WO2011122675A1 - Television broadcast signal transmission system - Google Patents

Television broadcast signal transmission system Download PDF

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Publication number
WO2011122675A1
WO2011122675A1 PCT/JP2011/058106 JP2011058106W WO2011122675A1 WO 2011122675 A1 WO2011122675 A1 WO 2011122675A1 JP 2011058106 W JP2011058106 W JP 2011058106W WO 2011122675 A1 WO2011122675 A1 WO 2011122675A1
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WO
WIPO (PCT)
Prior art keywords
power supply
television
broadcast signal
television broadcast
terminal
Prior art date
Application number
PCT/JP2011/058106
Other languages
French (fr)
Japanese (ja)
Inventor
寛至 松原
正明 長瀬
順 植村
Original Assignee
マスプロ電工株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by マスプロ電工株式会社 filed Critical マスプロ電工株式会社
Publication of WO2011122675A1 publication Critical patent/WO2011122675A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/165—Centralised control of user terminal ; Registering at central
    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
    • H04N21/4436—Power management, e.g. shutting down unused components of the receiver
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/654—Transmission by server directed to the client
    • H04N21/6543—Transmission by server directed to the client for forcing some client operations, e.g. recording
    • 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 television broadcast signal transmission system that transmits television broadcast signals to a plurality of television terminals.
  • transmission devices such as an amplifier and a frequency converter are usually provided on a transmission line for transmitting a television broadcast signal.
  • the amplifier amplifies the television broadcast signal.
  • the frequency converter changes the channel arrangement of 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. Is configured to do.
  • 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. It has been proposed to provide a power supply control device in a terminal device provided (see, for example, Patent Document 1).
  • the power supply control device detects the operating state of the television receiving device, and causes the power supply device to supply power to the amplifier when the television receiving device is operating. On the other hand, the power supply control device stops the power supply from the power supply device to the amplifier when the operation of the television receiver is stopped.
  • the proposed power control device is incorporated in a terminal device between the power supply device to which the television receiver is connected or 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 device to the amplifier is executed / stopped by determining the operating state of the device, the television that branches and distributes the television broadcast signal amplified by the amplifier and transmits it to a plurality of television terminals It could not be applied to a broadcast signal transmission system.
  • the proposed power supply control device includes a plurality of TV terminals to which the television receiver is connected because the power supply is switched from the power supply device to the amplifier in accordance with the operating state of the television receiver connected to the power supply device.
  • the power supply from the power supply device to the amplifier is switched regardless of the operating state of the television receiver connected to the television terminal not provided with the power supply device.
  • the proposed power control device cannot be adopted. For this reason, in a television broadcast signal transmission system provided with a plurality of television terminals, there is a problem that it is not possible to reduce the energy consumption of transmission equipment such as amplifiers.
  • the present invention has been made in view of these problems, and in a television broadcast signal transmission system that transmits a television broadcast signal to a plurality of television terminals, the television broadcast signal is transmitted when a television receiver connected to each television terminal operates.
  • An object of the present invention is to minimize the operation period of transmission equipment provided on a transmission line within a possible range.
  • 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 TV terminal is configured to input the TV broadcast signal to the TV receiver via a connection adapter, respectively.
  • Each connection adapter includes An input terminal connected to the television terminal for capturing the television broadcast signal from the television terminal; An output terminal for outputting a television broadcast signal captured from the television terminal via the input terminal to the television receiver; A power plug to capture external power, A power outlet for supplying external power input from the power plug to the television receiver; Determining means for determining whether or not a television receiver receiving power supply from the power outlet is receiving the television broadcast signal; When the determination means determines that the television receiver is receiving the television broadcast signal, the input signal is used to permit the supply of the power supply voltage from the power supply device to the transmission device.
  • Control means for outputting from the terminal to the television terminal; Provided, When the permission signal is transmitted from at least one of the connection adapters to the power supply device via the television terminal and the transmission line, the power supply voltage is supplied to the transmission device, When the permission signal is not transmitted, power supply switching means for stopping the supply of the power supply voltage to the transmission device is provided.
  • the invention of the second aspect of the present application is the television broadcast signal transmission system of the first aspect of the present application, wherein the power supply switching means provided in the power supply device includes: When the permission signal is transmitted from at least one of the connection adapters via the television terminal and the transmission line, a power supply circuit that receives power supply from the external power supply and generates a power supply voltage for driving the transmission device When the permission signal is not transmitted from each of the connection adapters, the operation of the power supply circuit is stopped to switch the supply / stop of the power supply voltage to the transmission device.
  • the invention of the third aspect of the present application is the television broadcast signal transmission system according to the first aspect or the second aspect, wherein the determining means includes: A current detection circuit that is provided on a power supply path of an external power source from the power plug to the power outlet and detects the amount of current flowing through the power supply path; A determination circuit that determines that the television receiver is receiving the television broadcast signal when the amount of current detected by the current detection circuit is equal to or greater than a preset threshold; It is provided with.
  • the invention of the fourth aspect of the present application is the television broadcast signal transmission system of the first aspect or the second aspect, wherein the determination means is Receiving means for receiving a transmission signal from a remote control device for remotely operating the television receiver; Operation determining means for determining whether or not the television receiving apparatus is receiving a television broadcast signal based on the transmission signal from the remote control device received by the receiving means; It is provided with.
  • the fifth aspect of the present invention is the television broadcast signal transmission system according to any one of the first to fourth aspects, wherein the power supply device is connected to one of the plurality of television terminals and is connected to the television terminal.
  • the power supply voltage is configured to be supplied to the transmission device via the transmission line.
  • the invention of the sixth aspect of the present application is characterized in that, in the television broadcast signal transmission system of any of the first to fourth aspects, the power supply device is built in the transmission device.
  • connection adapters are respectively disposed between the plurality of television terminals and the television receiver.
  • Each connection adapter includes an input terminal and an output terminal for receiving a TV broadcast signal from the TV terminal and outputting the signal to the TV receiver, and a power plug and a power outlet for taking in external power and supplying the TV receiver.
  • determination means for determining whether or not the television receiver connected to the connection adapter is receiving a television broadcast signal, and the television receiver receives the television broadcast signal using the determination means.
  • Control means is provided for outputting, from the input terminal to the television terminal, a permission signal for permitting the supply of the power supply voltage from the power supply device to the transmission device when it is determined that the medium is in the middle.
  • a permission signal is transmitted from at least one of a plurality of connection adapters connected to each television terminal to the power supply device that supplies the power supply voltage to the transmission device on the transmission line via the television terminal and the transmission line.
  • a power supply switching means is provided for stopping the supply of the power supply voltage to the transmission equipment when the power supply voltage is supplied to the transmission equipment and no permission signal is transmitted from each connection adapter.
  • the power supply device transmits to the transmission device. If one of the plurality of television receivers is in an operating state, the power supply voltage can be supplied from the power supply device to the transmission device.
  • the television broadcast signal transmission system of the present invention it is possible to minimize the operation period of the transmission device within a range in which it is possible to prevent the television broadcast signal from being transmitted during the operation of the television receiver.
  • the power consumption in the television broadcast signal transmission system can be reduced to the necessary minimum, and the energy consumption in the television broadcast signal transmission system can be reduced.
  • the power supply switching means generates a power supply voltage for driving the transmission device when a permission signal is transmitted from at least one of the connection adapters.
  • the operation of the power supply circuit is stopped, so that the power consumption of the power supply device can be minimized, and the TV broadcast signal Reduction of energy consumption in the transmission system can be further promoted.
  • the power supply voltage for driving the transmission device generated in the power supply device is connected to the output route from the power supply device to the transmission device.
  • a switch to be cut off may be provided, and when a permission signal is not transmitted from each connection adapter, the switch may be turned off.
  • the power supply circuit used to generate the power supply voltage in the power supply device operates even when the operation of the transmission device is stopped.
  • the external power supply is wasted due to the operation of the circuit.
  • the power supply switching means stops the operation of the power supply circuit.
  • the power consumption by the circuit can also be suppressed to the minimum necessary, and the energy consumption in the television broadcast signal transmission system can be more effectively reduced.
  • the determination means uses the current detection circuit to supply the current amount supplied from the power plug connected to the external power source to the television receiver via the power outlet. If the detected current amount is equal to or greater than a preset threshold value, the determination circuit is configured to determine that the television receiver is receiving a television broadcast signal.
  • the operating state of the television receiver connected to each television terminal is set to the amount of current flowing through the television receiver (and thus the power consumption of the television receiver). It is possible to make an accurate determination based on this, and to switch execution / stop of voltage supply from the power supply device to the transmission device.
  • the determination means receives the transmission signal from the remote control device that remotely operates the television receiver at the reception means, and the operation determination means Based on the received transmission signal from the remote control device, the television receiver is configured to determine whether or not the television broadcast signal is being received.
  • the television receiver when the television receiver is configured to operate according to the transmission signal from the remote control device, the television receiver is based on the transmission signal from the remote control device. It is possible to switch between execution and stop of voltage supply from the power supply device to the transmission device.
  • a power supply device is connected to one of the plurality of television terminals.
  • the device is built in the transmission equipment, in any TV broadcast signal transmission system, the permission signal output from each connection plug on the terminal side to each TV terminal is transmitted to the power supply device via the transmission line. Can do. Therefore, the present invention (the first to fourth aspects of the invention) can achieve the same effects as described above even when applied to any of the fifth and sixth aspects of the television broadcast signal transmission system.
  • Power supply plug 54 ... System power supply circuit 54a ... Main power supply circuit 56 ... DC pass filter, T3 ... output terminal, 58 ... filter circuit, 60 ... power supply switching circuit, 62 ... power circuit for internal circuit, 62a ... sub power supply circuit, 64 ... rectification flat Circuit, 66 ... Regulator, 68 ... Power switch, 72, 76, 86 ... LPF, 74 ... Amplifier circuit, 78, 82, 84 ... HPF, 80 ... Amplifier circuit, T4 ... Terrestrial wave input terminal, T5 ... Satellite wave input terminal , T6: Output terminal.
  • the television broadcast signal transmission system of this embodiment is a system for performing so-called home joint reception.
  • this system includes a VHF antenna 2 that receives TV broadcast radio waves in the VHF band, a UHF antenna 4 that receives TV broadcast radio waves in the UHF band, and a broadcasting satellite ( And a satellite receiving antenna 6 for receiving satellite broadcast waves distributed via a BS or a communication satellite (CS).
  • VHF antenna 2 that receives TV broadcast radio waves in the VHF band
  • UHF antenna 4 that receives TV broadcast radio waves in the UHF band
  • a broadcasting satellite And a satellite receiving antenna 6 for receiving satellite broadcast waves distributed via a BS or a communication satellite (CS).
  • CS communication satellite
  • the received signals from the VHF antenna 2 and the UHF antenna 4 are mixed by the mixer 8 and then input to the booster 10.
