CN101246393B - Computer device and keyboard input operation method - Google Patents
Computer device and keyboard input operation method Download PDFInfo
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- CN101246393B CN101246393B CN2007100840767A CN200710084076A CN101246393B CN 101246393 B CN101246393 B CN 101246393B CN 2007100840767 A CN2007100840767 A CN 2007100840767A CN 200710084076 A CN200710084076 A CN 200710084076A CN 101246393 B CN101246393 B CN 101246393B
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Abstract
A computer device and operation method of keyboard input comprising receiving an IRQ, reading a first scan code stored in scan code buffer, judging whether the first scan code is a presetting scan code standing for a function shifting key or not, reading and storing a event code in a event code buffer if the first scan code is a presetting scan code, and executing a corresponding service program or function according to the event code.
Description
Technical field
The relevant keyboard input technology of the present invention, the method for operating of relevant especially a kind of computer apparatus and keyboard input thereof.
Background technology
Many computer systems (for example: desktop computer), be to use keyboard as main input media, in order to input instruction or data to computer system.In this type of computer apparatus, keyboard by a keyboard interface (for example: keyboard controller) be coupled to processing unit is.Generally speaking, computor-keyboard uses the switch module of netted or matrix form, when a button on the specific junction in the switch module of described netted or matrix form is depressed, in be built in the keyboard or the keyboard controller that is arranged on the motherboard of computer apparatus can determine the button that is pressed by the position of described network.
Yet, reduction along with portable computer device (for example: notebook computer or super removable computer (UMPC)) volume size, and this class computer apparatus has many additional functions usually, for example: switch display frame on computer apparatus screen or projector, adjustment sound size or adjust the brightness etc. of picture, yet the keyboard quantity that group is located on this class computer apparatus can't distinctly be supported these functions usually.Therefore the keyboard on the existing portable computer device can be provided with a function switch key (Function key usually; The Fn key), make the one key on the keyboard can not only have single function.
For example, " Backspace " key is clear key originally, in order to removing literal or the numeral imported, but can make the loudspeaker of computer apparatus enter a mute state if press the Fn key simultaneously with " Backspace " key.In other words, the part button on the keyboard can have two kinds of functions, when being pressed separately, carry out general utility functions, and for example literal input, removing or renewal or the like then can be carried out a specific function when using with the collocation of Fn key.
In addition, in the portable computer device of this class, the Fn key (for example: F1～F12) is arranged in pairs or groups function key on the keyboard usually, carry out and open keypad lock, open Internet routine, image output is to projector, carry out the pause function of audio-visual program, carry out the fast-forwarding function of audio-visual program, carry out the reverse function of audio-visual program, open park mode, increase the brightness of screen, reduce the brightness of screen, improve the volume of loudspeaker, reduce the volume of loudspeaker, open mute function or other function, so that under the situation that does not increase the keyboard size, additionally increase the controllable function of button.
Summary of the invention
The invention provides a kind of method of operating of keyboard input, comprise receiving an interrupt request; Read one first scan code that is stored in the one scan sign indicating number buffer; Judge whether first scan code is a default scan code; And if first scan code for default scan code, reads and is stored in an event code in the event code buffer, and carry out the service routine or the function of a correspondence according to event code.
The present invention also provides a kind of computer apparatus, comprises a keyboard, has at least one alphanumeric key, at least one function key and at least one function switch key (Fn key); One processing unit; One keyboard controller, couple described keyboard, when being used to alphanumeric key, function key, function switch key or its Macintosh and being pressed, use mutually same look-at-me, cause processing unit to carry out the service routine or the function of a correspondence, if first scan code is not default scan code, then carry out the corresponding function of first scan code.
The present invention also provides a kind of computer apparatus, comprises a keyboard, has at least one alphanumeric key, at least one function key and at least one function switch key (Fn key); One keyboard controller couples keyboard, comprises that one scan sign indicating number buffer is with an event code buffer; An and processing unit, after being used to receive an interrupt request, read one first scan code that is stored in the scan code buffer, judge whether first scan code represents a default scan code of function switch key, if first scan code reads and is stored in an event code in the event code buffer, and carry out the service routine or the function of a correspondence according to event code for default scan code, if first scan code is not default scan code, then carry out the corresponding function of first scan code.
For above and other objects of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended diagram, be described in detail below:
Description of drawings
Figure 1 shows that the functional block diagram of the computer apparatus of the embodiment of the invention.
