CN111788546A - Handwriting pen, writing board and state parameter transmission method - Google Patents
Handwriting pen, writing board and state parameter transmission method Download PDFInfo
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- CN111788546A CN111788546A CN201880087879.4A CN201880087879A CN111788546A CN 111788546 A CN111788546 A CN 111788546A CN 201880087879 A CN201880087879 A CN 201880087879A CN 111788546 A CN111788546 A CN 111788546A
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- 239000000284 extract Substances 0.000 claims description 5
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
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Abstract
The application discloses writing pen, which comprises a controller, driver chip, induction coil, state parameter acquires unit and pressure sensors, the controller respectively with driver chip, state parameter acquires unit and pressure sensors electric connection, driver chip and induction coil electric connection, state parameter acquires the state parameter that the unit acquireed writing pen, pressure sensors acquires at least one of writing pressure value of writing pen, the controller is integrated and is obtained at least one target pressure value with state parameter and at least one writing pressure value, the controller conveys the target pressure value to driver chip, driver chip drive is with induction coil according to at least one target pressure value generate the target pressure signal in proper order and transmit to a board on. The application also discloses a writing board and a state parameter transmission method, the state parameter of the handwriting pen is acquired through the state parameter acquisition unit and integrated with the writing pressure value into a target pressure value, and then the target pressure value is transmitted through the pressure channel, so that the state parameter is transmitted.
Description
The application relates to the field of handwriting recognition, in particular to a handwriting pen, a writing board and a state parameter transmission method.
In the prior art, after the electronic writing board and the handwriting pen are connected in a matching manner, the movement of the pen core can be recognized and converted into the handwriting displayed on the electronic writing board through the pen core of the handwriting pen and a circuit inside the handwriting pen. The handwriting pen can be divided into two types from the aspect of whether power supply is needed or not, wherein the first type is an active handwriting pen, namely power is supplied through a battery, and the second type is a passive handwriting pen, namely power supply is not needed. The active handwriting pen transmits a positioning signal and a pressure signal after being powered by a battery, and the electronic writing board receives the positioning signal and the pressure signal and then recognizes the handwriting thickness and the handwriting thickness of the handwriting pen. However, the battery level is not known by existing active stylus pens. When the active stylus pen cannot write on the electronic writing board after being used for a period of time, the active stylus pen cannot judge that the battery power is insufficient or the active stylus pen is caused by other reasons. Moreover, the existing interactive protocol between the electronic tablet and the active stylus pen is not compatible with the transmission of other information besides the positioning information, the pressure-sensitive information and the like.
Disclosure of Invention
The embodiment of the application discloses a handwriting pen, a writing board and a state parameter transmission method, and aims to solve the problems.
The embodiment of the application discloses stylus pen, including controller, driver chip, induction coil, state parameter acquisition unit and pressure sensors, the controller respectively with driver chip, state parameter acquisition unit and pressure sensors electric connection, driver chip with induction coil electric connection, state parameter acquisition unit acquires the state parameter of stylus pen, pressure sensors acquires at least one writing pressure value of stylus pen, the controller will state parameter with at least one writing pressure value is integrated and is obtained at least one target pressure value, the controller will target pressure value conveys to driver chip, the driver chip drive will induction coil basis at least one target pressure value generates target pressure signal in proper order and transmits to on a tablet.
The embodiment of the application discloses a writing board, the target pressure signal that is sent by a writing pen is received to the writing board, and the target pressure value that this target pressure signal corresponds is by writing pressure value and the state parameter integration of writing pen form, the writing board basis the electromagnetic wave frequency of target pressure signal acquires the target pressure value that corresponds, and according to target pressure value is analyzed out the state parameter of writing pen, and control display the state parameter.
The embodiment of the application discloses a state parameter transmission method, which comprises the following steps: acquiring state parameters and at least one writing pressure value of the stylus; integrating the status parameter with the at least one written pressure value to obtain at least one target pressure value; generating at least one corresponding target pressure signal according to the at least one target pressure value and transmitting the target pressure signal to the tablet; the writing board obtains a corresponding target pressure value according to the electromagnetic wave frequency of the target pressure signal, analyzes the state parameter of the stylus pen according to the target pressure value, and controls and displays the state parameter.
