JPS6257325A - Signal transmission system - Google Patents

Abstract

PURPOSE:To attain the transmission of a signal even without an output terminal to send a signal to a signal transmission side device such as a computer by converting a sound into an electric signal after signal to be sent is converted once into a specific frequency sound signal. CONSTITUTION:An electric signal to be sent is processed at first in the inside of the computer 1, converted into on/off of a sound with a specific scale and outputted. The sound is inputted to a microphone 2 via a space, converted again into an electric signal by the said microphone 2 and amplified by an amplifier 3. A monostable multivibrator 5 turns on the output every time the output of a tone decoder 4 is set for a prescribed time. The drive circuit 6 applies power amplification to the output of the monostable multivibrator 5 to drive a control object device 8. As a result, the control object device 8 is controlled by the computer 1 via a sound of a specific scale.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a signal transmission system for transmitting signals from a signal sending device to a signal receiving device through sound.

2. Description of the Related Art Conventionally, when a signal was to be transmitted from one device to another, the two devices were generally electrically connected to transmit the signal. Therefore, for example, when a computer attempts to control a certain device, the computer and the device to be controlled are electrically connected to transmit signals.

Problems to be Solved by the Invention However, when attempting to transmit signals by electrically connecting a computer and a device to be controlled as described above, (a) an output that can send signals to the device to be controlled; If your computer does not have a terminal, you will need to modify your computer to add such an output terminal.

(b) Even if a computer is provided with an output terminal as described above, if the output terminal is already connected to another device, problems similar to those described above will occur.

(c) Even if a computer is provided with an output terminal as described above, an interface is generally required between the computer and the device to be controlled to match the electrical input/output conditions of both; A different interface is required for each computer model.

(d) Since the computer and the device to be controlled are electrically connected, mutual effects of electrical noise are likely to occur.

(e) If there is incorrect wiring when electrically connecting the computer and the device to be controlled, there is a risk of damaging the computer and/or the device to be controlled.

Such shortcomings were rare.

In addition, devices have been developed that operate by recognizing human voices, but since they use complex human voices as a means of transmission, signal processing becomes extremely complex, making the devices expensive. There were many malfunctions, and it was difficult to operate accurately using voices other than the registered person's voice.

Purpose of the Invention The present invention was made in order to solve the above-mentioned conventional problems, and makes it possible to transmit signals even if the signal transmitting device such as a computer does not have an output terminal for transmitting the signal. There is no need to consider the matching of electrical input/output conditions between the signal sending side equipment and the signal receiving side equipment, and there is no need to consider mutual electrical noise between the signal sending side equipment and the signal receiving side equipment. There is no risk of damage to the signal sending side equipment or signal receiving side equipment due to incorrect wiring, signal processing is relatively simple, equipment can be made inexpensive, and signals can be transmitted accurately. The purpose is to provide a signal transmission method that allows

Means for Solving the Problems The signal transmission method according to the present invention is characterized in that the signal to be transmitted is first converted into a sound signal of a specific frequency, and then this sound is converted into an electrical signal. .

Effects In the present invention, the signal sending device and the signal receiving device are not electrically connected, and the signal is transmitted through sound of a specific frequency, so that the above object can be achieved.

Example Embodiments of the present invention will be described below based on the drawings.

1 and 2 show one embodiment of the invention.

In FIG. 1, reference numeral 1 denotes a personal computer having a sound generation function (music generation function) that generates sounds of various scales and noise sounds using a PSG (programmable sound generator) or the like. 2 is a microphone for picking up sound generated from the computer 1, and 3 is an amplifier for amplifying the output of the microphone 2.

Reference numeral 4 denotes a tone decoder (digital bandpass filter), and this tone decoder 4 can be configured by, for example, a tone decoder IC, NE567, or the like.

5 is a monostable multivibrator that receives the output of the tone decoder 4 as an input, and 6 is a drive circuit such as a relay that uses the output of the monostable multivibrator 5 as an input to drive the device 8 to be controlled. The circuit elements 2 to 6 constitute an electronic circuit 7.

FIG. 2 is a perspective view showing the mechanical structure of this embodiment.

Reference numeral 9 denotes a housing that houses the electronic circuit 7, and this housing 9
The microphone 2 is attached through a flexible tube 10.

