CN112639692A

CN112639692A - Writing control method, handwriting pen and handwriting input device

Info

Publication number: CN112639692A
Application number: CN201880094113.9A
Authority: CN
Inventors: 陈松亚; 邹翔
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2018-08-08
Filing date: 2018-08-08
Publication date: 2021-04-09
Also published as: WO2020029125A1

Abstract

The invention provides a writing control method, a handwriting pen and a handwriting input device, wherein the writing control method is applied to the handwriting pen (100); the handwriting pen (100) comprises a handwriting end (S), an erasing end (C) and a working end identification unit (1100) connected with the handwriting end (S) and the erasing end (C), when the handwriting end (S) or the erasing end (C) operates on the handwriting board (200), the working end identification unit (1100) generates different identification signals, and the writing control method comprises the following steps: generating a corresponding sensing signal according to the identification signal generated by the working end identification unit, wherein the sensing signal is used for determining the working mode of the stylus (S10); and transmitting a corresponding sensing signal to the handwriting pad (S20); and controlling the handwriting board to respond to the sensing signal and determine the current working mode of the handwriting pen, wherein the working mode comprises a writing mode and an erasing mode (S30). The induction signal generated by the writing control method according to different operation modes of the handwriting pen on the handwriting board can be used for determining writing and erasing modes of the handwriting pen and controlling the handwriting board to respond to the two modes.

Description

Writing control method, handwriting pen and handwriting input device

Technical Field

The present invention relates to a writing touch technology, and in particular, to a writing control method, a stylus pen, and a handwriting input device.

Background

Most of the handwriting pens such as writable capacitive pens and the like on the market at present can meet the functions of writing and touch identification mainly through a customized metal pen core, and can synchronously restore actual handwriting to a display terminal for displaying. However, the existing handwriting pen only has a writing mode and can only control the display terminal to display writing contents during writing, but the handwriting pen cannot realize writing and erasing modes, that is, cannot synchronously control the handwriting board or the display terminal to respond to the writing mode and the erasing mode during writing and erasing of the handwriting pen.

Disclosure of Invention

In view of the above, the present invention provides a writing control method capable of controlling a handwriting board to respond to a writing mode or an erasing mode while writing or erasing contents.

The invention provides a writing control method, which is applied to a stylus; the handwriting pen can perform handwriting input on a handwriting board, the handwriting pen comprises a writing end, an erasing end and a working end identification unit connected with the writing end and the erasing end, when the writing end or the erasing end operates on the handwriting board, the working end identification unit generates different identification signals, the writing control method comprises the steps of generating corresponding induction signals according to the identification signals generated by the working end identification unit, and the induction signals are used for determining the working mode of the handwriting pen; and transmitting a corresponding induction signal to the handwriting board; and controlling the handwriting board to respond to the sensing signal and determine the current working mode of the handwriting pen, wherein the working mode comprises a writing mode and an erasing mode.

The invention also provides a stylus which comprises a shell, a pen core, an erasing piece, a working end identification element and a circuit board; the circuit board comprises a processor; the pen refill, the circuit board and the working end identification element are accommodated in the shell, a pen point of the pen refill is exposed out of one end of the shell, the erasing piece is arranged at the other end, opposite to the shell, of the shell, and the working end identification element is connected with the pen refill and the erasing piece; when the pen core or the erasing piece performs writing operation on the writing board, the working end identification element generates different identification signals, and the processor in the circuit board generates different induction signals according to the different identification signals.

The present invention also provides a handwriting input device, comprising a handwriting pen and a handwriting pad, wherein the handwriting pad comprises: the signal detection unit is used for detecting and receiving an induction signal generated by the handwriting pen; the processing unit is used for determining the working mode of the stylus pen according to the sensing signal of the stylus pen received by the signal detection unit; the working modes of the stylus comprise a writing mode and an erasing mode; when the processing unit determines that the working mode of the stylus pen is a writing mode, determining an electronic writing track of the stylus pen according to the received sensing signal of the stylus pen, and storing data of the electronic writing track; and when the processing unit determines that the working mode of the stylus pen is the erasing mode, determining an electronic erasing track of the stylus pen according to the received sensing signal of the stylus pen, determining an electronic writing track to be erased correspondingly according to the electronic erasing track, and controlling to delete the stored data corresponding to the electronic writing track.

