CN104503595A - PS/2 keyboard-mouse switching device - Google Patents
PS/2 keyboard-mouse switching device Download PDFInfo
- Publication number
- CN104503595A CN104503595A CN201410783252.6A CN201410783252A CN104503595A CN 104503595 A CN104503595 A CN 104503595A CN 201410783252 A CN201410783252 A CN 201410783252A CN 104503595 A CN104503595 A CN 104503595A
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- Prior art keywords
- keyboard
- mouse
- outside
- signal
- main control
- Prior art date
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
- G06F3/021—Arrangements integrating additional peripherals in a keyboard, e.g. card or barcode reader, optical scanner
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03541—Mouse/trackball convertible devices, in which the same ball is used to track the 2D relative movement
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
Abstract
The invention relates to the field of computers, discloses a PS/2 keyboard-mouse switching device and solves the problems of resource waste, high cost and limited space caused by the fact that a keyboard and a mouse need to be arranged for each computer in existing occasions with multiple computers or servers. The PS/2 keyboard-mouse switching device is composed of an external PS/2 keyboard input interface, an external PS/2 mouse input interface, a PS/2 keyboard signal receiving and processing unit, a PS/2 mouse signal receiving and processing unit, a switching control switch, an output passage indicating unit, two 5V power source semiconductor switches and multiple RS232 signal output interfaces. The PS/2 keyboard-mouse switching device can convert PS/2 signals of an external keyboard and an external mouse into RS232 signals, so that transmission distance is prolonged to some extent; the PS/2 keyboard-mouse switching device is matched with multiple PS/2 keyboard and mouse simulators at the near ends of the computers for use, so that effect that the computers share the external PS/2 keyboard and the external PS/2 mouse is realized; working of the computers cannot be affected when the external PS/2 keyboard and the external PS/2 mouse are disconnected at any time and on any occasion, so that resource utilization rate is increased, and the PS/2 keyboard-mouse switching device is low in cost and easy in realization.
Description
Technical field
The present invention relates to field of computer technology, be specifically related to a kind of PS/2 keyboard and mouse switching device shifter.
Background technology
RS232 interface as one of communication interface on personal computer, be Electronic Industries Association formulate asynchronous transmission standard interface, have transmission line few, be easy to the features such as wiring.Pass through the improvement of RS232 interface and the communication technology at present, RS232 communication distance increases greatly.
With the progressively development of computer application field and being on the increase of network application, the quantity of a lot of application scenarios Computer and server also constantly increases, and the operation to every platform computing machine is related to the management of computing machine, especially for the management of BIOS rank, if now every platform computing machine is equipped with a set of keyboard, mouse, not only waste resource and improve cost, be difficult to realize simultaneously in the application of restriction of having living space.
Summary of the invention
Existingly relate to that every platform computing machine in the occasion of multiple computing machine or server all needs to be equipped with a set of keyboard, mouse exists waste resource, cost are high, the problem of limited space to solve, the invention provides one and outside PS/2 keyboard signal and outside PS/2 mouse signal can be converted to respectively RS232 keyboard signal and the output of RS232 mouse signal, multiple " the PS/2 keyboard and mouse simulator " of coupled computer near-end can use simultaneously, realize the PS/2 keyboard and mouse switching device shifter of a set of outside PS/2 keyboard of multiple stage computer utility and outside PS/2 mouse.
