CN1880966A - Wireless electromagnetic induction system and method for indicating battery level - Google Patents
Wireless electromagnetic induction system and method for indicating battery level Download PDFInfo
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- CN1880966A CN1880966A CNA200510076323XA CN200510076323A CN1880966A CN 1880966 A CN1880966 A CN 1880966A CN A200510076323X A CNA200510076323X A CN A200510076323XA CN 200510076323 A CN200510076323 A CN 200510076323A CN 1880966 A CN1880966 A CN 1880966A
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Abstract
The invention discloses a wireless electromagnet inductive system and method to remind battery quantity, which consists of wireless pen and digital board in connection with host, wherein the wireless pen contains a battery to supply power for wireless pen, a RF vibrating circuit to generate a wireless pen position and conditional RF signal through normal frequency as center frequency and battery voltage detecting device to detect the output voltage of battery; when the output voltage of battery is lower than a marginal value, the battery voltage detecting device makes RF vibrating circuit generate RF signal at alarming frequency as center frequency to display the position and condition of wireless pen; the digital board contains digital RF receiver to receive RF signal from RF vibrating circuit; when the RF vibrating circuit emits center frequency of RF signal as alarming frequency, the digital board informs the host to send an alarming signal of low battery quantity to alarm users.
Description
Technical field
The present invention relates to a kind of wireless electromagnetic induction pen, especially a kind of System and method for of indicating battery electric weight of wireless electromagnetic induction pen.
Background technology
Because the handwriting identification circuit arrangement can replace mouse, and be more suitable in allowing the user, so the improvement of handwriting identification circuit arrangement is the rapid field of development in recent years with artificial input mode input characters and pattern than mouse.Handwriting identification circuit arrangement the earliest, can be considered as is that mouse is replaced with pen, and in order to promote user's operation ease, normally the two replaces mouse with wireless pen and digital board (tablet), and the nib of wireless pen just corresponds to the left button of mouse usually.Year more than though traditional pen type input product has been gone, yet like product all only biases toward in the application of simple functions such as drawing or input in Chinese.
Existing pen type input product normally is a kind of wireless electromagnetic induction Circuits System.Known wireless electromagnetic induction system has comprised usually: the wireless pen (cordlesspen) and a digital board (tablet) that contain a battery.Have a concussion circuit of being formed by inductance capacitance (LC) in the wireless pen, when touching nib, will produce the variation of inductance value, thereby make the concussion frequency also change thereupon.The variation of the big more then inductance value of pressure of collision nib is big more, thereby the variable quantity of concussion frequency is big more, so imposed on the size of pen point pressure as can be known by the size of frequency variation.Two switch keys are also arranged on the side of wireless pen, leave the transmission frequency that produces changes in capacitance in the inductance capacitance oscillator and change pen, change to predict the switch key that the user presses by the difference of frequency by the joint of button.In addition, digital board (tablet) has also comprised elements such as detecting device (detectot), amplifier (amplifier), analogy digital converter.The middle section of the handwriting pad of this quasi-tradition is to be loop inductance, has with the equidistant unidirectional antenna of arranging of array way the two-sided of loop inductance.The main application in this unidirectional antenna loop only is to receive the electromagnetic wave signal that special-purpose wireless pen is launched.When radio magnetic pen launching electromagnetic wave, unidirectional antenna will receive this electromagnetic wave, and utilizes the mode of electromagnetic induction to obtain relevant data via digital board.
No matter the battery of above-mentioned wireless pen is rechargeable or non-rechargeable, and its electric power is all limited.In above-mentioned legacy system, the user has no way of learning this wireless pen number of surplus electric weight still, often when this wireless pen power drain, must check a whole set of wireless electromagnetic induction Circuits System, beginning can learn it is that battery electric quantity exhausts and causes thrashing, not only waste troubleshooting time, more system dependability is lost confidence.Moreover the user possibly can't obtain new battery instantly or in time battery be charged, and causes system to use.In sum, the utmost point needs a kind of System and method for of indicating battery electric weight of wireless electromagnetic induction pen, to solve the above problems.
