JPS592092A - Connector for electronic musical instrument - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a connection device for a child musical instrument.

Conventionally, when connecting multiple restraint instruments, Hf,
It uses restraint. For this reason, there is a drawback that the noise resistance is low and it becomes a cause of noise generation.

In addition, when connecting multiple restraint instruments as described above, a large number of data signal lines and IT source lines are required, and the wiring may become complicated. Using the same cable had the disadvantage that sufficient shielding was required to prevent noise from the Machibara line from adversely affecting the data signal.

This invention was made in consideration of the above points, and its purpose is to provide a m-child musical instrument that has good noise resistance and is capable of reliably transmitting data without emitting external noise. The purpose is to provide connection devices for

Hereinafter, an embodiment in which the present invention is applied to an N1 child organ will be explained based on FIGS. 1 to 4. Figure 1 shows the connections of two manual keyboards, a foot keyboard, a speaker, etc. In this figure, 1 is the main keyboard, 2 is the sub & board, 3 is the foot keyboard, and 4.5 is the speaker. , 6 is a foot volume pedal, and 7 is a sustain pedal.

The main keyboard 1 includes a keyboard section 8, a timbre specification section 9, a rhythm specification 1% 10 , and an accompaniment specification rfl:1.1, and is connectable to a memory back 12. The cupboard section 8 has a large number of white keys and black keys arranged, and the tone designation section 9 has the right to select the tone. The rhythm specifying section 10 is a switch group for selecting and specifying a rhythm, and the accompaniment specifying ff1511 is for outputting accompaniment control information. The memory pack 12 stores musical tone information for automatic performance, and is, for example, RAM (Random Access Memory) or FtO.
M (read-only memory), etc. The main keyboard 1 also has two data terminals 1a, lb, 2.
Three output terminals 1c, ld, ii source terminal 1e, foot volume terminal 1f, and sustain terminal 1g are provided.

The sub-keyboard 2 includes a cupboard section 13 and a tone specifying section 14, and the sub-keyboard 2 includes a data terminal 2a, two output terminals 2b, 2a, and a source terminal 2a.

A foot volume terminal 2e and a sustain crystal 2f are provided.

The above-mentioned ashiyuki board 3 is used by the performer to play with his/her feet, and is equipped with a large number of foot sticks 15.
is provided with a data terminal 3a, an output terminal 3b, an output terminal 3c, and a foot volume terminal 3d. Further, the above-mentioned speakers 4.5 are for emitting musical sounds, and each of these speakers 4.5 has three-horn input MFA elements 4a, 4b,
4c, 5a, 5b, 50% three flood output terminals 4a,
4e, 4f, 5d, 5ex5f, power input terminal 4gx5
g is provided.

The main keyboard 1, the sub keyboard 2, the multi-leg J keyboard 3, the speaker 4.5, the foot volume pedal 6, and the sustain pedal 7 are connected as follows. That is, one data cable 1a of the main moving plate 1 is connected to the optical fiber 1.
6 to the data terminal 2a of the sub keyboard 2, and the other data terminal 16 is connected to the data terminal 3a of the foot keyboard 3 via an optical fiber 17. Sorry, the output terminals 1c and ld of the main panel 1 are m-18, respectively.
19 to each input terminal 4a of each speaker 4.5.

5a, and the m source terminal 1e is connected to the source output 1/iM terminal 4d of the speaker 4 via the C terminal 20. This is the ridge, each output terminal 2b of the sub keyboard 2.

2C connects each loudspeaker 4.5 through the respective r-shaped proboscis 21.22
The power terminal 2d of the sub keyboard 2 is connected to the power output terminal 4e of the speaker 4 via the KL brain 23. Further, the output terminal 3b of the footboard 3 is connected to the input terminal 40 of the speaker 4 via the electric wire 24, and the power terminal 3o is connected to the nL source output terminal 4f of the speaker 4 via m#25. There is. In addition, the foot volume pedal 6 is 26.26 mm.
The sustain pedal 7 is connected to the sustain terminal 1g of the main panel 1 via the mount 27. In this case, each key board 1.2.
3 are used independently, the foot volume pedal 6 is connected to each of the seven volume terminals 1 f, 2 f, and 3 d of &fitt, 2.3, and the sustain pedal 7 is connected to each of the volume terminals 1 f, 2 f, and 3 d. It is designed to be connected to the sustain terminals 1g and 2f of the .2.

