WO2011122674A1 - Power source of television broadcast signal transmitter and television broadcast signal transmitting system - Google Patents
Power source of television broadcast signal transmitter and television broadcast signal transmitting system Download PDFInfo
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- WO2011122674A1 WO2011122674A1 PCT/JP2011/058105 JP2011058105W WO2011122674A1 WO 2011122674 A1 WO2011122674 A1 WO 2011122674A1 JP 2011058105 W JP2011058105 W JP 2011058105W WO 2011122674 A1 WO2011122674 A1 WO 2011122674A1
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- power supply
- television broadcast
- television
- broadcast signal
- power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/214—Specialised server platform, e.g. server located in an airplane, hotel, hospital
- H04N21/2143—Specialised server platform, e.g. server located in an airplane, hotel, hospital located in a single building, e.g. hotel, hospital or museum
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/63—Generation or supply of power specially adapted for television receivers
Definitions
- the present invention relates to a power supply apparatus that supplies power to a television broadcast signal transmission device provided on a transmission line of a television broadcast signal transmission system, and a television broadcast signal transmission system including the power supply apparatus.
- transmission equipment such as an amplifier that amplifies a television broadcast signal and a frequency converter that changes the channel arrangement of the television broadcast signal is usually provided on a transmission line that transmits the television broadcast signal.
- this kind of transmission equipment operates by receiving power supply directly from the power supply unit built in the transmission equipment, or receives power supply from the power supply apparatus connected to the transmission line via the transmission line. To do.
- the power supply device is normally configured to receive a power supply (for example, AC 100V) from a commercial power source and generate a DC voltage (for example, DC 15V) for driving the transmission device.
- a power supply for example, AC 100V
- DC 15V DC 15V
- this type of transmission device is for setting the input level and channel arrangement of TV broadcast signals to TV receivers (TV receivers, TV tuners, recording devices, etc.) connected to a plurality of TV terminals. Therefore, when the television receiver on the terminal side is not receiving a television broadcast signal, there is no problem even if the operation of the transmission device is stopped.
- a power supply device is provided between the TV terminal on the terminal side and the TV receiver and supplies power to the amplifier (booster) on the transmission line, or between the power supply device and the TV receiver.
- the operation state of the television receiver is detected, and when the television receiver is operating, the power supply from the power supply device to the amplifier is executed, and the television receiver stops operating. It has been proposed to provide a power supply control device that stops the power supply from the power supply device to the amplifier (see, for example, Patent Document 1).
- the proposed power supply control device is a power supply device to which a television receiver is connected, or a television receiver that is built in a terminal device between the power supply device and the television receiver and is connected to the power supply device or the terminal device. Since the power supply from the power supply unit to the amplifier is executed / stopped by determining the operation state of, for example, the power supply unit installed on the transmission line away from the television receiver or the transmission device is incorporated. It could not be applied as it is to the power supply device.
- the present inventors can switch the operation of the power supply device installed in a place away from the television receiver or the power supply device built in the transmission device according to the operation state of the television receiver on the terminal side. For this reason, a detection device for detecting the operation state is provided on the television receiver side, and it is considered that a power supply command is transmitted from the detection device to the power supply device when the television reception device is operating.
- the power supply device is operated only when the television receiver is operating by transmitting a power supply command via the transmission line to the power supply device on the transmission line from the detection device on the television receiver side. It is.
- the power supply device extends without affecting the reception of the television broadcast signal at each television receiver.
- Transmission equipment can be kept to a minimum and the power consumption can be reduced.
- each television receiver is provided with a detection device and each detection device detects the operating state of the corresponding television receiver, a plurality of television receivers are connected. If at least one of the television receivers is in an operating state, the power supply device (and thus the transmission device) is operated to transmit a television broadcast signal, and conversely, all the television receivers are stopped. In some cases, it is possible to reduce the power consumption in the television broadcast signal transmission system by stopping the operation of the power supply device (and thus the transmission device).
- the power supply supplied to the transmission device is supplied to the power supply device.
- the power supply circuit that generates the voltage it is necessary to provide a control circuit that detects the power supply instruction and operates the power supply circuit.
- the power consumption in the transmission device that receives power supply from the power supply device can be reduced. Since it is necessary to always operate the control circuit in the power supply device, the amount of power consumed by the power supply device and the transmission device can be reduced to substantially zero when the operation of the television receiver on the terminal side is stopped. In other words, there is a problem that power saving of the television broadcast signal transmission system is hindered.
- An object of the present invention is to reduce power consumption when power supply to a transmission device is unnecessary in a power supply device that supplies power to a transmission device provided on a transmission line of a television broadcast signal transmission system.
- a power supply device for a television broadcast signal transmission device which has been made to achieve the above object, A power supply circuit that receives a power supply from an external power supply and generates a DC power supply voltage necessary for operating a transmission device provided in a transmission line of the television broadcast signal transmission system, and a direct current generated by the power supply circuit
- a power supply device for a television broadcast signal transmission device that supplies a power supply voltage to the transmission device
- a normally open relay switch that is provided in a power supply path between a power plug connected to the external power supply and the power circuit, and that conducts / cuts off the power supply path by energization / non-energization of the relay coil
- Charging means for receiving a power supply from an output path for outputting a DC power supply voltage generated by the power supply circuit and charging a power storage means including at least one of a capacitor and a secondary battery
- a normally-open switching element that is provided on an energization path for passing an electric current to the relay coil with electric power charged
- the television broadcast signal transmission system is A transmission line provided with a transmission device for transmitting a television broadcast signal, and a power supply device that receives power supply from an external power supply to generate a power supply voltage for driving the transmission device and supplies the power supply voltage to the transmission device.
- a television broadcast signal transmission system that transmits television broadcast signals to a plurality of television terminals.
- Each of the television receivers connected to the television terminals determines whether the television receiver is receiving the television broadcast signal, and the television receiver is receiving the television broadcast signal. If so, providing a reception state detection device for outputting a control signal representing a power supply command to the transmission device from the television terminal to the transmission line.
- the power supply apparatus uses the power supply apparatus according to the first aspect of the present invention.
- a normally open relay switch is provided in the power supply path between the power plug and the power circuit, and the relay coil of this relay switch is provided with the relay coil. Is formed with an energization path for flowing current from the storage means charged via the charging means.
- the energization path is provided with a switching element, and the switching element is driven when a control signal representing a power supply command to the transmission equipment is input via the transmission line of the television broadcast signal transmission system. It is turned on by a drive signal generated by the circuit, and is turned off when no control signal is input.
- the relay switch is turned on only when a control signal is input via the transmission line, and the power supply path from the power plug to the power circuit is conducted, and the control signal is input via the transmission line. If not, the power supply path from the power plug to the power circuit is cut off.
- the power supply device of the present invention in a state where no control signal is input via the transmission line, the power supply from the external power supply is cut off, and the power consumption in the power supply circuit or the like is suppressed. Reduction of power consumption of the apparatus (and thus a television broadcast signal transmission system) can be promoted.
- the power source for switching the relay switch from the OFF state to the ON state when a control signal is input via the transmission line is the power stored in the power storage means during the operation of the power supply circuit.
- the relay coil cannot be energized. Conceivable. If the relay coil cannot be energized, a power supply path from the power plug to the power circuit cannot be formed via the relay switch.
- a normally open type operation switch is provided in parallel to the relay switch, and by operating this operation switch, a power supply path from the power plug to the power circuit is formed, A DC power supply voltage is output, and the storage means is charged with the DC power supply voltage.
- the power supply device of the present invention even when the power storage means is discharged, the power storage means is charged by operating the operation switch, and as described above, the operation of the power supply device is performed via the transmission line. It becomes possible to control according to the input control signal.
- a plurality of terminal-side television terminals to which a television broadcast signal is transmitted are provided, and a television receiver connected to the plurality of television terminals is provided. Respectively determines whether the television receiver is receiving a television broadcast signal, and if the television receiver is receiving a television broadcast signal, a control signal indicating a power supply command to the transmission device is provided.
- a reception state detection device for outputting from a television terminal to a transmission line is provided.
- the power supply apparatus for the television broadcast signal transmission apparatus is used as the power supply apparatus that supplies power to the transmission apparatus on the transmission line. For this reason, according to the television signal transmission system of the present invention, all the television receivers connected to each television terminal stop the reception operation, and the power supply command to the transmission equipment is transmitted from all television receivers to the transmission line.
- the power supply device not only stops the power supply to the transmission equipment but also stops all the operations of the internal circuits such as the power supply circuit.
- the amount of power consumed by the transmission device and the power supply device is reduced when all the television receivers on the terminal side stop the reception operation (for example, at midnight).
- the power consumption of the television broadcast signal transmission system can be reduced.
- the television broadcast signal transmission system is for so-called home joint reception.
- a VHF antenna 2 that receives a television broadcast radio wave in the VHF band is used as a television broadcast signal reception antenna.
- a UHF antenna 4 for receiving UHF band television broadcast radio waves, and a satellite reception antenna 6 for receiving satellite broadcast radio waves distributed via broadcast satellites (BS) and communication satellites (CS).
- BS broadcast satellites
- CS communication satellites
- reception signals from the VHF antenna 2 and the UHF antenna 4 are mixed by the mixer 8 and then input to the booster 10, and the reception signal from the satellite reception antenna 6 is also input to the booster 10.
- the booster 10 is for amplifying the reception signals from the VHF antenna 2, the UHF antenna 4, and the satellite reception antenna 6 (in other words, the television broadcast signal of each broadcast channel) to a predetermined level, and is provided on the terminal side.
- the power supply device 50 is configured to operate by receiving a DC power supply voltage (for example, DC15V) transmitted through a transmission line L made of a coaxial cable.
- the received signal amplified by the booster 10 is distributed by the distributor 12 (four distributions in the present embodiment), and is transmitted through the transmission lines L connected to the distribution output terminals of the distributor 12 in the building. Are transmitted to television terminals 14, 16,... Installed in each room.
- the TV terminals 14, 16,... are for distributing received signals to a television receiver 28 (TV receiver, TV tuner, recording device, etc.) installed in each room.
- a television receiver 28 TV receiver, TV tuner, recording device, etc.
- One or more connectors for connecting to the terminals via coaxial cables are provided.
- the detection device 30 is used.
- FIG. 1 only one set of the television receiver 28 and the detection device 30 is shown, but the detection device 30 is provided for each television receiver 28 provided in each room. , 16,... Illustration of the television receiver 28 and the detection device 30 connected to the television terminal 16 and the like is omitted.