  • a reception signal from the satellite reception antenna 6 is also input to the booster 10.
  • the booster 10 amplifies the reception signals from the antennas 2, 4, 6 (in other words, the television broadcast signals of the respective broadcast channels) to a predetermined level.
  • the booster 10 is configured to operate by receiving a DC power supply voltage (for example, DC15V) transmitted from a power supply device 50 provided on the terminal side via a transmission line L made of a coaxial cable.
  • DC15V DC15V
  • the received signal amplified by the booster 10 is distributed by the distributor 12 (4 distribution in the figure), and each transmission line L connected to each distribution output terminal of the distributor 12 is used for each signal in the building. .. Are transmitted to television terminals 14, 16,... Installed in the 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 television receiver 28 is connected to the connectors of the television terminals 14, 16,... Via the connection adapter 30.
  • connection adapter 30 is provided for each television receiver 28 provided in each room. , 16,...
  • connection adapter 30 is provided between the television terminals 14, 16,... And the television receiver 28.
  • the connection adapter 30 is configured as shown in FIG. Specifically, the connection adapter 30 inputs a reception signal output from the connector of the television terminals 14, 16,... To the antenna input terminal of the television receiver 28. Further, the connection adapter 30 takes in commercial power from power outlets 24, 26,... Installed in each room in the building, and supplies the taken commercial power to the television receiver 28.
  • the connection adapter 30 is provided with an input terminal T1, an output terminal T2, a transmission line L1, a power plug 32, a power outlet 34, and a power line D1.
  • the input terminal T1 is a terminal for receiving a reception signal (television broadcast signal) connected to a connector of the television terminals 14, 16,... Via a coaxial cable.
  • the output terminal T2 is a terminal for outputting a reception signal taken from the television terminals 14, 16,... Via the input terminal T1 to the television receiver 28.
  • the transmission line L1 connects the terminals T1 and T2. The received signal is transmitted via the transmission line L1.
  • the power plug 32 is inserted into the power outlets 24, 26,.
  • a commercial power supply (for example, AC 100 V) is taken in through the power plug 32.
  • the power outlet 34 supplies commercial power input from the power plug 32 to the television receiver 28.
  • the power line D1 connects between the power plug 32 and the power outlet 34 to form a commercial power supply path.
  • the connection adapter 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, and a permission signal for permitting supply of a DC power supply voltage from the power supply device 50 to the booster 10 is generated and output from the input terminal T1 to the television terminals 14, 16,.
  • 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 permission signal.
  • the generated permission signal is output to the input terminal T1 via the low pass filter (LPF) 46.
  • LPF low pass filter
  • the permission signal generated by the signal generation circuit 44 has a different frequency for each connection adapter 30 provided in the television broadcast signal transmission system in order to prevent the power supply device 50 from recognizing the permission signal due to interference. Set to belt. For this reason, the signal generation circuit 44 is configured so that the type (frequency band) of the permission 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 input terminal T1 (in other words, through the LPF 46).
  • a high-pass filter (HPF) 36 is provided to prevent the permission signal input to the transmission line L1) from being transmitted to the output terminal T2.
  • a permission signal is output from the connection adapter 30 to the television terminals 14, 16,...
  • the television receiver 28 connected to the power outlet 34 is receiving a television broadcast signal.
  • the permission signal output from the connection adapter 30 is transmitted to the distributor 12 side through the transmission line L wired in the building.
  • the distributor 12 is formed with a signal path for passing a low-frequency permission signal between the distribution terminals.
  • the permission signal from the connection adapter 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 permission signal from each connection adapter 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 includes a power plug 52, a system power supply circuit 54, and an output terminal T3.
  • the power supply device 50 is configured to output the power supply voltage generated by the system power supply circuit 54 from the output terminal T3 to the television terminal 16 (and thus the transmission line L).
  • the power plug 52 can be connected to commercial power outlets 24, 26,... Installed in each room in the building.
  • the system power supply circuit 54 generates a power supply voltage (for example, DC 15V) for driving the booster 10 from the commercial power input through the power plug 52.
  • the output terminal T3 can be connected to the connector of the television terminal 16 via a coaxial cable.
  • a DC pass filter 56 that passes only the DC signal component and blocks other signal components is provided.
  • the pass frequency band is set to the frequency band of the permission signal, and the filter circuit 58 that selectively passes only the permission signal flowing through the transmission line L. One end is connected.
  • the permission signal output from the connection adapter 30 connected to the TV terminals 14, 16,... Is input to the power supply device 50 via the transmission line L, and is extracted by the filter circuit 58 in the power supply device 50. It will be.
  • the power supply switching circuit 60 includes a determination circuit and a drive circuit.
  • the determination circuit determines whether a permission signal is input via the filter circuit 58.
  • the drive circuit drives a power switch 68 including a relay or the like provided in the system power circuit 54.
  • the power supply switching circuit 60 turns on the power switch 68 via the drive circuit when the determination circuit determines that the permission signal is input. On the other hand, when the power supply switching circuit 60 determines that the permission signal is not input by the determination circuit, the power supply switch circuit 60 stops driving the power switch 68 by the drive circuit and turns off the power switch 68.
  • the power supply switching circuit 60 includes the determination circuit and the drive circuit. In order to operate the power supply switching circuit 60, it is necessary to supply power to the power supply switching circuit 60. In addition to the system power supply circuit 54, an internal circuit power supply circuit 62 is provided.
  • the internal circuit power supply circuit 62 is for generating a power supply voltage necessary for operating an internal circuit such as the power supply switching circuit 60, and rectifies commercial power input via the power plug 52. By smoothing, a power supply voltage (for example, DC 5V) for driving an internal circuit such as the power supply switching circuit 60 is generated.
  • a power supply voltage for example, DC 5V
  • the system power circuit 54 includes a rectifying / smoothing circuit 64 and a regulator 66 (see FIG. 3B).
  • the rectifying / smoothing circuit 64 takes in a commercial power supply via the power switch 68 including the above-described relay or the like, and generates a DC voltage by rectifying and smoothing the commercial power supply (for example, AC 100 V).
  • the regulator 66 includes a DC-DC converter that converts the DC voltage output from the rectifying and smoothing circuit 64 into a power supply voltage (for example, DC 15 V) for driving the booster 10. Therefore, in the television broadcast signal transmission system of the present embodiment, when a permission signal is output from at least one of the plurality of connection adapters 30 connected to the television terminals 14, 16,.
  • the system power supply circuit 54 operates by being input to the power supply device 50.
  • the operation of the system power supply circuit 54 generates a power supply voltage (for example, DC 15 V) for driving the booster 10, and this power supply voltage is supplied to the booster 10 via the transmission line L. 10 operates normally and amplifies the received signal. By amplification of the received signal, the received signal can be input to the terminal-side television receiver 28 at an appropriate level.
  • a power supply voltage for example, DC 15 V
  • the power consumption of the television receiver 28 is lower than that during normal operation.
  • the current amount detected by the current detection circuit 40 is smaller than a predetermined threshold value (current value) determined by the threshold voltage Vth, so that a permission signal is output on the transmission line L from all the connection adapters 30. It will not be done.
  • the television broadcast signal transmission system of the present embodiment it is possible to minimize the operation period of the booster 10 within a range in which the television broadcast signal can be prevented from being transmitted during the operation of the television receiver 28.
  • the power consumption in the television broadcast signal transmission system can be reduced to the necessary minimum, and the energy consumption in the television broadcast signal transmission system can be reduced.
  • the power supply switching circuit 60 in the power supply device 50 cuts off the commercial power input path from the power plug 52 to the system power supply circuit 54 when no permission signal is transmitted from all the connection adapters 30. The operation of the system power supply circuit 54 is stopped.
  • the amount of power consumed in the power supply device 50 is suppressed to the amount of power for permission signal determination supplied from the internal circuit power supply circuit 62 to the power supply switching circuit 60. Therefore, the television broadcast signal transmission system Reduction of energy consumption can be further promoted.
  • the output path of the power supply voltage from the system power supply circuit 54 to the output terminal T3 is cut off.
  • the system used to generate the power supply voltage of the booster 10 in the power supply device 50 the power supply circuit 54 is always operated.
  • the power supply device 50 when the permission signals are not output from all the connection adapters 30 (in other words, when all the television receivers 28 stop the reception operation), the power supply device 50 includes The input path of the commercial power source from the power plug 52 to the system power circuit 54 is cut off. For this reason, not only the booster 10 but also the power consumption in the power supply device 50 can be minimized, and the reduction of the energy consumption in the television broadcast signal transmission system can be further promoted.
  • the booster 10 corresponds to an example of a transmission device of the present invention
  • the detection unit 38, the current detection circuit 40, and the comparator 42 in the connection adapter 30 correspond to an example of a determination unit of the present invention
  • the comparator 42 corresponds to an example of the determination circuit of the present invention
  • the signal generation circuit 44 in the connection adapter 30 corresponds to an example of the control means of the present invention
  • the power supply switching circuit 60 in the power supply device 50 includes: This corresponds to an example of the power supply switching means of the present invention.
  • connection adapter 30 is provided with the detection unit 38 and the current detection circuit 40 for the current flowing through the power supply line D1 from the power plug 32 to the power outlet 34, and the current detected by the current detection circuit 40.
  • the television receiver 28 is operating when is equal to or greater than a predetermined threshold.
  • the operating state of the television receiver 28 may be determined based on a transmission signal from a remote control device that remotely operates the television receiver 28.
  • a remote control receiver 39 and an operation determination unit 41 are provided in the connection adapter 30 instead of the detection unit 38, the current detection circuit 40, and the comparator 42 of the above embodiment. Also good.
  • the remote control receiver 39 receives a transmission signal from the remote control device of the television receiver 28.
  • the operation determination unit 41 identifies an operation command (command) transmitted from the remote control device to the television reception device 28 based on the reception signal from the remote control reception unit 39, and the operation state of the television reception device 28 from the identified command. Determine. Then, even if the signal generation circuit 44 generates the permission signal according to the determination result by the operation determination unit 41, the same effect as in the above embodiment can be obtained.
  • the remote control receiving unit 39 corresponds to an example of a receiving unit of the present invention
  • the operation determining unit 41 corresponds to an example of an operation determining unit of the present invention.
  • the power supply device 50 is comprised separately from the booster 10, is connected to the terminal side (for example, television terminal 16) of the transmission line L, and is connected to the booster 10 via the transmission line L. It was described as supplying a power supply voltage.
  • the power supply device 50 is built in the booster 10, based on the permission signal transmitted from the connection adapter 30 on the terminal side as in the above embodiment.
  • the operation of the system power supply circuit 54 can be switched to reduce energy consumption in the television broadcast signal transmission system.
  • the booster 10 is provided with a terrestrial wave input terminal T4 and a satellite wave input terminal T5.