The induction signal generated by the writing control method according to the different operation modes of the handwriting pen on the handwriting board can be used for determining the working mode of the handwriting pen, the working mode comprises a writing mode and an erasing mode, the two modes enable a user to use the handwriting pen to write or erase, and the handwriting board can be controlled to respond to the two modes.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

FIG. 1 is a flow chart of a writing control method provided by the present invention;

FIG. 2 is a block diagram of a stylus pen according to the present invention;

FIG. 3 is a schematic structural diagram of a stylus provided in the present invention;

FIG. 4 is a schematic structural diagram of a wiper head portion of a stylus according to the present invention;

FIG. 5 is a block diagram of a handwriting input device according to the present invention;

FIG. 6 is a block diagram of a handwriting input system provided by the present invention;

FIG. 7 is a diagram illustrating two writing and erasing modes of a handwriting input device according to the present invention;

FIG. 8 is a diagram illustrating two writing and erasing modes of another handwriting input device provided by the present invention;

FIG. 9 is a flow chart of another writing control method provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

The terms "first," "second," and the like in the description and in the claims, and in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 2 and fig. 7, the present invention provides a writing control method applied to a stylus 100; the handwriting pen 100 can perform handwriting input on the handwriting board 200, the handwriting pen 100 comprises a writing end S, an erasing end C and a working end recognition unit 1100 connected with the writing end S and the erasing end C, when the writing end S or the erasing end C operates on the handwriting board 100, the working end recognition unit 1100 generates different recognition signals, and the writing control method comprises steps S10, S20 and S30. As described in detail below.

In step S10, a corresponding sensing signal is generated according to the recognition signal generated by the working end recognition unit 1100, and the sensing signal is used to determine the working mode of the stylus pen 100. It is understood that the working end identification unit 1100 is capable of generating different identification signals, and thus different sensing signals can be generated according to different identification signals.

Step S20, a corresponding sensing signal is transmitted to the tablet 200.

In step S30, the tablet 200 is controlled to respond to the sensing signal and determine the current working mode of the pen 100, where the working mode includes a writing mode and an erasing mode. Different sensing signals may be used to determine the corresponding operating mode.

The induction signal generated by the writing control method according to the different operation modes of the handwriting pen 100 on the handwriting board 200 can be used for determining the operation mode of the handwriting pen, and the operation mode comprises a writing mode and an erasing mode, the two modes enable a user to use the handwriting pen 100 to write or erase, and the handwriting board 200 can be controlled to respond to the two modes.

In a further embodiment, the induction signal is an electromagnetic signal with a specific frequency, and the electromagnetic induction signal with different frequencies is generated according to different identification signals. The electromagnetic induction signals of different frequencies are used to determine different operating modes of stylus 100.

Referring to fig. 2 and 7, in a further embodiment, the working end recognition unit 1100 includes a first pressure sensing module 1101 and a second pressure sensing module 1102 (see fig. 2), the recognition signal includes a first pressure signal and a second pressure signal, the first pressure sensing module 1101 generates the first pressure signal when sensing that the writing end S performs handwriting input on the handwriting pad 200 (see fig. a in fig. 7), and the second pressure sensing module 1102 generates the second pressure signal when sensing that the erasing end C performs erasing on the handwriting pad 200 (see fig. b in fig. 7).

In a further embodiment, the "generating a corresponding sensing signal according to the identification signal, the sensing signal being used for determining the operation mode of the stylus 200" includes:

when the sensing signal transmitted to the tablet 200 is generated according to the first pressure signal, the tablet 200 determines that the operation mode of the stylus pen 100 is the writing mode, determines an electronic writing trace according to the sensing signal, and stores data of the electronic writing trace. That is, when the stylus pen 100 is performing a writing operation, the tablet 200 determines that the operation mode of the stylus pen 100 is a writing mode, and stores data of an electronic writing trace so that the data stored in the tablet 200 coincides with the contents written by the stylus pen 100.

In a further embodiment, the "generating a corresponding sensing signal according to the identification signal, the sensing signal being used for determining the operation mode of the stylus pen" includes:

when the sensing signal transmitted to the tablet 200 is generated according to the second pressure signal, the tablet 200 determines that the operation mode of the stylus pen 100 is the erasing mode, determines the electronic erasing trace according to the sensing signal, determines the electronic writing trace to be erased correspondingly according to the electronic erasing trace, and controls to delete the stored data corresponding to the electronic writing trace. That is, when the handwriting pen 100 is performing an erasing operation, the tablet 200 determines that the operation mode of the handwriting pen 100 is the erasing mode, and controls to delete the saved data of the corresponding electronic writing trace so that the data of the electronic writing trace deleted by the tablet 200 coincides with the content erased by the handwriting pen 100.

In a further embodiment, the sensing signal further comprises a first pressure signal; the handwriting board 200 obtains the first pressure signal in the sensing signal, and determines the track thickness value of the electronic writing track according to the first pressure signal and the change of the first pressure signal.

