末側に出力する信号処理装置と、自然エネルギを利用して発電し、発電電圧を前記信号処理装置に供給する発電装置とを備えたテレビ放送信号伝送システムにおいて、
商用電源から電源供給を受けて前記信号処理装置を動作させるのに要する電源電圧を生成し、その生成した電源電圧を、前記テレビ放送信号を伝送する伝送線を介して前記信号処理装置に供給する電源装置であって、
前記伝送線側の電源電圧を検出する検出手段と、
該検出手段にて検出された電源電圧が、当該電源装置が生成する電源電圧よりも高い第１電圧以上になると、当該電源装置から前記信号処理装置への電源供給を停止させ、前記検出手段にて検出された電源電圧が、前記信号処理装置を動作させるのに必要な電圧範囲内で当該電源装置が生成する電源電圧よりも低い第２電圧以下になると、当該電源装置から前記信号処理装置への電源供給を開始させる制御手段と、
を備えたことを特徴とする電源装置。 In a television broadcast signal transmission system comprising a signal processing device that processes a television broadcast signal and outputs it to the terminal side, and a power generation device that generates power using natural energy and supplies the generated voltage to the signal processing device
A power supply voltage required to operate the signal processing device upon receiving a power supply from a commercial power supply is generated, and the generated power supply voltage is supplied to the signal processing device via a transmission line for transmitting the television broadcast signal. A power supply unit,
Detecting means for detecting a power supply voltage on the transmission line side;
When the power supply voltage detected by the detection unit becomes equal to or higher than a first voltage higher than the power supply voltage generated by the power supply device, the power supply from the power supply device to the signal processing device is stopped, and the detection device When the detected power supply voltage becomes equal to or lower than a second voltage lower than the power supply voltage generated by the power supply device within a voltage range necessary for operating the signal processing device, the power supply device transmits the signal processing device. Control means for starting the power supply of
A power supply device comprising: 前記制御手段は、当該電源装置から前記伝送線への電源供給経路上に設けられたスイッチ手段を備え、該スイッチ手段を介して、当該電源装置から前記信号処理装置への電源供給状態を切り換えることを特徴とする請求項７に記載の電源装置。   The control means includes switch means provided on a power supply path from the power supply device to the transmission line, and switches the power supply state from the power supply device to the signal processing device via the switch means. The power supply device according to claim 7. 前記制御手段は、当該電源装置による電源電圧生成動作の実行／停止を切り換えることにより、当該電源装置から前記信号処理装置への電源供給状態を切り換えることを特徴とする請求項７に記載の電源装置。   8. The power supply apparatus according to claim 7, wherein the control unit switches a power supply state from the power supply apparatus to the signal processing apparatus by switching execution / stop of a power supply voltage generation operation by the power supply apparatus. . 当該電源装置から前記信号処理装置への電源供給状態を報知する報知手段を備えたことを特徴とする請求項７〜請求項９の何れかに記載の電源装置。   The power supply device according to any one of claims 7 to 9, further comprising a notification unit configured to notify a power supply state from the power supply device to the signal processing device. 前記制御手段は、前記第１電圧及び前記第２電圧の少なくとも一方を外部から設定するための電圧設定手段を備えたことを特徴とする請求項１〜請求項１０の何れかに記載の電源装置。   11. The power supply device according to claim 1, wherein the control means includes voltage setting means for setting at least one of the first voltage and the second voltage from the outside. . 電源装置からテレビ放送信号の伝送線を介して供給される電源電圧、及び、自然エネルギを利用して発電する発電装置から供給される発電電圧を、共通の電源供給経路を介して取り込み、内部回路駆動用の直流定電圧を生成する定電圧回路と、
この定電圧回路から直流定電圧を受けて動作し、前記テレビ放送信号を処理して端末側に出力する信号処理回路と、
を備えた信号処理装置であって、
前記電源供給経路の電圧を検出する検出手段と、
前記電源供給経路を導通／遮断させるスイッチ手段と、
前記検出手段にて検出された電圧が、前記電源装置から供給される電源電圧よりも高い第１電圧以上になると、前記スイッチ手段を介して前記電源供給経路を遮断させ、前記検出手段にて検出された電源電圧が、前記定電圧回路で前記直流定電圧を生成するのに必要な電圧範囲内で前記電源装置から供給される電源電圧よりも低い第２電圧以下になると、前記スイッチ手段を介して前記電源供給経路を導通させる制御手段と、
を備えたことを特徴とする信号処理装置。 A power supply voltage supplied from a power supply device via a television broadcast signal transmission line and a power generation voltage supplied from a power generation device that uses natural energy to generate power are taken in via a common power supply path. A constant voltage circuit for generating a DC constant voltage for driving;
A signal processing circuit that operates by receiving a DC constant voltage from this constant voltage circuit, processes the TV broadcast signal, and outputs it to the terminal side;
A signal processing apparatus comprising:
Detecting means for detecting a voltage of the power supply path;
Switch means for conducting / interrupting the power supply path;
When the voltage detected by the detection means becomes equal to or higher than a first voltage higher than the power supply voltage supplied from the power supply device, the power supply path is interrupted via the switch means and detected by the detection means. When the supplied power voltage becomes equal to or lower than a second voltage lower than the power voltage supplied from the power supply device within a voltage range necessary for generating the DC constant voltage by the constant voltage circuit, the switching means is used. Control means for conducting the power supply path,
A signal processing apparatus comprising: 前記制御手段は、前記第１電圧及び前記第２電圧の少なくとも一方を外部から設定するための電圧設定手段を備えたことを特徴とする請求項１２に記載の信号処理装置。   13. The signal processing apparatus according to claim 12, wherein the control means includes voltage setting means for setting at least one of the first voltage and the second voltage from the outside.
JP2008164384A 2008-06-24 2008-06-24 Television broadcast signal transmission system, power supply unit and signal processing apparatus Pending JP2010010755A (en)

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