CN214540751U

CN214540751U - Device and musical instrument for connecting USB MIDI interface and MIDI DIN interface

Info

Publication number: CN214540751U
Application number: CN202120873763.2U
Authority: CN
Inventors: 李桦标; 谢豪
Original assignee: Huashi Shenzhen Technology Co ltd
Current assignee: Huashi Shenzhen Technology Co ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-10-29
Anticipated expiration: 2031-04-26

Abstract

The utility model provides a connect device and musical instrument of USB MIDI interface and MIDI DIN interface, connect device of USB MIDI interface and MIDI DIN interface, including MIDI interface module: the system is connected with the MIDI musical instrument equipment and performs data interaction with the MIDI musical instrument equipment; the USB interface module: the device with the USB interface is connected with the device with the USB interface, and performs data interaction with the device with the USB interface; the main control module: the MIDI interface module and the USB interface module are used for processing data transmitted by the MIDI interface module and the USB interface module so that the MIDI musical instrument equipment and the equipment with the USB interface can interact with data. Compared with the prior art, the utility model discloses still have the USB host computer interface when connecting the equipment of MIDI interface, can connect the USB interface simultaneously from the electromechanical device.

Description

Device and musical instrument for connecting USB MIDI interface and MIDI DIN interface

Technical Field

The utility model relates to an electronic musical instrument, especially a device and musical instrument of connecting USB MIDI interface and MIDI DIN interface.

Background

1) The MIDI interface mainly includes MIDI five-pin interface and USB MIDI interface. At present, because the USB MIDI interface can be small in size and can be directly connected with a computer, a MIDI five-pin interface is cancelled on part of musical instruments, and only the USB MIDI interface is used. This results in many instruments because the USB MIDI interface and MIDI pin interface are not able to communicate with each other.

2) The prior device for converting MIDI to USB slave machine interface can convert musical instruments with MIDI interface into USB slave machine interface, thereby being capable of connecting devices with USB host machine interface such as computer; however, the USB slave interface can not be directly connected with the musical instrument with the USB slave interface.

Therefore, how to design a device and a musical instrument capable of connecting a MIDI musical instrument device and a device with a USB interface for connecting a USB MIDI interface and a MIDI DIN interface at the same time is a technical problem to be solved in the industry.

SUMMERY OF THE UTILITY MODEL

To the technical problem that connecting device can not connect the musical instrument that has USB from the computer interface among the prior art, the utility model provides a connect device and musical instrument of USB MIDI interface and MIDI DIN interface.

The technical scheme of the utility model for, a device of connecting USB MIDI interface and MIDI DIN interface is proposed, include

MIDI interface module: the system is connected with the MIDI musical instrument equipment and performs data interaction with the MIDI musical instrument equipment;

the USB interface module: the device with the USB interface is connected with the device with the USB interface, and performs data interaction with the device with the USB interface;

the main control module: the MIDI interface module and the USB interface module are used for processing data transmitted by the MIDI interface module and the USB interface module so that the MIDI musical instrument equipment and the equipment with the USB interface can interact with data.

Further, the MIDI interface module comprises:

MIDI receiving interface: for receiving data transmitted by the MIDI musical instrument apparatus;

MIDI transmission interface: the data processing module is used for sending the data processed by the main control module.

Furthermore, the system also comprises a MIDI processing module which is connected with the MIDI interface module and the main control module, and the MIDI interface module and the main control module are communicated through the MIDI processing module.

Further, the USB interface module includes a USB host interface for connecting to a USB interface slave device.

Further, the USB host interface adopts a USB2.0 interface.

The power supply processing module supplies power through the outside and converts the external input voltage into the working voltage of each module.

Further, the power supply processing module comprises a voltage reduction chip connected with the power supply input, and the voltage reduction chip reduces the voltage of the power supply input to the working voltage.

Further, the blood pressure reduction chip adopts an LM1117 blood pressure reduction chip.

Furthermore, the power supply processing module also comprises at least one tantalum capacitor connected to the output end of the voltage reduction chip.