- the detection device 30 is provided between the television terminals 14, 16,... And the television receiver 28, and receives a reception signal output from the connector of the television terminals 14, 16,. Input to the input terminal. Further, the detection device 30 takes in a commercial power source (for example, AC 100V) from power outlets 24, 26,... Installed in each room in the building, and supplies the taken commercial power source to the television receiver 28. The operation state of the television receiver 28 is detected from the commercial power supply state, and is configured as shown in FIG.
- a commercial power source for example, AC 100V
- the detection device 30 is connected to the connectors of the television terminals 14, 16,... Via a coaxial cable and receives an input terminal T1 for capturing a received signal (television broadcast signal), and a television terminal via the input terminal T1.
- a transmission path L1 for transmitting the received signal by connecting the terminals T1 and T2, and each room.
- the power outlets 24, 26,... For taking in commercial power (for example, AC 100 V), and a power outlet 34 for supplying commercial power input from the power plug 32 to the television receiver 28.
- a power line D1 that connects between the power plug 32 and the power outlet 34 to form a commercial power supply path. .
- the detection device 30 includes a current detection circuit 40, a comparator 42, a signal generation circuit 44, and a power supply circuit 48.
- the current detection circuit 40 detects the amount of current flowing through the power supply line D1 via the detection unit 38 provided in the power supply line D1.
- the comparator 42 determines whether or not the detected voltage from the current detection circuit 40 is equal to or higher than the threshold voltage Vth, so that the amount of current consumed by the television receiver 28 connected to the power outlet 34 is equal to or higher than a predetermined threshold. It is determined whether or not.
- the signal generator 44 It is determined that a television broadcast signal is being received, a control signal representing a power supply command from the power supply device 50 to the booster 10 is generated, and the television terminals 14, 16,... Output to the transmission line L) of the transmission system.
- the power supply circuit 48 receives a commercial power supply from the power supply line D1, and generates a drive voltage (DC voltage) for each circuit.
- the signal generation circuit 44 generates a signal (for example, a tone signal) in a frequency band extremely lower than that of the reception signal as a control signal, and the generated control signal is passed through a low-pass filter (LPF) 46. It is output to the input terminal T1.
- LPF low-pass filter
- control signal generated by the signal generation circuit 44 has a different frequency for each detection device 30 provided in the television broadcast signal transmission system in order to prevent the power supply device 50 from recognizing the control signal due to interference. Set to belt.
- the signal generation circuit 44 is configured such that the type (frequency band) of the control signal to be generated can be selected from a plurality of ones by an external operation.
- the reception signal input from the input terminal T1 is transmitted to the output terminal T2 side, and the input terminal T1 (in other words, in other words, through the LPF 46).
- a high-pass filter (HPF) 36 is provided for preventing the control signal input to the transmission path L1) from being transmitted to the output terminal T2.
- a control signal is output from the detection device 30 to the television terminals 14, 16,...
- the television receiver 28 connected to the power outlet 34 is receiving a television broadcast signal.
- the control signal output from the detection device 30 is transmitted to the distributor 12 side via the transmission line L wired in the building.
- the distributor 12 has a low frequency between the distribution terminals. A signal path for passing the control signal is formed.
- control signal from the detection device 30 connected to the television terminals 14, 16,... Is transmitted to all the transmission lines L of the television broadcast signal transmission system via the distributor 12, and the power supply device 50 is transmitted to the transmission line L.
- the control signal from each detection device 30 is transmitted to the power supply device 50 no matter where it is located.
- the power supply device 50 is connected to the connector of the television terminal 16 via a coaxial cable.
- the power supply device 50 is input via a power plug 52 that can be connected to commercial power outlets 24, 26,... Installed in each room in the building, and the power plug 52.
- a power supply circuit 54 that generates a DC power supply voltage (for example, DC15V) for driving the booster 10 from a commercial power supply, an output terminal T3 that can be connected to the connector of the TV terminal 16 via a coaxial cable, and the power supply circuit 54.
- a DC pass filter 56 for passing the DC power supply voltage to the output terminal T3, and the DC power supply voltage generated by the power supply circuit 54 is connected to the TV terminal 16 (and extended through the DC pass filter 56 and the output terminal T3). It is configured to output to the transmission line L).
- a relay switch 58 is provided in the power supply path D2 from the power plug 52 to the power circuit 54.
- the relay switch 58 when the relay coil 58a is energized, the contact is turned on to conduct the power supply path D2, and when the energization to the relay coil 58a is interrupted, the contact is turned off. This is a normally closed relay that cuts off the supply path D2.
- relay coil 58a One end of the relay coil 58a is grounded to a ground line via a normally open (so-called normally-off type) transistor 62, and the other end of the relay coil 58a is the other end of the capacitor 60 whose one end is grounded to the ground line. It is connected to the.
- the other end of the capacitor 60 is connected to the cathode of a diode 64.
- the anode of the diode 64 is connected to the output path L2 of the DC power supply voltage from the power supply circuit 54 to the output terminal T3.
- the capacitor 60 is charged by the DC power supply voltage generated by the power supply circuit 54. Electric power determined by the DC power supply voltage is accumulated.
- the power supply circuit 54 When commercial power is supplied to the power supply circuit 54, the power supply circuit 54 generates a DC power supply voltage and outputs it to the output path L2. Therefore, the capacitor 60 is charged via the diode 64, and the relay switch 58 The ON state (and the operation of the power supply circuit 54) is maintained.
- the pass frequency band is set to the frequency band of the control signal, and only the control signal flowing through the transmission line L is selectively selected.
- One end of a control signal passing filter 66 to be passed is connected.
- control signal output from the detection device 30 connected to the TV terminals 14, 16,... Is input to the power supply device 50 through the transmission line L, and is extracted by the control signal pass filter 66 in the power supply device 50. Will be.
- the drive circuit 68 generates a drive signal for turning on the transistor 62 by full-wave rectifying the control signal input via the control signal pass filter 66 and outputs the drive signal to the control terminal of the transistor 62.
- the transistor 62 may be anything as long as it receives a drive signal at its control terminal (gate, base, etc.) and is turned on.
- an n-channel MOSFET or an NPN bipolar transistor can be used. .
- the drive circuit 68 turns on the transistor 62, thereby turning on the relay switch 58. Then, the power supply circuit 54 operates, and the DC power supply voltage is supplied from the power supply device 50 to the booster 10 on the transmission line L.
- the booster 10 not only the booster 10 but also the power supply device 50 has substantially zero power consumption. Therefore, according to the television broadcast signal transmission system of this embodiment, the television connected to the transmission line L When it is not necessary to transmit a television broadcast signal to the receiving device 28, the power consumption in the television broadcast signal transmission system can be minimized and the power consumption can be reduced.
- the power supply device 50 of the present embodiment is further provided with a normally open type operation switch 70 in parallel with the relay switch 58, and if the user operates the operation switch 70 in the ON state, The power supply path D2 from the plug 52 to the power supply circuit 54 is turned on to output a DC power supply voltage from the power supply circuit 54, and the capacitor 60 is charged with the DC power supply voltage.
- the power supply device 50 of this embodiment even if the capacitor 60 is discharged, the capacitor 60 is charged by operating the operation switch 70, and the operation of the power supply device 50 is performed via the transmission line L. It becomes possible to control according to the input control signal.
- the booster 10 corresponds to the transmission device of the present invention
- the diode 64 corresponds to the charging means of the present invention
- the transistor 62 corresponds to the switching element of the present invention.
- the power supply device 50 has been described as being connected to the transmission line L of the television broadcast signal transmission system via the television terminal 16, but the power supply device 50 may be connected to the transmission line L. What is necessary is just to install in the arbitrary positions in the building where a television broadcast signal transmission system is constructed.
- the power supply device 50 is not necessarily configured as a single unit.
- the power supply device 50 may be built in a transmission device (such as the booster 10) to be supplied with power.
- the power supply device 50 is described as operating by receiving power supply from a commercial power supply.
- the power supply device 50 is powered from an external power supply different from a commercial power supply such as an uninterruptible power supply or a battery. The present invention can be applied even if the apparatus operates by being supplied.
- the detection device 30 has been described as taking in commercial power from a power outlet installed in each room in the building and supplying the fetched commercial power to the television receiver 28.
- the detection device 30 may also be configured to receive power from an external power source different from a commercial power source such as an uninterruptible power supply or a battery, and to supply power to the television receiver 28.
- the detection device 30 only needs to be able to detect the operation state of the television receiver 28 from the power supply state to the television receiver 28, and the external power source may be a commercial power source or another power supply source such as an uninterruptible power supply device. Good.
- the capacitor 60 is used as the power storage means.
- a secondary battery may be used instead of the capacitor 60.
- the drive circuit 68 has been described as generating a drive signal for turning on the transistor 62 by full-wave rectifying the control signal.
- the drive circuit 68 power is supplied from the capacitor 60 (or secondary battery), and the drive circuit 68 generates a drive signal based on the power supplied from the capacitor 60 (or secondary battery) when a control signal is input. It may be configured.
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Abstract
The disclosed power source of a television broadcast signal transmitter supplies a DC voltage to a transmitter provided on a transmission line of a television broadcast transmission system, and is provided with: a normally open-type relay switch which allows or blocks conduction in a power supply route between a power plug and a power supply circuit; a charging means which receives power from the power supply circuit and charges an accumulator; a normally open-type switching element which allows or blocks conduction in a conduction route through which current flows to the relay coil by means of the power accumulated in the accumulator; a drive circuit which turns on the switching element when a prescribed control signal is inputted via the transmission line; and an operation switch for allowing conduction in the power supply route by means of external operation.
Description
本国際出願は、２０１０年３月３０日に日本国特許庁に出願された日本国特許出願第２０１０－０７８５４４号に基づく優先権を主張するものであり、日本国特許出願第２０１０－０７８５４４号の全内容を参照により本国際出願に援用する。
This international application claims priority based on Japanese Patent Application No. 2010-0785544 filed with the Japan Patent Office on March 30, 2010, and is based on Japanese Patent Application No. 2010-078544. The entire contents are incorporated herein by reference.
本発明は、テレビ放送信号伝送システムの伝送線に設けられたテレビ放送信号伝送機器に対し電源供給を行う電源装置、及び、この電源装置を備えたテレビ放送信号伝送システムに関する。
The present invention relates to a power supply apparatus that supplies power to a television broadcast signal transmission device provided on a transmission line of a television broadcast signal transmission system, and a television broadcast signal transmission system including the power supply apparatus.
