CN104834615A - PS/2 (Personal Computer/2) and USB (Universal Serial Bus) adaptive structure and implementation method for same - Google Patents
PS/2 (Personal Computer/2) and USB (Universal Serial Bus) adaptive structure and implementation method for same Download PDFInfo
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- CN104834615A CN104834615A CN201510210800.0A CN201510210800A CN104834615A CN 104834615 A CN104834615 A CN 104834615A CN 201510210800 A CN201510210800 A CN 201510210800A CN 104834615 A CN104834615 A CN 104834615A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/387—Information transfer, e.g. on bus using universal interface adapter for adaptation of different data processing systems to different peripheral devices, e.g. protocol converters for incompatible systems, open system
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Abstract
The invention provides a PS/2 (Personal Computer/2) and USB (Universal Serial Bus) adaptive structure and an implementation method for the same. The PS/2 and USB adaptive structure comprises a PS/2 equipment input interface, a USB equipment input interface, a PS/2 and USB adaptive interface, an MCU (Micro Controller Unit) chip and a switch chip. A specific implementation process comprises the following steps of initializing PS/2 and USB adaptive equipment; controlling the switch chip to connect a PS/2 port of the MCU chip with a port of a host computer; transmitting a handshaking signal to the PS/2 and USB adaptive equipment by using the host computer, and checking whether the PS/2 and USB adaptive equipment receives the handshaking signal or not within a specified time. Compared with the prior art, the PS/2 and USB adaptive structure and the implementation method for the same have the advantages that the flexibility and the convenience of the equipment are improved, the whole structure is simple in circuit design, the implementation process of the method is simple, the universality of the PS/2 and USB adaptive equipment is achieved, influence on a transmission effect is eliminated, and high practicability and easiness in popularization are achieved.
Description
Technical field
The present invention relates to field of computer technology, specifically a kind of PS/2 and USB adaptive structure and its implementation.
Background technology
PS/2 and usb protocol are agreement common on computer, all has the advantages such as function is simple and practical, technology maturity is high, communication distance is far away, be usually used in the peripheral apparatus of the computing machine such as mouse, keyboard.But PS/2 interface only supported by early stage part main frame, present part main frame only supports USB interface, and difference is between the two comparatively large, illustrates for keyboard, PS/2 keyboard belongs to be pressed what and just what is reported, upspring and what is reported whatever, if press 10 keys simultaneously, just report 10 successively and press event, as for the state that can record how many buttons simultaneously, agreement does not limit, and depends on operating system itself, so PS/2 keyboard can accomplish that unlimited button is without punching in theory; And USB keyboard packet only has 8 bytes, wherein 2 type flags states, all the other 6 bytes are used for recording the scan code of the current button pressed or upspring, so USB keyboard describes the state of 6 buttons at most simultaneously.Because both agreements are different, cause relevant external unit cannot use with compatible mainframe, based on this, now provide a kind of PS/2 and USB adaptive structure and its implementation, the method well solves the problem that external unit and compatible mainframe use.
Summary of the invention
Technical assignment of the present invention is in the deficiencies in the prior art, provides a kind of PS/2 and USB adaptive structure and its implementation.
Technical scheme of the present invention realizes in the following manner, this a kind of PS/2 and USB adaptive structure, comprise a PS/2 equipment input interface, a USB device input interface, a PS/2 and USB adaptive interface, MCU chip, a switch chip, wherein
PS/2 equipment input interface is connected with peripheral hardware with USB device input interface, and this peripheral hardware comprises key mouse;
PS/2 and USB adaptive interface is connected with main frame;
MCU chip, built-in PS/2 port and USB port, connect above-mentioned PS/2 equipment input interface and USB device input interface and the protocol conversion of control PS/2 or USB input equipment;
Switch chip, is responsible for the signal switching communicated with host side.
A kind of PS/2 and USB self-adaptation implementation method, specific implementation process is:
One, initialization is carried out to PS/2 and USB self-adaptation equipment;
Two, be connected with host port by the PS/2 port of gauge tap chip by MCU chip;
Three, main frame sends handshake to PS/2 and USB self-adaptation equipment, checks whether PS/2 and USB self-adaptation equipment receives this handshake at the appointed time, if it is starts and main-machine communication; Otherwise be switched to USB port.
