WO2020199170A1 - 一种书写控制方法、书写板、手写输入装置和存储介质 - Google Patents

一种书写控制方法、书写板、手写输入装置和存储介质 Download PDF

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Publication number
WO2020199170A1
WO2020199170A1 PCT/CN2019/081316 CN2019081316W WO2020199170A1 WO 2020199170 A1 WO2020199170 A1 WO 2020199170A1 CN 2019081316 W CN2019081316 W CN 2019081316W WO 2020199170 A1 WO2020199170 A1 WO 2020199170A1
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Prior art keywords
writing
stylus
touch signal
controller
linear table
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PCT/CN2019/081316
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English (en)
French (fr)
Inventor
李贺
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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/CN2019/081316 priority Critical patent/WO2020199170A1/zh
Priority to CN201980079794.6A priority patent/CN113348432A/zh
Publication of WO2020199170A1 publication Critical patent/WO2020199170A1/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
    • 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

Definitions

  • This application relates to the technical field of writing boards, and specifically to a writing control method, writing boards, handwriting input devices and storage media.
  • the product with a stylus and a touch screen The touch position of the stylus is calculated from the power of the stylus received by each channel of the sensor on the touch screen.
  • the power of each channel on the sensor is different when the stylus tip is written at different positions. Pre-establish a correspondence table between the writing coordinates and the received power of each channel of the sensor to determine the position coordinates.
  • the touch position of the stylus pen is determined by the amount of power received by each channel or the power ratio, when the distance between the stylus pen and the touch screen changes, the power received by the channel on the sensor will also be affected, resulting in deviations in the writing track .
  • an embodiment of the present application provides a writing control method, including:
  • the measuring the touch signal of the stylus when writing by the writing board includes:
  • the determining the writing track of the handwriting pen when writing according to the corresponding linear table includes:
  • the writing track is generated according to the corrected touch coordinates.
  • the measuring the touch signal of the stylus when writing by the writing board includes:
  • the determining the corresponding linear table according to the touch signal includes:
  • the corresponding linear table is determined according to the power or the capacitance.
  • the determining the corresponding linear table according to the touch signal includes:
  • the linear table is re-determined according to the touch signal of the stylus.
  • the touch signal includes touch coordinates and power, or the touch signal includes touch coordinates and capacitance.
  • the determining the corresponding linear table according to the touch signal includes:
  • the correspondence table includes the correspondence between the touch signal and the linear table.
  • this embodiment provides a handwriting input device.
  • the handwriting input device includes a stylus pen and a writing pad.
  • the writing pad includes a controller, a screen, and a plurality of detection devices. At the bottom of the screen, each detection device corresponds to a known coordinate, and the top of the screen is used to place paper for writing by the stylus;
  • the controller is used to obtain the touch signal of the detection device when the stylus is writing; the controller is used to determine the corresponding linear table according to the touch signal; the controller is used to determine the corresponding linear table according to the corresponding linear
  • the table determines the writing track of the stylus when writing.
  • the controller is used to obtain the touch coordinates of the stylus when writing measured by the writing board; the controller is used to control the touch coordinates of the stylus when writing according to the corresponding linear table.
  • the control coordinates are corrected; the controller is used to generate the writing track according to the corrected touch coordinates.
  • the controller configured to obtain the touch signal of the detection device when the stylus is writing includes:
  • the controller is used to obtain the power or capacitance of the stylus when writing measured by the detector;
  • the controller is configured to determine the corresponding linear table according to the touch signal, including:
  • the controller is configured to determine the corresponding linear table according to the power or the capacitance.
  • the controller is used to re-determine the linear table according to the touch signal of the stylus.
  • the detection device is a power sensor or a capacitance sensor.
  • the writing board further includes a memory, and a corresponding relationship table is stored in the memory.
  • the corresponding relationship table includes the corresponding relationship between the touch signal and the linear table.
  • the control signal calls the corresponding linear table in the correspondence table.