Referring to fig. 3, the present invention provides a stylus 100, where the stylus 100 includes a housing 150, a pen core 110, a wiper 130, a working end recognition element 120, and a circuit board 140. The circuit board 140 includes a processor; the pen core 110, the circuit board 140 and the working end recognition element 120 are accommodated in the housing 150. The tip of the pen core 110 is exposed at one end of the casing 150, i.e., the writing end S, for writing. The erasing member 130 is disposed at the opposite end of the housing 150, i.e., the erasing end C, for erasing. And working end identification element 120 is connected to cartridge 110 and eraser 130. When pen core 110 or erasing piece 130 performs writing operation on the writing pad, working end identification element 120 generates different identification signals, and the processor in circuit board 140 generates different sensing signals according to the different identification signals.

The stylus pen 100 of the present invention generates different identification signals according to different operation modes, and generates different sensing signals according to the identification signals. Different sensing signals may be used to control different modes of operation.

In a further embodiment, working end recognition element 120 comprises a first pressure sensor 121 and a second pressure sensor 122, the recognition signal comprising a first pressure signal and a second pressure signal, the first pressure sensor 121 generating the first pressure signal upon sensing that pen core 110 is performing a handwriting input on tablet 200, the second pressure sensor 122 generating the second pressure signal upon sensing that eraser 130 is performing an erasure on tablet 200.

When the stylus pen 100 performs writing, the pen core 110 collides with the first pressure sensor 121 to generate an acting force on the first pressure sensor 121, and the first pressure sensor 121 generates a first pressure signal when sensing a pressure on the pen core 110 side. When the stylus pen 100 is erased, the erasing member 130 collides with the second pressure sensor 122 to generate a force on the second pressure sensor 122, and the second pressure sensor 122 generates a second pressure signal when sensing the pressure on the erasing member 130 side.

Specifically, as shown in fig. 3, the first pressure sensor 121 is connected to the pen core 110 through a first elastic member J1, and the second pressure sensor 122 is connected to the erasing member 130 through a second elastic member J2. The first elastic member J1 can be a spring or a spring plate, and the second elastic member J2 can be a spring or a spring plate.

When writing is performed by the pen core 110 without using the writing end or erasing is performed by the erasing member 130 without using the erasing end C, the first elastic member J1 or the second elastic member J2 is in a natural state, i.e., in an unstretched or compressed state, the pen core 110 does not generate pressure to the first pressure sensor 121, and the erasing member 130 does not generate pressure to the second pressure sensor 122. When the writing pen 100 writes using the pen core 110 of the writing tip S, the pen core 110 generates a force moving toward the first pressure sensor 121 due to interference with the writing pad 200, thereby compressing the first elastic member J1 and generating a force on the first pressure sensor 121 through the first elastic member J1. When the stylus pen 100 is erased using the erasing member 130 of the erasing terminal C, the erasing member 130 generates a force moving toward the second pressure sensor 122 due to interference with the writing pad 200, thereby compressing the second elastic member J2 and generating a force on the second pressure sensor 122 through the second elastic member J2.

In a further embodiment, a processor in the circuit board 140 generates an electromagnetic signal having a first frequency upon receiving a first pressure signal and a second frequency upon receiving a second pressure signal. The electromagnetic signal having the first frequency is used to determine the operational mode of stylus 100 as a writing mode and the electromagnetic signal having the second frequency is used to determine the operational mode of stylus 100 as an erasing mode.

In a further embodiment, the stylus pen 100 further comprises an electromagnetic coil 160 located in the housing 150, the circuit board 140 is connected to the electromagnetic coil 160 and the first pressure sensor 121, and the processor of the circuit board 140 controls the electromagnetic coil 160 to generate an electromagnetic signal with a first frequency when receiving the first pressure signal. In some implementations, the electromagnetic signal of the first frequency may also be generated by the circuit board 140 when the circuit board 140 receives the first pressure signal.

In some embodiments, the electromagnetic coil 160 is disposed on the pen core 110. The casing of the pen core 110 is preferably a metal pen core barrel, and when the electromagnetic induction coil 160 is sleeved on the pen core 110, the electromagnetic induction coil 160 can be connected with the circuit board 140 through the pen core 110 with the metal pen core barrel. In other embodiments, the electromagnetic coil 160 may be connected to the circuit board 140 by a wire.

In a further embodiment, the stylus pen 100 further includes a wiper signal board 170 located in the housing 150, the circuit board 140 is connected to the wiper signal board 170 and the second pressure sensor 122, and the processor of the circuit board 140 controls the wiper signal board 170 to generate an electromagnetic signal having a second frequency when receiving the second pressure signal. In some implementations, the electromagnetic signal of the second frequency may also be generated by the circuit board 140 when the circuit board 140 receives the second pressure signal.

It will be appreciated that the second pressure sensor 122 may be integrated into the erase header signal board 170 to conserve space within the stylus 100.

