JPH0832859A - Signal communication system - Google Patents

Abstract

PURPOSE:To record a narration voice signal and a voice signal desired to be recorded by a VTR main body in an excellent state through remote control by allowing a signal recording and reproducing means to return a reply signal corresponding to a signal and a specific discrimination signal supplied from a remote control means to the remote control means. CONSTITUTION:A video signal and an audio signal obtained by a narration microphone 3 and a CCD image pickup element 3 provided to a remote controller 2 are sent to a video camera 1. Then a discrimination signal representing whether or not the video signal and the audio signal are correctly sent is sent from the remote controller 2 to the video camera 1. Upon the detection of the discrimination signal, the video signal and the audio signal supplied from the remote controller 2 are mixed with the video signal and the audio signal obtained by the video camera 1. Furthermore, a reply signal corresponding to the mixed signal and the discrimination signal is sent back from the video camera 1 to the remote controller 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal communication system for recording / reproducing video signals and audio signals by a camera-integrated VTR equipped with a remote controller.

[0002]

2. Description of the Related Art Consumer camera integrated VTRs have become smaller and lighter and have become widespread as technology advances. Along with this, the enjoyment of taking pictures and the enjoyment of seeing have become widespread, and the usage of camera-integrated VTRs has become diverse.

One of them is a remote controller (hereinafter,
There is a method of controlling the camera-integrated VTR by remote control using a remote controller) and recording the shooting situation by a narration with a microphone connected to the remote controller. When voice recording is performed on the camera-integrated VTR using the narration microphone provided in the remote controller, for example, if there is an obstacle between the remote controller and the camera-integrated VTR, the voice signal is properly recorded in the camera-integrated type. Not transmitted to VTR.
Moreover, it cannot be confirmed. Therefore, if the narration sound is not correctly transmitted to the camera-integrated VTR main body, the narrator may continue to perform useless narration. In this case, only the audio signal is transmitted, and the video signal related to this audio signal cannot be transmitted.

Further, when the input audio signal level from the camera-integrated VTR itself becomes small, only the narration audio becomes large, and there is a problem that the audio signal to be originally recorded is masked.

[0005]

From the above viewpoints, the present invention enables transmission of a video signal in addition to the narration microphone function by the remote controller, and the audio signal and the video signal from the narrator by the remote controller are transmitted. It is an object of the present invention to provide a signal communication system capable of recording a narration voice and a voice signal desired to be recorded on the VTR body side in a good condition even when the voice transmission is not normally performed.

[0006]

The present invention comprises a video camera 1 for recording and reproducing a video signal and an audio signal, and a remote controller 2 for remotely controlling the video camera 1. ,
When the video signal, the audio signal and the discrimination signal are sent and the discrimination signal is detected by the video camera 1, the response signal corresponding to the video signal, the audio signal and the discrimination signal output from the remote controller 2 is remote from the video camera 1. The signal communication system is sent back to the controller 2.

[0007]

The video camera 1 records video signals and audio signals. The remote controller 2 is provided with a narration microphone 3 and a CCD image pickup device 4. Video signals and audio signals obtained by the narration microphone 3 and the CCD image pickup device 4 are transmitted to the video camera 1. At the same time, the remote controller 2 transmits to the video camera 1 a determination signal indicating whether or not the video signal and the audio signal are correctly transmitted. The video camera 1 detects the discrimination signal, and when the discrimination signal is detected, the video signal and the audio signal obtained from the video camera 1 are mixed with the video signal and the audio signal supplied from the remote controller 2. To be done. Further, a response signal corresponding to the mixed signal and the discrimination signal is sent back from the video camera 1 to the remote controller 2.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. The description will be given in the following order. (A) One remote controller-1 VTR (B) Block configuration (C) Operation flowchart (D) Two remote controller-1 VTR (E) Two remote controller-2 VTR (F) One remote controller-2 VTR For simplicity, in the following description, a camera-integrated VTR is used as an information signal recording / reproducing communication device.

