WO2019090766A1 - 一种写字板笔迹校准方法及写字板 - Google Patents

一种写字板笔迹校准方法及写字板 Download PDF

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Publication number
WO2019090766A1
WO2019090766A1 PCT/CN2017/110699 CN2017110699W WO2019090766A1 WO 2019090766 A1 WO2019090766 A1 WO 2019090766A1 CN 2017110699 W CN2017110699 W CN 2017110699W WO 2019090766 A1 WO2019090766 A1 WO 2019090766A1
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WIPO (PCT)
Prior art keywords
writing
signal
tablet
calibration
stylus
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PCT/CN2017/110699
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English (en)
French (fr)
Inventor
叶泽钢
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深圳市柔宇科技有限公司
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Publication date
Application filed by 深圳市柔宇科技有限公司 filed Critical 深圳市柔宇科技有限公司
Priority to PCT/CN2017/110699 priority Critical patent/WO2019090766A1/zh
Priority to CN201780096682.2A priority patent/CN111316206A/zh
Publication of WO2019090766A1 publication Critical patent/WO2019090766A1/zh

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    • G—PHYSICS
    • 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

Definitions

  • the present invention relates to the field of writing boards, and more particularly to a writing pad handwriting calibration method and a writing pad.
  • the tablet determines the position information of the writing point by detecting the writing signal sent by the received stylus, and then displays the writing trajectory.
  • the detection signal is relatively accurate and does not affect the determination of the writing track.
  • the paper is relatively thick, it will affect the reception of the writing signal from the stylus, and the electrostatic effect of the paper itself will cause a large deviation in the writing trajectory.
  • the present invention provides a tablet handwriting calibration method, including the following steps:
  • the present invention also provides a writing tablet handwriting calibration method, comprising the following steps:
  • the present invention also provides a writing board that calibrates a writing handwriting using the above-described tablet writing handwriting calibration method.
  • the present invention establishes a preset linear table including a correspondence relationship between an induced signal and an offset by pre-measuring a deviation amount of a writing point at which a different sensing signal is received.
  • the writing point is calibrated using the preset linear table and the writing trajectory to obtain a more accurate writing trajectory.
  • FIG. 1 is a schematic flow chart of a first embodiment of a method for calibrating a tablet writing handwriting according to the present invention
  • FIG. 2 is a schematic diagram of determining an offset direction according to the present invention.
  • FIG. 3 is a schematic diagram of the present invention using a plane coordinate system to determine an offset direction
  • FIG. 4 is a schematic structural view of a first embodiment of a tablet according to the present invention.
  • FIG. 5 is a schematic flow chart of a second embodiment of a method for calibrating a tablet writing handwriting according to the present invention.
  • FIG. 6 is a schematic structural view of a second embodiment of a tablet according to the present invention.
  • FIG. 1 is a schematic flow chart of a first embodiment of a method for calibrating a tablet writing handwriting according to the present invention.
  • the tablet handwriting calibration method is applied to a tablet with a stylus, and includes the following steps.
  • S1 measuring an offset of the received intensity point of the different intensity sensing signals, and establishing a preset linear table including the correspondence between the sensing signals and the offset.
  • the preset linear table of the present invention is obtained by actual measurement, and the measuring process is: placing a writing object on the writing board, such as paper, writing on the writing object using a stylus, and receiving the writing signal from the stylus pen. , generating an inductive signal.
  • the standard writing point on the writing board corresponding to the writing stroke of the writing pen is measured in advance, and the actual writing point is calculated based on the received sensing signal.
  • the actual writing point is compared to the standard writing point to obtain an offset.
  • the offset under different thickness writing objects is measured, and a preset linear table including the corresponding relationship between the sensing signal and the offset is established. It can be understood that the writing of different materials is different due to the different electrical properties of different materials.
  • the preset linear table corresponding to the object is different, and the preset linear table of the writing object to be used can be determined by actual measurement.
  • the preset linear table is stored in memory for recall during writing.
  • the writing object selects the paper, and the paper of different thickness is placed on the writing board, the standard writing point of the stylus is measured and recorded in advance (that is, the writing measurement is performed without the paper being placed), and the different paper thicknesses are separately measured.
  • the actual writing point of the different intensity sensing signals is received, and the actual writing point is compared with the standard writing point to obtain an offset, and a preset linear table in which the sensing signal is offset with the offset is established.
