JP2001045598A - Inspection device for connection line for remote controller in broadcast unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inspect whether of not a defect such as a broken line is caused in connection lines interconnecting a remote controller and a broadcast unit body with respect to a broadcast unit provided with the remote controller. SOLUTION: When either of microphones 11, 21 is in use, a relay switch is open. In this case, a monitor speaker 26 at a side of the remote controller 2 can confirm contents of a broadcast program received by a speaker line. When no microphones 11, 21 are in use, the relay switch 7 is closed. Thus, an inspection signal outputted from an oscillation circuit 4 is given to a monitor line 33 via an adder circuit 5 and given to a detection circuit 6 via the relay switch 7 and a microphone line 31. Thus, whether of not the microphone line 31 and the monitor line 33 are normal can be inspected depending on whether or not the detection circuit 6 detects the inspection signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcasting device used for, for example, in-plant broadcasting of a station or a building, which is provided with a remote controller for remotely controlling the broadcasting device. The present invention relates to an inspection device for inspecting whether or not an abnormality such as a disconnection has occurred in a connection line connecting a remote controller and a remote controller.

[0002]

2. Description of the Related Art As a broadcasting apparatus provided with a remote controller as described above, for example, a broadcasting apparatus as shown in FIG. 6 is conventionally known. As shown in FIG. 1, the broadcasting device includes a device main body 1, a remote controller 2, and a connection line 3 for connecting the two.

[0003] The apparatus main body 1 includes a microphone 11 with a talk switch. When the talk switch is turned on (pressed), an audio signal input from the microphone 11 into the apparatus main body 1 via the microphone input terminal 1a is amplified by the output amplifier 12 and output from the output terminal 1b. . A plurality of speaker lines including a plurality of speakers (not shown) are connected to the output terminal 1b, and each of the speaker lines is appropriately wired toward each broadcast target area.

The apparatus main body 1 has a CPU (central processing unit) 13 therein. The CPU 13 is connected to an operation unit 14 having, for example, a plurality of push button keys, operation knobs, and the like.
, Ie, changing the amplification factor, that is, the volume, or switching between valid / invalid of each speaker line. The CPU 13 includes a display unit 15 having, for example, a light emitting diode (LED) or liquid crystal (LCD) panel configuration.
Is also connected. Then, the CPU 13 determines, for example, whether each of the speaker lines is in the valid or invalid state, according to the various control contents, and the microphone 1.
The display unit 15 displays the operation status of the broadcast device itself under the above various controls, such as whether or not the broadcast is being performed by 1. The series of operations of the CPU 13 is performed by, for example, a ROM or R
Control is performed according to a program stored in the storage unit 16 having a semiconductor memory configuration such as AM.

On the other hand, the remote controller 2 has substantially the same functionality and operability as the above-mentioned broadcasting device main body 1, and in order to realize this, the same microphone 21, CPU 22, An operation unit 23, a display unit 24, and a storage unit 25 are provided. The connection line 3 is connected to a microphone line 31 for transmitting an audio signal output from the microphone 21 of the remote controller 2 to the apparatus main body 1.
And the CPU 22 of the remote controller 2 and the CP of the apparatus body 1
And a control line 32 that enables mutual data communication with U13.

That is, when the talk switch (not shown) of the microphone 21 is turned on on the remote controller 2 side, a signal indicating that the microphone 21 is in use is transmitted from the CPU 22 to the CPU 13 of the apparatus body 1. . Thereby, the CPU 13 recognizes that the microphone 21 of the remote controller 2 has been used. In this state, when a voice is input from the microphone 21, the voice signal is input into the remote controller 2 via the microphone input terminal 2a and output from the voice output terminal 2b. Then, this audio signal is transmitted to the apparatus main body 1 side through the microphone line 31, input into the apparatus main body 1 via the audio input terminal 1 c, and finally amplified by the output amplifier 12, and then output to the output terminal 1 b Is input to each speaker line. When both the talk switches of the microphone 11 of the apparatus main body 1 and the microphone 21 of the remote controller 2 are ON, which audio signal is given priority is determined by, for example, a program of the CPU 13 of the apparatus main body 1. Can be set arbitrarily. At this time, it is also possible to simultaneously broadcast the sounds of both microphones 11 and 21 in a superimposed manner.