  • the terrestrial input terminal T4 is a terminal for taking in a reception signal (terrestrial reception signal) from the mixer 8.
  • the satellite wave input terminal T5 is a terminal for taking in a reception signal (satellite wave reception signal) from the satellite reception antenna 6.
  • the terrestrial reception signal input to the terrestrial input terminal T4 is taken into the booster 10 via the low pass filter (LPF) 72.
  • the LPF 72 blocks the passage of the satellite wave reception signal and selectively allows the ground wave reception signal to pass.
  • the terrestrial reception signal is amplified to a predetermined level by the amplifier circuit 74 and then output to the high pass filter (HPF) 84 through the LPF 76 configured in the same manner as the LPF 72.
  • the terrestrial reception signal input to the satellite wave input terminal T5 is taken into the booster 10 via the HPF 78.
  • the HPF 78 blocks the passage of the ground wave reception signal and selectively allows the satellite wave reception signal to pass.
  • the terrestrial reception signal is amplified to a predetermined level by the amplifier circuit 80 and then output to the HPF 84 via the LPF 82 configured similarly to the HPF 78.
  • the HPF 84 allows the reception signals amplified by the amplification circuits 74 and 80 to pass therethrough and prevents the permission signal transmitted from the terminal side via the transmission line L from passing.
  • the received signal that has passed through the HPF 84 is sent out on the transmission line L from the output terminal T6.
  • the booster 10 is provided with a power supply device 50 including a power plug 52, a main power supply circuit 54a, a sub power supply circuit 62a, and a power supply switching circuit 60.
  • a power supply voltage (for example, DC 15 V) generated by the main power supply circuit 54 a is directly supplied to the amplifier circuits 74 and 80.
  • a power supply voltage (for example, DC 5V) is supplied to the power supply switching circuit 60 from the sub power supply circuit 62a.
  • the output terminal T6 is connected to an LPF 86 for selectively allowing the permission signal input from the transmission line L to pass therethrough and preventing the reception signals output from the HPF 84 from passing therethrough.
  • the main power supply circuit 54a corresponds to the system power supply circuit 54 in the first embodiment
  • the sub power supply circuit 62a corresponds to the internal circuit power supply circuit 62 in the first embodiment. Therefore, even when the booster 10 includes the power supply device 50, when the permission signal is transmitted from at least one of the plurality of connection adapters 30 provided on the terminal side, the main power supply circuit 54a, As a result, the amplifier circuits 74 and 80 are normally operated. Conversely, when all the connection adapters 30 stop outputting the permission signals, the operations of the main power supply circuit 54a and the amplifier circuits 74 and 80 are stopped. Similarly to the above-described embodiment, it is possible to reduce the power consumption in the booster 10 and the power supply device 50.
  • the operation of the power supply device 50 that supplies power to the booster 10 is switched based on the permission signal output from each connection adapter 30.
  • a converter provided in the satellite receiving antenna 6 Even if the operation of the power supply device that supplies power to other transmission devices is switched based on the permission signal output from each connection adapter 30, the power consumption of the television broadcast signal transmission system is the same as in the above embodiment. The energy consumption in the television broadcast signal transmission system can be reduced.
  • connection adapter 30 has been described as taking in commercial power from a power outlet and supplying the fetched commercial power to the television receiver 28.
  • the connection adapter 30 may be an uninterruptible power supply or battery.
  • the television receiver 28 may be configured to receive power from an external power source different from the commercial power source.
  • connection adapter 30 only needs to be able to detect the operating state of the television receiver 28 from the power supply state to the television receiver 28.
  • the power supplied to the television receiver 28 is not a commercial power source such as an uninterruptible power supply. It may be a power source obtained from a power source.
  • the power supply device 50 has been described as operating by receiving power supply from a commercial power supply.
  • the power supply device 50 is also an external power supply different from a commercial power supply such as an uninterruptible power supply or a battery. It may operate by receiving power supply from.

Abstract

Disclosed is a television broadcast signal transmission system provided with a transmitter for television broadcast signal transmission and a power supply device which receives power supplied from an external power source, generates a supply voltage for driving the transmitter, and supplies said supply voltage to the transmitter. The television broadcast signal transmission system transmits a television broadcast signal to multiple television terminals via transmission wires. The power supply device is provided with a power supply switching means which supplies the supply voltage to the transmitter when a permission signal is transmitted from at least one of the connection adapters via the television terminals and the transmission wires, and which stops the supply of the supply voltage to the transmitter when the permission signal is not transmitted from the connection adapters.

Description

テレビ放送信号伝送システムTV broadcast signal transmission system 関連出願の相互参照Cross-reference of related applications
　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２０１０－０７８５４５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２０１０－０７８５４５号の全内容を本国際出願に援用する。 This international application claims priority based on Japanese Patent Application No. 2010-0785545 filed with the Japan Patent Office on March 30, 2010, and is based on Japanese Patent Application No. 2010-078545. The entire contents are incorporated into this international application.
　本発明は、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関する。 The present invention relates to a television broadcast signal transmission system that transmits television broadcast signals to a plurality of television terminals.
　従来、テレビ放送信号伝送システムには、通常、テレビ放送信号を伝送する伝送線上に、増幅器や周波数変換器等の伝送機器が設けられている。増幅器はテレビ放送信号を増幅する。周波数変換器はテレビ放送信号のチャンネル配列を変更する。 Conventionally, in a television broadcast signal transmission system, transmission devices such as an amplifier and a frequency converter are usually provided on a transmission line for transmitting a television broadcast signal. The amplifier amplifies the television broadcast signal. The frequency converter changes the channel arrangement of 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ように構成されている。 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. Is configured to do.
　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。 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、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）。この電源制御装置は、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る。一方、電源制御装置は、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。 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. It has been proposed to provide a power supply control device in a terminal device provided (see, for example, Patent Document 1). The power supply control device detects the operating state of the television receiving device, and causes the power supply device to supply power to the amplifier when the television receiving device is operating. On the other hand, the power supply control device stops the power supply from the power supply device to the amplifier when the operation of the television receiver is stopped.
　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における消費エネルギーを低減することができる。 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. Energy consumption in the transmission system can be reduced.
特開平６－２４５２１１号公報JP-A-6-245211
　しかし、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て、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、増幅器で増幅されたテレビ放送信号を分岐・分配して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適用することはできなかった。 However, the proposed power control device is incorporated in a terminal device between the power supply device to which the television receiver is connected or 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 device to the amplifier is executed / stopped by determining the operating state of the device, the television that branches and distributes the television broadcast signal amplified by the amplifier and transmits it to a plurality of television terminals It could not be applied to a broadcast signal transmission system.
　つまり、上記提案の電源制御装置は、電源装置に接続されるテレビ受信装置の動作状態に応じて電源装置から増幅器への電源供給を切り換えることから、テレビ受信装置が接続されるテレビ端子を複数備えたテレビ放送信号伝送システムに適用すると、電源装置が設けられないテレビ端子に接続されたテレビ受信装置の動作状態に関係なく、電源装置から増幅器への電源供給が切り換えられることになる。 In other words, the proposed power supply control device includes a plurality of TV terminals to which the television receiver is connected because the power supply is switched from the power supply device to the amplifier in accordance with the operating state of the television receiver connected to the power supply device. When applied to the television broadcast signal transmission system, the power supply from the power supply device to the amplifier is switched regardless of the operating state of the television receiver connected to the television terminal not provided with the power supply device.
　従って、複数のテレビ端子を備えたテレビ放送信号伝送システムでは、上記提案の電源制御装置を採用することができなかった。このため、複数のテレビ端子を備えたテレビ放送信号伝送システムでは、増幅器等の伝送機器の消費エネルギーの低減化を図ることができないという問題があった。 Therefore, in the television broadcast signal transmission system provided with a plurality of television terminals, the proposed power control device cannot be adopted. For this reason, in a television broadcast signal transmission system provided with a plurality of television terminals, there is a problem that it is not possible to reduce the energy consumption of transmission equipment such as amplifiers.
　本発明は、こうした問題に鑑みなされたものであり、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、各テレビ端子に接続されるテレビ受信装置の動作時にテレビ放送信号を伝送し得る範囲内で、伝送線上に設けられる伝送機器の動作期間を最小限に抑えることができるようにすることを目的とする。 The present invention has been made in view of these problems, and in a television broadcast signal transmission system that transmits a television broadcast signal to a plurality of television terminals, the television broadcast signal is transmitted when a television receiver connected to each television terminal operates. An object of the present invention is to minimize the operation period of transmission equipment provided on a transmission line within a possible range.
　かかる目的を達成するためになされた本願の第１局面の発明は、
　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、
　前記各テレビ端子からテレビ受信装置には、それぞれ、接続アダプタを介して前記テレビ放送信号を入力するよう構成すると共に、
　前記各接続アダプタには、
　前記テレビ端子に接続されて前記テレビ端子から前記テレビ放送信号を取り込むための入力端子と、
　該入力端子を介して前記テレビ端子から取り込んだテレビ放送信号を前記テレビ受信装置に出力するための出力端子と、
　外部電源を取り込むための電源プラグと、
　該電源プラグから入力された外部電源を前記テレビ受信装置に供給するための電源コンセントと、
　該電源コンセントから電源供給を受ける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する判定手段と、
　該判定手段にて、前記テレビ受信装置が前記テレビ放送信号を受信中であると判定されているとき、前記電源装置から前記伝送機器への前記電源電圧の供給を許可する許可信号を、前記入力端子から前記テレビ端子に出力させる制御手段と、
　を設け、
　前記電源装置には、前記接続アダプタの少なくとも一つから前記テレビ端子及び前記伝送線を介して前記許可信号が伝送されてくると、前記伝送機器へ前記電源電圧を供給し、前記各接続アダプタから前記許可信号が伝送されてこないときには、前記伝送機器への前記電源電圧の供給を停止する電源供給切換手段を設けたことを特徴とする。 The invention of the first aspect of the present application made in order to achieve such an object,
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 TV terminal is configured to input the TV broadcast signal to the TV receiver via a connection adapter, respectively.
Each connection adapter includes
An input terminal connected to the television terminal for capturing the television broadcast signal from the television terminal;
An output terminal for outputting a television broadcast signal captured from the television terminal via the input terminal to the television receiver;
A power plug to capture external power,
A power outlet for supplying external power input from the power plug to the television receiver;
Determining means for determining whether or not a television receiver receiving power supply from the power outlet is receiving the television broadcast signal;
When the determination means determines that the television receiver is receiving the television broadcast signal, the input signal is used to permit the supply of the power supply voltage from the power supply device to the transmission device. Control means for outputting from the terminal to the television terminal;
Provided,
When the permission signal is transmitted from at least one of the connection adapters to the power supply device via the television terminal and the transmission line, the power supply voltage is supplied to the transmission device, When the permission signal is not transmitted, power supply switching means for stopping the supply of the power supply voltage to the transmission device is provided.