Further, the circuit configurations of the boards 1, 2, and 30 for each of the above are configured as shown in FIG. That is, the circuit configuration of the main panel 1 includes a musical tone generating circuit 28, two driver sections 29.30 to which signals 28a and 28b outputted from the musical tone generating circuit 28 are respectively input, and a circuit from these driver sections 29.30. Light-emitting elements 31 and 32 such as light-emitting diodes that emit light in response to the output signals 29a and 30a; e)) light-receiving elements 33 such as transistors that receive the light of the optical signal transmitted from the sub-keyboard 2; A light receiving element 34 such as a phototransistor that receives the light of the transmitted optical signal, and a receiver FA 35.3 that receives signals 33a and 34a from each of these light receiving elements 33.34 and outputs them to the musical tone creation circuit 28.
6 and 11? to the m source output terminal 4d of the speaker 4? lM2O
and a power supply circuit 37 which is connected to the tone generating circuit 28 via a power supply circuit 37 and supplies voltage to the tone generating circuit 28. The circuit configuration of the sub-keyboard 2 includes a musical tone generating circuit 38, a driver section 39 into which a signal 38a outputted from the musical tone generating circuit 38 is input, and a light emitting unit 39 that emits light according to a signal 39a outputted from the driver tel. Light emitting element 4 such as a diode
0, a light receiving element 41 such as a phototransistor that receives the light of the optical signal transmitted from the light emitting element 31 of the main keyboard 10, and a receiver that receives the signal 41PL from the light receiving element 41 and outputs it to the musical tone creation circuit 38. section 42 and the power output terminal 4e of the speaker 4! , m23, and a power source [il circuit 3] which supplies m voltage to the musical tone generating circuit 38. Furthermore, the circuit configuration of the foot keyboard 3 includes a musical tone generating circuit 44, a driver 45 to which a signal 44a output from the musical tone generating circuit 44 is input, and a light emitting device that emits light by the signal 45a output from the driver section 45. A light emitting element 46 such as a diode, and a main keyboard 1
a light-receiving element 47 such as a phototransistor that receives the light of the optical signal transmitted from the light-emitting element 32;
a receiver unit 48 that receives a signal 47 & from the tones and outputs it to the musical tone creation circuit 44; and a power output terminal 4 of the speaker 4.
The musical tone generating circuit 44 is connected to f via an electric wire 25.
and a power supply circuit 49 for supplying layer pressure.

In this case, the light emitting element 31 and the light receiving element 33 of the main keyboard 1
The optical fiber 16 connects the light emitting element 4o of the sub keyboard 2.
and the light receiving element 41, and is also connected to the main keyboard 1.
The light emitting element 32 and the light receiving element 34 are connected to the light emitting element 46 and the light receiving element 47 of the foot keyboard 3 via the optical fiber 17. That is, the optical fiber 16 consists of two fibers 16a and 16b, one end of the fiber 16a is connected to the light emitting element 31 of the main keyboard 1, and the other end is connected to the sub keyboard 2.
is connected to the light receiving element 41 of the fiber 16b.
One end is connected to the light receiving element 33 of the main keyboard 1, and the other end is connected to the light emitting element 40 of the sub keyboard 2. The optical fiber 17 also consists of two fibers 17a and 17b, one end of which is connected to the light emitting element 32 of the main keyboard 10, and the other end connected to the light receiving element 47 of the foot keyboard 3. One end of the fiber 17b is connected to the light receiving element 34 of the main keyboard 1, and the other end is connected to the light emitting element 46 of the foot keyboard 3.

By the way, each of the light emitting elements 31, 32, 40, 46 and each of the driver sections 29, 30, 39, 45 have a structure as shown in FIG. In addition, in FIG. 3, the case where the light emitting element 31 of the main keyboard 1 and the driver (29) will be explained, and the explanation of other cases will be omitted. That is,
The driver section 29 is connected to a Nantes gate 50, and one input terminal of the Nantes gate 50 is connected to a musical tone generating circuit 28.
The data signal 28.al of the signal 28a output from the tone generating circuit 28 is input to the other input terminal, and the signal 28.al output from the musical tone generating circuit 28 is input to the other input terminal. The gate control signal 28a2 of a is input manually, and the output of the NAND game 50 is input manually to the cathode of the light emitting element 31. Further, a power source m and an indenter V are applied to the anode of the light emitting element 31 via a resistor R. When the data signal 28b and the gate control signal 28C are input to the Nant gate 50, and a "0" level signal is output from the output terminal to the light emitting element 31, the light emitting element 31
emits light, and when a "1" level signal is output from the output terminal to the light emitting element 31, the light emitting element 31 does not emit light.