When the operation unit 23 of the remote controller 2 is operated, the CPU 22 generates control data to remotely control the CPU 13 of the apparatus main body 1 in response to the operation.
This control data is transmitted to the control line 32 via the control terminal 2c.
And transmitted to the apparatus main body 1 via the control line 32. Then, through the control terminal 1d, the device body 1
Is input to the CPU 13 in the
Executes the various controls described above. At the same time, CPU1
Reference numeral 3 indicates that the display data is remotely controlled via the control line 32 so that the operation status of the broadcasting device itself is also displayed on the display unit 24 of the remote controller 2, similarly to the display unit 15 of the device main body 1. Is transmitted to the CPU 22 of the device 2. In response, C
The PU 22 reproduces the display mode of the display unit 24 of the remote controller 2 on the display unit 24.

Further, the remote controller 2 also has a monitor speaker 26 for monitoring the sound actually broadcast. The connection line 3 is connected to a monitor line 33 for transmitting the same audio signal (output signal of the output amplifier 12) to the remote controller 2 as is actually input to each of the speaker lines on the apparatus main body 1 side. have. That is, when a broadcast is actually being performed, the output signal of the output amplifier 12 is output from the audio output terminal 1e of the apparatus main body 1 and is monitored via the monitor line 33 and the audio input terminal 22d of the remote controller 2. Input to the speaker 26. Thus, the audio currently being broadcast is output from the monitor speaker 26.

By the way, in the broadcasting apparatus configured as described above, if the connection line 3, especially the microphone 31 and the monitor line 33 are disconnected, for example, the remote controller 2
Accordingly, problems such as the inability to broadcast and the inability to confirm the broadcast content on the remote controller 2 occur. In order to avoid such a problem in advance, conventionally, for example, on the remote controller 2 side, a sound is actually output using the microphone 21, and this is confirmed by the monitor speaker 26. Also, it was inspected whether or not any of the monitor lines 33 were disconnected.

[0010]

However, the manual inspection as described above has a problem that the work is troublesome and troublesome. In particular, since such an inspection needs to be performed periodically, this problem becomes more prominent. Further, in order to prevent the sound emitted for inspection from actually being broadcast, for example, all the speaker lines must be invalidated (that is, their outputs are turned off), or the volume control by the output amplifier 12 must be minimized. Must.

Accordingly, an object of the present invention is to provide an inspection apparatus capable of automatically inspecting the connection line 3 including the microphone line 31 and the monitor line 33.
It is also an object of the present invention to be able to solve the above-mentioned conventional problems only by performing relatively simple and inexpensive remodeling work on existing broadcasting apparatuses.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a broadcast apparatus main body, a remote controller having a microphone and a monitor speaker, and a broadcast apparatus main body and a remote controller. And a first line for transmitting the output signal of the microphone from the remote controller side to the broadcasting device body side, the broadcasting device body and the remote controller being connected to each other, A predetermined signal, for example, the same signal as the signal to be actually broadcasted by the broadcasting device body (in other words, the signal to be input to the speaker line) is transmitted from the side to the remote controller side and input to the speaker. Test signal generating means provided on the broadcast apparatus main body side for generating a test signal and inputting the signal to one of the first and second lines; and the remote controller Switching means for electrically connecting or disconnecting the respective lines to each other according to a switching control signal on the remote controller side, and connecting the respective lines to each other during non-broadcasting, and connecting the respective lines during broadcasting. A switching control unit for generating the switching control signal and supplying the switching control signal to the switching unit in a disconnected state; And a test signal detecting means for detecting through a line.

The above-mentioned switching means can be constituted by, for example, a relay circuit or an analog switch circuit. The non-broadcasting time refers to a time when no microphone including the microphone on the remote controller side is used, for example, and further, a broadcasting device is generally known as an audio file device or a cassette / tape recorder. In the case where such a musical instrument is provided, when these musical instruments and the microphones are not used at all, this is called non-broadcasting time. The time of broadcasting refers to when any microphone including the microphone on the remote controller side is used, and further, when the broadcasting device includes the above-described performance device, the microphone is used. If any of the performance devices are used even if they are not playing, this is called broadcast time. When each microphone has, for example, the above-described talk switch, it can be determined from the ON / OFF state of the talk switch whether each microphone is used.

