JP7162992B2 - Public hearing equipment, amplification equipment and measurement unit in the building - Google Patents

Description

INDUSTRIAL APPLICABILITY The present invention provides an in-building common hearing system for branching and distributing broadcast signals received by an antenna and transmission signals from a CATV station within a building, and an amplifying device and a measurement unit suitable for application to the in-building common hearing system. Regarding.

The "common hearing device in the building" referred to in this specification refers to a common hearing device installed in buildings such as buildings, collective housing, and condominiums, and installed in a building such as a common hearing device installed in a detached building. shall mean a public hearing device that
FIG. 16 shows an example of a configuration in which a CATV (cable television) is introduced into the common hearing system in the building.
The in-building common hearing device 1100 shown in FIG. 16 is installed in the building, and the downstream CATV signal branched by the two-way branch amplifier 1101 inserted in the CATV signal transmission line is tapped off. 1102 and protector SB into the building, and input to the first input terminal of bidirectional amplifier 1105, and the BS-IF or CS-IF signal from BS/CS antenna 1103 is bidirectionally amplified. It is input to the second input terminal of device 1105 . The three types of signals input to the first input terminal and the second input terminal are amplified by the bidirectional amplifier 1105, mixed and output from the output terminal.

The output of bidirectional amplifier 1105 is supplied to splitter 1106 , and one signal split by splitter 1106 is distributed to a plurality of signals by splitter 1107 . This distributed signal is amplified by bidirectional amplifier 1108 and further distributed by distributor 1109 . One distributed output distributed by distributor 1109 is supplied to series units 1110 to 1115 connected in series. A terminating resistor 1116 for impedance matching is connected to the end of the series unit 1115 .
The serial units 1110 to 1115 are installed in each room in the house, and cables connected to a television receiver or the like are connected to the serial units 1110 to 1115 .
In addition, instead of introducing a CATV signal into the in-building sharing device 1100, an FM antenna for receiving FM broadcasting and a UHF antenna for receiving terrestrial digital broadcasting are provided. Then, the FM broadcast signal received by the FM antenna, the terrestrial digital broadcast signal received by the UHF antenna, and the BS/CS-IF signal from the BS/CS antenna 1103 are mixed and input to the bidirectional amplifier 1105. good too.

JP-A-11-4357

In the conventional in-building common listening device 1100, a common listening signal to be transmitted is composed of an upstream CATV signal, a downstream CATV signal, and a BS/CS-IF signal. Alternatively, it is composed of an FM broadcast signal, a terrestrial digital broadcast signal, and a BS/CS-IF signal. The bidirectional branch amplifiers 1105 and 1108 are provided with amplifiers for amplifying co-audit signals composed of signals of these three different frequency bands. In this amplifying section, levels are adjusted so that signals in three different frequency bands are output at predetermined levels. In this case, the operator checks the input and output levels of each signal in the three different frequency bands in the amplifier section with a measuring instrument, and operates the built-in gain adjustment volume and attenuation switch to control the amplifier section. I have adjusted the level. Therefore, when adjusting the input/output levels of the amplifying sections in the bidirectional branch amplifiers 1105 and 1108, there is a problem that a measuring instrument for measuring the input/output levels is required.

Accordingly, the present invention provides an amplifying device and a measuring unit capable of adjusting the output level to a predetermined output level without using a measuring instrument, and a common hearing system in the building to which the amplifying device and the measuring unit are applied. It is intended to

The amplifier device of the present invention comprises an amplifier section for amplifying a signal in a predetermined frequency band, an input level adjustment section for electronically adjusting the input level according to the set parameters, and an electronically adjusting the output level according to the set parameters. a plurality of amplifying units each having an output level adjusting section capable of adjusting the input signal or the output signal and branching means for branching and outputting an input signal or an output signal; a setting unit for setting, a measuring unit for receiving a branched signal from the branching means taken from the amplifying unit and converting it into a digital signal indicating an input level or an output level, an interface for connecting to the amplifying unit, and a setting unit a control unit having an interface section including an interface connectable to a terminal, wherein the control unit is capable of transmitting the digital signal from the measurement section to the setting terminal via the interface section. In addition, a set value adjusted by the setting terminal so that the output level of the amplification unit becomes a predetermined value can be obtained via the interface unit, and when the set value is obtained, the set value obtained is The most important feature is that the setting section sets the set value as the parameter in the input level adjustment section and the output level adjustment section.
Further, in the control unit in the amplifying apparatus of the present invention described above, the output level range from the setting terminal, which is set so that the output level of the amplifying unit is set to a predetermined value, is acquired through the interface section. In this case, the acquired output level range is sent to the amplification unit, and the parameters are electronically controlled in the input level adjustment section and the output level adjustment section so that the output level falls within the output level range. ing.

Another amplifying device of the present invention is an amplifying device for amplifying a common listening signal provided in a transmission line of a common listening device in a building, wherein the amplifying device has a plurality of frequency bands constituting the common listening signal. An amplifier section that amplifies a signal for each frequency band, an input level adjustment section that can electronically adjust an input level according to a set parameter, and an output level adjustment section that can electronically adjust an output level according to a set parameter. , a plurality of amplifier units each having branching means for branching and outputting an input signal or an output signal; a setting unit for setting parameters for the input level adjustment section and the output level adjustment section in the plurality of amplification units; A measurement unit that receives branch signals from the branching means taken in from a plurality of amplification units and converts them into digital signals indicating input levels or output levels, an interface that connects to the plurality of amplification units, and a setting terminal. a control unit having an interface section including an interface capable of transmitting the digital signal from the measurement section to the setting terminal via the interface section; A setting value adjusted by the setting terminal so that the output levels of the plurality of amplification units become a predetermined value can be obtained via the interface unit, and when the setting value is obtained, the obtained The most important feature is that the setting section sets the set values to the input level adjustment section and the output level adjustment section as the parameters.
Further, in the control unit in the amplifier apparatus according to another aspect of the present invention, the range of output levels from the setting terminal set so that the output levels of the plurality of amplification units are set to a predetermined value is set to the interface section. the obtained output level range is sent to the plurality of amplification units, and the input level adjustment section and the output level adjustment section adjust the output level so that it falls within the output level range. Said parameters are electronically controlled.

A common hearing system in a building of the present invention comprises the above-described amplifying device of the present invention or another amplifying device, and a gateway connected to a public communication network, and the amplifying device has a frequency band not used in the common listening signal. is further provided with communication means for transmitting a communication signal using the digital signal is extracted from the received communication signal and transmitted to the public communication network, and remote control means connected to the public communication network can receive the digital signal; A remote setting value set so that the output level becomes a predetermined value can be sent from a public communication network to the gateway, and when the gateway receives the remote setting value from the public communication network, The gateway sends the received remote set value to the amplifying device in the communication signal, and the amplifying device extracts the remote set value from the received communication signal and uses the input level adjuster and the output level adjuster as the parameters. The most important feature is to set the

Further, a measuring unit of the present invention is connectable to a TV terminal, comprising measuring means capable of measuring an output level value of a signal output from the TV terminal, and and a communication means capable of transmitting a communication signal using a frequency band not used in the signal, and the output level of the signal output from the television terminal measured by the measuring means when connected to the television terminal. When the communication signal carrying the value is sent from the communication means to the transmission line and the amplifier device according to claim 3 or 4 receives the communication signal, the amplifier device converts the output level value from the received communication signal. The most important feature is that the parameter is electronically controlled so that the output level value becomes a predetermined output level value in the input level adjusting section and the output level adjusting section.
In the measurement unit, the signal output from the television terminal may be a co-listening signal amplified by the amplifier.

The amplifying device of the present invention comprises a control unit and an amplifying unit. The amplification unit has an input level adjustment section and an output level adjustment section. The control unit comprises a setting section, a measuring section, and an interface that connects to the setting terminal. The input levels/output levels of a plurality of amplifier units measured by the measuring section can be sent to the setting terminal, and the setting terminal can send the set value adjusted so that the output level becomes a predetermined value. When the setting section of the control unit receives the setting values, the setting values are set in the input level adjustment section and the output level adjustment section. As a result, the output level of the amplifier can be adjusted to a predetermined output level without using a measuring instrument.
A common hearing system in a building of the present invention comprises a gateway connected to the amplifying apparatus of the present invention and a public communication network, and the input level/output level of a plurality of amplification units measured by a measuring section is transmitted from the gateway to the public communication network. is transmitted and received by the remote control means, the remote control means is capable of transmitting a remote set value set so that the output level becomes a predetermined value, and when the remote set value is received by the gateway, the remote set value is is sent to the amplifier and set in the input level adjustment section and the output level adjustment section. As a result, the output level of the amplifier can be adjusted to a predetermined output level without using a measuring instrument.
The measuring unit of the present invention, when connected to the TV terminal, sends the output level value of the signal output from the TV terminal measured by the measuring means to the amplifying device of the present invention, and the amplifying device receives the output level value. The input level adjusting section and the output level adjusting section are electronically controlled so that the is at a predetermined level value. As a result, the output level of the amplifier can be adjusted to a predetermined output level without using a measuring instrument.

