CN1349149A - Hand writing input method and device adopting suspersonic wave positioning - Google Patents
Hand writing input method and device adopting suspersonic wave positioning Download PDFInfo
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- CN1349149A CN1349149A CN 01144415 CN01144415A CN1349149A CN 1349149 A CN1349149 A CN 1349149A CN 01144415 CN01144415 CN 01144415 CN 01144415 A CN01144415 A CN 01144415A CN 1349149 A CN1349149 A CN 1349149A
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Abstract
The invention relates to an input method of handwriting and device by using ultrasonic positioning. The mesuring reference object emits ultrasonic wave. The measured object or measured pen emits synchronization signal to tell reference object. The location of measured object or measured pen are calculated out based on the transmitting time of ultrasonic wave between the measuring reference object and the measured object. The method and relevant device can be used in computer PDA and mobile telephone, without need of complex circuir on the input pen.
Description
Technical field:
The present invention relates to a kind of ultrasound wave hand-written inputting method and device thereof.
Background technology:
It is to utilize the aerial low propagation speed of ultrasound wave that ultrasound wave is used for hand input device, and the principle of employing supersonic sounding realizes.Ultrasound wave is identical with the velocity of propagation of sound wave, and the aerial velocity of propagation of sound wave is approximately 340 metre per second (m/s)s.Just can determine that according to the timing that sound wave is propagated testee arrives the distance of test point in air.Widespread use utilizes the ultrasonic measurement distance and surveys thing in many commercial measurements, and a lot of hand input devices also utilize the ultrasonic locating person's handwriting.The hand input device that for example Chinese utility model patent 98248471.2 and Israel PEGASUS company produce.
Referring to Fig. 1 measuring principle synoptic diagram, the principle of work of this class device is: the ultrasound transmitting transducer (102) that two known spacings are installed on the fixation measuring device, be set at S1 and S2, regularly launch ultrasonic signal respectively by measurement mechanism control, for example S1 launches ultrasonic signal earlier, after tested pen (101) receives ultrasonic signal, send the synchronizing signal of receiving signal by infrared ray immediately, inform stationary installation.Stationary installation is returned an infrared received signal learning that controlling S2 after tested pen has been received signal launches ultrasonic signal again after tested pen is received again, and so far a complete test period finishes.Measurement mechanism can return the time of receiving ultrasonic signal according to testee at this moment, and (the aerial velocity of propagation of infrared ray is hyperacoustic 1,000,000 times, its transmission time can ignore), learn that between testee and Measuring Object two are apart from FS1 (103) and FS2 (104), according to known S1 and S2 spacing distance, just can learn three length.Tested pen just in time constitutes a triangle with S1 and two test points of S2, because these leg-of-mutton three length of sides just are known parameters, the relative position of two transmitting transducers of point of fixity also is known parameter simultaneously, can obtain the relative coordinate of tested pen.
Because it all is to utilize testee emission ultrasound wave that present ultrasound wave is used for the device of input coordinate, the method that fixing test point received signal detects, so emitter circuit structure more complicated is installed on the tested device, need three parts and form:
1. timing circuit.Be used to control time emission ultrasonic signal at regular intervals.
2. ultrasonic transmit circuit.Can produce higher ultrasonic exciting voltage and promote ultrasonic transducer work, the peak to peak value of this voltage is about 400 volts.
3. can send a synchronous signal device.Be used to inform that measurement mechanism launches hyperacoustic zero-time, this signal generally is to use infrared ray, electromagnetic wave, wired mode to realize.
Summary of the invention:
The objective of the invention is by the testee received ultrasonic signal, design makes the circuit of testee become very simple like this, no longer need timing circuit and the hyperacoustic high voltage of emission to promote circuit, only need the emission of ultrasonic reception and synchronizing signal, can simplify circuit and avoid debugging.
Content of the present invention and technical scheme are as follows:
The feature of this method is in tested pen a ultrasound wave to be installed to receive detecting device and an infrared transmitter.Therefore have only two parts circuit in the testee:
1. the ultrasound wave receiving circuit is used for received ultrasonic signal;
2. the circuit of infrared ray or other emission synchronizing signals.Be used to inform that measuring point receives hyperacoustic time.
Referring to tested theory diagram of Fig. 2: because ultrasound wave receives sensors work at following electric current that needs seldom of small-signal state, and writing pencil is to start working after starting to write, so is consumed power not when not writing.This is that when starting to write, the pressure that nib produces can make switch connection because pressure switch is housed in writing pencil, and ultrasound wave receives head (201), ultrasonic detector (202) is started working, and when nib lifted, switch cut out, and quit work.Infrared emission tube (203) is transmitted by the control of ultrasonic detector (202), only launches the narrow pulse signal of several microseconds, hardly consume electric power.Adopt the battery or the sun power rechargeable battery of a less energy promptly can work.
Referring to Fig. 3 hand input device fixed part theory diagram: except tested pen, ultrasonic signal is finished regularly emission by stationary installation.This emitter is a fixed object, can weight and power consumption not had strict requirement by computing equipment power supply or the powered battery that is attached thereto, and its duty is by a CPU control operation (304).