テレビ放送信号伝送システムにおいては、通常、テレビ放送信号を伝送する伝送線上に、テレビ放送信号を増幅する増幅器や、テレビ放送信号のチャンネル配列を変更する周波数変換器等の伝送機器が設けられている。
In a television broadcast signal transmission system, transmission equipment such as an amplifier that amplifies a television broadcast signal and a frequency converter that changes the channel arrangement of the television broadcast signal is usually provided on a transmission line that transmits the television broadcast signal. .
そして、この種の伝送機器は、伝送機器に内蔵された電源装置から直接電源供給を受けて動作するか、或いは、伝送線に接続された電源装置から伝送線を介して電源供給を受けて動作する。
And this kind of transmission equipment operates by receiving power supply directly from the power supply unit built in the transmission equipment, or receives power supply from the power supply apparatus connected to the transmission line via the transmission line. To do.
なお、電源装置は、通常、商用電源から電源供給（例えば、ＡＣ１００Ｖ）を受けて、伝送機器駆動用の直流電圧（例えば、ＤＣ１５Ｖ）を生成するように構成されている。
ところで、この種の伝送機器は、複数のテレビ端子にそれぞれ接続されるテレビ受信装置（テレビ受像器、テレビチューナ、録画装置等）へのテレビ放送信号の入力レベルやチャンネル配列を設定するためのものであることから、端末側のテレビ受信装置がテレビ放送信号を受信していないときには、伝送機器の動作を停止させても問題はない。 In addition, the power supply device is normally configured to receive a power supply (for example, AC 100V) from a commercial power source and generate a DC voltage (for example, DC 15V) for driving the transmission device.
By the way, this type of transmission device is for setting the input level and channel arrangement of TV broadcast signals to TV receivers (TV receivers, TV tuners, recording devices, etc.) connected to a plurality of TV terminals. Therefore, when the television receiver on the terminal side is not receiving a television broadcast signal, there is no problem even if the operation of the transmission device is stopped.
ところで、この種の伝送機器は、複数のテレビ端子にそれぞれ接続されるテレビ受信装置（テレビ受像器、テレビチューナ、録画装置等）へのテレビ放送信号の入力レベルやチャンネル配列を設定するためのものであることから、端末側のテレビ受信装置がテレビ放送信号を受信していないときには、伝送機器の動作を停止させても問題はない。 In addition, the power supply device is normally configured to receive a power supply (for example, AC 100V) from a commercial power source and generate a DC voltage (for example, DC 15V) for driving the transmission device.
By the way, this type of transmission device is for setting the input level and channel arrangement of TV broadcast signals to TV receivers (TV receivers, TV tuners, recording devices, etc.) connected to a plurality of TV terminals. Therefore, when the television receiver on the terminal side is not receiving a television broadcast signal, there is no problem even if the operation of the transmission device is stopped.
そこで、従来では、端末側のテレビ端子とテレビ受信装置との間に設けられて伝送線上の増幅器（ブースタ）に電源供給を行う電源装置内、若しくは、この電源装置とテレビ受信装置との間に設けられる端末機器内に、テレビ受信装置の動作状態を検出して、テレビ受信装置が動作しているときに、電源装置から増幅器への電源供給を実行させ、テレビ受信装置が動作を停止しているときには、電源装置から増幅器への電源供給を停止させる電源制御装置を設けることが提案されている（例えば、特許文献１等参照）。
Therefore, conventionally, a power supply device is provided between the TV terminal on the terminal side and the TV receiver and supplies power to the amplifier (booster) on the transmission line, or between the power supply device and the TV receiver. In the terminal device provided, the operation state of the television receiver is detected, and when the television receiver is operating, the power supply from the power supply device to the amplifier is executed, and the television receiver stops operating. It has been proposed to provide a power supply control device that stops the power supply from the power supply device to the amplifier (see, for example, Patent Document 1).
そして、この提案の電源制御装置によれば、テレビ受信装置が動作を停止しているときに、電源装置から増幅器への電源供給を停止させるので、増幅器における電力消費量を抑えて、テレビ放送信号伝送システムの消費電力の低減を図ることができる。
According to this proposed power supply control device, when the television receiver is stopped, the power supply from the power supply device to the amplifier is stopped. The power consumption of the transmission system can be reduced.
ところで、上記提案の電源制御装置は、テレビ受信装置が接続される電源装置、若しくは、電源装置とテレビ受信装置との間の端末機器に内蔵され、電源装置若しくは端末機器に接続されるテレビ受信装置の動作状態を判定することにより、電源装置から増幅器への電源供給を実行・停止させるものであるので、例えば、テレビ受信装置から離れた伝送線上に設置された電源装置や、伝送機器に内蔵された電源装置に対しそのまま適用することができなかった。
By the way, the proposed power supply control device is a power supply device to which a television receiver is connected, or a television receiver that is built in a terminal device between the power supply device and the television receiver and is connected to the power supply device or the terminal device. Since the power supply from the power supply unit to the amplifier is executed / stopped by determining the operation state of, for example, the power supply unit installed on the transmission line away from the television receiver or the transmission device is incorporated. It could not be applied as it is to the power supply device.
そこで、本発明者らは、端末側のテレビ受信装置の動作状態に応じて、テレビ受信装置から離れた場所に設置された電源装置や伝送機器に内蔵された電源装置の動作を切り換えることができるようにするため、テレビ受信装置側にその動作状態を検出する検出装置を設け、テレビ受信装置が動作しているときに検出装置から電源装置に電源供給指令を送信することを考えた。
Therefore, the present inventors can switch the operation of the power supply device installed in a place away from the television receiver or the power supply device built in the transmission device according to the operation state of the television receiver on the terminal side. For this reason, a detection device for detecting the operation state is provided on the television receiver side, and it is considered that a power supply command is transmitted from the detection device to the power supply device when the television reception device is operating.
つまり、テレビ受信装置側の検出装置から伝送線上の電源装置に対し伝送線を介して電源供給指令を送信することで、テレビ受信装置が動作しているときにだけ電源装置を動作させるようにするのである。
In other words, the power supply device is operated only when the television receiver is operating by transmitting a power supply command via the transmission line to the power supply device on the transmission line from the detection device on the television receiver side. It is.
そして、このようにすれば、伝送線に複数のテレビ受信装置が接続されたテレビ放送信号伝送システムにおいて、各テレビ受信装置でのテレビ放送信号の受信に影響を与えることなく、電源装置（延いては伝送機器）の動作を必要最小限に抑え、消費電力の低減を図ることができるようになる。
Then, in this way, in the television broadcast signal transmission system in which a plurality of television receivers are connected to the transmission line, the power supply device (extends) without affecting the reception of the television broadcast signal at each television receiver. (Transmission equipment) can be kept to a minimum and the power consumption can be reduced.
つまり、伝送線に複数のテレビ受信装置が接続されていても、各テレビ受信装置に検出装置を設けて、各検出装置が対応するテレビ受信装置の動作状態を検出するようにすれば、複数のテレビ受信装置のうちの一つでも動作状態にあれば、電源装置（延いては伝送機器）を動作させてテレビ放送信号を伝送させ、逆に、全てのテレビ受信装置が動作停止状態になったときには、電源装置（延いては伝送機器）の動作を停止させて、テレビ放送信号伝送システムでの消費電力を低減することができるようになる。
That is, even if a plurality of television receivers are connected to the transmission line, if each television receiver is provided with a detection device and each detection device detects the operating state of the corresponding television receiver, a plurality of television receivers are connected. If at least one of the television receivers is in an operating state, the power supply device (and thus the transmission device) is operated to transmit a television broadcast signal, and conversely, all the television receivers are stopped. In some cases, it is possible to reduce the power consumption in the television broadcast signal transmission system by stopping the operation of the power supply device (and thus the transmission device).
しかしながら、電源装置を、検出装置から伝送線を介して伝送されてくる電源供給指令を受けて伝送機器への電源供給を開始するように構成するには、電源装置に、伝送機器に供給する電源電圧を生成する電源回路とは別に、電源供給指令を検出して電源回路を動作させる制御回路を設ける必要がある。
However, in order to configure the power supply device to start the power supply to the transmission device in response to the power supply command transmitted from the detection device via the transmission line, the power supply supplied to the transmission device is supplied to the power supply device. In addition to the power supply circuit that generates the voltage, it is necessary to provide a control circuit that detects the power supply instruction and operates the power supply circuit.
このため、上記のように電源装置の動作を、テレビ受信装置の動作状態に応じて制御するようにした場合、電源装置から電源供給を受ける伝送機器での消費電力を低減することはできるものの、電源装置内では、上記制御回路を常時動作させる必要があるため、端末側のテレビ受信装置の動作停止時に、電源装置と伝送機器とで消費される電力量を略ゼロにまで低減することはできず、テレビ放送信号伝送システムの省電力化の妨げになるという問題があった。
For this reason, when the operation of the power supply device is controlled according to the operation state of the television receiver as described above, the power consumption in the transmission device that receives power supply from the power supply device can be reduced. Since it is necessary to always operate the control circuit in the power supply device, the amount of power consumed by the power supply device and the transmission device can be reduced to substantially zero when the operation of the television receiver on the terminal side is stopped. In other words, there is a problem that power saving of the television broadcast signal transmission system is hindered.
本発明は、テレビ放送信号伝送システムの伝送線上に設けられた伝送機器へ電源供給を行う電源装置において、伝送機器への電源供給が不要なときの消費電力の低減を図ることを目的とする。
An object of the present invention is to reduce power consumption when power supply to a transmission device is unnecessary in a power supply device that supplies power to a transmission device provided on a transmission line of a television broadcast signal transmission system.
