CN102253774A - Information input device and method with function of eliminating mutual interference among sensing signals - Google Patents
Information input device and method with function of eliminating mutual interference among sensing signals Download PDFInfo
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- CN102253774A CN102253774A CN2010101856228A CN201010185622A CN102253774A CN 102253774 A CN102253774 A CN 102253774A CN 2010101856228 A CN2010101856228 A CN 2010101856228A CN 201010185622 A CN201010185622 A CN 201010185622A CN 102253774 A CN102253774 A CN 102253774A
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Abstract
The invention discloses an information input device and method with function of eliminating mutual interference among sensing signals, belonging to the field of computer peripheral equipment. According to the method disclosed by the invention, a capacitive touch control module is closed and an electromagnetic sensing module is started for performing electromagnetic scanning, or the electromagnetic sensing module is closed and the capacitive touch control module is started for performing capacitive scanning, so that the electromagnetic scanning and the capacitive scanning are performed in a time-division scanning and time-division working manner, thus, the problem of the mutual interference between electromagnetic sensing signals and capacitive touch signals is completely solved. According to the device disclosed by the invention, handwritten data information and hand touch data information are recognized by adopting a manner of combining an electromagnetic board and a capacitive touch control board, the positioning accuracy of the information input device in which an electromagnetic sensing technology and a capacitive touch control technology are applied is improved in the time-division scanning, and the touch control operation by a pen and fingers is realized on the same information input device.
Description
Technical field
The invention belongs to field of computer peripheral, relate to a kind of message input device that possesses electromagnetism touch-control input and capacitance touching control input function, relate in particular to and a kind ofly can eliminate electromagnetic signal and the capacitance signal message input device and the method for mutual interference mutually.
Background technology
The electromagnetic type coordinate entering device is realized the information input of computing machine as a kind of computer entry device by handwriting input by magnetic board and special electromagnetic pen.When time writer was write in the effective coverage of magnetic board, magnetic board obtained trace information and the pressure size information that time writer is write, and sent messaging device such as computing machine to.The electromagnetic type coordinate entering device can be used for the aspects such as input of circuit design, CAD design, graphic designs, free drawing and text and data, has advantages such as accuracy of identification height, accurate positioning.Especially wireless and passive electromagnetic type input technology because of the bearing accuracy height, can obtain an angle of inclination and pressure information, not influence advantages such as screen display quality, extremely market favor is widely used in equipment such as Tablet PC (handwritten computer), plotting sheet, handwriting pad, e-book.But this electromagnetic type input technology can only use time writer touch-control input on magnetic board, and in a single day time writer is lost or damaged, and just can't carry out input operation, and can not use the finger touch input, and dirigibility and convenience are relatively poor.
The capacitance touch device adopts the capacitive sensing technology, by finger touch control operation action such as realization information input on the capacitance touch screen of capacitance touch device, can provide large-sized display screen for the handheld device of small size.And the reaching its maturity of multiple point touching technology, make the user to operate simultaneously in a plurality of positions of a touch screen, realize that hommization controls, make a lot of interesting operations become possibility.
The touch screen of prior art both can have been accomplished the accurate location of electromagnetic type handwriting input in conjunction with electromagnetic induction and capacitance touching control technology, also can realize capacitance touching control input location by finger touch.But, electromagnetic induction technology and capacitance touching control technology all are to finish the input of electromagnetic signal or capacitance signal by scanning yoke, the touch screen of using these two kinds of technology certainly exists the mutual interference mutually of electromagnetic signal and capacitance signal, combines and carries out the accuracy of coordinate setting and operation thereby influence the input of electromagnetic type handwriting input and capacitance touching control.
Summary of the invention
Technical matters to be solved by this invention provides a kind of message input device of using electromagnetic induction technology and capacitance touching control technology, the mode that adopts magnetic board to combine with capacitance touch control board realizes the identification of hand-written data information and the identification of hand touch data information, efficiently solves the mutual interference problem of electromagnetic induction signal and capacitance touch signal by the mode of timesharing scanning.
The technical scheme that technical solution problem of the present invention is adopted has provided a kind of message input device of eliminating the mutual interference function of induced signal that possesses, comprise the electromagnetic induction plate that is used to produce electromagnetic induction signal and locatees the time writer position of touch, be used for the finger sensing touching signals and locate the capacitance touch control board of finger touch position, sensing finger touch-control incident, described capacitance touch control board is close to the top configuration of electromagnetic induction plate, the top configuration upper casing of capacitance touch control board, the below configuration drain pan of electromagnetic induction plate.
