JPH09205612A - Sound signal input/output changeover device and image pickup recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the size of a device small such as a recording and reproducing device having a function of recording and reproducing of sound signal. SOLUTION: In the sound signal input/output changeover device, when an operating mode of a camcorder is set to the recording mode, a selector switch 24 switches the connection between a common use connection terminal 21 and an external microphone input circuit 23, that is, the connection of a fixed terminal to a changeover terminal 24b under the control of a CPU 26. When the operating mode of the camcorder is set to the reproduction mode, the selector switch 24 switches the connection between the common use connection terminal 21 and a headphone output circuit 22, that is, the connection of a fixed terminal to the changeover terminal 24b under the control of a CPU 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording mode in which an audio signal is input to an input means and the input audio signal is recorded in a recording medium, and the audio signal recorded in the recording medium is reproduced to obtain the audio signal. An audio signal input / output switching device provided in a device having a reproduction mode for outputting
And an image recording / reproducing apparatus using the audio signal input / output switching device.

[0002]

2. Description of the Related Art Generally, an image pickup / recording / reproducing apparatus, a so-called camera-integrated VTR, picks up an image of a subject, an image pickup system for generating an image pickup signal indicating the image of the subject, a voice is taken in, and the voice is converted into a voice signal. An audio processing system, a recording processing system for recording an image pickup signal as a video signal of a predetermined standard on a recording medium and a recording process for recording an audio signal on the recording medium, and a video signal and audio recorded on the recording medium. It is composed of a reproduction processing system for performing reproduction processing for reproducing a signal.

In this camera-integrated VTR, a microphone terminal for connecting an external microphone for capturing an external sound and a headphone terminal for connecting a headphone for converting a reproduced audio signal into a sound are independently provided. ing.

[0004]

However, in the above-mentioned conventional camera-integrated VTR, since the microphone terminal and the headphone terminal are provided independently of each other,
In recent years, under the circumstances where further miniaturization of the device is strongly desired, it is difficult to further save space by providing a microphone terminal and a headphone terminal independently of each other, and there is a demand for miniaturization of the device. I cannot be fully satisfied.

As described above, generally, in a recording / reproducing apparatus having a function of recording and reproducing an audio signal, an input terminal such as a microphone terminal for connecting an external microphone and a headphone for outputting the reproduced audio signal are connected. It is difficult to reduce the size of such a recording / reproducing apparatus because output terminals such as a headphone terminal and the like are provided independently, and the input / output terminals are used to input and output audio. .

It is an object of the present invention to provide an audio signal input / output switching device capable of miniaturizing a device such as a recording / reproducing device having a function of recording / reproducing an audio signal.

Another object of the present invention is to provide an image recording / reproducing apparatus capable of inputting / outputting an audio signal without increasing the size of the apparatus.

[0008]

According to the first aspect of the present invention,
It has a recording mode in which an audio signal is input to the input means and the input audio signal is recorded in a recording medium, and a reproduction mode in which the audio signal recorded in the recording medium is reproduced and the audio signal is output to the output means. In the audio signal input / output switching device provided in the device, one dual-purpose connection capable of connecting each of an acoustoelectric converter that converts audio into the audio signal and an electroacoustic converter that converts the audio signal into audio Any one of a terminal, a first terminal for connecting the acoustoelectric converter and the input means, and a second terminal for connecting the output means and the electroacoustic converter. Allocation means for allocating the dual-purpose connection terminal to the terminal.

According to a second aspect of the present invention, in the audio signal input / output switching device according to the first aspect, the assigning means assigns the dual-purpose connection terminal and the input when the dual-purpose connection terminal is assigned to the first terminal. Means for connecting, and when the dual-purpose connection terminal is assigned to the second terminal, a switching switch for switching the dual-purpose connection terminal and the output means is connected.

According to a third aspect of the present invention, in the audio signal input / output switching device according to the second aspect, there is provided control means for discriminating a mode of the device and controlling the switching operation of the changeover switch according to the discrimination result. It is characterized by being provided.

