JPH04615Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention uses a piezoelectric buzzer, etc., to notify when a state change occurs, such as an operation command by key operation or an internal mode change in, for example, a camera-integrated video tape recorder. This invention relates to a state change confirmation device that allows confirmation by sound.

[Conventional technology]

FIG. 4 is a perspective view showing an example of a camera-integrated video tape recorder (hereinafter referred to as movie). In the figure, 1 is the movie main body, 2 is a switch board including switches 2a, 2b, 2c, etc. for operating the movie, 3 is a viewfinder, 9
is a microphone, and 10 is a lens.

FIG. 5 shows an example of the display section 5 that can be seen when looking through the viewfinder 3. 6 is a screen on which the subject to be photographed is displayed, and 7 is a light-emitting display that indicates that a movie is being recorded. , light emitting diodes, etc. are used. 8 is a light emitting body such as a light emitting diode.

Next, the operation will be explained. In Figure 4,
Turn on the power switch (not shown) to activate the electronic rotation built into the movie main body 1.
For example, when taking a picture with a camera, the user points the lens 10 of the movie main body 1 toward the subject, looks through the viewfinder 3, and adjusts the camera so that it is in a recording standby state and is in an appropriate imaging state.

When the subject is in a desired state to be photographed, the switch 2a of the switch board 2 is pressed to record the movie and record the subject image and the sound from the microphone 9 on tape. Next, when you want to temporarily suspend shooting, press the switch 2b on the switch board 2 to enter the recording standby state. At this time, the light-emitting display 7
It is displayed by whether the light is emitted or turned off.

Next, when playing the tape, or fast forwarding or rewinding the tape, the corresponding switch 2c or 2e on the switch board 2 is pressed.
When the reproduction switch 2d is pressed, the reproduced image reproduced from the tape is displayed on the screen 6 of the viewfinder 3. Further, when the tape fast-forward switch 2c is pressed, the tape is fast-forwarded, and the subject image incident on the lens 10 during this time is displayed on the screen 6 of the viewfinder 3.
is displayed, and while fast-forwarding, adjust the camera for the next scene you want to record. At this time, in order to notify that fast forwarding is in progress, for example, the light emitting mode of the light emitting display 7 may be made different from that at the time of recording.
Alternatively, the display is performed by causing the light emitter 8 to emit light. In the case of fast rewinding, the same thing as the above-mentioned fast forwarding is performed.

[Problem that the invention attempts to solve]

Conventional movies are structured as described above, so you can check whether or not a command was actually input by pressing a switch, or whether the operation status is recording, recording standby, or fast forwarding. To check whether it is fast forwarding or reversing, check with the light-emitting display 7 or light-emitting body 8, or take your eyes off the viewfinder 3 and visually check the state of the switch on the switch board 2 or the running state of the tape. In either case, there was a problem in that the user had to take his eyes off the screen 6.

This idea was made to eliminate the above-mentioned drawbacks. For example, in the case of a movie, it is a status change confirmation device that makes it unnecessary to take your eyes off the subject on the screen and allows you to easily check the operation status of the movie. The purpose is to obtain.

[Means for solving problems]

The state change confirmation device according to this invention includes a sound collection means for collecting surrounding sounds, a switch means for detecting a change in the state of operation of a controlled object such as a movie, and intermittent output of the sound collection means. A sound generating means is provided to emit a sound in response to the output of the sound collecting means, and the volume of the sound emitted by the sound generating means is controlled according to the level of external sound input from the movie microphone (sound collecting means). It is something.

[Effect]

The state change confirmation device according to this invention uses the sound emitted by the sounding means to know the operating state of a controlled object, such as a movie, and the level of the sound emitted by the sounding means increases or decreases in accordance with external sounds.
When the surrounding sound is loud, the confirmation sound becomes louder and becomes easier to hear, and when the surrounding sound is lower, the confirmation sound becomes smaller and changes so as not to be harsh on the ears.

[Example of idea]

Hereinafter, one embodiment of this invention will be explained using a movie as an example. In Figure 1, 1~
3, 9 and 10 are the same as the conventional device described above. 21 is a piezoelectric buzzer.