According to the handwriting pen, the writing board and the state parameter transmission method, the state parameter acquisition unit acquires the state parameters of the handwriting pen in real time and integrates the state parameters with the writing pressure value to form the target pressure value, so that the state parameters are transmitted through the pressure channel between the handwriting pen and the writing board.
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic block diagram of a power acquisition system of a stylus pen according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a power acquisition system of a stylus pen according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a stylus pen according to an embodiment of the present application.
FIG. 4 is a block diagram of some components of the stylus in an embodiment of the present application.
Fig. 5 is a flowchart illustrating a status parameter transmission method according to an embodiment of the present application.
The technical solutions in the embodiments of the present application will be described below clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a block diagram of a state parameter transmission system 1 according to an embodiment of the present invention. The status parameter transmission system 1 includes a stylus 10 and a tablet 30. Referring to fig. 2, fig. 2 is a schematic structural diagram of a stylus pen 10 and a tablet 30 according to an embodiment of the present application. Wherein, the writing pen 10 is matched with the writing board 30. When acquiring the state parameter and the at least one writing pressure value, the stylus pen 10 integrates the state parameter and the at least one writing pressure value to obtain at least one target pressure value, generates a corresponding target pressure signal according to the at least one target pressure value, and transmits the target pressure signal to the tablet 30. The tablet 30 receives the target pressure signal, extracts the at least one target pressure value from the target pressure signal, and analyzes the state parameter from the target pressure value, thereby achieving the purpose of transmitting the state parameter.
Specifically, referring to fig. 3 and 4 together, fig. 3 shows a schematic structural diagram of the stylus 10 in an embodiment. It is understood that the stylus 10 may have other suitable configurations in other embodiments and is not limited thereto. The stylus pen 10 includes a stylus pen body 11, a pen core 12, an induction coil 13, a battery 14, a driving chip 15, and a controller 16. The pen core 12 is disposed in the stylus body 11. The induction coil 13 is positioned inside the stylus pen body 11 and sleeved on the pen core 12. The cartridge 12 is made of a metal material. The battery 14 is disposed within the stylus body 11. The battery 14 is electrically connected to all electronic components in the stylus pen body 11, such as the induction coil 13, the driving chip 15, the controller 16, and the like, in a direct or indirect manner to supply power. The controller 16 is electrically connected to the battery 14 and the driving chip 15, respectively. The driving chip 15 is electrically connected to the induction coil 13. The controller 16 controls the variation of the current supplied from the battery 14 to the induction coil 13 through the driving chip 15. The induction coil 13 thus generates a changing magnetic field, which in turn generates a changing electric field. When the directions of the electric field and the magnetic field are vertical and the energy of the electric field and the magnetic field is large, electromagnetic waves which can propagate in the air are generated. It can be understood that the controller 16 controls the magnitude of the current in the induction coil 13 through the driving chip 15 to control the frequency of the generated electromagnetic wave. That is, the magnitude of the current in the induction coil 13 is different, and the frequency of the generated electromagnetic wave is also different accordingly. Thus, the controller 16 controls the magnitude of the current in the induction coil 13 through the driving chip 15 to control the generation of electromagnetic waves of various frequencies.
Specifically, the stylus pen 10 starts to periodically transmit electromagnetic waves when its tip contacts the tablet 30. For the piezomagnetic type handwriting pen, in each time period, a part of the time period (for example, two-thirds period) of the handwriting pen 10 sends electromagnetic waves with fixed frequency to be used as a positioning signal, the positioning signal is received by the tablet 30, the tablet 30 displays a corresponding writing according to the positioning signal or the tablet 30 transmits the positioning signal to an external electronic device connected with the tablet 30 to allow the electronic device to display the corresponding writing, another part of the time period (for example, one-third period) of the handwriting pen is used for sending electromagnetic waves with other frequencies to be used as a pressure signal, the tablet 30 receives the pressure signal, and the tablet 30 recognizes a current writing pressure value of the handwriting pen 10 according to the pressure signal to further control the thickness of the displayed writing.