Fig. 2 is a synoptic diagram of a keyboard.
The flow chart of steps of the method for operating of the represented keyboard input according to the embodiment of the invention of Fig. 3.
Embodiment
Figure 1 shows that the functional block diagram of the computer apparatus of the embodiment of the invention.Computer apparatus 100 comprises processing unit 10, north bridge chips 11, non-volatility memorizer 12, memory cell 13, South Bridge chip 15, display chip 30, display unit 16, keyboard 18, bus 20, reaches keyboard controller 22, wherein memory cell 13 also comprises random access memory 14 (Random Access Memory, RAM), South Bridge chip 15 also comprises interruptable controller 24, and keyboard controller 22 also comprises scan code buffer 221 and event code buffer 223.
In the present embodiment, computer apparatus 100 can be the desktop computer device, server, Barebone (Barebone), or portable computer device, wherein portable computer device comprises notebook computer (Notebooks), plate computer (Tablet PC), palmtop computer (Palmtops), and super removable computer (UMPC).In the present embodiment, described non-volatility memorizer 12 can be flash memory (Flash), in other embodiments, non-volatility memorizer 12 also can be ROM (read-only memory) (Read Only Memory, ROM).In the present embodiment, display unit 16 can be display panels, and in other embodiments, display unit 16 also can be plasma display, organic EL display panel, a light emitting display panel, or cathode-ray tube display panel.
South Bridge chip 15 is coupled to north bridge chips 11 respectively, non-volatility memorizer 12, and keyboard controller 22.In other example, South Bridge chip 15 also can be coupled to other computer utility appliance, for example: disc driver (Disk Drive), CD-ROM drive, or printer.Whereby, processing unit 10 can come data stored in the access memory unit 13 by north bridge chips 11, and processing unit 10 also can carry out the relevant operation of non-volatility memorizer 12 and keyboard controller 22 by South Bridge chip 15.
In the present embodiment, (Industry StandardArchitecture, ISA) bus is coupled to non-volatility memorizer 12 to South Bridge chip 15 by industrial standard architectures.In the present embodiment, the bus 20 between keyboard controller 22 and the South Bridge chip 15 can be low pin count (in other embodiments, the bus 20 between keyboard controller 22 and the South Bridge chip 15 also can be isa bus for Low Pin Count, LPC) bus.
Furtherly, South Bridge chip 15 is coupled between north bridge chips 11 and the bus 20, with controlled processing unit 10 and be connected to the getting in touch of 22 of keyboard controller of bus 20.In addition, the interruptable controller 24 in the South Bridge chip 15 can receive the look-at-me of keyboard controller 22 by bus 20, and IRQ1 for example informs that processing unit 10 and keyboard controller 22 get in touch so that produce corresponding interrupt request.Similar ground, South Bridge chip 15 also can be by other bus (for example: pci bus, usb bus, the SATA bus, or IDE bus) receive other computer utility appliance look-at-me (for example: IRQ0, IRQ2～IRQ15), inform that to produce corresponding interrupt request processing unit 10 and other computer utility appliance get in touch.
Described keyboard controller 22 is that group is located on the motherboard.It should be noted that, each button on the keyboard 18 has a corresponding contact switch, and these contact switches can come to couple with keyboard controller 22 by connecting line, whereby, keyboard controller 22 is (for example: several milliseconds) just these contact switches of run-down at set intervals, keyboard controller 22 whether has one or more buttons to be pressed and makes its corresponding contact switch produce keyboard signal to judge, so that can produce corresponding scan code (Scan Code) according to the keyboard signal of different key.Then, keyboard controller 22 can be stored to scan code buffer 221 with scan code, and produces the interruptable controller 24 that look-at-me IRQ1 exports South Bridge chip 15 to.In addition, keyboard controller 22 can produce corresponding event code (Event Code) and be stored in the event code buffer 223 when some particular key is pressed on keyboard 18.
It should be noted that in the present embodiment keyboard controller 22 only (for example: look-at-me IRQ1) is transmitted look-at-me by an interrupt request signal line with interruptable controller 24.That is to say, no matter a button or a plurality of button on the keyboard 18 are pressed, keyboard controller 22 all can transmit identical look-at-me to interruptable controller 24 by same interrupt request signal line, the situation that wherein a plurality of buttons are pressed for example is: function switch key (Fn key) and simple function key are (for example: the situation of F1～F12) pushed simultaneously, perhaps Fn key and the single letter key situation of being pushed simultaneously, perhaps a plurality of alphanumeric keys (for example: the situation of being pushed simultaneously Ctrl+Alt key+del key).