The utility model also provides a musical instrument, the musical instrument adopts the above-mentioned device of connecting USB MIDI interface and MIDI DIN interface to connect.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

the MIDI interface module and the USB interface module are arranged in the MIDI system, MIDI musical instrument equipment and equipment with a USB interface can be connected at the same time, wherein the USB interface module is a USB host interface and can be connected with USB interface slave equipment, and data of the MIDI musical instrument equipment is transmitted to the USB interface slave equipment through the main control module.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

FIG. 1 is a schematic block diagram of an apparatus for connecting a USB MIDI interface and a MIDI DIN interface according to the present invention;

fig. 2 is a schematic circuit diagram of the power supply processing module of the present invention.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Thus, a feature indicated in this specification will serve to explain one of the features of an embodiment of the invention, and not to imply that every embodiment of the invention must have the described feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and examples.

The present invention relates to a device for converting MIDI to USB slave interface, which can convert a musical instrument with MIDI interface into USB slave interface, so as to connect devices with USB host interface, such as computers, but for USB slave device with USB interface, it cannot connect with USB slave interface through USB slave interface.

Specifically, the utility model provides a take device of USB MIDI interface and MIDI DIN interface, include:

MIDI interface module: the system is connected with the MIDI musical instrument equipment and carries out data interaction with the MIDI musical instrument equipment;

the USB interface module: the device is connected with a device with a USB interface and performs data interaction with the device with the USB interface;

the main control module: it is used to process the data transmitted by MIDI interface module and USB interface module, to make MIDI musical instrument device interact with the device data with USB interface.

Specifically, referring to fig. 1, the MIDI interface module includes a MIDI receiving interface and a MIDI transmitting interface, both interfaces are used for externally connecting MIDI instruments, wherein the MIDI interface module is used for receiving data sent by the MIDI instruments, the MIDI transmitting interface is used for sending data to the MIDI instruments, a MIDI processing module is further connected between the MIDI interface module and the main control module, the MIDI processing module is used for processing MIDI data received from the MIDI receiving interface and communicating with the main control module after processing, and meanwhile, the MIDI processing module can also receive MIDI data sent by the main control module, send the processed MIDI data to the MIDI transmitting interface, and send the MIDI data to the MIDI instruments through the MIDI transmitting interface, thereby implementing communication between the MIDI processing module and the MIDI instruments. Besides, the MIDI processing module also has the function of isolation, so that the device and external MIDI musical instrument equipment can be isolated and protected.

The USB interface module comprises a USB host interface which can be connected with the USB interface slave device, thereby realizing the communication between the MIDI musical instrument device and the USB interface slave device.

The utility model discloses the during operation only need be connected MIDI interface module and MIDI musical instrument equipment, then is connected USB interface module and USB interface from the electromechanical device, can realize MIDI musical instrument equipment and USB interface from the data interaction between the electromechanical device, has realized the function that the MIDI interface changes the USB host computer interface.

Specifically, when the MIDI transmission interface is connected to the USB host, the USB interface slave device can transmit data to the MIDI music instrument device through the USB host interface, the USB interface slave device transmits the data to the main control module through the USB host interface, and then transmits the data to the MIDI processing module through the main control module, and the MIDI processing module can process the data from the main control module and transmit the data to the MIDI music instrument device through the MIDI transmission interface, thereby realizing data transmission from the USB interface slave device to the MIDI music instrument device.

When the MIDI receiving interface is connected with the USB host machine interface, the data transmission from the MIDI musical instrument equipment to the USB interface slave machine equipment can be realized, the data in the MIDI musical instrument equipment is transmitted to the MIDI processing module through the MIDI receiving interface, the MIDI processing module processes the received data and then transmits the processed data to the main control module, and the main control module is connected with the USB host machine interface and can transmit the processed data to the USB interface slave machine equipment through the USB host machine interface, so that the data transmission from the MIDI musical instrument equipment to the USB interface slave machine equipment is realized.

And simultaneously, the utility model discloses a USB concentrator can also be connected to the USB host computer interface, and the USB concentrator is a device that is used for expanding a USB interface into a plurality of USB interfaces, and it has a USB from machine interface and a plurality of USB host computer interface generally, through USB from machine interface with the utility model discloses a USB host computer interface connection, then be connected a plurality of USB host computer interfaces and a plurality of USB interface from the machine equipment, through connecting the USB concentrator, the utility model discloses can realize MIDI musical instrument equipment and a plurality of USB interface from the expansion connection of machine equipment simultaneously.