This CPU mainly finishes following work:
1. the emission control of sound wave.When beginning handwriting input operation beginning, CPU control ultrasound transmitting transducer S1 and S2 (102) launch ultrasonic signal in turn;
2. clocking capability.After sending ultrasonic signal, begin to enter time status, when receiving the signal that tested pen returns, stop timing;
3. computing function.According to the Measuring Time parameter that obtains, calculate the relative coordinate of testee;
4. communication function.Give computer with tested the relative coordinate that obtains or mobile phone is used for input.Above-mentioned functions can realize with the method for software by CPU, become better simply mode technically.
Advantage of the present invention and good effect are:
Compare with the apparatus and method of having announced that are used for ultrasonic locating and input,
1. not to launch ultrasound wave, avoided complicated timing circuit is set on pen, receive ultrasonic circuit and infrared transmitter, simplified circuit and transfer on pen, only being provided with by tested pen.
2. this method has realized the ultrasound wave hand input device more easily, is convenient to produce and reduce the cost of tested pen.The circuit volume reduces simultaneously, and power consumption reduces, and is fit to the installation in the pen.
Description of drawings:
Fig. 1 is the measuring principle synoptic diagram;
Fig. 2 is a tested theory diagram;
Fig. 3 is the hand input device theory diagram;
Among the figure, the tested pen of 101--, 102--ultrasound transmitting transducer, 103--FS1,104--FS2;
The 201--ultrasound wave receives head; The 202--ultrasonic detector; The 203--infrared transmitting tube;
301--S1,302--S2,303--ultrasonic transmit circuit, 304--CPU, 305--program and data-carrier store, 306--communicating circuit, 307--feed circuit, 308--infrared detector, 309--infrared receiving tube.
Embodiment:
The location input measurement that adopts these apparatus and method to realize, its implementation process is: at first controlled S1 (102) the emission ultrasonic signal of one of two ultrasound transmitting transducers (303) by the CPU (304) of stationary installation, by having ultrasonic detector (202) received ultrasonic signal that ultrasound wave receives head (201) on the testee (pen) (101); The last infrared emission tube (203) of testee (pen) sends synchronizing signal and informs stationary installation then; The CPU of stationary installation (304) control S2 (102) continues to launch ultrasonic signal, and testee is received ultrasonic signal once more, and testee (pen) sends second synchronizing signal and informs stationary installation then at once; More than two the step finish a test period.After testee receives ultrasonic signal, twice with the infrared ray measuring point on the infrared ray notice stationary installation, the infrared detector (308) that promptly has infrared receiving tube (309) is calculated by the position of this object by program and data-carrier store (305) by this twice timing.The above cycle repeats, and the position of testee is followed the tracks of continuously.In addition, this device also is equipped with communicating circuit (306), feed circuit (307) to wait other circuit.
Claims (12)
1. hand-written inputting method that adopts ultrasonic locating, speed according to ultrasonic propagation, calculate the position of testee or tested pen, it is characterized in that by witness mark object emission ultrasound wave, testee or tested received ultrasonic signal, testee or tested pen send synchronizing signal and inform stationary installation then, with the Time Calculation testee of basis ultrasonic propagation therebetween or tested position.
2. ultrasonic locating hand-written inputting method according to claim 1 is characterized in that by witness mark object emission ultrasonic signal, and testee receives and sends synchronizing signal behind the ultrasonic signal and inform Reference; Reference continues to launch ultrasonic signal, and testee is received ultrasonic signal once more, and testee sends second synchronizing signal and informs Reference then at once; Calculate distance between testee and the witness mark object by this twice chronoscope, thereby determine the position of testee.
3. ultrasonic locating hand-written inputting method according to claim 2 is characterized in that the witness mark object regularly launches ultrasonic signal; Testee receives and sends synchronizing signal behind the ultrasonic signal and inform Reference; Reference continues to launch ultrasonic signal, and testee is received ultrasonic signal once more, and testee sends second synchronizing signal and informs stationary installation then at once; More than two the step finish a test period; The above-mentioned cycle repeats, and the position of testee is followed the tracks of continuously.
4. according to claim 1,2 or 3 described ultrasonic locating hand-written inputting methods, it is characterized in that Reference is a stationary installation, at first send ultrasonic signal by test point on it, this device receives the synchronizing signal that testee sends and carries out timing then; And then send ultrasonic signal once more by another test point on it, this device receives second synchronizing signal that testee sends once more and carries out the timing second time then; Obtain the position of testee according to the distance between twice timing and two test points.
5. according to claim 1,2,3 or 4 described ultrasonic locating hand-written inputting methods, it is characterized in that the aerial velocity of propagation of synchronizing signal is more a lot of than ultrasonic wave height, the transmission time, relative ultrasound wave can be ignored.