  • the offsets of the different intensity sensing signals and the writing points are measured under different paper thicknesses, and the correspondence between the paper thickness and the sensing signals is established. Further, according to the correspondence between the sensing signal and the offset, the correspondence between the thickness of the paper and the offset is obtained.
  • S2 The writing signal sent by the received stylus generates a sensing signal to obtain position information corresponding to the writing point.
  • the tablet receives the writing signal from the stylus and generates a sensing signal, and obtains the position information of the writing point according to the received sensing signal. Further, determining whether the sensing signal is less than a preset intensity value, if less than a preset intensity value, indicating that there is a writing object on the writing board, the sensing signal is blocked by the writing object or the thickness of the writing object is weakened, and the obtained writing is performed.
  • the position information of the point is offset.
  • the sensing signal can be a capacitive signal, an electromagnetic signal, a voltage signal, a current signal, or the like.
  • the tablet uses a flexible sensor (FS) to detect the writing signal from the stylus to generate an inductive signal.
  • FS flexible sensor
  • the writing point of the embodiment is located in the enclosed area of the signal detecting channel, and the farther the distance from the detecting channel is, the more likely the offset of the writing point is.
  • S3 obtaining a calibration amount according to a preset linear table and a writing track corresponding to the sensing signal, and calibrating the position information.
  • the detected sensing signal is less than the preset intensity value ⁇
  • the preset linear table corresponding to the sensing signal is called, and the calibration quantity is obtained by the preset linearity table and the writing track, and the position information is calibrated, wherein the writing track is a writing handwriting that has appeared on the writing board in the preset time.
  • the calibration amount in the preset linear table is also different for different induced signal strengths.
  • the weaker the induced signal strength the greater the amount of calibration in the preset linear table.
  • the tablet receives a certain induction letter No. ⁇ , automatically adjusts the calibration amount in the preset linear table corresponding to the intensity of the induced signal according to the intensity of the sensing signal.
  • the calibration quantity includes an offset quantity and an offset direction, so obtaining the calibration quantity according to the preset linear table and the writing track corresponding to the sensing signal includes: calling a corresponding preset linear table according to the sensing signal, and acquiring the calibration quantity Offset; The offset direction of the calibration amount is obtained according to the writing track corresponding to the sensing signal.
  • FIG. 2 it is a schematic diagram of the present invention for determining the direction of the offset. There are two ways of obtaining the offset direction of the calibration amount in the present invention.
  • the first acquisition mode: acquiring the offset direction in the calibration quantity according to the writing trajectory corresponding to the sensing signal comprises: acquiring the offset direction of the calibration quantity according to the changing trend of the writing trajectory corresponding to the sensing signal. For example, if the writing trajectory before the writing point is a straight line, the writing point should be in the direction in which the straight line extends, and the offset direction can be obtained according to the changing trend. For another example, if the writing track before the writing point is a curve, the writing point should determine the offset direction according to the curvature of the curve.
  • the second obtaining mode is: acquiring an offset direction in the calibration quantity according to the writing track corresponding to the sensing signal, including: a direction in which the writing point corresponding to the sensing signal is closest to the last distance in the writing track is an offset direction.
  • the upper point is written normally, and the writing point where the deviation occurs is determined according to the relative direction of the upper point. Therefore, in judging the offset direction of the moving point of the writing point, it is necessary to first determine the writing point relative to the previous writing.
  • the direction in which the writing point needs to be offset is then determined based on the direction of the shortest coordinate component.
  • the offset direction in the correction process is determined by the shortest distance, wherein the point A is the last standard point and the point B is the point to be corrected.
  • the system measures the position of point B relative to point A to be decomposed to XY coordinates, that is, B is shifted to XI with respect to A to the right, and is shifted downward by Y1. Since XI is smaller than Y1, XI is the shortest distance, so The direction in which the defect is corrected is the same as the direction of the shortest distance XI, that is, corrected to the right.
  • the system measures the position of the C point relative to the defect to the ⁇ coordinate, that is, C is shifted to the right by X2 with respect to A, and is shifted downward by Y2, since ⁇ 2 is smaller than ⁇ 2, that is, ⁇ 2 is the shortest distance, so The direction in which point C is corrected is the same as the direction of the shortest distance ⁇ 2, that is, downward correction.