According to a fourth aspect of the present invention, there is provided an image pickup means for taking in a subject image and generating an image pickup signal showing the subject image, and taking in the image pickup signal and subjecting the fetched image pickup signal to predetermined processing. An imaging signal recording processing means for generating a video signal, an audio input means for capturing an audio signal, an audio signal recording processing means for performing a predetermined process on the captured audio signal, and an output from the imaging signal recording processing means. Recording means for recording the video signal and the audio signal output from the audio signal recording processing means on a recording medium, a reproducing means for separately reproducing the video signal and the audio signal recorded on the recording medium, and the reproducing means. In an image pickup / recording / reproducing apparatus comprising: a video signal output means for outputting a reproduced video signal; and an audio signal output means for outputting the reproduced audio signal. One accommodating connection terminal capable of connecting each of an acoustoelectric converter that converts voice into the captured audio signal and an electroacoustic converter that converts the output audio signal into voice, and the acoustoelectric converter, The dual-purpose connection to any one of a first terminal for connecting to the audio input means and a second terminal for connecting the audio signal output means and the electroacoustic transducer. And a means for allocating the terminals.

According to a fifth aspect of the present invention, in the imaging recording / reproducing apparatus according to the fourth aspect, the assigning means assigns the dual-purpose connection terminal to the first terminal, and the dual-purpose connection terminal and the voice input means. And a switching switch for connecting the dual-purpose connection terminal and the audio signal output means when the dual-purpose connection terminal is assigned to the second terminal.

According to a sixth aspect of the present invention, in the image recording / reproducing apparatus according to the fifth aspect, it is determined whether the recording operation is performed by the recording means or the reproducing operation is performed by the reproducing means, and the changeover switch is turned on according to the determination result. A control means for controlling the switching operation is provided.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a block diagram showing a configuration of a first embodiment of an audio signal input / output switching device of the present invention. In the present embodiment, an example applied to a camera-integrated VTR including an image pickup system, an audio processing system, a recording processing system, and a reproduction processing system is shown.

The camera-integrated VTR is an image pickup system for picking up a subject image and generating an image pickup signal indicating the subject image.
An audio processing system that captures audio and converts the audio into an audio signal, and a recording processing system that records an image pickup signal as a video signal of a predetermined standard on a recording medium and a recording process for recording the audio signal on the recording medium. And a reproduction processing system for performing reproduction processing for reproducing the video signal and the audio signal recorded on the recording medium.

In this camera-integrated VTR, an external microphone is used for converting an external sound into a sound signal, and a headphone is used for converting a reproduced sound signal into a sound signal. An output switching device is provided.

As shown in FIG. 1, the audio signal input / output switching device has a dual-purpose connection terminal 21 which also serves as a connection terminal for an external microphone (not shown) and a headphone (not shown).
Is provided. One connection point of the dual-purpose connection terminal 21 is connected to the reference potential, and the other connection point is connected to the fixed terminal of the selection switch 24.

The selection switch 24 has two switching terminals 24a and 24b in addition to the fixed terminal. One switching terminal 24a is connected to the headphone output circuit 22, and the other switching terminal 24b is connected to the external microphone input circuit 23.
It is connected to the. The selection switch 24 performs a switching operation so as to selectively connect the fixed terminal to either one of the switching terminals 24a and 24b, and by this switching operation, connection between the dual-purpose connection terminal 21 and the headphone output circuit 22 and One of the connections between the dual-purpose connection terminal 21 and the external microphone input circuit 23 is selected.

When the connection between the dual-purpose connection terminal 21 and the headphone output circuit 22 is selected, the headphone output circuit 2 is selected.
The reproduced audio signal output from the output terminal 2 is output to the dual-purpose connection terminal 21 via the selection switch 24.
By connecting a headphone to 1, the sound of the reproduced sound signal can be heard from the headphone.

On the other hand, when the connection between the dual-purpose connection terminal 21 and the external microphone input circuit 23 is selected, the external microphone is connected to the dual-purpose connection terminal 21 to select the audio signal of the voice captured by the external microphone. It is input to the external microphone input circuit 23 via the switch 24.

The switching operation of the selection switch 24 is CP
Controlled by U26. The CPU 26 determines the operation mode of the camera-integrated VTR, and controls the switching operation of the selection switch 24 according to the determination result. Specifically, when the operation mode of the camera-integrated VTR is the recording mode, the selection switch 24 controls the connection of the dual-purpose connection terminal 21 and the external microphone input circuit 23, that is, the fixed terminal to the switching terminal 24b under the control of the CPU 26. The switching operation is performed so as to connect. When the operation mode of the camera-integrated VTR is the reproduction mode, the selection switch 24 is switched under the control of the CPU 26 so that the dual-purpose connection terminal 21 and the headphone output circuit 22 are connected, that is, the fixed terminal is connected to the switching terminal 24a. I do.