In a further embodiment, the eraser 130 comprises a wiping head 131 and a wiping head holder 132, and the wiping head 131 is fixed in the wiping head holder 132, and the wiping head holder 132 is detachably fixed at the erasing end C of the stylus 100. When the wiping head 131 is damaged or used to some extent, the wiping head cartridge 132 can be removed from the wiping end C of the stylus 100 and replaced with a new wiping member 130.

In further embodiments, the means by which the wiper head mount 132 is removably secured includes a threaded securement, a magnet securement, or a snap securement. When the wiping head seat 132 is fixed by screw threads, the wiping head seat 132 is provided with a threaded hole 133 (see fig. 4), the stylus pen 100 further includes a threaded seat 134 (see fig. 3) adapted to the threaded hole 133, and the wiping head seat 132 is detachably fixed at the erasing end C of the stylus pen 100 through the threaded hole 133 and the threaded seat 134. In a further embodiment, an electrode 135 is further disposed at one end of the wiping head 131, and the wiping head 131 is connected to the second pressure sensor 122 through the electrode 135 and the second elastic member J2. In this embodiment, the wiping head 131 is a conductive soft silicone rubber head, and can be used to transmit an electromagnetic signal of the second frequency, and when the conductive soft silicone rubber head is erased, the conductive soft silicone rubber head contacts with the handwriting board 200, and directly transmits the electromagnetic signal of the second frequency to the handwriting board 200 through the conductive soft silicone rubber head, so that the coordinates of the electromagnetic signal of the second frequency acquired by the handwriting board 200 are more accurate. It will be appreciated that in other embodiments, the wiping head 130 may be a non-conductive wiping rubber head.

In a further embodiment, cartridge 110 is a swappable cartridge. That is, the erasable cartridge is adapted to the erasing member 130, and the contents written with the erasable cartridge can be erased by the erasing member 130. The erasable pencil lead can be a pencil, a water-based pen, an oil-based pen and the like with various hardness.

Referring to fig. 3 again, in a further embodiment, a power source 151 is further disposed in the housing 150, and the power source 151 is connected to the first pressure sensor 121, the second pressure sensor 122, and the circuit board 140. It is understood that the power source 151 may be a rechargeable power source or a battery, such as a lithium battery or the like.

In a further embodiment, a fixing bracket 152 is further provided in the housing 150, and the fixing bracket 152 is used for fixing the circuit board 140.

In a further embodiment, wireless communication circuitry 141 is included in circuit board 140. It is understood that the wireless communication circuit 141 may be integrated in the circuit board 140. Wireless communication circuit 141 is used to transmit the sensing signal of stylus 100. Wherein the wireless communication circuit 141 may be one of bluetooth, WIFI, NFC (near field communication). It will be appreciated that when the pen 100 is used in conjunction with the tablet 200, the tablet 200 has a wireless communication circuit therein corresponding to the pen 100.

It is to be understood that the stylus 100 provided in the above-described embodiments is equally applicable to the stylus 100 in the handwriting input apparatus 10 described below.

Referring to fig. 5, the handwriting input apparatus 10 of the present invention further provides a handwriting input apparatus 10, where the handwriting input apparatus 10 includes a handwriting pen 100 and a handwriting board 200, the handwriting board 200 includes a signal detection unit 210 and a processing unit 220, the signal detection unit 210 is configured to detect and receive a sensing signal generated by the handwriting pen 100, and the processing unit 220 is configured to determine an operating mode of the handwriting pen 100 according to the sensing signal of the handwriting pen 100 received by the signal detection unit 210. The operation mode of the stylus 100 includes a writing mode and an erasing mode. When the processing unit 220 determines that the operation mode of the stylus 100 is the writing mode, the processing unit 220 determines an electronic writing trace of the stylus 100 according to the received sensing signal of the stylus 100, and stores data of the electronic writing trace. When the processing unit 220 determines that the working mode of the stylus 100 is the erasing mode, the processing unit 220 determines the electronic erasing trace of the stylus 100 according to the received sensing signal of the stylus 100, determines the electronic writing trace to be erased correspondingly according to the electronic erasing trace, and controls to delete the stored data corresponding to the electronic writing trace. It is understood that the writing mode and the erasing mode can be switched repeatedly according to actual requirements.

The handwriting input device 10 provided by the invention has two modes of writing and erasing, and corresponding data can be synchronously stored and deleted in the handwriting board 200 when the handwriting pen 100 writes and erases, so that the data stored in the handwriting board 200 is consistent with the written content after writing or erasing.