Further, the housing 9 is provided with an output terminal 11 for outputting a signal to the control device 8.

Next, the operation of this embodiment will be explained.

Electricity and signals to be transmitted that are generated inside the computer 1 or input to the computer 1 from the outside are
First, it is processed inside the computer 1, converted into on/off tones of a specific scale (frequency), and output. This sound is inputted into the microphone 2 through the space, converted into an electric signal again by the microphone 2, and further amplified by the amplifier 3.

The tone decoder 4 turns on its output only when a signal of a frequency corresponding to the specific scale generated from the computer 1 is input. Therefore, the output signal of the tone decoder 4 turns on and off in response to the on and off of the above-mentioned sound, and even if a sound other than the above-mentioned specific scale is input to the microphone 2, the output of the tone decoder 4 will not be affected by the sound. I don't accept it.

The monostable multivibrator 5 turns on the output of the tone decoder 4 for a certain period of time every time the output of the tone decoder 4 turns on. The drive circuit 6 then amplifies the power of the output of the monostable multivibrator 5 and drives the controlled device 8 . As a result,
The device 8 to be controlled will be controlled by the computer 1 via the notes of the specific scale.

In this signal transmission method, a signal is transmitted from the computer 1 to the controlled device 8 through a note of a specific scale, so the computer 1 does not need to be provided with an output terminal for sending a signal to the controlled device 8. .

Furthermore, since the computer 1 and the device to be controlled 8 are not electrically connected, there is no need to consider matching the electrical output conditions of the computer 1 and the electrical input conditions of the device to be controlled 8; There is no mutual influence of electrical noise between the control target device 1 and the controlled device 8, and there is no possibility that both may be damaged due to incorrect wiring.

In addition, since signals are transmitted using the on/off states of sounds at a predetermined scale (frequency), the structure of the device is extremely simple compared to conventional speech recognition devices, making the device inexpensive. be able to.

In addition, when the signal sending device is a computer with a music generation function as in this embodiment, the program for transmitting the desired signal should be very simple, similar to the music generation program. be able to.

In this embodiment, since the monostable multivibrator 5 is inserted, the length of time that the note of the specific scale is on does not match the length of time that the output of the drive circuit 6 is on. It goes without saying that a configuration in which they match may also be used.

FIG. 3 shows another embodiment of an electronic circuit for processing the output of the microphone 2, in which the electronic circuit 12 of this embodiment is designed to simultaneously control on and off multiple outputs through multiple chords input to the microphone 2. It has become.

To explain this below, 4(1) to 4(n> are tone decoders connected to the output of amplifier 3 that amplifies the output of microphone 2, respectively.
Each of the decoders 4(1) to 4(n) turns on an output signal when a specific musical scale different from each other is input. 5(1) to 5(n) are monostable multivibrators connected to tone decoders 4(1) to 4(n), respectively; 13(1) to 13(n> are monostable multivibrators 5(1) connected to tone decoders 4(1) to 4(n), respectively; ) to 5(n).

In this embodiment, an electrical signal to be transmitted, which is generated inside the computer 1 or inputted to the computer 1 from the outside, is first processed inside the computer 1, and then is converted into a plurality of specific musical scales (frequencies). Multiple chords consisting of combinations of notes are converted into on/off states and output. This multiple chord is input to the microphone 2 through the space, where it is again converted into an electrical signal, and roughly amplified by the amplifier 3.

Therefore, when the multiple chord is generated, the tone decoders 4(1) to 4(1) corresponding to the scales constituting the multiple chord
4(n) is turned on, and as a result, the corresponding amplifier 13
Outputs (1) to (n) connected to (1) to 13(n) are turned on. Specifically, for example, if a chord consisting of two scales corresponding to tone decoders 4(1) and 4(3) is emitted from the computer 1, the output (1)
Only (3) and (3) are turned on.

Therefore, in this embodiment, a plurality of outputs can be controlled on and off simultaneously via multiple chords.

FIG. 4 schematically shows another embodiment of an electronic circuit for processing the output of the microphone 2. In FIG. The electronic circuit 14 of this embodiment is
The output signal is turned on only when the microphone 2 receives a multiple chord including a combination of a plurality of preset scales.