  • the calibration size of the writing point is determined by the calibration amount, the position information is calibrated according to the calibration direction and the calibration size, and the calibrated writing point is displayed on the tablet.
  • a preset linear table including a correspondence relationship between the sensing signal and the offset is established by measuring in advance the amount of deviation of the writing point of the different sensing signals.
  • the calibration scale is used to determine the calibration size (calibration distance)
  • the calibration direction is used to determine the calibration direction
  • the writing point is calibrated to obtain a more accurate writing trajectory, so that the writing board is placed on the paper. It can still be used in thick cases.
  • the present invention further provides a tablet, the tablet includes a processor, and the processor is configured to execute a computer program stored in the memory to implement the tablet handwriting calibration method.
  • the tablet includes a processor
  • the processor is configured to execute a computer program stored in the memory to implement the tablet handwriting calibration method.
  • FIG. 4 is a schematic structural view of a first embodiment of a tablet according to the present invention.
  • the tablet includes a stylus, and the tablet includes a memory and a processor.
  • the memory is used to store the preset linear table, wherein the preset linear table is obtained by actual measurement, and the measurement process refers to the first embodiment, and details are not described herein again.
  • the offset of the writing point of the different intensity sensing signals is measured, and a preset linear table including the corresponding relationship between the sensing signal and the offset is established.
  • the processor obtains a calibration amount according to the preset linear table and the writing track corresponding to the sensing signal, and calibrates the position information of the writing point.
  • the processor includes a first processing unit and a second processing unit, wherein the first processing unit acquires an offset in the calibration amount according to the preset linear table corresponding to the sensing signal; and the second processing unit corresponds to the sensing signal according to the sensing signal
  • the writing track acquires the offset direction of the calibration amount.
  • the calibration direction of the writing point is determined by the offset direction
  • the calibration size of the writing point is determined by the offset
  • the processor calibrates the position information according to the calibration direction and the calibration size.
  • FIG. 5 is a schematic flow chart of a second embodiment of a method for calibrating a tablet writing handwriting according to the present invention.
  • the tablet handwriting calibration method is applied to a tablet including a writing pen, and includes the following steps:
  • T1 Detecting the signal strength of the written signal sent by the received stylus, and determining whether the signal strength is less than a preset intensity value.
  • the sensing signal received by the writing board is weakened, thereby affecting the determination of the position of the writing point.
  • the signal strength of the written signal sent by the received stylus is detected, and it is further determined whether the signal strength is less than a preset intensity value, wherein the preset intensity value is a system setting.
  • the tablet uses a flexible sensor (Flexibl e Sensor, FS) to detect the writing signal from the stylus to generate an inductive signal.
  • FS Flexible sensor
  • T2 If the signal strength is less than the preset intensity value, the signal strength of the writing signal sent by the stylus is increased, and the writing point is corrected.
  • the stylus includes a boosting circuit for increasing the signal strength of the writing signal, and increasing the signal strength of the writing signal sent by the stylus includes: transmitting an adjustment signal to the stylus through the signal transmitting channel, and the boosting circuit in the stylus is based on The adjustment signal increases the signal strength of the written signal. It will be appreciated that the stylus also includes a battery for powering, a power management unit, a controller, and the like.
  • the tablet generates an adjustment signal according to the sensing signal, and then sends an adjustment signal to the stylus through the signal transmission channel, and the stylus increases the signal strength of the writing signal according to the adjustment signal.
  • the adjustment signal is a different frequency signal.
  • the stylus converts the different frequency signals into a strong and weak indication for adjusting the boosting unit, and adjusts the writing signal output by the stylus.
  • FIG. 6 is a schematic structural view of a second embodiment of a tablet according to the present invention.
  • the tablet includes a stylus, and the tablet includes: a detecting unit and a determining unit, wherein the detecting unit is configured to detect a signal strength of the writing signal sent by the stylus; the determining unit is connected to the detecting unit, and is configured to determine Whether the signal strength is less than the preset intensity value.
  • the stylus includes a boosting circuit that increases the signal strength of the writing signal in accordance with the adjustment signal.
  • the signal strength is less than the preset intensity value, the signal strength of the writing signal sent by the stylus is increased by the boosting circuit to calibrate the writing point.