かかる目的を達成するためになされた本発明の第１局面のテレビ放送信号伝送機器の電源装置は、
外部電源から電源供給を受けて、テレビ放送信号伝送システムの伝送線に設けられた伝送機器を動作させるのに必要な直流電源電圧を生成する電源回路を備え、該電源回路にて生成された直流電源電圧を前記伝送機器に供給する、テレビ放送信号伝送機器の電源装置において、
前記外部電源に接続される電源プラグと前記電源回路との間の電源供給経路に設けられ、リレーコイルへの通電／非通電により該電源供給経路を導通／遮断する常開型のリレースイッチと、
前記電源回路にて生成された直流電源電圧を出力する出力経路から電源供給を受けて、コンデンサおよび二次電池の少なくとも一方からなる蓄電手段を充電する充電手段と、
前記蓄電手段に充電された電力にて前記リレーコイルに電流を流す通電経路上に設けられ、該通電経路を導通／遮断する常開型のスイッチング素子と、
前記テレビ放送信号伝送システムの伝送線を介して当該電源装置に前記伝送機器への電源供給指令を表す制御信号が入力されると、該制御信号により前記スイッチング素子の駆動信号を生成して、前記スイッチング素子をオンさせる駆動回路と、
前記リレースイッチに並列に接続され、外部操作によって前記電源供給経路を導通させるための常開型の操作スイッチと、
を備えたことを特徴とする。 A power supply device for a television broadcast signal transmission device according to the first aspect of the present invention, which has been made to achieve the above object,
A power supply circuit that receives a power supply from an external power supply and generates a DC power supply voltage necessary for operating a transmission device provided in a transmission line of the television broadcast signal transmission system, and a direct current generated by the power supply circuit In a power supply device for a television broadcast signal transmission device that supplies a power supply voltage to the transmission device,
A normally open relay switch that is provided in a power supply path between a power plug connected to the external power supply and the power circuit, and that conducts / cuts off the power supply path by energization / non-energization of the relay coil;
Charging means for receiving a power supply from an output path for outputting a DC power supply voltage generated by the power supply circuit and charging a power storage means including at least one of a capacitor and a secondary battery;
A normally-open switching element that is provided on an energization path for passing an electric current to the relay coil with electric power charged in the power storage means, and that conducts / cuts off the energization path;
When a control signal representing a power supply command to the transmission device is input to the power supply device via the transmission line of the television broadcast signal transmission system, the control signal generates a drive signal for the switching element, and A drive circuit for turning on the switching element;
A normally open type operation switch connected in parallel to the relay switch, for conducting the power supply path by an external operation;
It is provided with.
外部電源から電源供給を受けて、テレビ放送信号伝送システムの伝送線に設けられた伝送機器を動作させるのに必要な直流電源電圧を生成する電源回路を備え、該電源回路にて生成された直流電源電圧を前記伝送機器に供給する、テレビ放送信号伝送機器の電源装置において、
前記外部電源に接続される電源プラグと前記電源回路との間の電源供給経路に設けられ、リレーコイルへの通電／非通電により該電源供給経路を導通／遮断する常開型のリレースイッチと、
前記電源回路にて生成された直流電源電圧を出力する出力経路から電源供給を受けて、コンデンサおよび二次電池の少なくとも一方からなる蓄電手段を充電する充電手段と、
前記蓄電手段に充電された電力にて前記リレーコイルに電流を流す通電経路上に設けられ、該通電経路を導通／遮断する常開型のスイッチング素子と、
前記テレビ放送信号伝送システムの伝送線を介して当該電源装置に前記伝送機器への電源供給指令を表す制御信号が入力されると、該制御信号により前記スイッチング素子の駆動信号を生成して、前記スイッチング素子をオンさせる駆動回路と、
前記リレースイッチに並列に接続され、外部操作によって前記電源供給経路を導通させるための常開型の操作スイッチと、
を備えたことを特徴とする。 A power supply device for a television broadcast signal transmission device according to the first aspect of the present invention, which has been made to achieve the above object,
A power supply circuit that receives a power supply from an external power supply and generates a DC power supply voltage necessary for operating a transmission device provided in a transmission line of the television broadcast signal transmission system, and a direct current generated by the power supply circuit In a power supply device for a television broadcast signal transmission device that supplies a power supply voltage to the transmission device,
A normally open relay switch that is provided in a power supply path between a power plug connected to the external power supply and the power circuit, and that conducts / cuts off the power supply path by energization / non-energization of the relay coil;
Charging means for receiving a power supply from an output path for outputting a DC power supply voltage generated by the power supply circuit and charging a power storage means including at least one of a capacitor and a secondary battery;
A normally-open switching element that is provided on an energization path for passing an electric current to the relay coil with electric power charged in the power storage means, and that conducts / cuts off the energization path;
When a control signal representing a power supply command to the transmission device is input to the power supply device via the transmission line of the television broadcast signal transmission system, the control signal generates a drive signal for the switching element, and A drive circuit for turning on the switching element;
A normally open type operation switch connected in parallel to the relay switch, for conducting the power supply path by an external operation;
It is provided with.
また、本発明の第２局面のテレビ放送信号伝送システムは、
テレビ放送信号伝送用の伝送機器、及び、外部電源から電源供給を受けて前記伝送機器駆動用の電源電圧を生成し当該電源電圧を前記伝送機器に供給する電源装置、が設けられた伝送線を介して、テレビ放送信号を複数のテレビ端子まで伝送するテレビ放送信号伝送システムにおいて、
前記各テレビ端子に接続されるテレビ受信装置側に、それぞれ、当該テレビ受信装置が前記テレビ放送信号を受信中であるか否かを判定して、当該テレビ受信装置が前記テレビ放送信号を受信中であれば、前記伝送機器への電源供給指令を表す制御信号を前記テレビ端子から前記伝送線に出力させる受信状態検出装置を設け、
前記電源装置には、本発明の第１局面の電源装置を用いることを特徴とする。 The television broadcast signal transmission system according to the second aspect of the present invention is
A transmission line provided with a transmission device for transmitting a television broadcast signal, and a power supply device that receives power supply from an external power supply to generate a power supply voltage for driving the transmission device and supplies the power supply voltage to the transmission device. Through a television broadcast signal transmission system that transmits television broadcast signals to a plurality of television terminals.
Each of the television receivers connected to the television terminals determines whether the television receiver is receiving the television broadcast signal, and the television receiver is receiving the television broadcast signal. If so, providing a reception state detection device for outputting a control signal representing a power supply command to the transmission device from the television terminal to the transmission line,
The power supply apparatus uses the power supply apparatus according to the first aspect of the present invention.
テレビ放送信号伝送用の伝送機器、及び、外部電源から電源供給を受けて前記伝送機器駆動用の電源電圧を生成し当該電源電圧を前記伝送機器に供給する電源装置、が設けられた伝送線を介して、テレビ放送信号を複数のテレビ端子まで伝送するテレビ放送信号伝送システムにおいて、
前記各テレビ端子に接続されるテレビ受信装置側に、それぞれ、当該テレビ受信装置が前記テレビ放送信号を受信中であるか否かを判定して、当該テレビ受信装置が前記テレビ放送信号を受信中であれば、前記伝送機器への電源供給指令を表す制御信号を前記テレビ端子から前記伝送線に出力させる受信状態検出装置を設け、
前記電源装置には、本発明の第１局面の電源装置を用いることを特徴とする。 The television broadcast signal transmission system according to the second aspect of the present invention is
A transmission line provided with a transmission device for transmitting a television broadcast signal, and a power supply device that receives power supply from an external power supply to generate a power supply voltage for driving the transmission device and supplies the power supply voltage to the transmission device. Through a television broadcast signal transmission system that transmits television broadcast signals to a plurality of television terminals.
Each of the television receivers connected to the television terminals determines whether the television receiver is receiving the television broadcast signal, and the television receiver is receiving the television broadcast signal. If so, providing a reception state detection device for outputting a control signal representing a power supply command to the transmission device from the television terminal to the transmission line,
The power supply apparatus uses the power supply apparatus according to the first aspect of the present invention.
本発明の第１局面のテレビ放送信号伝送機器の電源装置においては、電源プラグと電源回路との間の電源供給経路に常開型のリレースイッチが設けられており、このリレースイッチのリレーコイルには、充電手段を介して充電される蓄電手段から電流を流すための通電経路が形成されている。
In the power supply apparatus for a television broadcast signal transmission device according to the first aspect of the present invention, a normally open relay switch is provided in the power supply path between the power plug and the power circuit, and the relay coil of this relay switch is provided with the relay coil. Is formed with an energization path for flowing current from the storage means charged via the charging means.
そして、この通電経路には、スイッチング素子が設けられており、スイッチング素子は、テレビ放送信号伝送システムの伝送線を介して伝送機器への電源供給指令を表す制御信号が入力されているとき、駆動回路により生成される駆動信号にてオンされ、制御信号が入力されていないときにはオフ状態になる。
The energization path is provided with a switching element, and the switching element is driven when a control signal representing a power supply command to the transmission equipment is input via the transmission line of the television broadcast signal transmission system. It is turned on by a drive signal generated by the circuit, and is turned off when no control signal is input.
従って、リレースイッチは、伝送線を介して制御信号が入力されているときにだけオン状態となって、電源プラグから電源回路への電源供給経路を導通させ、伝送線を介して制御信号が入力されていないときには、電源プラグから電源回路への電源供給経路を遮断することになる。
Therefore, the relay switch is turned on only when a control signal is input via the transmission line, and the power supply path from the power plug to the power circuit is conducted, and the control signal is input via the transmission line. If not, the power supply path from the power plug to the power circuit is cut off.
このため、本発明の電源装置によれば、伝送線を介して制御信号が入力されていない状態では、外部電源からの電源供給が遮断されて、電源回路等での電力消費が抑制され、電源装置（延いてはテレビ放送信号伝送システム）の消費電力の低減を促進することができる。
Therefore, according to the power supply device of the present invention, in a state where no control signal is input via the transmission line, the power supply from the external power supply is cut off, and the power consumption in the power supply circuit or the like is suppressed. Reduction of power consumption of the apparatus (and thus a television broadcast signal transmission system) can be promoted.
また、伝送線を介して制御信号が入力されたときにリレースイッチをオフ状態からオン状態に切り換えるための電源は、電源回路の動作時に蓄電手段に蓄積された電力であるが、例えば、電源プラグを外部電源のコンセントに差し込み、電源装置の使用を開始する初期状態では、蓄電手段が放電されていて、制御信号の入力によりスイッチング素子がオン状態に制御されても、リレーコイルに通電できないことが考えられる。そして、リレーコイルに通電できなければ、リレースイッチを介して電源プラグから電源回路への電源供給経路を形成することができない。
The power source for switching the relay switch from the OFF state to the ON state when a control signal is input via the transmission line is the power stored in the power storage means during the operation of the power supply circuit. In the initial state where the power supply device is used by plugging in the outlet of the external power supply, even if the storage means is discharged and the switching element is controlled to be turned on by the input of the control signal, the relay coil cannot be energized. Conceivable. If the relay coil cannot be energized, a power supply path from the power plug to the power circuit cannot be formed via the relay switch.