When interruption controller 24 received look-at-me IRQ1, interruptable controller 24 can produce interrupt request (Keyboard Interrupt Request) and be sent to processing unit 10.Then, processing unit 10 is sent an affirmation message (Acknowledge) to interruptable controller 24, has received the interrupt request that it was produced to inform interruptable controller 24 processing units 10.The person of connecing, processing unit 10 is carried out a keyboard interrupt service routine (Keyboard Interrupt Service Routine, KBSR), allow the keyboard interrupt service routine obtain the scan code that it produces by keyboard controller 22, to carry out associative operation, for example: convert scan code to represent the alphanumeric key that the user depresses ascii character, perhaps carry out the function that character determined of being pushed.
Generally speaking, the keyboard interrupt service routine can be stored in non-volatility memorizer 12 or the random access memory 14.In certain embodiments, donating bond dish 18 employed keyboard interrupt service routines are basic input/output (Basic Input/Output System, parts BIOS).
The synoptic diagram of Fig. 2 display keyboard 18.Keyboard 18 comprises a plurality of traditional alphanumeric keys (alphanumeric Keys) 181, a plurality of function key (Function Keys) 182, reaches function switch key (Fnkey) 183.For example, alphanumeric key 181 comprises English letters key a～z, numerical key 0～9, Ctrl, shift key, Alt key or the like, and function key 182 comprises F1～F12 key at least.Keyboard controller 22 is coupled to keyboard 18, with detect these alphanumeric keys 181, function key 182, and function switch key 183 whether pressed by the user.
Be noted that, in the embodiment of the invention, at function switch key (Fn) 183 and arbitrary function key (F1～F12) 182 o'clock, or function switch key (Fn) 183 is when being pressed with arbitrary alphanumeric key 181, keyboard controller 22 will produce one group of default scan code, in the present embodiment, the default scan code of this group for example is E023.At this moment, keyboard controller 22 event code that also can produce a correspondence is stored in the event code buffer 223.
Table one is the table of comparisons of event code and its corresponding with service program in the embodiment of the invention.
| Event code | The button that is pressed | Corresponding function |
| ECD01 | Fn+F2 | Open Internet routine |
| ECD02 | Fn+F3 | Open keypad lock |
| ECD03 | Fn+F4 | Image output is to projector |
| ECD04 | Fn+F5 | Carry out the pause function of audio-visual program |
| ECD05 | Fn+F6 | Carry out the fast-forwarding function of audio-visual program |
| ECD06 | Fn+F7 | Carry out the reverse function of audio-visual program |
| ECD07 | Fn+F8 | Open park mode |
| ECD08 | Fn+F9 | Increase the brightness of screen |
| ECD09 | Fn+F10 | Reduce the brightness of screen |
| ECD10 | Fn+F11 | Improve volume |
| ECD11 | Fn+F12 | Reduce volume |
| ECD12 | Fn+Backspace | Open mute function |
Table one
For example, when the F2 key in Fn key 183 and the function key 182 was pressed, keyboard controller 22 can produce default scan code E023 and produce an event code ECD01, represented user's desire to open (or execution) Internet routine.When if the F3 key in Fn key 183 and the function key 182 is pressed, on behalf of user's desire, the event code ECD02 that 22 of keyboard controller can produce default scan code E023 and produce a correspondence open the function of keypad lock, so that keyboard 18 is pinned.Or say that when the F8 key in Fn key 183 and the function key 182 was pressed, on behalf of user's desire, the event code ECD07 that 22 of keyboard controller can produce default scan code E023 and produce a correspondence open park mode to save the electric energy consume.It should be noted that in other embodiments when Fn key 183 and arbitrary alphanumeric key 181 were pressed, keyboard controller 22 also can produce default scan code E023 and produce a corresponding event code.
When alphanumeric key 181, function key 182 or its combination or hot key (Hotkey) when being depressed, keyboard controller 22 can produce corresponding scan code, but does not comprise default scan code E023, and expression function switch key this moment (Fn) 183 is not pressed.