Summary of the invention
In above-mentioned background of invention, in order to meet the demand of some interests on the industry, the System and method for that the invention provides a kind of indicating battery electric weight of wireless electromagnetic induction pen can be in order to solve the problem that above-mentioned user has no way of learning the still surplus electric weight number of wireless pen.
A purpose of the present invention provides a kind of wireless electromagnetic induction system, and it comprises a wireless pen and a digital board that is connected to a main frame.Wherein, this above-mentioned wireless pen comprise a battery for should wireless pen electric power, a radio frequency oscillating circuit to be producing this wireless pen position of expression that a normal frequency is a centre frequency and the radiofrequency signal of state, and a battery voltage detector is to detect the output voltage of this battery.When the output voltage of this battery was lower than a critical value, it was this wireless pen position of expression of centre frequency and the radiofrequency signal of state that this battery voltage detector makes this radio frequency oscillating circuit produce a warning frequency.This digital board comprises a digital board radio frequency receiver to receive the radiofrequency signal that this radio frequency oscillating circuit is launched, the centre frequency of the radiofrequency signal of being launched when this radio frequency oscillating circuit is during for this warning frequency, and this digital board notifies this main frame to send the low charge alert signal of a battery with the caution user.
Another object of the present invention provides a kind of wireless electromagnetic induction system, and it comprises a wireless pen and a digital board that is connected to a main frame.Wherein, this above-mentioned wireless pen comprise a battery for should wireless pen electric power, a radio frequency oscillating circuit to be producing this wireless pen position of expression that a normal frequency is a centre frequency and the radiofrequency signal of state, and a battery voltage detector is to detect the output voltage of this battery.This radio frequency oscillating circuit is to receive to correspond to these a plurality of warning frequencies and a plurality of caution signals or the special caution signal that are somebody's turn to do special warning frequency, is decided to be these a plurality of warning frequencies or should warns frequency especially with the centre frequency with radiofrequency signal.Between the ceiling voltage of this cell output voltage and no-voltage a plurality of output voltage values that definition corresponds to these a plurality of caution signals.When the actual output voltage of this battery was lower than this a plurality of output voltage values, then to send this special caution signal to this radio frequency oscillating circuit be the radiofrequency signal of centre frequency to produce this special warning frequency to this battery voltage detector.When the actual output voltage of this battery just was higher than a certain value of these a plurality of output voltage values, then to send caution signal to this radio frequency oscillating circuit that corresponds to this value be the radiofrequency signal of centre frequency with the warning frequency that generation corresponds to this value to this battery voltage detector.This digital board comprises a digital board radio frequency receiver to receive the radiofrequency signal that this radio frequency oscillating circuit is launched, it is a little more than this value with the actual output voltage of representing this battery that the centre frequency of the radiofrequency signal of being launched according to this radio frequency oscillating circuit, this digital board notify this main frame to send the low charge alert signal of a battery.
In view of the above, the present invention can utilize the system that is provided to solve the problem that above-mentioned user has no way of learning the still surplus electric weight number of wireless pen.
Description of drawings
But Fig. 1 is the block schematic diagram for a wireless electromagnetic induction system of indicating battery electric weight;
Fig. 2 A is the flow process synoptic diagram that digital pen is shown for Fig. 1;
Fig. 2 B is the flow process synoptic diagram that digital board is shown for Fig. 1;
But Fig. 3 is a block schematic diagram of a wireless electromagnetic induction system of indicating battery electric weight according to another embodiment of the present invention;
Fig. 4 illustrates the various frequencies of wireless electromagnetic induction system and a synoptic diagram of signal for Fig. 3;
Fig. 5 A is the flow process synoptic diagram that digital pen is shown for Fig. 3;
Fig. 5 B is the flow process synoptic diagram that digital board is shown for Fig. 3.