  • the present invention determines a deviation amount that occurs when a writing point is received by measuring a different sensing signal in advance, and formulates a preset linear table including a correspondence relationship between the sensing signal and the offset. When the deviation of the sensing signal is detected, the writing point is calibrated by using the preset linear table and the writing trajectory, thereby obtaining a more accurate writing trajectory, so that the writing board can still be used normally when the paper is placed thick.

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  • General Engineering & Computer Science (AREA)
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Abstract

一种写字板笔迹校准方法及写字板，包括：测量接收不同强度感应信号时书写点的偏移量，建立包含感应信号与偏移量对应关系的预设线性表（S1）；由接收的手写笔发出的书写信号产生感应信号，得到对应书写点的位置信息（S2）；根据感应信号对应的预设线性表和书写轨迹获得校准量，对位置信息进行校准（S3）。当检测到感应信号出现偏差时，利用预设线性表和书写轨迹对书写点进行校准，从而获得更加准确的书写轨迹。

Description

一种写字板笔迹校准方法及写字板 技术领域
[0001] 本发明涉及写字板领域， 更具体地说， 涉及一种写字板笔迹校准方法及写字板 背景技术
[0002] 写字板通过检测接收的手写笔发出的书写信号来确定书写点的位置信息， 进而 显示书写轨迹。 在使用写字板过程中， 有吋需要在写字板上放置纸张后进行书 写， 在纸张比较薄的情况下， 检测信号比较准确， 不影响书写轨迹的确定。 但 是， 在纸张比较较厚吋， 会影响手写笔发出的书写信号的接收， 加之纸张本身 的静电效应， 导致书写轨迹出现较大的偏差。
技术问题
[0003] 本发明的目的在于提供写字板笔迹校准方法及写字板， 以解决上述现有技术存 在的问题。
问题的解决方案
技术解决方案
[0004] 本发明提供一种写字板笔迹校准方法， 包括下述步骤：
[0005] 由接收的手写笔发出的书写信号产生感应信号， 得到对应书写点的位置信息； [0006] 根据感应信号对应的预设线性表和书写轨迹获得校准量， 对位置信息进行校准
[0007] 本发明还提供一种写字板笔迹校准方法， 包括下述步骤：
[0008] 检测接收的手写笔发出的书写信号的信号强度， 判断信号强度是否小于预设强 度值；
[0009] 若是， 则增加手写笔发出的书写信号的信号强度， 对书写点进行校正。
[0010] 另， 本发明还提供一种写字板， 该写字板使用上述写字板笔迹校准方法对书写 笔迹进行校准。
发明的有益效果 有益效果
[0011] 本发明通过预先测量接收不同感应信号吋书写点出现的偏差量， 制定包含感应 信号与偏移量对应关系的预设线性表。 当检测到感应信号出现偏差吋， 利用预 设线性表和书写轨迹对书写点进行校准， 从而获得更加准确的书写轨迹。
对附图的简要说明
附图说明
[0012] 下面将结合附图及实施例对本发明作进一步说明， 附图中：
[0013] 图 1是本发明一种写字板笔迹校准方法的第一实施例的流程示意图；
[0014] 图 2是本发明确定偏移方向的示意图；
[0015] 图 3是本发明使用平面坐标系确定偏移方向的示意图；
[0016] 图 4是本发明一种写字板的第一实施例的结构示意图；
[0017] 图 5是本发明一种写字板笔迹校准方法的第二实施例的流程示意图；
[0018] 图 6是本发明一种写字板的第二实施例的结构示意图。