  • this embodiment provides a writing board that includes a controller, a screen, and a plurality of detection devices.
  • the plurality of detection devices are arranged below the screen, and each detection device corresponds to one With known coordinates, the upper part of the screen is used to place paper for writing with a stylus;
  • the controller is used to obtain the touch signal of the detection device when the stylus is writing; the controller is used to determine the corresponding linear table according to the touch signal; the controller is used to determine the corresponding linear table according to the corresponding linear
  • the table determines the writing track of the stylus when writing.
  • this embodiment provides a storage medium that stores program instructions, and the program instructions are used to execute the writing control method provided in the first aspect after being called by a computer.
  • the writing control method, writing board, handwriting input device, and storage medium provided in the embodiments of the present application improve the accuracy of calling the linear table on the writing board by calling the linear tables corresponding to different touch signals, and make the recognized coordinates more accurate.
  • the formed writing track is more accurate.
  • Fig. 1 is a schematic diagram of the structure of a handwriting input device.
  • Figure 2 is a block diagram of the composition of the writing board.
  • FIG. 3 is a flowchart of the writing control method provided by this embodiment.
  • FIG 4 is a flowchart of the order determines that the detection range A n corresponding to the amount of M.
  • Figure 5 is a flowchart for determining the writing track.
  • the handwriting input device 1 includes a stylus 2 and a writing pad 4.
  • the writing pad 4 includes a controller 43, a memory 44, a screen 41, and a plurality of detection devices 42, which are arranged on the screen 41.
  • a plurality of detection devices 42 are distributed in a matrix, and each detection device 42 corresponds to a known coordinate.
  • the detection device 42 may be a power sensor or a capacitance sensor.
  • the upper part of the screen 41 is used to place the paper 3 for writing with the stylus pen 2.
  • the memory 44 stores a linear table, a corresponding relationship table including the corresponding relationship of the touch signal linear table, and program instructions for being called by the controller 43.
  • this embodiment provides a writing control method. Please refer to FIG. 3.
  • the writing control method includes step S100, step S200, and step S300. The detailed steps are as follows.
  • Step S100 measuring the touch signal of the stylus 2 when writing by the writing board 4.
  • the user will place the paper 3 on the writing board 4 and use the stylus 2 to write on the paper 3.
  • the content written by the stylus 2 will be displayed on the writing board 4 or stored on other electronic devices.
  • Other electronic devices can be devices with display functions such as computers and mobile phones.
  • the touch signal measured by the writing board 4 includes the detection amount M obtained by the detection device 42 and the touch coordinates of the stylus 2 when writing.
  • the detection device 42 of the writing board 4 can sense the approach of the stylus 2, and the detection device 42 in the writing board 4 obtains the corresponding detection amount M.
  • the detection amount M may be the power of the stylus pen 2, or the capacitance of the stylus pen 2, or other data signals of the stylus pen 2 that can be measured.
  • the excited detection device 42 corresponds to a known coordinate, so that the touch coordinate of the stylus 2 when writing can be obtained at the same time.
  • Step S200 Determine a corresponding linear table according to the touch signal.
  • the touch signal may include power or capacitance, and the corresponding linear table is determined according to the power or capacitance.
  • step S200 all the order ranges A need to be determined in advance, so as to select the corresponding order range A according to the detection amount M.
  • the order range A is a number set composed of continuous detection quantities M. Referring to FIG. 4, it is determined that all order ranges A include step S201, step S202, and step S203. The detailed steps are as follows.
  • Step S201 Obtain the detection amount M 0 of the detection device 42 when the stylus 2 touches the writing board 4 on which the paper 3 is not placed.
  • the stylus 2 is used to contact the writing board 4 where the paper 3 is not placed, and the detection device 42 is used to collect the detection amount M 0 at this time.