(A) In the case of one remote controller-1 VTR FIG. 1 is a diagram showing a first embodiment of the present invention, in which one camera-integrated VTR and a voice signal and a video signal can be bidirectionally communicated. It is a signal communication system consisting of one remote controller. If a remote controller that can communicate only in one direction is installed, in the following description, even if a signal is transmitted from the camera-integrated VTR main body to the remote controller, it is not received and the function corresponding to the description does not operate. I shall.

Reference numeral 1 denotes a camera-integrated VTR. It goes without saying that the camera-integrated VTR 1 can be controlled by the main body side, and the attached remote controller 2 can also be used.
The remote controller 2 is equipped with a narration microphone 3, a voice monitor, a CCD camera 4, and a video monitor LCD.

The audio signal and the video signal transmitted from the remote controller 2 are arbitrarily mixed with the video signal and the audio signal photographed by the camera-integrated VTR 1 to obtain the camera-integrated VTR 1.
It is recorded on the magnetic tape provided in TR1. At the same time, the signal recorded on the magnetic tape is V
It is transmitted from TR1 to the remote controller 2 and can be monitored on the remote controller side.

Here, for example, when there is an obstacle between the VTR main body and the remote controller and the voice signal of the narration cannot be transmitted in a good state, the transmission signal is a noisy signal due to the deterioration of the S / N ratio. Become. Then, the signal recorded on the magnetic tape becomes very annoying.

Such a state can be prevented by recording while confirming with an audio monitor. However, it is possible to forget to check the monitor and continue to record narration in a bad recording state. In order to deal with such a case, in the system of the present invention, the camera-integrated VTR side detects the transmission state by detecting the transmission signal level, and does not automatically record a noise signal having a poor S / N ratio. I am trying. For example, when the state of S / N ratio deterioration is detected, in the case of a voice signal, a melody sound whose time point can be easily recognized is recorded. In the case of a video signal, a signal such as blue background is recorded. As a result, the user does not have to see the image in which the disordered image signal sent from the remote controller is mixed with the image signal captured by the camera-integrated VTR. Further, a warning sound is output from the audio monitor on the remote controller side, and a signal such as blue background is also output to the video monitor. In the audio monitor, a warning light may blink instead of the warning sound.

(B) Block Configuration FIG. 2 is a block diagram of the remote control side of the signal communication system according to the present invention, and FIG. 5 is a block diagram of a camera-integrated VTR.

In FIG. 2, the voice signal picked up by the narration microphone 11 is input to the transmission signal processing circuit 13 after being subjected to signal processing such as amplification and modulation in the voice signal processing circuit 12. On the other hand, the video signal captured by the CCD camera 14 is subjected to predetermined video signal processing by the camera signal processing circuit 15, and then the transmission signal processing circuit 1
Input to 3. Further, the command information generated by the key input unit 16 is input to the transmission signal processing circuit 13 after being decoded by the key input signal processing circuit 17.

The pilot signal generating circuit 18 generates pilot signals f1 to f4 (described later) for determining the communication state under the control of a system controller (hereinafter referred to as syscon) 19, and the pilot signal is transmitted to the transmission signal processing circuit 13. And a warning sound generation circuit 28. In the transmission signal processing circuit 13, the pilot signal and the video signal and the audio signal are subjected to multiplexed signal processing and amplified so as to have an output sufficient for driving a light emitting element such as an LED. The signal thus processed is transmitted to the camera-integrated VTR via the transmission circuit 20.

On the other hand, the monitor audio signal and video signal transmitted from the camera-integrated VTR, and the response signal corresponding to the discrimination signal are received by the receiving circuit 21 and supplied to the received signal processing circuit 22. Received signal processing circuit 22
Then, these signals are demodulated. The demodulated audio signal is subjected to predetermined processing by the audio signal processing circuit 23, and then the audio output circuit 24 such as an earphone or a small speaker.
Output from On the other hand, the demodulated video signal is supplied to the video signal processing circuit 25 for video signal processing,
It is output from the LCD monitor 26. Further, the demodulated response signal is supplied to the pilot signal detection circuit 27, and the pilot signals f1 to f4 are detected as response signals from the camera-integrated VTR. Pilot signals f1 to f
4 is input to the syscon 19 and the warning sound generation circuit 28. The warning sound generation circuit 28 detects the signal transmission state based on the signals supplied from the pilot signal generation circuit 18 and the pilot signal detection circuit 27, respectively.