Specifically, when the power switch of the stylus pen 10 is turned on and the stylus pen 10 is in contact with the writing area of the tablet 30, the controller 16 controls the induction coil 13 to generate an electromagnetic wave with a fixed frequency as a positioning signal through the driving chip 15, and the positioning signal is transmitted to the tablet 30. The positioning signal is received by a plurality of sensors arranged in a handwriting area of the tablet 30, and then a position point of the stylus pen 10 on the tablet 30 is recognized, and the tablet 30 thus displays handwriting on the position point or displays corresponding handwriting on an external electronic device connected to the tablet 30. In this embodiment, the fixed frequency is 25 kHZ. It is understood that in other embodiments, the fixed frequency is not limited to 25kHZ, and may be set according to actual needs.
The stylus 10 also includes a pressure sensor 17. The pressure sensor 17 is arranged in the writing pen body 11 and is positioned at the tail end of the pen core 12. The pressure sensor 17 is electrically connected to the controller 16. The pressure sensor 17 is used for sensing a writing pressure value applied to the pen core 12. In general, for a common stylus pen, when the pressure sensor 17 obtains the writing pressure value, the controller 16 sends the writing pressure value to the driving chip 15. The driving chip 15 drives the induction coil 13 to send an electromagnetic wave signal matched with the writing pressure value, so as to transmit the writing pressure value to the tablet 30. And the writing pressure value is used for controlling the thickness of the displayed handwriting.
In this application, the controller 16 is in writing the pressure value and transmitting to before the tablet 30, will write the pressure value with the state parameter of handwriting pen 10 integrates and obtains the target pressure value, then, the target pressure value is transmitted to the driver chip 15, the driver chip 15 drives the induction coil 13 produces the electromagnetic wave that corresponds the frequency with the target pressure value is transmitted to the tablet 30. Thus, the driving chip 15 drives the induction coil 13 to transmit the target pressure value instead of the pure writing pressure value, so that the state parameters of the stylus pen 10 other than the positioning data and the pressure data can be transmitted to the tablet 30.
In particular, the stylus 10 further comprises a state parameter obtaining unit 18. The controller 16 is electrically connected to the state parameter acquiring unit 18. The state parameter acquiring unit 18 acquires the state parameters of the stylus 10. In one embodiment, the status parameter may be a current power level of the stylus 10. The state parameter acquiring unit 18 is electrically connected to the battery 14 of the stylus pen 10, and acquires the current electric quantity of the battery 14 in real time. When the state parameter acquiring unit 18 acquires the current electric quantity, the controller 16 integrates the current electric quantity into the writing pressure value to obtain the target pressure value. It is understood that in other embodiments, the status parameter may be any other status parameter of the stylus 10 that needs to be transmitted from the stylus 10 to the tablet 30, such as the ink remaining in the pen core 12 of the stylus 10.
Specifically, in an embodiment, the integrating the state parameter and the writing pressure value is specifically: integrating the status parameter into one of the written pressure values to obtain one of the target pressure values. Further specifically, in this embodiment, the integrating the state parameter and the writing pressure value specifically includes: and integrating the state parameter into one bit at the tail end of the written pressure value to obtain the target pressure value. It is understood that in other embodiments, integrating the status parameter with the written pressure value is not limited to integrating the status parameter into the last digit of one of the written pressure values. For example, when the state parameter is the current electric quantity of the battery 14 of the stylus pen 10, the integrating the state parameter and the writing pressure value specifically includes: and integrating the current electric quantity to one bit at the tail end of the writing pressure value. Because the pressure value in the original communication protocol of the stylus pen 10 and the tablet 30 is usually very large, for example, 0 to 5000, one bit at the end of the writing pressure value is replaced to transmit the state parameter, for example, the current electric quantity of the battery 14 of the stylus pen 10, so that the precision loss of the writing pressure value is very small, and the method is completely acceptable in practical application. Therefore, when the requirement on the accuracy of the electric quantity is not high, numbers 0-9 are adopted to represent the current electric quantity from small to large, and the data is integrated to the last bit of the written pressure value. For example, the current charge amount is represented by a numeral 0 between 0% and 9%, the current charge amount is represented by a numeral 1 between 10% and 19%, the current charge amount is represented by a numeral 2 between 20% and 29%, the current charge amount is represented by a numeral 3 between 30% and 39%, the current charge amount is represented by a numeral 4 between 40% and 49%, the current charge amount is represented by a numeral 5 between 50% and 59%, the current charge amount is represented by a numeral 6 between 60% and 69%, the current charge amount is represented by a numeral 7 between 70% and 79%, the current charge amount is represented by a numeral 8 between 80% and 89%, the current charge amount is represented by a numeral 9 between 90% and 99%, and the data is integrated into the last digit of the written pressure value. For example, when the current electric quantity is 45% and the writing pressure value is 451, the current electric quantity is represented by 4, and the target pressure value obtained by integrating the current electric quantity to the last bit of the writing pressure value is 454.