  • the detection quantity M 0 of the detection device 42 can be obtained by averaging, that is to say, when the writing board 4 is not placed on the writing board 4, the detection amount M 0 of the detection device 42 is obtained when the stylus 2 touches the writing board 4 , And take the average to get M 0 .
  • Step S202 Obtain the detection amount M 1 of the detection device 42 when the stylus pen 2 touches the writing board 4 on which the limit amount of paper 3 is placed.
  • a limit number of papers 3 are placed on the writing board 4, and the limit number of the papers 3 is determined based on the thickness of a single paper 3 and the limit height of the paper 3 allowed to be placed on the writing board 4. Then, the stylus 2 is used to touch the surface of the paper 3 at the highest position, and the detection device 42 is used to collect the detection amount M 1 at this time.
  • the detection device 42 detects the amount of M 1 can be obtained using the averaging mode, i.e., the limits placed on the number of sheets in the tablet case 3 of 4, 4 acquires the stylus contacts the tablet 2, the device 42 of the multi-detector Measured quantities, and take the average to get M 1 .
  • the averaging mode i.e., the limits placed on the number of sheets in the tablet case 3 of 4, 4 acquires the stylus contacts the tablet 2, the device 42 of the multi-detector Measured quantities, and take the average to get M 1 .
  • Step S203 0, and detecting the amount of M 1 to determine the order of all sub-ranges based on the detected amount A n M.
  • a 1 represents the detection volume interval M ⁇ M 1 + ⁇ M
  • a 2 represents the detection amount interval M>M 1 + ⁇ M.
  • a 1 is the first order range
  • a 2 is the second order range.
  • a 1 represents the detection volume interval M ⁇ M 1 + ⁇ M
  • a 2 represents the detection volume interval M 1 + ⁇ M ⁇ M ⁇ M 1 +2* ⁇ M
  • a 3 represents the detection volume interval M 1 +2* ⁇ M ⁇ M ⁇ M 1 +3* ⁇ M;
  • a n-1 represents the detection volume interval M 1 +(n-2)* ⁇ M ⁇ M ⁇ M 1 +(n-1)* ⁇ M;
  • a n represents the amount of detected section M> M 1 + (n- 1) * ⁇ M.
  • a n-1 is the (n-1)th order range
  • a n is the nth order range.
  • the second order range can be calculated to the (n-1)th All expressions in the order range.
  • step S201, step S202, and step S203 with respect to step S100 is not limited, and can be performed sequentially or simultaneously.
  • the corresponding order range A n can be determined according to the touch signal, and then the corresponding linear table can be determined according to the corresponding order range A n .
  • Each order range corresponds to a corresponding linear table. After determining the current order range, call the linear table corresponding to the order range.
  • the first step is to determine the maximum detection volume and minimum detection volume of the order range. Add paper 3 on the writing board 4 to make the detection amount of the characteristic position as close as possible to the average value of the maximum detection amount and the minimum detection amount, and collect the detection amount of all nodes on the entire screen at this time.
  • the second step is to select multiple samples, repeat the detection operation of the first step, and finally calculate the average value of the detection amount of each node, and combine the average values to form a linear table corresponding to the order range.
  • the memory 44 also stores a correspondence table between the order range and the linear table. After the current order range is determined, the corresponding linear table is called according to the correspondence table.
  • the calling frequency of the linear meter can be designed in different ways, such as calling each new contact after the active pen is raised, calling when re-contacting after the active pen is raised for T time, calling for the first contact after the APP creates a new editing document, etc.
  • Step S300 Determine the writing trajectory of the handwriting pen 2 when writing according to the corresponding linear table.
  • Step S300 also specifically includes step S301 and step S302, please refer to FIG. 5, and the details are as follows:
  • Step S301 Correct the touch coordinates of the stylus 2 when writing according to the corresponding linear table.
  • the linear table contains correction data to the original touch coordinates.
  • the controller 43 is used to correct the touch coordinates according to the linear table.
  • Step S302 generating a writing trajectory according to the corrected touch coordinates.