For example, it is assumed that the talk switch of the microphone on the remote controller side is turned on. Then, the switching control means controls the switching means so as to disconnect the first and second lines (specifically, generates a switching control signal for realizing this control and supplies it to the switching means). In this state, when sound is input from the microphone, the output signal of the microphone is transmitted to the broadcast device main body via the first line. Then, after being subjected to, for example, an amplification process in the broadcasting apparatus main body, the signal is input to each speaker line via, for example, an output terminal. At the same time, the same signal input to the speaker line is transmitted to the remote controller via the second line and input to the speaker. As a result, the sound that is actually being broadcast (the sound input to the microphone) is output from the speaker. The same applies to the case where a microphone with a talk switch is also provided on the broadcast apparatus main body side and the talk switch of this microphone is turned on.

On the other hand, it is assumed that the talk switches of all the microphones including the microphone on the remote controller side are all turned off. In this case, the switching control means
The switching means is controlled so as to electrically connect the first and second lines to each other. Here, it is assumed that none of the first and second lines is disconnected, that is, normal. Then, the test signal input to one of the first and second lines by the test signal generating means is transmitted to the remote controller through the one line, and is switched through the switching means in the remote controller. To the other line, and sent back to the broadcasting apparatus main body side via the other line. Then, the inspection signal sent back to the broadcasting apparatus main body via the other line is detected by the inspection signal detecting means. Conversely, it is assumed that at least one of the first and second lines is disconnected. In this case, the test signal detecting means cannot detect the test signal. Therefore, whether or not the first and second lines are both normal can be determined based on whether or not the test signal can be detected by the test signal detecting means.

The detection signal may be either a DC signal or an AC signal, but preferably an AC signal in a frequency band other than the audible frequency band.

Conversely, the test signal generating means and the test signal detecting means may be provided on the remote controller side. In this case, the switching means and the switching control means are unnecessary.

That is, when each of the first and second lines is normal and the time of non-broadcasting is reached, the test signal input to one of the lines by the test signal generating means on the remote controller side is the same as that of the other. The data is transmitted to the broadcasting device via the line. On the broadcast apparatus main body side, a conducting means for conducting the test signal to the other line directly or via an output amplifier or the like is provided, and the test signal conducted to the other line by the conducting means is transmitted to the other line. And sent back to the remote controller side, and detected by the inspection signal detecting means on the remote controller side. Conversely, if at least one of the lines is broken, the inspection signal detection means cannot detect the inspection signal as described above.

According to the present invention, the information output means for outputting information indicating whether or not the test signal is normally detected by the test signal detecting means during non-broadcasting is provided in the broadcast apparatus main body and the remote controller. It may be provided on one or both.

If the information output means is provided in this manner, it is determined from the output information whether the test signal is normally detected by the test signal detecting means, that is, both the first and second lines are normal. Whether or not there is can be easily recognized. The information output means can be constituted by means for outputting the information in a visual form, such as a light emitting diode or a liquid crystal panel. Further, the information output means can also be constituted by a means such as a speaker or a buzzer which outputs the information in an auditory form such as a sound or a warning.

The test signal generating means may be configured to input the test signal to the one line only during non-broadcasting. In this way, it is possible to prevent the inspection signal from being actually broadcast or affecting other circuits during broadcasting. In particular, when an AC signal in an audible frequency band is used as the inspection signal, it is very effective. In non-broadcasting, that is, when the first
And when the inspection for the second line is performed,
Since only the test signal is transmitted through the second line and the second line, the detection operation of the test signal by the test signal detecting means becomes very easy.

Further, the broadcasting device is provided with a third line for connecting the broadcasting device body and the remote controller to each other separately from the first and second lines. Means and the inspection signal detecting means, the switching control means is provided on the broadcasting device main body side, and the switching control means on the broadcasting device main body side is sent to the remote control device side via the third line. The switching control signal may be supplied to a certain switching means.