The technical scheme that the present invention adopts for technical solution problem is as follows:
A kind of PS/2 keyboard and mouse switching device shifter of the present invention, comprising:
The PS/2 keyboard signal be made up of the first main control chip and RS232 keyboard signal output channel gating chip receives and processing unit, the outside PS/2 input through keyboard interface be connected with the first main control chip, the 5V power source semiconductor switch be connected with outside PS/2 input through keyboard interface with the first main control chip respectively, the PS/2 mouse signal be made up of the second main control chip and RS232 mouse signal output channel gating chip receives and processing unit, the outside PS/2 mouse input interface be connected with the second main control chip, another 5V power source semiconductor switch be connected with outside PS/2 mouse input interface with the second main control chip respectively, the switching gauge tap be connected with the second main control chip with the first main control chip respectively, the output channel indicating member be connected with switching gauge tap, multiple RS232 signal output interface, each RS232 signal output interface is all connected with RS232 mouse signal output channel gating chip with RS232 keyboard signal output channel gating chip,
Outside PS/2 keyboard is by outside PS/2 input through keyboard interface connecting system, after described first main control chip initialization, time delay 590ms powers to outside PS/2 keyboard by control 5V power source semiconductor switch, analog computer discharges clock line and the data line of outside PS/2 keyboard, read self-inspection that outside PS/2 keyboard uploads by instruction and device id, complete the Initialize installation of outside PS/2 keyboard and send the enable outside PS/2 keyboard of the corresponding command, making it enter normal duty, after trigger external PS/2 keyboard, first main control chip reads PS/2 keyboard signal that outside PS/2 keyboard uploads and stores, circular test switches the state of gauge tap and judges toggle bit simultaneously, carry out strobe state instruction by output channel indicating member by the corresponding RS232 signal output interface of RS232 keyboard signal output channel gating CE simultaneously, the PS/2 keyboard signal received judges by the first main control chip, if be judged as effective PS/2 keyboard signal, it is encoded, be converted to RS232 keyboard signal after adding communication check byte and data statistics byte and be sent to this RS232 signal output interface, if be judged as invalid PS/2 keyboard signal, re-power to outside PS/2 keyboard by control 5V power source semiconductor switch, repeat said process until export effective PS/2 keyboard signal,
Outside PS/2 mouse is by outside PS/2 mouse input interface connecting system, after described second main control chip initialization, time delay 590ms powers to outside PS/2 mouse by control 5V power source semiconductor switch, analog computer discharges clock line and the data line of outside PS/2 mouse, read self-inspection that outside PS/2 mouse uploads by instruction and device id, complete the Initialize installation of outside PS/2 mouse and send the enable outside PS/2 mouse of the corresponding command, making it enter normal duty, after trigger external PS/2 mouse, second main control chip reads PS/2 mouse signal that outside PS/2 mouse uploads and stores, circular test switches the state of gauge tap and judges toggle bit simultaneously, carry out strobe state instruction by output channel indicating member by the corresponding RS232 signal output interface of RS232 mouse signal output channel gating CE simultaneously, the PS/2 mouse signal received judges by the second main control chip, if be judged as effective PS/2 mouse signal, it is encoded, be converted to RS232 mouse signal after adding communication check byte and data statistics byte and be sent to this RS232 signal output interface, if be judged as invalid PS/2 mouse signal, re-power to outside PS/2 mouse by control 5V power source semiconductor switch, repeat said process until export effective PS/2 mouse signal.
Described output channel indicating member is made up of multiple LED light, and multiple LED light is all connected with switching gauge tap, each LED light correspondence instruction RS232 signal output interface.
Described first main control chip and the second main control chip all adopt microcontroller chip.
Described RS232 keyboard signal output channel gating chip and RS232 mouse signal output channel gating chip all adopt 5V bus switch chip.
The invention has the beneficial effects as follows: the PS/2 signal of external keyboard and external mouse can be converted to the output of RS232 signal by PS/2 keyboard and mouse switching device shifter of the present invention, while realizing keyboard, mouse switching, output signal is made to be converted to RS232 signal, be convenient to wiring and receive, and can extend transmission distance to a certain extent.Multiple " the PS/2 keyboard and mouse simulator " of PS/2 keyboard and mouse switching device shifter coupled computer near-end of the present invention uses, realize a set of outside PS/2 keyboard of multiple stage computer utility and outside PS/2 mouse, whenever and the outside PS/2 keyboard of any occasion and outside PS/2 mouse disconnect and all can not affect computer operation, not only increase resource utilization, reduce cost, and simple to operation in the application scenario of restriction of having living space, easily realize.PS/2 keyboard and mouse switching device shifter of the present invention be applicable to keyboard, mouse need from computing machine relatively away from particular application.
Accompanying drawing explanation
Fig. 1 is the composition structured flowchart of a kind of PS/2 keyboard and mouse switching device shifter of the present invention.
Fig. 2 is the software flow schematic diagram of a kind of PS/2 keyboard and mouse switching device shifter of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, a kind of PS/2 keyboard and mouse switching device shifter of the present invention, by outside PS/2 input through keyboard interface, outside PS/2 mouse input interface, PS/2 keyboard signal receive to receive with processing unit, PS/2 mouse signal and processing unit, switch gauge tap, output channel indicating member, two 5V power source semiconductor switches, multiple RS232 signal output interfaces form.