1 is a diagram showing the configuration of a shared hearing system in a building according to a first embodiment provided with an amplifying device of the present invention; FIG. FIG. 10 is a diagram showing the configuration of a shared hearing system in a building according to a second embodiment provided with the amplifying device of the present invention; FIG. 2 is a functional block diagram showing a connection state between a control unit and each amplifying unit in a bidirectional amplifying device that is the amplifying device of the present invention; FIG. 3 is a functional block diagram showing the configuration of a control unit of a bidirectional amplifier that is the amplifier of the present invention; FIG. 2 is a functional block diagram showing the configuration of an amplifying unit of a bidirectional amplifying device that is the amplifying device of the present invention; FIG. 3 is a functional block diagram showing the configuration of a remote control section in the in-building shared hearing system of the present invention provided with the amplifying device of the present invention; FIG. 2 is a functional block diagram showing the configuration of a gateway in the in-building shared hearing system of the present invention equipped with the amplifying device of the present invention; 1 is a functional block diagram showing a detailed configuration of a bidirectional amplifying device, which is the amplifying device of the first embodiment of the present invention; FIG. FIG. 4 is a functional block diagram showing another configuration of the amplifying unit of the bidirectional amplifying device, which is the amplifying device of the first embodiment of the present invention; FIG. 5 is a functional block diagram showing a detailed configuration of a bidirectional amplifier, which is an amplifier according to a second embodiment of the present invention; FIG. 11 is a functional block diagram showing another configuration of the amplifying unit of the bidirectional amplifying device, which is the amplifying device of the second embodiment of the present invention; FIG. 2 is a functional block diagram showing a configuration for performing multi-hop communication in a bi-directional amplifying device, which is the amplifying device of the present invention, and a diagram showing an outline of the route of multi-hop communication; 1 is a diagram showing only the configuration for explaining an example of use of the in-building shared hearing system according to the first embodiment of the present invention; FIG. FIG. 10 is a diagram showing only the configuration for explaining an example of use of the in-building shared hearing system according to the second embodiment of the present invention; 4 is a functional block diagram showing the configuration of the measurement unit of the present invention; FIG. 1 is a diagram showing a configuration of a conventional in-building common hearing device; FIG.

<First embodiment of shared hearing device in building>
FIG. 1 shows the construction of a common hearing system in a building according to the first embodiment, which is equipped with the amplifying device of the present invention.
The in-building common hearing system 1 of the first embodiment of the present invention shown in FIG. 17, a branch/divider 18, a bidirectional amplifier 19, and a branch/divider 20 are connected in cascade; and a first system in which a bidirectional amplifier 22 and a branch/divider 23 are connected in cascade. , a second system in which a bidirectional amplifier 24 and a splitter/divider 25 are cascaded. A transmission signal transmitted through a transmission line is attenuated by transmission line loss, division, or branching. 24 are provided.
In the common listening device 1 in the building, a signal is transmitted from the CATV station 1010 via trunk equipment 1011 such as an amplifier and a branch/distributor installed on the trunk line, and a branch/distributor inserted into the transmission line of the CATV signal. A downstream signal of the branched CATV signal (hereinafter referred to as a "CATV downstream signal") is drawn into the building via a tap-off (TAP OFF) 1012 and a protector 1013. FIG. The maintenance up to the protector 1013 is performed by the CATV station 1010, but the maintenance after the protector 1013 is supposed to be performed by the subscriber.

In the common hearing system 1 in the building, the BS/CS-IF signal from the BS/CS antenna 10 is input to the first input terminal of the mixer 12 whose second input terminal is connected to the gateway 13. The output terminal is connected to the second input terminal of mixer 15 . The CATV downstream signal input to the common hearing device 1 in the building is input to the first input terminal of the mixer 15, and the CATV downstream signal input to the first input terminal and the second input terminal of the mixer 15 are input. The resulting BS/CS-IF signals are mixed to form a common listening signal, which is output from the output terminal. The CATV downstream signal includes a terrestrial digital broadcasting signal.

The common listening signal output from the output terminal of mixer 15 is input to bidirectional amplifier 17 and amplified to a predetermined level. The output of the bidirectional amplifier 17 is supplied to the splitter/divider 18, where it is split/divided into a plurality of parts. The common listening signal that has passed through the splitter/divider 18 is input to the bidirectional amplifier 19 and amplified to a predetermined level. The output of the bidirectional amplifier 19 is supplied to the splitter/divider 20, where it is split/divided into a plurality of parts. The common listening signal that has passed through the splitter/distributor 20 is further split by the splitter/distributor 21 into first system and second system common listening signals. The common listening signal distributed to the first system is input to the bidirectional amplifier 22 and amplified to a predetermined level. Branched and distributed. The communal listening signals branched/distributed by the branch/distributor 23 are supplied to television terminals of serial units installed in each room in the house, and cables connected to television receivers and the like are connected to the television terminals. Connected. The shared signal distributed to the second system is input to the bidirectional amplifier 24 and amplified to a predetermined level, and the output of the bidirectional amplifier 24 is supplied to the splitter/divider 25. It is branched/distributed in multiple ways. The communal listening signals branched/distributed by the branch/distributor 25 are supplied to television terminals of serial units installed in each room in the house, and cables connected to television receivers and the like are connected to the television terminals. Connected.

Also, the upstream signal sent from the series unit of the first system is amplified to a predetermined level by the bidirectional amplifier 22 through the splitter/divider 23 and supplied to the splitter/divider 21 . Further, the upstream signal sent from the second series unit is amplified to a predetermined level by the bidirectional amplifier 24 through the splitter/divider 25 and supplied to the splitter/divider 21 . The upstream signal output from the splitter/divider 21 goes up through the path of the splitter/divider 20-bidirectional amplifier 19-divider/divider 18-bidirectional amplifier 17, and passes through the mixer 15. It is input to protector 1013 . The upstream signal that has passed through protector 1013 goes up to CATV station 1010 via tap-off 1012 , CATV main line and main line equipment 1011 and is received there.

As described above, the common listening signal is composed of the CATV downstream signal, the upstream signal of the CATV signal (hereinafter referred to as "the CATV upstream signal"), and the BS/CS-IF signal. 24 has an amplification unit for amplifying CATV downstream signals, an amplification unit for amplifying CATV upstream signals, and an amplification unit for amplifying BS/CS-IF signals. Operation data consisting of equipment status information such as supply voltage and supply current of each amplifier unit and temperature, and transmission signal status information such as input level, output level and C/N are periodically monitored. The monitor signal to be monitored is constructed by adding unique identification information (hereinafter referred to as "ID") specific to the amplifier unit being monitored to the operation data, and the monitor signal is modulated and used in the co-listening signal. A communication signal using a carrier of a frequency band (for example, 920 MHz) that is not used for communication is sent up the main line in the in-building common hearing system 1 and supplied to the gateway 13 via the mixers 15 and 12. . The monitor signal is a digital signal, packetized, and the carrier is FSK (frequency shift keyed) modulated with the packet to create a communication signal. A communication signal is communicated by asynchronous communication, and a packet of the communication signal has a header of source information and destination information. The gateway 13 has a function of transmitting and receiving data between the common hearing device 1 in the building and the Internet 14, which is a public communication network. ) or HTTPS (Hypertext Transfer Protocol Secure) to the cloud 3 on the Internet 14 . Monitor signals received by cloud 3 are stored in cloud 3 . Note that the gateway 13 sends a monitor signal to the cloud 3 at predetermined time intervals, and sends a monitor signal to the cloud 3 each time the monitor signal is updated.

The gateway 13 is connected to the Internet 14 wirelessly such as a mobile phone network or Wi-Fi, but may be connected to the Internet 14 by wire. A remote control unit 2 is connected to the Internet 14 by wire or wirelessly. As a result, by accessing the cloud 3, the remote control unit 2 confirms the monitor signal graphed by ID by the application on the cloud 3 on the display device, thereby confirming the bidirectional amplifiers 17, 19, 22, 24. can be monitored. Further, when the monitor signal is analyzed by an application on the cloud 3 and there is an abnormality in the monitor signal, the abnormality information can be displayed on the display for monitoring. If anomaly information shows a sign of malfunction in one of the amplification units, personnel will be dispatched to the building or condominium where the in-building common hearing device 1 that has the amplification unit is installed to The amplification unit can be replaced as soon as possible, and failures can be prevented from occurring. Thereby, the remote control section 2 can periodically monitor each amplification unit of the two-way amplification devices 17 , 19 , 22 , 24 in the common hearing device 1 in the building. Furthermore, the bidirectional amplifiers 17, 19, 22, and 24 also send information on parameters for level adjustment set in each amplification unit to the gateway 13 by means of communication signals. Information on parameters for level adjustment is also sent to the cloud 3. The remote control unit 2 can change the parameters stored in the cloud 3, the changed parameters are sent from the cloud 3 through the Internet 14 to the gateway 13, and the gateway 13 sends the changed parameters to the amplification unit. Thus, the level of each amplification unit can be adjusted by remote control. Each amplification unit is provided with an input level adjustment section for adjusting the input level and an output level adjustment section for adjusting the output level. As a result, an output signal having a predetermined output level is output from each amplifying unit. That is, the parameter is a level adjustment parameter set in the amplification unit so that the signal in the assigned frequency band is output at a predetermined level. The IDs are added to the parameters, and the IDs can identify each amplification unit of the bidirectional amplification devices 17, 19, 22, and 24, and also identify the input level adjustment section and the output level adjustment section in each amplification unit. can be identified.

<Second embodiment of shared hearing device in building>
FIG. 2 shows the configuration of the in-building common hearing system 5 of the second embodiment, which is equipped with the amplifying device of the present invention.
The in-building common hearing system 5 of the second embodiment of the present invention shown in FIG. 15, a bidirectional amplifier 17, a branch/divider 18, a bidirectional amplifier 19, and a branch/divider 20 are connected in cascade, and a bidirectional amplifier 22 and a branch/divider 23 are connected in cascade. and a second system in which a bidirectional amplifier 24 and a splitter/divider 25 are cascaded. A transmission signal transmitted through a transmission line is attenuated by transmission line loss, division, or branching. 24 are provided. A BS/CS antenna 10 for receiving BS/CS broadcasting and outputting a BS/CS-IF signal, an FM antenna 11a for receiving FM broadcasting, and a UHF antenna 11b for receiving terrestrial digital broadcasting are all provided in the building. It is installed on the roof of the building where the hearing device 5 is installed.

