CN101241396A - Keyboard capable of locking key - Google Patents
Keyboard capable of locking key Download PDFInfo
- Publication number
- CN101241396A CN101241396A CNA2007102001583A CN200710200158A CN101241396A CN 101241396 A CN101241396 A CN 101241396A CN A2007102001583 A CNA2007102001583 A CN A2007102001583A CN 200710200158 A CN200710200158 A CN 200710200158A CN 101241396 A CN101241396 A CN 101241396A
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- key
- locking
- keyboard
- pin
- control element
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Abstract
A keyboard capable of locking keys comprises a plurality of push keys, a keyboard control chip for controlling said push keys and a switch control circuit comprising a key locking switch push button and a switch control element. The key locking switch push button is connected electrically to the locking status pin of said keyboard control chip by said switch control element. Said key locking switch push button can control the electrical level status of said switch control element output terminal to lock or unlock said a plurality of push keys. According to the invention, each push key of the key board can be locked in a requirement status by using said switch control circuit onto said keyboard control chip, thereby misoperation of working personnel is prevented, and operational reliability of the invented device is increased.
Description
Technical field
The present invention relates to a kind of keyboard.
Background technology
Keyboard is one of most important input equipment on server, workstation and the common personal computer.
At present, the part buttons such as numerical key on the keyboard that uses on server, workstation and the personal computer can be locked, but also have most of button can not be locked and be in the triggering state constantly.So, when some important operations or test formula are worked on computers,, easily cause described operation or test formula to interrupt suddenly because operating personnel can careless mistake bump button.So, then not only waste moves or the test duration, also may cause serious economy loss, thereby has reduced the reliability when this kind equipment uses.
Summary of the invention
In view of foregoing, but be necessary to provide a kind of keyboard of the locking key that can all lock to all buttons on the keyboard.
But the invention provides a kind of keyboard of locking key, the keyboard control chip and the ON-OFF control circuit that comprise plurality of keys, the described button of a control, described ON-OFF control circuit comprises a key-locking switch button and a switch control element, described key-locking switch button is by the lock-out state pin electric connection of described switch control element and described keyboard control chip, and the level state of the described switch control element of described key-locking switch button may command output terminal is so that described plurality of keys is locked or unlock.
Compare prior art, but the keyboard of described locking key is by being applied to described ON-OFF control circuit on the described keyboard control chip, make that all buttons on the described keyboard all can be locked under the situation of needs, thereby prevented staff's maloperation, improved the reliability that this kind equipment uses.
Description of drawings
The invention will be further described in conjunction with embodiment with reference to the accompanying drawings.
But Fig. 1 is the stereographic map of the better embodiment of the keyboard of the present invention's locking key.
But Fig. 2 is the partial circuit figure of the better embodiment of the keyboard of the present invention's locking key.
Embodiment
Please consult Fig. 1 and Fig. 2 jointly, but the better embodiment of the keyboard 10 of the present invention's locking key comprises a Keysheet module and an ON-OFF control circuit 30.Described Keysheet module comprises a keyboard body 22, is arranged at a plurality of keys 24 and a keyboard control chip 26 on the described keyboard body 22.Described keyboard control chip 26 is used for the duty of the described button 24 of programming Control, described keyboard control chip 26 has general input and output (General-purpose I/O Port, be 6PIO) pin 262, described 6PIO pin 262 is the lock-out state pin of described button 24, when described GPIO pin 262 received low level signal, described button 24 was all locked; Otherwise when described GPIO pin 262 received high level signal, described button 24 was disengaged locking and is in normal operating conditions.
Described ON-OFF control circuit 30 comprises a key-locking switch button 32, a switch control element Q, a pull-up resistor R0, a filter capacitor C1 and a resistance R 1.In better embodiment of the present invention, described key-locking switch button 32 adopts the tumbler switch button, and described switch control element Q adopts the P-MOS switching transistor.Described key-locking switch button 32 comprises one first pin 1, one second pin 2 and one the 3rd pin 3; Stir described key-locking switch button 32 described first and second pin 1,2 or described second and third pin 2,3 are communicated with, first pin 1 of described key-locking switch button 32 is connected to the output terminal of a 3.3V voltage source, its 3rd pin 3 direct ground connection.The grid G (control end) of described switch control element Q is connected to second pin 2 of described key-locking switch button 32, and the grid G of described switch control element Q also is connected to the output terminal of described 3.3V voltage source behind described pull-up resistor R0; The source S of described switch control element Q directly is connected to the output terminal of described 3.3V voltage source, and the drain D (output terminal) of described switch control element Q is connected to the GPIO pin 262 of described keyboard control chip 26.Described filter capacitor C1 and resistance R 1 are parallel between the drain D and ground of described switch control element Q.
But the course of work of the keyboard 10 of described locking key is as follows: when computing machine stable operation program, but the key-locking switch button 32 of stirring the keyboard 10 of described locking key to the right is communicated with described first and second pin 1,2, the grid G of then described switch control element Q (P-MOS switching transistor) is a high level, because described switch control element Q is the P-MOS transistor, so end, the GPIO pin 262 of then described keyboard control chip 26 receives low level signal, has avoided maloperation thereby described button 24 is locked.When the formula operation finishes needs use keyboard, but the key-locking switch button 32 of stirring the keyboard 10 of described locking key left is communicated with described second and third pin 2,3, the grid G of then described switch control element Q is a low level, described switch control element Q conducting, the drain D output high level signal of described switch control element Q is to the GPIO pin 262 of described keyboard control chip 26, and then described button 24 all is disengaged locking and is in normal operating conditions.