  • the handwriting input device 1 provided in this embodiment adopts the above-mentioned writing control method.
  • the controller 43 is used to execute the above writing control method.
  • the controller 43 may select a processor.
  • the writing board 4 further includes a memory 44.
  • the memory 44 stores program instructions corresponding to the above-mentioned writing control method.
  • the controller 43 calls the program instructions in the memory 44 to execute the above-mentioned writing control method.
  • the memory 44 may be a solid-state memory, a memory card, or the like.
  • the controller 43 selects a chip, and the program instructions corresponding to the writing control method are stored in the storage space of the chip.
  • the writing board, writing control method, and handwriting input device provided in this embodiment only need to acquire the touch signals of the writing pad when measuring the handwriting pen writing at different moments, and then the corresponding linear table can be called according to the touch signals to perform adaptive compensation. , Improve the accuracy of calling the linear table on the writing board, make the recognized coordinates more accurate, and the formed writing track accuracy is higher.
  • this method eliminates the influence of all external factors such as the thickness, material and quantity of the paper on the retrieval of the linear meter. Changes in these external factors are transformed into changes in the touch signal, and then the corresponding linearity is retrieved according to the touch signal. Table, the retrieved linear table is more accurate, so that the recognized coordinates are more accurate, and the formed writing track is more accurate.
  • This embodiment also provides a storage medium, the storage medium stores program instructions, and the program instructions are used to execute the above writing control method after being called by a computer.