The controller 16 transmits the target pressure value to the driving chip 15. The driving chip 15 obtains a corresponding electromagnetic wave frequency according to the target pressure value and controls the induction coil 13 to generate an electromagnetic wave with the corresponding frequency as a target pressure signal, and the target pressure signal is transmitted to the tablet 30.
Specifically, the stylus pen 10 prestores a corresponding relationship table of pressure values and electromagnetic wave frequencies. That is, each pressure value corresponds to an electromagnetic wave of a corresponding frequency. It is understood that in other embodiments, the stylus 10 further includes a memory (not shown) for storing the correspondence table. In one embodiment, the frequency of the electromagnetic wave corresponding to the pressure value is between 18 and 35 kHZ. In other embodiments, the frequency may be adjusted according to actual needs, and is not limited herein. After the driving chip 15 drives the induction coil 13 to send out a positioning signal, the corresponding electromagnetic wave frequency is obtained according to the target pressure value, and the induction coil 13 is controlled to generate the electromagnetic wave with the corresponding frequency as a target pressure signal and transmit the target pressure signal to the tablet 30.
The tablet 30 receives the target pressure signal. The tablet 30 also stores the above correspondence table. The tablet 30 obtains a corresponding target pressure value from a preset corresponding relation table of the pressure value and the electromagnetic wave frequency according to the electromagnetic wave frequency of the target pressure signal, and reversely analyzes the target pressure value according to the integration rule to obtain the state parameter. The tablet 30 displays the status parameters or an external electronic device connected to the tablet 30 displays the status parameters. For example, when the target pressure value is 454, the writing pressure value analyzed by the tablet 30 according to the target pressure value is 450, and the current electric quantity of the state parameter is 40%.
More specifically, according to the existing communication protocol, the tablet 30 also directly transmits the target pressure value to other external electronic devices, such as a PC or a smart phone, connected to the tablet 30 via a network.
In another embodiment, integrating the status parameter with the written pressure value is implemented by integrating the status parameter into at least one written pressure value to obtain at least one target pressure value. Specifically, in an embodiment, the integrating the state parameter and the written pressure value is to generate a data stream including a data header, a state parameter and a data trailer according to the state parameter, and then integrate the data stream into at least one written pressure value to obtain at least one target pressure value. Further specifically, integrating the data stream into at least one written pressure value to obtain at least one target pressure value is specifically: and integrating each data in the data stream to the tail bit of at least one written pressure value to obtain the target pressure values with the number equal to that of the data in the data stream.
Further specifically, integrating the data stream into at least one written pressure value to obtain at least one target pressure value is specifically: integrating all data in the data stream into at least one written pressure value to obtain at least one target pressure value. Further specifically, integrating all data in the data stream into at least one written pressure value to obtain at least one target pressure value is specifically: and integrating all data in the data stream into at least one bit at the tail of at least one written pressure value to obtain at least one target pressure value.
Specifically, the header is represented by first data representing a start marker. The data tail is represented by second data representing an end marker, and the first data is different from the second data so as to distinguish the data header from the data tail. Specifically, in this embodiment, the convention number 0 must be followed by another number to indicate a meaning, for example, the first data is 01 and the second data is 02. The state parameter is located between the data head and the data tail. Since the first data and the second data both start with the number 0, in order to distinguish the ordinary number 0 in the state parameter from the 0 in the first data and the second data, the ordinary number 0 is represented by 00. It is understood that in other embodiments, the first data and the second data may be represented in other representations.
For more detailed description, the state parameter is still described by taking the current electric quantity as an example. When the state parameter acquiring unit 18 acquires the current electric quantity of the battery 14, the controller 16 generates a data stream including a data header, the current electric quantity, and a data trailer according to the current electric quantity. For example, when the current amount of power is 30%, the data flow generated by the controller 16 according to the current amount of power is 0130002. The controller 16 integrates the data stream into at least one written pressure value to arrive at least one target pressure value. Specifically, in one embodiment, the controller 16 integrates each data in the data stream into one of the written pressure values to obtain a target pressure value equal to the number of data in the data stream. For example, assuming that the number of written pressure values equal to the number of bits of the data stream is constant at 500, the target pressure values corresponding to the data stream are sequentially: 500. 501, 503, 500, 502.