实施该发明的最佳实施例
本发明的最佳实施方式
[0019] 为了对本发明的技术特征、 目的和效果有更加清楚的理解， 现对照附图详细说 明本发明的具体实施方式。
[0020] 图 1是本发明一种写字板笔迹校准方法的第一实施例的流程示意图。
[0021] 具体的， 该写字板笔迹校准方法应用于具有手写笔的写字板中， 包括下述步骤
[0022] S1 : 测量接收不同强度感应信号吋书写点的偏移量， 建立包含感应信号与偏移 量对应关系的预设线性表。
[0023] 具体的， 本发明的预设线性表经实测得到， 测量过程为： 在写字板上放置书写 物， 例如纸张， 使用手写笔在书写物上书写， 手写板接收手写笔发出的书写信 号， 产生感应信号。 预先测量书写笔书写吋对应的写字板上的标准书写点， 根 据接收的感应信号算出实际书写点。 将实际书写点与标准书写点进行对比， 得 到偏移量。 测量不同厚度书写物下的偏移量， 建立包含感应信号与偏移量对应 关系的预设线性表。 可以理解， 因不同材料的电性不同， 所以不同材料的书写 物对应的预设线性表是不同的， 可通过实际测量确定需要使用的书写物的预设 线性表。 将预设线性表存储在存储器中， 用于在书写过程中调用。
[0024] 例如， 书写物选择纸张， 在写字板上放置不同厚度的纸张， 预先测量并记录手 写笔的标准书写点 (即在没有放置纸张的情况下进行书写测量)， 再分别测量不同 纸张厚度下接收不同强度感应信号吋的实际书写点， 将实际书写点与标准书写 点进行对比得到偏移量， 建立感应信号与偏移量对应关系的预设线性表。 进一 步， 分别测量不同纸张厚度下接收不同强度感应信号吋书写点的偏移量， 建立 纸张厚度与感应信号的对应关系。 进而根据感应信号与偏移量的对应关系， 得 到纸张厚度与偏移量的对应关系。
[0025] S2: 由接收的手写笔发出的书写信号产生感应信号， 得到对应书写点的位置信 息。
[0026] 具体的， 在实际书写过程中， 写字板接收手写笔发出的书写信号并产生感应信 号， 根据接收到的感应信号得到该书写点的位置信息。 进一步， 判断该感应信 号是否小于预设强度值， 若小于预设强度值， 说明此吋书写板上有书写物， 感 应信号因书写物的阻挡或因书写物的厚度变弱， 所得到的书写点的位置信息出 现偏移。 作为选择， 感应信号可为电容信号、 电磁信号、 电压信号、 电流信号 等。 优选地， 写字板使用柔性传感器 （Flexible Sensor, FS) 检测手写笔发出的 书写信号， 产生感应信号。
[0027] 可以理解， 本实施例的书写点位于信号检测通道围合区域内， 距离检测通道的 距离越远， 得到书写点越容易出现偏移。
[0028] S3： 根据感应信号对应的预设线性表和书写轨迹获得校准量， 对位置信息进行 校准。
[0029] 具体的， 经过判断， 当检测到的感应信号小于预设强度值吋， 说明书写点的位 置信息出现偏移， 需要进行校准。 调用感应信号对应的预设线性表， 由预设线 性表和书写轨迹获得校准量， 对位置信息进行校准， 其中， 书写轨迹为预设吋 间内已经在写字板上出现的书写笔迹。
[0030] 可以理解地， 对于不同的感应信号强度， 预设线性表中的校准量也不同。 感应 信号强度越弱， 预设线性表中的校准量就越大。 当写字板接收到某一个感应信 号吋， 根据感应信号的强度自动调取感应信号强度所对应的预设线性表中的校 准量进行使用。
[0031] 进一步， 校准量包括偏移量和偏移方向， 所以根据感应信号对应的预设线性表 和书写轨迹获得校准量包括： 根据感应信号调用对应的预设线性表， 获取校准 量中的偏移量； 根据感应信号对应的书写轨迹获取校准量的偏移方向。
[0032] 参考图 2， 是本发明确定偏移方向的示意图。 本发明中校准量的偏移方向有两 种获取方式。
[0033] 第一获取方式： 根据感应信号对应的书写轨迹获取校准量中的偏移方向包括： 根据感应信号对应的书写轨迹的变化趋势获取校准量的偏移方向。 例如， 该书 写点之前的书写轨迹为直线， 则书写点应在该直线的延长方向上， 根据该变化 趋势可得到偏移方向。 又例如， 该书写点之前的书写轨迹为曲线， 则书写点应 在根据该曲线的弧度确定偏移方向。
[0034] 第二获取方式： 根据感应信号对应的书写轨迹获取校准量中的偏移方向， 包括 ： 感应信号对应的书写点距离书写轨迹内上一点最近距离的方向为偏移方向。 在书写过程中， 上一点书写正常吋， 出现偏差的书写点要根据和上一点的相对 方向来确定， 所以， 在判断书写点移动的偏移方向吋， 需要先确定书写点相对 于上一书写点沿 XY坐标轴的两个坐标分量中的其中长度最短的坐标分量的方向