A control signal is supplied from the syscon 19 to the warning sound generating circuit 28. The signal generated by the warning sound generation circuit 28 is supplied to the audio signal processing circuit 23 as a warning sound, for example. As a result, a warning sound is output from the audio output circuit 24 instead of the audio signal. The warning sound generation circuit 28 generates a warning signal for video (for example, blue background), and outputs the output of the warning sound generation circuit 28 to the video signal processing circuit 2.
5 may be supplied. In this case, the LCD monitor 26 is supplied with a blue back signal. The identification signal generating circuit 29 connected to the transmission signal processing circuit 13 is for generating an identification signal of each remote controller, and operates when a plurality of remote controllers are used. This identification signal is multiplexed with the audio signal and the video signal and transmitted to the camera-integrated VTR.

FIG. 3 is a diagram showing the frequency relationship of pilot signals. On the remote control side, for example, pilot signal f
1 is transmitted. The pilot signal f1 is a camera integrated type V
When detected by TR, the camera-integrated VTR transmits a pilot signal f3. Similarly, the pilot signal f
In the case of 2, the pilot signal f4 is the pilot signal f3.
In the case of, the pilot signal f1 is transmitted, and in the case of the pilot signal f4, the pilot signal f2 is transmitted. The frequency difference between pilot signals paired with each pilot signal is f0. When the frequency difference f0 is detected, it is determined that the communication is performed in a good state. Although four pilot signals are set in the above description, the same effect can be obtained if two or more pilot signals are set.

FIG. 4 is a conceptual block diagram of the warning sound generating circuit 28. The pilot signal from the pilot signal generation circuit 18 and the detection signal from the pilot signal detection circuit 27 are input to the frequency difference detection circuit 31, and the frequency difference between them is detected. The output signal of the frequency difference detection circuit 31 is supplied to the filter 32. If there is no return of the pilot signal from the camera-integrated VTR, there is no output from this filter. The output of the filter 32 is
It is input from one side of the comparator 33. The output of the comparator 33 is sampled and held by the sample and hold circuit 34 and then supplied to a syscon (not shown), and it is recognized that the communication is performed well.

In the above description, the method of using the pilot signal for judging communication is shown. However, as another method, in the case of digital transmission, for example, a signal waveform in which the numerical value rises in steps of 4 bits in the header part is used. Transmit and body VT
On the R side, its complement is generated as a return signal. The remote controller may detect this and determine whether or not the sum of the 4-bit data becomes zero.

FIG. 5 is a block diagram of a camera-integrated VTR. First, the recording system will be described. The audio signal input from the microphone 41 is output by the audio signal processing circuit 42 to
After signal processing such as amplification and modulation, the audio memory 43
And the recorded audio signal processing circuit 44. In the recorded voice signal processing circuit 44, this voice signal and the voice signal of the narration from the remote controller described below are mixed. The mixing ratio can be arbitrarily controlled by a control signal from the syscon 45. Further, in the recording voice signal processing circuit 44, the voice signal input via the microphone 41 and the narration voice signal input from the remote controller are compared. Based on this comparison result, the gain of the AGC circuit (not shown) is adjusted so that one voice does not mask the other voice.

As a camera-integrated VTR, 8 m
When the mVTR is used, the voice signal of the narration can be recorded in the PCM recording area, and the voice signal picked up by the microphone of the camera-integrated VTR can be recorded as the AFM signal together with the video signal. When the voice signal of the narration is recorded in the PCM area, the recording voice signal processing circuit 44
In this case, the audio signals are not mixed and are output at the recording timing of the PCM area. Further, in this case, narration after-recording can be performed.

On the other hand, the video signal input from the CCD camera 46 is subjected to predetermined processing by the camera signal processing circuit 47. The output of the camera signal processing circuit 47 is supplied to the recording video signal processing circuit 48 and the video memory 49.