This makes it possible to determine whether the third line is normal or not. That is, for example,
Now, assume that the third line is normal. In this case, the switching control means on the broadcasting device main body normally supplies a switching control signal to the switching means on the remote controller side, so that the normal broadcasting operation and the first and second switching operations are performed. The inspection operation of each line can be performed normally. On the other hand, it is assumed that the third line is disconnected, for example. In this case, since the switching control signal is not supplied from the switching control unit to the switching unit, the switching unit does not switch normally, so that at least a normal broadcasting operation or an inspection operation of each line cannot be performed. Therefore, whether or not the third line is normal can be recognized based on whether or not the switching means switches normally.

When the test signal generation means and the test signal detection means are provided on the remote controller side, the detection control means for controlling the detection signal detection operation by the test signal detection means is provided by broadcasting. Provided on the main unit side. That is, the detection control means generates a detection control signal for controlling the test signal detection means so as to execute the detection signal detection operation during non-broadcasting. Then, the detection control signal is supplied to the inspection signal detection means via the third line. Therefore,
The inspection signal detection means, when the third line is normal,
When the detection operation of the inspection signal is performed and the third line is disconnected or the like, the detection operation of the inspection signal cannot be performed.

Then, the broadcasting device provided with the inspection device of the present invention originally has the same configuration as that of the above-described speaker line and the like, which is also applied to a fourth line different from the first to third lines. When a means for generating an inspection signal for inspection is provided on the broadcast apparatus main body side, this means may be used as the inspection signal generation means. With this configuration, it is not necessary to provide a dedicated test signal generation unit in order to realize the present invention.

As described above, when the broadcast apparatus main body originally has the test signal generation means, the broadcast apparatus main body is usually connected to a fifth line different from the first to fourth lines. ,
In many cases, a means for detecting the inspection signal input to the fourth line is also provided in the broadcast apparatus main body. Therefore, even in such a case, if the means for detecting the test signal is used as the test signal detecting means, it is not necessary to provide a dedicated test signal detecting means.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described.
This will be described with reference to FIGS.

FIG. 1 shows a schematic configuration of the present embodiment.
As shown in the figure, the present embodiment includes an apparatus main body 1, a remote controller 2, and a connection line 3 for connecting these to each other, as in the conventional technique shown in FIG. 6 described above. I have. 6, an oscillation circuit 4, an addition circuit 5, and a detection circuit 6 are provided on the device main body 1 side, and a relay switch circuit 7 is provided on one remote controller 2 side. Since the other hardware configuration is the same as that of FIG. 6, the same reference numerals are given to the same parts, and the detailed description is omitted. The software configuration of the present embodiment, that is, the operation of each of the CPUs 13 and 22 will be described later in detail.

The oscillation circuit 4 generates an AC signal of, for example, about 15 kHz to 20 kHz, and converts the AC signal into
Under the control of the CPU 13, the signal is input to or not input to the monitor line 33 via the addition circuit 5 (in other words, the AC signal is superimposed or non-superimposed on the audio signal input to the monitor line 33). On the other hand, the relay switch circuit 7
Is provided in the remote controller 2 so as to mutually connect or disconnect between the audio output terminal 2b and the audio input terminal 2d, that is, between the microphone line 31 and the monitor line 33, and to turn on / off thereof. The operation is controlled by the CPU 22. When the relay switch circuit 6 is turned on and the microphone line 31 and the monitor line 33 are connected to each other, the detection circuit 6 inputs the signal from the oscillation circuit 4 to the monitor line 33 via the adder 5. An AC signal is detected through the monitor line 33, the relay switch circuit 6, and the microphone line 31,
The detection result is input to the CPU 13. The CPU 13
ON / OFF of each talk switch of each microphone 11, 21
The following operation is performed according to the OFF operation.

For example, it is assumed that a talk switch of each of the microphones 11 and 21 is turned on. Then, the CPU 13 controls the oscillation circuit 4 so that the AC signal generated by the oscillation circuit 4 is not input to the monitor line 33.
Is turned off. At the same time, the CPU 13 turns off the relay switch circuit 7 on the remote controller 2 side.
An inspection end command is generated and transmitted to the CPU 22 of the remote controller 1 via the control line 32. The CPU 22 turns off the relay switch circuit 7 by receiving the inspection end command, whereby the microphone line 31 and the monitor line 33 are separated from each other.