Also comprise the main control module, the main control module sends the data message that obtains to external information processing equipment by communication interface module; Be provided with electromagnetic induction module in the electromagnetic induction plate, be provided with the capacitance touching control module in the described capacitance touch control board, electromagnetic induction module and capacitance touching control module are electrically connected with the main control module by serial communication SCI interface respectively.
Also comprise handover module, described electromagnetic induction module is connected with the main control module by handover module respectively with the capacitance touching control module.
Also comprise the main control module and, be electrically connected with the main control module that the main control module sends the data message that obtains to external information processing equipment by communication interface module from control module from control module; Be provided with electromagnetic induction module in the described electromagnetic induction plate, electromagnetic induction module is electrically connected with the main control module by serial communication SCI interface; Be provided with the capacitance touching control module in the described capacitance touch control board, the capacitance touching control module by serial communication SCI interface be electrically connected from control module.
The present invention also provides a kind of method that possesses the message input device realization information input of eliminating the mutual interference function of induced signal, comprises following steps:
Step 1: the main control module is closed the capacitance touching control module, starts electromagnetic induction module;
Step 2: the electromagnetic induction coil of arranging in the electromagnetic induction module scanning electromagnetic induction plate detects the trace information that time writer obtains time writer, and execution in step 5, if electromagnetic induction module does not detect the time of time writer information and surpasses the time period of setting, then execution in step 3;
Step 3: the main control module is closed electromagnetic induction module, starts the capacitance touching control module;
Step 4: the coil of arranging in the capacitance touching control module scanning capacitance Trackpad detects the information that finger obtains finger touch, and execution in step 5, does not surpass the setting-up time section if the capacitance touching control module detects the time of finger touch information, then returns step 1;
Step 5: the main control module is obtained the information of the trace information or the finger touch of time writer, sends external information processing equipment to by communication interface module.
The present invention also provides the method for another kind of realization information input, comprises following steps:
Step 1: the main control module is closed electromagnetic induction module, starts the capacitance touching control module;
Step 2: the coil of arranging in the capacitance touching control module scanning capacitance Trackpad detects the information that finger obtains finger touch, and execution in step 5, does not surpass the setting-up time section if the capacitance touching control module detects the time of finger touch information, and then execution in step 3;
Step 3: the main control module is closed the capacitance touching control module, starts electromagnetic induction module;
Step 4: the electromagnetic induction coil of arranging in the electromagnetic induction module scanning electromagnetic induction plate detects the trace information that time writer obtains time writer, and execution in step 5, if electromagnetic induction module does not detect the time of time writer information and surpasses the time period of setting, then return step 1;
Step 5: the main control module is obtained the information of the trace information or the finger touch of time writer, sends external information processing equipment to by communication interface module.
The invention has the beneficial effects as follows, mode by timesharing scanning electromagnetic induction coil and finger touch, efficiently solve electromagnetic induction signal and the capacitance touching control signal problem of mutual interference mutually, thereby improved the accurate location of using the message input device of electromagnetic induction technology and capacitance touching control technology, realized pen and the touch control operation of finger on same message input device.
Description of drawings
Fig. 1 is the structured flowchart of message input device provided by the invention;
Fig. 2 is the theory diagram of message input device one embodiment provided by the invention;
Fig. 3 is the theory diagram of another embodiment of message input device provided by the invention;
Fig. 4 is the method flow diagram of message input device realization information input provided by the invention.
Embodiment
Describe the present invention in detail below in conjunction with embodiment and accompanying drawing.Message input device provided by the invention is devices such as numerical digit plate, touch screen.
Be illustrated in figure 1 as the structured flowchart of apparatus of the present invention, message input device provided by the invention, comprise the electromagnetic induction plate 3 that is used to produce electromagnetic induction signal and locatees the time writer position of touch, be used for the finger sensing touching signals and locate the capacitance touch control board 2 of finger touch position, sensing finger touch-control incident, this capacitance touch control board 2 is close to the top configuration of electromagnetic induction plate 3, the top configuration upper casing 1 of capacitance touch control board 2, the below configuration drain pan 4 of electromagnetic induction plate 3.Therefore, drain pan 4, electromagnetic induction plate 3, capacitance touch control board 2 and upper casing 1 overlay configuration constitute message input device of the present invention.