In the common hearing device 5 in the building, the BS/CS-IF signal from the BS/CS antenna 10 is input to the first input terminal of the mixer 12 whose second input terminal is connected to the gateway 13. The output terminal is connected to the second input terminal of mixer 15 . In a mixer 11 in which the FM broadcast signal received by the FM antenna 11a is input to the first input terminal and the terrestrial digital broadcast signal received by the UHF antenna 11b is input to the second input terminal, the FM broadcast signal and It is mixed with a terrestrial digital broadcasting signal and output from an output terminal. The output terminal of the mixer 11 is connected to the first input terminal of the mixer 15, and the mixed signal of the FM broadcast signal and the terrestrial digital broadcast signal output from the output terminal of the mixer 11 is input to the second input terminal. The mixed BS/CS-IF signals are mixed to form a common listening signal, which is output from the output terminal of the mixer 15 .

The common listening signal output from the output terminal of mixer 15 is input to bidirectional amplifier 17 and amplified to a predetermined level. The output of the bidirectional amplifier 17 is supplied to the splitter/divider 18, where it is split/divided into a plurality of parts. The common listening signal that has passed through the splitter/divider 18 is input to the bidirectional amplifier 19 and amplified to a predetermined level. The output of the bidirectional amplifier 19 is supplied to the splitter/divider 20, where it is split/divided into a plurality of parts. The common listening signal that has passed through the splitter/distributor 20 is further split by the splitter/distributor 21 into first system and second system common listening signals. The common listening signal distributed to the first system is input to the bidirectional amplifier 22 and amplified to a predetermined level. Branched and distributed. The communal listening signals branched/distributed by the branch/distributor 23 are supplied to television terminals of serial units installed in each room in the house, and cables connected to television receivers and the like are connected to the television terminals. Connected. The shared signal distributed to the second system is input to the bidirectional amplifier 24 and amplified to a predetermined level, and the output of the bidirectional amplifier 24 is supplied to the splitter/divider 25. It is branched/distributed in multiple ways. The communal listening signals branched/distributed by the branch/distributor 25 are supplied to television terminals of serial units installed in each room in the house, and cables connected to television receivers and the like are connected to the television terminals. Connected.

As described above, the common listening signal is composed of a mixed signal of an FM broadcast signal, a terrestrial digital broadcast signal, and a BS/CS-IF signal. It has an amplification unit for amplification, an amplification unit for amplifying terrestrial digital broadcasting signals, and an amplification unit for amplifying BS/CS-IF signals. Operation data consisting of equipment status information such as supply voltage and supply current of each amplifier unit and temperature, and transmission signal status information such as input level, output level and C/N are periodically monitored. The monitor signal to be monitored is constructed by adding unique identification information (hereinafter referred to as "ID") specific to the amplifier unit being monitored to the operation data, and the monitor signal is modulated and used in the co-listening signal. A communication signal using a carrier of a frequency band (for example, 920 MHz) that is not available is transmitted up the main line in the in-building common hearing device 5 and supplied to the gateway 13 via the mixers 15 and 12. . The gateway 13 has a function of transmitting and receiving data between the common listening device 5 in the building and the Internet 14, converts the communication signal into a baseband packet signal, and transmits the monitor signal over the Internet 14 by TCP or HTTPS. can be sent to the cloud 3 of Monitor signals received by cloud 3 are stored in cloud 3 . Note that the gateway 13 sends a monitor signal to the cloud 3 at predetermined time intervals, and sends a monitor signal to the cloud 3 each time the monitor signal is updated.

Descriptions of the gateway 13, the cloud 3, and the remote control unit 2 are as described above, so they are omitted. Information is also sent to the gateway 13 by a communication signal, and the gateway 13 also sends parameter information for level adjustment to the cloud 3 in addition to the monitor signal. The remote control unit 2 can change the parameters stored in the cloud 3, the changed parameters are sent from the cloud 3 through the Internet 14 to the gateway 13, and the gateway 13 sends the changed parameters to the amplification unit. Thus, the level of each amplification unit can be adjusted by remote control. Each amplification unit is provided with an input level adjustment section for adjusting the input level and an output level adjustment section for adjusting the output level. As a result, an output signal having a predetermined output level is output from each amplifying unit. That is, the parameter is a level adjustment parameter set in the amplification unit so that the signal in the assigned frequency band is output at a predetermined level. The IDs are added to the parameters, and the IDs can identify each amplification unit of the bidirectional amplification devices 17, 19, 22, and 24, and also identify the input level adjustment section and the output level adjustment section in each amplification unit. can be identified.

<Connection state in bidirectional amplifier>
Bidirectional amplifiers 17, 19, 22, and 24, which are embodiments of the amplifier of the present invention, each include a control unit and a plurality of amplifier units, and the control unit and the plurality of amplifier units are interconnected. It is FIG. 3 shows a functional block diagram showing the connection state between the control unit and the plurality of amplifying units in the bidirectional amplifying devices 17, 19, 22 and 24 according to the present invention. Here, in the in-building common hearing system 1 of the first embodiment to which the bidirectional amplifier according to the present invention is applied, the common listening signal is composed of a CATV downstream signal, a CATV upstream signal, and a BS/CS-IF signal. In the building common listening device 5 of the second embodiment, the common listening signal is composed of a mixed signal of an FM broadcast signal, a terrestrial digital broadcast signal, and a BS/CS-IF signal. Thus, although the frequency bands to be amplified are different, the states of connection between the control unit and the plurality of amplification units in the bidirectional amplifiers 17, 19, 22 and 24 are the same. Further, since the bidirectional amplifiers 19, 22, and 24 have the same configuration as the bidirectional amplifier 17, a functional block diagram showing the connection state between the control unit and the plurality of amplifier units, using the bidirectional amplifier 17 as a representative, is shown in FIG. is shown in FIG.
The bidirectional amplifier 17, which is an embodiment of the amplifier of the present invention shown in FIG. It comprises a second amplification unit 53 for amplifying broadcast signals and a third amplification unit 54 for amplifying BS/CS-IF signals. The control unit 51 and the first to third amplification units 52 to 54 are interconnected by a communication bus 17-1.

As shown in FIG. 3, the control unit 51 in the bidirectional amplifier 17 includes at least a microcontroller (MCU) 100, an I/O 104, an interface (IF) 104a and a communication I/F 105. FIG. The first amplification unit 52 includes at least an MCU 130, an I/O 134 and an amplification section 52-1, the second amplification unit 53 also includes at least an MCU 150, an I/O 154 and an amplification section 53-1. The amplification unit 54 also includes at least an MCU 160, an I/O 164 and an amplification section 54-1. The I/O 104, I/O 134, I/O 154, and I/O 164 each have an RS485 interface and are interconnected by an RS485 communication bus 17-1. As a result, the control unit 51 can transmit and receive data to and from the first to third amplification units 52 to 54 in serial half-duplex communication using two-line balanced transmission lines. Specifically, the control unit 51 can set parameters to the input level adjustment section and the output level adjustment section of the first amplification unit 52 to the third amplification unit 54 through the communication bus 17-1, and Parameters set in the input level adjustment section and the output level adjustment section of the unit 52 through the third amplification unit 54 can be taken in through the communication bus 17-1.
Under the control of the MCU 100, the communication I/F 105 of the control unit 51 changes the parameters set in the input level adjustment section and the output level adjustment section of the first to third amplification units 52 to 54 taken into the control unit 51. The parameter information to which the ID is added and the monitor signal are packetized, and the carrier of the frequency band (for example, 920 MHz) not used in the common listening signal is FSK-modulated with packets to form a communication signal, which is sent to the gateway 13. is doing. The I/F 104a is a UART (Universal Asynchronous Receiver/Transmitter) interface, and can be connected to a setting terminal such as a personal computer. When the setting terminal is connected, the initial settings of the first to third amplification units 52 to 54 can be performed from the setting terminal through the I/F 104a, and predetermined parameters can be set to the input level adjustment section and the output level adjustment section. Can be set to part.

Specifically, when the output level of the bidirectional amplifier 17, which is an embodiment of the amplifier of the present invention, changes due to changes in the environment, level adjustment can be performed from the setting terminal. When adjusting the level, the setting terminal is connected to the control unit 51 via the I/F 104a. Then, the monitor signals in the first to third amplifier units 52 to 54 connected to the control unit 51 via the communication bus 17-1 are taken in from the control unit 51, and the monitor signals graphed by ID according to the application are displayed. Check on the instrument. Further, the parameters set in the input level adjusting section and the output level adjusting section in each of the amplifying sections 52-1, 53-1 and 54-1 in the first to third amplifying units 52 to 54 are taken in and displayed on the display. display above. Then, while confirming the monitor signal so that the output levels of the first to third amplification units 52 to 54 become predetermined output levels, the parameters set in the input level adjustment section and the output level adjustment section are set. Adjust on your device. As a result, the signals in the frequency band assigned from the first to third amplification units 52 to 54 are output at a predetermined level. In this way, the bidirectional amplifier 17 is electronically controlled by the setting terminal so that predetermined parameters are set in the input level adjustment sections and the output level adjustment sections of the first to third amplification units 52 to 54. Become.

In the bidirectional amplifier 17, which is an embodiment of the amplifier of the present invention, the control unit 51 and the first to third amplifier units 52 to 54 are mounted on a board (not shown). It is supposed to be removable. Since the RS485 communication bus 17-1 is a two-wire balanced transmission line, the attachment/detachment mechanism can be simplified and resistance to noise and surge can be improved. As described above, the level adjustment of the input level adjustment section and the output level adjustment section of the first to third amplification units 52 to 54 is performed via the control unit 51. , and stored in the memories of the first to third amplification units 52 to 54 . For this reason, for example, even if the control unit 51 fails, the first to third amplification units 52 to 54 operate under the control of the MCUs incorporated therein, and the first to third amplification units 52 to 54 Since the parameters set in the amplification unit 54 are maintained, the wave never stops. In this way, the control unit 51 and the first to third amplification units 52 to 54 each have a built-in MCU and operate independently, and even if one of the units fails, the other units does not affect
The bidirectional amplifiers 19, 22 and 24 also have the functions as described above.