In this better embodiment, but described key-locking switch button 32 is arranged at the place, dead zone, upper right side of the keyboard 10 of described locking key.Need to prove that described switch control element Q also can be the switching transistor or the on-off circuit of other form, as N-MOS switching transistor, triode etc.; Described key-locking switch button 32 also is not limited to above-mentioned tumbler switch.
But the keyboard 10 of the present invention's locking key is by being applied to described ON-OFF control circuit 30 on the described keyboard control chip 26, make that all buttons 24 of described Keysheet module 20 all can be locked under the situation of needs, thereby prevented staff's maloperation, improved the reliability that this kind equipment uses.
Claims (5)
1. but the keyboard of a locking key, the keyboard control chip that comprises plurality of keys and the described button of a control, it is characterized in that: but the keyboard of described locking key also comprises an ON-OFF control circuit, described ON-OFF control circuit comprises a key-locking switch button and a switch control element, described key-locking switch button is by the lock-out state pin electric connection of described switch control element and described keyboard control chip, and the level state of the described switch control element of described key-locking switch button may command output terminal is so that described plurality of keys is locked or unlock.
But 2. the keyboard of locking key as claimed in claim 1, it is characterized in that: described key-locking switch button is the tumbler switch button, described key-locking switch button comprises one first pin, one second pin and one the 3rd pin; Stirring described key-locking switch button can make described first and second pin or described second and third pin be communicated with respectively, first pin of described key-locking switch button is connected to a voltage source, second pin of described key-locking switch button is connected to the control end of described switch control element, the 3rd pin ground connection of described key-locking switch button.
But 3. the keyboard of locking key as claimed in claim 2, it is characterized in that: described ON-OFF control circuit also comprises a resistance, and described switch control element is a P-MOS switching transistor, and the control end of described switch control element is a grid; The source electrode of described switch control element is connected to described voltage source; The output terminal of described switch control element is drain electrode, and the output terminal of described control element is connected to the lock-out state pin of described keyboard control chip and via described resistance eutral grounding.
But 4. the keyboard of locking key as claimed in claim 3, it is characterized in that: described ON-OFF control circuit also comprises a pull-up resistor, the grid of described switch control element is connected to described voltage source behind described pull-up resistor.
But 5. the keyboard of locking key as claimed in claim 3, it is characterized in that: described ON-OFF control circuit further comprises a filter capacitor, described filter capacitor and described resistance are parallel between the drain electrode and ground of described switch control element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102001583A CN101241396B (en) | 2007-02-06 | 2007-02-06 | Keyboard capable of locking key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102001583A CN101241396B (en) | 2007-02-06 | 2007-02-06 | Keyboard capable of locking key |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101241396A true CN101241396A (en) | 2008-08-13 |
| CN101241396B CN101241396B (en) | 2012-05-23 |
Family
ID=39932962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007102001583A Expired - Fee Related CN101241396B (en) | 2007-02-06 | 2007-02-06 | Keyboard capable of locking key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101241396B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103838385A (en) * | 2012-11-26 | 2014-06-04 | 阿尔卡特朗讯 | Computer and Keyboard |
| CN105786198A (en) * | 2016-02-24 | 2016-07-20 | 合肥联宝信息技术有限公司 | Keyboard key control method and electronic equipment applying same |
| CN106849934A (en) * | 2017-04-13 | 2017-06-13 | 沈阳建筑大学 | A kind of press key locking keyboard |
| CN110399753A (en) * | 2019-06-27 | 2019-11-01 | 苏州浪潮智能科技有限公司 | A kind of control method, system, storage medium and the server of machine box for server lock |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5757616A (en) * | 1996-10-31 | 1998-05-26 | Hewlett-Packard Company | Physical security system for portable computer |
| JP2000207106A (en) * | 1999-01-14 | 2000-07-28 | Nec Corp | Key lock method for keyboard and the keyboard used for the same |
| CN2566358Y (en) * | 2002-08-12 | 2003-08-13 | 联想(北京)有限公司 | Keyboard with lock |
-
2007
- 2007-02-06 CN CN2007102001583A patent/CN101241396B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103838385A (en) * | 2012-11-26 | 2014-06-04 | 阿尔卡特朗讯 | Computer and Keyboard |
| CN105786198A (en) * | 2016-02-24 | 2016-07-20 | 合肥联宝信息技术有限公司 | Keyboard key control method and electronic equipment applying same |
| CN106849934A (en) * | 2017-04-13 | 2017-06-13 | 沈阳建筑大学 | A kind of press key locking keyboard |
| CN106849934B (en) * | 2017-04-13 | 2023-04-28 | 沈阳建筑大学 | Key locking keyboard |
| CN110399753A (en) * | 2019-06-27 | 2019-11-01 | 苏州浪潮智能科技有限公司 | A kind of control method, system, storage medium and the server of machine box for server lock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101241396B (en) | 2012-05-23 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20140206 |