In this state, when sound is input to one of the microphones 11 and 21 whose talk switch is turned on, the sound signal is amplified by the output amplifier 12 in the apparatus body 1 and is output via the output terminal 1b. And supplied to each speaker line. At the same time, the same signal (the output signal of the output amplifier 12) supplied to each speaker line is input to the monitor speaker 26 and the like of the remote controller 2 via the monitor line 33. As described above, when the talk switch of any one of the microphones 11 and 21 is turned on, normal broadcasting is performed by the microphones 11 and 21 whose talk switches are turned on.

On the other hand, it is assumed that each of the talk switches of each of the microphones 11 and 21 is turned off. Then
The CPU 13 outputs the output of the oscillation circuit 4 to an O so that the AC signal generated by the oscillation circuit 4 is input to the monitor line 33.
N. At the same time, the CPU 13 generates an inspection start command to turn on the relay switch circuit 7 of the remote controller 2, and outputs the CP of the remote controller 1 via the control line 32.
Send to U22. The CPU 22 turns on the relay switch circuit 7 by receiving the inspection start command.
Thus, the microphone line 31 and the monitor line 33 are connected to each other.

Here, it is assumed that neither the microphone line 31 nor the monitor line is disconnected, that is, normal. In this case, the oscillation circuit 4 sends the monitor line 33
Are input to the detection circuit 6 via the monitor line 33 → the relay switch circuit 7 → the microphone line 31. Conversely, when at least one of the microphone line 31 and the monitor line 33 is disconnected, the detection circuit 6 cannot detect the AC signal. The detection result by the detection circuit 6 is C
It is supplied to PU13.

[0034] The CPU 13 determines
It is determined whether the microphone line 31 and the monitor line 33 are normal. That is, when the detection circuit 6 can detect the AC signal, it is determined that both the lines 31 and 33 are normal. On the other hand, the detection circuit 6
If the AC signal cannot be detected, it is determined that an abnormality such as disconnection has occurred in at least one of the lines 31 and 33. Then, the CPU 13 displays on the display unit 15 the result of the determination, that is, whether or not each of the lines 31 and 33 is normal. At the same time, in order to realize the same display on the display unit 24 of the remote controller 2, the display data is transmitted to the control unit 32 via the control line 32.
Transmit to U22. The CPU 22 controls display contents of the display unit 24 based on the received display data.

As described above, any of the microphones 11,
When the talk switch 21 is also in the OFF state, that is, at the time of non-broadcasting, the microphone line 31 and the monitor line 33 are checked whether or not each is normal.

A series of operations of the CPU 13 are controlled according to a program stored in the storage unit 16. FIG. 2 shows the operation of the CPU 13 based on this program.

As shown in the figure, the CPU 13 checks whether any one of the microphones 11 and 21 is in use from the ON / OFF state of each talk switch (steps S2 and S4). If any one of the microphones 11 and 21 is in use (YES in each of steps S2 and S4), the CP
U13 confirms whether or not the inspection flag F is lowered, that is, whether or not the inspection for each of the lines 31 and 33 is being performed (whether or not F = 0) (step S).
6). If the flag F is set (if F = 1), that is, if the inspection of each of the lines 31 and 33 has been performed immediately before entering step S6 (if NO in step S6) Oscillating circuit 4
Is turned off (step S8). Then, the above-described inspection end command is transmitted to the CPU 22 of the remote controller 2 (step S10), the flag F is lowered (step S12), and the process exits the flow. On the other hand, in step S6, when the flag F has already been lowered (F
= 0), that is, if the normal broadcast state has been continued before entering step S6 (if YES),
Exit this flow as it is.

In steps S2 and S4,
When it is confirmed that none of the microphones 11 and 21 are used (NO in each of the steps S2 and S4), the CPU 13 determines whether or not the inspection flag F is set (F = 1). Is checked (step S14). Here, when the flag F is down (when F = 0), that is, when the normal broadcast is being executed until immediately before entering step S14 (step S1)
4 (NO), the output of the oscillation circuit 4 is turned on (step S16). Then, the above-described inspection start command is transmitted to the CPU 22 of the remote controller 2 (step S18), and the flag F is set (step S2).
0). Then, in this state, it is confirmed whether or not an AC signal, that is, a so-called inspection signal, input to the monitor line 33 from the oscillation circuit 4 is detected by the detection circuit 6 (step S22). On the other hand, in step S14, when the flag F has already been set (if F = 1), that is, when the inspection for each of the lines 31 and 33 has been performed before entering step S14 (in the case of YES). Proceeds directly to step S22.