<Control unit>
Next, FIG. 4 shows a functional block diagram showing the configuration of the control unit 51 provided in the bidirectional amplifier, which is the amplifier of the present invention.
A control unit 51 shown in FIG. is connected to the bus 108 of the The MCU 100 is a microcontroller, and includes a CPU (Central Processing Unit) 101, a ROM (Read Only Memory) 102, a RAM (Random Access Memory) 103, and an I/O 104, which are connected via a bus 108. ing. By executing the control processing program stored in the ROM 102, the CPU 101 operates the MCU 100 so that the control unit 51 performs the above-described processing. In this case, the parameters and monitor signals set in the input level adjustment section and the output level adjustment section of the amplifier unit taken into the control unit 51 are set in the area of the RAM 103 and stored in the temporary memory. When the power is turned on, the CPU 101 executes an initial setting program stored in the ROM 102 to initialize the system. Under the control of the MCU 100, the communication I/F 105 sends the monitor signal from each amplifier unit and the communication signal FSK-modulated with a packet containing parameters set in the input level adjustment section and the output level adjustment section to the gateway 13. sending out. The ID of the device itself is added to the monitor signal and parameters. Further, the communication I/F 105 receives a communication signal, and when receiving the communication signal, under the control of the MCU 100, the communication signal with the parameters to which the own ID is added is taken in. The fetched parameters are set by the control unit 51 in the input level adjustment section and the output level adjustment section of the corresponding amplification unit. Furthermore, it is connected to the communication bus 17-1 via an RS485 port included in the I/O 104 of the MCU 100. FIG. Then, the parameters set in the input level adjusters and output level adjusters of the first to third amplifier units 52 to 54 connected to the communication bus 17-1 are fetched and stored in the temporary memory area. A setting terminal can be connected to the I/F 104a in the I/O 104, and when the setting terminal is connected, the first amplification unit 52 to the third amplification unit are connected from the setting terminal via the I/F 104a as described above. 54 can be initialized, and predetermined parameters can be set for the input level adjustment section and the output level adjustment section.

Five RF lines are connected to the measuring section 106 to provide a branched output obtained by branching the input and output of the first amplification unit 52 and a branched output obtained by branching the inputs of the second amplification unit 53 and the third amplification unit 54. , RF signals of branch outputs 1 to 5, which are branch outputs obtained by branching outputs of bidirectional amplifiers, are input from respective RF lines. Under the control of the CPU 101, the measuring section 106 receives the analog RF signals of the branch outputs 1 to 5, detects the level of each channel in each branch output, and converts it into a digital level signal. Further, the A/D 107 takes in analog sensor signals from sensors (not shown) such as voltage, current, and temperature in the first to third amplification units 52 to 54 under the control of the CPU 101 and converts them into digital signals. ing. Under the control of the CPU 101, the digital level signal and the digital sensor signal of the measurement unit 106 are converted into a monitor signal with an ID in the MCU 100 and stored in a temporary memory area. Then, under the control of the MCU 100, the communication I/F 105 packetizes the digital monitor signal and the set parameter information, and FSK-modulates the carrier with the packet to create a communication signal. It will be sent to 13.

The control unit 51 described above is provided in the bidirectional amplifier according to the present invention applied to the in-building common hearing system 1 of the first embodiment of the present invention. The control unit 51 provided in the bidirectional amplifier according to the present invention applied to the common hearing system 5 of the second embodiment of the present invention is not shown, but the measuring section 106 has four amplifiers. An RF line is connected, and branch outputs 1 to 4, which are branch outputs obtained by branching the inputs of the first amplification unit 52 to the third amplification unit 54 and branch outputs obtained by branching the output of the bidirectional amplifier, are provided. Input from each RF line. The configuration other than the above configuration is the same as the configuration of the control unit 51 provided in the two-way amplifier according to the present invention applied to the in-building common hearing system 1 of the first embodiment of the present invention. The explanation is omitted.

<Amplification unit>
Next, FIG. 5 shows a functional block diagram showing the configuration of the amplifying unit of the bidirectional amplifying device, which is the amplifying device of the present invention. Since the functional block diagram of this amplifying unit is the same as that of the first amplifying unit 52 to the third amplifying unit 54 here, the functional block diagram of the first amplifying unit 52 is shown in FIG. 5 as a representative. .
The first amplification unit 52 shown in FIG. 5 includes an MCU 130 and an amplification section 52-1 including a plurality of sensors 52-2. The MCU 130 is a microcontroller, and includes a CPU 131 , a ROM 132 , a RAM 133 and an I/O 134 , which are connected via a bus 137 . By executing the amplification processing program stored in the ROM 132, the CPU 131 operates the MCU 130 so that the first amplification unit 52 performs the amplification processing described above. In this case, the parameters set in the amplifier 52-1 are stored in the temporary memory set in the area of the RAM 133. FIG. Also, when the power is turned on, the CPU 131 executes the initialization program stored in the ROM 132 to initialize the first amplification unit 52 . At least an input branch signal in the amplification section 52-1 is sent from the first amplification unit 52 to the control unit 51. FIG. Also, sensor signals from the plurality of sensors 52 - 2 such as voltage, current and temperature in the first amplification unit 52 are sent to the control unit 51 . The I/O 134 has an RS485 interface and is connected to the communication bus 17-1. As a result, the control unit 51 can send to the first amplification unit 52 parameters to be set in the input level adjustment section and the output level adjustment section so that the input RF signal is output at a predetermined level, and the input of the first amplification unit 52 Parameters set in the level adjustment section and the output level adjustment section and operation data of the first amplification unit 52 can be taken in. The parameters sent via the communication bus 17-1 and I/O 134 are set in the input level adjustment section and the output level adjustment section of the amplification section 52-1 under the control of the CPU 131. FIG.
The amplifying apparatus having the amplifying unit configured as described above is applicable to both the in-building community hearing system 1 of the first embodiment of the present invention and the in-building community listening system 5 of the second embodiment of the present invention. be able to.

<Remote control part>
Next, FIG. 6 shows a functional block diagram showing the configuration of the remote control unit 2 connected to the Internet 14. As shown in FIG. The remote control unit 2 has the same configuration in the in-building common hearing device 1 of the first embodiment and in the in-building common hearing device 5 of the second embodiment provided with the amplifying device of the present invention.
The remote control unit 2 shown in FIG. 6 includes an MCU 140, an input device 145, a display 146, and a wide area communication I/F 147. The input device 145 is connected to the I/O 144, and the display 146 and the wide area communication I/F 147 are It is connected to bus 148 of MCU 140 . A wide area communication I/F 147 is a communication interface that can be connected to a public communication network such as the Internet 14 . The MCU 140 is a microcontroller, and includes a CPU 141 , a ROM 142 , a RAM 143 and an I/O 144 , which are connected via a bus 148 . CPU 141 accesses cloud 3 by executing a remote control program stored in ROM 142 . As a result, the monitor signal graphed by ID in each of the bidirectional amplifiers 17, 19, 22, and 24 is displayed on the display 176 by the application on the cloud 3. The first through third amplification units 52 through 54 in each of 17, 19, 22 and 24 can be monitored. In addition, when the monitor signal is analyzed by the application on the cloud 3 and there is an abnormality in the monitor signal, abnormal information is displayed in each of the bidirectional amplifiers 17, 19, 22, and 24 under the control of the CPU 141. It can be displayed and monitored on the device 176 . If a sign of failure of one of the amplifying units in each of the bidirectional amplifying devices 17, 19, 22, and 24 is detected based on the abnormality information under the control of the CPU 141, the in-building common hearing device is notified to that effect. or dispatch personnel to the building or condominium where the in-building common hearing device 1 that has the amplification unit is installed to replace the amplification unit in advance, thereby preventing failures. can be prevented from occurring. Thereby, the remote control section 2 can periodically monitor the first to third amplification units 52 to 54 of the two-way amplification devices 17 , 19 , 22 , 24 in the common hearing device 1 in the building.

When the power is turned on, the CPU 141 executes an initial setting program stored in the ROM 142 to perform initial setting of each part.
Under the control of the CPU 141, the remote control unit 2 can confirm the operating states of the first to third amplification units 52 to 54 in the bidirectional amplifiers 17, 19, 22, 24 displayed on the display 146. can. Thereby, level adjustment can be performed from the remote controller 2 when the output levels of the bidirectional amplifiers 17, 19, 22, and 24 change due to changes in the environment or the like. When performing level adjustment, the graphed monitor signal displayed on the display 146 for each ID and the input level adjustment section and output level adjustment section of the first to third amplification units 52 to 54 are set. While confirming the parameters set, the input device 145 such as a keyboard connected to the I/O 144 is used to change the parameters set in the input level adjustment section and the output level adjustment section of any amplification unit. The changed parameters are sent to the in-building shared listening device 1 or the in-building shared listening device 5 via the Internet 14 and the gateway 13 under the control of the CPU 141 . In the in-building common hearing device 1 or in the in-building common hearing device 5, the bi-directional amplifying device provided with the amplifying unit determined by the ID added to the changed parameter information receives the input of the amplifying unit according to the ID. The changed parameters are set in the level adjustment section and the output level adjustment section. In this way, the remote control section 2 changes the parameters set in the input level adjustment section and the output level adjustment section of the first to third amplification units 52 to 54 in the bidirectional amplifiers 17, 19, 22 and 24. Can be adjusted by remote control. In addition, even a tablet or smartphone installed with a remote control program connectable to the Internet 14 can access the cloud 3 to perform the first amplification unit 52 to the third amplification Unit 54 can be monitored, and parameters set in the input level adjustment section and the output level adjustment section of the first to third amplification units 52 to 54 in the bidirectional amplifiers 17, 19, 22, 24 can be remotely controlled. can be adjusted with

<Gateway>
Next, FIG. 7 is a functional block diagram showing the configuration of the gateway 13 in the in-building sharing device 1 of the first embodiment and the in-building sharing device 5 of the second embodiment, which are equipped with the amplifying device of the present invention.
The gateway 13 shown in FIG. 7 includes an MCU 170, an input device 175, a display device 176, a wide area communication I/F 177, and a communication I/F 178. The input device 175 is connected to the I/O 174, and the display device 176 and the wide area communication I /F 177 and communication I/F 178 are connected to bus 179 of MCU 170 . A wide area communication I/F 177 is a communication interface that can be connected to a public communication network such as the Internet 14 . The MCU 170 is a microcontroller, and includes a CPU 171 , a ROM 172 , a RAM 173 and an I/O 174 , which are connected via a bus 179 . The CPU 171 executes the gateway processing program stored in the ROM 172 to execute the gateway processing described below.
The gateway 13 performs mutual conversion between a communication standard (protocol) used in communication signals and a protocol (HTTPS or TCP) for connecting to the cloud 3 on the Internet 14 . A communication signal sent from the control unit 51 in each of the bidirectional amplifiers 17 , 19 , 22 , 24 to the gateway 13 is demodulated into a monitor signal with an ID and a parameter with an ID under the control of the CPU 171 , and stored in the temporary memory of the RAM 173 . Stored in the area. Under the control of the CPU 171, the ID-attached monitor signal and the ID-attached parameters are read from the RAM 173 at predetermined time intervals, changed into a predetermined protocol format, packetized, and sent to the cloud 3 on the Internet 14. .