　また、本願の第２局面の発明は、本願の第１局面のテレビ放送信号伝送システムにおいて、前記電源装置に設けられる前記電源供給切換手段は、
　前記接続アダプタの少なくとも一つから前記テレビ端子及び前記伝送線を介して前記許可信号が伝送されてくると、前記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する電源回路を動作させ、前記各接続アダプタから前記許可信号が伝送されてこないときには、当該電源回路の動作を停止させることにより、前記伝送機器への前記電源電圧の供給／停止を切り換えることを特徴とする。 The invention of the second aspect of the present application is the television broadcast signal transmission system of the first aspect of the present application, wherein the power supply switching means provided in the power supply device includes:
When the permission signal is transmitted from at least one of the connection adapters via the television terminal and the transmission line, a power supply circuit that receives power supply from the external power supply and generates a power supply voltage for driving the transmission device When the permission signal is not transmitted from each of the connection adapters, the operation of the power supply circuit is stopped to switch the supply / stop of the power supply voltage to the transmission device.
　また次に、本願の第３局面の発明は、第１局面又は第２局面のテレビ放送信号伝送システムにおいて、前記判定手段は、
　前記電源プラグから前記電源コンセントに至る外部電源の給電経路上に設けられ、該給電経路を流れる電流量を検出する電流検出回路と、
　該電流検出回路にて検出された電流量が予め設定された閾値以上であるとき、前記テレビ受信装置が前記テレビ放送信号を受信中であると判定する判定回路と、
　を備えたことを特徴とする。 Further, the invention of the third aspect of the present application is the television broadcast signal transmission system according to the first aspect or the second aspect, wherein the determining means includes:
A current detection circuit that is provided on a power supply path of an external power source from the power plug to the power outlet and detects the amount of current flowing through the power supply path;
A determination circuit that determines that the television receiver is receiving the television broadcast signal when the amount of current detected by the current detection circuit is equal to or greater than a preset threshold;
It is provided with.
　また、本願の第４局面の発明は、第１局面又は第２局面のテレビ放送信号伝送システムにおいて、前記判定手段は、
　前記テレビ受信装置を遠隔操作するリモートコントロール装置からの送信信号を受信する受信手段と、
　該受信手段にて受信された前記リモートコントロール装置からの送信信号に基づき、前記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する操作判定手段と、
　を備えたことを特徴とする。 Further, the invention of the fourth aspect of the present application is the television broadcast signal transmission system of the first aspect or the second aspect, wherein the determination means is
Receiving means for receiving a transmission signal from a remote control device for remotely operating the television receiver;
Operation determining means for determining whether or not the television receiving apparatus is receiving a television broadcast signal based on the transmission signal from the remote control device received by the receiving means;
It is provided with.
　また、本願の第５局面の発明は、第１～第４局面の何れかのテレビ放送信号伝送システムにおいて、前記電源装置は、前記複数のテレビ端子の一つに接続されて、当該テレビ端子から前記伝送線を介して前記伝送機器に電源電圧を供給するよう構成されていることを特徴とする。 The fifth aspect of the present invention is the television broadcast signal transmission system according to any one of the first to fourth aspects, wherein the power supply device is connected to one of the plurality of television terminals and is connected to the television terminal. The power supply voltage is configured to be supplied to the transmission device via the transmission line.
　また、本願の第６局面の発明は、第１～第４局面の何れかのテレビ放送信号伝送システムにおいて、前記電源装置は、前記伝送機器に内蔵されていることを特徴とする。 The invention of the sixth aspect of the present application is characterized in that, in the television broadcast signal transmission system of any of the first to fourth aspects, the power supply device is built in the transmission device.
　本願の第１局面のテレビ放送信号伝送システムにおいては、複数のテレビ端子とテレビ受信装置との間に、それぞれ、接続アダプタが配置される。
　そして、各接続アダプタには、テレビ端子からテレビ放送信号を受けてテレビ受信装置へ出力するための入力端子及び出力端子と、外部電源を取り込みテレビ受信装置へ供給するための電源プラグ及び電源コンセントとが設けられるだけでなく、当該接続アダプタに接続された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する判定手段と、この判定手段にてテレビ受信装置がテレビ放送信号を受信中であると判定されているときに、電源装置から伝送機器への電源電圧の供給を許可する許可信号を、入力端子からテレビ端子へと出力させる制御手段が設けられている。 In the television broadcast signal transmission system according to the first aspect of the present application, connection adapters are respectively disposed between the plurality of television terminals and the television receiver.
Each connection adapter includes an input terminal and an output terminal for receiving a TV broadcast signal from the TV terminal and outputting the signal to the TV receiver, and a power plug and a power outlet for taking in external power and supplying the TV receiver. Is provided, and determination means for determining whether or not the television receiver connected to the connection adapter is receiving a television broadcast signal, and the television receiver receives the television broadcast signal using the determination means. Control means is provided for outputting, from the input terminal to the television terminal, a permission signal for permitting the supply of the power supply voltage from the power supply device to the transmission device when it is determined that the medium is in the middle.
　また、伝送線上の伝送機器に電源電圧を供給する電源装置には、各テレビ端子に接続された複数の接続アダプタの少なくとも一つからテレビ端子及び伝送線を介して許可信号が伝送されてくると、伝送機器へ電源電圧を供給し、各接続アダプタから許可信号が伝送されてこないときには、伝送機器への電源電圧の供給を停止する電源供給切換手段が設けられている。 In addition, a permission signal is transmitted from at least one of a plurality of connection adapters connected to each television terminal to the power supply device that supplies the power supply voltage to the transmission device on the transmission line via the television terminal and the transmission line. A power supply switching means is provided for stopping the supply of the power supply voltage to the transmission equipment when the power supply voltage is supplied to the transmission equipment and no permission signal is transmitted from each connection adapter.
　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、接続アダプタを介して各テレビ端子からテレビ放送信号を受ける複数のテレビ受信装置の全てが動作停止状態であるとき、電源装置から伝送機器への電源電圧の供給を停止させ、複数のテレビ受信装置の一つでも動作状態であれば、電源装置から伝送機器へ電源電圧を供給させることができる。 For this reason, according to the television broadcast signal transmission system of the present invention, when all of the plurality of television receivers that receive the television broadcast signal from each television terminal via the connection adapter are in the operation stop state, the power supply device transmits to the transmission device. If one of the plurality of television receivers is in an operating state, the power supply voltage can be supplied from the power supply device to the transmission device.
　よって、本発明のテレビ放送信号伝送システムによれば、テレビ受信装置の動作時にテレビ放送信号が伝送されなくなるのを防止し得る範囲内で、伝送機器の動作期間を最小限に抑えることができるようになり、延いては、当該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、テレビ放送信号伝送システムにおける消費エネルギーを低減することができる。 Therefore, according to the television broadcast signal transmission system of the present invention, it is possible to minimize the operation period of the transmission device within a range in which it is possible to prevent the television broadcast signal from being transmitted during the operation of the television receiver. As a result, the power consumption in the television broadcast signal transmission system can be reduced to the necessary minimum, and the energy consumption in the television broadcast signal transmission system can be reduced.
　次に、本願の第２局面のテレビ放送信号伝送システムにおいて、電源供給切換手段は、接続アダプタの少なくとも一つから許可信号が伝送されてくると、伝送機器駆動用の電源電圧を生成する電源回路を動作させ、各接続アダプタから許可信号が伝送されてこないときには、電源回路の動作を停止させることから、電源装置での消費電力量も必要最小限に抑え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における消費エネルギーの低減をより促進することができる。 Next, in the television broadcast signal transmission system according to the second aspect of the present application, the power supply switching means generates a power supply voltage for driving the transmission device when a permission signal is transmitted from at least one of the connection adapters. When the permission signal is not transmitted from each connection adapter, the operation of the power supply circuit is stopped, so that the power consumption of the power supply device can be minimized, and the TV broadcast signal Reduction of energy consumption in the transmission system can be further promoted.
　つまり、電源装置から伝送機器への電源供給を停止させるには、例えば、電源装置内で生成した伝送機器駆動用の電源電圧を電源装置から伝送機器へ出力する出力経路上に、その経路を導通・遮断するスイッチを設け、各接続アダプタから許可信号が伝送されてこないときには、そのスイッチをオフ状態にするようにしてもよい。 In other words, in order to stop the power supply from the power supply device to the transmission device, for example, the power supply voltage for driving the transmission device generated in the power supply device is connected to the output route from the power supply device to the transmission device. A switch to be cut off may be provided, and when a permission signal is not transmitted from each connection adapter, the switch may be turned off.
　しかし、電源装置をこのように構成した場合には、伝送機器の動作を停止させたときにでも、電源装置内で電源電圧を生成するのに用いられる電源回路は動作することになり、その電源回路の動作によって外部電源が無駄に消費されることになる。 However, when the power supply device is configured in this way, the power supply circuit used to generate the power supply voltage in the power supply device operates even when the operation of the transmission device is stopped. The external power supply is wasted due to the operation of the circuit.
　これに対し、本願の第２局面のテレビ放送信号伝送システムでは、各接続アダプタから電源装置に許可信号が伝送されてこないときには、電源供給切換手段が、電源回路の動作を停止させることから、電源回路による電力消費についても必要最小限に抑えることができ、テレビ放送信号伝送システムにおける消費エネルギーをより効果的に低減することができるようになるのである。 On the other hand, in the television broadcast signal transmission system of the second aspect of the present application, when the permission signal is not transmitted from each connection adapter to the power supply device, the power supply switching means stops the operation of the power supply circuit. The power consumption by the circuit can also be suppressed to the minimum necessary, and the energy consumption in the television broadcast signal transmission system can be more effectively reduced.
　また次に、本願の第３局面のテレビ放送信号伝送システムにおいては、判定手段が、外部電源に接続される電源プラグから電源コンセントを介してテレビ受信装置に供給される電流量を電流検出回路にて検出し、その検出した電流量が予め設定された閾値以上であれば、判定回路にて、テレビ受信装置がテレビ放送信号を受信中であると判定するよう構成されている。 Next, in the television broadcast signal transmission system according to the third aspect of the present application, the determination means uses the current detection circuit to supply the current amount supplied from the power plug connected to the external power source to the television receiver via the power outlet. If the detected current amount is equal to or greater than a preset threshold value, the determination circuit is configured to determine that the television receiver is receiving a television broadcast signal.
　このため、第３局面のテレビ放送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の動作状態を、テレビ受信装置に流れる電流量（延いてはテレビ受信装置の消費電力）に基づき正確に判定して、電源装置から伝送機器への電圧供給の実行・停止を切り換えることができるようになる。 Therefore, according to the television broadcast signal transmission system of the third aspect, the operating state of the television receiver connected to each television terminal is set to the amount of current flowing through the television receiver (and thus the power consumption of the television receiver). It is possible to make an accurate determination based on this, and to switch execution / stop of voltage supply from the power supply device to the transmission device.