  • the storage medium can be a magnetic disk, an optical disk, a read-only storage memory or a random storage memory, etc.

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Abstract

本申请提供了一种书写控制方法、书写板4、手写输入装置1和存储介质。该一种书写控制方法包括：通过书写板4测量手写笔2书写时的触控信号；根据所述触控信号确定对应的线性表；根据对应的所述线性表确定所述手写笔2书写时的书写轨迹。该方法通过调用不同触控信号对应的线性表，提升书写板4调用线性表的准确性，使识别到的坐标更精准，形成的书写轨迹精度更高。

Description

一种书写控制方法、书写板、手写输入装置和存储介质 技术领域
本申请涉及书写板技术领域，具体而言，涉及一种书写控制方法、书写板、手写输入装置和存储介质。
背景技术
手写笔与触摸屏搭配的产品，手写笔的触摸位置通过触摸屏上传感器各条通道接收到手写笔的功率计算得到，手写笔笔尖在不同位置书写时传感器上各通道的功率不同，触摸屏中的芯片通过预先建立一个书写坐标与传感器各通道接收功率间的对应关系表来判断位置坐标。但因手写笔的触摸位置通过各通道接收功率的大小或者功率的比例决定，在手写笔与触摸屏之间的距离发生变化时，传感器上通道接收到的功率也会受到影响，导致书写轨迹出现偏差。
发明内容
第一方面，本申请实施例中提供一种书写控制方法，包括：
通过书写板测量手写笔书写时的触控信号；
根据所述触控信号确定对应的线性表；
根据对应的所述线性表确定所述手写笔书写时的书写轨迹。
优选地，所述通过书写板测量手写笔书写时的触控信号，包括：
通过所述书写板测量所述手写笔书写时的触控坐标；
所述根据对应的所述线性表确定所述手写笔书写时的书写轨迹，包括：
根据对应的所述线性表对所述手写笔书写时的所述触控坐标进行修正；
根据修正后的所述触控坐标生成所述书写轨迹。
优选地，所述通过书写板测量手写笔书写时的触控信号，包括：
通过所述书写板测量所述手写笔书写时的功率或电容；
所述根据所述触控信号确定对应的线性表，包括：
根据所述功率或所述电容确定对应的所述线性表。
优选地，所述根据所述触控信号确定对应的线性表，包括：
若所述书写板上设有纸张，所述手写笔在每次接触所述纸张之时，根据所述手写笔的所述触控信号重新确定所述线性表。
优选地，所述触控信号包括触控坐标和功率，或者，所述触控信号包括触控坐标和电容。
优选地，所述根据所述触控信号确定对应的线性表，包括：
根据所述触控信号在对应关系表中调用对应的所述线性表，其中，所述对应关系表包括所述触控信号与所述线性表的对应关系。
第二方面，本实施例提供一种手写输入装置，所述手写输入装置包括手写笔和书写板，所述书写板包括控制器、屏幕以及多个检测器件，多个所述检测器件设置在所述屏幕的下方，每个所述检测器件对应一已知坐标，所述屏幕上方用于放置供所述手写笔进行书写的纸张；
所述控制器用于获取所述手写笔书写时、所述检测器件的触控信号；所述控制器用于根据所述触控信号确定对应的线性表；所述控制器用于根据对应的所述线性表确定所述手写笔书写时的书写轨迹。
优选地，所述控制器用于获取所述书写板测量到的所述手写笔书写时的触控坐标；所述控制器用于根据对应的所述线性表对所述手写笔书写时的所述触控坐标进行修正；所述控制器用于根据修正后的所述触控坐标生成所述书写轨迹。
优选地，所述控制器用于获取所述手写笔书写时所述检测器件的触控信号包括：
所述控制器用于获取所述检测器测量到的所述手写笔书写时的功率或电容；
所述控制器用于根据所述触控信号确定对应的线性表，包括：
所述控制器用于根据所述功率或所述电容确定对应的所述线性表。
优选地，若所述书写板上设有纸张，所述手写笔在每次接触所述纸张之时，所述控制器用于根据所述手写笔的所述触控信号重新确定所述线性表。
优选地，所述检测器件为功率传感器或电容传感器。
优选地，所述书写板还包括存储器，所述存储器中存储有对应关系表，所述对应关系表包括所述触控信号与所述线性表的对应关系，所述控制器用于根据所述触控信号在所述 对应关系表中调用对应的所述线性表。