In some embodiments, the processing unit 220 further synchronously controls the external device 300 to display the electronic writing track when determining the electronic writing track of the stylus 100 according to the received sensing signal of the stylus 100 and storing data corresponding to the electronic writing track, and the processing unit 220 further synchronously controls the external device 300 to correspondingly erase the electronic writing track when determining the electronic writing track to be correspondingly erased according to the electronic erasing track and deleting the stored data corresponding to the electronic writing track, that is, cancels display of the correspondingly erased electronic writing track. Therefore, according to the content written or erased by the current handwriting pen, the corresponding content can be correspondingly displayed or erased on the external device 300, so that the final display effect of the user on the external device 300 can be synchronized in the writing process and the modifying and erasing process, and the user experience is improved.

In a further embodiment, the sensing signal is an electromagnetic signal with a specific frequency, and the processing unit 220 determines the operation mode of the stylus 100 according to the received sensing signal of the stylus 100, including: the processing unit 220 determines the operation mode of the stylus pen 100 according to the frequency of the electromagnetic signal of the stylus pen 100 received by the signal detecting unit 210. The processing unit 220 has an identification circuit capable of identifying electromagnetic signals with different frequencies, and the processing unit 220 identifies the frequency of the electromagnetic signal according to the currently received electromagnetic signal and then determines the operating mode of the stylus 100 according to the identified frequency of the electromagnetic signal.

In some embodiments, the processing unit 220 determines the operation mode corresponding to the identified frequency of the electromagnetic signal according to a correspondence table between the frequency of the electromagnetic signal and the operation mode, which is pre-stored in the tablet 200.

In a further embodiment, the processing unit 220 determines the electronic writing trajectory of the stylus 100 according to the received sensing signal of the stylus 100, including: the processing unit 220 determines the electronic writing trace according to the coordinates and the coordinate changes of the electromagnetic signal received by the signal detecting unit 210 from the stylus pen 100. The processing unit 220 determines the electronic erasing trace of the stylus 100 according to the received sensing signal of the stylus 100, including: the processing unit 220 determines the electronic erasing trace according to the coordinates and the coordinate change of the electromagnetic signal received by the signal detecting unit 210 from the stylus pen 100.

In some embodiments, the signal detecting unit 200 may include a plurality of induction coils distributed in an array, and all the induction coils are electrically connected to the processing unit 220, and when the induction coils sense the induction signal of the stylus pen 100, the induction coils send the induction signal to the processing unit 220, and the processing unit 220 obtains the coordinate information according to the induction coil that currently sends the electromagnetic signal.

In a further embodiment, the processing unit 220 determines the operation mode of the stylus pen 100 according to the frequency of the received electromagnetic signal of the stylus pen 100, including the processing unit 220 determining the operation mode of the stylus pen 100 as the writing mode when the electromagnetic signal of the stylus pen 100 received by the signal detecting unit 210 is the electromagnetic signal with the first frequency, and the processing unit 220 determining the operation mode of the stylus pen 100 as the erasing mode when the electromagnetic signal of the stylus pen 100 received by the signal detecting unit 120 is the electromagnetic signal with the second frequency. Wherein the first frequency is different from the second frequency.

Referring to fig. 6 and 7 together, in a further embodiment, the stylus 100 includes a first pressure sensor 101, a second pressure sensor 102, a processor 103, and a signal generator 104. The first pressure sensor 120 is used to generate a first pressure signal when sensing the pressure at the writing end S side, and the second pressure sensor 102 is used to generate a second pressure signal when sensing the pressure at the erasing end C. After the processor 103 of the stylus pen 100 receives the first pressure signal sent by the first pressure sensing module 101, the control signal generator 104 generates an electromagnetic signal with a first frequency, and after the processor 103 of the stylus pen 100 receives the second pressure signal sent by the second pressure sensing module 102, the control signal generator 104 generates an electromagnetic signal with a second frequency. That is, as shown in a of fig. 7, when the user uses the stylus pen 100 to write, the writing end S of the stylus pen 100 collides with the tablet 200, and the first pressure sensing module 120 senses the pressure of the writing end S to generate a first pressure signal. As shown in b of fig. 7, when the erasing end C of the stylus pen 100 is used to erase the written content to be erased due to a writing error or a special modification is required, at this time, the erasing end C of the stylus pen 100 collides with the tablet 200, and the second pressure sensing module 102 senses the pressure of the erasing end C to generate a second pressure signal.

In a further embodiment, the first pressure signal is also included in the electromagnetic signal of the first frequency generated by stylus 200. The processing unit 220 determines an electronic writing track of the stylus 100 according to the received sensing signal of the stylus 100, including: the processing unit 220 obtains a first pressure signal in the electromagnetic signal of the first frequency, and determines a track thickness value of the electronic writing track according to the first pressure signal and the change of the first pressure signal.