As described above, by providing the audio signal input / output switching device for sharing the external microphone and the headphone respectively, the connection terminal of the external microphone and the connection terminal of the headphone can be combined by the single combined connection terminal 21. , It is not necessary to provide input terminals such as a microphone terminal to which an external microphone is connected and output terminals such as a headphone terminal to which a headphone that outputs a reproduced audio signal is separately provided, and audio signals can be recorded and reproduced. A device such as a recording / reproducing device having a function can be downsized.

The CPU 26 may be provided exclusively for controlling the switching operation of the selection switch 24.
In addition to controlling the switching operation of the selection switch 24, the control unit 6 can control the entire apparatus of the camera-integrated VTR.

Next, the structure of a camera-integrated VTR in which the audio signal input / output switching device of the first embodiment described above is used will be described with reference to FIG. FIG. 2 is a block diagram showing the configuration of a camera-integrated VTR in which the audio signal input / output switching device of FIG. 1 is used.

As shown in FIG. 2, the camera-integrated VTR is a connection terminal for connecting an optical lens 1 for capturing a subject image as a member constituting an image pickup system, an external microphone (not shown), and a headphone (not shown). And a dual-purpose connection terminal 21 that also serves as the.

In the recording mode, the subject image captured by the optical lens 1 is guided to the light receiving surface of the CCD 2, and the CCD 2 photoelectrically converts the subject image into an image pickup signal and outputs it.

The image pickup signal output from the CCD 2 is given to the camera signal processing circuit 3, and the camera signal processing circuit 3 subjects the image pickup signal to predetermined processing.

The image pickup signal processed by the camera signal processing circuit 3 is supplied to the video signal processing circuit 4. The video signal processing circuit 4 converts the image pickup signal into a video recording RF signal and outputs the video recording RF signal to the recording amplifier 5.

In the recording mode, the dual-purpose connection terminal 2
An external microphone is connected to 1, and the audio signal of the audio captured by the external microphone is given to the selection switch 24.
Under the control of the CPU 16, the selection switch 24 connects the dual-purpose connection terminal 21 and the microphone signal processing circuit 9, that is, the fixed terminal and the switching terminal 24b. Therefore, the audio signal of the external microphone is given to the microphone signal processing circuit 9 via the selection switch 24.

The microphone signal processing circuit 9 performs a predetermined process on the audio signal and then outputs the audio signal to the audio signal processing circuit 10.

The voice signal processing circuit 10 converts the voice signal into a voice recording RF signal and outputs the voice recording RF signal to the recording amplifier 5.

The recording amplifier 5 has a tracking pilot signal from the servo 17, an image recording RF signal, and an audio recording R.
The F signal is mixed and the mixed RF signal is amplified. The mixed RF signal output from the recording amplifier 5 is recorded on a magnetic tape (not shown) by the head 6 that performs recording and reproduction.

On the other hand, in the reproduction mode, the RF signal recorded on the magnetic tape is reproduced by the head 6, and the reproduced RF signal is given to the reproduction up 11. The reproduction amplifier 11 separates the reproduction RF signal into a tracking pilot signal, a video RF signal, and an audio RF signal, and amplifies each signal. The tracking pilot signal is servo 17
The video RF signal is sent to the video signal processing circuit 12 and the audio RF is sent.
The signals are output to the audio signal processing circuit 14, respectively.

The video signal processing circuit 12 demodulates the video RF signal into a video baseband signal, and the video baseband signal is output to the video output terminal 13.

The audio signal processing circuit 14 demodulates the audio RF signal into an audio signal, and the audio signal is output to the headphone output circuit 22. The headphone output circuit 22 outputs the audio signal to the selection switch 24.

In the reproduction mode, the selection switch 24 connects the dual-purpose connection terminal 21 and the headphone output circuit 22, that is, the fixed terminal and the switching terminal 24a. Therefore, the audio signal from the headphone output circuit 22 is output to the dual-purpose connection terminal 21 via the selection switch 24, and by connecting the headphone to the dual-purpose connection terminal 21, the audio of the audio signal can be heard from the headphones.

The CPU 16 controls the switching operation of the selection switch 24 described above in accordance with the operation mode, and also controls each of the blocks described above.

The CPU 16 cooperates with the dual-purpose connection terminal 21 and the selection switch 24 to form an audio signal input / output switching device.

The control of the switching operation of the selection switch 24 by the CPU 16 is described above.
Since the control contents are the same as those of the above, the description thereof will be omitted.