第三方面，本实施例提供一种书写板，所述书写板包括控制器、屏幕以及多个检测器件，多个所述检测器件设置在所述屏幕的下方，每个所述检测器件对应一已知坐标，所述屏幕上方用于放置供手写笔进行书写的纸张；
所述控制器用于获取所述手写笔书写时、所述检测器件的触控信号；所述控制器用于根据所述触控信号确定对应的线性表；所述控制器用于根据对应的所述线性表确定所述手写笔书写时的书写轨迹。
第四方面，本实施例提供一种存储介质，所述存储介质存储有程序指令，所述程序指令用于被计算机调用后执行如第一方面提供的所述的书写控制方法。
本申请实施例中提供的书写控制方法、书写板、手写输入装置和存储介质，通过调用不同触控信号对应的线性表，提升书写板调用线性表的准确性，使识别到的坐标更精准，形成的书写轨迹精度更高。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为手写输入装置的结构示意图。
图2为书写板的组成框图。
图3为本实施例提供的书写控制方法的流程图。
图4为确定检测量M所对应的阶次范围A n的流程图。
图5为确定书写轨迹的流程图。
附图标记：1-手写输入装置；2-手写笔；3-纸张；4-书写板；41-屏幕；42-检测器件；43-控制器；44-存储器。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本 申请一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本申请实施例的组件可以以各种不同的配置来布置和设计。
因此，以下对在附图中提供的本申请的实施例的详细描述并非旨在限制要求保护的本申请的范围，而是仅仅表示本申请的选定实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书及所述附图中的术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特征可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
请参阅图1和图2，手写输入装置1包括手写笔2和书写板4，书写板4包括控制器43、存储器44、屏幕41以及多个检测器件42，多个检测器件42设置在屏幕41的下方，多个检测器件42呈矩阵分布，每一个检测器件42对应一已知坐标，检测器件42可以是功率传感器或电容传感器。屏幕41上方用于放置供手写笔2进行书写的纸张3。存储器44中存储有线性表、包括触控信号线性表的对应关系的对应关系表以及用于被控制器43调用的程序指令。
基于图1所示的手写输入装置1，本实施例提供一种书写控制方法，请参阅图3，书写控制方法包括步骤S100、步骤S200和步骤S300，详细步骤如下。
步骤S100，通过书写板4测量手写笔2书写时的触控信号。
书写板4在使用过程中，用户会在书写板4上放置纸张3，并采用手写笔2在纸张3上书写，手写笔2书写的内容会通过书写板4显示或存储在其他电子设备上，其他电子设备可以是电脑、手机等具有显示功能的器件。
其中，书写板4测量的触控信号包括检测器件42获得的检测量M和手写笔2书写时的触控坐标。
手写笔2接触书写板4上的纸张3时，书写板4的检测器件42可感应到手写笔2的接 近，则书写板4内的检测器件42获得对应的检测量M。检测量M可以是手写笔2的功率，或者手写笔2的电容，或者其他可以测量到的手写笔2的数据信号。
受到激发的检测器件42对应一已知坐标，因而，可以同时获得手写笔2书写时的触控坐标。
步骤S200，根据触控信号确定对应的线性表。
其中，触控信号可以包括功率或电容，则根据功率或电容确定对应的线性表。
在步骤S200中，需要预先确定所有的阶次范围A，以便根据检测量M选择出对应的阶次范围A。其中，阶次范围A为连续的检测量M组成的一个数集。请参阅图4，确定所有的阶次范围A包括步骤S201、步骤S202和步骤S203，详细步骤如下。
步骤S201，获取手写笔2接触未放置纸张3的书写板4时，检测器件42的检测量M 0。
也就是说，采用手写笔2接触未放置纸张3的书写板4，并利用检测器件42采集此时的检测量M 0。
检测器件42的检测量M 0可以采用取均值的方式得到，也就是说，在书写板4上未放置纸张3的情况下，获取手写笔2接触书写板4时，检测器件42的多个检测量，并取均值得到M 0。
步骤S202，获取手写笔2接触放置极限数量的纸张3的书写板4时，检测器件42的检测量M 1。