Gateway 13 also sends a request to ask if the parameters stored in cloud 3 have changed. If the stored parameters have been changed, the cloud 3 sends the changed ID-attached parameters to the gateway 13 in response to the request. The gateway 13 stores the changed ID-attached parameters in the RAM 173 under the control of the CPU 171, and sends a parameter-changing command and the changed ID-attached parameters to the bidirectional amplifier identified from the ID. The control unit 51 of the bidirectional amplifying device identifies the relevant amplifying unit from the parameters with ID sent under the control of the CPU 101, and sets the changed parameters to the amplifying unit.

<Details of the amplification device of the first embodiment>
Next, FIGS. 8 and 9 are functional block diagrams showing the detailed configuration of the bidirectional amplifier, which is the amplifier of the first embodiment of the present invention applied to the in-building common hearing system 1 of the present invention. Since the bidirectional amplifier 17 and the bidirectional amplifiers 19, 22, and 24 have the same configuration, a functional block diagram showing the detailed configuration of the bidirectional amplifier 17 according to the first embodiment is shown as a representative. is shown in FIG. 8, and FIG. 9 is a functional block diagram showing the configuration of the amplifying unit of the bidirectional amplifying device 17 according to the first embodiment, which is not shown in FIG.
As shown in FIGS. 8 and 9, the bidirectional amplifier 17 according to the first embodiment includes a control unit 51, a first amplification unit 52, a second amplification unit 53, and a third amplification unit . In the control unit 51, a setting section 51-1 realized by executing a control processing program by the CPU 101, an I/O 104 including an I/F 104a, a communication I/F 105, a measuring section 106, and an A/D 107 are shown. there is 9 shows only the configuration of the amplifier section 52-1 of the first amplifier unit 52, the amplifier section 53-1 of the second amplifier unit 53, and the amplifier section 54-1 of the third amplifier unit 54; Configuration omitted.
In the bidirectional amplifying device 17 shown in FIGS. 8 and 9, the control unit 51 and the first to third amplifying units 52 to 54 are interconnected by a communication bus 17-1 as shown in FIG. .

A terminal 201 is a terminal for outputting a CATV upstream signal and for inputting a CATV downstream signal, and a terminal 202 is for inputting a BS/CS-IF signal or outputting a CATV upstream signal and a CATV downstream signal. This is a terminal to which BS/CS-IF signals are input. When a CATV downstream signal is input to the terminal 201 and a BS/CS-IF signal is input to the terminal 202, the input selector switch 210 switches to the terminal 201 side to supply the CATV downstream signal to the first filter (Fil1). , when a CATV downstream signal and a BS/CS-IF signal are input to the terminal 202, it is switched to the terminal 202 side and the CATV downstream signal demultiplexed by the third filter (Fil3) is supplied to Fil1. Fil1 demultiplexes the CATV downstream signal and supplies it to the amplification section 53-1 of the second amplification unit 53, and demultiplexes the CATV upstream signal supplied from the second splitter (Sp2) and adjusted to a predetermined level. is supplied to the input changeover switch 210. When the input changeover switch 210 is switched to the terminal 201 side, the CATV upstream signal adjusted to a predetermined level is output from the terminal 201, and when switched to the terminal 202 side, the CATV upstream signal is supplied to Fil3. Then, the CATV upstream signal adjusted to a predetermined level through Fil3 is output from the terminal 202 .

A terminal 203 receives a CATV upstream signal sent from the serial unit in the common hearing system 1 and outputs a CATV downstream signal adjusted to a predetermined level and a BS/CS-IF signal. The CATV upstream signal input to the terminal 203 passes through the fifth splitter (Sp5), is supplied to the fourth filter (Fil4), is demultiplexed, and is supplied to the second filter (Fil2). Fil2 demultiplexes the CATV upstream signal and supplies it to the amplifying section 52-1 of the first amplifying unit 52. FIG. The amplifying section 52-1 is configured by cascade-connecting an input level adjusting section 211, a first splitter (Sp1), a first amplifier (Amp1), an output level adjusting section 212, a second amplifier (Amp2), and Sp2. ing. A branch output 1 obtained by branching the input signal of Amp1 branched at Sp1 and a branch output 2 obtained by branching the output signal of Amp2 branched at Sp2 are sent to the measuring section 106, where the input level and the output level are detected. , the ID of the first amplification unit 52 is added, and stored in the control unit 51 . Parameters A and B are set in the input level adjustment section 211 and the output level adjustment section 212 from the setting section 51-1 so that the input level and the output level have predetermined values. At this time, the parameters A and B from the setting section 51-1 are set in the input level adjustment section 211 and the output level adjustment section 212, respectively, under the control of the MCU 130, as shown in FIG. The parameters A and B can be adjusted by remote control in the remote controller 2 as described above and received by the communication I/F 105 of the control unit 51 via the gateway 13 . By connecting a setting terminal to the I/F 104 a of the control unit 51 , the parameters A and B adjusted by the setting terminal can be received from the I/F 104 a of the control unit 51 . As a result, the CATV upstream signal adjusted to the predetermined level is supplied to Sp2.

The CATV downstream signal demultiplexed by Fil1 is supplied to the amplification section 53-1 of the second amplification unit 53. FIG. The amplifier section 53-1 is configured by cascade-connecting an input level adjustment section 213, a third splitter (Sp3), a third amplifier (Amp3), an output level adjustment section 214, and a fourth amplifier (Amp4). . A branch output 3 obtained by branching the input signal of Amp 3 branched in Sp3 and a branch output 4 obtained by branching the output signal from Fil 4 branched in Sp5 are sent to the measuring section 106, and the input level of each channel is measured. , the output level is detected, the ID of the second amplification unit 53 is added, and stored in the control unit 51 . Parameters C and D are set in the input level adjustment section 213 and the output level adjustment section 214 from the setting section 51-1 so that the input level and the output level for each channel have predetermined values. At this time, as shown in FIG. 9, parameters C and D from setting section 51-1 are set in input level adjustment section 213 and output level adjustment section 214 under the control of MCU 150, respectively. The parameters C and D can be set by remote control in the remote controller 2 as described above. By connecting a setting terminal to the I/F 104a of the control unit 51, the parameters C and D can be set from the setting terminal. As a result, the CATV downstream signal adjusted to a predetermined level is output from the terminal 203 .

The BS/CS-IF signal demultiplexed by Fil 3 is supplied to the amplification section 54 - 1 of the third amplification unit 54 . The amplifier section 54-1 is configured by cascade-connecting an input level adjustment section 215, a fourth splitter (Sp4), a fifth amplifier (Amp5), an output level adjustment section 216, and a sixth amplifier (Amp6). . Then, the branch output 5 obtained by branching the input signal of Amp 5 branched at Sp4 and the branch output 4 obtained by branching the output signal from Fil 4 branched at Sp5 are sent to the measuring section 106, and the input level of each channel is measured. , the output level is detected, the ID of the second amplification unit 53 is added, and stored in the control unit 51 . Parameters E and F are set in the input level adjustment section 215 and the output level adjustment section 216 from the setting section 51-1 so that the input level and the output level for each channel have predetermined values. At this time, as shown in FIG. 9, parameters E and F from setting section 51-1 are set in input level adjustment section 215 and output level adjustment section 216 under the control of MCU 160, respectively. The parameters E and F can be set by remote control in the remote controller 2 as described above. By connecting a setting terminal to the I/F 104a of the control unit 51, the parameters E and F can be set from the setting terminal. As a result, a BS/CS-IF signal adjusted to a predetermined level is output from the terminal 203. FIG.
The input level adjusters 211, 213, 215 and the output level adjusters 212, 214, 216 can be configured by combining circuits capable of adjusting levels and frequency characteristics, such as attenuators, equalizers, gain control circuits, and tilt circuits. A parameter is set for each circuit, and the parameter can be adjusted by electronic control as described above.

The measurement unit 106 has branch outputs 1 and 2 obtained by branching the input and output of the first amplification unit 52, branch outputs 3 and 5 obtained by branching the inputs of the second amplification unit 53 and the third amplification unit 54, and two-way RF signals of branch outputs 1 to 5, which are branch outputs 4 obtained by branching the output of the amplifier, are input. Then, the level of each channel in each branch signal is detected and converted into a digital level signal. The A/D 107 also takes in sensor signals such as voltage, current, and temperature from sensors (not shown) in the first to third amplification units 52 to 54 and converts them into digital signals. The digital level signal output from the measuring section 106 and the digital sensor signal output from the A/D 107 are used as ID-attached monitor signals. Under the control of the MCU 100, the communication I/F 105 packetizes the information of the digital monitor signal and the set parameters, and uses the packet to FSK-modulate the carrier in the frequency band not used in the common listening signal. A communication signal is created and the communication signal is sent to the gateway 13 .

