CN1423428A - Method for realizing wire-wireless general-use blue tooth keyboard function - Google Patents
Method for realizing wire-wireless general-use blue tooth keyboard function Download PDFInfo
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- CN1423428A CN1423428A CN 02159954 CN02159954A CN1423428A CN 1423428 A CN1423428 A CN 1423428A CN 02159954 CN02159954 CN 02159954 CN 02159954 A CN02159954 A CN 02159954A CN 1423428 A CN1423428 A CN 1423428A
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Abstract
This invention discloses a common used blue teeth key board for both wire or wireless which can be used as a USB key board or as a blue teeth key board removing USB cable. In case of no electricity in the cell, severe wireless interference, the blue teeth key board can not work normally then plugging USB cable making it to a wire key board to greatly increase its availability.
Description
Technical field
The present invention relates to Bluetooth technology and human interface device in the wireless communication field, relate to the terminal installation that utilizes Bluetooth technology to realize particularly.
Background technology
Along with the urgency of computer user's quantity increases, the computer user is more and more higher to the requirement of human interface device (as keyboard, mouse).Though keyboard, mouse are widely used at present, become the basic configuration of computer.But, in any case in some specific application scenario, traditional mouse-keyboard is the underaction because a cable connection is arranged still, restricted such as the meeting of occasions such as recreation, mobile office, demonstration lecture.And notebook computer more and more is applied to occasions such as office, exploitation, commercial affairs, but the keyboard of notebook computer is somewhat narrow and small and narrow, and is comfortable not as conventional keyboard on operating habit; Touch pad commonly used on the notebook does not meet general use habit yet, and is accurate not as mouse yet.Therefore, notebook needs a kind of external connection keyboard that connects easily and use and mouse, expands the man-machine interface peripheral hardware.
And such as public arenas such as meeting, lectures, when the instructor does projection demonstration explanation with computer, also need the man-machine interface control appliance of an energy in certain distance control computer page turning demonstration, finish some simple controls to computer, make the instructor more can be fully, unfetteredly explain, and need not others cooperation, more follow one's bent.
In the prior art, exist a kind of short-distance wireless communication technology that is called as bluetooth (Bluetooth), it is operated in ISM (industry-science-medical treatment) frequency range of 2.4GHz.The piconet (Piconet) that the basic network topology of bluetooth is made up of a main control device and maximum seven slaves adopts the mode of time division multiple access (TDMA) to communicate between main control device and the slave.Utilize Bluetooth technology, can various device be coupled together in low-cost mode.The special interest group of bluetooth (Special Interest Group, be called for short SIG) be the non-government organization that formulates and instruct Bluetooth specification and application, it has defined (the Human Interface Device Profile of the human interface applications framework in the bluetooth applications, HID), a kind of approach that utilizes Bluetooth technology to realize the wireless human machine interface equipment has been proposed, promptly, computer as main control device (comprises notebook, hereinafter referred to as main equipment) and all be equipped with the blue teeth wireless transceiver module as the wireless blue tooth human interface device (hereinafter referred to as bluetooth people machine equipment) of slave unit, utilize bluetooth to carry out the user to the Master device operation transmission of Information.Its exemplary apparatus comprises: keyboard and point device (pointing device), mouse for example, tracking ball, joystick; The control appliance of video tape recorder, phone, game machine etc., for example data glove, steering wheel, rudder; Even also comprise the equipment that does not need the people mutual, for example barcode machine, thermometer and potentiometer.Typical application is blue-tooth radio-mouse and keyboard the most.Like this, just can save loaded down with trivial details connecting line, and the user needn't be limited in the crawl space of computer front, so long as in 10 meters scopes, can control and operate main equipment anywhere freely.Above-mentioned approach has solved the conventional keyboard underaction to a great extent, irremovable problem, and bluetooth applications in human interface device also have power consumption little, do not have directive property, advantage such as antijamming capability is strong, cost is low, high conformity, interconnectivity are good, have a good application prospect.
But there is certain defective in pure bluetooth keyboard.Bluetooth keyboard relies on powered battery, under the situation of battery electric quantity deficiency, and the bluetooth keyboard job insecurity, even can not work; In the more serious occasion of air interference, there is the risk of cisco unity malfunction in bluetooth keyboard.
Summary of the invention
The objective of the invention is to be to overcome above-mentioned defective, a kind of Wireless Keyboard of reliable use is provided: wire and wireless universal blue tooth keyboard.