Embodiment
The present invention is at the System and method for of this direction of inquiring into indicating battery electric weight that is a kind of wireless electromagnetic induction pen.In order to understand the present invention up hill and dale, detailed step and composition thereof will be proposed in following description.Apparently, execution of the present invention is not defined in the specific details that skill person had the knack of of wireless electromagnetic induction pen.On the other hand, well-known composition or step are not described in the details, with the restriction of avoiding causing the present invention unnecessary.Preferred embodiment meeting of the present invention is described in detail as follows, yet except these were described in detail, the present invention can also be implemented among other the embodiment widely, and scope of the present invention do not limited, its with after claim be as the criterion.
With reference to shown in Figure 1, but it is the block schematic diagram for a wireless electromagnetic induction system 100 of indicating battery electric weight.This wireless electromagnetic induction system 100 comprises a digital board 120 and a wireless pen 130 that is connected to a main frame 110.Wherein above-mentioned wireless pen 130 comprises a battery 131, a radio frequency oscillating circuit 132, a battery voltage detector 133 of supplying these wireless pen 130 all electric power, connects so far an electric weight emergency warning lamp 134, at least one button 135 and a nib 136 of battery voltage detector 133.This button 135 is to be connected to above-mentioned radio frequency oscillating circuit 132 with nib 136, when this button 135 with/or nib 136 is pressed or when contacting, then above-mentioned radio frequency oscillating circuit 132 will change the frequency that it sends.In view of the above, the frequency that the digital board radio frequency receiver 121 that above-mentioned digital board 120 is comprised can send according to this radio frequency oscillating circuit 132 learns whether this button 135 and nib 136 are pressed or its exposure level.Generally speaking, above-mentioned main frame 110 comprises an operating system 111 and a driver 112 usually with as this wireless electromagnetic induction system 100 software and hardware bridge joint of operating system 111 therewith.
As shown in Figure 1, above-mentioned battery voltage detector 133 is the output voltages that can detect above-mentioned battery 131, and is connected to above-mentioned radio frequency oscillating circuit 132.In an example of present embodiment, the fully loaded electric weight output voltage of this battery 131 is 1.5 volts, and this radio frequency oscillating circuit 132 is to export with a normal frequency, is the normal frequency of 170KHz as centre frequency.If after these battery 131 electric power continue to consume, after then above-mentioned battery voltage detector 133 its output voltages of detection are lower than a critical value, to export a battery low-voltage signal to above-mentioned radio frequency oscillating circuit 132, in view of the above, 132 of this radio frequency oscillating circuits are exported with another warning frequency, are the warning frequency of 120KHz as centre frequency.If still be higher than above-mentioned critical value when these battery 131 voltages, then above-mentioned battery voltage detector 133 outputs one battery normal signal is to above-mentioned radio frequency oscillating circuit 132, and in view of the above, 132 of this radio frequency oscillating circuits are exported with above-mentioned normal frequency.When the frequency that is received when above-mentioned digital board radio frequency receiver 121 changes above-mentioned battery low-voltage signal into by above-mentioned normal frequency, this digital board 120 is promptly notified above-mentioned driver 112, in view of the above, this driver 112 can see through above-mentioned operating system 111 and produce the low charge alert signal of a battery with the caution user.The low charge alert signal of this battery can be sound message, optical signal, jump out flash signal and change color etc. on form, the screen, and the present invention does not limit the form that this battery hangs down the charge alert signal.
In an example of present embodiment, above-mentioned warning frequency is to be lower than normal frequency to reduce consumption of electric.In another example of present embodiment, above-mentioned radio frequency oscillating circuit 132 can comprise a normal radio frequency oscillating circuit 137 being responsible for the above-mentioned normal frequency of emission, with a warning radio frequency oscillating circuit 138 to be responsible for the above-mentioned warning frequency of emission.In view of the above, above-mentioned warning radio frequency oscillating circuit 138 normal radio frequency oscillating circuits 137 are saved electric power.In another example of present embodiment, after above-mentioned battery voltage detector 133 its output voltages of detection were lower than this critical value, this electric weight emergency warning lamp 134 promptly lighted with the warning user.