　一方、本願の第４局面のテレビ放送信号伝送システムにおいては、判定手段が、受信手段にて、テレビ受信装置を遠隔操作するリモートコントロール装置からの送信信号を受信し、操作判定手段にて、その受信されたリモートコントロール装置からの送信信号に基づき、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するよう構成されている。 On the other hand, in the television broadcast signal transmission system according to the fourth aspect of the present application, the determination means receives the transmission signal from the remote control device that remotely operates the television receiver at the reception means, and the operation determination means Based on the received transmission signal from the remote control device, the television receiver is configured to determine whether or not the television broadcast signal is being received.
　従って、第４局面のテレビ放送信号伝送システムによれば、テレビ受信装置がリモートコントロール装置からの送信信号に従い動作するよう構成されている場合に、そのリモートコントロール装置からの送信信号に基づきテレビ受信装置の動作状態を判定して、電源装置から伝送機器への電圧供給の実行・停止を切り換えることができるようになる。 Therefore, according to the television broadcast signal transmission system of the fourth aspect, when the television receiver is configured to operate according to the transmission signal from the remote control device, the television receiver is based on the transmission signal from the remote control device. It is possible to switch between execution and stop of voltage supply from the power supply device to the transmission device.
　また次に、本願の第５局面のテレビ放送信号伝送システムにおいては、電源装置が、複数のテレビ端子の一つに接続されており、本願の第６局面のテレビ放送信号伝送システムにおいては、電源装置が、伝送機器に内蔵されているが、いずれのテレビ放送信号伝送システムでも、端末側の各接続プラグから各テレビ端子に出力された許可信号を、伝送線を介して電源装置に伝送することができる。よって、本発明（第１～第４局面の発明）は、第５，第６局面のいずれのテレビ放送信号伝送システムに適用しても、上記と同様の効果を得ることができる。 Next, in the television broadcast signal transmission system of the fifth aspect of the present application, a power supply device is connected to one of the plurality of television terminals. In the television broadcast signal transmission system of the sixth aspect of the present application, Although the device is built in the transmission equipment, in any TV broadcast signal transmission system, the permission signal output from each connection plug on the terminal side to each TV terminal is transmitted to the power supply device via the transmission line. Can do. Therefore, the present invention (the first to fourth aspects of the invention) can achieve the same effects as described above even when applied to any of the fifth and sixth aspects of the television broadcast signal transmission system.
実施形態のテレビ放送信号伝送システム全体の構成を表す概略構成図である。It is a schematic structure figure showing the composition of the whole television broadcast signal transmission system of an embodiment. 実施形態の接続アダプタの構成を表すブロック図である。It is a block diagram showing the structure of the connection adapter of embodiment. 実施形態の電源装置の構成を表すブロック図である。It is a block diagram showing the structure of the power supply device of embodiment. 接続アダプタの変形例を表すブロック図である。It is a block diagram showing the modification of a connection adapter. 電源装置を内蔵したブースタの構成を表すブロック図である。It is a block diagram showing the structure of the booster which incorporated the power supply device.
　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、Ｌ…伝送線、１４，１６…テレビ端子、２４，２６…電源コンセント、２８…テレビ受信装置、３０…接続アダプタ、Ｔ１…入力端子、Ｔ２…出力端子、Ｌ１…伝送線、３２…電源プラグ、３４…電源コンセント、Ｄ１…電源線、３８…検出部、３９…リモコン受信部、４０…電流検出回路、４１…操作判定部、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…システム用電源回路、５４ａ…メイン電源回路、５６…直流通過フィルタ、Ｔ３…出力端子、５８…フィルタ回路、６０…電源切換回路、６２…内部回路用電源回路、６２ａ…サブ電源回路、６４…整流平滑回路、６６…レギュレータ、６８…電源スイッチ、７２，７６，８６…ＬＰＦ、７４…増幅回路、７８，８２，８４…ＨＰＦ、８０…増幅回路、Ｔ４…地上波入力端子、Ｔ５…衛星波入力端子、Ｔ６…出力端子。 2 ... VHF antenna, 4 ... UHF antenna, 6 ... satellite receiving antenna, 8 ... mixer, 10 ... booster, 12 ... distributor, L ... transmission line, 14, 16 ... TV terminal, 24, 26 ... power outlet, 28 DESCRIPTION OF SYMBOLS ... Television receiver, 30 ... Connection adapter, T1 ... Input terminal, T2 ... Output terminal, L1 ... Transmission line, 32 ... Power supply plug, 34 ... Power outlet, D1 ... Power supply line, 38 ... Detection part, 39 ... Remote control reception part DESCRIPTION OF SYMBOLS 40 ... Current detection circuit 41 ... Operation determination part 42 ... Comparator 44 ... Signal generation circuit 48 ... Power supply circuit 50 ... Power supply device 52 ... Power supply plug 54 ... System power supply circuit 54a ... Main power supply circuit 56 ... DC pass filter, T3 ... output terminal, 58 ... filter circuit, 60 ... power supply switching circuit, 62 ... power circuit for internal circuit, 62a ... sub power supply circuit, 64 ... rectification flat Circuit, 66 ... Regulator, 68 ... Power switch, 72, 76, 86 ... LPF, 74 ... Amplifier circuit, 78, 82, 84 ... HPF, 80 ... Amplifier circuit, T4 ... Terrestrial wave input terminal, T5 ... Satellite wave input terminal , T6: Output terminal.
　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システムである。このシステムは、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と、を備える。 Embodiments of the present invention will be described below with reference to the drawings.
The television broadcast signal transmission system of this embodiment is a system for performing so-called home joint reception. As shown in FIG. 1, this system includes a VHF antenna 2 that receives TV broadcast radio waves in the VHF band, a UHF antenna 4 that receives TV broadcast radio waves in the UHF band, and a broadcasting satellite ( And a satellite receiving antenna 6 for receiving satellite broadcast waves distributed via a BS or a communication satellite (CS).
　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に入力される。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 received signals from the VHF antenna 2 and the UHF antenna 4 are mixed by the mixer 8 and then input to the booster 10. A reception signal from the satellite reception antenna 6 is also input to the booster 10.
　ブースタ１０は、上記各アンテナ２，４，６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。ブースタ１０は、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の電源電圧（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 amplifies the reception signals from the antennas 2, 4, 6 (in other words, the television broadcast signals of the respective broadcast channels) to a predetermined level. The booster 10 is configured to operate by receiving a DC power supply voltage (for example, DC15V) transmitted from a power supply device 50 provided on the terminal side via 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（図では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。 Further, the received signal amplified by the booster 10 is distributed by the distributor 12 (4 distribution in the figure), and each transmission line L connected to each distribution output terminal of the distributor 12 is used for each signal in the building. .. Are transmitted to television terminals 14, 16,... Installed in the 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、接続アダプタ３０を介して行うように構成されている。 In the television broadcast signal transmission system of this embodiment, the television receiver 28 is connected to the connectors of the television terminals 14, 16,... Via the connection adapter 30.
　なお、図１には、テレビ受信装置２８及び接続アダプタ３０は一組だけ記載されているが、接続アダプタ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。 Although only one set of the television receiver 28 and the connection adapter 30 is shown in FIG. 1, the connection adapter 30 is provided for each television receiver 28 provided in each room. , 16,...
　次に、接続アダプタ３０は、テレビ端子１４，１６，…とテレビ受信装置２８との間に設けられる。この接続アダプタ３０は、図２に示すように構成されている。具体的には、接続アダプタ３０は、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、接続アダプタ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。 Next, the connection adapter 30 is provided between the television terminals 14, 16,... And the television receiver 28. The connection adapter 30 is configured as shown in FIG. Specifically, the connection adapter 30 inputs a reception signal output from the connector of the television terminals 14, 16,... To the antenna input terminal of the television receiver 28. Further, the connection adapter 30 takes in commercial power from power outlets 24, 26,... Installed in each room in the building, and supplies the taken commercial power to the television receiver 28.
　接続アダプタ３０には、入力端子Ｔ１と、出力端子Ｔ２と、伝送線Ｌ１と、電源プラグ３２と、電源コンセント３４と、電源線Ｄ１と、が設けられている。
　入力端子Ｔ１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）を取り込むための端子である。 The connection adapter 30 is provided with an input terminal T1, an output terminal T2, a transmission line L1, a power plug 32, a power outlet 34, and a power line D1.
The input terminal T1 is a terminal for receiving a reception signal (television broadcast signal) connected to a connector of the television terminals 14, 16,... Via a coaxial cable.
　出力端子Ｔ２は、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に出力するための端子である。
　伝送線Ｌ１は、各端子Ｔ１，Ｔ２間を接続する。受信信号は、伝送線Ｌ１を介して伝送される。 The output terminal T2 is a terminal for outputting a reception signal taken from the television terminals 14, 16,... Via the input terminal T1 to the television receiver 28.
The transmission line L1 connects the terminals T1 and T2. The received signal is transmitted via the transmission line L1.
　電源プラグ３２は、各部屋の電源コンセント２４，２６，…に差し込まれる。商用電源（例えばＡＣ１００Ｖ）は、電源プラグ３２を介して取り込まれる。
　電源コンセント３４は、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。 The power plug 32 is inserted into the power outlets 24, 26,. A commercial power supply (for example, AC 100 V) is taken in through the power plug 32.
The power outlet 34 supplies commercial power input from the power plug 32 to the television receiver 28.
　電源線Ｄ１は、電源プラグ３２と電源コンセント３４との間を接続して商用電源の給電経路を形成する。
　また、接続アダプタ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。 The power line D1 connects between the power plug 32 and the power outlet 34 to form a commercial power supply path.
Further, the connection adapter 30 includes a current detection circuit 40, a comparator 42, a signal generation circuit 44, and a power supply circuit 48.
　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。
　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 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.
　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への直流電源電圧の供給を許可する許可信号を生成し、入力端子Ｔ１からテレビ端子１４，１６，…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, and a permission signal for permitting supply of a DC power supply voltage from the power supply device 50 to the booster 10 is generated and output from the input terminal T1 to the television terminals 14, 16,.
　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）を許可信号として生成する。その生成された許可信号は、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 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 permission signal. The generated permission signal is output to the input terminal T1 via the low pass filter (LPF) 46.