Be illustrated in figure 2 as the theory diagram of apparatus of the present invention one embodiment, be provided with electromagnetic induction module in the electromagnetic induction plate, be provided with the capacitance touching control module in the capacitance touch control board.Electromagnetic induction module is electrically connected with the main control module of message input device by serial communication SCI interface.Main control module controls electromagnetic induction module is in running order, electromagnetic induction module is by scanning its interior electromagnetic induction coil induced electricity magnetic pen of arranging near shell or the touch-control incident on shell, and the trace information of acquisition time writer touch-control, the trace information after handling is sent to the main control module.The capacitance touching control module is electrically connected with the main control module of message input device by another serial communication SCI interface.Main control module controls capacitance touching control module is in running order, and the capacitance touching control module sends to the main control module by the touch information of the coil-induced of layout in the scanning capacitance Trackpad and acquisition finger with the touch information after handling.The main control module is carried out data by communication interface module and external information processing equipment and is transmitted, and time writer touch information and finger touch information are sent to external information processing equipments such as computing machine.The capacitance touching control module can also being electrically connected from control module by serial communication SCI interface and message input device, be electrically connected with the main control module from control module, and according to the in running order or closed condition of instruction control capacitance touching control module of main control module.
Be illustrated in figure 3 as the theory diagram of another embodiment of apparatus of the present invention, different with a last embodiment is that control module is closed electromagnetic induction module unlatching capacitance touching control module or closed capacitance touching control module unlatching electromagnetic induction module by the change-over switch module.
This message input device is owing to use electromagnetic induction technology and capacitance touching control technology, time writer and the operation of finger on same device have been realized, but can produce the mutual interference problem of electromagnetic induction signal and capacitance signal simultaneously, influence touch-control locating accuracy and accuracy.For solving electromagnetic induction signal and the capacitance signal problem of mutual interference mutually, the present invention proposes a kind of timesharing method for scanning, open electromagnetic induction module by the main control module and close the capacitance touch module, or open the capacitance touch module and close the capacitance touch module, make electromagnetic induction module and capacitance touch module time-sharing work, timesharing scanning, thoroughly solved electromagnetic signal and the capacitance signal problem of mutual interference mutually.
Be illustrated in figure 4 as the method flow diagram of apparatus of the present invention realization information input.It is preferential that the method for this embodiment is set electromagnetic induction, comprises following steps:
Step 1: the main control module is closed the capacitance touching control module, starts electromagnetic induction module;
Step 2: electromagnetic induction module scanning electromagnetic induction coil detects the trace information that time writer obtains time writer, and execution in step 5, does not surpass the time period of setting if electromagnetic induction module detects the time of time writer information, and then execution in step 3;
Step 3: the main control module is closed electromagnetic induction module, starts the capacitance touching control module;
Step 4: the coil of arranging in the capacitance touching control module scanning capacitance Trackpad detects the information that finger obtains finger touch, and execution in step 5, does not surpass the setting-up time section if the capacitance touching control module detects the time of finger touch information, then returns step 1;
Step 5: the main control module is obtained the information of the trace information or the finger touch of time writer, sends external information processing equipment to by communication interface module.
Close or the mode that starts capacitance touching control module or electromagnetic induction module has two kinds in above-mentioned main control module: the one, close or start capacitance touching control module or electromagnetic induction module by serial communication SCI interface, the 2nd, send to change-over switch module by control module and to close or enabled instruction, change-over switch module instructs according to this, carries out the action of closing or start capacitance touching control module or electromagnetic induction module.
In step 2, the message input device of using this method is in the electromagnetic type mode of operation, because the capacitance touching control module is in closed condition, the electromagnetic induction signal that can not disturb the resonance of electromagnetic induction module and time writer to produce, electromagnetic induction module is under the environment that does not have capacitance signal to disturb, detect the input trajectory of time writer, realize the accurate location of time writer.Under this mode of operation, the main control module enters into the circulation that receives the time writer trace information, if electromagnetic induction module detects the time writer drop-out time and surpasses the time period of setting, the information notice main control module that electromagnetic induction module is lost time writer by serial communication SCI interface, the main control module receives and stops after the information that time writer loses and jump out the circulation that receives the time writer trace information, enter step 3 then, close electromagnetic induction module, open the capacitance touching control module, start capacitance touching control scanning.Time period herein can be provided with arbitrarily as required.