そこで、本発明では、リレースイッチに対して並列に、常開型の操作スイッチを設け、この操作スイッチを操作することで、電源プラグから電源回路への電源供給経路を形成して、電源回路から直流電源電圧を出力させ、その直流電源電圧にて蓄電手段が充電されるようにしている。
Therefore, in the present invention, a normally open type operation switch is provided in parallel to the relay switch, and by operating this operation switch, a power supply path from the power plug to the power circuit is formed, A DC power supply voltage is output, and the storage means is charged with the DC power supply voltage.
このため、本発明の電源装置によれば、蓄電手段が放電されていても、操作スイッチを操作することで蓄電手段に充電し、上記のように、電源装置の動作を、伝送線を介して入力される制御信号に従い制御することができるようになる。
Therefore, according to the power supply device of the present invention, even when the power storage means is discharged, the power storage means is charged by operating the operation switch, and as described above, the operation of the power supply device is performed via the transmission line. It becomes possible to control according to the input control signal.
次に、本発明の第２局面のテレビ信号伝送システムにおいては、テレビ放送信号が伝送される端末側のテレビ端子が複数備えられており、その複数のテレビ端子に接続されるテレビ受信装置側には、それぞれ、テレビ受信装置がテレビ放送信号を受信中であるか否かを判定して、テレビ受信装置がテレビ放送信号を受信中であれば、伝送機器への電源供給指令を表す制御信号をテレビ端子から伝送線に出力させる受信状態検出装置が設けられている。
Next, in the television signal transmission system according to the second aspect of the present invention, a plurality of terminal-side television terminals to which a television broadcast signal is transmitted are provided, and a television receiver connected to the plurality of television terminals is provided. Respectively determines whether the television receiver is receiving a television broadcast signal, and if the television receiver is receiving a television broadcast signal, a control signal indicating a power supply command to the transmission device is provided. A reception state detection device for outputting from a television terminal to a transmission line is provided.
そして、伝送線上の伝送機器に電源供給を行う電源装置には、上述した本発明の第１局面のテレビ放送信号伝送機器の電源装置が用いられる。
このため、本発明のテレビ信号伝送システムによれば、各テレビ端子に接続されるテレビ受信装置が全て受信動作を停止しており、全てのテレビ受信装置から伝送線に伝送機器への電源供給指令を表す制御信号が出力されていないときには、電源装置は、伝送機器への電源供給を停止するだけでなく、電源回路等の内部回路の動作を全て停止することになる。 The power supply apparatus for the television broadcast signal transmission apparatus according to the first aspect of the present invention described above is used as the power supply apparatus that supplies power to the transmission apparatus on the transmission line.
For this reason, according to the television signal transmission system of the present invention, all the television receivers connected to each television terminal stop the reception operation, and the power supply command to the transmission equipment is transmitted from all television receivers to the transmission line. When the control signal indicating is not output, the power supply device not only stops the power supply to the transmission equipment but also stops all the operations of the internal circuits such as the power supply circuit.
このため、本発明のテレビ信号伝送システムによれば、各テレビ端子に接続されるテレビ受信装置が全て受信動作を停止しており、全てのテレビ受信装置から伝送線に伝送機器への電源供給指令を表す制御信号が出力されていないときには、電源装置は、伝送機器への電源供給を停止するだけでなく、電源回路等の内部回路の動作を全て停止することになる。 The power supply apparatus for the television broadcast signal transmission apparatus according to the first aspect of the present invention described above is used as the power supply apparatus that supplies power to the transmission apparatus on the transmission line.
For this reason, according to the television signal transmission system of the present invention, all the television receivers connected to each television terminal stop the reception operation, and the power supply command to the transmission equipment is transmitted from all television receivers to the transmission line. When the control signal indicating is not output, the power supply device not only stops the power supply to the transmission equipment but also stops all the operations of the internal circuits such as the power supply circuit.
従って、本発明のテレビ信号伝送システムによれば、端末側の全てのテレビ受信装置が受信動作を停止しているとき（例えば真夜中など）に伝送機器及び電源装置で消費される電力量を低減して、テレビ放送信号伝送システムの消費電力の低減を図ることができる。
Therefore, according to the television signal transmission system of the present invention, the amount of power consumed by the transmission device and the power supply device is reduced when all the television receivers on the terminal side stop the reception operation (for example, at midnight). Thus, the power consumption of the television broadcast signal transmission system can be reduced.
２…ＶＨＦアンテナ、４…ＵＨＦアンテナ、６…衛星受信アンテナ、８…混合器、１０…ブースタ、１２…分配器、１４，１６…テレビ端子、２４…電源コンセント、２８…テレビ受信装置、３０…検出装置、３２…電源プラグ、３４…電源コンセント、３８…検出部、４０…電流検出回路、４２…コンパレータ、４４…信号生成回路、４８…電源回路、５０…電源装置、５２…電源プラグ、５４…電源回路、５６…直流通過フィルタ、５８…リレースイッチ、５８ａ…リレーコイル、６０…コンデンサ、６２…トランジスタ、６４…ダイオード、６６…制御信号通過フィルタ、６８…駆動回路、７０…操作スイッチ、Ｄ１…電源線、Ｄ２…電源供給経路、Ｌ…伝送線、Ｌ１…伝送経路、Ｌ２…出力経路。
2 ... VHF antenna, 4 ... UHF antenna, 6 ... satellite receiving antenna, 8 ... mixer, 10 ... booster, 12 ... distributor, 14,16 ... TV terminal, 24 ... power outlet, 28 ... TV receiver, 30 ... Detecting device 32 ... Power plug 34 ... Power outlet 38 ... Detecting unit 40 ... Current detecting circuit 42 ... Comparator 44 ... Signal generating circuit 48 ... Power circuit 50 ... Power device 52 ... Power plug 54 DESCRIPTION OF SYMBOLS ... Power supply circuit, 56 ... DC passing filter, 58 ... Relay switch, 58a ... Relay coil, 60 ... Capacitor, 62 ... Transistor, 64 ... Diode, 66 ... Control signal passing filter, 68 ... Drive circuit, 70 ... Operation switch, D1 ... power line, D2 ... power supply path, L ... transmission line, L1 ... transmission path, L2 ... output path.
以下に本発明の実施形態を図面と共に説明する。
本実施形態のテレビ放送信号伝送システムは、所謂ホーム共同受信を行うためのものであり、図１に示すように、テレビ放送信号の受信アンテナとして、ＶＨＦ帯のテレビ放送電波を受信するＶＨＦアンテナ２と、ＵＨＦ帯のテレビ放送電波を受信するＵＨＦアンテナ４と、放送衛星（ＢＳ）や通信衛星（ＣＳ）を介して配信される衛星放送電波を受信する衛星受信アンテナ６を備える。 Embodiments of the present invention will be described below with reference to the drawings.
The television broadcast signal transmission system according to the present embodiment is for so-called home joint reception. As shown in FIG. 1, aVHF antenna 2 that receives a television broadcast radio wave in the VHF band is used as a television broadcast signal reception antenna. A UHF antenna 4 for receiving UHF band television broadcast radio waves, and a satellite reception antenna 6 for receiving satellite broadcast radio waves distributed via broadcast satellites (BS) and communication satellites (CS).
本実施形態のテレビ放送信号伝送システムは、所謂ホーム共同受信を行うためのものであり、図１に示すように、テレビ放送信号の受信アンテナとして、ＶＨＦ帯のテレビ放送電波を受信するＶＨＦアンテナ２と、ＵＨＦ帯のテレビ放送電波を受信するＵＨＦアンテナ４と、放送衛星（ＢＳ）や通信衛星（ＣＳ）を介して配信される衛星放送電波を受信する衛星受信アンテナ６を備える。 Embodiments of the present invention will be described below with reference to the drawings.
The television broadcast signal transmission system according to the present embodiment is for so-called home joint reception. As shown in FIG. 1, a
そして、ＶＨＦアンテナ２及びＵＨＦアンテナ４からの受信信号は混合器８で混合された後、ブースタ１０に入力され、衛星受信アンテナ６からの受信信号もブースタ１０に入力される。
The reception signals from the VHF antenna 2 and the UHF antenna 4 are mixed by the mixer 8 and then input to the booster 10, and the reception signal from the satellite reception antenna 6 is also input to the booster 10.
ブースタ１０は、上記ＶＨＦアンテナ２，ＵＨＦアンテナ４，衛星受信アンテナ６からの受信信号（換言すれば各放送チャンネルのテレビ放送信号）を所定レベルまで増幅するためのものであり、端末側に設けられた電源装置５０から、同軸ケーブルからなる伝送線Ｌを介して伝送されてくる直流電源電圧（例えばＤＣ１５Ｖ）を受けて動作するように構成されている。
The booster 10 is for amplifying the reception signals from the VHF antenna 2, the UHF antenna 4, and the satellite reception antenna 6 (in other words, the television broadcast signal of each broadcast channel) to a predetermined level, and is provided on the terminal side. The power supply device 50 is configured to operate by receiving a DC power supply voltage (for example, DC15V) transmitted through a transmission line L made of a coaxial cable.
また、ブースタ１０で増幅された受信信号は、分配器１２にて分配（本実施形態では４分配）され、分配器１２の各分配出力端子に接続された伝送線Ｌを介して、建造物内の各部屋に設置されたテレビ端子１４，１６，…までそれぞれ伝送される。
The received signal amplified by the booster 10 is distributed by the distributor 12 (four distributions in the present embodiment), and is transmitted through the transmission lines L connected to the distribution output terminals of the distributor 12 in the building. Are transmitted to television terminals 14, 16,... Installed in each room.
テレビ端子１４，１６，…は、各部屋に設置されたテレビ受信装置２８（テレビ受像器、テレビチューナ、録画装置等）に受信信号を配信するためのものであり、テレビ受信装置２８のアンテナ入力端子に同軸ケーブルを介して接続するためのコネクタ（詳しくはＦ型コネクタ）を１又は複数備えている。
The TV terminals 14, 16,... Are for distributing received signals to a television receiver 28 (TV receiver, TV tuner, recording device, etc.) installed in each room. One or more connectors (specifically, F-type connectors) for connecting to the terminals via coaxial cables are provided.
そして、本実施形態のテレビ放送信号伝送システムにおいては、テレビ端子１４，１６，…のコネクタにテレビ受信装置２８を接続する際には、検出装置３０を介して行うようにされている。
In the television broadcast signal transmission system of the present embodiment, when the television receiver 28 is connected to the connectors of the television terminals 14, 16,..., The detection device 30 is used.