也就是说，首先，在书写板4上放置极限数量的纸张3，纸张3的极限数量根据单张纸张3的厚度和书写板4上允许放置的纸张3的极限高度共同确定。然后，采用手写笔2接触最高位置的纸张3表面，并利用检测器件42采集此时的检测量M 1。
检测器件42的检测量M 1可以采用取均值的方式得到，也就是说，在书写板4上放置极限数量的纸张3的情况下，获取手写笔2接触书写板4时，检测器件42的多个检测量，并取均值得到M 1。
因为书写板4上放置纸张3相比于书写板4上未放置纸张3，会增加手写笔2与检测器件42之间的距离，导致检测器件42采集的检测量减小，所以，M 0>M 1。
步骤S203，根据检测量M 0和检测量M 1确定所有的阶次范围A n。
在步骤S203中，首先，确定每个阶次范围的跨度值△M＝(M 0-M 1)/n，其中，n为阶次 范围的数量，n≥2。然后，确定所有的阶次范围A n，根据阶次范围的数量n的取值不同，所有的阶次范围A n的表示形式不同，分为以下两种情况：
(1)当n＝2时，即阶次范围的数量为2的时候，
A 1表示检测量区间M≤M 1+ΔM；
A 2表示检测量区间M＞M 1+ΔM。
其中，A 1即为第一个阶次范围，A 2即为第二个阶次范围。
(2)当n＞2时，即阶次范围的数量大于2的时候，
A 1表示检测量区间M≤M 1+ΔM；
A 2表示检测量区间M 1+ΔM＜M≤M 1+2*ΔM；
A 3表示检测量区间M 1+2*ΔM＜M≤M 1+3*ΔM；
····
A n-1表示检测量区间M 1+(n-2)*ΔM＜M≤M 1+(n-1)*ΔM；
A n表示检测量区间M＞M 1+(n-1)*ΔM。
其中，A n-1即为第(n-1)个阶次范围，A n即为第n个阶次范围。根据A n-1表示检测量区间M 1+(n-2)*ΔM＜M≤M 1+(n-1)*ΔM，可以推算出第二个阶次范围至第(n-1)个阶次范围所有的表达式。
步骤S201、步骤S202、步骤S203相对于步骤S100的顺序不做限定，可以分先后进行，也可以同时进行。
确定所有的阶次范围A n之后，即可根据触控信号确定对应的阶次范围A n，再根据对应的阶次范围A n确定对应的线性表。每个阶次范围对应有一张相应的线性表，当确定当前所处的阶次范围之后，调取与该阶次范围对应的线性表。
其中，建立各个阶次范围对应的线性表的方式，可参照以下步骤：
第一步，确定该阶次范围的最大检测量和最小检测量。在书写板4上添加纸张3，使特征位置的检测量尽量接近最大检测量与最小检测量的均值，并采集此时，整屏上所有节点的检测量。
第二步，选用多个样品，重复第一步的检测操作，最终计算每个节点的检测量的均值， 并将均值组合形成该阶次范围对应的线性表。
存储器44中还存储有阶次范围与线性表的对应关系表，当确定了当前的阶次范围之后，根据对应关系表调用对应的线性表。
线性表的调用频次可以有不同的设计方式，比如主动笔抬起后的每次新接触时调用、主动笔抬起T时间后重新接触时调用、APP新建编辑文档后的首次接触调用等。
步骤S300，根据对应的线性表确定手写笔2书写时的书写轨迹。
在步骤S300中还具体包括步骤S301和步骤S302，请参阅图5，具体如下：
步骤S301，根据对应的线性表对手写笔2书写时的触控坐标进行修正。
其中，线性表包含了对原始触控坐标的修正数据，阶次范围越高，数据修正量也越大。控制器43用于根据线性表对触控坐标进行修正。
步骤S302，根据修正后的触控坐标生成书写轨迹。
请参阅图1，本实施例提供的手写输入装置1，则采用了上述书写控制方法。具体的，控制器43用于执行上述书写控制方法。本实施例中，控制器43可以选用处理器，书写板4还包括存储器44，存储器44中存储上述书写控制方法对应的程序指令，控制器43调用存储器44中的程序指令以执行上述书写控制方法，其中，存储器44可以是固态存储器、存储卡等。在其他实施例中，控制器43选用芯片，书写控制方法对应的程序指令存储在芯片的存储空间内。
本实施例提供的书写板、书写控制方法和手写输入装置只需要获取不同时刻下书写板测量手写笔书写时的触控信号，就可以根据触控信号调取对应的线性表，进行自适应补偿，提升书写板调用线性表的准确性，使识别到的坐标更精准，形成的书写轨迹精度更高。
而且，该方法排除了纸张的厚度、材质、数量等所有外部因素对调取线性表的影响，这些外部因素的变化都转化成了触控信号的变化，再根据触控信号调取对应的线性表，调取的线性表更准确，使识别到的坐标更精准，形成的书写轨迹精度更高。