As described above, by providing the audio signal input / output switching device for sharing the external microphone and the headphone respectively, the connection terminal of the external microphone and the connection terminal of the headphone can be shared by the single-purpose connection terminal 21. It is not necessary to provide an input terminal such as a microphone terminal to which an external microphone is connected and an output terminal such as a headphone terminal to which a headphone that outputs a reproduced audio signal is separately provided. Can be miniaturized. That is, it is possible to input and output the audio signal without increasing the size of the device.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a block diagram showing the configuration of the second embodiment of the audio signal input / output switching device of the present invention.

In this embodiment, as in the first embodiment, an audio signal input / output switching device applied to a camera-integrated VTR is shown.

As shown in FIG. 3, the audio signal input / output switching device has a dual-purpose connection terminal 31 which also serves as a connection terminal for an external microphone (not shown) and a headphone (not shown).
Is provided. One connection point of the dual-purpose connection terminal 31 is connected to the reference potential, and the other connection point is connected to the input terminal of the selection switch 34 and the output terminal of the selection switch 35.

The output terminal of the selection switch 34 is connected to the headphone output circuit 32, and the input terminal of the selection switch 35 is connected to the external microphone input circuit 33. The ON / OFF operation of each selection switch 34, 35 is performed by the CPU 3
It is performed by the control of 6.

The CPU 36 determines the operation mode of the camera-integrated VTR, and controls the on / off operation of each selection switch 34, 35 according to the determination result.

Specifically, when the operation mode of the camera-integrated VTR is the recording mode, the selection switch 34 turns off and the selection switch 35 turns on under the control of the CPU 36, and the dual-purpose connection terminal 31 and Connection with the external microphone input circuit 33 is performed. When the selection switch 35 is turned on, the selection switch 34 is turned off. When the connection between the dual-purpose connection terminal 31 and the external microphone input circuit 33 is selected, the external microphone is connected to the dual-purpose connection terminal 31 so that the audio signal of the voice captured by the external microphone is selected by the selection switch 3.
It is input to the external microphone input circuit 33 via 5.

On the other hand, when the operation mode of the camera-integrated VTR is the reproduction mode, the selection switch 34 is turned on by the control of the CPU 36, and the dual-purpose connection terminal 31 and the headphone output circuit 32 are connected. .
When the selection switch 34 is turned on, the selection switch 35
Turns off. When the connection between the dual-purpose connection terminal 31 and the headphone output circuit 32 is selected, the reproduction audio signal output from the headphone output circuit 32 is selected by the selection switch 34.
Is output to the dual-purpose connection terminal 31 via the, and by connecting a headphone to the dual-purpose connection terminal 31, the sound of the reproduced audio signal can be heard from the headphone.

As described above, by providing the audio signal input / output switching device for sharing the external microphone and the headphone respectively, the connection terminal of the external microphone and the connection terminal of the headphone can be shared by the single-purpose connection terminal 31. , It is not necessary to provide input terminals such as a microphone terminal to which an external microphone is connected and output terminals such as a headphone terminal to which a headphone that outputs a reproduced audio signal is separately provided, and audio signals can be recorded and reproduced. A device such as a recording / reproducing device having a function can be downsized.

[0050]

As described above, according to the audio signal input / output switching device of the first aspect, an acoustoelectric converter for converting a sound into a sound signal and an electroacoustic converter for converting a sound signal into a sound. And a first terminal for connecting the acoustoelectric transducer and the input means by the allocating means and a connection between the output means and the electroacoustic transducer. Since the dual-purpose connection terminal is assigned to any one of the second terminals of the above, it is possible to miniaturize a device such as a recording / reproducing device having a function of recording and reproducing an audio signal.

According to the audio signal input / output switching device of the second aspect, when the dual-purpose connection terminal is assigned to the assigning means to the first terminal, the dual-purpose connection terminal and the input means are switched so that the dual-purpose connection terminal is connected. When the terminal is assigned to the second terminal, a changeover switch for switching the dual-purpose connection terminal and the output means to be connected is provided, so that the dual-purpose connection terminal can be easily assigned to the first terminal or the second terminal. It can be carried out.

According to the audio signal input / output switching device of the third aspect, the control means discriminates the mode of the device and controls the switching operation of the changeover switch according to the discrimination result.
The assignment of the dual-purpose connection terminal to the first terminal or the second terminal can be appropriately performed according to the mode of the device.

According to the image-capturing recording / reproducing apparatus of the fourth aspect, each of an acoustoelectric converter for converting sound into the taken-in sound signal and an electroacoustic converter for converting the outputted sound signal into sound is provided. In order to connect the electroacoustic transducer with the first terminal for connecting the acoustoelectric transducer and the voice inputting means with the allocating means, and the electroacoustic transducer. Since the dual-purpose connection terminal is assigned to any one of the second terminals of the above, the audio signal can be input / output without increasing the size of the device.