The process flow diagram of the method for operating of the represented keyboard input according to the embodiment of the invention of Fig. 3, performed by processing unit 10.In step S310, receive an interrupt request.In step S320, read first scan code that is stored in the scan code buffer.In step S330, judge whether first scan code represents the default scan code of function switch key.In step S340, if first scan code reads and is stored in an event code in the event code buffer for default scan code, and service routine or the function of carrying out a correspondence according to described event code.
Below method of operating the method for the keyboard input of the explanation embodiment of the invention is performed by processing unit 10, please also refer to Fig. 1 and Fig. 2.
At first, after processing unit 10 detects the interrupt request that interruptable controller 24 sent, can carry out corresponding keyboard interrupt service routine.Generally speaking, interruptable controller 24 can be in order to the look-at-me of sending according to different assemblies, and for example IRQ0～IRQ15 produces different interrupt request and informs processing unit 10, and processing unit 10 will be carried out corresponding interrupt service routine.In the present embodiment, when having any one button or a plurality of button to be pressed in the keyboard 18, the look-at-me IRQ1 that interruptable controller 24 will be produced according to keyboard controller 22 sends interrupt request and informs processing unit 10, so that processing unit 10 is carried out the keyboard interrupt service routines.
Be noted that, interrupt request is that interruptable controller 24 detects the look-at-me IRQ1 that keyboard controller 22 sends and produces, and (institute produced when the combination of the combination of F1～F12) 182, function switch key (Fn key) 183 and alphanumeric key 181 or function switch key (Fn key) 183 and function key 182 was pressed because keyboard controller 22 detects function switch key (Fn key) 183 on the keyboard 18, alphanumeric key 181, function key and look-at-me IRQ1 is.
The keyboard interrupt service routine can be stored in the scan code in the scan code buffer 221 in the keyboard controller 22 to read earlier whereby, and calls out a filter (FP) and judge that whether this scan code is the default scan code in the present embodiment.In the present embodiment, filter can be stored in the disc driver (Disk Drive) or BIOS of computer apparatus 100.In preferred embodiment of the present invention, on behalf of the combination of other button on function switch key (Fn key) 183 or itself and keyboard 18, default scan code depressed the scan code that is produced by the user.For example, default scan code can be E023, but is not limited to this.
When having served as the filter fly preface and having judged present scan code for default scan code (E023), filter then can read the event code that is stored in event code buffer 223 in the keyboard controller 22, so that BIOS in the computer apparatus 100 or application program can be carried out the service routine (or function) of a correspondence according to obtained event code.
For example, shown in table one shows, suppose that the event code that is read is ECD01, represent function switch key (Fn) 183 and function key F2 to be pressed by the user, 100 of computer apparatus can be carried out a service routine, to open (or execution) Internet routine.
In other words, BIOS in the computer apparatus 100 can be according to the event code of being read, optionally carry out the service routine of a correspondence, so as to open keypad lock, open Internet routine, image output to projector, carry out audio-visual program pause function, carry out audio-visual program fast-forwarding function, carry out audio-visual program reverse function, open park mode, increase screen brightness, reduce screen brightness, improve volume, reduce volume, open mute function or other function.
If it is not when presetting scan code (E023) that filter is judged the scan code that is read, then the keyboard interrupt service routine is carried out the corresponding function that is pressed, for example: the scan code that the keyboard interrupt service routine is obtained converts the ascii character of representing the alphanumeric key that the user depresses to, perhaps carries out the function of being depressed that character determined.
In addition, what deserves to be mentioned is, no matter be keyboard interrupt service routine or filter when carrying out associative operation, its associative operation still needs to carry out related operation by processing unit 10.Therefore, in the explanation of preferred embodiment of the present invention, can say that also processing unit 10 judges whether the scan code in the keyboard controller 22 is the default scan code of function switch key, if the scan code in the keyboard controller 22 is default scan code, then processing unit 10 reads the event code that is stored in the event code buffer 223, and processing unit 10 can be carried out the service routine or the function of a correspondence according to event code.
Though the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; any person skilled in the art person without departing from the spirit and scope of the present invention; when can making all changes that is equal to or replacement, so protection scope of the present invention is when looking being as the criterion that claims define.
Claims (12)
1. the method for operating of a keyboard input is characterized in that, comprises the steps:
Receive an interrupt request;
Read one first scan code that is stored in the one scan sign indicating number buffer;
Judge whether described first scan code is a default scan code; And
If described first scan code is described default scan code, read an event code that is stored in the event code buffer, and carry out the service routine or the function of a correspondence according to described event code, if described first scan code is not described default scan code, then carry out the corresponding function of described first scan code.