Please refer to shown in Fig. 2 A, it is the flow process synoptic diagram that digital pen 130 is shown for Fig. 1.When step 210, this battery voltage detector 133 detects the output voltage of this battery 131.Then carry out step 220, this battery voltage detector 133 judges whether this output voltage is lower than above-mentioned critical value.If this output voltage is higher than this critical value, then above-mentioned battery voltage detector 133 is exported this battery normal signal to above-mentioned radio frequency oscillating circuit 132 in step 230; Otherwise above-mentioned battery voltage detector 133 is in the above-mentioned battery low-voltage signal of step 240 output to above-mentioned radio frequency oscillating circuit 132 and make above-mentioned electric weight emergency warning lamp 134 light with the warning user.At last, this digital pen 130 will constantly heavily cover this flow process, continues to get back to step 210.
Please refer to shown in Fig. 2 B, it is the flow process synoptic diagram that digital board 120 is shown for Fig. 1.When step 250, above-mentioned digital board radio frequency receiver 121 receives the centre frequency that above-mentioned digital pen 130 is sent.Then carry out step 260, above-mentioned digital board 120 judges whether this centre frequency is above-mentioned warning frequency.If this centre frequency is to be above-mentioned warning frequency, then this digital board 120 is promptly notified this above-mentioned driver 112, sees through above-mentioned operating system 111 and sends the low charge alert signal of above-mentioned battery.At last, this digital board 120 will constantly heavily cover this flow process, continues to get back to the step, and rapid 250.
With reference to shown in Figure 3, but it is to be a block schematic diagram of a wireless electromagnetic induction system 300 of indicating battery electric weight according to another embodiment of the present invention.This wireless electromagnetic induction system 300 comprises a digital board 320 and a wireless pen 330 that is connected to a main frame 310.Wherein above-mentioned wireless pen 330 comprises a battery 331, a radio frequency oscillating circuit 332, a battery voltage detector 333 of supplying these wireless pen 330 all electric power, connects so far an electric weight emergency warning lamp 334, at least one button 335 and a nib 336 of battery voltage detector 133.This button 335 is to be connected to above-mentioned radio frequency oscillating circuit 332 with nib 336, when this button 335 with/or nib 336 is pressed or when contacting, then above-mentioned radio frequency oscillating circuit 332 will change the frequency that it sends.In view of the above, the frequency that the digital board radio frequency receiver 321 that above-mentioned digital board 320 is comprised can send according to this radio frequency oscillating circuit 332 learns whether this button 335 and nib 336 are pressed or its exposure level.Generally speaking, above-mentioned main frame 310 comprises an operating system 311 and a driver 312 usually with as this wireless electromagnetic induction system 300 software and hardware bridge joint of operating system 311 therewith.
As shown in Figure 3, above-mentioned battery voltage detector 333 is the output voltages that can detect above-mentioned battery 331, and is connected to above-mentioned radio frequency oscillating circuit 332.In an example of present embodiment, the fully loaded electric weight output voltage of this battery 331 is 1.5 volts, and this radio frequency oscillating circuit 132 is to export with a normal frequency, is the normal frequency of 170KHz as centre frequency.
Please refer to shown in Figure 4ly, it is for Fig. 3 the various frequencies of wireless electromagnetic induction system and a synoptic diagram of signal to be shown.Above-mentioned radio frequency oscillating circuit 332 more can a plurality of warning frequencies be exported, these a plurality of warning frequencies are the output voltage values a plurality of caution signals accepted of radio frequency oscillating circuit 332 therewith that correspond to a plurality of batteries individually, in view of the above, the output voltage values of above-mentioned a plurality of batteries also corresponds to above-mentioned a plurality of caution signal.The output voltage values of these a plurality of batteries all is lower than above-mentioned fully loaded electric weight output voltage.For convenience of description event, these a plurality of cell output voltage values present a decreasing sequence of numbers, and its some output voltage values is less than its previous output voltage values.In an example of present embodiment, a plurality of warning frequencies and a plurality of caution signal of corresponding so far a plurality of battery 331 output voltage values also present a decreasing sequence of numbers.Yet the corresponding relation that the present invention does not limit between these a plurality of warning frequencies and a plurality of cell output voltage value all presents the corresponding relation that successively decreases.