。 然后根据最短的坐标分量的方向确定书写点需要偏移的方向。
[0035]
[0036] 参考图 3， 进一步说明修正过程中的偏移方向通过最短距离确定， 其中， A点为 上一个标准点， B点为待修正点。
[0037] 系统测得 B点相对 A点的位置分解到 XY坐标， 就是 B相对于 A向右偏移了 XI， 向下偏移了 Yl， 由于 XI小于 Yl， 即 XI是最短距离， 因此对 Β点进行修正的方向 就是与最短距离 XI的方向相同， 即向右修正。
[0038] 系统测得 C点相对 Α点的位置分解到 ΧΥ坐标， 就是 C相对于 A向右偏移了 X2， 向下偏移了 Y2， 由于 Υ2小于 Χ2， 即 Υ2是最短距离， 因此对 C点进行修正的方向 就是与最短距离 Υ2的方向相同， 即向下修正。
[0039] 进一步， 通过上述步骤确定偏移量和偏移方向后， 由偏移方向确定书写点的校 准方向， 由校准量确定书写点的校准大小， 根据校准方向和校准大小对位置信 息进行校准， 将校准后的书写点在写字板上显示。
[0040] 综上， 本实施例通过预先测量接收不同感应信号吋书写点出现的偏差量， 制定 包含感应信号与偏移量对应关系的预设线性表。 当检测到感应信号出现偏差吋 ， 利用预设线性表确定校准大小 （校准距离） ， 利用书写轨迹确定校准方向， 对书写点进行校准， 从而获得更加准确的书写轨迹， 使写字板在放置纸张较厚 的情况下依然能够使用。
[0041] 另， 本发明还提供一种写字板， 该写字板包括处理器， 处理器用于执行存储器 中存储的计算机程序吋实现上述写字板笔迹校准方法。 具体校准过程可参考第 一实施例， 在此不再赘述。
[0042]
[0043] 图 4是本发明一种写字板的第一实施例的结构示意图。
[0044] 具体的， 该写字板包括手写笔， 写字板包括存储器和处理器。
[0045] 存储器用于存储预设线性表， 其中， 预设线性表通过实测得到， 测量过程参考 第一实施例， 在此不再赘述。 测量接收不同强度感应信号吋书写点的偏移量， 建立包含感应信号与偏移量对应关系的预设线性表。
[0046] 处理器根据感应信号对应的预设线性表和书写轨迹获得校准量， 对书写点的位 置信息进行校准。
[0047] 进一步， 处理器包括第一处理单元和第二处理单元， 其中， 第一处理单元根据 感应信号对应的预设线性表获取校准量中的偏移量； 第二处理单元根据感应信 号对应的书写轨迹获取校准量的偏移方向。
[0048] 由偏移方向确定书写点的校准方向， 由偏移量确定书写点的校准大小， 处理器 根据校准方向和校准大小对位置信息进行校准。
[0049]
[0050] 图 5是本发明一种写字板笔迹校准方法的第二实施例的流程示意图。
[0051] 具体的， 该写字板笔迹校准方法应用于包括书写笔的写字板， 包括下述步骤：
[0052] T1 : 检测接收的手写笔发出的书写信号的信号强度， 判断信号强度是否小于预 设强度值。 [0053] 具体的， 在使用手写笔过程中， 若书写板上有书写物， 例如纸张， 则会导致写 字板接收到的感应信号变弱， 进而影响书写点位置的确定。 本实施例检测接收 的手写笔发出的书写信号的信号强度， 并进一步判断信号强度是否小于预设强 度值， 其中， 预设强度值为系统设定。 优选地， 写字板使用柔性传感器 （Flexibl e Sensor, FS) 检测手写笔发出的书写信号， 产生感应信号。
[0054] T2: 若信号强度小于预设强度值， 则增加手写笔发出的书写信号的信号强度， 对书写点进行校正。
[0055] 具体的， 若信号强度小于预设强度值， 则做信号补偿， 通过增加手写笔发出的 书写信号的信号强度， 对书写点进行校正。
[0056] 进一步， 确定接收的信号强度与预设强度值的差值， 将该差值通过信号发送通 道发送至手写笔， 手写笔根据该差值确定调节信号， 增加手写笔发出的书写信 号的信号强度。
[0057] 手写笔包括用于增加书写信号的信号强度的增压电路， 增加手写笔发出的书写 信号的信号强度包括： 通过信号发送通道发送调节信号给手写笔， 手写笔中的 增压电路根据调节信号增加书写信号的信号强度。 可以理解， 手写笔还包括用 于供电的电池、 电源管理单元、 控制器等。