In step S22, the detection circuit 6
When the CPU 13 confirms that the inspection signal is normally detected (YES), the CPU 13 determines that each of the lines 31 and 33 is normal and exits this flow. On the other hand, if it is confirmed in step S22 that the detection signal is not detected by the detection circuit 6 (in the case of NO), the CPU 13 determines that at least the microphone line 31 or the monitor line 33 has an abnormality such as disconnection. . Then, the display unit 15
It is confirmed whether or not a warning has been displayed (step S24).
If a warning has not yet been displayed on the display unit 15 (in the case of NO), a warning indicating the abnormality is displayed on the display unit 15 (step S26), and the flow exits. If a warning has already been displayed on the display unit 15 (NO in step S24), the CPU 13 exits this flow as it is.

On the other hand, the CPU 22 of the remote controller 2 operates as shown in FIG. 3 according to a program stored in the storage unit 25.

That is, the CPU 22 controls the CP of the apparatus main body 1 side.
It is in a state of waiting for transmission of either the inspection start instruction or the inspection end instruction from U13 (steps S102 and S104). Here, when the inspection start command is received (YES in step S102),
The CPU 22 turns on the relay switch circuit 7, connects the microphone line 31 and the monitor line 33 to each other (step S106), and exits this flow. On the other hand, when the inspection end command is received (YES in step S104), the relay switch circuit 7 is turned off.
F, the microphone line 31 is disconnected from the monitor line 33 (step S108), and the flow exits. When neither command is received (step S10
2. If both are NO in S104), the CP
U22 exits this flow as it is.

As described above, according to the present embodiment, when each of the microphones 11 and 21 is not used, that is, at the time of non-broadcasting, whether or not each of the lines 31 and 33 is disconnected is automatically checked. I do. Therefore, unlike the conventional technique shown in FIG. 6 in which the inspection of each of the lines 31 and 33 has to rely on a manual inspection, the inspection of each of the lines 31 and 33 can be performed frequently without any trouble.

When the control line 32 is disconnected, for example, the inspection start command and the inspection end command are not transmitted from the CPU 13 of the apparatus main body 1 to the CPU 22 of the remote controller 2, so that the relay switch circuit 7 Normal ON
No / OFF operation. Therefore, the CPU 13 normally turns ON / OFF the relay switch circuit 7 in accordance with the above commands.
Whether or not the control line 32 is normal can be determined based on whether or not the operation is performed.

Further, in the present embodiment, an oscillation circuit 4, an addition circuit 5, a detection circuit 6 and a relay switch circuit 7 are provided for the conventional broadcasting device shown in FIG.
It can be realized only by relatively simple and inexpensive remodeling work, in which a slight change is made to the program for controlling 13 and 22. In particular, as shown in FIG. 4, for example, the apparatus main body 1 originally includes an oscillation circuit 4, an addition circuit 5, and a detection circuit 6.
In this case, the present embodiment can be realized more simply and at lower cost.

That is, the oscillation circuit 4 for inputting the inspection signal to each speaker line is intended for the purpose of the main body 1 of the apparatus to check whether or not each speaker line has an abnormality such as disconnection. It is assumed that the addition circuit 5 is originally provided. In order to detect the inspection signal input to the speaker line via another inspection line (eg, a line generally called a return line) connected to the speaker line, the inspection signal is originally used. ,
It is assumed that a detection circuit 6 is provided. In such a case, if these circuits 4, 5, and 6 are used for the inspection of the lines 31, 33 in the present embodiment, there is no need to provide them in particular.

The microphone line 31, the monitor line 33, and the control line 32 in the present embodiment
The first, second and third claims respectively described in the claims.
Corresponding to the line. Further, the speaker line and the inspection line (not shown) in the configuration of FIG. 4 correspond to the fourth and fifth lines described in the claims, respectively.