If after these battery 331 electric power continue to consume, the output voltage of above-mentioned battery voltage detector 333 this battery 331 that detects is greater than a N cell output voltage value of these a plurality of cell output voltage values, and less than N-1 cell output voltage value, then these battery voltage detector 333 output N caution signals are to above-mentioned radio frequency oscillating circuit 332, in view of the above, 332 of this radio frequency oscillating circuits are exported with N warning frequency.If when these battery 331 voltages still are higher than the 1st above-mentioned cell output voltage value, then above-mentioned battery voltage detector 333 outputs one the 1st caution signal is to above-mentioned radio frequency oscillating circuit 332, in view of the above, 332 of this radio frequency oscillating circuits are exported with the first above-mentioned warning frequency.If when these battery 331 voltages less than the cell output voltage value of above-mentioned last minimum, then above-mentioned battery voltage detector 333 outputs one special caution signal is to above-mentioned radio frequency oscillating circuit 332, in view of the above, 332 of this radio frequency oscillating circuits are exported with above-mentioned special warning frequency.
In an example of present embodiment, above-mentioned electric weight emergency warning lamp 334 has a plurality of emergency warning lamp signals that correspond to above-mentioned a plurality of cell output voltage values, and these a plurality of emergency warning lamp signals also correspond to above-mentioned a plurality of caution signals and warning frequency.When the output voltage of above-mentioned battery voltage detector 333 this battery 331 that detects a N cell output voltage value greater than these a plurality of cell output voltage values, and less than N-1 cell output voltage value, then above-mentioned battery voltage detector 333 makes this electric weight emergency warning lamp 334 show N emergency warning lamp signal.In this example, above-mentioned a plurality of emergency warning lamp signals can be according to the frequency change of cresset light on and off as signal; Above-mentioned a plurality of emergency warning lamp signals also can be according to the change color of cresset as signal; Moreover, or can be according to the color of cresset and frequency change as signal.The present invention does not limit the form of a plurality of emergency warning lamp signals of this electric weight emergency warning lamp 334.
Behind above-mentioned digital board radio frequency receiver 321 receive frequencies, this digital board 320 judges that promptly this centre frequency is to belong to wherein which of above-mentioned a plurality of warning frequency and special warning frequency, then notify above-mentioned driver 312, in view of the above, this driver 312 can see through above-mentioned operating system 311 and produce the low charge alert signal of a battery with the caution user.The low charge alert signal of this battery is that the centre frequency that is received with above-mentioned digital board radio frequency receiver 321 is corresponding, can be sound message, optical signal, jump out flash signal on form, the screen and change color etc., the present invention does not limit the form of the low charge alert signal of this battery.In an example of present embodiment, the low charge alert signal of this battery can be shown as one of above-mentioned a plurality of output voltage values, as 1.5 volts, 1.4 volts or the like.
Please refer to shown in Fig. 5 A, it is the flow process synoptic diagram that digital pen 330 is shown for Fig. 3.When step 510, this battery voltage detector 333 detects the output voltage of this battery 331.Then carry out step 520, these battery voltage detector 333 these output voltages of judgement should be exported which kind of corresponding caution signal radio frequency oscillating circuit 332 so far.When step 530, this radio frequency oscillating circuit 332 is according to the kind of receiving caution signal, with its corresponding warning frequency emission.At last, this digital pen 530 will constantly heavily cover this flow process, continues to get back to step 510.
Please refer to shown in Fig. 5 B, it is the flow process synoptic diagram that digital board 320 is shown for Fig. 3.When step 550, above-mentioned digital board radio frequency receiver 321 receives the centre frequency that above-mentioned digital pen 330 is sent.Then carry out step 560, above-mentioned digital board 320 judges which kind of warning frequency is this centre frequency be.In step 570, this digital board 320 is promptly notified this above-mentioned driver 312, sees through above-mentioned operating system 311 and sends the low charge alert signal of above-mentioned battery.At last, this digital board 320 will constantly heavily cover this flow process, continues to get back to step 550.