The controller 16 controls the driving chip 15 to transmit the at least one target pressure value to the tablet 30 one by one. Specifically, the controller 16 sequentially sends all target pressure values corresponding to the data stream to the tablet 30 through the driving chip 15.
When the tablet 30 receives all the target pressure values corresponding to the data stream, the last data of the target pressure values are sequentially extracted to obtain the data stream, for example, 0130002, and the status parameters are reversely analyzed from the data stream. Specifically, the data head and the data tail of the data stream are removed first, and then the remaining other data in the data stream are replaced by 0 for every two adjacent 00 according to the left-to-right direction, so as to obtain the state parameter. For example, in this embodiment, the status parameter is 30, that is, the current electric quantity is 30%.
It is understood that in other embodiments, any length of data may be transmitted by integrating the data streams as described above.
Since the power of the stylus pen 10 usually changes little and continuously over a period of time, and for the tablet 30, the stylus pen capable of writing thereon may be the stylus pen 10 having the function of transmitting the status parameters, or may be a general stylus pen having no function of transmitting the status parameters. However, the stylus pen 10 cannot actively inform the tablet 30 whether it has a function of transmitting the status parameter. Therefore, before the handwriting board 30 does not determine whether the handwriting pen 10 is a handwriting pen with a function of transmitting state parameters, it is assumed that the handwriting pen is the handwriting pen 10 with the function of transmitting state parameters, and the state parameters are analyzed each time a pressure value is received, and when a difference value between two adjacent state parameters analyzed within a preset time period is greater than a preset threshold value, it is determined that the handwriting pen is a normal handwriting pen, and then the power analysis is stopped; and when the difference value between two adjacent state parameters analyzed in a preset time period is smaller than a preset threshold value, judging that the handwriting pen is the handwriting pen 10 with the state parameter transmission function.
It is understood that the above-mentioned integration of the status parameter and the written pressure value is the integration of the status parameter into the last bit of the written pressure value. In other embodiments, the above-mentioned integration of the status parameter and the written pressure value is not limited to the integration of the status parameter into the last one bit of the written pressure value, but may be the integration into the last two bits, the last three bits, etc. of the written pressure value, as long as the written pressure value is large enough that the integration of the status parameter into the written pressure value does not affect the measurement accuracy of the written pressure value, for example, when the written pressure value is 100000 levels, the integration of the status parameter into the last two bits of the written pressure value does not affect the measurement accuracy. It can be understood that the above written pressure value is a value calculated according to parameters such as actually measured pressure, and the calculation formula can be set according to actual requirements, so that the written pressure value is only a representation value, and has no measurement unit just like 0 and 1 in computer language.
Referring to fig. 5, fig. 5 is a flowchart illustrating a status parameter transmission method according to an embodiment of the present application. The status parameter transmission method is applied to the status parameter transmission system 1 described above, and the execution sequence is not limited to the sequence shown in fig. 5. The state parameter transmission method comprises the following steps:
In one embodiment, the integration of the status parameter and the written pressure value is to integrate the status parameter into one written pressure value to obtain a target pressure value. More specifically, in this embodiment, the integrating the status parameter and the writing pressure value is to integrate the status parameter into a last bit of the writing pressure value to obtain a target pressure value. It is understood that in other embodiments, the integration of the status parameter with the written pressure value is not limited to the integration of the current charge to the last digit of one of the written pressure values.
In another embodiment, the integrating the status parameter and the writing pressure value is specifically as follows: integrating the status parameter into at least one written pressure value to obtain at least one target pressure value. Specifically, in an embodiment, the integrating the state parameter and the writing pressure value is specifically: firstly, generating a data stream comprising a data head, state parameters and a data tail according to the state parameters, and then integrating the data stream into at least one writing pressure value to obtain at least one target pressure value. Further specifically, integrating the data stream into at least one written pressure value to obtain at least one target pressure value is specifically: and integrating each data in the data stream to the last bit of at least one written pressure value to obtain the target pressure values with the number equal to that of the data in the data stream.