PS/2 keyboard signal receives and comprises the first main control chip and RS232 keyboard signal output channel gating chip with processing unit, and PS/2 mouse signal receives and comprises the second main control chip and RS232 mouse signal output channel gating chip with processing unit; Output channel indicating member comprises multiple LED light, and the number of LED light is determined according to the number of RS232 signal output interface, each LED light correspondence instruction RS232 signal output interface.
Outside PS/2 keyboard is connected with outside PS/2 input through keyboard interface, and outside PS/2 input through keyboard interface receives with PS/2 keyboard signal and is connected with the first main control chip in processing unit, and the first main control chip is connected with RS232 keyboard signal output channel gating chip; Outside PS/2 mouse is connected with outside PS/2 mouse input interface, and outside PS/2 mouse input interface receives with PS/2 mouse signal and is connected with the second main control chip in processing unit, and the second main control chip is connected with RS232 mouse signal output channel gating chip; Each RS232 signal output interface is all connected with RS232 mouse signal output channel gating chip with RS232 keyboard signal output channel gating chip.
One in two 5V power source semiconductor switches receives with PS/2 keyboard signal with outside PS/2 input through keyboard interface respectively and is connected with the first main control chip in processing unit, and another in two 5V power source semiconductor switches receives with PS/2 mouse signal with outside PS/2 mouse input interface respectively and be connected with the second main control chip in processing unit.
Switch gauge tap to receive with PS/2 keyboard signal respectively to receive with the first main control chip in processing unit, PS/2 mouse signal and be connected with the second main control chip in processing unit.
Multiple LED light in output channel indicating member are all connected with switching gauge tap.
In present embodiment, the reception of PS/2 keyboard signal and the first main control chip in processing unit, PS/2 mouse signal receive and all adopt microcontroller (MCU) chip with the second main control chip in processing unit.
In present embodiment, the reception of PS/2 keyboard signal and the RS232 keyboard signal output channel gating chip in processing unit, PS/2 mouse signal receive and all adopt 5V bus switch chip with the RS232 mouse signal output channel gating chip in processing unit.
As shown in Figure 2, after powering on, PS/2 keyboard signal receive with the first main control chip initialization in processing unit after time delay 590ms powered to outside PS/2 keyboard by control 5V power source semiconductor switch, first main control chip analog computer carries out initialization and enable operation by outside PS/2 input through keyboard interface to outside PS/2 keyboard, discharge clock line and the data line of outside PS/2 keyboard, read self-inspection that outside PS/2 keyboard uploads by instruction and device id simultaneously, complete the Initialize installation of outside PS/2 keyboard and send the enable outside PS/2 keyboard of the corresponding command, it is made to enter normal duty, after trigger external PS/2 keyboard, first main control chip reads PS/2 keyboard signal that outside PS/2 keyboard uploads and stores, circular test switches the state of gauge tap and judges toggle bit simultaneously, light LED light corresponding to this RS232 signal output interface by RS232 keyboard signal output channel gating CE corresponding RS232 signal output interface simultaneously, now, the PS/2 keyboard signal received judges by the first main control chip, if be judged as effective PS/2 keyboard signal, it is encoded, be converted to RS232 keyboard signal after adding communication check byte and data statistics byte to be exported by this RS232 signal output interface, the clock line dragging down outside PS/2 keyboard before transmitting communicates to suppress it, and discharge clock line after sending, if be judged as invalid PS/2 keyboard signal, re-power to outside PS/2 keyboard by control 5V power source semiconductor switch, repeat said process, until export effective PS/2 keyboard signal, ensure the correctness sending to the RS232 keyboard signal of computing machine, the RS232 keyboard signal exported is with communication check byte and data statistics byte.