Apparently, according to the description among the top embodiment, the present invention has many corrections and difference.Therefore need be understood in its additional described scope of claim, except above-mentioned detailed description, the present invention can also implement in other embodiment widely.Above-mentioned is preferred embodiment of the present invention only, is not in order to limit claim of the present invention: all other do not break away from the equivalence of being finished under the disclosed spirit and changes or modification, all should be included in the protection domain of described claim.
Claims (16)
1. the wireless electromagnetic induction system of an indicating battery level is characterized in that, system comprises:
One wireless pen, this wireless pen comprises:
One battery is for should wireless pen electric power;
One radio frequency oscillating circuit is to produce this wireless pen position of expression that a normal frequency is a centre frequency and the radiofrequency signal of state; And
One battery voltage detector is to detect the output voltage of this battery, when the output voltage of this battery was lower than a critical value, it was this wireless pen position of expression of centre frequency and the radiofrequency signal of state that this battery voltage detector makes this radio frequency oscillating circuit produce a warning frequency; And
Be connected to a digital board of a main frame, this digital board comprises a digital board radio frequency receiver to receive the radiofrequency signal that this radio frequency oscillating circuit is launched, the centre frequency of the radiofrequency signal of being launched when this radio frequency oscillating circuit is during for this warning frequency, and this digital board notifies this main frame to send the low charge alert signal of a battery with the caution user.
2. wireless electromagnetic induction system according to claim 1, it is characterized in that, wherein above-mentioned wireless pen more comprises a nib and a button that is connected to this radio frequency oscillating circuit, and this radio frequency oscillating circuit produces the radiofrequency signal of this nib state of expression and this key-press status.
3. wireless electromagnetic induction system according to claim 1, it is characterized in that, wherein above-mentioned wireless pen more comprises an electric weight emergency warning lamp that is connected to this battery voltage detector, when the output voltage of this battery was lower than this critical value, this battery voltage detector made this electric weight emergency warning lamp light with the warning user.
4. wireless electromagnetic induction system according to claim 1, it is characterized in that, wherein above-mentioned radio frequency oscillating circuit more comprises a normal radio frequency oscillating circuit to be responsible for this normal frequency of emission, this warns frequency to be responsible for emission with a warning radio frequency oscillating circuit, and this warning radio frequency oscillating circuit is than this normal radio frequency oscillating circuit power saving.
5. the wireless electromagnetic induction method of an indicating battery level is characterized in that, this wireless electromagnetic induction method comprises:
One wireless pen and a digital board that is connected to a main frame are provided, this wireless pen comprise a battery for should wireless pen electric power, to detect the output voltage of this battery, this digital board comprises a digital board radio frequency receiver to receive the radiofrequency signal that this radio frequency oscillating circuit is launched to a radio frequency oscillating circuit with the radiofrequency signal that produces this wireless pen position of expression that a normal frequency is a centre frequency and state and a battery voltage detector;
When the output voltage of this battery was lower than a critical value, it was this wireless pen position of expression of centre frequency and the radiofrequency signal of state that this battery voltage detector makes this radio frequency oscillating circuit produce a warning frequency; And
The centre frequency of the radiofrequency signal of being launched when this radio frequency oscillating circuit is during for this warning frequency, and this digital board notifies this main frame to send the low charge alert signal of a battery with the caution user.
6. wireless electromagnetic induction method according to claim 5, it is characterized in that, wherein above-mentioned wireless pen more comprises a nib and a button that is connected to this radio frequency oscillating circuit, and this radio frequency oscillating circuit produces the radiofrequency signal of this nib state of expression and this key-press status.
7. wireless electromagnetic induction method according to claim 5, it is characterized in that, wherein above-mentioned wireless pen more comprises an electric weight emergency warning lamp that is connected to this battery voltage detector, when the output voltage of this battery was lower than this critical value, this battery voltage detector made this electric weight emergency warning lamp light with the warning user.