The detailed process of described step one is: after main frame powers on, and is powered to PS/2 and USB self-adaptation equipment by PS/2 and USB adaptive interface, PS/2 and USB self-adaptation device initialize, and to PS/2 equipment input interface and the initialization of USB device input interface.
The detailed process of described step 3 is:
Main frame sends handshake data to PS/2 and USB self-adaptation equipment;
When PS/2 and USB self-adaptation equipment receives the PS/2 handshake that main frame sends in special time, then PS/2 and USB self-adaptation equipment performs PS/2 relative program, and peripheral apparatus data are pressed PS/2 agreement and main-machine communication by PS/2 port; Otherwise the USB port of MCU chip is connected with main frame by gauge tap chip, initialization USB port:
When PS/2 and USB self-adaptation equipment receives the USB handshake that main frame sends in special time, then PS/2 and USB self-adaptation equipment performs USB relative program, and peripheral apparatus data are pressed usb protocol and main-machine communication by USB port; Otherwise return step 2 and continue operation.
The beneficial effect that the present invention is compared with prior art produced is:
A kind of PS/2 and USB adaptive structure of the present invention and its implementation simple and practical, reliability is strong, improve the compatibility of external unit and main frame, improve dirigibility and the convenience of equipment, the circuit design of total is simple, and method implementation procedure is simplified, realize the versatility of PS/2 and USB device, and do not affect laser propagation effect, practical, be easy to promote.
Accompanying drawing explanation
Accompanying drawing 1 is hardware configuration schematic diagram of the present invention.
Accompanying drawing 2 is method realization flow figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, a kind of PS/2 and USB adaptive structure provided by the present invention and its implementation are described in detail below.
As shown in Figure 1, a kind of PS/2 and USB adaptive structure, comprises a PS/2 equipment input interface, a USB device input interface, a PS/2 and USB adaptive interface, MCU chip, a switch chip, wherein
PS/2 equipment input interface is connected with peripheral hardware with USB device input interface, and this peripheral hardware comprises key mouse;
PS/2 and USB adaptive interface is connected with main frame;
MCU chip, built-in PS/2 port and USB port, connect above-mentioned PS/2 equipment input interface and USB device input interface and the protocol conversion of control PS/2 or USB input equipment;
Switch chip, is responsible for the signal switching communicated with host side.
As shown in Figure 2, a kind of PS/2 and USB self-adaptation implementation method, specific implementation process is:
One, initialization is carried out to PS/2 and USB self-adaptation equipment;
Two, be connected with host port by the PS/2 port of gauge tap chip by MCU chip;
Three, main frame sends handshake to PS/2 and USB self-adaptation equipment, checks whether PS/2 and USB self-adaptation equipment receives this handshake at the appointed time, if it is starts and main-machine communication; Otherwise be switched to USB port.
The detailed process of described step one is: after main frame powers on, and is powered to PS/2 and USB self-adaptation equipment by PS/2 and USB adaptive interface, PS/2 and USB self-adaptation device initialize, and to PS/2 equipment input interface and the initialization of USB device input interface.
The detailed process of described step 3 is:
Main frame sends handshake data to PS/2 and USB self-adaptation equipment;
When PS/2 and USB self-adaptation equipment receives the PS/2 handshake that main frame sends in special time, then PS/2 and USB self-adaptation equipment performs PS/2 relative program, and peripheral apparatus data are pressed PS/2 agreement and main-machine communication by PS/2 port; Otherwise the USB port of MCU chip is connected with main frame by gauge tap chip, initialization USB port:
When PS/2 and USB self-adaptation equipment receives the USB handshake that main frame sends in special time, then PS/2 and USB self-adaptation equipment performs USB relative program, and peripheral apparatus data are pressed usb protocol and main-machine communication by USB port; Otherwise return step 2 and continue operation.
Except the technical characteristic described in instructions, be the known technology of those skilled in the art.