According to the fifth aspect of the image recording / reproducing apparatus, when the dual purpose connecting terminal is assigned to the assigning means, the dual purpose connecting terminal and the voice input means are switched so that the dual purpose connecting terminal is connected to the voice input means. Is assigned to the second terminal, a changeover switch is provided for changing over so that the dual-purpose connection terminal and the audio signal output means are connected.
It is possible to easily assign the dual-purpose connection terminal to the second terminal or the second terminal.

According to the sixth aspect of the image recording / reproducing apparatus, the control means determines whether the recording operation is performed by the recording means or the reproduction operation is performed by the reproducing means, and the switching operation of the changeover switch is controlled according to the determination result. Therefore, the dual-purpose connection terminal can be appropriately assigned to the first terminal or the second terminal according to the mode of the device.

[Brief description of drawings]

FIG. 1 is a first embodiment of an audio signal input / output switching device of the present invention.
It is a block diagram showing composition of an embodiment.

FIG. 2 is a block diagram showing a configuration of a camera-integrated VTR in which the audio signal input / output switching device of FIG. 1 is used.

FIG. 3 is a second embodiment of the audio signal input / output switching device of the present invention.
It is a block diagram showing composition of an embodiment.

[Explanation of symbols]

 9 microphone signal processing circuit 16, 26, 36 CPU 21, 31 dual-purpose connection terminal 22, 32 headphone output circuit 23, 33 external microphone input circuit 24, 34, 35 selection switch

Claims (6)

[Claims] 1. A recording mode in which an audio signal is input to an input unit and the input audio signal is recorded in a recording medium, and an audio signal recorded in the recording medium is reproduced and the audio signal is output to an output unit. In an audio signal input / output switching device provided in a device having a reproduction mode, an acoustoelectric converter for converting a sound into the sound signal and an electroacoustic converter for converting the sound signal into a sound can be connected to each other. Na 1
One of the dual-purpose connection terminals, a first terminal for connecting the acoustoelectric converter and the input means, and a second terminal for connecting the output means and the electroacoustic converter An audio signal input / output switching device, comprising: allocating means for allocating the dual-purpose connection terminal to one of the terminals. 2. The assigning means, when assigning the dual-purpose connection terminal to the first terminal, switches so that the dual-purpose connection terminal and the input means are connected to each other, and the dual-purpose connection terminal is connected to the second terminal. 2. The audio signal input / output switching device according to claim 1, further comprising a changeover switch for changing over so that the dual-purpose connection terminal and the output means are connected to each other. 3. The audio signal input / output switching device according to claim 2, further comprising control means for determining a mode of the device and controlling a switching operation of the changeover switch according to a result of the determination. 4. An image pickup unit for taking in a subject image and generating an image pickup signal showing the subject image; and an image pickup unit for taking in the image pickup signal and subjecting the taken image pickup signal to a predetermined process to produce a video signal. Signal recording processing means, audio input means for taking in an audio signal, audio signal recording processing means for subjecting the taken-in audio signal to predetermined processing, and video signal and the audio signal outputted from the imaging signal recording processing means. Recording means for recording the audio signal output from the recording processing means on a recording medium, reproducing means for separately reproducing the video signal and the audio signal recorded on the recording medium, and outputting the reproduced video signal. In an imaging recording / reproducing apparatus comprising video signal output means and audio signal output means for outputting the reproduced audio signal,
One accommodating connection terminal capable of connecting each of an acoustoelectric converter that converts voice into the captured audio signal and an electroacoustic converter that converts the output audio signal into voice, and the acoustoelectric converter, The dual-purpose connection to any one of a first terminal for connecting to the audio input means and a second terminal for connecting the audio signal output means and the electroacoustic transducer. An image capturing / recording / reproducing apparatus, comprising: an allocation unit for allocating a terminal. 5. The allocating means, when allocating the dual-purpose connection terminal to the first terminal, switches the dual-purpose connection terminal and the voice input means so that the dual-purpose connection terminal is connected to the second input terminal. 5. The image-capturing recording / reproducing apparatus according to claim 4, further comprising a changeover switch for changing the connection between the dual-purpose connection terminal and the audio signal output means when the terminal is assigned. 6. A control means for determining whether the recording operation is performed by the recording means or the reproducing operation by the reproducing means and controlling the changeover operation of the changeover switch according to a result of the determination. The imaging recording / reproducing device described.