8. wireless electromagnetic induction method according to claim 5, it is characterized in that, wherein above-mentioned radio frequency oscillating circuit more comprises a normal radio frequency oscillating circuit to be responsible for this normal frequency of emission, this warns frequency to be responsible for emission with a warning radio frequency oscillating circuit, and this warning radio frequency oscillating circuit is than this normal radio frequency oscillating circuit power saving.
9. the wireless electromagnetic induction system of an indicating battery level is characterized in that, system comprises:
One wireless pen, this wireless pen comprises:
One battery is for should wireless pen electric power;
One radio frequency oscillating circuit is to produce the radiofrequency signal of this wireless pen position of expression and state, its centre frequency can be a plurality of warning frequencies and a special warning frequency, this radio frequency oscillating circuit is to receive to correspond to these a plurality of warning frequencies and a plurality of caution signals or the special caution signal that are somebody's turn to do special warning frequency, is decided to be these a plurality of warning frequencies or should warns frequency especially with the centre frequency with radiofrequency signal;
One battery voltage detector is to detect the output voltage of this battery, between the ceiling voltage of this cell output voltage and no-voltage a plurality of output voltage values that definition corresponds to these a plurality of caution signals, when the actual output voltage of this battery is lower than this a plurality of output voltage values, then to send this special caution signal to this radio frequency oscillating circuit be the radiofrequency signal of centre frequency to produce this special warning frequency to this battery voltage detector, when the actual output voltage of this battery just was higher than a certain value of these a plurality of output voltage values, then to send caution signal to this radio frequency oscillating circuit that corresponds to this value be the radiofrequency signal of centre frequency with the warning frequency that generation corresponds to this value to this battery voltage detector; And
Be connected to a digital board of a main frame, this digital board comprises a digital board radio frequency receiver to receive the radiofrequency signal that this radio frequency oscillating circuit is launched, it is a little more than this value with the actual output voltage of representing this battery that the centre frequency of the radiofrequency signal of being launched according to this radio frequency oscillating circuit, this digital board notify this main frame to send the low charge alert signal of a battery.
10. wireless electromagnetic induction system according to claim 9, it is characterized in that, wherein above-mentioned wireless pen more comprises a nib and a button that is connected to this radio frequency oscillating circuit, and this radio frequency oscillating circuit produces the radiofrequency signal of this nib state of expression and this key-press status.
11. wireless electromagnetic induction system according to claim 9, it is characterized in that, wherein above-mentioned wireless pen more comprises an electric weight emergency warning lamp that is connected to this battery voltage detector, this electric weight emergency warning lamp has a plurality of emergency warning lamp signals that correspond to these a plurality of output voltage values, and this battery voltage detector makes this electric weight emergency warning lamp show the emergency warning lamp signal that corresponds to this value.
12. wireless electromagnetic induction system according to claim 9 is characterized in that, the low charge alert signal of wherein above-mentioned battery is shown as this value of these a plurality of output voltage values.
13. a wireless electromagnetic induction method is characterized in that, this wireless electromagnetic induction method comprises:
One wireless pen and a digital board that is connected to a main frame are provided, this wireless pen comprises a battery for should wireless pen electric power, one radio frequency oscillating circuit with the radiofrequency signal that produces this wireless pen position of expression and state and a battery voltage detector to detect the output voltage of this battery, wherein the centre frequency of this radiofrequency signal can be a plurality of warning frequencies and a special warning frequency, this radio frequency oscillating circuit is to receive to correspond to these a plurality of warning frequencies and a plurality of caution signals or the special caution signal that should warn frequency especially, be decided to be these a plurality of warning frequencies or should warn frequency especially with centre frequency radiofrequency signal, be a plurality of output voltage values that definition corresponds to these a plurality of caution signals between the ceiling voltage of this cell output voltage and no-voltage, this digital board comprises a digital board radio frequency receiver to receive the radiofrequency signal that this radio frequency oscillating circuit is launched;
When the actual output voltage of this battery is lower than this a plurality of output voltage values, then to send this special caution signal to this radio frequency oscillating circuit be the radiofrequency signal of centre frequency to produce this special warning frequency to this battery voltage detector, when the actual output voltage of this battery just was higher than a certain value of these a plurality of output voltage values, then to send caution signal to this radio frequency oscillating circuit that corresponds to this value be the radiofrequency signal of centre frequency with the warning frequency that generation corresponds to this value to this battery voltage detector; And
It is a little more than this value with the actual output voltage of representing this battery that the centre frequency of the radiofrequency signal of being launched according to this radio frequency oscillating circuit, this digital board notify this main frame to send the low charge alert signal of a battery.