なお、図１には、テレビ受信装置２８及び検出装置３０は一組だけ記載されているが、検出装置３０は、各部屋に設けられるテレビ受信装置２８毎に、テレビ受信装置２８とテレビ端子１４，１６，…との間に設けられる。テレビ端子１６等と接続されるテレビ受信装置２８および検出装置３０の図示は省略する。
In FIG. 1, only one set of the television receiver 28 and the detection device 30 is shown, but the detection device 30 is provided for each television receiver 28 provided in each room. , 16,... Illustration of the television receiver 28 and the detection device 30 connected to the television terminal 16 and the like is omitted.
次に、検出装置３０は、テレビ端子１４，１６，…とテレビ受信装置２８との間に設けられて、テレビ端子１４，１６，…のコネクタから出力される受信信号をテレビ受信装置２８のアンテナ入力端子に入力する。また、この検出装置３０は、建造物内の各部屋に設置された電源コンセント２４，２６，…から商用電源（例えばＡＣ１００Ｖ）を取り込み、その取り込んだ商用電源をテレビ受信装置２８に供給し、しかも、その商用電源の供給状態からテレビ受信装置２８の動作状態を検出するものであり、図２に示すように構成されている。
Next, the detection device 30 is provided between the television terminals 14, 16,... And the television receiver 28, and receives a reception signal output from the connector of the television terminals 14, 16,. Input to the input terminal. Further, the detection device 30 takes in a commercial power source (for example, AC 100V) from power outlets 24, 26,... Installed in each room in the building, and supplies the taken commercial power source to the television receiver 28. The operation state of the television receiver 28 is detected from the commercial power supply state, and is configured as shown in FIG.
すなわち、検出装置３０には、テレビ端子１４，１６，…のコネクタに同軸ケーブルを介して接続されて受信信号（テレビ放送信号）を取り込むための入力端子Ｔ１と、入力端子Ｔ１を介してテレビ端子１４，１６，…から取り込んだ受信信号をテレビ受信装置２８に出力するための出力端子Ｔ２と、これら各端子Ｔ１，Ｔ２間を接続して受信信号を伝送するための伝送経路Ｌ１と、各部屋の電源コンセント２４，２６，…に差し込まれて商用電源（例えばＡＣ１００Ｖ）を取り込むための電源プラグ３２と、この電源プラグ３２から入力された商用電源をテレビ受信装置２８に供給するための電源コンセント３４と、これら電源プラグ３２，電源コンセント３４間を接続して商用電源の給電経路を形成する電源線Ｄ１と、が設けられている。
In other words, the detection device 30 is connected to the connectors of the television terminals 14, 16,... Via a coaxial cable and receives an input terminal T1 for capturing a received signal (television broadcast signal), and a television terminal via the input terminal T1. .., A transmission path L1 for transmitting the received signal by connecting the terminals T1 and T2, and each room. Are plugged into the power outlets 24, 26,... For taking in commercial power (for example, AC 100 V), and a power outlet 34 for supplying commercial power input from the power plug 32 to the television receiver 28. And a power line D1 that connects between the power plug 32 and the power outlet 34 to form a commercial power supply path. .
また、検出装置３０には、電流検出回路４０と、コンパレータ４２と、信号生成回路４４と、電源回路４８と、が備えられている。
電流検出回路４０は、電源線Ｄ１に設けられた検出部３８を介して電源線Ｄ１に流れる電流量を検出する。 Thedetection device 30 includes a current detection circuit 40, a comparator 42, a signal generation circuit 44, and a power supply circuit 48.
Thecurrent detection circuit 40 detects the amount of current flowing through the power supply line D1 via the detection unit 38 provided in the power supply line D1.
電流検出回路４０は、電源線Ｄ１に設けられた検出部３８を介して電源線Ｄ１に流れる電流量を検出する。 The
The
コンパレータ４２は、電流検出回路４０からの検出電圧が閾値電圧Ｖｔｈ以上であるか否かを判定することにより、電源コンセント３４に接続されたテレビ受信装置２８の消費電流量が所定の閾値以上であるか否かを判定する。
The comparator 42 determines whether or not the detected voltage from the current detection circuit 40 is equal to or higher than the threshold voltage Vth, so that the amount of current consumed by the television receiver 28 connected to the power outlet 34 is equal to or higher than a predetermined threshold. It is determined whether or not.
信号生成回路４４は、コンパレータ４２でテレビ受信装置２８の消費電流量が所定の閾値以上であると判定されると（換言すれば検出電圧が閾値電圧Ｖｔｈ以上であるとき）、テレビ受信装置２８がテレビ放送信号を受信中であると判断して、電源装置５０からブースタ１０への電源供給指令を表す制御信号を生成し、入力端子Ｔ１からテレビ端子１４，１６，…（延いてはテレビ放送信号伝送システムの伝送線Ｌ）に出力させる。
When the comparator 42 determines that the current consumption amount of the television receiver 28 is equal to or greater than a predetermined threshold (in other words, when the detected voltage is equal to or greater than the threshold voltage Vth), the signal generator 44 It is determined that a television broadcast signal is being received, a control signal representing a power supply command from the power supply device 50 to the booster 10 is generated, and the television terminals 14, 16,... Output to the transmission line L) of the transmission system.
電源回路４８は、電源線Ｄ１から商用電源の電源供給を受けて、上記各回路の駆動電圧（直流電圧）を生成する。
信号生成回路４４は、受信信号に比べて極めて低い周波数帯の信号（例えば、トーン信号）を制御信号として生成するものであり、その生成された制御信号は、ローパスフィルタ（ＬＰＦ）４６を介して入力端子Ｔ１に出力される。 Thepower supply circuit 48 receives a commercial power supply from the power supply line D1, and generates a drive voltage (DC voltage) for each circuit.
Thesignal generation circuit 44 generates a signal (for example, a tone signal) in a frequency band extremely lower than that of the reception signal as a control signal, and the generated control signal is passed through a low-pass filter (LPF) 46. It is output to the input terminal T1.
信号生成回路４４は、受信信号に比べて極めて低い周波数帯の信号（例えば、トーン信号）を制御信号として生成するものであり、その生成された制御信号は、ローパスフィルタ（ＬＰＦ）４６を介して入力端子Ｔ１に出力される。 The
The
なお、信号生成回路４４にて生成される制御信号は、混信により電源装置５０側で制御信号を認識できなくなるのを防止するため、当該テレビ放送信号伝送システムに設けられる検出装置３０毎に異なる周波数帯に設定される。このため、信号生成回路４４は、外部操作によって、生成する制御信号の種別（周波数帯域）を、複数のものの中から選択できるように構成されている。
Note that the control signal generated by the signal generation circuit 44 has a different frequency for each detection device 30 provided in the television broadcast signal transmission system in order to prevent the power supply device 50 from recognizing the control signal due to interference. Set to belt. For this reason, the signal generation circuit 44 is configured such that the type (frequency band) of the control signal to be generated can be selected from a plurality of ones by an external operation.
また次に、入力端子Ｔ１と出力端子Ｔ２とを接続する伝送経路Ｌ１上には、入力端子Ｔ１から入力された受信信号を出力端子Ｔ２側に伝送し、ＬＰＦ４６を介して入力端子Ｔ１（換言すれば伝送経路Ｌ１）に入力される制御信号が出力端子Ｔ２側に伝送されるのを阻止するハイパスフィルタ（ＨＰＦ）３６が設けられている。
Next, on the transmission path L1 connecting the input terminal T1 and the output terminal T2, the reception signal input from the input terminal T1 is transmitted to the output terminal T2 side, and the input terminal T1 (in other words, in other words, through the LPF 46). For example, a high-pass filter (HPF) 36 is provided for preventing the control signal input to the transmission path L1) from being transmitted to the output terminal T2.
このため、検出装置３０からテレビ端子１４，１６，…には、電源コンセント３４に接続されたテレビ受信装置２８がテレビ放送信号を受信中であるときに、制御信号が出力されることになる。
Therefore, a control signal is output from the detection device 30 to the television terminals 14, 16,... When the television receiver 28 connected to the power outlet 34 is receiving a television broadcast signal.
そして、検出装置３０から出力された制御信号は、建造物内に配線された伝送線Ｌを介して分配器１２側に伝送されるが、分配器１２には、各分配端子間で低周波の制御信号を通過させるための信号経路が形成されている。
The control signal output from the detection device 30 is transmitted to the distributor 12 side via the transmission line L wired in the building. The distributor 12 has a low frequency between the distribution terminals. A signal path for passing the control signal is formed.
従って、テレビ端子１４，１６，…に接続された検出装置３０からの制御信号は、分配器１２を介してテレビ放送信号伝送システムの全ての伝送線Ｌに伝送され、電源装置５０が伝送線Ｌのどの位置に配置されていても、電源装置５０には各検出装置３０からの制御信号が伝送されることになる。
Therefore, the control signal from the detection device 30 connected to the television terminals 14, 16,... Is transmitted to all the transmission lines L of the television broadcast signal transmission system via the distributor 12, and the power supply device 50 is transmitted to the transmission line L. The control signal from each detection device 30 is transmitted to the power supply device 50 no matter where it is located.
次に、電源装置５０は、テレビ端子１６のコネクタに同軸ケーブルを介して接続されている。
図３に示すように、電源装置５０は、建造物内の各部屋に設置された商用電源の電源コンセント２４，２６，…に接続可能な電源プラグ５２と、電源プラグ５２を介して入力された商用電源からブースタ１０駆動用の直流電源電圧（例えばＤＣ１５Ｖ）を生成する電源回路５４と、テレビ端子１６のコネクタに同軸ケーブルを介して接続可能な出力端子Ｔ３と、電源回路５４にて生成された直流電源電圧を出力端子Ｔ３へと通過させる直流通過フィルタ５６とを備え、電源回路５４にて生成された直流電源電圧を直流通過フィルタ５６及び出力端子Ｔ３を介して、テレビ端子１６（延いては伝送線Ｌ）へ出力するように構成されている。 Next, thepower supply device 50 is connected to the connector of the television terminal 16 via a coaxial cable.
As shown in FIG. 3, thepower supply device 50 is input via a power plug 52 that can be connected to commercial power outlets 24, 26,... Installed in each room in the building, and the power plug 52. A power supply circuit 54 that generates a DC power supply voltage (for example, DC15V) for driving the booster 10 from a commercial power supply, an output terminal T3 that can be connected to the connector of the TV terminal 16 via a coaxial cable, and the power supply circuit 54. A DC pass filter 56 for passing the DC power supply voltage to the output terminal T3, and the DC power supply voltage generated by the power supply circuit 54 is connected to the TV terminal 16 (and extended through the DC pass filter 56 and the output terminal T3). It is configured to output to the transmission line L).