Further, each of the light receiving elements 33, 34, 41, 47 and each receiver section 35, 36, 42, 48 are constructed as shown in FIG. In this case as well, the light receiving element 33 of the main keyboard and the receiver 535 will be explained.
Others are omitted. That is, the collector of the light receiving element 33 is applied with the power supply voltage 10, and the emitter of the light receiving element 33 is grounded via the resistor R2 of the receiver section 35. The receiver section 35 is composed of an amplifier, and the base of the NPN transistor 51 is connected to the light receiving element 3.
It is connected to the emitter of 3. ”2 Transistor 5
The collector of No. 1 is connected to the above-mentioned base via a resistor R3, and a power supply voltage +■ is applied via a resistor R4.
It is designed to output to 8. Further, the emitter of the transistor 51 is grounded. When the light receiving element 33 receives the optical signal transmitted via the optical fiber 16, the received light signal is input to the receiver section 35, amplified by the receiver section 35, and transmitted from the collector of the transistor 51 to the musical tone creation circuit 28. Input as a data signal.

Next, the action of the hL child organ connected as described above will be explained. For example, when setting each keyboard 1, 2, and 3 to the same tone, the tone specifying section 9 of the main keyboard l
When the desired tone is set by operating the , the tone data is input to the sub keyboard 2 and foot keyboard 3 via each optical fiber 16.17, and each keyboard 1, 2.3 is set to the same tone. .

That is, the tone generation circuit 28 of the main keyboard 1 outputs tone data signals 28a, 28b to each driver section 29,30. Of these tone data signals 28a128b,
One tone data signal 28a is data No. 16 281LI
and is input to the Nant gate 50 of the driver section 29 as the gate 10 control signal 28a2.

When the "0" level signal is output from the Nant gate 50 to the light emitting element 31, the light emitting element 31 emits light, and when the "L" level signal is output, the light emitting element 31 emits light.
10 Light emission stops. An optical signal corresponding to the light emitting state of the light emitting element 310 such as ξ is optically transferred to the light receiving element 41 of the sub keyboard 2 via the fiber 16a of the optical fiber 16. Then, the light receiving element 41 G:j The above-mentioned optical signal is received and outputted to the received light signal 41a'L/ShihaB 42, amplified by the receiver section 42, and inputted from the collector of the transistor 51 to the tone generation circuit 38 as timbre data. As a result, the tone color of Zabu Cup Board 2 is set.

On the other hand, the timbre data signal 28bG'i is inputted to the tone generating circuit 44 of the foot keyboard 3 via the driver section 30, light emitting element 32, optical fiber 17, light receiving element 47, and receiver section 48, as described above. This sets the tone of the foot keyboard 3.

Although the above-mentioned operation has been described for the case where each keyboard 1, 2, and 3 is set to the same tone color, it can be performed in exactly the same way when specifying a rhythm or an accompaniment. Also, sub keyboard 2
Data can also be optically transferred from the foot keyboard 3 to the main keyboard 1. Thus, for example, t to j: each leg #JH, 2,
When tuning 3, each i! fil, 2.
When any one of the keys 1, 2, and 3 is tuned, the tuning data is inputted to the other keyboards through the optical fibers 16 and 17, and each keyboard 1, 2, and 3 is tuned Z).

As described above, according to the connection device for the m-child organ, the main keyboard 1 and the sub keyboard 2 are connected by the optical fiber 16, and the main keyboard 1 and the foot keyboard 3 are connected by the optical fiber 17. Therefore, each keyboard has a power of 1.2.31 nJ through each optical fiber 16.17,
Data can be sent and received through optical communication, and it has excellent noise resistance, allowing data to be reliably transferred without emitting noise to the outside.