[0058] 一些实施例中， 写字板根据感应信号产生调节信号， 进而通过信号发送通道发 送调节信号至手写笔， 手写笔根据调节信号增加书写信号的信号强度。 优选地 ， 调节信号为不同频率信号。 手写笔将不同频率信号转换为用于调整增压单元 的强弱指示， 调节手写笔输出的书写信号。
[0059]
[0060] 图 6是本发明一种写字板的第二实施例的结构示意图。
[0061] 具体的， 该写字板包括手写笔， 写字板包括： 检测单元和判断单元， 其中， 检 测单元用于检测手写笔发出的书写信号的信号强度； 判断单元与检测单元连接 ， 用于判断信号强度是否小于预设强度值。
[0062] 手写笔包括根据调节信号增加书写信号的信号强度的增压电路。
[0063] 若信号强度小于预设强度值， 则通过增压电路增加手写笔发出的书写信号的信 号强度， 对书写点进行校准。 [0064] 本发明通过预先测量接收不同感应信号吋书写点出现的偏差量， 制定包含感应 信号与偏移量对应关系的预设线性表。 当检测到感应信号出现偏差吋， 利用预 设线性表和书写轨迹对书写点进行校准， 从而获得更加准确的书写轨迹， 使写 字板在放置纸张较厚的情况下依然能够正常使用。
[0065] 以上实施例只为说明本发明的技术构思及特点， 其目的在于让熟悉此项技术的 人士能够了解本发明的内容并据此实施， 并不能限制本发明的保护范围。 凡跟 本发明权利要求范围所做的均等变化与修饰， 均应属于本发明权利要求的涵盖 范围。

Claims

权利要求书
[权利要求 1] 一种写字板笔迹校准方法， 其特征在于， 包括：
由接收的手写笔发出的书写信号产生感应信号， 得到对应书写点的位 置 息；
根据所述感应信号对应的预设线性表和书写轨迹获得校准量， 对所述 位置信息进行校准。
[权利要求 2] 根据权利要求 1所述的写字板笔迹校准方法， 其特征在于， 所述感应 信号包括电容信号、 电磁信号、 电压信号、 电流信号中的一种或几种
[权利要求 3] 根据权利要求 1所述的写字板笔迹校准方法， 其特征在于， 在所述由 接收的手写笔发出的书写信号产生感应信号之前， 还包括： 测量接收不同强度所述感应信号吋书写点的偏移量， 建立包含所述感 应信号与偏移量对应关系的预设线性表。
[权利要求 4] 根据权利要求 3所述的写字板笔迹校准方法， 其特征在于， 所述测量 接收不同强度所述感应信号吋书写点的偏移量， 还包括：
测量不同纸张厚度下接收不同强度所述感应信号吋书写点的偏移量， 建立所述纸张厚度与感应信号的对应关系。
[权利要求 5] 根据权利要求 3或 4所述的写字板笔迹校准方法， 其特征在于， 所述根 据所述感应信号对应的预设线性表和书写轨迹获得校准量， 包括： 根据所述感应信号对应的预设线性表获取所述校准量中的偏移量； 根 据所述感应信号对应的书写轨迹获取所述校准量的偏移方向。
[权利要求 6] 根据权利要求 5所述的写字板笔迹校准方法， 其特征在于， 所述根据 所述感应信号对应的书写轨迹获取所述校准量中的偏移方向， 包括： 根据所述感应信号对应的书写轨迹的变化趋势获取所述校准量的偏移 方向。
[权利要求 7] 根据权利要求 5所述的写字板笔迹校准方法， 其特征在于， 所述根据 所述感应信号对应的书写轨迹获取所述校准量中的偏移方向， 包括： 所述感应信号对应的书写点距离所述书写轨迹内上一点最近距离的方 向为所述偏移方向。
根据权利要求 5所述的写字板笔迹校准方法， 其特征在于， 所述对所 述位置信息进行校准， 包括：
由所述偏移方向确定所述书写点的校准方向， 由所述校准量确定所述 书写点的校准大小， 根据所述校准方向和校准大小对所述位置信息进 行校准。
根据权利要求 1所述的写字板笔迹校准方法， 其特征在于， 所述书写 点位于信号检测通道围合区域内。
一种写字板， 其特征在于， 所述写字板包括处理器， 所述处理器用于 执行存储器中存储的计算机程序吋实现如权利要求 1-9任一项所述的 写字板笔迹校准方法。
一种写字板， 所述写字板包括手写笔， 其特征在于， 所述写字板包括 存储器和处理器；
存储器用于存储预设线性表， 其中， 测量接收不同强度感应信号吋书 写点的偏移量， 建立包含所述感应信号与偏移量对应关系的预设线性 表；
处理器根据所述感应信号对应的预设线性表和书写轨迹获得校准量， 对书写点的位置信息进行校准。
根据权利要求 11所述的写字板， 其特征在于， 所述处理器包括： 根据所述感应信号对应的预设线性表获取所述校准量中的偏移量的第 一处理单元； 根据所述感应信号对应的书写轨迹获取所述校准量的偏 移方向的第二处理单元；
