CN2479573Y - Keyboard - Google Patents

Abstract

The utility model discloses a keyboard and comprises a keyboard body and a control circuit which is arranged inside the keyboard body. The utility model is characterized in that the surface of the keyboard body is provided with a piano keyboard control area and a panel control area, an interface which is arranged on the keyboard body can be connected with a peripheral port of a computer, and the signals coming from the piano keyboard are processed by the control circuit to become keyboard make-break signals and output from the interface. The utility model can be used as a MIDI input equipment without the requirement of a single MIDI port, and the computer is directly connected through the peripheral interfaces of the computer, such as a keyboard port. The utility model is convenient in use, simple in operation, and quite low in cost. The cost of the utility model is nearly five times to ten times as cheap as that of the MIDI keyboard, and is used in an extensive range.

Description

Keyboard

The utility model relates to keyboard, especially a kind of can be as the computer keyboard of MIDI input equipment.

At present, the MIDI input equipment mostly is the MIDI keyboard greatly, the MIDI keyboard carries out communication by the MIDI OUT mouth of standard and other MIDI equipment, music information that can expressed in abundance, the MIDI keyboard is as a smart machines, transmit the happy symbol of many complexity in accordance with midi standard, time, musical instrument and various control information, thereby make its building block must adopt intelligent element, as its critical component-MIDI module itself is exactly the microcomputer of a solidification software, this just causes the cost height of MIDI keyboard, the cost height, influenced popularizing of MIDI system, made many computer amateurs really contact computer music for no reason at all with the music-lover.Though prior art attempts the common computer keyboard is used as the MIDI input equipment, because the relations such as key position of computer keyboard, operate very inconveniently, control also very loaded down with trivial details.

The purpose of this utility model promptly provides a kind of can the use and keyboard with low cost as the MIDI input equipment with happy symbol input function.

For realizing this purpose, the technical solution of the utility model is as follows: a kind of keyboard, comprise keyboard body and inner control circuit thereof, it is characterized in that: the keyboard surface is provided with key and panel control zone, the keyboard body is provided with the interface that can link to each other with the computer peripheral equipment mouth, and control circuit will be that the keyboard make-and-break signal is exported from interface from the signal Processing of key.Have on the described panel control zone and the corresponding key pilot lamp of position of piano key.Described panel control zone is provided with channel selector switch.Also be provided with keyboard conversion mouth on the keyboard body.

After adopting technique scheme, the utlity model has the most frequently used, the most important function of MIDI keyboard--happy symbol input function, thereby can use as the MIDI input equipment, and MIDI mouth that must be not independent, Peripheral Interface such as the keyboard mouth of crossing computer with the computer expert directly link to each other, easy to use, simple to operate; The utility model has been owing to simplified the function of MIDI keyboard complexity in addition, thereby cost is very low, about general MIDI keyboard 1/10 to 1/5 between, reduced the threshold that people have a complete MIDI system, its usable range is extensive.

Below in conjunction with drawings and Examples the utility model is described in detail.

Fig. 1 is an embodiment front panel figure of the present utility model.

Fig. 2 is an embodiment back panel figure of the present utility model.

Fig. 3 is the circuit theory diagrams of an embodiment of the present utility model.

As Fig. 1, Fig. 2, shown in Figure 3, the utility model comprises keyboard body and inner control circuit thereof, the keyboard surface is provided with key 1 and panel control zone 6, and the keyboard body is provided with the interface 2 that can link to each other with the computer peripheral equipment mouth, and interface 2 can be keyboard mouth or USB mouth or parallel port or serial port etc.Control circuit is similar to the control circuit hardware of common keyboard, comprise a microprocessor MPU, on the data bus of microprocessor MPU, be connected to a read only memory ROM and a random access memory ram, on the PXI of microprocessor MPU mouth, be connected to a matrix generator that leads to each key 1 in the keyboard body, asynchronous communication mouth at microprocessor MPU is connected to interface 2, control circuit will be that the keyboard make-and-break signal is from interface 2 outputs from the signal Processing of key 1 like this, panel control zone 6 is provided with switch 7 etc., and whether switch 7 decisions keyboard of the present utility model works.Also be provided with key pilot lamp 3 and channel selector switch 4 in an embodiment on the panel control zone 6, key pilot lamp 3 and channel selector switch 4 are all controlled by control circuit, key pilot lamp 3 is corresponding with the position of key 1, (during button) corresponding key pilot lamp is bright during performance, the happy symbol information that to be correlated with when computer is input to control circuit by interface 2, then key pilot lamp 3 is bright under the control circuit effect, and the user can press key according to the bright information of lamp, with the study musical sound; Channel selector switch 4 can be selected the sound of musical instruments of needs, is 16 by midi standard.

When interface 2 is the keyboard mouth, also can be provided with keyboard converting interface 5 on the keyboard body of the present utility model, keyboard converting interface 5 also is connected on the asynchronous communication mouth of microprocessor MPU in the control circuit.Be inserted in the utility model on the keyboard mouth of computer by interface 2 during use, former computor-keyboard then can be connected with the utility model by keyboard converting interface 5, such two kinds of dissimilar keyboards, a shared computor-keyboard mouth, both saved resource, do not influence use separately again, the keyboard signal that computor-keyboard produced intactly is sent to the computor-keyboard mouth by the utility model, and the signal that the utility model produces is mixed in the above-mentioned computor-keyboard signal by coding, also be sent in the computor-keyboard mouth, the computer expert crosses the subsidiary specific drivers of the utility model with signal decoding, isolate computor-keyboard information and keypad information of the present utility model, and directly send computor-keyboard information to computer system, import computer system again into and convert keypad information of the present utility model to general MIDI message in computer inside by software.Circuit theory in such cases as shown in Figure 3.

Claims (4)

1, a kind of keyboard, comprise keyboard body and inner control circuit thereof, it is characterized in that: the keyboard surface is provided with key 1 and panel control zone 6, the keyboard body is provided with the interface 2 that can link to each other with the computer peripheral equipment mouth, and control circuit will be that the keyboard make-and-break signal is from interface 2 outputs from the signal Processing of key 1.

2, keyboard according to claim 1 is characterized in that: have on the described panel control zone 6 and the corresponding key pilot lamp 3 in key 1 position.

3, keyboard according to claim 1 is characterized in that: described panel control zone 6 is provided with channel selector switch 4.

4, keyboard according to claim 1 is characterized in that: also be provided with keyboard conversion mouth 5 on the keyboard body.

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