JP2523666Y2 - Joint hearing facility status monitor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a status monitor for monitoring the status of each CATV amplifier used in a television broadcasting joint listening facility.

[0002]

2. Description of the Related Art Conventionally, in a joint hearing facility (hereinafter referred to as CATV), a television broadcast signal received by an antenna 10 is supplied from a head end 12 to a main line 14 as shown in FIG. The television broadcast signal transmitted through the main line 14 is amplified by respective CATV amplifiers 16 such as a distribution amplifier and a branch amplifier interposed in the main line 14, and these CAT
The signals are branched or distributed from the V amplifier 16 to branch lines 18, respectively. These branch lines 18 also have the same C
An ATV amplifier 20 intervenes, and a television broadcast signal branched or distributed to another branch line 18 from the ATV amplifier 20
2 to the television receiver 24 of the terminal. In such a CATV, each CATV amplifier 16,
It may be necessary to monitor and control the status of 20. In such a case, a CATV status monitor is used. This device uses CA
As shown in FIG. 7A, between a center device including a central computer 26 and a central modem 28 installed in a TV center and a status control communication device 30 installed in each of the CATV amplifiers 16 and 20. First, the first polling data from the central computer 26 of the center device is modulated by the central modem 28, and the respective CATV amplifiers 16 and 20 are modulated.
Is transmitted to the status control communication device 30, the one corresponding to the first polling data among the communication devices 30 is, as shown in FIG.
Modulating and transmitting the first response data representing the 20 situations;
Supply to central modem 28. The central modem 28 demodulates this into first response data and supplies it to the central computer 26. The central computer 26 displays the first response data, and transmits the second polling data corresponding to another status control communication device 30 in the same manner as described above. Thereafter, similarly, bidirectional data communication is performed between the central center device and each status control communication device 30, and various information of each CATV amplifier 16, 20 is displayed on the display of the central computer. The various types of information include a downlink pilot signal level, an uplink pilot signal level, a temperature in a housing, and the like. Also, at the time of transmitting the polling data, if control information for the CATV amplifiers 16 and 20 is added thereto, for example, information for switching to a spare unit in the CATV amplifier, the control is performed on the CATV amplifier. That is, confirmation and control of various operation states of the CATV amplifiers 16 and 20 can be performed by the center device.

[0003]

However, in such a CATV status monitor device, for example, when an abnormality occurs in an amplification unit or the like due to a wave stop in a joint hearing facility or the operation of the CATV amplifiers 16 and 20. In addition, the person who received the notification had to go to the center, check the status of the abnormality based on the display of the center device, estimate the location of the abnormality, and then take the troublesome work of coping with it.

The present invention has been made in view of the above circumstances, and even if the above-described abnormality occurs, the status can be known by an arbitrary terminal device, and a status monitor for a joint hearing facility capable of promptly responding. The purpose is to provide a subsystem device.

[0005]

Means for Solving the Problems The invention according to claim 1 is:
Television broadcast signals to each terminal in the joint viewing facility area
Installed in the center of the joint hearing facility that transmits
-Call each amplifier in the joint hearing facility area from the device
Modulate the first frequency signal with polling data for
And send it to the above polling data of each amplifier.
From the status control communication device of the corresponding
Response data containing various information about the second frequency
By modulating and transmitting the signal,
Communication between the device and each of the above status control communication devices.
The status monitor system
The second side from each of the status control communication devices
Demodulation of a signal having a frequency of
And the response data from the first demodulation unit and the center
-The third frequency with the polling data from the device
Modulation for modulating the signal and transmitting it to the joint hearing facility area
And a second unit for demodulating a signal of a third frequency.
Based on the demodulation output of the second demodulation unit and the demodulation output of the second demodulation unit.
And a display for displaying the operating status of each amplifier.
The device is installed in the joint hearing facility area.
It is. The invention according to claim 2 has the above-described stay.
In the TAS monitor system,
Is the second frequency from each of the status control communication devices.
Demodulation section for demodulating the number of signals into the response data,
The response data from the control unit and the
The data combined with the polling data is sent via telephone line.
And a first telephone line modem for communication
A second telephone receiving a signal transmitted through the telephone line
Line modem and the output of this second telephone line modem.
And a display unit for displaying the operation state of the amplifier.
Provided with a terminal device.