The transmission signal from the remote controller is received by the receiving circuit 50.
Is supplied to the reception signal processing circuit 51 via. In the reception signal processing circuit 51, the signals that are multiplexed and supplied are divided into respective signals. Of these, the audio signal is supplied to the recording audio signal processing circuit 44. In the recording audio signal processing circuit 44, the audio signal from the audio signal processing circuit 42 and the audio signal from the reception signal processing circuit 51 are mixed.
Further, the video signal is supplied to the recording video signal processing circuit 48. In the recording video signal processing circuit 48, the video signal from the camera signal processing circuit 47 and the video signal from the reception signal processing circuit 51 are mixed and, for example, PinP (Picture in P
icture) signal is processed. The control of the size of each PinP video screen can be performed by the syscon 45.

Various command information signals from the remote controller are
In the command signal processing circuit 52, it is decoded and then supplied to the syscon 45. The signal controls the syscon 45. The signal level / pilot signal detection circuit 53, to which the output signal from the reception signal processing circuit 51 is supplied, detects the transmission signal input level from the remote controller and also detects the pilot signal. Signal level /
The detection output of the pilot signal detection circuit 53 is the system controller 45.
Is supplied to.

The signal read from the voice memory 43 is
It is supplied to the voice melody generating circuit 54. The output of the voice melody generating circuit 54 is supplied to one input terminal of the switch 55. The output of the recording audio signal processing circuit 44 is supplied to the other input terminal of the switch 55.
The video signal stored in the video memory 49 is supplied to one input terminal of the switch 57 via the video signal generation circuit 56. The output of the recording video signal processing circuit 48 is supplied to the other input terminal of the switch 57. Switch 5
The audio signal and the video signal selected by 5 and 57 are
The signals are mixed in the signal mixing circuit 58. This mixed signal is amplified by the recording amplifier 59 and then recorded on the magnetic tape 61 via the recording head 60.

The syscon 45 switches the switches 55 and 57 based on the detection output of the signal level / pilot signal detection circuit 53. For example, when the S / N ratio of the transmission signal from the remote controller is lowered, the pilot signal from the remote controller is not detected, and a warning sound is generated (when there is noise), the switches 55 and 57 switch the voice melody generating circuit 54. And the video signal generation circuit 56, respectively. As a result, the audio signal and the video signal from the remote controller in which noise is generated are not selected, and the signals generated by the audio melody generation circuit 54 and the video signal generation circuit 56 are selected by the switches 55 and 57. The signals generated from the voice melody generating circuit 54 and the video signal generating circuit 56 are based on the data from the voice memory 43 and the video memory 49 in which data is stored in advance. The writing of these data can be arbitrarily performed by the microphone 41 and the CCD camera 46 in addition to the replacement of the memory.

The output signals from the switches 55 and 57 are
It is supplied to one input terminal of each of the switches 62 and 63. The system controller 45 switches the switches 62 and 63 and supplies the output signals of the switches 55 and 57 to the transmission signal processing circuit 64. Further, when the pilot signal is detected by the signal level / pilot signal detection circuit 53, the control signal is supplied from the syscon 45 to the pilot signal generation circuit 65. Then, as described above, the control signal is supplied in accordance with the detected pilot signal. The return pilot signal is generated by the pilot signal generation circuit 65. This pilot signal is supplied to the transmission signal processing circuit 64. The transmission signal processing circuit 64 generates a video signal and an audio signal on the monitor on the remote control side. This signal is output from the transmission circuit 66. On the other hand, if the signal level is below the specified value and no pilot signal is detected, there is no return pilot signal,
There is no output from the filter 32 (see FIG. 4) on the remote control side. Therefore, a warning sound or the like is generated on the remote controller side, and the state thereof can be known even if the audio monitor or the video monitor is not being performed.