　なお、信号生成回路４４にて生成される許可信号は、混信により電源装置５０側で許可信号を認識できなくなるのを抑制するため、当該テレビ放送信号伝送システムに設けられる接続アダプタ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、生成する許可信号の種別（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 permission signal generated by the signal generation circuit 44 has a different frequency for each connection adapter 30 provided in the television broadcast signal transmission system in order to prevent the power supply device 50 from recognizing the permission signal due to interference. Set to belt. For this reason, the signal generation circuit 44 is configured so that the type (frequency band) of the permission 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とを接続する伝送線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（換言すれば伝送線Ｌ１）に入力される許可信号が出力端子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 line 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 input terminal T1 (in other words, through the LPF 46). For example, a high-pass filter (HPF) 36 is provided to prevent the permission signal input to the transmission line L1) from being transmitted to the output terminal T2.
　このため、接続アダプタ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、許可信号が出力されることになる。 Therefore, a permission signal is output from the connection adapter 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、接続アダプタ３０から出力された許可信号は、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。分配器１２には、各分配端子間で低周波の許可信号を通過させるための信号経路が形成されている。 And the permission signal output from the connection adapter 30 is transmitted to the distributor 12 side through the transmission line L wired in the building. The distributor 12 is formed with a signal path for passing a low-frequency permission signal between the distribution terminals.
　従って、テレビ端子１４，１６，…に接続された接続アダプタ３０からの許可信号は、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には各接続アダプタ３０からの許可信号が伝送されることになる。 Therefore, the permission signal from the connection adapter 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 permission signal from each connection adapter 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３Ａに示すように、電源装置５０は、電源プラグ５２と、システム用電源回路５４と、出力端子Ｔ３とを備える。電源装置５０は、システム用電源回路５４にて生成された電源電圧を出力端子Ｔ３からテレビ端子１６（延いては伝送線Ｌ）へと出力するように構成されている。 Next, the power supply device 50 is connected to the connector of the television terminal 16 via a coaxial cable.
As shown in FIG. 3A, the power supply device 50 includes a power plug 52, a system power supply circuit 54, and an output terminal T3. The power supply device 50 is configured to output the power supply voltage generated by the system power supply circuit 54 from the output terminal T3 to the television terminal 16 (and thus the transmission line L).
　電源プラグ５２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，…に接続されることが可能である。
　システム用電源回路５４は、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駆動用の電源電圧（例えばＤＣ１５Ｖ）を生成する。 The power plug 52 can be connected to commercial power outlets 24, 26,... Installed in each room in the building.
The system power supply circuit 54 generates a power supply voltage (for example, DC 15V) for driving the booster 10 from the commercial power input through the power plug 52.
　出力端子Ｔ３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ることが可能である。
　また、出力端子Ｔ３とシステム用電源回路５４との間の電源電圧の出力経路上には、直流信号成分のみを通過させ、他の信号成分を遮断する直流通過フィルタ５６が設けられている。この直流通過フィルタ５６と出力端子Ｔ３との間の出力経路には、通過周波数帯域が許可信号の周波数帯域に設定されて、伝送線Ｌを流れる許可信号のみを選択的に通過させるフィルタ回路５８の一端が接続されている。 The output terminal T3 can be connected to the connector of the television terminal 16 via a coaxial cable.
In addition, on the output path of the power supply voltage between the output terminal T3 and the system power supply circuit 54, a DC pass filter 56 that passes only the DC signal component and blocks other signal components is provided. In the output path between the DC pass filter 56 and the output terminal T3, the pass frequency band is set to the frequency band of the permission signal, and the filter circuit 58 that selectively passes only the permission signal flowing through the transmission line L. One end is connected.
　このため、テレビ端子１４，１６，…に接続された接続アダプタ３０から出力された許可信号は、伝送線Ｌを介して電源装置５０に入力され、電源装置５０内でフィルタ回路５８により抽出されることになる。 Therefore, the permission signal output from the connection adapter 30 connected to the TV terminals 14, 16,... Is input to the power supply device 50 via the transmission line L, and is extracted by the filter circuit 58 in the power supply device 50. It will be.
　また、電源装置５０内でフィルタ回路５８により抽出された許可信号は、電源切換回路６０に入力される。
　電源切換回路６０は、判定回路と、駆動回路とから構成されている。 Further, the permission signal extracted by the filter circuit 58 in the power supply device 50 is input to the power supply switching circuit 60.
The power supply switching circuit 60 includes a determination circuit and a drive circuit.
　判定回路は、フィルタ回路５８を介して許可信号が入力されているか否かを判定する。
　駆動回路は、システム用電源回路５４内に設けられたリレー等からなる電源スイッチ６８を駆動する。 The determination circuit determines whether a permission signal is input via the filter circuit 58.
The drive circuit drives a power switch 68 including a relay or the like provided in the system power circuit 54.
　電源切換回路６０は、判定回路にて許可信号が入力されていると判定すると、駆動回路を介して電源スイッチ６８をオンさせる。一方、電源切換回路６０は、判定回路にて許可信号は入力されていないと判定すると、駆動回路による電源スイッチ６８の駆動を停止して、電源スイッチ６８をオフさせる。 The power supply switching circuit 60 turns on the power switch 68 via the drive circuit when the determination circuit determines that the permission signal is input. On the other hand, when the power supply switching circuit 60 determines that the permission signal is not input by the determination circuit, the power supply switch circuit 60 stops driving the power switch 68 by the drive circuit and turns off the power switch 68.
　また、このように、電源切換回路６０は、判定回路や駆動回路から構成されており、電源切換回路６０を動作させるには、電源切換回路６０に電源供給を行う必要があるため、電源装置５０には、システム用電源回路５４とは別に、内部回路用電源回路６２が設けられている。 As described above, the power supply switching circuit 60 includes the determination circuit and the drive circuit. In order to operate the power supply switching circuit 60, it is necessary to supply power to the power supply switching circuit 60. In addition to the system power supply circuit 54, an internal circuit power supply circuit 62 is provided.
　なお、内部回路用電源回路６２は、電源切換回路６０等の内部回路を動作させるのに必要な電源電圧を生成するためのものであり、電源プラグ５２を介して入力される商用電源を整流・平滑することで、電源切換回路６０等の内部回路駆動用の電源電圧（例えば、ＤＣ５Ｖ）を生成する。 Note that the internal circuit power supply circuit 62 is for generating a power supply voltage necessary for operating an internal circuit such as the power supply switching circuit 60, and rectifies commercial power input via the power plug 52. By smoothing, a power supply voltage (for example, DC 5V) for driving an internal circuit such as the power supply switching circuit 60 is generated.
　また、システム用電源回路５４は、整流平滑回路６４と、レギュレータ６６とから構成されている（図３（ｂ）Ｂ参照）。
　整流平滑回路６４は、上述したリレー等からなる電源スイッチ６８を介して、商用電源を取り込み、その商用電源（例えばＡＣ１００Ｖ）を整流・平滑することで直流電圧を生成する。 The system power circuit 54 includes a rectifying / smoothing circuit 64 and a regulator 66 (see FIG. 3B).
The rectifying / smoothing circuit 64 takes in a commercial power supply via the power switch 68 including the above-described relay or the like, and generates a DC voltage by rectifying and smoothing the commercial power supply (for example, AC 100 V).
　レギュレータ６６は、整流平滑回路６４から出力される直流電圧をブースタ１０駆動用の電源電圧（例えば、ＤＣ１５Ｖ）に変換するＤＣ－ＤＣコンバータ等から構成される。
　従って、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，…に接続された複数の接続アダプタ３０の少なくとも一つから許可信号が出力されている場合には、その許可信号が電源装置５０に入力されて、システム用電源回路５４が動作することになる。 The regulator 66 includes a DC-DC converter that converts the DC voltage output from the rectifying and smoothing circuit 64 into a power supply voltage (for example, DC 15 V) for driving the booster 10.
Therefore, in the television broadcast signal transmission system of the present embodiment, when a permission signal is output from at least one of the plurality of connection adapters 30 connected to the television terminals 14, 16,. The system power supply circuit 54 operates by being input to the power supply device 50.
　そして、この場合、システム用電源回路５４の動作により、ブースタ１０駆動用の電源電圧（例えば、ＤＣ１５Ｖ）が生成され、この電源電圧が伝送線Ｌを介してブースタ１０に供給されることから、ブースタ１０が通常動作し、受信信号を増幅する。受信信号の増幅により、端末側のテレビ受信装置２８には受信信号を適正レベルで入力することができるようになる。 In this case, the operation of the system power supply circuit 54 generates a power supply voltage (for example, DC 15 V) for driving the booster 10, and this power supply voltage is supplied to the booster 10 via the transmission line L. 10 operates normally and amplifies the received signal. By amplification of the received signal, the received signal can be input to the terminal-side television receiver 28 at an appropriate level.
　一方、接続アダプタ３０を介して各テレビ端子１４，１６，…からテレビ放送信号を受ける複数のテレビ受信装置２８の全てが動作停止状態であるときには、テレビ受信装置２８の消費電力が通常動作時に比べて著しく低下し、電流検出回路４０にて検出される電流量が閾値電圧Ｖｔｈで決まる所定の閾値（電流値）よりも少なくなるので、全ての接続アダプタ３０から伝送線Ｌ上に許可信号が出力されなくなる。 On the other hand, when all of the plurality of television receivers 28 that receive television broadcast signals from the television terminals 14, 16,... Via the connection adapter 30 are in an operation stop state, the power consumption of the television receiver 28 is lower than that during normal operation. The current amount detected by the current detection circuit 40 is smaller than a predetermined threshold value (current value) determined by the threshold voltage Vth, so that a permission signal is output on the transmission line L from all the connection adapters 30. It will not be done.
　そして、このように全ての接続アダプタ３０から許可信号が出力されなくなれば、電源装置５０内の電源切換回路６０にてその旨が検出されて、システム用電源回路５４の動作が停止される。 If the permission signals are not output from all the connection adapters 30 as described above, this is detected by the power supply switching circuit 60 in the power supply device 50, and the operation of the system power supply circuit 54 is stopped.
　よって、本実施形態のテレビ放送信号伝送システムによれば、テレビ受信装置２８の動作時にテレビ放送信号が伝送されなくなるのを防止し得る範囲内で、ブースタ１０の動作期間を最小限に抑えることができるようになり、延いては、当該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、テレビ放送信号伝送システムにおける消費エネルギーを低減することができる。 Therefore, according to the television broadcast signal transmission system of the present embodiment, it is possible to minimize the operation period of the booster 10 within a range in which the television broadcast signal can be prevented from being transmitted during the operation of the television receiver 28. As a result, the power consumption in the television broadcast signal transmission system can be reduced to the necessary minimum, and the energy consumption in the television broadcast signal transmission system can be reduced.
　また、電源装置５０内の電源切換回路６０は、全ての接続アダプタ３０から許可信号が送信されてこなくなると、電源プラグ５２からシステム用電源回路５４への商用電源の入力経路を遮断することにより、システム用電源回路５４の動作を停止させる。 Further, the power supply switching circuit 60 in the power supply device 50 cuts off the commercial power input path from the power plug 52 to the system power supply circuit 54 when no permission signal is transmitted from all the connection adapters 30. The operation of the system power supply circuit 54 is stopped.
