CN201812253U

CN201812253U - Keyboard/mouse device capable of switching PS/2 (Personal System/2) to USB (Universal Serial Bus)

Info

Publication number: CN201812253U
Application number: CN2010205623769U
Authority: CN
Inventors: 吴之光; 金长新; 梁智豪
Original assignee: Langchao Electronic Information Industry Co Ltd
Current assignee: Inspur Electronic Information Industry Co Ltd
Priority date: 2010-10-15
Filing date: 2010-10-15
Publication date: 2011-04-27
Anticipated expiration: 2020-10-15

Abstract

The utility model provides a keyboard/mouse device capable of switching PS/2 (Personal System/2) to USB (Universal Serial Bus), belonging to the field of computers. The keyboard/mouse device capable of switching PS/2 to USB comprises a USB protocol output end, a mouse PS/2 input end, a keyboard PS/2 input end, a GPIO (General Purpose Input Output) device and a CPU (Central Processing Unit), wherein the GPIO device comprises an input GPIO device and an output GPIO device, the USB protocol output end, the mouse PS/2 input end and the keyboard PS/2 input end are connected with and arranged together with the CPU, and the GPIO device is arranged at the other end of the CPU. Compared with the prior art, the utility model integrates a keyboard and a mouse into USB protocol equipment, can realize the programmable design of the keyboard and the mouse and can realize the function of controlling peripheral circuits of a computer or a server through keys besides the basic input and output of the keyboard and the mouse so as to realize the key extending function on a standard keyboard.

Description

A kind of PS/2 changes the device of USB keyboard and mouse

Technical field

The utility model relates to field of computer technology, and specifically a kind of PS/2 changes the device of USB keyboard and mouse.

Background technology

The development that computer technology is maked rapid progress, its peripheral hardware more and more tends to unified Data Transport Protocol one USB (Universal Serial Bus) agreement direction to be developed, usb communication is supported hot plug with it, plug and play, transmission speed is fast, but connection device waits technological merit to become computer external interface comparatively general communication protocol at present more simultaneously, because USB interface becomes the main flow of main frame Peripheral Interface, a lot of computer vendors have been cancelled the serial ports of using always on the main frame, the parallel port, Peripheral Interface forms such as PS/2 mouth, what replace is exactly USB interface, but there are a lot of computer peripheral equipment renewal speed slow, it also not USB interface, in order to prevent particularly expensive too early being eliminated of non-USB mouth peripheral hardware, reduce the wasting of resources, the converting interface technology is arisen at the historic moment.

Summary of the invention

The utility model is at above-mentioned the deficiencies in the prior art, provides a kind of PS/2 to change the device of USB keyboard and mouse.

The device that a kind of PS/2 of the present utility model changes the USB keyboard and mouse is realized in the following manner, structure comprises usb protocol output terminal, mouse PS/2 input end, keyboard PS/2 input end, GPIO device and CPU, wherein the GPIO device comprises input GPIO and output GPIO, usb protocol output terminal, mouse PS/2 input end and keyboard PS/2 input end are connected with CPU and are set together, and the GPIO device is arranged on the other end of CPU.

The utility model is compared with prior art, has following outstanding beneficial effect:

Keyboard, mouse are integrated into a usb protocol equipment, and " able to programme " that can realize keyboard, mouse designed, except basic keyboard, mouse input and output, also can realize the function of the peripheral circuit of button control computer or server, thereby can on QWERTY keyboard, realize the keypress function expanded function.

Description of drawings

Fig. 1 is the structural representation that a kind of PS/2 changes the device of USB keyboard and mouse;

Fig. 2 is the program technic structural representation that a kind of PS/2 changes the device of USB keyboard and mouse.

Description of reference numerals: 1., the usb protocol output terminal, 2., mouse PS/2 input end, 3., keyboard PS/2 input end, 4., CPU, 5., the GPIO device.

Embodiment

With reference to explaining below the device work of Figure of description to a kind of PS/2 commentaries on classics USB keyboard and mouse of the present utility model.

As shown in Figure 1, the structure that a kind of PS/2 of the present utility model changes the device of USB keyboard and mouse comprise the usb protocol output terminal 1., mouse PS/2 input end 2., keyboard PS/2 input end 3., 4. 5. the GPIO device reach CPU, wherein 5. the GPIO device comprises input GPIO and output GPIO, the usb protocol output terminal 1., 2. mouse PS/2 input end reach keyboard PS/2 input end and 3. 4. be connected with CPU and be set together, and 5. the GPIO device is arranged on the CPU other end 4..

The program technic of the device of a kind of PS/2 commentaries on classics USB keyboard and mouse of the present utility model is as described below:

Keyboard PS/2 input end 3., 2. mouse PS/2 input end can plug use simultaneously, the agreement of two kinds of peripheral hardwares that inner USB enumeration process is integrated, control chip receives, mouse PS/2 input end 2., the 3. laggard row decoding of signal of keyboard PS/2 input end, change in the usb protocol and export to main frame by the USB mouth after the corresponding value, and mouse PS/2 input end 2., 3. keyboard PS/2 input end have signal when input can not form between mutually on the USB keyboard, mouse performance of interference and separate type to be consistent simultaneously.

Mouse PS/2 input end 2., 3. keyboard PS/2 input end insert the corresponding interface, 5. special function keys connects input GPIO device, at last USB plug is inserted into main frame USB groove, the wait main frame is discerned this peripheral hardware, after identification is finished, mouse PS/2 input end 2., 3. keyboard PS/2 input end can use, and realized the hot plug function of PS/2 mouth.

Input GPIO may be defined to undefined special function keys on the keyboard, at the corresponding key assignments of USB end output, as the combinations of definitions key, such as, be defined as the key assignments of Ctrl+C, when pressing self-defining key corresponding input GPIO terminal level is changed, the order of USB port exportable " duplicating " is to main frame; May be defined as the control mouth of the keyboard that is of little use, to control other peripheral hardwares.Such as, the switching on and shutting down of printer on available this main frame of Esc key control when pressing three Esc within a certain period of time continuously, are exported GPIO mouth level accordingly and are changed the realization digital control function.

Except that the described technical characterictic of instructions, be the known technology of those skilled in the art.

Claims

1. a PS/2 changes the device of USB keyboard and mouse, it is characterized in that structure comprises usb protocol output terminal, mouse PS/2 input end, keyboard PS/2 input end, GPIO device and CPU, wherein the GPIO device comprises input GPIO and output GPIO, usb protocol output terminal, mouse PS/2 input end and keyboard PS/2 input end are connected with CPU and are set together, and the GPIO device is arranged on the other end of CPU.