Further specifically, integrating the data stream with at least one written pressure value to obtain at least one target pressure value is specifically: integrating all data in the data stream into at least one written pressure value to obtain at least one target pressure value. Further specifically, integrating all data in the data stream into at least one written pressure value to obtain at least one target pressure value is specifically: and integrating all data in the data stream into at least one bit at the tail of at least one written pressure value to obtain at least one target pressure value.
It is understood that the above-mentioned integration of the status parameter and the written pressure value is the integration of the status parameter into the last bit of the written pressure value. In other embodiments, the above-mentioned integration of the status parameter and the written pressure value is not limited to the integration of the status parameter into the last one bit of the written pressure value, but may be integrated into the last two bits, the last three bits, etc. of the written pressure value, as long as the written pressure value is large enough that the integration of the status parameter into the written pressure value does not affect the measurement accuracy of the written pressure value.
Specifically, the stylus pen 10 prestores a corresponding relationship table of pressure values and electromagnetic wave frequencies. Each pressure value corresponds to an electromagnetic wave of a corresponding frequency. After the driving chip 15 drives the induction coil 13 to send out a positioning signal, the corresponding electromagnetic wave frequency is obtained according to the target pressure value, and the induction coil 13 is controlled to generate the electromagnetic wave with the corresponding frequency as a target pressure signal and transmit the target pressure signal to the tablet 30.
In step 540, the tablet 30 obtains a corresponding target pressure value according to the electromagnetic wave frequency of the target pressure signal, and analyzes the state parameter of the stylus 10 according to the target pressure value, and controls and displays the state parameter. Specifically, the tablet 30 receives the target pressure signal. The tablet 30 also stores the above correspondence table. The tablet 30 obtains a corresponding target pressure value from a preset corresponding relation table of the pressure value and the electromagnetic wave frequency according to the electromagnetic wave frequency of the target pressure signal, and reversely analyzes the target pressure value according to the integration rule to obtain the state parameter. The tablet 30 displays the status parameters or an external electronic device connected to the tablet 30 displays the status parameters. For example, when the target pressure value is 454, the writing pressure value analyzed by the tablet 30 according to the target pressure value is 450, and the current electric quantity is 40%.
According to the handwriting pen, the writing board and the state parameter transmission method, the state parameter acquisition unit acquires the state parameters of the handwriting pen in real time and integrates the state parameters with the writing pressure value to form the target pressure value, so that the state parameters are transmitted through the pressure channel between the handwriting pen and the writing board.
It should be noted that the writing on the tablet may be different according to the type of the tablet, and may be classified as writing on the tablet or writing on a paper laid on the tablet.
The foregoing is a preferred embodiment of the present application and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present application, and such improvements and modifications are also considered as the scope of the present application.
Claims (21)
- A stylus pen is characterized by comprising a controller, a driving chip, an induction coil, a state parameter acquisition unit and a pressure sensor, the controller is respectively electrically connected with the driving chip, the state parameter acquisition unit and the pressure sensor, the driving chip is electrically connected with the induction coil, the state parameter acquiring unit acquires the state parameters of the stylus pen, the pressure sensor obtains at least one writing pressure value of the stylus, the controller integrates the state parameter and the at least one writing pressure value to obtain at least one target pressure value, the controller transmits the target pressure value to the driving chip, and the driving chip drives the induction coil to sequentially generate a target pressure signal according to the at least one target pressure value and transmit the target pressure signal to a tablet.
- The stylus of claim 1, wherein the controller integrates the status parameter into one of the written pressure values to obtain one of the target pressure values.
- The stylus of claim 1, wherein the controller generates a data stream based on the status parameters, the data stream including a data header, status parameters, and a data trailer, and then integrates the data stream into the at least one written pressure value to obtain the at least one target pressure value.
- The stylus of claim 3, wherein the data header is represented by first data representing a start marker and the data trailer is represented by second data representing an end marker, the first data being different from the second data.
- The stylus of claim 3, wherein the controller integrates each datum in the data stream into one of the written pressure values to achieve a number of the target pressure values equal to the number of data in the data stream.
- The stylus of claim 3, wherein the controller integrates all data in the data stream to at least one written pressure value to arrive at the at least one target pressure value.