　そして、この状態では、電源装置５０内での消費電力量が、内部回路用電源回路６２から電源切換回路６０に供給される許可信号判定用の電力量に抑えられることから、テレビ放送信号伝送システムにおける消費エネルギーの低減をより促進することができる。 In this state, the amount of power consumed in the power supply device 50 is suppressed to the amount of power for permission signal determination supplied from the internal circuit power supply circuit 62 to the power supply switching circuit 60. Therefore, the television broadcast signal transmission system Reduction of energy consumption can be further promoted.
　全ての接続アダプタ３０から許可信号が送信されていないときに、電源装置５０からブースタ１０への電源供給を停止させるには、システム用電源回路５４から出力端子Ｔ３に至る電源電圧の出力経路を遮断するようにしてもよい一方、このようにすると、ブースタ１０の動作を停止させてそのブースタ１０による消費電力は低減できるものの、電源装置５０内でブースタ１０の電源電圧を生成するのに用いられるシステム用電源回路５４は常時動作することになる。 In order to stop the power supply from the power supply device 50 to the booster 10 when permission signals are not transmitted from all the connection adapters 30, the output path of the power supply voltage from the system power supply circuit 54 to the output terminal T3 is cut off. On the other hand, in this way, although the operation of the booster 10 can be stopped and the power consumption by the booster 10 can be reduced, the system used to generate the power supply voltage of the booster 10 in the power supply device 50. The power supply circuit 54 is always operated.
　しかし、本実施形態では、全ての接続アダプタ３０から許可信号が出力されていないとき（換言すれば、全てのテレビ受信装置２８が受信動作を停止しているとき）には、電源装置５０内で、電源プラグ５２からシステム用電源回路５４への商用電源の入力経路を遮断するようにされている。このため、ブースタ１０だけでなく、電源装置５０内での消費電力についても必要最小限に抑え、テレビ放送信号伝送システムにおける消費エネルギーの低減をより促進することができるようになるのである。 However, in the present embodiment, when the permission signals are not output from all the connection adapters 30 (in other words, when all the television receivers 28 stop the reception operation), the power supply device 50 includes The input path of the commercial power source from the power plug 52 to the system power circuit 54 is cut off. For this reason, not only the booster 10 but also the power consumption in the power supply device 50 can be minimized, and the reduction of the energy consumption in the television broadcast signal transmission system can be further promoted.
　以下、用語の対応関係について説明する。
　本実施形態においては、ブースタ１０が、本発明の伝送機器の一例に相当し、接続アダプタ３０内の検出部３８、電流検出回路４０及びコンパレータ４２は、本発明の判定手段の一例に相当し、このうちコンパレータ４２は、本発明の判定回路の一例に相当し、接続アダプタ３０内の信号生成回路４４は、本発明の制御手段の一例に相当し、電源装置５０内の電源切換回路６０は、本発明の電源供給切換手段の一例に相当する。 Hereinafter, the correspondence of terms will be described.
In the present embodiment, the booster 10 corresponds to an example of a transmission device of the present invention, the detection unit 38, the current detection circuit 40, and the comparator 42 in the connection adapter 30 correspond to an example of a determination unit of the present invention, Of these, the comparator 42 corresponds to an example of the determination circuit of the present invention, the signal generation circuit 44 in the connection adapter 30 corresponds to an example of the control means of the present invention, and the power supply switching circuit 60 in the power supply device 50 includes: This corresponds to an example of the power supply switching means 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。
（変形例１）
　例えば、上記実施形態では、接続アダプタ３０に、電源プラグ３２から電源コンセント３４に至る電源線Ｄ１に流れる電流を検出部３８及び電流検出回路４０を設け、この電流検出回路４０にて検出された電流が所定の閾値以上であるときに、テレビ受信装置２８が動作していると判定するものとして説明した。 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.
(Modification 1)
For example, in the above embodiment, the connection adapter 30 is provided with the detection unit 38 and the current detection circuit 40 for the current flowing through the power supply line D1 from the power plug 32 to the power outlet 34, and the current detected by the current detection circuit 40. In the above description, it is determined that the television receiver 28 is operating when is equal to or greater than a predetermined threshold.
　しかし、判定手段としての機能を実現するには、必ずしもテレビ受信装置２８での消費電流（若しくは消費電圧又は消費電力）を検出する必要はない。例えば、テレビ受信装置２８を遠隔操作するリモートコントロール装置からの送信信号に基づき、テレビ受信装置２８の動作状態を判定するようにしてもよい。 However, it is not always necessary to detect current consumption (or voltage consumption or power consumption) in the television receiver 28 in order to realize the function as the determination means. For example, the operating state of the television receiver 28 may be determined based on a transmission signal from a remote control device that remotely operates the television receiver 28.
　すなわち、図４に例示するように、上記実施形態の検出部３８、電流検出回路４０、コンパレータ４２に代えて、接続アダプタ３０内に、リモコン受信部３９と、操作判定部４１と、を設けても良い。リモコン受信部３９は、テレビ受信装置２８のリモートコントロール装置からの送信信号を受信する。操作判定部４１は、リモコン受信部３９からの受信信号に基づき、リモートコントロール装置からテレビ受信装置２８に送信された操作指令（コマンド）を識別し、その識別したコマンドからテレビ受信装置２８の動作状態を判定する。そして、この操作判定部４１による判定結果に従い、信号生成回路４４が許可信号を生成するようにしても、上記実施形態と同様の効果を得ることができる。 That is, as illustrated in FIG. 4, a remote control receiver 39 and an operation determination unit 41 are provided in the connection adapter 30 instead of the detection unit 38, the current detection circuit 40, and the comparator 42 of the above embodiment. Also good. The remote control receiver 39 receives a transmission signal from the remote control device of the television receiver 28. The operation determination unit 41 identifies an operation command (command) transmitted from the remote control device to the television reception device 28 based on the reception signal from the remote control reception unit 39, and the operation state of the television reception device 28 from the identified command. Determine. Then, even if the signal generation circuit 44 generates the permission signal according to the determination result by the operation determination unit 41, the same effect as in the above embodiment can be obtained.
　なお、リモコン受信部３９は、本発明の受信手段の一例に相当し、操作判定部４１は、本発明の操作判定手段の一例に相当する。
（変形例２）
　また、上記実施形態では、電源装置５０は、ブースタ１０とは別体で構成されており、伝送線Ｌの端末側（例えばテレビ端子１６）に接続されて、伝送線Ｌを介してブースタ１０に電源電圧を供給するものとして説明した。一方、例えば、図５に示すように、ブースタ１０に電源装置５０が内蔵されている場合であっても、上記実施形態と同様に、端末側の接続アダプタ３０から送信されてくる許可信号に基づきシステム用電源回路５４の動作を切り換え、テレビ放送信号伝送システムにおける消費エネルギーを低減することができる。 The remote control receiving unit 39 corresponds to an example of a receiving unit of the present invention, and the operation determining unit 41 corresponds to an example of an operation determining unit of the present invention.
(Modification 2)
Moreover, in the said embodiment, the power supply device 50 is comprised separately from the booster 10, is connected to the terminal side (for example, television terminal 16) of the transmission line L, and is connected to the booster 10 via the transmission line L. It was described as supplying a power supply voltage. On the other hand, for example, as shown in FIG. 5, even when the power supply device 50 is built in the booster 10, based on the permission signal transmitted from the connection adapter 30 on the terminal side as in the above embodiment. The operation of the system power supply circuit 54 can be switched to reduce energy consumption in the television broadcast signal transmission system.
　すなわち、ブースタ１０には、地上波入力端子Ｔ４、及び衛星波入力端子Ｔ５が備えられている。地上波入力端子Ｔ４は、混合器８から受信信号（地上波受信信号）を取り込むための端子である。衛星波入力端子Ｔ５は、衛星受信アンテナ６から受信信号（衛星波受信信号）を取り込むための端子である。 That is, the booster 10 is provided with a terrestrial wave input terminal T4 and a satellite wave input terminal T5. The terrestrial input terminal T4 is a terminal for taking in a reception signal (terrestrial reception signal) from the mixer 8. The satellite wave input terminal T5 is a terminal for taking in a reception signal (satellite wave reception signal) from the satellite reception antenna 6.
　そして、地上波入力端子Ｔ４に入力された地上波受信信号は、ローパスフィルタ（ＬＰＦ）７２を介して、ブースタ１０内に取り込まれる。ＬＰＦ７２は、衛星波受信信号の通過を阻止し、地上波受信信号を選択的に通過させる。そして、地上波受信信号は、増幅回路７４にて所定レベルまで増幅された後、ＬＰＦ７２と同様に構成されたＬＰＦ７６を介して、ハイパスフィルタ（ＨＰＦ）８４へ出力される。 The terrestrial reception signal input to the terrestrial input terminal T4 is taken into the booster 10 via the low pass filter (LPF) 72. The LPF 72 blocks the passage of the satellite wave reception signal and selectively allows the ground wave reception signal to pass. The terrestrial reception signal is amplified to a predetermined level by the amplifier circuit 74 and then output to the high pass filter (HPF) 84 through the LPF 76 configured in the same manner as the LPF 72.
　また、衛星波入力端子Ｔ５に入力された地上波受信信号は、ＨＰＦ７８を介して、ブースタ１０内に取り込まれる。ＨＰＦ７８は、地上波受信信号の通過を阻止し、衛星波受信信号を選択的に通過させる。そして、地上波受信信号は、増幅回路８０にて所定レベルまで増幅された後、ＨＰＦ７８と同様に構成されたＬＰＦ８２を介してＨＰＦ８４へ出力される。 The terrestrial reception signal input to the satellite wave input terminal T5 is taken into the booster 10 via the HPF 78. The HPF 78 blocks the passage of the ground wave reception signal and selectively allows the satellite wave reception signal to pass. The terrestrial reception signal is amplified to a predetermined level by the amplifier circuit 80 and then output to the HPF 84 via the LPF 82 configured similarly to the HPF 78.
　ＨＰＦ８４は、増幅回路７４、８０にて増幅された各受信信号を通過させ、伝送線Ｌを介して端末側から伝送されてくる許可信号の通過を阻止する。ＨＰＦ８４を通過した受信信号は、出力端子Ｔ６から伝送線Ｌ上に送出される。 The HPF 84 allows the reception signals amplified by the amplification circuits 74 and 80 to pass therethrough and prevents the permission signal transmitted from the terminal side via the transmission line L from passing. The received signal that has passed through the HPF 84 is sent out on the transmission line L from the output terminal T6.