6. according to claim 1,2,3,4 or 5 described ultrasonic locating hand-written inputting methods, it is characterized in that synchronizing signal is an infrared signal,
7. hand input device that adopts ultrasonic locating, comprise Reference, testee or tested pen, it is characterized in that: ultrasonic transmitter, infrared receiver and control section as two known spacings of test point are installed on the Reference; Have only two parts circuit in the testee, the one, ultrasound wave receiving circuit or ultrasonic detector, the 2nd, the radiating portion of infrared ray or other synchronizing signals, it receives hyperacoustic time to be used to inform Reference.
8. ultrasonic locating hand input device according to claim 7 is characterized in that in testee or the tested pen pressure switch being housed, and when starting to write, the pressure that nib produces can make switch connection, and ultrasonic detector is started working; When nib lifted, switch cut out, and quit work.
9. according to claim 7 or 8 described ultrasonic locating hand input devices, it is characterized in that the infrared transmitter in testee or the tested pen launches synchronizing signal after ultrasonic receiver receives ultrasound wave, signal is the narrow pulse signal of several microseconds.
10. according to claim 7 or 9 described ultrasonic locating hand input devices, it is characterized in that the infrared transmitter in testee or the tested pen adopts the battery or the sun power rechargeable battery of a less energy to carry out work.
11. ultrasonic locating hand input device according to claim 7 is characterized in that the control on the Reference is undertaken by a CPU.
12. ultrasonic locating hand input device according to claim 11 is characterized in that the cpu function on the Reference comprises control, timing, calculating and communication; Two test point emissions of its control ultrasonic signal; Carry out timing between the reception to the emission of ultrasonic signal and infrared signal; Go out the relative coordinate of testee according to the Measuring Time calculation of parameter that obtains; And tested the relative coordinate that will obtain given computer or mobile phone is used for input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144415 CN1349149A (en) | 2001-12-17 | 2001-12-17 | Hand writing input method and device adopting suspersonic wave positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144415 CN1349149A (en) | 2001-12-17 | 2001-12-17 | Hand writing input method and device adopting suspersonic wave positioning |
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| Publication Number | Publication Date |
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| CN1349149A true CN1349149A (en) | 2002-05-15 |
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| CN 01144415 Pending CN1349149A (en) | 2001-12-17 | 2001-12-17 | Hand writing input method and device adopting suspersonic wave positioning |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100416622C (en) * | 2003-03-15 | 2008-09-03 | 杨士清 | Supersonic positioned interactive book system and method for calculating location of pointed unit by supersonic |
| CN101813977A (en) * | 2010-03-26 | 2010-08-25 | 北京物资学院 | Motion capture method and system based on ultrasonic waves |
| CN102207801A (en) * | 2011-04-15 | 2011-10-05 | 深圳市华测检测技术股份有限公司 | Three-dimensional hand-writing input device and hand-writing input method |
| CN104020446A (en) * | 2014-06-13 | 2014-09-03 | 上海申磬产业有限公司 | Autonomous navigation and positioning system in intelligent nursing bed and positioning and navigation method |
| CN105786222A (en) * | 2015-12-24 | 2016-07-20 | 广东小天才科技有限公司 | Ultrasonic induction writing method and system, intelligent terminal and writing end |
| CN108399813A (en) * | 2018-05-04 | 2018-08-14 | 广东小天才科技有限公司 | Robot-based learning tutoring method and system, robot and handwriting equipment |
| US10452157B2 (en) | 2014-10-07 | 2019-10-22 | Xyz Interactive Technologies Inc. | Device and method for orientation and positioning |
-
2001
- 2001-12-17 CN CN 01144415 patent/CN1349149A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100416622C (en) * | 2003-03-15 | 2008-09-03 | 杨士清 | Supersonic positioned interactive book system and method for calculating location of pointed unit by supersonic |
| CN101813977A (en) * | 2010-03-26 | 2010-08-25 | 北京物资学院 | Motion capture method and system based on ultrasonic waves |
| CN101813977B (en) * | 2010-03-26 | 2012-08-22 | 北京物资学院 | Motion capture method and system based on ultrasonic waves |
| CN102207801A (en) * | 2011-04-15 | 2011-10-05 | 深圳市华测检测技术股份有限公司 | Three-dimensional hand-writing input device and hand-writing input method |
| CN104020446A (en) * | 2014-06-13 | 2014-09-03 | 上海申磬产业有限公司 | Autonomous navigation and positioning system in intelligent nursing bed and positioning and navigation method |
| US10452157B2 (en) | 2014-10-07 | 2019-10-22 | Xyz Interactive Technologies Inc. | Device and method for orientation and positioning |
| US10996768B2 (en) | 2014-10-07 | 2021-05-04 | Xyz Interactive Technologies Inc. | Device and method for orientation and positioning |
| CN105786222A (en) * | 2015-12-24 | 2016-07-20 | 广东小天才科技有限公司 | Ultrasonic induction writing method and system, intelligent terminal and writing end |
| CN108399813A (en) * | 2018-05-04 | 2018-08-14 | 广东小天才科技有限公司 | Robot-based learning tutoring method and system, robot and handwriting equipment |
| CN108399813B (en) * | 2018-05-04 | 2021-06-01 | 广东小天才科技有限公司 | Robot-based learning tutoring method and system, robot and handwriting equipment |
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