- The stylus of any one of claims 1-6, wherein the controller integrates the status parameter into at least one bit at the end of the written pressure value to obtain the target pressure value.
- The stylus according to any one of claims 1-7, wherein the state parameter is one of a current charge and a remaining amount of ink of the stylus.
- The stylus pen according to any one of claims 1 to 8, wherein the driving chip obtains a corresponding frequency of the electromagnetic wave according to the target pressure value and controls the induction coil to generate the electromagnetic wave of the corresponding frequency as the target pressure signal.
- The stylus pen of claim 9, wherein a corresponding relationship table of pressure values and electromagnetic wave frequencies is pre-stored in the stylus pen, and the driving chip obtains a corresponding electromagnetic wave frequency according to the target pressure value and controls the induction coil to generate an electromagnetic wave with the corresponding frequency as a target pressure signal and transmit the target pressure signal to the tablet.
- The writing board is characterized in that the writing board receives a target pressure signal sent by a writing pen, a target pressure value corresponding to the target pressure signal is formed by integrating a writing pressure value and a state parameter of the writing pen, the writing board obtains the corresponding target pressure value according to the electromagnetic wave frequency of the target pressure signal, analyzes the state parameter of the writing pen according to the target pressure value, and controls and displays the state parameter.
- The tablet of claim 11, wherein the tablet pre-stores a table of correspondence between pressure values and electromagnetic wave frequencies, and the tablet obtains a corresponding target pressure value from the table of correspondence according to the electromagnetic wave frequency of the target pressure signal.
- The tablet of claim 11, wherein the tablet extracts the status parameter from a written pressure value when the status parameter is integrated into the written pressure value.
- The tablet of claim 13, wherein the tablet extracts the status parameter from at least one digit at the end of a written pressure value when the status parameter is integrated into at least one digit at the end of the written pressure value.
- The tablet of claim 11, wherein when the status parameter is integrated into at least one of the written pressure values, the tablet extracts data from the at least one written pressure value to obtain a data stream, the data stream including a data header, a status parameter, and a data trailer, and removes the data header and the data trailer to obtain the status parameter.
- The tablet of claim 15, wherein the tablet extracts data sequentially from at least one last written pressure value to obtain the data stream when the status parameter is integrated into at least one last written pressure value.
- A method for transmitting status parameters, the method comprising:acquiring state parameters and at least one writing pressure value of the stylus;integrating the status parameter with the at least one written pressure value to obtain at least one target pressure value;generating at least one corresponding target pressure signal according to the at least one target pressure value and transmitting the target pressure signal to the tablet;the writing board obtains a corresponding target pressure value according to the electromagnetic wave frequency of the target pressure signal, analyzes the state parameter of the stylus pen according to the target pressure value, and controls and displays the state parameter.
- The method for transmitting status parameters according to claim 17, wherein the step of "integrating said status parameter with said at least one written pressure value to obtain at least one target pressure value" is specifically:and integrating the state parameter into one of the written pressure values to obtain one target pressure value.
- The method for transmitting status parameters according to claim 17, wherein "integrating said status parameter with said at least one written pressure value to obtain at least one target pressure value" includes:and generating a data stream according to the state parameters, wherein the data stream comprises a data head, the state parameters and a data tail, and then integrating the data stream into at least one writing pressure value to obtain the at least one target pressure value.
- The method for transmitting status parameters according to claim 17, wherein "integrating said status parameter with said at least one written pressure value to obtain at least one target pressure value" includes:integrating each data in the data stream into one of the written pressure values to obtain the target pressure values with the number equal to that of the data in the data stream; orIntegrating all data in the data stream to at least one written pressure value to obtain the at least one target pressure value.
- The method for transmitting status parameters according to claim 17, wherein the step of "integrating said status parameter with said at least one written pressure value to obtain at least one target pressure value" is specifically:and integrating the state parameter into at least one bit at the tail end of the written pressure value to obtain the target pressure value.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/078590 WO2019169628A1 (en) | 2018-03-09 | 2018-03-09 | Stylus pen, tablet and state parameter transmission method |
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| CN111788546A true CN111788546A (en) | 2020-10-16 |
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| CN201880087879.4A Pending CN111788546A (en) | 2018-03-09 | 2018-03-09 | Handwriting pen, writing board and state parameter transmission method |
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