The oscillating circuit 4 and the adding circuit 5 correspond to the test signal generating means described in the claims, and the detecting circuit 6 corresponds to the test signal detecting means described in the claims. In the present embodiment, the inspection signal generated by the oscillation circuit 4 is supplied to the monitor line 33 via the addition circuit 5.
, And this is detected by the detection circuit 4 via the microphone line 31, but is not limited to this. For example, the inspection signal generated by the oscillation circuit 4 may be input to the microphone line 31 via the addition circuit 5 and detected by the detection circuit 4 via the monitor line 33. In addition, the oscillation circuit 4 is configured to turn on its output only during non-broadcasting, but is not limited to this. For example,
If the test signal output from the oscillation circuit 4 is a signal in a frequency band other than the audible frequency band, the test signal may be output at all times.

Each of the CPUs 1 according to the present embodiment
3, 22 and especially the CPU 13 of the apparatus main body 1 correspond to the switching control means described in the claims. Each of these CPs
The operations of U13 and U22 are not limited to the flowcharts of FIGS. 2 and 3 described above. If the same operations and effects as those of the present embodiment can be obtained, the operations other than those of FIGS. Each of the CPUs 13 and 22 may be controlled.

The relay switch circuit 7 corresponds to the switching means described in the claims. Not limited to this,
For example, the switching means may be realized by an analog switch circuit or the like.

Each of the display sections 15 and 24 corresponds to the information output means described in the claims. The information output means is not limited to the display units 15 and 24, and the information to be output may be output in an auditory manner by using, for example, a speaker or a buzzer.

Further, as shown in FIG. 5, for example, the oscillating circuit 4, the adding circuit 5, and the detecting circuit 6 may be provided on the remote controller 2 side instead of the apparatus main body 1 side. In this case, the relay switch circuit 7 becomes unnecessary.

That is, when it is a non-broadcasting time, an inspection signal is input from the oscillation circuit 4 to the microphone line 31 via the addition circuit 5. Here, assuming that both the microphone line 31 and the monitor line 33 are normal, the inspection signal is transmitted via the microphone line 31 to the apparatus main body 1.
Transmitted to the side. Then, on the device main body 1 side, the inspection signal is sent to the monitor line 33 via the output amplifier 12.
And sent back to the remote controller 2 via the monitor line 33. Then, in the remote controller 2, the inspection signal is input to the monitor speaker 26 and detected by the detection circuit 6. On the other hand, if any one of the microphone line 31 and the monitor line 33 is disconnected, the detection circuit 6 cannot detect the inspection signal.

At the time of broadcasting, the detection operation of the inspection signal by the detection circuit 6 is stopped (in other words, the CPU 22 of the remote controller 2 is controlled so as to ignore the detection result by the detection circuit 6). At the same time, the oscillation circuit 4
Is also turned off. These controls are realized based on the inspection start instruction and the inspection end instruction given from the CPU 13 of the apparatus main body 1 via the control line 32.
Therefore, when the control line 32 is disconnected, the inspection signal is not output from the oscillation circuit 4, so that the disconnection of the control line 32 can be recognized.

The CPU 13 in the configuration of FIG. 5 corresponds to the detection control means described in the claims, and the inspection start command and the inspection end command correspond to the selection control signal described in the claims. Means for conducting a test signal input into the apparatus main body 1 through the microphone line 31 at least during non-broadcasting to the monitor line 33 through the output amplifier 12, for example, the CPU 13 and the CPU
Means (not shown) for controlling a signal input to the output amplifier 12 by 13 corresponds to the conducting means described in the claims.

[0055]

As described above, according to the present invention, whether or not each of the first and second lines is disconnected is automatically checked during non-broadcasting. Therefore, unlike the above-described prior art in which the inspection must be performed manually, there is an effect that the inspection of each line can be executed frequently without any trouble.