The identification signal discriminating circuit 71 which receives the signal from the reception signal processing circuit 51 and outputs the signal to the system controller 45 detects and discriminates the discrimination signal of each remote controller from the signals multiplexed and transmitted from the remote controller. The result is output to the system controller 45 to control how the audio signal and the video signal from each remote controller are subjected to the mixing process or the PinP process and recorded.

The reproducing system will be described below. Magnetic tape 61
The signal recorded in (1) is read by the reproducing head 67 and amplified by the reproducing amplifier 68. Of these signals, the audio signal is supplied to the audio reproduction signal processing circuit 69, and the video signal is supplied to the video reproduction signal processing circuit 70. The audio signal subjected to the reproduction signal processing is supplied to the other input terminal of the switch 62. Similarly, the video signal subjected to the reproduction signal processing is supplied to the other input terminal of the switch 63. As described above, the switches 62 and 63 are switched by the syscon 45.

The signal passed through the switches 62 and 63 and the signal from the pilot signal generating circuit 65 are supplied to the transmission signal processing circuit 64. In the transmission signal processing circuit 64, the modulated and multiplexed signals necessary for transmitting a signal to the remote controller are processed, amplified, and then transmitted through the transmission circuit 66.

In the above description, optical transmission of infrared rays or the like is assumed for transmission, but the same effect can be obtained by using radio waves or the like. If the camera-integrated VTR main body is equipped with a remote-controlled electric pantilter, while observing the monitor on the remote controller, record with the camera-integrated VTR pointing in any direction at any time while observing the monitor. You can

(C) Operation Flowchart FIG. 6 is a flowchart of the remote controller in the first embodiment, and FIG. 7 is a flowchart of the camera-integrated VTR. In FIG.
In step 81, it is judged whether or not it is the narration mode. In the case of the narration mode, narration is executed (step 82). On the other hand, if not in the narration mode, the command is transmitted to the camera-integrated VTR (step 89) and the process returns to step 81.

When the narration command is executed in step 82, a pilot signal is generated in step 83 in the sequence described above. This pilot signal is transmitted to the camera-integrated VTR as a discrimination signal (step 84). Then, the return pilot signal (response signal) from the camera-integrated VTR is received (step 85). In step 86, this pilot signal is detected. If the pilot signal is not detected, the warning mode is set (step 90) and the process returns to step 81. On the other hand, when the pilot signal is detected, it is determined whether or not the current mode is the warning mode (step 87). If not in the warning mode, the process returns to step 81. On the other hand, in the case of the warning mode, after canceling the warning mode, step 8
Return to 1.

Next, referring to FIG. 7, a camera-integrated VT
The operation on the R body side will be described. When the signal from the remote controller is received in step 91, it is determined whether the transmitted command is the narration mode or not (step 92).
In the case of the narration mode, the process proceeds to step 93. On the other hand, if it is not the narration mode, step 97
Then, the command mode is executed, and the process returns to step 91. In step 93, the pilot signal (discrimination signal)
Is detected. If the pilot signal is no longer detected during the narration mode, the warning mode is entered in step 98. On the other hand, when the pilot signal is detected, it is determined in step 9 whether the current mode is the warning mode.
It is determined by 4. If it is determined that the warning mode is set, the warning mode is canceled in step 95. And
In step 96, a return pilot signal (response signal) is generated and the process returns to step 91. On the other hand, if it is determined in step 94 that the warning mode is not set, the process proceeds to step 96.

By the way, from the remote controller, the camera integrated VT
By making the transmission method to R and the transmission method from the camera-integrated VTR to the remote control different, it becomes unnecessary to use the pilot signal as described above. For example, as shown in FIGS. 8A and 8B, when the transmission method between the remote controller and the camera-integrated VTR is optical transmission-radio wave transmission as the transmission medium, there are four combinations, and further analog-digital transmission, There are four combinations.
By combining these two transmission methods, 16
The same transmission method can be realized.

(D) In case of 2 remote controller-1 VTR FIG. 9 is a diagram showing a second embodiment of the present invention, in which two camera-integrated VTRs are capable of bidirectional communication or only one direction communication. It is a signal communication system including a remote controller of a stand. In the case of this system, it is assumed that the remote controller shown in FIG. 2 has two systems and the camera-integrated VTR shown in FIG. 5 has one system.