Specifically, the method includes two operation modes, in the first operation mode, the MIDI instrument device performs data transmission to the plurality of USB interface slave devices, and in the second operation mode, the plurality of USB interface slave devices performs data transmission to the MIDI instrument device. In operation, earlier with USB of USB concentrator from the machine interface with the utility model discloses a USB host computer interface connection, then be connected to a plurality of USB interface slave machine equipment respectively with a plurality of USB host computer interfaces of USB concentrator, be connected MIDI interface module and MIDI musical instrument equipment at last, wherein, when MIDI musical instrument equipment and MIDI send interface connection, it is used for realizing a plurality of USB interface slave machine equipment to the data transmission of MIDI musical instrument equipment, otherwise when MIDI musical instrument equipment and MIDI receive interface connection, it is used for realizing the data transmission of MIDI musical instrument equipment to a plurality of USB interface slave machine equipment.

Wherein, the utility model discloses well USB host computer interface adopts the USB2.0 interface, and its propagation speed can reach 480Mbps generally, and its propagation speed is about 40 times of USB1.1, has higher practicality.

The utility model discloses the operating voltage of each module of during operation is about 3.3V, and it supplies power through power processing module, but power processing module gets the electricity from the outside, and its supply voltage generally is 5V, does not match with the operating voltage of each module, need reduce supply voltage to operating voltage and use, so the utility model discloses well power processing module still is used for converting the input voltage of outside into the operating voltage of each module.

Referring to fig. 2, specifically, the power processing module includes a buck chip U3 connected to the power input, the buck chip U3 is capable of converting the voltage of the power input into the operating voltage of each module, wherein the buck chip U3 employs an LM1117 buck chip.

Specifically, the LM1117 buck chip and the national semiconductor industry standard device LM317 have the same pin arrangement, have the version of adjustable voltage, can realize 1.25-13.8V output voltage range through two external resistors, and have 5 fixed voltage output (1.8V, 2.5V, 2.85V, 3.3V and 5V) models in addition. The utility model discloses in can adopt the LM1117 step-down chip that fixed voltage output is the 3.3V model, its and the operating voltage phase-match of each module, can provide stable operating voltage for each module, in some other embodiments, when the operating voltage of each module is 1.8V, also can adopt the LM1117 step-down chip that fixed voltage output is the 1.8V model.

LM1117 offers current limitation and thermal protection, the circuit includes a zener regulated bandgap reference voltage TO guarantee the precision of the output voltage within 1%, it has LLP, TO263, SOT223, TO220 and TO 252D-PAK packages, its output has at least one tantalum capacitor connected, it is used for improving transient response and stability of LM1117, wherein, the magnitude of the tantalum capacitor is not smaller than 10 uF.

Compared with the prior art, the utility model discloses possess the function that MIDI interface changes USB host computer interface, enable MIDI musical instrument equipment and USB interface from the intercommunication of electromechanical device. And simultaneously the utility model discloses a USB concentrator can also be connected to USB host computer interface, can expand to connect a plurality of USB interfaces from the electromechanical device.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An apparatus for connecting a USB MIDI interface and a MIDI DIN interface, comprising

2. The apparatus for connecting a USB MIDI interface and a MIDI DIN interface according to claim 1, wherein the MIDI interface module comprises:

3. The apparatus as claimed in claim 2, further comprising a MIDI processing module for connecting the MIDI interface module and the main control module, wherein the MIDI interface module and the main control module communicate via the MIDI processing module.

4. Apparatus for connecting a USB MIDI interface and a MIDI DIN interface as claimed in claim 1, wherein the USB interface module comprises a USB host interface for connecting a USB interface slave device.

5. The apparatus for connecting a USB MIDI interface and a MIDI DIN interface as recited in claim 4, wherein the USB host interface employs a USB2.0 interface.

6. The apparatus of claim 1, further comprising a power processing module, wherein the power processing module is powered externally and converts an external input voltage into an operating voltage of each module.

7. The apparatus of claim 6, wherein the power processing module comprises a buck chip connected to the power input, the buck chip reducing the voltage of the power input to the operating voltage.

8. The apparatus of claim 7, wherein the voltage-reducing chip is an LM1117 voltage-reducing chip.

9. The apparatus of claim 7, wherein the power processing module further comprises at least one tantalum capacitor connected to the output of the voltage-reducing chip.

10. Musical instrument, characterized in that it is connected using a device for connecting a USB MIDI interface and a MIDI DIN interface as claimed in any one of claims 1 to 9.