Claims (4)
1. a PS/2 and USB adaptive structure, is characterized in that, comprises a PS/2 equipment input interface, a USB device input interface, a PS/2 and USB adaptive interface, MCU chip, a switch chip, wherein
PS/2 equipment input interface is connected with peripheral hardware with USB device input interface, and this peripheral hardware comprises key mouse;
PS/2 and USB adaptive interface is connected with main frame;
MCU chip, built-in PS/2 port and USB port, connect above-mentioned PS/2 equipment input interface and USB device input interface and the protocol conversion of control PS/2 or USB input equipment;
Switch chip, is responsible for the signal switching communicated with host side.
2. a PS/2 and USB self-adaptation implementation method, is characterized in that, specific implementation process is:
One, initialization is carried out to PS/2 and USB self-adaptation equipment;
Two, be connected with host port by the PS/2 port of gauge tap chip by MCU chip;
Three, main frame sends handshake to PS/2 and USB self-adaptation equipment, checks whether PS/2 and USB self-adaptation equipment receives this handshake at the appointed time, if it is starts and main-machine communication; Otherwise be switched to USB port.
3. a kind of PS/2 and USB self-adaptation implementation method according to claim 2, it is characterized in that, the detailed process of described step one is: after main frame powers on, powered to PS/2 and USB self-adaptation equipment by PS/2 and USB adaptive interface, PS/2 and USB self-adaptation device initialize, and to PS/2 equipment input interface and the initialization of USB device input interface.
4. a kind of PS/2 and USB self-adaptation implementation method according to claim 2, it is characterized in that, the detailed process of described step 3 is:
Main frame sends handshake data to PS/2 and USB self-adaptation equipment;
When PS/2 and USB self-adaptation equipment receives the PS/2 handshake that main frame sends in special time, then PS/2 and USB self-adaptation equipment performs PS/2 relative program, and peripheral apparatus data are pressed PS/2 agreement and main-machine communication by PS/2 port; Otherwise the USB port of MCU chip is connected with main frame by gauge tap chip, initialization USB port:
When PS/2 and USB self-adaptation equipment receives the USB handshake that main frame sends in special time, then PS/2 and USB self-adaptation equipment performs USB relative program, and peripheral apparatus data are pressed usb protocol and main-machine communication by USB port; Otherwise return step 2 and continue operation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510210800.0A CN104834615A (en) | 2015-04-29 | 2015-04-29 | PS/2 (Personal Computer/2) and USB (Universal Serial Bus) adaptive structure and implementation method for same |
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| CN201510210800.0A CN104834615A (en) | 2015-04-29 | 2015-04-29 | PS/2 (Personal Computer/2) and USB (Universal Serial Bus) adaptive structure and implementation method for same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105740192A (en) * | 2016-01-28 | 2016-07-06 | 山东超越数控电子有限公司 | PS2 interface keyboard/mouse hot plug system and realization method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369762A (en) * | 2001-02-12 | 2002-09-18 | 民生科技股份有限公司 | Dual-purpose computer keyboard and its method for automatically detecting interface state |
| CN1959664A (en) * | 2006-10-31 | 2007-05-09 | 埃派克森微电子(上海)有限公司 | Automatic method for identifying signal interfaces of electronic equipment |
| CN101782879A (en) * | 2009-01-16 | 2010-07-21 | 银灿科技股份有限公司 | Signal conversion device of all-in-one serial bus connector |
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2015
- 2015-04-29 CN CN201510210800.0A patent/CN104834615A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369762A (en) * | 2001-02-12 | 2002-09-18 | 民生科技股份有限公司 | Dual-purpose computer keyboard and its method for automatically detecting interface state |
| CN1959664A (en) * | 2006-10-31 | 2007-05-09 | 埃派克森微电子(上海)有限公司 | Automatic method for identifying signal interfaces of electronic equipment |
| CN101782879A (en) * | 2009-01-16 | 2010-07-21 | 银灿科技股份有限公司 | Signal conversion device of all-in-one serial bus connector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105740192A (en) * | 2016-01-28 | 2016-07-06 | 山东超越数控电子有限公司 | PS2 interface keyboard/mouse hot plug system and realization method thereof |
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Application publication date: 20150812 |