[0006]

According to the first aspect of the present invention, each status control is performed.
The signal of the second frequency transmitted from the communication device is demodulated.
Is obtained by the first demodulation unit,
This and the polling data from the center unit
Is modulated and transmitted. The terminal device
Is obtained by the second demodulation unit and displayed.
It is displayed in the section. According to the invention of claim 2, claim 1
Response data obtained by the demodulation unit in the same manner as described in the invention,
Polling data from the center device and the first telephone line
To the telephone line using the modem for the second telephone line.
Dem receives this and, based on its output,
The operation state is displayed on the display unit of the terminal device.

[0007]

FIG. 1 is a block diagram of a center device according to an embodiment of the system of the present invention. In the figure, a center device includes a central computer 1, a first modulator 2, a first demodulator 3
And an OR circuit 4 and a second modulation unit 5.
The central computer 1 corresponds to the central computer 26 of the conventional device shown in FIG.
Corresponds to the central modem 28. Therefore, the output of the first modulator 2 is supplied to the head end 12 via the distributor 8, and the status data signal from the terminal is supplied to the first demodulator 3 via the distributor 8 from the head end 12. Is done.

[0008] polling data from the central computer 1, a first frequency signal at a first modulation unit 2, for example, by modulating the signal of 71.1MHz, is supplied to the head-end 12 shown in FIG. From now on, each CATV amplifier 16,
20 is transmitted to the status control communication device 30.
The status control communication device 30 corresponding to the polling data outputs a second frequency signal, for example, 42.
Status data signals 5MHz is originated transmitted, first
The data is demodulated by the demodulation unit 3, and the central computer 1 performs reception processing as response data, and performs processing such as display. Further, the previously transmitted polling data and the corresponding response data are input to the OR circuit 4 and synthesized into (polling data + response data) as shown in FIG. And a third frequency signal, for example, 74.4M
Hz signal, and the CATV
Is transmitted to each terminal.

FIG. 2 is a block diagram of the terminal device 9 of one embodiment of the system of the present invention. This terminal device 9 is shown in FIG.
Is provided in at least one terminal of CATV, for example, as indicated by a dotted line. In FIG. 2, the combined data is demodulated by a second demodulation unit 6, supplied to a computer 7 of a terminal device 9, and displayed on a display 1 as display means.
1 is displayed on the screen. Thereby, each CATV amplifier 1
The operation status of 6 and 20 is not the center device side but CAT
V can be grasped at one terminal somewhere.

In the embodiment shown in FIG. 1, the output of the second modulator 5 is supplied to the CATV. However, instead of the second modulator 5, a first telephone line modem 50 is used as shown in FIG. To the terminal device 9 via the telephone line. Further, in the embodiment of FIG. 2, the second demodulation unit 6 is used in the terminal device 9. However, as shown in FIG.
Use 1. As a result, the synthesized data is supplied to the computer 7 of the terminal device 9 via the telephone line, and is displayed on the screen of the display 11 as display means.
As a result, the operating status of each CATV amplifier 16, 20 can be grasped not at the center device but at one terminal of the CATV. Other configurations are the same as those of the embodiment of FIGS. In this case, the terminal device 9 does not necessarily need to be provided in a CATV terminal, and can be installed in any location.