A kind of Apparatus and method for of wire and wireless universal blue tooth keypad function of realizing of the present invention realizes that by the following technical solutions described equipment comprises:
Bluetooth module, integrated baseband processor and wireless transmitter can realize that baseband processor wherein has USB interface and keyboard scanning circuit to the control of link manager, baseband controller, wireless transceiver and LMP Link Manager Protocol functional module;
Antenna is used for reception and transmission to wireless signal, and is connected with bluetooth radio;
Keyboard comprises button and corresponding indicator light;
Battery is used for the power supply of entire equipment.
Described method comprises:
(a) when being inserted with cable that main equipment links to each other in the USB interface, the bluetooth correlation function of bluetooth module is under an embargo, and bluetooth module only uses as keyboard scanning circuit, and at this moment, bluetooth keyboard is USB man-machine interface (HID) equipment of a standard;
(b) when not being inserted with in the USB interface with cable that main equipment links to each other, enable the bluetooth correlation function of bluetooth module, keyboard scanning circuit is worked simultaneously, and at this moment, bluetooth keyboard is bluetooth man-machine interface (HID) equipment of a standard.
Wire and wireless universal blue tooth keyboard according to the present invention makes that the user can be such as occasion that bluetooth keyboard can not normally use such as dead battery, air interference be serious, by inserting the USB cable, make bluetooth keyboard become wired keyboard, thereby greatly strengthened the availability of bluetooth keyboard.
Description of drawings
By describing the preferred embodiments of the present invention in detail, will help to understand objects and advantages of the present invention by accompanying drawing.Wherein:
Fig. 1 is the hardware block diagram of wire and wireless universal blue tooth keyboard;
Fig. 2 is the functional block diagram of wire and wireless universal blue tooth keyboard;
Fig. 3 explains when being inserted with cable that main equipment links to each other in wire and wireless universal blue tooth keyboard USB interface, the workflow diagram of this keyboard;
Fig. 4 explains when not being inserted with cable that main equipment links to each other in wire and wireless universal blue tooth keyboard USB interface, the workflow diagram of this keyboard.
Specific embodiment
Fig. 1 is the hardware block diagram of wire and wireless universal blue tooth keyboard.As shown in Figure 1, wire and wireless universal blue tooth keyboard 100 is made up of some hardware cells.Wherein, bluetooth module 120 is integrated baseband processor and wireless transmitter can be realized the control to link manager, baseband controller, wireless transceiver and LMP Link Manager Protocol functional module.Baseband processor 121 has USB interface and keyboard scanning circuit, links to each other with keyboard 110 and USB socket 140 respectively.Antenna 130 is used for reception and transmission to wireless signal, and is connected with bluetooth radio 122.Keyboard 110 comprises button and corresponding indicator light etc.Battery 150 is used for the power supply of entire equipment.
Fig. 2 is the functional block diagram of wire and wireless universal blue tooth keyboard.As shown in Figure 2, wire and wireless universal blue tooth keyboard 200 is made up of plurality of function modules.Wherein, the wire/wireless bluetooth keyboard is used 210 and is responsible for coordinating the mode switch of wire/wireless, thereby the various functions of keyboard are provided to the user; When equipment was in wireless mode, the wire/wireless bluetooth keyboard was used 210 needed control informations and is provided by SDP (service discovery protocol) 270 and HID (bluetooth human interface applications framework) 220.The variety of protocol on standard communication protocol L2CAP (logical connection control and adapting protocol) 230 multiplexed upper stratas.HCI (HCI) driver 280 allows transmission standard HCI order and receives the response that causes thus; And receive and send data by L2CAP 230.USB driving 295 is used to realize the related protocol of USB human interface device side, and itself and wire/wireless bluetooth keyboard are used 210 and carried out information interaction.Keyboard scan 296 is used for the actions such as pressing, upspring of keyboard scan.Link manager 290 is responsible for receiving order and the data that upper layer module sends, and the result is returned to the upper strata.Link manager 290 is finished function corresponding by baseband controller 250 and wireless transmitter 260.LMP Link Manager Protocol 240 is used for the intercommunication mutually between the different Bluetooth devices link manager.Baseband controller 250 is according to the command operation of link manager 290.Wireless transmitter 260 wirelessly sends and receives information according to the specification of standard.
Fig. 3 explains the workflow diagram of wire and wireless universal blue tooth keyboard when the key action is arranged.As shown in Figure 3, at first, the keyboard scan program has detected key be pressed or upspring (S110), then, need to judge the residing state of keyboard (S120) this moment, if be in cable status (digital dish by USB cable link to each other) with main equipment, then pass through the USB cable, the key assignments that scans is sent to main equipment (S130) with the form of USB HID agreement; If be in the bluetooth connection status,, the key assignments that scans is sent to main equipment (S140) with the form of bluetooth HID agreement then by bluetooth channel.