In step 4, the message input device of using this method is in the capacitance touching control mode of operation, because electromagnetic induction module is in closed condition, can the scanning of pointing not detected the interference capacitors touch-control module, realize that the capacitance touching control module detects the touch-control locating information of finger under the environment that does not have electromagnetic signal to disturb.
In step 5, communication interface module is a USB interface, and external information processing equipment is a computing machine.
Another embodiment of method of apparatus of the present invention realization information input is that the setting capacitive sensing is preferential, the main control module is closed electromagnetic induction module earlier, start the capacitance touching control module and carry out electric capacity scanning, when no finger touch information surpasses the setting-up time section, the main control module is closed capacitance touching control module startup electromagnetic induction module again and is entered the electromagnetic induction scanning mode, and the main control module enters the cyclic process that receives the time writer trace information simultaneously.
Apparatus and method provided by the invention have thoroughly been eliminated electromagnetic induction signal and the capacitance touching control signal problem of mutual interference mutually, have realized possessing the accurate location of the message input device of input of electromagnetism touch-control and capacitance touching control input pattern for time writer touch-control and finger touch.
Claims (6)
1. one kind possesses the message input device of eliminating the mutual interference function of induced signal, it is characterized in that, comprise the electromagnetic induction plate that is used to produce electromagnetic induction signal and locatees the time writer position of touch, be used for the finger sensing touching signals and locate the capacitance touch control board of finger touch position, sensing finger touch-control incident, described capacitance touch control board is close to the top configuration of electromagnetic induction plate, the top configuration upper casing of capacitance touch control board, the below configuration drain pan of electromagnetic induction plate.
2. message input device according to claim 1 is characterized in that, also comprises the main control module, and the main control module sends the data message that obtains to external information processing equipment by communication interface module; Be provided with electromagnetic induction module in the electromagnetic induction plate, be provided with the capacitance touching control module in the described capacitance touch control board, electromagnetic induction module and capacitance touching control module are electrically connected with the main control module by serial communication SCI interface respectively.
3. message input device according to claim 2 is characterized in that, also comprises handover module, and described electromagnetic induction module is connected with the main control module by handover module respectively with the capacitance touching control module.
4. message input device according to claim 1, it is characterized in that, also comprise the main control module and, be electrically connected with the main control module that the main control module sends the data message that obtains to external information processing equipment by communication interface module from control module from control module; Be provided with electromagnetic induction module in the described electromagnetic induction plate, electromagnetic induction module is electrically connected with the main control module by a serial communication SCI interface; Be provided with the capacitance touching control module in the described capacitance touch control board, the capacitance touching control module is passed through another serial communication SCI interface and is electrically connected from control module.
5. a method that comprises the arbitrary described message input device realization information input of claim 1-4 is characterized in that, comprises following steps:
Step 1: the main control module is closed the capacitance touching control module, starts electromagnetic induction module;
Step 2: the electromagnetic induction coil of arranging in the electromagnetic induction module scanning electromagnetic induction plate detects the trace information that time writer obtains time writer, and execution in step 5; If electromagnetic induction module does not detect the time of time writer information and surpasses the time period of setting, then execution in step 3;
Step 3: the main control module is closed electromagnetic induction module, starts the capacitance touching control module;
Step 4: the coil of arranging in the capacitance touching control module scanning capacitance Trackpad detects the information that finger obtains finger touch, and execution in step 5; If the capacitance touching control module does not detect the time of finger touch information and surpasses the setting-up time section, then return step 1;
Step 5: the main control module is obtained the information of the trace information or the finger touch of time writer, sends external information processing equipment to by communication interface module.