由所述偏移方向确定所述书写点的校准方向， 由所述校准量确定所述 书写点的校准大小， 所述处理器根据所述校准方向和校准大小对所述 位置信息进行校准。
一种写字板笔迹校准方法， 其特征在于， 包括：
检测接收的手写笔发出的书写信号的信号强度， 判断所述信号强度是 否小于预设强度值； 若是， 则增加手写笔发出的书写信号的信号强度， 对书写点进行校正 根据权利要求 13所述的写字板笔迹校准方法， 其特征在于， 所述增加 手写笔发出的书写信号的信号强度， 包括：
根据所述信号强度与预设强度值的差值增加手写笔发出的书写信号的 信号强度。
根据权利要求 13所述的写字板笔迹校准方法， 其特征在于， 所述增加 手写笔发出的书写信号的信号强度， 包括：
通过信号发送通道发送调节信号至所述手写笔， 所述手写笔根据所述 调节信号增加所述书写信号的信号强度。
根据权利要求 13所述的写字板笔迹校准方法， 其特征在于， 所述增加 手写笔发出的书写信号的信号强度， 包括：
通过信号发送通道发送调节信号给所述手写笔， 所述手写笔中的增压 电路根据所述调节信号增加所述书写信号的信号强度。
一种写字板， 所述写字板包括手写笔， 其特征在于， 所述写字板包括 用于检测所述手写笔发出的书写信号的信号强度的检测单元； 以及与 所述检测单元连接、 用于判断所述信号强度是否小于预设强度值的判 断单元；
所述手写笔包括根据所述调节信号增加所述书写信号的信号强度的增 压电路；
若所述信号强度小于所述预设强度值， 则通过所述增压电路增加所述 手写笔发出的书写信号的信号强度， 对书写点进行校准。
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101833091A (zh) * 2009-03-12 2010-09-15 财团法人工业技术研究院 定位装置及系统及其相关的定位方法及误差校正方法
CN102253769A (zh) * 2011-08-12 2011-11-23 宁波易方教育科技发展有限公司 手写输入校准器及其校准方法
CN102760021A (zh) * 2011-04-29 2012-10-31 识骅科技股份有限公司 电阻式触摸屏的触摸轨迹检测方法
US20160062491A1 (en) * 2014-09-03 2016-03-03 Konica Minolta, Inc. Handwriting input device, method for obtaining handwriting information, and non-transitory computer-readable storage medium
CN105607764A (zh) * 2015-12-22 2016-05-25 汉王科技股份有限公司 轨迹输入装置及轨迹输入方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016164711A (ja) * 2015-03-06 2016-09-08 ブラザー工業株式会社 電子筆記処理プログラム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101833091A (zh) * 2009-03-12 2010-09-15 财团法人工业技术研究院 定位装置及系统及其相关的定位方法及误差校正方法
CN102760021A (zh) * 2011-04-29 2012-10-31 识骅科技股份有限公司 电阻式触摸屏的触摸轨迹检测方法
CN102253769A (zh) * 2011-08-12 2011-11-23 宁波易方教育科技发展有限公司 手写输入校准器及其校准方法
US20160062491A1 (en) * 2014-09-03 2016-03-03 Konica Minolta, Inc. Handwriting input device, method for obtaining handwriting information, and non-transitory computer-readable storage medium
CN105607764A (zh) * 2015-12-22 2016-05-25 汉王科技股份有限公司 轨迹输入装置及轨迹输入方法

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