図３に示すように、電源装置５０は、建造物内の各部屋に設置された商用電源の電源コンセント２４，２６，…に接続可能な電源プラグ５２と、電源プラグ５２を介して入力された商用電源からブースタ１０駆動用の直流電源電圧（例えばＤＣ１５Ｖ）を生成する電源回路５４と、テレビ端子１６のコネクタに同軸ケーブルを介して接続可能な出力端子Ｔ３と、電源回路５４にて生成された直流電源電圧を出力端子Ｔ３へと通過させる直流通過フィルタ５６とを備え、電源回路５４にて生成された直流電源電圧を直流通過フィルタ５６及び出力端子Ｔ３を介して、テレビ端子１６（延いては伝送線Ｌ）へ出力するように構成されている。 Next, the
As shown in FIG. 3, the
また、電源プラグ５２から電源回路５４への電源供給経路Ｄ２には、リレースイッチ５８が設けられている。このリレースイッチ５８は、リレーコイル５８ａに通電されたときに接点がオン状態となって電源供給経路Ｄ２を導通させ、リレーコイル５８ａへの通電が遮断されているとき接点がオフ状態となって電源供給経路Ｄ２を遮断させる常閉型のリレーである。
A relay switch 58 is provided in the power supply path D2 from the power plug 52 to the power circuit 54. In the relay switch 58, when the relay coil 58a is energized, the contact is turned on to conduct the power supply path D2, and when the energization to the relay coil 58a is interrupted, the contact is turned off. This is a normally closed relay that cuts off the supply path D2.
そして、リレーコイル５８ａの一端は、常開型（所謂ノーマリオフ型）のトランジスタ６２を介してグランドラインに接地され、リレーコイル５８ａの他端は、一端がグランドラインに接地されたコンデンサ６０の他端に接続されている。
One end of the relay coil 58a is grounded to a ground line via a normally open (so-called normally-off type) transistor 62, and the other end of the relay coil 58a is the other end of the capacitor 60 whose one end is grounded to the ground line. It is connected to the.
また、このコンデンサ６０の他端には、ダイオード６４のカソードが接続されており、このダイオード６４のアノードは、電源回路５４から出力端子Ｔ３に至る直流電源電圧の出力経路Ｌ２に接続されている。
The other end of the capacitor 60 is connected to the cathode of a diode 64. The anode of the diode 64 is connected to the output path L2 of the DC power supply voltage from the power supply circuit 54 to the output terminal T3.
このため、リレースイッチ５８がオン状態で、電源回路５４に商用電源が供給されているときには、コンデンサ６０は電源回路５４にて生成された直流電源電圧により充電され、コンデンサ６０には、その容量と直流電源電圧とで決まる電力が蓄積されることになる。
Therefore, when the relay switch 58 is on and commercial power is supplied to the power supply circuit 54, the capacitor 60 is charged by the DC power supply voltage generated by the power supply circuit 54. Electric power determined by the DC power supply voltage is accumulated.
また、リレースイッチ５８がオフ状態で、電源回路５４が動作を停止しているときに、トランジスタ６２がオン状態になると、コンデンサ６０からリレーコイル５８ａに電流が流れて、リレースイッチ５８がオン状態となり、電源回路５４に商用電源が供給される。
In addition, when the transistor 62 is turned on when the relay switch 58 is off and the power supply circuit 54 is not operating, a current flows from the capacitor 60 to the relay coil 58a, and the relay switch 58 is turned on. Then, commercial power is supplied to the power circuit 54.
そして、電源回路５４に商用電源が供給されると、電源回路５４は直流電源電圧を生成して、出力経路Ｌ２に出力することから、コンデンサ６０は、ダイオード６４を介して充電され、リレースイッチ５８のオン状態（延いては電源回路５４の動作）が保持される。
When commercial power is supplied to the power supply circuit 54, the power supply circuit 54 generates a DC power supply voltage and outputs it to the output path L2. Therefore, the capacitor 60 is charged via the diode 64, and the relay switch 58 The ON state (and the operation of the power supply circuit 54) is maintained.
次に、直流通過フィルタ５６と出力端子Ｔ３との間の直流電源電圧の出力経路には、通過周波数帯域が制御信号の周波数帯域に設定されて、伝送線Ｌを流れる制御信号のみを選択的に通過させる制御信号通過フィルタ６６の一端が接続されている。
Next, in the output path of the DC power supply voltage between the DC pass filter 56 and the output terminal T3, the pass frequency band is set to the frequency band of the control signal, and only the control signal flowing through the transmission line L is selectively selected. One end of a control signal passing filter 66 to be passed is connected.
このため、テレビ端子１４，１６，…に接続された検出装置３０から出力された制御信号は、伝送線Ｌを介して電源装置５０に入力され、電源装置５０内で制御信号通過フィルタ６６により抽出されることになる。
Therefore, the control signal output from the detection device 30 connected to the TV terminals 14, 16,... Is input to the power supply device 50 through the transmission line L, and is extracted by the control signal pass filter 66 in the power supply device 50. Will be.
そして、その抽出された制御信号は、トランジスタ６２の駆動回路６８に入力される。この駆動回路６８は、制御信号通過フィルタ６６を介して入力される制御信号を全波整流することにより、トランジスタ６２をオンさせるための駆動信号を生成し、トランジスタ６２の制御端子に出力する。なお、トランジスタ６２は、制御端子（ゲート、ベース等）に駆動信号を受けてオン状態になるものであれば何でもよく、例えば、ｎチャネルのＭＯＳＦＥＴや、ＮＰＮ型のバイポーラトランジスタ等を用いることができる。
Then, the extracted control signal is input to the drive circuit 68 of the transistor 62. The drive circuit 68 generates a drive signal for turning on the transistor 62 by full-wave rectifying the control signal input via the control signal pass filter 66 and outputs the drive signal to the control terminal of the transistor 62. The transistor 62 may be anything as long as it receives a drive signal at its control terminal (gate, base, etc.) and is turned on. For example, an n-channel MOSFET or an NPN bipolar transistor can be used. .
この結果、伝送線Ｌを介して電源装置５０に検出装置３０からの制御信号が入力された際には、駆動回路６８がトランジスタ６２をオンさせ、これによって、リレースイッチ５８がオン状態となって、電源回路５４が動作し、電源装置５０から伝送線Ｌ上のブースタ１０に直流電源電圧が供給されることになる。
As a result, when the control signal from the detection device 30 is input to the power supply device 50 via the transmission line L, the drive circuit 68 turns on the transistor 62, thereby turning on the relay switch 58. Then, the power supply circuit 54 operates, and the DC power supply voltage is supplied from the power supply device 50 to the booster 10 on the transmission line L.
一方、テレビ端子１４，１６，…に接続された全てのテレビ受信装置２８が動作を停止しており、各テレビ受信装置２８に対し設けられた全ての検出装置３０から制御信号が出力されなくなると、駆動回路６８ではその制御信号からトランジスタ６２の駆動信号を生成することができなくなるので、トランジスタ６２はオフ状態となり、これによって、リレースイッチ５８がオフ状態となって、電源回路５４が動作を停止し、電源装置５０からブースタ１０への電源供給が停止されることになる。
On the other hand, when all the television receivers 28 connected to the television terminals 14, 16,... Have stopped operating and no control signals are output from all the detectors 30 provided for each television receiver 28. Since the drive circuit 68 cannot generate the drive signal for the transistor 62 from the control signal, the transistor 62 is turned off, thereby turning off the relay switch 58 and stopping the operation of the power supply circuit 54. Then, the power supply from the power supply device 50 to the booster 10 is stopped.
そして、この状態では、ブースタ１０だけでなく、電源装置５０においても、電力消費量が略ゼロになることから、本実施形態のテレビ放送信号伝送システムによれば、伝送線Ｌに接続されたテレビ受信装置２８にテレビ放送信号を伝送する必要のないときには、テレビ放送信号伝送システムでの電力消費量を必要最小限に抑えて、消費電力の低減を図ることができるようになる。
In this state, not only the booster 10 but also the power supply device 50 has substantially zero power consumption. Therefore, according to the television broadcast signal transmission system of this embodiment, the television connected to the transmission line L When it is not necessary to transmit a television broadcast signal to the receiving device 28, the power consumption in the television broadcast signal transmission system can be minimized and the power consumption can be reduced.
ところで、電源装置５０が出荷されてから長期間使用されない場合や、電源装置５０の動作が長期間停止された場合には、コンデンサ６０に蓄積された電荷が放電されてしまう。そして、この状態では、伝送線Ｌを介して制御信号が入力され、駆動回路６８によりトランジスタ６２をオン状態に駆動することができても、リレースイッチ５８をオン状態にすることはできない。
By the way, when the power supply device 50 is not used for a long time after being shipped, or when the operation of the power supply device 50 is stopped for a long time, the electric charge accumulated in the capacitor 60 is discharged. In this state, even if a control signal is input through the transmission line L and the transistor 62 can be driven to the on state by the drive circuit 68, the relay switch 58 cannot be turned on.
そこで、本実施形態の電源装置５０には、更に、リレースイッチ５８に対して並列に、常開型の操作スイッチ７０を設け、使用者が、この操作スイッチ７０をオン状態に操作すれば、電源プラグ５２から電源回路５４への電源供給経路Ｄ２を導通させて、電源回路５４から直流電源電圧を出力させ、その直流電源電圧にてコンデンサ６０が充電されるようにしている。
Therefore, the power supply device 50 of the present embodiment is further provided with a normally open type operation switch 70 in parallel with the relay switch 58, and if the user operates the operation switch 70 in the ON state, The power supply path D2 from the plug 52 to the power supply circuit 54 is turned on to output a DC power supply voltage from the power supply circuit 54, and the capacitor 60 is charged with the DC power supply voltage.
このため、本実施形態の電源装置５０によれば、コンデンサ６０が放電されていても、操作スイッチ７０を操作することでコンデンサ６０に充電し、電源装置５０の動作を、伝送線Ｌを介して入力される制御信号に従い制御することができるようになる。
For this reason, according to the power supply device 50 of this embodiment, even if the capacitor 60 is discharged, the capacitor 60 is charged by operating the operation switch 70, and the operation of the power supply device 50 is performed via the transmission line L. It becomes possible to control according to the input control signal.
なお、本実施形態においては、ブースタ１０が、本発明の伝送機器に相当し、ダイオード６４が、本発明の充電手段に相当し、トランジスタ６２が、本発明のスイッチング素子に相当する。
In this embodiment, the booster 10 corresponds to the transmission device of the present invention, the diode 64 corresponds to the charging means of the present invention, and the transistor 62 corresponds to the switching element of the present invention.