FIG. 2 shows a block diagram of the internal circuitry of the movie. In this figure, 9a is an input terminal that receives the signal a from the microphone, 11 is a preamplifier that amplifies the audio signal a that the input terminal 9a receives;
12 is an automatic level control circuit (hereinafter referred to as ALC) that adjusts the audio signal a to an appropriate level; 13 is an amplifier that amplifies the audio signal a output from the preamplifier 11; 14 is a recording amplifier for the audio signal a from the ALC 12; 15 is a magnetic head that records the audio signal a output from the recording amplifier 14 on a magnetic tape. 1
6 is a changeover switch that cuts off or passes the output e of the amplifier 13, 17 is a rectifier circuit that rectifies the audio signal a amplified by the amplifier 13, and 18 is a rectifier circuit that smoothes the output of the rectifier circuit 17 to obtain an average value output. Low frequency filter (LPF), 19 is a changeover switch that passes or cuts off the output of LPF 19, 20 is a piezoelectric buzzer 2
1 is a buzzer drive circuit for sounding 1, and 22 is a system control circuit which receives command inputs b ₁ , b ₂ ... from switches 2a, 2b, etc., and generates a mode switching signal c and confirmation based on these input commands. Outputs command signal d. 23 is an inverter that inverts the confirmation command signal d; 24 is a motor drive control circuit; 25
is the tape drive motor. 26 is a volume adjusting resistor, and 27 is a switch.

In FIG. 3, A, B, and C show examples of command input by three switches of the switch group on the switch board 2, and the switches 2a and 2, respectively.
These are command inputs b ₁ , b ₂ , b ₃ by b, 2c. In Fig. 3, D is the mode switching signal, E is the confirmation command signal d,
F indicates the audio signal e at the output end of the changeover switch 16, and G indicates the output signal f of the LPF 18.

In FIG. 1, for example, when switch 2a is pressed while a movie is in recording standby, this switch 2a
A command input signal _b1 shown in FIG. 3A is inputted to the system control circuit 22 in FIG. The system control circuit 22 receiving the command input signal b ₁ operates as shown in FIG.
A mode switching signal c shown in FIG. 2 is applied to the motor drive control circuit 24 shown in FIG. 2 to drive the motor 25 to run the tape and enter the recording state. Audio signal a from microphone 9 is sent to preamplifier 11 and ALC.
12. After passing through the recording amplifier 14 and the magnetic head 15,
The video is recorded on the tape of the movie main body 1.

On the other hand, the system control circuit 22 receives a command input signal
b ₁ , a confirmation command signal d for, for example, 0.2 seconds is generated as shown in FIG. 3E, and this is applied to the changeover switch 19, closing its contact. Then
The input f of the LPF 18 is guided to the buzzer drive circuit 20, and the output of the buzzer drive circuit 20 causes the piezoelectric buzzer 21 to emit a sound for, for example, 0.2 seconds. This sound confirms that the switch 2a has been pressed securely. Here, the output f of the LPF 18 is a smoothed output obtained by rectifying the audio signal e shown in FIG. As shown in FIG. 3G, the average level of the audio signal input to the microphone 9 is shown.

Therefore, when the average level of the input audio signal a increases, that is, when the sound around the movie main body 1 increases, the volume of the piezoelectric buzzer 21 also increases, making it easier to confirm. Furthermore, when the sound around the movie main body 1 becomes smaller, the volume of the piezoelectric buzzer 21 also becomes smaller.
This avoids jarring. In addition, amplifier 1
The output e of 3 is the confirmation command signal d that is sent to the inverter 23.
When the inverted output is applied to the changeover switch 16, the connection to the rectifier circuit 17 is cut off (the piezoelectric buzzer makes a sound during this time), so in the unlikely event that the piezoelectric buzzer 2's sound is input to the microphone 9. However, since the sound is not applied to the buzzer drive circuit 20, the volume of the piezoelectric buzzer 21 is controlled only according to the sound external to the movie main body 1.

When, for example, switch 2b is pressed while in the recording state, a command input signal _b2 shown in FIG. 3B is inputted from switch 2b to system control circuit 22 in FIG. 2. The system control circuit 22 that received the command input signal _b2 transmits the mode switching signal c shown in FIG. 3D to the motor drive control circuit 2 shown in FIG.
4 to stop the motor 25 and stop tape running. Meanwhile, the system control circuit 22 generates a confirmation command signal d shown in FIG. 3E, which is applied to the changeover switch 19, closing its contact.
Then, as described above, the piezoelectric buzzer 2 emits a sound at a level corresponding to the average level of the audio input to the microphone 9. This sound confirms that the switch 2b has been pressed correctly.

As a next example, when the switch 2c in FIG. 1 is pressed, the command input signal _b3 shown in FIG. 3C is sent from the switch 2c to the system control circuit 2 in FIG.
2 is input. The system control circuit 22, which has received the command input signal _b3 , applies the mode switching signal c shown in FIG. 3D to the motor drive control circuit 24 shown in FIG. Enter fast forward mode. On the other hand, system control circuit 2
2 receives the command input signal _b3 and generates a confirmation command signal d as shown in FIG. Similarly, the piezoelectric buzzer 21 makes a sound, confirming that the switch 2c has been pressed.
A confirmation command signal d is intermittently issued as shown in
The piezoelectric buzzer 21 emits a sound in the same manner as described above to indicate the operation status of the movie.