6. a method that comprises the arbitrary described message input device realization information input of claim 1-4 is characterized in that, comprises following steps:
Step 1: the main control module is closed electromagnetic induction module, starts the capacitance touching control module;
Step 2: the coil of arranging in the capacitance touching control module scanning capacitance Trackpad detects the information that finger obtains finger touch, and execution in step 5; If the capacitance touching control module does not detect the time of finger touch information and surpasses the setting-up time section, then execution in step 3;
Step 3: the main control module is closed the capacitance touching control module, starts electromagnetic induction module;
Step 4: the electromagnetic induction coil of arranging in the electromagnetic induction module scanning electromagnetic induction plate detects the trace information that time writer obtains time writer, and execution in step 5; If electromagnetic induction module does not detect the time of time writer information and surpasses the time period of setting, then return step 1;
Step 5: the main control module is obtained the information of the trace information or the finger touch of time writer, sends external information processing equipment to by communication interface module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101856228A CN102253774A (en) | 2010-05-21 | 2010-05-21 | Information input device and method with function of eliminating mutual interference among sensing signals |
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| CN2010101856228A CN102253774A (en) | 2010-05-21 | 2010-05-21 | Information input device and method with function of eliminating mutual interference among sensing signals |
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Cited By (9)
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| CN103176670A (en) * | 2011-12-20 | 2013-06-26 | 纬创资通股份有限公司 | Touch display panel and driving method thereof |
| CN103279273A (en) * | 2013-06-19 | 2013-09-04 | 广州视源电子科技股份有限公司 | Touch switching method of electromagnetic and capacitive dual-mode touch screen |
| CN104142742A (en) * | 2013-05-08 | 2014-11-12 | 航天信息股份有限公司 | Touch electronic equipment and touch mode switching method thereof |
| EP2863294A1 (en) * | 2013-10-15 | 2015-04-22 | LG Display Co., Ltd. | Touch sensing system and display apparatus |
| CN104750304A (en) * | 2013-12-31 | 2015-07-01 | 乐金显示有限公司 | Touch panel |
| CN108388357A (en) * | 2018-03-22 | 2018-08-10 | 江西省创海科技有限公司 | A kind of control system of capacitance plate detection writer be passive electrical magnetic pen |
| CN110377170A (en) * | 2019-07-18 | 2019-10-25 | 汉王科技股份有限公司 | A kind of touch-control handwriting pen and its control method |
| CN112927398A (en) * | 2021-03-04 | 2021-06-08 | 珠海优特物联科技有限公司 | Signal detection method and device, intelligent lock and storage medium |
| CN114327147A (en) * | 2021-12-31 | 2022-04-12 | 北京碧云数创科技有限公司 | Touch screen system |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103176670A (en) * | 2011-12-20 | 2013-06-26 | 纬创资通股份有限公司 | Touch display panel and driving method thereof |
| CN104142742A (en) * | 2013-05-08 | 2014-11-12 | 航天信息股份有限公司 | Touch electronic equipment and touch mode switching method thereof |
| CN104142742B (en) * | 2013-05-08 | 2017-12-19 | 航天信息股份有限公司 | The touch control manner switching method of touch-controlled electronic devices and touch-controlled electronic devices |
| CN103279273A (en) * | 2013-06-19 | 2013-09-04 | 广州视源电子科技股份有限公司 | Touch switching method of electromagnetic and capacitive dual-mode touch screen |
| CN103279273B (en) * | 2013-06-19 | 2016-08-10 | 广州视源电子科技股份有限公司 | Touch switching method of electromagnetic and capacitive dual-mode touch screen |
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| EP2863294A1 (en) * | 2013-10-15 | 2015-04-22 | LG Display Co., Ltd. | Touch sensing system and display apparatus |
| CN104571745A (en) * | 2013-10-15 | 2015-04-29 | 乐金显示有限公司 | Touch sensing system and display apparatus |
| CN104571745B (en) * | 2013-10-15 | 2018-06-01 | 乐金显示有限公司 | Touch-sensing system and display device |
| US9904365B2 (en) | 2013-12-31 | 2018-02-27 | Lg Display Co., Ltd. | Touch panel |
| CN104750304A (en) * | 2013-12-31 | 2015-07-01 | 乐金显示有限公司 | Touch panel |
| CN104750304B (en) * | 2013-12-31 | 2018-09-25 | 乐金显示有限公司 | Touch panel |
| CN108388357A (en) * | 2018-03-22 | 2018-08-10 | 江西省创海科技有限公司 | A kind of control system of capacitance plate detection writer be passive electrical magnetic pen |
| CN110377170A (en) * | 2019-07-18 | 2019-10-25 | 汉王科技股份有限公司 | A kind of touch-control handwriting pen and its control method |
| CN112927398A (en) * | 2021-03-04 | 2021-06-08 | 珠海优特物联科技有限公司 | Signal detection method and device, intelligent lock and storage medium |
| CN114327147A (en) * | 2021-12-31 | 2022-04-12 | 北京碧云数创科技有限公司 | Touch screen system |
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Application publication date: 20111123 |