Referring to fig. 8, in a further embodiment, the handwriting input device 10 further includes a paper 400, the paper 400 is placed on the writing pad 200, the stylus 100 generates a sensing signal when writing or erasing on the paper 400, and writes a real writing track on the paper 400 or erases a corresponding real writing track. In this embodiment, it is possible to realize writing and erasing in synchronization with the paper 400, the tablet 200, and the external device 300 while actually writing (diagram a in fig. 8) and erasing (diagram b in fig. 87) on the paper 400. Therefore, when actual drawing or writing is performed, the real writing track is stored on the paper 400, the consistent electronic writing track data is also stored on the handwriting board 200, the consistent electronic writing track is displayed on the external equipment 300, and the practicability is better.

Referring to fig. 6 again, the writing pad 200 further includes a memory 230, where the memory 230 is used for storing the correspondence between the operating mode of the stylus 100 and the frequency of the electromagnetic signal, and the data of the electronic writing track and the data of the electronic erasing track corresponding to the erasing. Also included in tablet 200 is communication unit 240, communication unit 240 being configured to transmit the operation mode of stylus 100 and the written electronic writing trace or erased electronic erasing trace to external device 300 and to display them in external device 300. Wherein the communication unit 240 may be one of bluetooth, WIFI, NFC (near field communication). It is understood that, when the tablet 200 is used with the external device 300, the external device 300 has a communication unit corresponding to the tablet 200.

The processing unit 220 may be a central processing unit, a single chip, a digital signal processor, a microcontroller, or the like. The memory 230 may be a solid state memory, a memory card, or the like.

The external device 300 may be a mobile phone, a tablet computer, or the like, and is installed with application software (APP) that is matched with the handwriting input device 10.

Referring to fig. 9, the present invention further provides another writing control method, which includes the following steps.

Determining an operation mode of the stylus pen 100 according to the received sensing signal of the stylus pen 100 (S100); the operation mode of the stylus 100 includes a writing mode and an erasing mode.

When the operation mode of the stylus pen 100 is determined to be the writing mode, an electronic writing trace of the stylus pen 100 is determined according to the received sensing signal of the stylus pen 100, and data of the electronic writing trace is stored (S110).

When the working mode of the stylus pen 100 is determined to be the erasing mode, an electronic erasing track of the stylus pen 100 is determined according to the received sensing signal of the stylus pen 100, a corresponding erased electronic writing track is determined according to the electronic erasing track, and the stored data of the corresponding electronic writing track is controlled to be deleted (S120).

The two writing and erasing modes are determined by receiving the induction signal of the handwriting pen 100, and when the handwriting pen 100 writes and erases, corresponding data can be synchronously stored and deleted in the handwriting board 200, so that the data stored in the handwriting board 200 is consistent with the written content after writing or deleting.

It will be appreciated that the writing mode and the erasing mode may be operated repeatedly during writing.

In some embodiments, the external device 300 is further synchronously controlled to display the electronic writing track when the electronic writing track of the stylus 100 is determined according to the received sensing signal of the stylus 100 and data corresponding to the electronic writing track is stored, and the external device 300 is also synchronously controlled to correspondingly erase the corresponding electronic writing track when the electronic erasing track is determined according to the electronic erasing track and the stored data corresponding to the electronic writing track is controlled to be deleted, that is, the correspondingly erased electronic writing track is cancelled to be displayed. Therefore, according to the content written or erased by the current handwriting pen, the corresponding content can be correspondingly displayed or erased on the external device 300, so that the final display effect on the external device 300 can be synchronized in the writing process and the modifying and erasing process of a user, and the user experience is improved.

In a further embodiment, the sensing signal is an electromagnetic signal having a particular frequency, and determining the operational mode of stylus 100 based on the received sensing signal of stylus 100 includes determining the operational mode of stylus 100 based on the frequency of the received electromagnetic signal of stylus 100.

In some embodiments, the operation mode corresponding to the identified frequency of the electromagnetic signal is determined according to a correspondence table between the frequency of the electromagnetic signal and the operation mode, which is pre-stored in the tablet 200.

In a further embodiment, determining an electronic writing trajectory of stylus 100 based on the received sensing signals of stylus 100 includes determining an electronic writing trajectory based on coordinates and changes in coordinates of the received electromagnetic signals of stylus 100. Determining the electronic erase trajectory of stylus 100 based on the received sensing signals of stylus 100 includes determining the electronic erase trajectory based on the coordinates and changes in the coordinates of the received electromagnetic signals of stylus 100.

In a further embodiment, determining the operational mode of stylus 100 based on the frequency of the received electromagnetic signal of stylus 100 includes determining the operational mode of stylus 100 as a writing mode when the received electromagnetic signal of stylus 100 is an electromagnetic signal having a first frequency; and determining the operation mode of the stylus pen 100 as the erasing mode when the received electromagnetic signal of the stylus pen 100 is an electromagnetic signal having a second frequency. Wherein the first frequency is different from the second frequency.

