JPH04154227A - Relay monitoring device for broadcasting radio wave - Google Patents

Abstract

PURPOSE:To collect detailed monitored data by demodulating received broadcasting radio wave, converting the wave to a digital wave, and sending the converted digital wave to an external device. CONSTITUTION:A first sending section 34 modulates a signal representing state change contact point information demodulated by a VHF reception section 30 in order to send the modulated signal to a cable communication (telephone) channel 36 and outputs it. A second sending section 48, in order to send an audio signal demodulated by a tuner 44 in a realtime mode to the communication channel 36, modulates the demodulated audio signal and outputs it. That is, after a reception signal 30 demodulates received broadcasting radio wave and converts the demodulated analog signal digitally, the converted digital signal is sent to an external device via the sending means 48. Thus, a monitor facility installed outside can directly catch up the state of the broadcasting radio wave received by the reception means 30. In particular, in case of television radio wave, since an external monitor device can catch up the state of an image received by the receiving means 30, detailed state and image quality can also be monitored.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a relay monitoring device for broadcast waves.

(Prior Art) In the case of broadcast radio waves, especially radio waves with a short range such as television waves, the existence of areas where viewing is difficult due to transmission output, topography, etc. cannot be avoided. To solve this problem, broadcasting companies are installing relay stations (satellite stations) to expand and secure their service areas. Satellite stations are often installed on mountaintops that are uninhabited and have inconvenient transportation, and various methods have been proposed for monitoring the radio waves transmitted by the satellite stations. The conventional method will be explained with reference to FIG.

The first method is the service area 10 of the satellite station 100.
A system in which a telephone inquiry is made from a station 106, which is a monitoring center, to a commissioned monitoring station 104 set up within 2, and the satellite station 100's broadcast radio waves are received on a television, and the answer is as to whether there has been an accident, image quality, and sound quality. It is.

The second method was developed and put into practical use by the applicant of the present invention, in which fault contact information of the satellite transmitter 108 of the satellite station 100 is transmitted to the transmitting station 1 by one wave 110 of the VHF radio telephone.
Send it to 12 once. This transmitting station 112 is a satellite station 10
It is installed to transmit the signal to the satellite station 100 that broadcasts the signal. - The failure contact information sent to the transmitting station 112 is sent to the wood chip 106 via the micro circuit 114 connecting the wood chip 106 and the transmitting station 112, and is provided to the central monitoring device 116 as monitoring data.Furthermore, Third
As a method, the satellite station loO and the wood chips 106 are connected via a communication line (telephone line), and the fault contact information of the satellite broadcaster 108 is directly sent to the central monitoring system 2 of the home station 106.
In this method, the data is sent to 116 and used as monitoring data.

(Problems to be Solved by the Invention) However, the conventional one-wave monitoring method of the satellite station described above has the following problems.

In the first method, the entrusted monitor is not an expert in most cases, and detailed monitoring data cannot be collected. In addition, it is difficult or impossible to make inquiries about wood chips late at night, early in the morning, or when contracted monitors are out of town, making it impossible to maintain a constant monitoring system.

The second method is limited to transmitting stations or satellite stations where wood chips and wireless telephone lines can be secured. This method cannot be used in satellite stations that correspond to substations of transmitting stations. Moreover, the failure contact information only indicates a certain failure state with respect to a certain function of the satellite device, and cannot detect data regarding detailed abnormalities in image quality, for example.

Although the third method can solve the problem of the second method that it cannot be adopted by all satellite stations, it is the same in that it sends the failure contact information of the satellite equipment to the wood chips. Therefore, it is still not possible to detect data regarding detailed abnormalities.

Therefore, an object of the present invention is to provide a relay monitoring device for broadcast waves that can constantly monitor the broadcast waves of a satellite station and that can monitor the state of the broadcast waves in detail.

(Means for solving problems) In order to solve the above problems, the present invention includes the following configuration.

That is, a receiving means demodulates the received broadcast radio waves, a converting means digitally converts the analog signal demodulated by the receiving means, and the digital signal converted by the converting means is modulated and transmitted to the outside by wire or wireless method. In particular, in the case of a television satellite station characterized by comprising a transmitting means for transmitting, the broadcast radio wave is a television radio wave,
The converting means may digitally convert at least a video signal among the signals included in the television radio waves; The video signal may be transmitted as a still image signal at a predetermined timing.

(effect) The effect will be explained.

After demodulating the broadcast radio waves received by the receiving means and converting the demodulated analog signals into digital signals, the state of the broadcast radio waves received by the receiving means is monitored at an external monitoring facility in order to send the demodulated analog signals to the outside via the transmitting means. You can know directly. In particular, in the case of television radio waves, it becomes possible to know the state of the image received by the receiving means, so that the detailed situation and image quality can also be monitored.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this embodiment, the television broadcast radio waves of the satellite station 100 are monitored by a relay monitoring device according to the present invention installed at a commissioned monitoring station 104. An example will be described in which monitoring data is created and sent to the central monitoring device 116 provided in the main office 106 via a communication line (wired telephone line) (see FIG. 6).