Next, a second embodiment of the present invention will be described based on FIGS. 5 to 7. In this case, the same parts as in the embodiment described above will be given the same reference numerals, and their explanation will be omitted. This second
In this embodiment, optical fibers and power lines are bundled into one cable, and each keyboard 1, 2, and 3 is connected to this cable. That is, as shown in FIG. 5, the main keyboard 1 and the main keyboard 2 are connected by a cable 6Q, and the main keyboard 1 and the foot keyboard 3 are connected by a cable 61. Also, power terminal 1 of main & i board 1
e is connected to the iu source small output terminal 4d of the speaker 4 via mmj20, but the Ht source terminal 2d of the sub-button 2 and the IT source terminal 3c of the foot keyboard 3 are connected to the m source output terminal 4θ of the speaker 4, Not connected to 4f.

Note that the other connections are the same as in the embodiment described above.

Further, the circuit configuration of each of the keyboards 1, 2, and 30 is as shown in FIG. υ1, the circuit configuration of the main panel 1 is the same as in the embodiment described above, including a musical tone creation circuit 2, two driver sections 29, 30, and light emitting elements 31, 32.
, the light receiving element 33.34, and the receiver 151s35.3
6 and r-kugen times! It is composed of 637 Toka. In this case, the l/c source circuit 37 is connected to the output terminal 4d of the speaker 4 via If and the wire 20, and supplies voltage to the musical tone generating circuit 28, and also connects the light emitting element 31 and the light receiving element 33. The first power output terminal 52a arranged between
, 62a and the second ljυ9 output terminal 52J 62b arranged between the light emitting element 32 and the light receiving element 34.
They are connected via spiders 63, 63. Further, the circuit configuration of the sub-ridge board 20 is the same as in the above-mentioned embodiment, and includes a musical tone creation circuit 38, a driver section 39, a light emitting element 40, a light receiving element 41, a resino section 42, and an m source circuit 43. The 11Σ source circuit 43 includes a light emitting element 40 and a light receiving element 4.
The manually inputted l-ho source sleep pressure is output from the m-source input terminals 64a, 64a arranged between the input terminals 65 and 65 to the musical tone generating circuit 38. Furthermore,
The circuit configuration of the foot keyboard 3 is the same as the above-described embodiment, and includes a musical tone creation circuit 44, a driver section 45, a light emitting element 46,
It consists of a light receiving element 47, a receiver section 48, and an m source circuit 49, and the m source circuit 49 includes a light emitting element 45 and a light receiving element 4.
6 and 10)) input terminals 64b and 6
4b through both lines 6G and 66, the power supply voltage m is outputted to the musical tone generating circuit 44.

Furthermore, a cable 60+i and two optical fibers 60a connect the main keyboard 1 and the sub-keyboard 2.

60b, two 4-piece 60G, and 60a. Each of the optical fibers 60a and 60b connects each light emitting element 31.40 and each light receiving element 33.41, as in the above-mentioned actual example, and connects each light emitting element 31.40 and each light receiving element 33.41.
One end of each of the Qo, 600 is connected to the m source output terminals 62a, 62a of the main GN board 1, and each of the other ends is connected to the sub! ! 1! It is connected to the m source input terminals 64a, 64a of the panel 2. Each of these optical fibers 6Qa, 60b and each! lEm60c, 60o are bundled as one cable 60 as shown in FIG. on the other hand,
The cable 61 connecting the main ridge 1 and the foot keyboard 3 is also
Similar to the cable 6o, two optical fibers 61a, 6
1b, and two precepts 61o and 61c. Each of the optical fibers 61a and 61b is connected to each light emitting element 32.
．． 46 and each light receiving element 34, 47, and one end of each of the electric wires 61Q, 61Q is connected to the power output terminals 62b, 62b of the main keyboard 1, and each other end is connected to the power output terminal 62b, 62b of the main keyboard 1. ) is connected to the IL source input pins 64b, 64b. Each of these optical fibers 61a, 61b and each TIL# 61o, 61o are also bundled into one cable 61 similarly to the cable 60 described above.

In this way, each play by the above cable 60.61! Board 1
, 2.3, the connection device has the same effect as the above-mentioned embodiment, and in particular, the connection device that connects each cable 60.6.
1 optical fibers 60a, 60b, 61a, 61b are *
? Since it does not receive noise from W60c, 60c, 61c, and 51c, there is no need to apply a noise shield any more than necessary, and each cable 60 and 61 can be manufactured easily. , and the optical fiber 60a,
60b, 61a, 61b and it line 600.60c,
61c, 61o are each one cable 60.
Since the wires are bundled into 61, the wiring becomes easy and the wires are less likely to be tangled.