As described above, the input level adjustment sections 211, 213, 215 and the output level adjustment sections 212, 214, 216 of the first to third amplification units 52 to 54 in the bidirectional amplifiers 17, 19, 22, 24 are set to The information of the parameters A to F is sent from the gateway 13 to the cloud 3 and held in the cloud 3 . When it is necessary to adjust the level of any one of the first to third amplification units 52 to 54 in the bidirectional amplification devices 17, 19, 22, and 24 due to environmental changes, etc., the remote control unit 2 By changing the parameters A to F held in 3, the changed parameters A to F are sent to the amplification unit specified by the ID via the Internet 14 and the gateway 13, and the bidirectional The control unit 51 in the amplifier sets the input level adjustment section or the output level adjustment section specified by the ID. In addition, when the amplification unit is installed, the remote control unit 2 accesses the cloud 3 to confirm the parameters set for the installed amplification unit on the display 146, and points out construction errors during installation. be able to.

<Details of the amplification device of the second embodiment>
Next, FIG. 10 is a functional block diagram showing the detailed configuration of the bidirectional amplifier, which is the amplifier of the second embodiment of the present invention applied to the common hearing system 5 of the second embodiment of the present invention. 11. Here, since the bidirectional amplifier 17 and the bidirectional amplifiers 19, 22, and 24 have the same configuration, the functional block diagram showing the detailed configuration of the bidirectional amplifier 17 according to the second embodiment is shown as a representative. is shown in FIG. 10, and FIG. 11 is a functional block diagram showing the configuration of the amplifying unit of the bidirectional amplifying device 17 according to the second embodiment, which is not shown in FIG.
As shown in FIGS. 10 and 11, the bidirectional amplifier 17 according to the second embodiment includes a control unit 51, a first amplification unit 55, a second amplification unit 56 and a third amplification unit . In the control unit 51, a setting section 51-1 realized by executing a control processing program by the CPU 101, an I/O 104 including an I/F 104a, a communication I/F 105, a measuring section 106, and an A/D 107 are shown. there is Further, FIG. 10 shows only the configuration of the amplifier section 55-1 of the first amplifier unit 55, the amplifier section 56-1 of the second amplifier unit 56, and the amplifier section 54-1 of the third amplifier unit 54. Configuration omitted.
10 and 11, the control unit 51, the first amplification unit 55, the second amplification unit 56, and the third amplification unit 54 communicate with each other via the communication bus 17-1 in the same manner as in FIG. It is connected.

A terminal 231 is a terminal to which a mixed signal of an FM broadcast signal and a terrestrial digital broadcast signal is input, and a terminal 232 is a terminal for receiving a BS/CS-IF signal, or a mixed signal of an FM broadcast signal and a terrestrial digital broadcast signal and a BS/BS signal. This is the terminal to which the CS-IF signal is input. The input changeover switch 240 switches to the terminal 231 side to switch to the 11th filter ( Fil 11) is supplied with a mixed signal of the FM broadcast signal and the terrestrial digital broadcast signal, and when the mixed signal of the FM broadcast signal and the terrestrial digital broadcast signal and the BS/CS-IF signal are input to the terminal 232, the terminal 232 side , and a mixed signal of the FM broadcast signal and the terrestrial digital broadcast signal demultiplexed by the thirteenth filter (Fil13) is supplied to Fil11. Fil 11 demultiplexes the FM broadcast signal and supplies it to the amplification section 55-1 of the first amplification unit 55, and demultiplexes the digital terrestrial broadcasting signal and supplies it to the amplification section 56-1 of the second amplification unit 56. .

The FM broadcast signal output at a predetermined output level from the amplifier 55-1 and the terrestrial digital broadcast signal output at a predetermined output level from the amplifier 56-1 are supplied to a twelfth filter (Fil12) and mixed. and supplied to the fourteenth filter (Fil14). The Fil 14 is supplied with the CS/BS-IF signal output at a predetermined output level from the third amplifier 54-1 and mixed with the mixed signal of the FM broadcast signal and the terrestrial digital broadcast signal. The output signal from Fil 14 (mixed signal of FM broadcast signal, terrestrial digital broadcast signal and CS/BS-IF signal) passes through the fifteenth splitter (Sp15) and is output from terminal 233 .

The FM broadcast signal demultiplexed by Fil 11 is supplied to the amplification section 55 - 1 of the first amplification unit 55 . In the amplifier section 55-1, an input level adjustment section 241, an eleventh splitter (Sp11), an eleventh amplifier (Amp11), an output level adjustment section 242, and a twelfth amplifier (Amp12) are connected in cascade. . The branched output 1 obtained by branching the input signal of Amp 11 branched in Sp11 is sent to the measuring section 106, the input level is detected, the ID of the first amplification unit 55 is added, and the output is stored in the control unit 51. be done. Also, the branched output 4 obtained by branching the output signal from Fil 14 branched in Sp15 is sent to the measuring section 106, the output level of each channel is detected, the ID of the bidirectional amplifier 17 is added, and the control unit 51. As a result, the measuring unit 106 can detect the output level of each channel separately for the FM broadcast signal, terrestrial digital broadcast signal, and CS/BS-IF signal. Then, the input level adjustment section 241 and the output level adjustment section 241 and the output level adjustment section are arranged so that the input level of the amplification section 55-1 detected by the measurement section 106 and the output level of the FM broadcast signal detected from the branch output 4 become predetermined values. 242, parameters A and B are respectively set from the setting unit 51-1. At this time, as shown in FIG. 11, the parameters A and B from the setting section 51-1 are set in the input level adjusting section 241 and the output level adjusting section 242 under the control of the MCU 180, respectively. The parameters A and B can be set by remote control in the remote controller 2 as described above. By connecting a setting terminal to the I/F 104a of the control unit 51, the parameters A and B can also be set from the setting terminal. As a result, an FM broadcast signal adjusted to a predetermined level is output from terminal 233 .

The terrestrial digital broadcasting signal demultiplexed by Fil 11 is supplied to the amplifier section 56 - 1 of the second amplifier unit 56 . The amplifier section 56-1 is configured by cascade-connecting an input level adjustment section 243, a thirteenth splitter (Sp13), a thirteenth amplifier (Amp13), an output level adjustment section 244, and a fourteenth amplifier (Amp14). . Then, the branched output 3 obtained by branching the input signal of Amp 13 branched in Sp13 is sent to the measuring section 106, the input level for each channel is detected, the ID of the second amplification unit 56 is added, and the control unit 51 stored within. The input level adjustment unit 243 and the output level adjustment unit 244 are set so that the output level of the terrestrial digital broadcasting signal detected by the measurement unit 106 from the input level for each channel and the branch output 4 becomes a predetermined value. Parameters C and D are set respectively from 51-1. At this time, as shown in FIG. 11, the parameters C and D from the setting section 51-1 are set in the input level adjusting section 243 and the output level adjusting section 244 under the control of the MCU 190, respectively. The parameters C and D can be set by remote control in the remote controller 2 as described above. By connecting a setting terminal to the I/F 104a of the control unit 51, the parameters C and D can be set from the setting terminal. As a result, the CATV downstream signal adjusted to the predetermined level is output from the terminal 233 .

The BS/CS-IF signal demultiplexed by Fil 13 is supplied to the amplification section 54 - 1 of the third amplification unit 54 . The amplifier section 54-1 is configured by cascade-connecting an input level adjustment section 215, a fourth splitter (Sp4), a fifth amplifier (Amp5), an output level adjustment section 216, and a sixth amplifier (Amp6). . Then, the branched output 5 obtained by branching the input signal of Amp 5 branched in Sp4 is sent to the measuring section 106, the input level for each channel is detected, the ID of the second amplification unit 53 is added, and the control unit 51 stored within. Input level adjusting section 215 and output level adjusting section 216 are configured so that the input level for each channel and the output level of the CS/BS-IF signal detected by measuring section 106 from branch output 4 become predetermined values. , parameters E and F are set by the setting unit 51-1. The parameters E and F can be set by remote control in the remote controller 2 as described above. By connecting a setting terminal to the I/F 104a of the control unit 51, the parameters E and F can be set from the setting terminal. As a result, a BS/CS-IF signal adjusted to a predetermined level is output from the terminal 203. FIG.
The input level adjusters 241, 243, 215 and the output level adjusters 242, 244, 216 can be configured by combining circuits capable of adjusting levels and frequency characteristics, such as attenuators, equalizers, gain control circuits, and tilt circuits. A parameter is set for each circuit, and the parameter can be adjusted by electronic control as described above.

The measurement unit 106 includes a branch output 1 obtained by branching the input and output of the first amplification unit 55, branch outputs 2 and 3 obtained by branching the inputs of the second amplification unit 56 and the third amplification unit 54, and a bidirectional amplifier. RF signals of branch outputs 1 to 4, which are branch outputs 4 obtained by branching the outputs of 17, are input. Then, the level of each channel in each branch signal is detected and converted into a digital level signal. The A/D 107 also takes in sensor signals such as voltage, current, and temperature from sensors (not shown) in the first amplification unit 55, the second amplification unit 56, and the third amplification unit 54, and converts them into digital signals. The digital level signal output from the measuring section 106 and the digital sensor signal output from the A/D 107 are used as ID-attached monitor signals. Under the control of the MCU 100, the communication I/F 105 packetizes the information of the digital monitor signal and the set parameters, and uses the packet to FSK-modulate the carrier in the frequency band not used in the common listening signal. A communication signal is created and the communication signal is sent to the gateway 13 .