FIG. 1 shows the configuration of a satellite station 100.

The satellite station 100 is equipped with a satellite broadcasting device 10B and a failure contact information monitoring device 10.

A satellite broadcaster 108 broadcasts television broadcast waves 12 from an antenna 14. The state change contact information monitoring device 10 is provided in the satellite broadcasting device 108 and is operated when a failure occurs.
This is a device that detects the state of the contacts 16, which are N or OFF. Note that in this embodiment, the contact points 16... are 1
There are 6 of them, making it possible to detect 16 types of state changes, including abnormalities. Status change contact information monitoring device 1
0 is the data conversion unit 20 monitored by CPolB and ■HF
16 of the satellite broadcasting device 108
The data converter 20 converts the status of each state change contact 16...
For example, it is converted into 16 types of audio signals, modulated by the VHF transmitter 22, and transmitted from the antenna 24 to the VHFii wave 2.
I believe in 6 and wave 6.

Note that the VHF transmitter 22 is connected to the state change contact information monitoring device 10.
sends an abnormality of contact 16..., and the main point 10
When there is an inquiry from Wave 6, VHFii wave 26 is sent to Wave 6.

Next, the relay monitoring device 28 provided at the commissioned monitoring station 104 in the service area 102 will be explained with reference to FIG.

30 is a VHF receiving section, which receives VHF radio waves 26 with an antenna 32 and demodulates them.

A first transmitter 34 modulates and outputs a signal indicating state change contact information demodulated by the VHF receiver 30 to be sent to a wired communication (telephone) line 36.

When the VHF receiving section 30 receives the state change contact information, the first transmitting section 34 transmits the information to the network control unit 38.
A signal indicating transmission is sent to the modem 42, disabling the connection of the subscriber telephone 40 and a second transmitting unit (to be described later) to the communication line 36, and transmitting status change contact information converted into a digital signal to the modem 42, via the communication line 36. Send to home 106.

A tuner 44 is a receiving means, and demodulates the television broadcast waves 12 received by the antenna 46 into analog video signals and audio signals.

A second transmitter 48 is a converting means and a transmitting means, and includes a still image (slow scan television) transmitter. The second transmitter 48 modulates and outputs the audio signal demodulated by the tuner 44 in real time in order to send it to the communication line 36 . On the other hand, the video signal demodulated by the tuner 44 is converted into a still image signal at a predetermined timing by the still image transmitter of the second transmitter 48. This conversion to a still image signal will be explained with reference to FIG. 4 (block diagram of a still image transmitter).

In FIG. 4, the video signal demodulated by the tuner 44 is sent to the RGB decoder 5o and decoded using the NTSC system. The parallel signal indicating the color decoded by the RGB decoder 50 is serialized by the RGB multiplexer 52 and digitally converted by the A/D converter 54.
The color data of 256 dots is stored in each color memory 5.
6.58.60. This control can be performed at a predetermined timing by the CPU 62 detecting the output of the timing generator 64.

In order to send the still image signal to the communication line 36, the CPU
62 reads each color memory 56, 58, 60 (7) data, serializes it, and sends it to the SCF using the FM generator 66.
The signal is subjected to M modulation and outputted, and sent to the communication line 36 via the network control unit 38 and modem 42.

Referring again to FIG. 2, 68 is a CPU, which controls the operations of the first transmitter 34 and the second transmitter 48.

The network control unit 38 controls the connection of the first transmitter 34, the subscriber telephone 40, or the second transmitter 48 to the communication line 36, and also identifies signals sent via the communication line 36. conduct.

Next, the central monitoring device 70 installed in the main location 106 will be explained with reference to FIG.

72 is a still image receiving unit, which receives the SCF sent from the relay monitoring device 28 via the communication line 36 and modem 74;
M still image signals are received and demodulated.

76 is an RGB monitor, which displays the still image demodulated by the still image receiving section 72. FIG. 5 shows a configuration for displaying still images.

The still image video signal subjected to SCFM modulation sent from the relay monitoring device 28 is detected into a digital signal by the detection section 78.
The CPU 80 writes color data of 256 dots per line to each color memory 82, 84, and 86. In order to display an image on the RGB monitor 76, the CPU 80 reads color data from the color memory 82, 84, 86 as data of 256 dots per line (240 lines in total) at a predetermined timing instructed by the timing generator 88, The still image is converted into analog by the A converter 90 and input to the color terminal of the RGB monitor 76 to be displayed.

Referring again to FIG. 3, reference numeral 91 denotes an audio monitor, which converts the audio signal sent in real time from the relay monitoring device 28 into an audio signal by the still image receiving unit 72 and outputs the converted audio signal.