14. wireless electromagnetic induction method according to claim 13, it is characterized in that, wherein above-mentioned wireless pen more comprises a nib and a button that is connected to this radio frequency oscillating circuit, and this radio frequency oscillating circuit produces the radiofrequency signal of this nib state of expression and this key-press status.
15. wireless electromagnetic induction method according to claim 13, it is characterized in that, wherein above-mentioned wireless pen more comprises an electric weight emergency warning lamp that is connected to this battery voltage detector, this electric weight emergency warning lamp has a plurality of emergency warning lamp signals that correspond to these a plurality of output voltage values, and this battery voltage detector makes this electric weight emergency warning lamp show the emergency warning lamp signal that corresponds to this value.
16. wireless electromagnetic induction method according to claim 13 is characterized in that, the low charge alert signal of wherein above-mentioned battery is shown as this value of these a plurality of output voltage values.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510076323XA CN1880966A (en) | 2005-06-14 | 2005-06-14 | Wireless electromagnetic induction system and method for indicating battery level |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510076323XA CN1880966A (en) | 2005-06-14 | 2005-06-14 | Wireless electromagnetic induction system and method for indicating battery level |
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| CN1880966A true CN1880966A (en) | 2006-12-20 |
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| CNA200510076323XA Pending CN1880966A (en) | 2005-06-14 | 2005-06-14 | Wireless electromagnetic induction system and method for indicating battery level |
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| CN101989164B (en) * | 2009-08-05 | 2012-07-25 | 太瀚科技股份有限公司 | Electronic white board and positioning method thereof |
| CN107430460A (en) * | 2015-04-09 | 2017-12-01 | 三星电子株式会社 | Digital pen, touch system and its method that information is provided |
| CN109249835A (en) * | 2018-10-31 | 2019-01-22 | 江苏汇鑫新能源汽车科技有限公司 | A kind of electric tool charge capacity display system based on wireless transmission |
| CN111788546A (en) * | 2018-03-09 | 2020-10-16 | 深圳市柔宇科技股份有限公司 | Handwriting pen, writing board and state parameter transmission method |
| CN111989642A (en) * | 2018-02-26 | 2020-11-24 | 深圳市柔宇科技股份有限公司 | Handwriting pen, handwriting board and handwriting pen electric quantity obtaining method |
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2005
- 2005-06-14 CN CNA200510076323XA patent/CN1880966A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989164B (en) * | 2009-08-05 | 2012-07-25 | 太瀚科技股份有限公司 | Electronic white board and positioning method thereof |
| CN107430460A (en) * | 2015-04-09 | 2017-12-01 | 三星电子株式会社 | Digital pen, touch system and its method that information is provided |
| CN107430460B (en) * | 2015-04-09 | 2021-03-19 | 三星电子株式会社 | Digital pen, touch system and method for providing information |
| CN111989642A (en) * | 2018-02-26 | 2020-11-24 | 深圳市柔宇科技股份有限公司 | Handwriting pen, handwriting board and handwriting pen electric quantity obtaining method |
| CN111788546A (en) * | 2018-03-09 | 2020-10-16 | 深圳市柔宇科技股份有限公司 | Handwriting pen, writing board and state parameter transmission method |
| CN109249835A (en) * | 2018-10-31 | 2019-01-22 | 江苏汇鑫新能源汽车科技有限公司 | A kind of electric tool charge capacity display system based on wireless transmission |
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