[0011]

[Effect of the Invention] As described above, claims 1 and 2
In the above-mentioned device, if any abnormality occurs in the amplification unit etc. due to the interruption of the wave at the joint hearing facility or the operation of the amplifier, it can be obtained at the center device by the terminal device installed at a place away from the center device Since the same information as the information on each amplifier can be obtained, it is not necessary to go to the center device to obtain the information each time, and it is possible to quickly deal with the information at the site. Moreover, according to the inventions of claims 1 and 2,
Amplifiers that can be obtained at the center device with terminal equipment
Claim 1 to obtain the same information as
In the device according to the present invention, the signal from the first demodulation unit is provided.
, The response data from the demodulator together with the polling data
It is only supplied to the modulation section,
Is the response data from each status control communication device.
No need to process data. Therefore, the burden on the center device
Becomes lighter. Moreover, according to the invention of claim 1, the terminal device
Special terminal equipment to send information about each amplifier to the
There is no need to call the device. Generally, from the center device to the end
When transmitting data to a terminal device, the first
Since frequency signals are used, the terminal device must be polled.
Address, it is necessary to give an address.
You. However, according to the first aspect of the present invention, at the first frequency
Is sending data to the terminal on the third frequency
It is not necessary to give an address to the terminal device.
The load on the monitoring device is reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram of a center device of a system according to an embodiment of the present invention;

FIG. 2 is a block diagram of a terminal device of the system according to the embodiment of the present invention;

FIG. 3 is a block diagram of a center device of the system according to the embodiment of the present invention;

FIG. 4 is a block diagram of a terminal device of the system according to the embodiment of the present invention;

FIG. 5 shows data obtained by combining the polling data and the response data of the terminal according to the first embodiment.

FIG. 6 shows a CAT provided with a conventional status monitor device.
FIG. 5 is a block diagram of V.

FIG. 7A shows conventional polling data,
(B) shows response data of the terminal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Central computer 2 1st modulation part 3 1st demodulation part 4 OR circuit 5 2nd modulation part 6 2nd demodulation part 7 Computer 11 Display (display means) 50 1st telephone line modem 51 2nd telephone line modem

Claims (4)

(57) [Scope of request for utility model registration] 1. A Joint acousto-optic transmitting a television broadcast signal to each terminal of the facility in the area co acousto-optic facilities of the installed centers instrumentation placed et the center, each A joint acousto-optic facilities area
The first frequency in the polling data to call the pump
This signal is transmitted after being modulated.
Communication device for status control of ring data
Response data containing various information about the amplifier
By modulating and transmitting the signal of the second frequency,
The center device and the status control communication devices
In the status monitor system for performing communication between the above, each of the status control communication devices is provided on the center side.
Demodulates the signal of the second frequency from the above into the response data
A first demodulation unit, and the response data from the first demodulation unit;
Third with the polling data from the center device
And modulate the signal at the frequency of
A second demodulation unit for demodulating a signal of a third frequency, and a second demodulation unit for demodulating a signal of a third frequency.
2 based on the demodulation output of the demodulation unit 2
And a display unit for displaying the status.
A joint hearing facility status monitor installed in the viewing facility area . From wherein cell center apparatus installed in the center of the joint acousto-optic facilities for transmitting a television broadcast signal to each terminal in the joint acousto-optic facilities area from centers side joint hearing
Polling data for calling each amplifier in the visual facility area
The first frequency signal is modulated by the data and transmitted.
Of the pumps corresponding to the polling data
From the communication device for status control
Modulates the second frequency signal with response data including
By doing so, the center device and each of the stators
Status monitor that communicates with the
In the center system, each of the status control communications is
Demodulates a signal of the second frequency from the device to the above response data
And the response data from the first demodulation unit
Combined with the above polling data from the center device
For the first telephone line that communicates the
And a second telephone for receiving a signal communicated through the telephone line.
To the output of the modem for the talk line and the modem for the second telephone line
A display unit for displaying the operation state of the amplifier based on the
, A joint monitoring facility status monitor device provided with a terminal device. Wherein said modulation unit is provided in the center apparatus of the joint acousto-optic facilities, wherein said second demodulation unit is connected to at least one of said terminal joint acousto-optic facilities The joint monitoring facility status monitor device according to claim 1, wherein Wherein said first telephone line modem is provided in the center device co acousto-optic facilities, provided in at least one of the terminal side of the modem for the second telephone line is co acousto-optic facilities
Joint acousto-optic facilities status monitoring apparatus according to claim 2, wherein that you are.