Referring to FIG. 6, in a further embodiment, a stylus 100 includes a first pressure sensor 101, a second pressure sensor 102, a processor 103, and a signal generator 104. The first pressure sensing module 101 is used for generating a first pressure signal when sensing the pressure of the writing end, and the second pressure sensing module 102 is used for generating a second pressure signal when sensing the pressure of the wiping end. The processor 103 controls the signal generator 104 to generate an electromagnetic signal of a first frequency upon receiving the first pressure signal, and the processor 103 controls the signal generator 104 to generate an electromagnetic signal of a second frequency upon receiving the second pressure signal.

In a further embodiment, the electromagnetic signal of the first frequency further includes the first pressure signal, and the received sensing signal of the stylus 100 determines the electronic writing track of the stylus 100, including acquiring the first pressure signal of the electromagnetic signal of the first frequency, and determining the track thickness value of the electronic writing track according to the first pressure signal and the change thereof.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

A writing control method is applied to a stylus; the handwriting pen can perform handwriting input on a handwriting board, and comprises a writing end, an erasing end and a working end identification unit connected with the writing end and the erasing end, wherein when the writing end or the erasing end operates on the handwriting board, the working end identification unit generates different identification signals, and the writing control method comprises the following steps:

generating a corresponding induction signal according to the identification signal generated by the working end identification unit, wherein the induction signal is used for determining the working mode of the stylus pen; and

transmitting a corresponding induction signal to the handwriting board; and

and controlling the handwriting board to respond to the sensing signal and determine the current working mode of the handwriting pen, wherein the working mode comprises a writing mode and an erasing mode.
The writing control method of claim 1, wherein the induction signal is an electromagnetic signal having a specific frequency, and the electromagnetic induction signal having different frequencies is generated according to different identification signals.
The writing control method of claim 1, wherein the working end recognition unit includes a first pressure sensing module and a second pressure sensing module, the recognition signal includes a first pressure signal and a second pressure signal, the first pressure sensing module generates the first pressure signal when sensing that the writing end performs handwriting input on the handwriting pad, and the second pressure sensing module generates the second pressure signal when sensing that the erasing end performs erasing on the handwriting pad.
The writing control method of claim 3, wherein the generating of the corresponding sensing signal according to the recognition signal, the sensing signal being used for determining the operation mode of the stylus pen, comprises:

when the induction signal sent to the handwriting board is generated according to the first pressure signal, the handwriting board determines that the working mode of the handwriting pen is the writing mode, determines the electronic writing track according to the induction signal, and stores the data of the electronic writing track.
The writing control method of claim 3, wherein the generating of the corresponding sensing signal according to the recognition signal, the sensing signal being used for determining the operation mode of the stylus pen, comprises:

when the induction signal sent to the handwriting board is generated according to the second pressure signal, the handwriting board determines that the working mode of the handwriting pen is the erasing mode, determines an electronic erasing track according to the induction signal, determines the electronic writing track to be correspondingly erased according to the electronic erasing track, and controls to delete the stored data corresponding to the electronic writing track.
The writing control method of claim 4, wherein the sensing signal further comprises a first pressure signal; and the handwriting board acquires a first pressure signal in the induction signal and determines the track thickness value of the electronic writing track according to the first pressure signal and the change of the first pressure signal.
A stylus pen is characterized by comprising a shell, a pen core, an erasing piece, a working end identification element and a circuit board; the circuit board comprises a processor; the pen refill, the circuit board and the working end identification element are accommodated in the shell, a pen point of the pen refill is exposed out of one end of the shell, the erasing piece is arranged at the other end, opposite to the shell, of the shell, and the working end identification element is connected with the pen refill and the erasing piece; when the pen core or the erasing piece performs writing operation on the writing board, the working end identification element generates different identification signals, and the processor in the circuit board generates different induction signals according to the different identification signals.
The stylus of claim 7, wherein the working end recognition element comprises a first pressure sensor and a second pressure sensor, the recognition signal comprising a first pressure signal and a second pressure signal, the first pressure sensor generating the first pressure signal upon sensing a handwriting input by the pen core on the tablet, the second pressure sensor generating the second pressure signal upon sensing an erasure on the tablet by the erasure.
The stylus of claim 8, wherein the processor in the circuit board generates an electromagnetic signal having a first frequency upon receiving a first pressure signal and the processor in the circuit board generates an electromagnetic signal having a second frequency upon receiving a second pressure signal.
The stylus of claim 9, further comprising an electromagnetic coil in the housing, the circuit board being coupled to the electromagnetic coil and the first pressure sensor, the processor of the circuit board controlling the electromagnetic coil to generate an electromagnetic signal having a first frequency upon receiving a first pressure signal.
The stylus of claim 9, further comprising a wiper signal board in the housing, the circuit board coupled to the wiper signal board and the second pressure sensor, the processor of the circuit board controlling the wiper signal board to generate an electromagnetic signal having a second frequency upon receiving a second pressure signal.
The stylus of claim 9, wherein the eraser member includes a wiper head and a wiper head mount, the wiper head mount being disposed at the eraser end of the housing and the wiper head being secured in the wiper head mount, the wiper head mount being removably secured to the eraser end of the stylus.
The stylus of claim 12, wherein the means for removably securing the wiper head mount comprises a threaded securement, a magnet securement, or a snap securement.
The stylus of claim 7, wherein the cartridge is a erasable cartridge.
A handwriting input apparatus, characterized in that said handwriting input apparatus comprises:

a stylus pen; and

a writing pad, the writing pad comprising:

the signal detection unit is used for detecting and receiving an induction signal generated by the handwriting pen;

the processing unit is used for determining the working mode of the stylus pen according to the sensing signal of the stylus pen received by the signal detection unit; the working modes of the stylus comprise a writing mode and an erasing mode; when the processing unit determines that the working mode of the stylus pen is a writing mode, determining an electronic writing track of the stylus pen according to the received sensing signal of the stylus pen, and storing data of the electronic writing track; and when the processing unit determines that the working mode of the stylus pen is the erasing mode, determining an electronic erasing track of the stylus pen according to the received sensing signal of the stylus pen, determining an electronic writing track to be erased correspondingly according to the electronic erasing track, and controlling to delete the stored data corresponding to the electronic writing track.
The handwriting input apparatus of claim 15, wherein said processing unit further synchronously controls the external device to display the electronic writing trace when determining the electronic writing trace of the stylus according to the received sensing signal of the stylus and storing data corresponding to the electronic writing trace; and the processing unit is also used for synchronously controlling the external equipment to correspondingly erase the corresponding electronic writing track when the electronic writing track to be correspondingly erased is determined according to the electronic erasing track and the stored data of the corresponding electronic writing track is controlled to be deleted.
The handwriting input apparatus of claim 15, wherein the induction signal is an electromagnetic signal with a specific frequency, and the processing unit determines the operation mode of the stylus according to the received induction signal of the stylus, comprising: the processing unit determines the working mode of the stylus pen according to the frequency of the electromagnetic signal of the stylus pen received by the signal detection unit.
The handwriting input apparatus of claim 17, wherein said processing unit determines the electronic writing trace of the stylus based on the received sensing signal of the stylus, comprising: the processing unit determines an electronic writing track according to the coordinates of the electromagnetic signals of the handwriting pen received by the signal detection unit and the change of the coordinates;

the processing unit determines an electronic erasing track of the stylus pen according to the received sensing signal of the stylus pen, and the processing unit comprises: the processing unit determines the electronic erasing track according to the coordinate of the electromagnetic signal received by the signal detection unit and the change of the coordinate.
The handwriting input apparatus of claim 17, wherein the processing unit determines the operating mode of the stylus based on the frequency of the received electromagnetic signal of the stylus, comprising:

the processing unit determines that the working mode of the stylus pen is a writing mode when the electromagnetic signal of the stylus pen received by the signal detection unit is an electromagnetic signal with a first frequency; and

and the processing unit determines that the working mode of the stylus pen is the erasing mode when the electromagnetic signal of the stylus pen received by the signal detection unit is the electromagnetic signal with the second frequency.
The handwriting input apparatus of claim 19, wherein said stylus comprises a first pressure sensor, a second pressure sensor, a processor and a signal generator; the first pressure sensor is used for generating a first pressure signal when sensing the pressure on the writing end side, the second pressure sensor is used for generating a second pressure signal when sensing the pressure on the erasing end side, the processor controls the signal generator to generate an electromagnetic signal with the first frequency when receiving the first pressure signal, and the processor controls the signal generator to generate an electromagnetic signal with the second frequency when receiving the second pressure signal.
The handwriting input apparatus of claim 20, wherein said electromagnetic signal of the first frequency generated by the stylus further comprises said first pressure signal, and said processing unit determines the electronic writing trace of the stylus based on the received sensing signal of the stylus, comprising: the processing unit acquires a first pressure signal in the electromagnetic signal with the first frequency, and determines a track thickness value of the electronic writing track according to the first pressure signal and the change of the first pressure signal.
The handwriting input apparatus of claim 15, further comprising a paper sheet, wherein the paper sheet is placed on the handwriting pad, and the handwriting pen generates a sensing signal when writing or erasing on the paper sheet, and writes a real writing trace on the paper sheet or erases a corresponding real writing trace.