As described above, the input level adjusting sections 241, 243, 215 and the output level adjusting section 242 of the first amplifying unit 55, the second amplifying unit 56 and the third amplifying unit 54 in the bidirectional amplifying devices 17, 19, 22, 24 , 244 and 216 are sent from the gateway 13 to the cloud 3 and held in the cloud 3 . When it is necessary to adjust the level of any one of the first amplification unit 55, the second amplification unit 56, and the third amplification unit 54 in the bidirectional amplification devices 17, 19, 22, and 24 due to an environmental change or the like, By changing the parameters A to F held in the cloud 3, the remote control unit 2 sends the changed parameters A to F to the amplification unit specified by the ID via the Internet 14 and the gateway 13, The control unit 51 of the bidirectional amplifying apparatus including the amplifying unit is set to the input level adjusting section or the output level adjusting section specified by the ID. In addition, when the amplification unit is installed, the remote control unit 2 accesses the cloud 3 to confirm the parameters set for the installed amplification unit on the display 146, and points out construction errors during installation. be able to.

<Multi-hop communication>
By the way, in the building common hearing system 1 of the first embodiment equipped with the amplifying device of the present invention, the communication signal is transmitted from the gateway 13 to the bidirectional amplifying devices 17, 19, 22, 24, or is bidirectionally amplified. The communication signals transmitted from the control units 51 of the devices 17, 19, 22, and 24, respectively, go up to the gateway 13. will pass through However, in the bidirectional amplifiers 17 and 19, there is no path for amplifying the communication signal using the carrier of the frequency band (for example, 920 MHz) not used for the co-listening signal (see FIG. 8). Therefore, there is a risk that the bidirectional amplifiers 19, 22, 24 or the gateway 13 will not be reached. Therefore, in the building common hearing system 1 of the first embodiment equipped with the amplifying device of the present invention, the communication signal is amplified and relayed by the two-way amplifying devices 17 and 19 by multi-hop communication in order to compensate for the attenuation. . A communication signal obtained by FSK-modulating a carrier in a frequency band (for example, 920 MHz) not used in the common listening signal is communicated by asynchronous communication, and the bidirectional amplifiers 17, 19, 22, and 24 asynchronously transmit the communication signal. are sending and receiving
FIG. 12(a) is a functional block diagram showing the configuration for multi-hop communication in the bidirectional amplifiers 17 and 19, and FIG. 12(b) is an outline of the multi-hop communication path. In FIG. 12(a), the configuration of the bidirectional amplifier 17 shown in FIG. 8 is omitted.
In the route of multi-hop communication shown in FIG. Packets designated as destination information for the device itself are captured, and communication signals not captured are level-adjusted to a predetermined output level and sent to transmission lines toward bidirectional amplifiers 19, 22, and 24. . Further, the communication signal reaching the bidirectional amplifier 19 is fetched as a packet of destination information for itself, and the communication signal not fetched is level-adjusted so as to have a predetermined output level. is sent out on the transmission line toward Furthermore, the communication signal that has reached the bidirectional amplifier 22 (24) is fetched as a packet of destination information for itself.
Also, in the multi-hop communication path shown in FIG. The level is adjusted and sent to the transmission line toward the bidirectional amplifier in the next stage, and at the bidirectional amplifier that arrives, the communication signal whose source information is a packet of the own device is asynchronous from the own device and specified. The output level is sent to the transmission line toward the bidirectional amplifier in the next stage. This ensures that the communication signal sent out to the transmission line reaches the gateway 13 .

In the case of a communication signal sent from the gateway 13 to the transmission line toward the bidirectional amplifiers 17, 19, 22, 24 in single-hop communication in which the level of the communication signal is not adjusted in the bidirectional amplifiers 17, 19 before being sent out, the communication Although the signal reaches the route a from the gateway 13 to the bidirectional amplifier 17, the communication signal does not normally reach the routes b and c due to severe attenuation. On the other hand, in the case of multi-hop communication in which communication signals are level-adjusted and relayed in bidirectional amplifiers 17 and 19, the communication signals are not attenuated in bidirectional amplifiers 17 and 19, respectively. , the communication signal can reliably reach the route a and the routes b and c from the gateway 13 to the bidirectional amplifier 17 .
The same applies to the communication signals sent from the bidirectional amplifiers 17, 19, 22, and 24 to the transmission line toward the gateway 13. Although it reaches, it does not reach the gateway 13 . On the other hand, in the case of multi-hop communication, since the level of the communication signal is adjusted in the bidirectional amplifiers 17 and 19 and relayed, the signal reaches the gateway 13 reliably.

To explain the multi-hop communication in detail, point A shown in FIG. It is connected to point B, which is the connection point between Fil2 and Fil4 shown. A communication signal sent from the gateway 13 is input to a terminal 202 shown in FIG. F105 is supplied. Under the control of the MCU 100, the communication I/F 105 takes in a packet of destination information directed to the bidirectional amplifier that has received the communication signal, and adjusts the level of the supplied communication signal to a predetermined output level. Then, it is sent out from the communication I/F 105 toward the next-stage bidirectional amplifier. The transmitted communication signal passes through the communication signal extraction filter 221 and reaches the B point. Then, it passes through Fil4 and is output at a predetermined output level from the terminal 203 via Sp5.

A communication signal sent out to the gateway 13 is input to a terminal 203 shown in FIG. It is supplied to the communication I/F 105 of the unit 51 . Under the control of the MCU 100, the communication I/F 105 adjusts the level of the supplied communication signal so that it reaches a predetermined output level and outputs it. communication signal is asynchronously sent from the communication I/F 105 . The transmitted communication signal passes through the communication signal extraction filter 221 and reaches the A point. Then, it is output at a predetermined output level from the terminal 202 through Fil3.

Next, the fact that the communication signal may not reach the gateway 13 is the same for the in-building common hearing system 5 of the second embodiment equipped with the amplifying device of the present invention, and will be explained with reference to FIG. Then, in the case of single-hop communication, the communication signal sent from the gateway 13 to the bidirectional amplifiers 17, 19, 22, and 24 on the transmission line reaches the route a from the gateway 13 to the bidirectional amplifier 17. However, the communication signals do not normally reach the routes b and c due to severe attenuation. Although the signal reaches both amplifiers in the stage, it does not reach the gateway 13 . On the other hand, in the case of multi-hop communication, communication signals sent from the gateway 13 to the transmission lines toward the bidirectional amplifiers 17, 19, 22, and 24 are sent from the gateway 13 through paths a, b, and c. The communication signal reliably reaches the bidirectional amplifier and is transmitted from the bidirectional amplifiers 17 , 19 , 22 , 24 to the transmission line toward the gateway 13 , and reliably reaches the gateway 13 .

Specifically, FIG. 12(a) shows a functional block diagram for performing multi-hop communication with the two-way amplifiers 17 and 19 in the building common hearing system 5 of the second embodiment equipped with the amplifier of the present invention. The configuration is the same as that shown in .
Point A shown in FIG. 12(a) is connected to point A, which is the connection point between the input changeover switch 240 and Fil13 shown in FIG. 10, and point B is the connection point between Fil12 and Fil14 shown in FIG. Connected to point B.
A communication signal sent from the gateway 13 is input to a terminal 232 shown in FIG. F105 is supplied. Under the control of the MCU 100, the communication I/F 105 takes in a packet of destination information directed to the bidirectional amplifier that has received the communication signal, and adjusts the level of the supplied communication signal to a predetermined output level. and sent from the communication I/F 105 to the next-stage bidirectional amplifier. The transmitted communication signal passes through the communication signal extraction filter 221 and reaches the B point. Then, it passes through Fil14 and is output at a predetermined output level from the terminal 233 via Sp15.

The communication signal sent out to the gateway 13 is input to the terminal 233 shown in FIG. 10, passes through Sp15 and Fil14, and reaches point B. Only the communication signal is extracted by the communication signal extraction filter 220 and controlled. It is supplied to the communication I/F 105 of the unit 51 . Under the control of the MCU 100, the communication I/F 105 adjusts the level of the supplied communication signal so that it reaches a predetermined output level and outputs it. communication signal is asynchronously sent from the communication I/F 105 . The transmitted communication signal passes through the communication signal extraction filter 221 and reaches the A point. Then, it is output at a predetermined output level from the terminal 232 through Fil13.
As described above, multi-hop communication can be performed in the in-building common hearing system 1 of the first embodiment equipped with the amplifying device of the present invention and in the in-building common hearing system 5 of the second embodiment equipped with the amplifying device of the present invention. can compensate for the attenuation of the communication signal, and the communication signal reaches the final-stage bidirectional amplifier or gateway 13 without fail.

<Usage example of the in-building common hearing device of the first embodiment>
Next, a usage example of the in-building shared hearing system 1 of the first embodiment of the present invention will be described. Only the configuration for explaining this usage example is shown in FIG. The configuration shown in FIG. 13 is only the configuration of the home 300 to which the distributed signal distributed by the splitter/distributor 23 is supplied. , and other configurations are omitted.
In the example of use shown in FIG. 13, the common listening signal distributed by the splitter/distributor 23 is supplied to the distributor 311 in the home 300, and the common listening signal distributed by the distributor 311 is distributed to the coaxial signals in the series units. It is supplied to a plurality of TV terminals 312 that are used as terminals. A television receiver (TV) 320 is connected to one of the television terminals 312 , and a CATV modem 321 is connected to the other television terminal 312 . A measurement unit 322 of the present invention is connected to one of the TV terminals 312 . When the measuring unit 322 of the present invention is connected to one of the TV terminals 312, the output level of the amplifying device of the present invention provided in the common hearing system 1 of the first embodiment of the present invention is increased as described below. Levels will be adjusted automatically.