本实施例还提供一种存储介质，存储介质存储有程序指令，程序指令用于被计算机调用后执行上述书写控制方法。其中，存储介质可为磁盘、光盘、只读存储记忆体或随机存储记忆体等。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、 等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (14)

  1. 一种书写控制方法，其特征在于，包括：
    通过书写板测量手写笔书写时的触控信号；
    根据所述触控信号确定对应的线性表；
    根据对应的所述线性表确定所述手写笔书写时的书写轨迹。
  2. 根据权利要求1所述的书写控制方法，其特征在于，所述通过书写板测量手写笔书写时的触控信号，包括：
    通过所述书写板测量所述手写笔书写时的触控坐标；
    所述根据对应的所述线性表确定所述手写笔书写时的书写轨迹，包括：
    根据对应的所述线性表对所述手写笔书写时的所述触控坐标进行修正；
    根据修正后的所述触控坐标生成所述书写轨迹。
  3. 根据权利要求1所述的书写控制方法，其特征在于，所述通过书写板测量手写笔书写时的触控信号，包括：
    通过所述书写板测量所述手写笔书写时的功率或电容；
    所述根据所述触控信号确定对应的线性表，包括：
    根据所述功率或所述电容确定对应的所述线性表。
  4. 根据权利要求1所述的书写控制方法，其特征在于，所述根据所述触控信号确定对应的线性表，包括：
    若所述书写板上设有纸张，所述手写笔在每次接触所述纸张之时，根据所述手写笔的所述触控信号重新确定所述线性表。
  5. 根据权利要求1所述的书写控制方法，其特征在于，所述触控信号包括触控坐标和功率，或者，所述触控信号包括触控坐标和电容。
  6. 根据权利要求1所述的书写控制方法，其特征在于，所述根据所述触控信号确定对应的线性表，包括：
    根据所述触控信号在对应关系表中调用对应的所述线性表，其中，所述对应关系表包括所述触控信号与所述线性表的对应关系。
  7. 一种手写输入装置，其特征在于，所述手写输入装置包括手写笔和书写板，所述书写板包括控制器、屏幕以及多个检测器件，多个所述检测器件设置在所述屏幕的下方，每个所述检测器件对应一已知坐标，所述屏幕上方用于放置供所述手写笔进行书写的纸张；
    所述控制器用于获取所述手写笔书写时所述检测器件的触控信号；所述控制器用于根据所述触控信号确定对应的线性表；所述控制器用于根据对应的所述线性表确定所述手写笔书写时的书写轨迹。
  8. 根据权利要求7所述的手写输入装置，其特征在于，所述控制器用于获取所述书写板测量到的所述手写笔书写时的触控坐标；所述控制器用于根据对应的所述线性表对所述手写笔书写时的所述触控坐标进行修正；所述控制器用于根据修正后的所述触控坐标生成所述书写轨迹。
  9. 根据权利要求7所述的手写输入装置，其特征在于，所述控制器用于获取所述手写笔书写时所述检测器件的触控信号包括：
    所述控制器用于获取所述检测器测量到的所述手写笔书写时的功率或电容；
    所述控制器用于根据所述触控信号确定对应的线性表，包括：
    所述控制器用于根据所述功率或所述电容确定对应的所述线性表。
  10. 根据权利要求7所述的手写输入装置，其特征在于，若所述书写板上设有纸张，所述手写笔在每次接触所述纸张之时，所述控制器用于根据所述手写笔的所述触控信号重新确定所述线性表。
  11. 根据权利要求7所述的手写输入装置，其特征在于，所述检测器件为功率传感器或电容传感器。
  12. 根据权利要求7所述的手写输入装置，其特征在于，所述书写板还包括存储器，所述存储器中存储有对应关系表，所述对应关系表包括所述触控信号与所述线性表的对应关系，所述控制器用于根据所述触控信号在所述对应关系表中调用对应的所述线性表。
  13. 一种书写板，其特征在于，所述书写板包括控制器、屏幕以及多个检测器件，多个所述检测器件设置在所述屏幕的下方，每个所述检测器件对应一已知坐标，所述屏幕上方用于放置供手写笔进行书写的纸张；
    所述控制器用于获取所述手写笔书写时、所述检测器件的触控信号；所述控制器用于根据所述触控信号确定对应的线性表；所述控制器用于根据对应的所述线性表确定所述手 写笔书写时的书写轨迹。
  14. 一种存储介质，其特征在于，所述存储介质存储有程序指令，所述程序指令用于被计算机调用后执行如权利要求1至6任一项所述的书写控制方法。
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