Reference numeral 101 denotes a camera-integrated VTR on the main body side. Needless to say, the control of this camera-integrated VTR 101 can be performed on the main body side, and the attached remote control 10
2 and 103 can also be used. In addition, remote control 1
02 is equipped with a narration microphone 104, an audio monitor output, a CCD camera 105, and a video monitor LCD. Similarly, the remote controller 103 is also equipped with a narration microphone 106, an audio monitor output, a CCD camera 107, and a video monitor LCD.

The audio signal and the video signal transmitted from the remote controllers 102 and 103 are arbitrarily mixed with the video signal or the audio signal of the camera-integrated VTR 101 and recorded on the magnetic tape provided in the camera-integrated VTR 101.
At the same time, these signals are transmitted to the camera-integrated VTR1.
It is transmitted from 01 to the remote controllers 102 and 103 and can be monitored on the remote controller side.

In the case of this system, the identification signal generating circuit 29 in FIG. 2 generates an identification signal for identifying each remote controller. This identification signal is multiplexed with the audio signal and the video signal and transmitted to the camera-integrated VTR. When multiple remotes are used like this,
Each remote controller is given a priority order by which the camera-integrated VTR can be controlled by the above-mentioned identification signal.

On the camera-integrated VTR side, the identification signal discriminating circuit 71 in FIG. 3 discriminates the identification signal of each remote controller from the received signals transmitted from the remote controller. The result is supplied to the syscon 45.
When the signal transmission from the remote controller is optical transmission such as infrared ray, the identification signal is multiplexed with the audio signal or the video signal and transmitted, and the wavelength of the transmitted light is made different between the two remote controllers, and the difference You may identify by. In this case, the receiving circuit 50 shown in FIG.
Includes a light receiving system of two systems and receives a transmission signal from each remote controller.

The signals of the respective systems are discriminated by the reception signal processing circuit 51 in the next stage, and as described above, arbitrarily mixed with the signals of the camera-integrated VTR body or PinP signal processed by the control from the syscon 45. Will be recorded. Furthermore, when transmitting from a remote controller using microwaves or the like, if the two remote controllers use different frequencies, the camera-integrated VTR body side can detect and determine the same processing. it can. On the other hand, during reproduction, each remote controller receives the monitor signal transmitted from the transmitting circuit 66 of FIG.
Audio and video signals can be monitored.

(E) In case of 2 remote controller-2 VTR FIG. 10 is a block diagram showing a third embodiment of the present invention, in which two camera-integrated VTRs can perform bidirectional communication or only one direction communication. A signal communication system including two remote controllers. In the case of this system, it is assumed that there are two remote control systems shown in FIG. 2 and two camera-integrated VTRs shown in FIG.

Reference numerals 111 and 112 denote camera-integrated VTRs on the main body side. Control of these camera-integrated VTRs
This can be done on the main unit side, and the attached remote controls 113 and 1
It is also possible to use 14. The remote control 113 has a narration microphone 115, an audio monitor output,
A CCD camera 116 and a video monitor LCD are provided. Similarly, the remote controller 114 is also equipped with a narration microphone 117, an audio monitor output, a CCD camera 118, and a video monitor LCD. Furthermore, one camera-integrated VTR can transmit an audio signal or a video signal to the other camera-integrated VTR without recording on a magnetic tape. The detailed operation is the same as that described with reference to FIG.

(F) 1 remote controller-2 VTR FIG. 11 is a block diagram showing a fourth embodiment of the present invention, in which two camera-integrated VTRs can perform bidirectional communication or only one direction. It is a signal communication system including one remote controller. In the case of this system, it is assumed that the remote controller shown in FIG. 2 has one system and the camera-integrated VTR shown in FIG. 5 has two systems.