Fig. 4 explains when the cable that USB interface plugs and unplugs with main equipment links to each other of wire and wireless universal blue tooth keyboard, the workflow diagram of this keyboard.As shown in Figure 4, at first, the USB driver detects the USB socket change (S210) has taken place, then, need to judge the state (S220) of USB socket,, then need to start the Bluetooth function of bluetooth module if USB cable is pulled out, initiate the request of bluetooth link setup to the main equipment of appointment, set up bluetooth and connect (S230).Otherwise the Bluetooth function of bluetooth disable module enables usb driver.
Though the present invention illustrates and describes with reference to its preferred embodiment, but will be understood by those skilled in the art that, under the situation of the spirit and scope of the present invention that do not break away from the appended claims and limited, can carry out the various changes of form and details.
Claims (2)
1, a kind of equipment of realizing wire and wireless universal blue tooth keypad function, it is characterized in that: described equipment comprises:
Bluetooth module (120), integrated baseband processor (121) and wireless transmitter (122), can realize that baseband processor wherein (121) has USB interface (140) and keyboard scanning circuit to the control of link manager (290), baseband controller (250), wireless transceiver (260) and LMP Link Manager Protocol functional module (240);
Antenna (130) is used for reception and transmission to wireless signal, and is connected with bluetooth radio (122);
Keyboard (110) comprises button and corresponding indicator light;
Battery (150) is used for the power supply of entire equipment.
2, a kind of method that realizes wire and wireless universal blue tooth keypad function, it is characterized in that: described method comprises:
(a) when being inserted with cable that main equipment links to each other in the USB interface, the bluetooth of bluetooth module is relevant
Function is under an embargo, and bluetooth module only uses as keyboard scanning circuit, at this moment, and bluetooth keyboard
Be USB man-machine interface (HID) equipment of a standard;
(b) when not being inserted with in the USB interface with cable that main equipment links to each other, the indigo plant of enabling bluetooth module
The tooth correlation function, keyboard scanning circuit is worked simultaneously, and at this moment, bluetooth keyboard is a standard
Bluetooth man-machine interface (HID) equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021599548A CN1165117C (en) | 2002-12-31 | 2002-12-31 | Method for realizing wire-wireless general-use blue tooth keyboard function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021599548A CN1165117C (en) | 2002-12-31 | 2002-12-31 | Method for realizing wire-wireless general-use blue tooth keyboard function |
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| Publication Number | Publication Date |
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| CN1423428A true CN1423428A (en) | 2003-06-11 |
| CN1165117C CN1165117C (en) | 2004-09-01 |
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| CNB021599548A Expired - Fee Related CN1165117C (en) | 2002-12-31 | 2002-12-31 | Method for realizing wire-wireless general-use blue tooth keyboard function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433755C (en) * | 2004-10-20 | 2008-11-12 | 乐金电子(中国)研究开发中心有限公司 | Integrated device of corded phone/cordless phone and mobile communication terminal |
| CN101772945A (en) * | 2007-07-16 | 2010-07-07 | 高通股份有限公司 | Methods and systems personalizing and branding mobile device keypads |
| CN102520801A (en) * | 2011-11-11 | 2012-06-27 | 深圳市多精彩电子科技有限公司 | Keyboard with double interface modules |
| CN104335497A (en) * | 2012-06-04 | 2015-02-04 | 高通股份有限公司 | Automatic connection of bluetooth human interface devices |
| CN107015938A (en) * | 2017-05-22 | 2017-08-04 | 朱昊宇 | A kind of bluetooth USB device and its circuit |
-
2002
- 2002-12-31 CN CNB021599548A patent/CN1165117C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433755C (en) * | 2004-10-20 | 2008-11-12 | 乐金电子(中国)研究开发中心有限公司 | Integrated device of corded phone/cordless phone and mobile communication terminal |
| CN101772945A (en) * | 2007-07-16 | 2010-07-07 | 高通股份有限公司 | Methods and systems personalizing and branding mobile device keypads |
| CN102520801A (en) * | 2011-11-11 | 2012-06-27 | 深圳市多精彩电子科技有限公司 | Keyboard with double interface modules |
| CN104335497A (en) * | 2012-06-04 | 2015-02-04 | 高通股份有限公司 | Automatic connection of bluetooth human interface devices |
| CN104335497B (en) * | 2012-06-04 | 2017-02-22 | 高通股份有限公司 | Method and device for automatic connection of bluetooth human interface devices |
| US9860680B2 (en) | 2012-06-04 | 2018-01-02 | Qualcomm Incorporated | Automatic connection of bluetooth human interface devices |
| CN107015938A (en) * | 2017-05-22 | 2017-08-04 | 朱昊宇 | A kind of bluetooth USB device and its circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1165117C (en) | 2004-09-01 |
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