In addition, the test signal generating means, the test signal detecting means, and the switching control means are provided on the broadcasting device main body side of the conventional broadcasting device, and the switching means is provided only on the remote control device side, or on the remote control device side. The present invention can be realized only by providing the test signal generating means and the test signal detecting means and providing the conducting means on the broadcast apparatus main body side. Therefore, it is effective that the present invention can be realized only by performing relatively simple and inexpensive remodeling work on a conventional broadcasting device. In particular,
If the broadcasting apparatus body originally has the same means as the above-described test signal generation means and test signal detection means, for example, for testing the above-described speaker line or the like, the remodeling is performed by diverting these. Construction can be simplified and cost reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of a CPU of the apparatus main body according to the embodiment.

FIG. 3 is a flowchart showing an operation of a CPU of the remote controller according to the embodiment.

FIG. 4 is a block diagram showing another configuration example different from FIG.

FIG. 5 is a block diagram showing another configuration example different from FIGS. 1 and 4;

FIG. 6 is a schematic configuration diagram showing an example of a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 2 Remote controller 3 Connection line 4 Oscillation circuit 5 Addition circuit 6 Detection circuit 7 Relay switch circuit 13, 22 CPU (Central processing unit) 21 Microphone 26 Monitor speaker 31 Microphone line 32 Monitor line 33 Control line

Claims (8)

[Claims] A remote control device including a broadcasting device main body, a microphone and a speaker; connecting the broadcasting device main body and the remote control device to each other; and connecting the microphone to the broadcasting device main body from the remote control device side. A first line for transmitting an output signal, the broadcasting device main body and the remote controller connected to each other,
A second line for transmitting a predetermined signal from the broadcasting device main body to the remote controller and inputting the signal to the speaker; and a second line provided on the broadcasting device main body for generating a signal for inspection and receiving the first signal. Inspection signal generation means for inputting to either one of the second and second lines; switching means provided on the remote controller side for connecting or disconnecting the respective lines with each other according to a switching control signal; A switching control means for generating the switching control signal and supplying the switching control signal to the switching means in a state in which the lines are connected to each other and disconnecting the lines at the time of broadcasting; A test signal detecting means for detecting the test signal input to the one line via the other line, and a test line detecting device for a remote controller in a broadcasting device. 2. A broadcasting device main body, a remote controller having a microphone and a speaker, connecting the broadcasting device main body and the remote controller to each other, and connecting the microphone to the broadcasting device main body from the remote control device side. A first line for transmitting an output signal, the broadcasting device main body and the remote controller connected to each other,
A second line for transmitting a predetermined signal from the broadcast device main body to the remote controller and inputting the signal to the speaker; and a second line provided on the remote controller for generating a signal for inspection and the first line. And a test signal generating means for inputting to one of the second lines, and at least at the time of non-broadcast,
Conducting means for directly or processing the signal input from the one line and conducting to the other line, provided on the remote controller side, and for non-broadcasting, for the inspection inputted to the one line A test signal detecting means for detecting a signal via the other line; 3. The remote device according to claim 1, further comprising information output means for outputting information indicating whether or not the test signal is detected by the test signal detection means during non-broadcasting. Inspection device for connection line for actuator. 4. A connection line for a remote controller in a broadcasting device according to claim 1, wherein said inspection signal generation means is configured to input said inspection signal to said one line only during non-broadcasting. Inspection equipment. 5. A third line for connecting the broadcasting device body and the remote controller to each other separately from each of the lines, wherein the switching control means is provided on the broadcasting device body side,
2. The inspection apparatus for a connection line for a remote control device in a broadcasting device according to claim 1, wherein said switching control signal is supplied to said switching means via said third line. 6. A third line connecting the broadcasting device main body and the remote controller to each other separately from the lines, wherein the inspection signal detecting means detects the signal for inspection based on a detection control signal. The detection control signal is generated in a state in which the detection signal detection operation is performed by the inspection signal detection means during non-broadcasting, and the inspection signal detection means is generated via the third line. The inspection device for a connection line for a remote control device in a broadcasting device according to claim 2, wherein a detection control means for supplying to the broadcasting device is provided on the main body side of the broadcasting device. 7. The remote control device according to claim 1, wherein the test signal generation means inputs the test signal to a fourth line provided separately from the lines. Inspection equipment for connection lines. 8. The broadcast apparatus according to claim 7, wherein the inspection signal detection means detects a signal input to the fourth line via a fifth line different from each of the lines. Inspection equipment for connection lines for remote controllers in Japan.