In like manner, after powering on, PS/2 mouse signal receive with the second main control chip initialization in processing unit after time delay 590ms powered to outside PS/2 mouse by control 5V power source semiconductor switch, second main control chip analog computer carries out initialization and enable operation by outside PS/2 mouse input interface to outside PS/2 mouse, discharge clock line and the data line of outside PS/2 mouse, read self-inspection that outside PS/2 mouse uploads by instruction and device id simultaneously, complete the Initialize installation of outside PS/2 mouse and send the enable outside PS/2 mouse of the corresponding command, it is made to enter normal duty, after trigger external PS/2 mouse, second main control chip reads PS/2 mouse signal that outside PS/2 mouse uploads and stores, circular test switches the state of gauge tap and judges toggle bit simultaneously, light LED light corresponding to this RS232 signal output interface by RS232 mouse signal output channel gating CE corresponding RS232 signal output interface simultaneously, now, the PS/2 mouse signal received judges by the second main control chip, if be judged as effective PS/2 mouse signal, it is encoded, be converted to RS232 mouse signal after adding communication check byte and data statistics byte to be exported by this RS232 signal output interface, the clock line dragging down outside PS/2 mouse before transmitting communicates to suppress it, and discharge clock line after sending, if be judged as invalid PS/2 mouse signal, re-power to outside PS/2 mouse by control 5V power source semiconductor switch, repeat said process, until export effective PS/2 mouse signal, ensure the correctness sending to the RS232 mouse signal of computing machine, the RS232 mouse signal exported is with communication check byte and data statistics byte.
Multiple " the PS/2 keyboard and mouse simulator " of PS/2 keyboard and mouse switching device shifter coupled computer near-end of the present invention uses, whenever realize a set of outside PS/2 keyboard of multiple stage computer utility and outside PS/2 mouse, and the outside PS/2 keyboard of any occasion and outside PS/2 mouse disconnect and all can not affect computer operation.In PS/2 keyboard and mouse switching device shifter of the present invention, each RS232 signal output interface is connected respectively a PS/2 keyboard and mouse simulator, PS/2 keyboard and mouse simulator can adopt prior art, PS/2 keyboard and mouse simulator is for receiving the RS232 keyboard signal and RS232 mouse signal that in PS/2 keyboard and mouse switching device shifter of the present invention, RS232 signal output interface exports, and the PS/2 keyboard signal simultaneously the RS232 keyboard signal received being converted to emulation, PS/2 mouse signal RS232 mouse signal being converted to emulation export to corresponding computing machine.
Claims (4)
1. a PS/2 keyboard and mouse switching device shifter, is characterized in that, comprising:
The PS/2 keyboard signal be made up of the first main control chip and RS232 keyboard signal output channel gating chip receives and processing unit, the outside PS/2 input through keyboard interface be connected with the first main control chip, the 5V power source semiconductor switch be connected with outside PS/2 input through keyboard interface with the first main control chip respectively, the PS/2 mouse signal be made up of the second main control chip and RS232 mouse signal output channel gating chip receives and processing unit, the outside PS/2 mouse input interface be connected with the second main control chip, another 5V power source semiconductor switch be connected with outside PS/2 mouse input interface with the second main control chip respectively, the switching gauge tap be connected with the second main control chip with the first main control chip respectively, the output channel indicating member be connected with switching gauge tap, multiple RS232 signal output interface, each RS232 signal output interface is all connected with RS232 mouse signal output channel gating chip with RS232 keyboard signal output channel gating chip,
Outside PS/2 keyboard is by outside PS/2 input through keyboard interface connecting system, after described first main control chip initialization, time delay 590ms powers to outside PS/2 keyboard by control 5V power source semiconductor switch, analog computer discharges clock line and the data line of outside PS/2 keyboard, read self-inspection that outside PS/2 keyboard uploads by instruction and device id, complete the Initialize installation of outside PS/2 keyboard and send the enable outside PS/2 keyboard of the corresponding command, making it enter normal duty, after trigger external PS/2 keyboard, first main control chip reads PS/2 keyboard signal that outside PS/2 keyboard uploads and stores, circular test switches the state of gauge tap and judges toggle bit simultaneously, carry out strobe state instruction by output channel indicating member by the corresponding RS232 signal output interface of RS232 keyboard signal output channel gating CE simultaneously, the PS/2 keyboard signal received judges by the first main control chip, if be judged as effective PS/2 keyboard signal, it is encoded, be converted to RS232 keyboard signal after adding communication check byte and data statistics byte to be exported by this RS232 signal output interface, if be judged as invalid PS/2 keyboard signal, re-power to outside PS/2 keyboard by control 5V power source semiconductor switch, repeat said process until export effective PS/2 keyboard signal,