以上、本発明の一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、電源装置５０は、テレビ端子１６を介してテレビ放送信号伝送システムの伝送線Ｌに接続されるものとして説明したが、電源装置５０は、伝送線Ｌに接続されていればよく、テレビ放送信号伝送システムが構築される建造物内の任意の位置に設置することができる。 As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, In the range which does not deviate from the summary of this invention, a various aspect can be taken.
For example, in the above-described embodiment, thepower supply device 50 has been described as being connected to the transmission line L of the television broadcast signal transmission system via the television terminal 16, but the power supply device 50 may be connected to the transmission line L. What is necessary is just to install in the arbitrary positions in the building where a television broadcast signal transmission system is constructed.
例えば、上記実施形態では、電源装置５０は、テレビ端子１６を介してテレビ放送信号伝送システムの伝送線Ｌに接続されるものとして説明したが、電源装置５０は、伝送線Ｌに接続されていればよく、テレビ放送信号伝送システムが構築される建造物内の任意の位置に設置することができる。 As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, In the range which does not deviate from the summary of this invention, a various aspect can be taken.
For example, in the above-described embodiment, the
また、電源装置５０は、必ずしも単体で構成する必要はなく、例えば、電源供給の対象となる伝送機器（ブースタ１０等）に内蔵するようにしてもよい。
また、上記実施形態では、電源装置５０は、商用電源から電源供給を受けて動作するものとして説明したが、電源装置５０が、無停電電源装置やバッテリ等の商用電源とは異なる外部電源から電源供給を受けて動作するものであっても、本発明を適用できる。 Further, thepower supply device 50 is not necessarily configured as a single unit. For example, the power supply device 50 may be built in a transmission device (such as the booster 10) to be supplied with power.
In the above embodiment, thepower supply device 50 is described as operating by receiving power supply from a commercial power supply. However, the power supply device 50 is powered from an external power supply different from a commercial power supply such as an uninterruptible power supply or a battery. The present invention can be applied even if the apparatus operates by being supplied.
また、上記実施形態では、電源装置５０は、商用電源から電源供給を受けて動作するものとして説明したが、電源装置５０が、無停電電源装置やバッテリ等の商用電源とは異なる外部電源から電源供給を受けて動作するものであっても、本発明を適用できる。 Further, the
In the above embodiment, the
また、上記実施形態では、検出装置３０は、建造物内の各部屋に設置された電源コンセントから商用電源を取り込み、その取り込んだ商用電源をテレビ受信装置２８に供給するものとして説明したが、この検出装置３０についても、無停電電源装置やバッテリ等の商用電源とは異なる外部電源から電源供給を受けて、テレビ受信装置２８に電源供給を行うように構成してもよい。
In the above embodiment, the detection device 30 has been described as taking in commercial power from a power outlet installed in each room in the building and supplying the fetched commercial power to the television receiver 28. The detection device 30 may also be configured to receive power from an external power source different from a commercial power source such as an uninterruptible power supply or a battery, and to supply power to the television receiver 28.
つまり、検出装置３０は、テレビ受信装置２８への電源の供給状態からテレビ受信装置２８の動作状態を検出できればよく、外部電源については、商用電源でも無停電電源装置等の他の電源供給源でもよい。
In other words, the detection device 30 only needs to be able to detect the operation state of the television receiver 28 from the power supply state to the television receiver 28, and the external power source may be a commercial power source or another power supply source such as an uninterruptible power supply device. Good.
また、上記実施形態では、ブースタ１０に電源供給を行う電源装置５０に本発明を適用した場合について説明したが、例えば、衛星受信アンテナ６に設けられるコンバータ等、他の伝送機器に電源供給を行う電源装置に適用しても、上記実施形態と同様の効果を得ることができる。
Moreover, although the case where this invention was applied to the power supply device 50 which supplies power to the booster 10 was demonstrated in the said embodiment, for example, it supplies power to other transmission apparatuses, such as a converter provided in the satellite receiving antenna 6. Even when applied to a power supply device, the same effects as those of the above embodiment can be obtained.
また更に、上記実施形態では、蓄電手段としてコンデンサ６０を用いるものとして説明したが、コンデンサ６０に代えて二次電池を用いるようにしてもよい。
また、上記実施形態では、駆動回路６８は、制御信号を全波整流することによりトランジスタ６２をオンさせるための駆動信号を生成するものとして説明したが、例えば、リレーコイル５８ａに加えて、駆動回路６８にも、コンデンサ６０（又は二次電池）から電源供給を行うようにし、駆動回路６８は、制御信号の入力時に、コンデンサ６０（又は二次電池）からの供給電力により駆動信号を生成するよう構成してもよい。 In the above embodiment, the capacitor 60 is used as the power storage means. However, a secondary battery may be used instead of the capacitor 60.
In the above embodiment, thedrive circuit 68 has been described as generating a drive signal for turning on the transistor 62 by full-wave rectifying the control signal. For example, in addition to the relay coil 58a, the drive circuit 68 68, power is supplied from the capacitor 60 (or secondary battery), and the drive circuit 68 generates a drive signal based on the power supplied from the capacitor 60 (or secondary battery) when a control signal is input. It may be configured.
また、上記実施形態では、駆動回路６８は、制御信号を全波整流することによりトランジスタ６２をオンさせるための駆動信号を生成するものとして説明したが、例えば、リレーコイル５８ａに加えて、駆動回路６８にも、コンデンサ６０（又は二次電池）から電源供給を行うようにし、駆動回路６８は、制御信号の入力時に、コンデンサ６０（又は二次電池）からの供給電力により駆動信号を生成するよう構成してもよい。 In the above embodiment, the capacitor 60 is used as the power storage means. However, a secondary battery may be used instead of the capacitor 60.
In the above embodiment, the
Claims (2)
- 外部電源から電源供給を受けて、テレビ放送信号伝送システムの伝送線に設けられた伝送機器を動作させるのに必要な直流電源電圧を生成する電源回路を備え、該電源回路にて生成された直流電源電圧を前記伝送機器に供給する、テレビ放送信号伝送機器の電源装置において、
前記外部電源に接続される電源プラグと前記電源回路との間の電源供給経路に設けられ、リレーコイルへの通電／非通電により該電源供給経路を導通／遮断する常開型のリレースイッチと、
前記電源回路にて生成された直流電源電圧を出力する出力経路から電源供給を受けて、コンデンサおよび二次電池の少なくとも一方からなる蓄電手段を充電する充電手段と、
前記蓄電手段に充電された電力にて前記リレーコイルに電流を流す通電経路上に設けられ、該通電経路を導通／遮断する常開型のスイッチング素子と、
前記テレビ放送信号伝送システムの伝送線を介して当該電源装置に前記伝送機器への電源供給指令を表す制御信号が入力されると、該制御信号により前記スイッチング素子の駆動信号を生成して、前記スイッチング素子をオンさせる駆動回路と、
前記リレースイッチに並列に接続され、外部操作によって前記電源供給経路を導通させるための常開型の操作スイッチと、
を備えたことを特徴とするテレビ放送信号伝送機器の電源装置。 A power supply circuit that receives a power supply from an external power supply and generates a DC power supply voltage necessary for operating a transmission device provided in a transmission line of the television broadcast signal transmission system, and a direct current generated by the power supply circuit In a power supply device for a television broadcast signal transmission device that supplies a power supply voltage to the transmission device,
A normally open relay switch that is provided in a power supply path between a power plug connected to the external power supply and the power circuit, and that conducts / cuts off the power supply path by energization / non-energization of the relay coil;
Charging means for receiving a power supply from an output path for outputting a DC power supply voltage generated by the power supply circuit and charging a power storage means including at least one of a capacitor and a secondary battery;
A normally-open switching element that is provided on an energization path for passing an electric current to the relay coil with electric power charged in the power storage means, and that conducts / cuts off the energization path;
When a control signal representing a power supply command to the transmission device is input to the power supply device via the transmission line of the television broadcast signal transmission system, the control signal generates a drive signal for the switching element, and A drive circuit for turning on the switching element;
A normally open type operation switch connected in parallel to the relay switch, for conducting the power supply path by an external operation;
A power supply device for a television broadcast signal transmission device. - テレビ放送信号伝送用の伝送機器、及び、外部電源から電源供給を受けて前記伝送機器駆動用の電源電圧を生成し当該電源電圧を前記伝送機器に供給する電源装置、が設けられた伝送線を介して、テレビ放送信号を複数のテレビ端子まで伝送するテレビ放送信号伝送システムにおいて、
前記各テレビ端子に接続されるテレビ受信装置側に、それぞれ、当該テレビ受信装置が前記テレビ放送信号を受信中であるか否かを判定して、当該テレビ受信装置が前記テレビ放送信号を受信中であれば、前記伝送機器への電源供給指令を表す制御信号を前記テレビ端子から前記伝送線に出力させる受信状態検出装置を設け、
前記電源装置には、請求項１に記載の電源装置を用いることを特徴とするテレビ放送信号伝送システム。 A transmission line provided with a transmission device for transmitting a television broadcast signal, and a power supply device that receives power supply from an external power supply to generate a power supply voltage for driving the transmission device and supplies the power supply voltage to the transmission device. Through a television broadcast signal transmission system that transmits television broadcast signals to a plurality of television terminals.
Each of the television receivers connected to the television terminals determines whether the television receiver is receiving the television broadcast signal, and the television receiver is receiving the television broadcast signal. If so, providing a reception state detection device for outputting a control signal representing a power supply command to the transmission device from the television terminal to the transmission line,
A television broadcast signal transmission system using the power supply device according to claim 1 as the power supply device.
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| JP2000125369A (en) * | 1998-10-20 | 2000-04-28 | Sony Corp | Power supply device |
| JP2004274897A (en) * | 2003-03-10 | 2004-09-30 | Victor Co Of Japan Ltd | Standby power saving power supply device |
| JP2008010972A (en) * | 2006-06-27 | 2008-01-17 | Funai Electric Co Ltd | Power supply control apparatus, and television receiver |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000125369A (en) * | 1998-10-20 | 2000-04-28 | Sony Corp | Power supply device |
| JP2004274897A (en) * | 2003-03-10 | 2004-09-30 | Victor Co Of Japan Ltd | Standby power saving power supply device |
| JP2008010972A (en) * | 2006-06-27 | 2008-01-17 | Funai Electric Co Ltd | Power supply control apparatus, and television receiver |
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