Reference numerals 121 and 122 denote camera-integrated VTRs on the main body side. The control of these camera-integrated VTRs 121 and 122 can be performed not only by the main body side but also by the attached remote controller 123. The remote control 123 includes a narration microphone 124, an audio monitor output,
A CCD camera 125 and a video monitor LCD are provided. Also, as in the above, one camera integrated VT
In R, an audio signal or a video signal can be transmitted to the other camera-integrated VTR without recording on the magnetic tape. The detailed operation is the same as that described with reference to FIG.

In the above-mentioned embodiments, the VTR with a built-in camera is used for explanation. However, in addition to this, any recording medium such as a solid storage element such as a disk or a semiconductor memory or a molecular storage element capable of storing an information signal can be stored. The present invention can be applied to an information signal recording / reproducing communication device that uses a recording medium.

[0049]

According to the present invention, when a voice signal is transmitted by the narration microphone provided in the remote controller,
For example, even if the voice signal is not properly transmitted due to an obstacle or the like, the situation can be recognized by the remote controller side. Therefore, it is possible to prevent continuous useless narration. Along with this, even if the audio signal from the narration microphone is not properly transmitted, even if the user misses recognizing the transmission status, noise due to poor signal transmission is not recorded in the VTR body, and the location of the defective recording is not recorded. Can be easily recognized. Therefore, when the narration is edited or the after-recording is performed thereafter, that portion can be easily found and re-recorded. Also,
A video signal can be transmitted in addition to the audio signal by the camera provided in the remote controller and recorded in the VTR main body. In addition, a remote control capable of two-way communication allows the captured image of the VTR main body to be monitored on the remote control side for remote control operation. When there are a plurality of remote controllers and a camera-integrated VTR main body, it is possible to perform multi-angle shooting, and each of them can be remotely controlled independently. Furthermore, even when the input signal level of the microphone of the VTR becomes low, it is possible to prevent the voice signal of the original recording from being masked by the voice of the narration, and always record the voice in the best possible condition. Can be done.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram of a remote control side of the signal communication system according to the present invention.

FIG. 3 is a diagram showing a frequency relationship of pilot signals.

FIG. 4 is a conceptual block diagram of a warning sound generation circuit.

FIG. 5 is a block diagram of a camera-integrated VTR.

FIG. 6 is a flowchart of a remote controller according to the first embodiment.

FIG. 7 is a flowchart of a camera-integrated VTR according to the first embodiment.

FIG. 8 is a diagram showing a transmission method between a remote controller and a camera-integrated VTR.

FIG. 9 is a diagram showing a second embodiment of the present invention.

FIG. 10 is a diagram showing a third embodiment of the present invention.

FIG. 11 is a diagram showing a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Camera integrated VTR 2 Remote controller 27 Pilot signal detection circuit 28 Warning sound generation circuit 31 Frequency difference detection circuit 53 Signal level / pilot signal detection circuit 54 Voice melody generation circuit 56 Video signal generation circuit

Claims (5)

[Claims] 1. A signal recording / reproducing means for recording / reproducing a signal, and a remote operation control means for remotely operating the signal recording / reproducing means. The signal obtained by the remote operation controlling means and this signal are correctly transmitted. A discrimination signal indicating whether or not it is sent to the signal recording / reproducing means, and when the signal recording / reproducing means detects the discrimination signal, a signal supplied from the remote operation control means and a response corresponding to the discrimination signal. A signal communication system in which a signal is sent back from the signal recording / reproducing means to the remote operation control means. 2. The signal communication system according to claim 1, wherein the remote operation control means is provided with a monitoring means for monitoring a signal sent back from the signal recording / reproducing means. 3. When the discrimination signal is not detected by the signal recording / reproducing means, the monitoring means provided in the remote operation control means is supplied with an internal signal pre-recorded in the signal recording / reproducing means. 3. The method according to claim 2,
The signal communication system described. 4. When there are a plurality of remote control means,
2. The signal communication system according to claim 1, wherein each remote operation control means is provided with a priority order for controlling the signal recording / reproducing means. 5. The signal communication according to claim 1, wherein when the discrimination signal is not detected by the signal recording / reproducing means, the signal supplied from the remote operation control means is not recorded in the signal recording / reproducing means. system.