FIG. 15 shows a functional block diagram showing the configuration of the measuring unit 322 of the present invention. The measurement unit 322 shown in FIG. 15 has a coaxial connector 334 attached to the television terminal 312, and measures each of the CATV upstream signal, the CATV downstream signal, and the CS/BS-IF signal in the common listening signal input to the coaxial connector 334. The level of each channel is detected by the level measuring section 332 under the control of the MCU 331 and converted into a digital level signal, which is stored in the memory within the MCU 331 . Under the control of the MCU 331, the communication I/F 333 puts the stored level signal on the above-described communication signal and sends it out through the TV terminal 312 and the splitter/divider 23 to the transmission line of the common hearing system in the building. The communication signal sent out to the transmission line is received by the control unit 51 in the bidirectional amplifiers 17, 19, 22, 24 which are the amplifiers of the present invention, and detects whether the level signal is at a predetermined output level. do. Then, when a signal in a frequency band that does not have a predetermined output level is detected, the control unit 51 adjusts the parameters of the input level adjustment section and the output level adjustment section of the amplification unit to which the frequency band is assigned. As a result, level adjustment is automatically performed so that the output level of the signal in the frequency band is at a predetermined output level. As a result, by connecting the measurement unit 322 to any one of the TV terminals, a CATV upstream signal, which is a common listening signal output from all the TV terminals provided in the in-building common hearing device 1 of the first embodiment of the present invention, can be obtained. , the CATV downstream signal and the CS/BS-IF signal are automatically adjusted to a predetermined output level.
In the above explanation, the distributed signal from the branch/distributor 23 is used. 322, the CATV upstream signal, CATV downstream signal, and CS/BS signals output from all the TV terminals provided in the in-building community hearing system of the first embodiment of the present invention, as described above. - The output level of the IF signal is automatically adjusted to a predetermined output level.

<Usage example of the shared hearing device in the building of the second embodiment>
Next, a usage example of the in-building shared hearing device 5 of the second embodiment of the present invention will be described. FIG. 14 shows only the configuration for explaining this usage example. The configuration shown in FIG. 14 is only the configuration of the home 300 to which the distributed signal distributed by the splitter/distributor 23 is supplied. , and other configurations are omitted.
In the example of use shown in FIG. 14, the common listening signal distributed by the splitter/distributor 23 is supplied to the distributor 311 in the home 300, and the common listening signal distributed by the distributor 311 into a plurality of coaxial signals in the series units. It is supplied to the television terminal 312 used as a terminal. A television receiver (TV) 320 is connected to one of the television terminals 312 , and an FM receiver 323 is connected to the other television terminal 312 . A measurement unit 322 of the present invention is connected to one of the TV terminals 312 . When the measuring unit 322 of the present invention is connected to one of the TV terminals 312, the output level of the amplifying device of the present invention provided in the common hearing system 5 of the second embodiment of the present invention is increased as described below. Levels will be adjusted automatically.

Here, the configuration of the measurement unit 322 of the present invention is as shown in FIG. A measurement unit 322 shown in FIG. 15 is attached to the television terminal 312 and a common listening signal is input to the coaxial connector 334 . Common listening signals are FM broadcast signals, terrestrial digital broadcasting signals, and CS/BS-IF signals, and the level of each channel in the common listening signals is detected by a level measuring section 332 under the control of the MCU 331 and digitally converted. This level signal is stored in the memory within the MCU 331 . Under the control of the MCU 331, the communication I/F 333 puts the stored level signal on the above-described communication signal and sends it out through the TV terminal 312 and the splitter/divider 23 to the transmission line of the common hearing system in the building. The communication signal sent out to the transmission line is received by the control unit 51 in the bidirectional amplifiers 17, 19, 22, 24 which are the amplifiers of the present invention, and detects whether the level signal is at a predetermined output level. do. Then, when a signal in a frequency band that does not have a predetermined output level is detected, the control unit 51 adjusts the parameters of the input level adjustment section and the output level adjustment section of the amplification unit to which the frequency band is assigned. As a result, level adjustment is automatically performed so that the output level of the signal in the frequency band is at a predetermined output level. As a result, by connecting the measurement unit 322 to any one of the TV terminals, an FM broadcast signal, which is a common listening signal output from all the TV terminals provided in the in-building common hearing device 5 of the second embodiment of the present invention, can be obtained. Then, the output levels of the terrestrial digital broadcasting signal and the CS/BS-IF signal are automatically adjusted to a predetermined output level.
In the above explanation, the distributed signal from the branch/distributor 23 is used. 322, the FM broadcast signal, terrestrial digital broadcast signal and CS/ The output level of the BS-IF signal is automatically adjusted to a predetermined output level.

In the in-building common hearing apparatus according to the present invention, which includes the amplifier apparatus of the embodiment of the present invention, it has been explained that the gateway sends monitor signals and parameter information to the cloud. Alternatively, parameter information may be sent directly.
Also, although the communication bus in the bidirectional amplifier, which is the amplifier of the embodiment of the present invention, has been described as RS485, it is not limited to this, and the communication bus is serially connected using a two-line balanced transmission line. All you have to do is
Furthermore, communication signals can be communicated by asynchronous communication employing CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance).
The "in-building common hearing device" according to the present invention, which includes the amplifying device according to the present invention, includes a common hearing device installed in buildings such as buildings, collective housing, and condominiums, and a common hearing device installed in a detached building. The number of bi-directional amplifiers and splitters/dividers is not limited to the number described above, and can be freely selected according to the scale and facilities of the building. can be the number of

1 common hearing device in building, 2 remote control unit, 3 cloud, 5 common hearing device in building, 10 BS/CS antenna, 11, 12, 15 mixer, 11a FM antenna, 11b UHF antenna, 13 gateway, 14 Internet, 17, 19, 22, 24 bidirectional amplifier, 17-1 communication bus, 18, 20, 21, 23, 25 distributor, 51 control unit, 51-1 setting unit, 52, 55 first amplification unit, 52- 2 sensors, 53, 56 second amplification unit, 53-1, 54-1, 55-1, 56-1 amplification section, 54 third amplification unit, 100, 130, 140, 150, 160, 170, 180, 190 , 331 MCU, 101, 131, 141, 171 CPU, 102, 132, 142, 172 ROM, 103, 133, 143, 173 RAM, 104, 134 144, 174 I/O, 104a I/F, 105, 178, 333 Communication I/F, 106 Measurement unit, 107 A/D converter, 108, 137, 148, 179 Bus, 145, 175 Input device, 146, 176 Display, 147, 177 Wide area communication I/F, 201, 202, 203, 231, 232, 233 terminals 210, 240 input changeover switch 211, 213, 215, 241, 243 input level adjustment section 212, 214, 216, 242, 244 output level adjustment section 220 communication signal extraction filter, 221 communication signal extraction filter, 300 home, 311 distributor, 312 television terminal, 320 television receiver, 321 CATV modem, 322 measurement unit, 323 FM receiver, 332 level measurement unit, 334 coaxial connector, 1010 CATV station, 1011 main line Equipment, 1012 Tap-off, 1013 Safety device, 1100 In-building common hearing device, 1101 Bidirectional branch amplifier, 1103 BS/CS antenna, 1105, 1108 Bidirectional branch amplifier, 1106 Branch, 1107, 1109 Distributor, 1110 ~ 1115 series unit, 1116 terminating resistor

Claims (3)

An in-building common hearing device comprising an amplifying device for amplifying a common listening signal provided on a transmission line of the in-building common hearing device and a gateway connected to a public communication network,
The amplification device is
An amplifier section for amplifying signals of a plurality of frequency bands constituting the common listening signal for each frequency band, an input level adjustment section for electronically adjusting the input level according to the set parameters, and an output level according to the set parameters. a plurality of amplifier units each having an output level adjustment section that can electronically adjust the
a setting unit for setting parameters in the input level adjustment unit and the output level adjustment unit in the plurality of amplification units; a control unit having an interface unit including a measurement unit that converts into a digital signal indicating, an interface that connects to the plurality of amplification units, and an interface that can be connected to a setting terminal;
a communication means for transmitting a communication signal using a frequency band not used in the community signal to the gateway via the transmission line ;
In the control unit, the digital signal from the measurement unit can be sent to the setting terminal via the interface unit, and the output levels of the plurality of amplification units are set to a predetermined value. a setting value adjusted by the terminal can be acquired via the interface unit, and when the setting value is acquired, the setting unit uses the acquired setting value as the parameter, the input level adjustment unit and is set in the output level adjustment unit, and transmits the digital signal from the measurement unit of the control unit to the gateway on the communication signal,
The gateway extracts the digital signal from the received communication signal and sends it to a public communication network, remote control means connected to the public communication network can receive the digital signal, and the remote control means can receive the digital signal. A remote setting value set so that the output level of the amplifying unit becomes a predetermined value can be sent from a public communication network to the gateway, and the gateway receives the remote setting value from the public communication network. In this case, the gateway sends the received remote set value to the amplifying device in the communication signal, and the amplifying device extracts the remote set value from the received communication signal and uses the input level adjuster and the output as the parameter. An in-building common hearing device, characterized by being set in a level adjustment section. In the control unit, when the range of output levels from the setting terminal set so that the output levels of the plurality of amplification units are set to a predetermined value is acquired through the interface section, the acquired The output level range is sent to the plurality of amplification units, and the parameters are electronically controlled in the input level adjustment section and the output level adjustment section so that the output level falls within the output level range. The in-building shared hearing device according to claim 1 . A measurement unit connectable to a television terminal to which the common listening signal from the in-building common hearing device according to claim 1 or 2 is supplied ,
measuring means capable of measuring an output level value of the common listening signal output from the television terminal;
A communication means capable of transmitting a communication signal using a frequency band not used in the common listening signal output from the television terminal,
When connected to the television terminal, the communication signal carrying the output level value of the common listening signal output from the television terminal measured by the measuring means is sent from the communication means to the transmission line, Item 1 or 2. When the amplifying device in the indoor communal hearing system according to item 1 or 2 receives the communication signal, the amplifying device extracts the output level value from the received communication signal, and controls the input level adjustment unit and the output level. The measuring unit, wherein the adjusting section electronically controls the parameter so that the output level value becomes a predetermined output level value.

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