　また、ブースタ１０には、電源プラグ５２、メイン電源回路５４ａ、サブ電源回路６２ａ、電源切換回路６０からなる電源装置５０が設けられている。メイン電源回路５４ａにて生成された電源電圧（例えば、ＤＣ１５Ｖ）は、増幅回路７４、８０に直接供給される。電源切換回路６０には、サブ電源回路６２ａから電源電圧（例えば、ＤＣ５Ｖ）が供給される。 Further, the booster 10 is provided with a power supply device 50 including a power plug 52, a main power supply circuit 54a, a sub power supply circuit 62a, and a power supply switching circuit 60. A power supply voltage (for example, DC 15 V) generated by the main power supply circuit 54 a is directly supplied to the amplifier circuits 74 and 80. A power supply voltage (for example, DC 5V) is supplied to the power supply switching circuit 60 from the sub power supply circuit 62a.
　そして、出力端子Ｔ６には、伝送線Ｌから入力された許可信号を選択的に通過させ、ＨＰＦ８４から出力された上記各受信信号の通過を阻止するためのＬＰＦ８６が接続されている。 The output terminal T6 is connected to an LPF 86 for selectively allowing the permission signal input from the transmission line L to pass therethrough and preventing the reception signals output from the HPF 84 from passing therethrough.
　なお、メイン電源回路５４ａは、第１実施形態におけるシステム用電源回路５４に相当し、サブ電源回路６２ａは、第１実施形態における内部回路用電源回路６２に相当する。
　従って、ブースタ１０内に電源装置５０を内蔵するようにしても、端末側に設けられた複数の接続アダプタ３０の少なくとも一つから許可信号が伝送されてきている場合には、メイン電源回路５４ａ、延いては、増幅回路７４、８０を通常動作させ、逆に、全ての接続アダプタ３０が許可信号の出力を停止している場合には、メイン電源回路５４ａ及び増幅回路７４、８０の動作を停止させることができ、上記実施形態と同様、ブースタ１０や電源装置５０での消費電力量を低減することが可能となる。 The main power supply circuit 54a corresponds to the system power supply circuit 54 in the first embodiment, and the sub power supply circuit 62a corresponds to the internal circuit power supply circuit 62 in the first embodiment.
Therefore, even when the booster 10 includes the power supply device 50, when the permission signal is transmitted from at least one of the plurality of connection adapters 30 provided on the terminal side, the main power supply circuit 54a, As a result, the amplifier circuits 74 and 80 are normally operated. Conversely, when all the connection adapters 30 stop outputting the permission signals, the operations of the main power supply circuit 54a and the amplifier circuits 74 and 80 are stopped. Similarly to the above-described embodiment, it is possible to reduce the power consumption in the booster 10 and the power supply device 50.
　なお、上記実施形態では、各接続アダプタ３０から出力される許可信号に基づき、ブースタ１０に電源供給を行う電源装置５０の動作を切り換えるものとして説明したが、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の動作を、各接続アダプタ３０から出力される許可信号に基づき切り換えるようにしても、上記実施形態と同様、テレビ放送信号伝送システムの消費電力量を抑えて、テレビ放送信号伝送システムにおける消費エネルギーを低減することができる。 In the above embodiment, the operation of the power supply device 50 that supplies power to the booster 10 is switched based on the permission signal output from each connection adapter 30. However, for example, a converter provided in the satellite receiving antenna 6 Even if the operation of the power supply device that supplies power to other transmission devices is switched based on the permission signal output from each connection adapter 30, the power consumption of the television broadcast signal transmission system is the same as in the above embodiment. The energy consumption in the television broadcast signal transmission system can be reduced.
　また、上記実施形態では、接続アダプタ３０は、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、接続アダプタ３０は、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 connection adapter 30 has been described as taking in commercial power from a power outlet and supplying the fetched commercial power to the television receiver 28. However, the connection adapter 30 may be an uninterruptible power supply or battery. Alternatively, the television receiver 28 may be configured to receive power from an external power source different from the commercial power source.
　つまり、接続アダプタ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、テレビ受信装置２８に供給する電源については、無停電電源装置等の商用電源以外の電源供給源から得られる電源であってもよい。 That is, the connection adapter 30 only needs to be able to detect the operating state of the television receiver 28 from the power supply state to the television receiver 28. The power supplied to the television receiver 28 is not a commercial power source such as an uninterruptible power supply. It may be a power source obtained from a power source.
　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、この電源装置５０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動作するものであってもよい。 In the above embodiment, the power supply device 50 has been described as operating by receiving power supply from a commercial power supply. However, the power supply device 50 is also an external power supply different from a commercial power supply such as an uninterruptible power supply or a battery. It may operate by receiving power supply from.

Claims (6)

  1. 　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、
    　前記各テレビ端子からテレビ受信装置には、それぞれ、接続アダプタを介して前記テレビ放送信号を入力するよう構成すると共に、
    　前記各接続アダプタには、
    　前記テレビ端子に接続されて前記テレビ端子から前記テレビ放送信号を取り込むための入力端子と、
    　該入力端子を介して前記テレビ端子から取り込んだテレビ放送信号を前記テレビ受信装置に出力するための出力端子と、
    　外部電源を取り込むための電源プラグと、
    　該電源プラグから入力された外部電源を前記テレビ受信装置に供給するための電源コンセントと、
    　該電源コンセントから電源供給を受ける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する判定手段と、
    　該判定手段にて、前記テレビ受信装置が前記テレビ放送信号を受信中であると判定されているとき、前記電源装置から前記伝送機器への前記電源電圧の供給を許可する許可信号を、前記入力端子から前記テレビ端子に出力させる制御手段と、
    　を設け、
    　前記電源装置には、前記接続アダプタの少なくとも一つから前記テレビ端子及び前記伝送線を介して前記許可信号が伝送されてくると、前記伝送機器へ前記電源電圧を供給し、前記各接続アダプタから前記許可信号が伝送されてこないときには、前記伝送機器への前記電源電圧の供給を停止する電源供給切換手段を設けた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 TV terminal is configured to input the TV broadcast signal to the TV receiver via a connection adapter, respectively.
    Each connection adapter includes
    An input terminal connected to the television terminal for capturing the television broadcast signal from the television terminal;
    An output terminal for outputting a television broadcast signal captured from the television terminal via the input terminal to the television receiver;
    A power plug to capture external power,
    A power outlet for supplying external power input from the power plug to the television receiver;
    Determining means for determining whether or not the television receiver receiving power supply from the power outlet is receiving the television broadcast signal;
    When the determination means determines that the television receiver is receiving the television broadcast signal, the input signal is a permission signal that permits the supply of the power supply voltage from the power supply device to the transmission device. Control means for outputting from a terminal to the television terminal;
    Provided,
    When the permission signal is transmitted from at least one of the connection adapters to the power supply device via the television terminal and the transmission line, the power supply voltage is supplied to the transmission device from each connection adapter. A television broadcast signal transmission system comprising power supply switching means for stopping supply of the power supply voltage to the transmission equipment when the permission signal is not transmitted.
  2. 　前記電源装置において、前記電源供給切換手段は、
    　前記接続アダプタの少なくとも一つから前記テレビ端子及び前記伝送線を介して前記許可信号が伝送されてくると、前記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する電源回路を動作させ、前記各接続アダプタから前記許可信号が伝送されてこないときには、当該電源回路の動作を停止させることにより、前記伝送機器への前記電源電圧の供給／停止を切り換え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。     In the power supply apparatus, the power supply switching means is
    When the permission signal is transmitted from at least one of the connection adapters via the television terminal and the transmission line, a power supply circuit that receives power supply from the external power supply and generates a power supply voltage for driving the transmission device When the permission signal is not transmitted from each of the connection adapters, the operation of the power supply circuit is stopped to switch the supply / stop of the power supply voltage to the transmission device. Item 2. The television broadcast signal transmission system according to Item 1.
  3. 　前記判定手段は、
    　前記電源プラグから前記電源コンセントに至る外部電源の給電経路上に設けられ、該給電経路を流れる電流量を検出する電流検出回路と、
    　該電流検出回路にて検出された電流量が予め設定された閾値以上であるとき、前記テレビ受信装置が前記テレビ放送信号を受信中であると判定する判定回路と、
    　を備えたことを特徴とする請求項１又は請求項２に記載のテレビ放送信号伝送システム。     The determination means includes
    A current detection circuit that is provided on a power supply path of an external power source from the power plug to the power outlet and detects the amount of current flowing through the power supply path;
    A determination circuit that determines that the television receiver is receiving the television broadcast signal when the amount of current detected by the current detection circuit is equal to or greater than a preset threshold;
    The television broadcast signal transmission system according to claim 1 or 2, further comprising:
  4. 　前記判定手段は、
    　前記テレビ受信装置を遠隔操作するリモートコントロール装置からの送信信号を受信する受信手段と、
    　該受信手段にて受信された前記リモートコントロール装置からの送信信号に基づき、前記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する操作判定手段と、
    　を備えたことを特徴とする請求項１又は請求項２に記載のテレビ放送信号伝送システム。     The determination means includes
    Receiving means for receiving a transmission signal from a remote control device for remotely operating the television receiver;
    Operation determining means for determining whether or not the television receiving apparatus is receiving a television broadcast signal based on the transmission signal from the remote control device received by the receiving means;
    The television broadcast signal transmission system according to claim 1 or 2, further comprising:
  5. 　前記電源装置は、前記複数のテレビ端子の一つに接続されて、当該テレビ端子から前記伝送線を介して前記伝送機器に電源電圧を供給するよう構成されていることを特徴とする請求項１～請求項４の何れか１項に記載のテレビ放送信号伝送システム。 The power supply apparatus is configured to be connected to one of the plurality of television terminals and supply a power supply voltage from the television terminal to the transmission device via the transmission line. The television broadcast signal transmission system according to any one of claims 4 to 5.
  6. 　前記電源装置は、前記伝送機器に内蔵されていることを特徴とする請求項１～請求項４の何れか１項に記載のテレビ放送信号伝送システム。 The television broadcast signal transmission system according to any one of claims 1 to 4, wherein the power supply device is built in the transmission device.
PCT/JP2011/058106 2010-03-30 2011-03-30 Television broadcast signal transmission system WO2011122675A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000353971A (en) * 1999-04-05 2000-12-19 Sharp Corp Transmitter and receiver for millimeter wave, repeater and electronics
JP2003283351A (en) * 2002-03-27 2003-10-03 Mitsubishi Electric Corp Power feeding method of receiving antenna
JP3135030U (en) * 2007-06-21 2007-08-30 Ｕｒｏ電子工業株式会社 Linked power supply device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000353971A (en) * 1999-04-05 2000-12-19 Sharp Corp Transmitter and receiver for millimeter wave, repeater and electronics
JP2003283351A (en) * 2002-03-27 2003-10-03 Mitsubishi Electric Corp Power feeding method of receiving antenna
JP3135030U (en) * 2007-06-21 2007-08-30 Ｕｒｏ電子工業株式会社 Linked power supply device

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