WO2019105178A1 - 触摸显示系统 - Google Patents

触摸显示系统 Download PDF

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Publication number
WO2019105178A1
WO2019105178A1 PCT/CN2018/113627 CN2018113627W WO2019105178A1 WO 2019105178 A1 WO2019105178 A1 WO 2019105178A1 CN 2018113627 W CN2018113627 W CN 2018113627W WO 2019105178 A1 WO2019105178 A1 WO 2019105178A1
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WIPO (PCT)
Prior art keywords
signal
gain
screen
control module
temperature
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Ceased
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PCT/CN2018/113627
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English (en)
French (fr)
Inventor
母燕雄
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
Guangzhou Shirui Electronics Co Ltd
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
Guangzhou Shirui Electronics Co Ltd
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Publication of WO2019105178A1 publication Critical patent/WO2019105178A1/zh
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means

Definitions

  • the present invention relates to the field of multimedia technologies, and in particular, to a touch display system.
  • a capacitive screen and an electromagnetic screen are simultaneously provided for touch control, wherein the capacitive screen is used for receiving a touch signal without an electromagnetic pen, and the electromagnetic screen is used under the use of an electromagnetic pen. Reception of touch signals.
  • the capacitive screen under the existing nano silver wire process can pass electromagnetic waves through the etched nano silver wire grid under normal conditions, so that the coil of the electromagnetic screen antenna plate can receive the electromagnetic wave signal emitted by the electromagnetic pen. When the electromagnetic screen is not affected by the capacitive screen, it can be written normally.
  • the relevant characteristics of the nano-silver line process capacitive screen are changed.
  • the electromagnetic wave emitted by the electromagnetic pen passes through the capacitive screen, the signal of the electromagnetic wave in some areas is weakened by the capacitive screen attenuation.
  • the signal received by the antenna board of the electromagnetic screen is weakened, and the electromagnetic screen is written as a broken line in a part of the whole machine.
  • a touch display system can avoid the occurrence of writing disconnection at a low temperature and improve writing sensitivity.
  • Embodiments of the present invention provide a touch display system, including: an electromagnetic screen, a capacitive screen, a display screen, a host control module, a temperature detecting module, and an electromagnetic screen control module;
  • the temperature detecting module is configured to detect a temperature at which the touch display system operates in a current working environment, and output the temperature corresponding temperature data to the electromagnetic screen control module;
  • the electromagnetic screen control module is configured to adjust a gain multiple of the written signal received from the electromagnetic screen according to the received temperature data, to gain a signal amplitude of the received writing signal to the signal amplitude corresponding to the gain multiple, And outputting the written signal after the gain to the host control module;
  • the host control module is configured to receive the written signal after the gain, and transmit the received writing signal to a display to display a written handwriting.
  • the temperature detecting module is a temperature sensor.
  • the electromagnetic screen control module includes a signal conversion unit and a micro control unit
  • the micro control unit is configured to receive temperature data output by the temperature detecting module, determine a gain multiple to be set by the signal converting unit according to the received temperature data, and output the gain multiple to the signal converting unit;
  • the signal conversion unit is configured to receive a gain multiple of the output of the micro control unit, adjust a currently set gain multiple to a received gain multiple, and receive a writing signal from the electromagnetic screen according to a currently set gain The signal amplitude of the writing signal is multiplied to a signal amplitude corresponding to the currently set gain multiple, and the output signal after the gain is output to the micro control unit;
  • the micro control unit is configured to output the received gain signal to the host control unit.
  • the determining, according to the received temperature data, determining a gain multiple set by the signal conversion unit specifically:
  • determining that the signal multiplier to be set by the signal conversion unit is a second gain multiple; wherein the second gain multiple is greater than the first gain multiple.
  • the touch display system further includes a capacitive screen control module
  • the capacitive screen control module is configured to receive a writing signal from the capacitive screen, and transmit the writing signal to the host control unit, so that the host control unit transmits the writing signal to a display for display Write handwriting.
  • the communication connection between the micro control unit and the host control unit is a USB connection
  • the micro control unit outputs the received gain written signal to the host control through the USB connection. unit.
  • the writing signal includes an electromagnetic pen touching coordinate data of the electromagnetic screen.
  • the touch display system adds a temperature detecting module to the electromagnetic screen control module of the original touch display system, and adjusts the writing of the electromagnetic screen control module to the electromagnetic screen through the detected temperature.
  • the gain multiplier of the signal gain amplification and further, even if the capacitive screen made by the nano silver wire process changes characteristics due to the temperature change, the capacitive screen weakens the electromagnetic wave signal passing through the capacitive screen and reaches the electromagnetic screen, but due to the electromagnetic screen
  • the electromagnetic screen control module can increase the amplification factor of the received electromagnetic wave signal weakened by the capacitive screen, and can avoid the occurrence of the disconnection of the electromagnetic screen due to the temperature change.