To explain this, 4(1) to 4(3) are tone decoders that receive as input the output of amplifier 3 that amplifies the output of microphone 2, and each of these tone decoders inputs a different specific scale. It is set to turn on when 15 is tone decoder 4(1) to 4(3)
5 is a monostable multivibrator whose input is the output of the AND gate 15, and 13 is an amplifier for amplifying the output of the monostable multivibrator.

In this embodiment, three tone decoders 4(1) to 4
Only when (3) are turned on at the same time, the output of the AND gate 15 and, in turn, the output of the monostable multivibrator 5 and the amplifier 13 are turned on.

Therefore, the output of the amplifier 13 is turned on only when the multiple chord generated from the computer 1 includes three scale components corresponding to the tone decoders 4(1) to 4(3).

In each of the embodiments described above, if a noise sound having the same frequency as a note of a specific scale generated from the computer 1 is input to the microphone, correct signal transmission will be hindered. Unless the three scale components are simultaneously input to the microphone, the output of the electronic circuit 14 will not be turned on, so it is less susceptible to the effects of noise as described above.

FIG. 5 schematically shows another embodiment of an electronic circuit for processing the output of the microphone 2. The electronic circuit of this embodiment can process the output of the microphone 2 by using a plurality of electronic circuits 14 shown in FIG. Control multiple outputs on and off at the same time through input multiple chords.

To explain this below, 14(1) to 14(n
> are electronic circuits having the same configuration as the electronic circuit 14 shown in FIG. 4, and are respectively connected to the output of the amplifier 3 that amplifies the output of the microphone 2. Here, the electronic circuit 1
The tone decoders 4(1) to 14(n) are turned on for different triple chords, respectively.
1) to 4(3) are set.

In this embodiment as well, the transmission signal to be transmitted, which is generated inside the computer 1 or inputted to the computer 1 from the outside, is processed inside the computer 1 and converted into a plurality of specific musical scales (frequencies). A multiple chord consisting of a combination of notes is converted into on/off and output. Then, this multiple chord is input to the microphone 2 through the space, where it is converted back into an electric signal by the microphone 2, and further amplified by the amplifier 3.

Therefore, when the multiple chords are generated, the electronic circuit 1
Only the output of the electronic circuit having three tone decoders corresponding to the scale included in the multiple chords among 4(1) to 14(n) is turned on.

Therefore, in this embodiment, multiple outputs can be controlled on and off at the same time via multiple chords, similar to the embodiment shown in FIG. 3, and, like the embodiment shown in FIG. It can be made difficult to receive.

Up to now, the present invention has been mainly explained using the case where a signal is transmitted from a computer to another device as an example, but the present invention also applies to a case where a signal is transmitted from a device other than a computer to another device. It can also be applied to

Effects of the Invention As described above, the signal transmission method according to the present invention enables signal transmission even if the signal transmission side equipment such as a computer does not have an output terminal for transmitting the signal, and the signal transmission side There is no need to consider the matching of electrical input/output conditions between the separate device and the signal receiving side equipment, there is no influence of mutual electrical noise between the signal sending side equipment and the signal receiving side equipment, and there are no errors. There is no risk of damage to signal sending and receiving equipment due to wiring, signal processing is relatively simple, equipment can be made inexpensive, and signals can be transmitted accurately. It is something that can be effective.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the signal transmission method according to the present invention, FIG. 2 is a perspective view showing the housing of the microphone and electronic circuit in the embodiment, and FIG. 3 is a block diagram showing an embodiment of the signal transmission method according to the present invention. FIG. 4 is a block diagram showing still another embodiment of the electronic circuit for implementing the present invention. FIG. 5 is a block diagram showing another embodiment of the electronic circuit for implementing the present invention. FIG. 3 is a block diagram roughly showing another embodiment. 1... Personal computer, 2... Microphone,
4...Tone decoder, 8...Controlled device, 1
2゜14...Electronic circuit.

Claims (1)

[Scope of Claims] 1) A signal transmission method characterized by first converting a signal to be transmitted into a sound signal of a specific frequency, and then converting this sound into an electrical signal. 2) The signal transmission system according to claim 1, wherein the sound of a specific frequency is a multiple chord.