If the switch 2b is pressed in such a case, the same thing as the case of pressing the switch 2b described above will occur, and the sound of the piezoelectric buzzer 21 will cause the switch 2b to be pressed.
It is confirmed that b was pressed correctly. If another switch is pressed in the same way, if the switch is pressed securely, the confirmation command signal d is changed to the sound of the piezoelectric buzzer 21, and if necessary, during the subsequent operation state, for example, the above A confirmation sound is now emitted as in the case of fast forwarding.

Note that a resistor 26 for adjusting the volume is provided so that the volume of the piezoelectric buzzer 21 can be changed according to the operator's needs. Also, the operator
When the sound of the piezoelectric buzzer 21 is not required, the operation of the piezoelectric buzzer drive circuit 20 can be stopped by the switch 27.

Now, in the above embodiment, a confirmation sound is generated when the command input switch is pressed in the movie, and during the operation state transitioned in response to the command input. , when an operation command is automatically issued within the movie, or when the operation transitions due to it,
Alternatively, the piezoelectric buzzer 21 can generate a sound in the same manner as described above even in the operating state after the operation transition. The same thing can be done in the case where the piezoelectric buzzer 21 makes a warning sound or caution sound when a state change occurs inside a movie, such as when an abnormality occurs in the tape running. In the above embodiment, the volume of external sound is detected using a signal from a microphone used for recording, but a dedicated sound collector may be provided.

In the above embodiment, the present invention is particularly effective when used under various conditions such as indoors and outdoors, in a quiet environment, and in an environment with a lot of ambient noise. However, the present invention is not limited to this. Needless to say, it can be applied to so-called AV equipment such as audio equipment and visual equipment.

The present invention can also be applied to cases in which key inputs on a calculator, push-button telephone, etc. are confirmed by a sounding means.

Furthermore, the present invention can be applied to wristwatches, stopwatches, etc., where the sounding means produces a confirmation sound when the time status changes.

Furthermore, although the piezoelectric buzzer 21 is used as the sounding means in the above embodiment, a speaker may be used instead.

Furthermore, in the above embodiment, the piezoelectric buzzer 21
Although the volume of the sound is controlled, it does not necessarily have to be based on constant sound, but it can also maintain a signal based on the sound level caused by external sound at the beginning of the operation of the device, for example,
Thereafter, the sound level of the piezoelectric buzzer may be maintained according to its output. Alternatively, external sound may be sampled and captured at appropriate intervals while the device is in operation, and the sound level of the piezoelectric buzzer 21 may be switched as appropriate based on the level of the external sound obtained at each sampling. .

[Effect of idea]

As described above, according to this invention, the volume of the sound produced by the sounding means is controlled in accordance with the volume of the surrounding sound of the controlled object in order to confirm the change in the state of operation of the controlled object. This has the effect that confirmation can be easily performed even when the surrounding noise is loud, and when the surroundings are quiet, the confirmation sound is low and does not become harsh on the ears.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a movie which is an object to be controlled according to an embodiment of this invention, FIG. 2 is a block diagram showing the circuit of the movie shown in FIG. 1, and FIG. 4 is a perspective view showing a movie, which is a conventional controlled object, and FIG. 5 is a diagram showing a light emitting display for confirmation provided in a viewfinder in a movie. It is. In the figure, 2a to 2e are switches that change the operation of the movie, 9 is a microphone, 16, 19
1 is a switch, 17 is a rectifier circuit, 18 is a low-frequency wave generator, 21 is a piezoelectric buzzer, and 22 is a system control circuit.

Claims (1)

[Claims for Utility Model Registration] (1) A state change confirmation device for confirming a change in the state of motion of a controlled object using an audible sound, comprising: a sound collection means for collecting surrounding sounds; A switch means for detecting a change in state and intermittent the output of the sound collection means, and a sound generation means for generating a confirmation sound of a magnitude corresponding to the output of the sound collection means inputted via the switch means. Status change confirmation device. (2) The state change confirmation device according to claim 1, wherein the sound generating means is driven by a signal obtained by rectifying and smoothing the output of the sound collecting means. (3) The switch means includes a first switch that cuts off the output of the sound collection means when a change in the state of operation in the controlled object is detected, and a sound generation means that outputs the rectified and smoothed output of the sound collection means. 2. The state change confirmation device according to claim 2, further comprising a second switch for supplying a signal to the user. (4) Utility model registration claim 1, characterized in that the controlled object is a camera-integrated video tape recorder, and the sound collection means is a microphone provided in the camera-integrated video tape recorder.
The state change confirmation device according to any one of Items 1 to 3.