In addition, each cable 60, 61 of the second embodiment is connected to each optical fiber 6Qa, '60b, 61 a, 61 b and each WI.
Although the cables 60a, 60a, 61a, and 61a are simply bundled together, the present invention is not limited to this, and the cables 70 may be connected horizontally, for example, as shown in FIG. That is, the cable 70 has a configuration in which a cylindrical gold maple thread 72 is provided around one optical fiber 71, and a covering cover 73 is provided around the gold maple thread 72, as shown in FIG. 8(A). It has become. In this case, the end of the cable 70 is a connecting portion 74. This connecting part 74 has a protruding part 75 formed with the Kinpeng gland 72 exposed at its tip.
and a tapered retainer 76 formed at its base end. The jack 77 to which the connecting portion 74 of the cable 70 is connected is constructed as shown in FIG. 8(B). That is, the jack 77 has a non-penetrating hole 78 into which the protruding portion 75 of the connecting portion 74 is inserted, and a hole 78 formed on the matcher side of the hole 78 so that the connecting portion 74 engages M (76 is removably locked). Locking t'tl'+7
9, and a contact member 80 that elastically protrudes inward from the inner wall of the hole 78 and is electrically connected to the metal of the protrusion 75 and the wire 72;
It is composed of a light emitting element 81 and a light receiving element (not shown), which are arranged on the bottom side of the hole 78 and face the optical fiber 71. Therefore, when the cable 70 pushes the protruding part 75 of the connecting part 74 into the hole 78 of the jack 77 and engages the retaining part 76 with the locking part 79 of the jack 77, the metal edge 72 becomes the contact point. The optical fiber 71 contacts the member 80 and is electrically conductive, so that the optical fiber 71 faces the light emitting element 81 and the light receiving element of the jack 770, and is thereby securely connected to the jack 77. With such a connection method, it is possible to make the connection of cables including optical fibers and +RTM compact.

Note that the present invention is not limited to the above-mentioned m-son organ, but can be widely applied to other m-son instruments such as the cypress guitar.

As explained above, according to the connection device for a secondary instrument according to the present invention, data can be transferred between a plurality of instruments, or between an instrument and a component constituting the instrument, or by spectral communication between a plurality of components. Since it is connected by an optical fiber for transfer, it has excellent noise resistance, and data can be reliably transferred without emitting noise to the outside KIS.

[Brief explanation of drawings]

1 to 4 show a first embodiment of the present invention, and a first embodiment of the invention is shown in FIG.
The figure is a connection diagram of the m-child organ and its components, Figure 2 is its circuit configuration diagram, Figure 3 is a circuit diagram of the light emitting element and driver section, Figure 4 is a circuit diagram of the light receiving element and receiver section, and Figure 4 is a circuit diagram of the light receiving element and receiver section. 5rA to FIG. 7 show the second embodiment;
is a diagram of the connections of the m-child organ and its four components;
Figure 6 is a circuit diagram of the circuit, Figure 7 is a schematic diagram of the cable, and Figure 8 shows other cables and their connecting fittings.
, FIG. 8(A) is a partially cutaway front view of the cable and its connecting portion, and FIG. 8(B) is a front view of the jack. 1...Main 11 keyboards, 2...Sub keyboard, 3...Pedal keyboard, 16.17.6Qa, 6Q
b, 6ia, 61b571...Optical fiber, 20.23.251・ku...6Q c, 61 c
++'-"WIIIL 3', 32.40.46・
...Light emitting element, 33.34.41.47...
··Light receiving element. Patent Applicant Casio Kei R, Representative Patent Attorney Yama 1) Hako, ゛ ,',”,<;,
-No.: (Fig.

Claims (1)

[Scope of Claims] (l) Data 11t is provided by connecting a large number of musical instruments, or between an instrument and a component that constitutes a musical instrument, or between multiple components of a musical instrument, using optical fibers.
A connecting device for an electronic musical instrument, characterized in that the electronic musical instrument is configured to transmit data. (2) For musical instruments with the above number of θ], or for a musical instrument and the above component to be connected, or for each component of a plurality of songs to be connected by a line. A connection device for an electronic musical instrument according to claim 1.