2. method of operating as claimed in claim 1 is characterized in that, described first scan code is produced when being pressed by the combination of other button on a function switch key or itself and the keyboard.
3. method of operating as claimed in claim 1 is characterized in that, described interrupt request is produced when detecting a look-at-me by a South Bridge chip.
4. method of operating as claimed in claim 3 is characterized in that, described look-at-me is that a function switch key is pressed, produces when a function key is pressed, an alphanumeric key is pressed or wherein the two is pressed on detecting a keyboard.
5. method of operating as claimed in claim 1, it is characterized in that, when a function switch key and a function key or an alphanumeric key are pressed simultaneously, store described first scan code to described scan code buffer, and store described event code to described event code buffer.
6. a computer installation is characterized in that, comprising:
One keyboard has at least one alphanumeric key, at least one function key, reaches at least one function switch key;
One processing unit;
One South Bridge chip is coupled between described processing unit and the keyboard controller; And
One keyboard controller, couple described keyboard, with in described alphanumeric key, described function key, when described function switch key or its Macintosh are pressed, produce mutually same look-at-me, described South Bridge chip is when receiving described look-at-me, produce an interrupt request, described processing unit is after receiving described interrupt request, read one first scan code that is stored in the one scan sign indicating number buffer, judge whether described first scan code is a default scan code of the described function switch key of representative, if described first scan code is described default scan code, read and be stored in an event code in the event code buffer, and carry out the service routine or the function of a correspondence according to described event code,, then carry out the corresponding function of first scan code if first scan code is not default scan code.
7. a computer installation is characterized in that, comprising:
One keyboard has at least one alphanumeric key, at least one function key and at least one function switch key;
One keyboard controller couples described keyboard, comprises an one scan sign indicating number buffer and an event code buffer;
One processing unit, after being used to receive an interrupt request, read one first scan code that is stored in the described scan code buffer, judge whether described first scan code is a default scan code of the described function switch key of representative, if described first scan code is described default scan code, read and be stored in an event code in the event code buffer, and carry out the service routine or the function of a correspondence according to described event code, if described first scan code is not described default scan code, then carry out the corresponding function of described first scan code.
8. computer installation as claimed in claim 7 is characterized in that, when described keyboard controller is pressed in described function switch key, produces described first scan code and is stored to described scan code buffer.
9. computer installation as claimed in claim 8 is characterized in that, described keyboard controller is in detecting described function switch key, described function key, producing a look-at-me when alphanumeric key is pressed or wherein the two is pressed.
10. computer installation as claimed in claim 9, it is characterized in that, described keyboard controller is when described function switch key and described function key or described alphanumeric key are pressed simultaneously, store described first scan code to described scan code buffer, and store described event code to described event code buffer.
11. computer installation as claimed in claim 7 is characterized in that, comprises that also an interruptable controller is in order to produce described interrupt request according to a look-at-me.
12. computer installation as claimed in claim 11 is characterized in that, described interruptable controller is arranged in the South Bridge chip.
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| CN2007100840767A CN101246393B (en) | 2007-02-15 | 2007-02-15 | Computer device and keyboard input operation method |
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| CN103064526B (en) * | 2011-10-24 | 2018-04-20 | 研祥智能科技股份有限公司 | A kind of keyboard adds unlocking method, system and keyboard |
| CN104866114B (en) * | 2014-02-24 | 2017-12-29 | 联想(北京)有限公司 | A kind of hardware button control method, device and electronic equipment |
| TWI745961B (en) * | 2020-05-11 | 2021-11-11 | 宏碁股份有限公司 | Electronic apparatus and key function switching method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030201980A1 (en) * | 2002-04-26 | 2003-10-30 | Wang Chin Ping | Apparatus for inputting special character and method for the same |
| CN2676282Y (en) * | 2003-08-29 | 2005-02-02 | 纬创资通股份有限公司 | Notebook computer |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030201980A1 (en) * | 2002-04-26 | 2003-10-30 | Wang Chin Ping | Apparatus for inputting special character and method for the same |
| CN2676282Y (en) * | 2003-08-29 | 2005-02-02 | 纬创资通股份有限公司 | Notebook computer |
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