An image printer 92 is provided to output a hard copy of the still image being output to the RGB monitor 76. The hard copy serves as reference data in case of failures such as beats, ghosts, etc.

93 is a CPU of a personal computer, which processes state change contact information sent from the relay monitoring device 28 via the communication line 36 and modem 74 and displays the satellite station name, date and time of state change occurrence, contents of the state change, etc. 9
4 or print out on the printer 95. Also,
If the operator at the main station 106 wants to monitor the status change contact information, video signal, or audio signal of the satellite station 100 at any time, he specifies the monitoring item from the keyboard 96, and the CPU 93 automatically specifies the communication line 36 at the satellite station 100. is connected to the relay monitoring device 28 of
, the RGB monitor 76, the image printer 92, or the audio monitor 91.

Note that 97 is a network control unit that identifies the signal and switches the connection of the communication line 36 between the subscriber telephone 98 and the still image receiving section 72.

Next, the operation of the monitoring system configured as described above will be explained.

When the operator at the home station 106 wants to monitor the status of the TV radio waves 12, etc. of the satellite station 100, the operator uses the keyboard 96 to identify the satellite station 100 to be monitored, and to monitor the image status and audio status (monitoring items). Enter.

Then, the CPU 93 connects the communication line 36 to the relay monitoring device 28 of the designated satellite station 100 via the modem 74. The network control unit 38 of the relay monitoring device 28 controls the second transmitter 4 according to the specified monitoring item.
8 to the communication line 36. A second transmitter 48 controlled by the CPU 6B converts the signal from the tuner 44 into a digital still image signal, and sends the audio signal to the central monitoring device 70 via the communication line 36 as a real-time digital signal.

When the network control unit 97 of the central monitoring device 70 determines that the still image signal and the audio signal have been sent, it connects the communication line 36 to the still image receiving section 72.
As mentioned above (output.

On the other hand, if the operator wants to obtain state change contact information of the satellite station 100, he inputs "state change contact information" as the monitoring item from the keyboard 96, and the network control unit 38 of the relay monitoring device 28 connects the first transmitter The state change contact information is sent to the central monitoring device 70 via the communication line 36, and the CPU 93 processes the information and outputs the state change contact information to the display 94 and/or printer 95. .

In the above embodiment, the image signal of the satellite station 100 received by the relay monitoring device 28 is converted into a still image signal using slow scan television technology, and output as a still image to the RGB monitor 76 of the central monitoring device 70 of the wood chips 106. This is because the cost required for the equipment can be kept considerably lower than when processing real-time image signals, and if there is no problem in terms of cost, the image signals can also be sent to the central monitoring device 70 in real time at the same time as the audio. You can also send it.

Further, transmission from the relay monitoring device 28 to the home 106 may be performed by wireless communication means other than the communication line 36, or by a relay monitoring device!
A relay station may be interposed between 2B and the home 106.

Furthermore, the satellite stations to be monitored are not limited to television broadcasting facilities, but can also be used to monitor broadcast signals other than video signals, such as radio and beacons.

Various preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-mentioned embodiments. Of course, many modifications can be made without departing from the spirit of the invention, such as a unidirectional communication method from the relay monitoring device to the central monitoring device instead of a two-way communication method with the central monitoring device. .

(Effects of the Invention) By using the broadcast radio wave relay monitoring device according to the present invention, it is possible to know the state of the broadcast radio waves directly from the wood chips.
Detailed monitoring data that would not be possible with outsourced monitoring can be collected, and experts can make accurate judgments. Particularly in the case of television radio waves, it is also possible to detect detailed data regarding image quality.

Furthermore, when monitoring image signals in television radio waves based on still image signals, there are significant effects such as the ability to configure equipment at a much lower cost than when monitoring real-time image signals. .

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an overview of the configuration of the satellite station, Fig. 2 is a block diagram of the relay monitoring device of the embodiment, Fig. 3 is a block diagram of the central monitoring device, and Fig. 4 is a block diagram of the relay monitoring device. FIG. 5 is a block diagram of the still image receiving section of the central monitoring device, and FIG. 6 is an explanatory diagram showing a conventional satellite station broadcast wave monitoring system. 12...TV radio waves, 28...Relay monitoring device,
36... Communication line, 44... Tuner, 48... Second transmitter, 1
00...Satellite station. Figure 1

Claims (1)

[Claims] 1. Receiving means for demodulating received broadcast radio waves, converting means for digitally converting the analog signal demodulated by the receiving means, and modulating the digital signal converted by the converting means, or transmitting means for transmitting to the outside by wireless method. 2. The broadcast wave relay monitoring device according to claim 1, wherein the broadcast wave is a television wave, and the conversion means digitally converts at least a video signal among the signals included in the television wave. 3. The broadcast wave relay monitoring device according to claim 2, wherein the transmitting means transmits the video signal converted into a digital signal by the converting means as a still image signal at a predetermined timing.