Outside PS/2 mouse is by outside PS/2 mouse input interface connecting system, after described second main control chip initialization, time delay 590ms powers to outside PS/2 mouse by control 5V power source semiconductor switch, analog computer discharges clock line and the data line of outside PS/2 mouse, read self-inspection that outside PS/2 mouse uploads by instruction and device id, complete the Initialize installation of outside PS/2 mouse and send the enable outside PS/2 mouse of the corresponding command, making it enter normal duty, after trigger external PS/2 mouse, second main control chip reads PS/2 mouse signal that outside PS/2 mouse uploads and stores, circular test switches the state of gauge tap and judges toggle bit simultaneously, carry out strobe state instruction by output channel indicating member by the corresponding RS232 signal output interface of RS232 mouse signal output channel gating CE simultaneously, the PS/2 mouse signal received judges by the second main control chip, if be judged as effective PS/2 mouse signal, it is encoded, be converted to RS232 mouse signal after adding communication check byte and data statistics byte to be exported by this RS232 signal output interface, if be judged as invalid PS/2 mouse signal, re-power to outside PS/2 mouse by control 5V power source semiconductor switch, repeat said process until export effective PS/2 mouse signal.
2. a kind of PS/2 keyboard and mouse switching device shifter according to claim 1, it is characterized in that, described output channel indicating member is made up of multiple LED light, and multiple LED light is all connected with switching gauge tap, each LED light correspondence instruction RS232 signal output interface.
3. a kind of PS/2 keyboard and mouse switching device shifter according to claim 1, it is characterized in that, described first main control chip and the second main control chip all adopt microcontroller chip.
4. a kind of PS/2 keyboard and mouse switching device shifter according to claim 1, is characterized in that, described RS232 keyboard signal output channel gating chip and RS232 mouse signal output channel gating chip all adopt 5V bus switch chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410783252.6A CN104503595A (en) | 2014-12-16 | 2014-12-16 | PS/2 keyboard-mouse switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410783252.6A CN104503595A (en) | 2014-12-16 | 2014-12-16 | PS/2 keyboard-mouse switching device |
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| Publication Number | Publication Date |
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| CN104503595A true CN104503595A (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410783252.6A Pending CN104503595A (en) | 2014-12-16 | 2014-12-16 | PS/2 keyboard-mouse switching device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1677325A (en) * | 2004-03-31 | 2005-10-05 | 联想(北京)有限公司 | Method and device for two-way communication between virtual PS/2 apparatus and host machine |
| CN101634904A (en) * | 2008-07-25 | 2010-01-27 | 宏正自动科技股份有限公司 | Kvm system |
| CN201532612U (en) * | 2009-05-08 | 2010-07-21 | 沈雷 | Controlled end of digital type KVM switcher |
| US7793019B1 (en) * | 2004-08-25 | 2010-09-07 | American Megatrends, Inc. | Redirecting input and output for multiple computers |
| CN202018635U (en) * | 2011-04-02 | 2011-10-26 | 浪潮电子信息产业股份有限公司 | Device capable of realizing switching of PS (personal system)/2 signals in KVM (kernel-based virtual machine) |
-
2014
- 2014-12-16 CN CN201410783252.6A patent/CN104503595A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1677325A (en) * | 2004-03-31 | 2005-10-05 | 联想(北京)有限公司 | Method and device for two-way communication between virtual PS/2 apparatus and host machine |
| US7793019B1 (en) * | 2004-08-25 | 2010-09-07 | American Megatrends, Inc. | Redirecting input and output for multiple computers |
| CN101634904A (en) * | 2008-07-25 | 2010-01-27 | 宏正自动科技股份有限公司 | Kvm system |
| CN201532612U (en) * | 2009-05-08 | 2010-07-21 | 沈雷 | Controlled end of digital type KVM switcher |
| CN202018635U (en) * | 2011-04-02 | 2011-10-26 | 浪潮电子信息产业股份有限公司 | Device capable of realizing switching of PS (personal system)/2 signals in KVM (kernel-based virtual machine) |
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Application publication date: 20150408 |
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