  • FIG. 1 is a schematic structural view of an embodiment of a touch display system provided by the present invention.
  • FIG. 2 is a schematic structural diagram of an embodiment of a electromagnetic screen control module of a touch display system provided by the present invention
  • FIG. 3 is a schematic structural view of another embodiment of a touch display system provided by the present invention.
  • FIG. 1 is a schematic structural diagram of an embodiment of a touch display system provided by the present invention.
  • the embodiment of the present invention provides a touch display system, including: an electromagnetic screen 101, a capacitive screen 102, a display screen 103, a host control module 104, a temperature detecting module 105, and a electromagnetic screen control module 106; the electromagnetic screen 101 is disposed in the Below the capacitive screen 102, the display screen 103 is disposed under the electromagnetic screen 101;
  • the temperature detecting module 105 is configured to detect a temperature at which the touch display system operates in a current working environment, and output the temperature corresponding temperature data to the electromagnetic screen control module 106.
  • the temperature detecting module 105 For the temperature sensor.
  • the electromagnetic screen control module 106 is configured to adjust a gain multiple of the writing signal received from the electromagnetic screen 101 according to the received temperature data, to gain a signal amplitude of the received writing signal to the gain multiple corresponding signal. Amplitude, and output the written signal after the gain to the host control module 104;
  • the host control module 104 is configured to receive the written signal after the gain, and transmit the received writing signal to a display to display a written handwriting.
  • a temperature detecting module 105 is added to the electromagnetic screen control module 106.
  • the temperature detecting module 105 is a temperature sensor, detects the temperature of the whole working in the current working environment, and provides the detected temperature data to the temperature data.
  • the electromagnetic screen control module 106 adjusts the gain multiple of the received writing signal according to the detected current operating temperature, so that different gain multiples are executed under different temperature conditions to amplify the writing signal, thereby even
  • the temperature change causes the capacitive screen 102 made by the nano-silver wire process to change characteristics such that the capacitive screen 102 weakens the electromagnetic wave signal that passes through the capacitive screen 102 to the electromagnetic screen 101, but because the electromagnetic screen control module 106 of the electromagnetic screen 101 can
  • the received electromagnetic wave signal weakened by the capacitive screen 102 is increased in magnification, and it is also possible to prevent the electromagnetic screen 101 from being broken due to temperature changes.
  • the electromagnetic screen control module 106 includes a signal conversion unit and a micro control unit; the signal conversion unit includes a function of amplifying the signal, and is provided with a fixed operational amplifier and an adjustable operational amplifier or only an adjustable operation. put. among them,
  • the micro control unit 11 is configured to receive temperature data output by the temperature detecting module 105, determine a gain multiple to be set by the signal converting unit according to the received temperature data, and output the gain multiple to the signal conversion. unit;
  • the signal conversion unit 12 is configured to receive a gain multiple output by the micro control unit 11, adjust a currently set gain multiple to a received gain multiple, and receive a writing signal from the electromagnetic screen 101, according to the current setting. a predetermined gain multiplier to the signal amplitude of the written signal to the signal amplitude corresponding to the currently set gain multiple, and output the gained write signal to the micro control unit 11;
  • the micro control unit 11 is configured to output the received gain signal to the host control unit.
  • micro control unit 11 determines the gain multiple set by the signal conversion unit 12 according to the received temperature data, specifically:
  • the gain multiplier to be set by the signal conversion unit 12 is a second gain multiple; wherein the second gain multiple is greater than the first gain multiple.
  • the micro control unit 11 determines that the signal conversion unit 12 increases the gain multiple to be high according to the temperature provided by the temperature sensor, so that the signal conversion unit 12 converts the writing.
  • the output amplitude of the signal is increased, so that the attenuation of the electromagnetic wave signal emitted by the electromagnetic pen to the electromagnetic pen 102 can be offset, and the normal electromagnetic screen 101 writing at a low temperature can be prevented from being broken.
  • the touch display system further includes a capacitive screen 102 control module
  • the capacitive screen 102 controls a module for receiving a writing signal from the capacitive screen 102 and transmitting the writing signal to the host control unit to cause the host control unit to transmit the writing signal to the display Perform a written handwriting.
  • the whole device of the touch display system includes the electromagnetic screen 101, the capacitive screen 102, the display screen 103, the host control module 104 and the electromagnetic screen control module 106, and the capacitive screen 102 control module, and the host control module 104 respectively controls the electromagnetic screen.
  • the control module 106 and the capacitive screen 102 control the module to operate, and the electromagnetic screen control module 106 controls the electromagnetic screen 101 to operate, and the capacitive screen 102 control module controls the capacitive screen 102 to operate.
  • the electromagnetic wave signal sent by the electromagnetic pen is sent to the electromagnetic screen 101 through the capacitive screen 102, and the electromagnetic wave signal received by the electromagnetic screen 101 from the electromagnetic screen 101 is received by the electromagnetic control module.
  • the electromagnetic wave signal is converted into a written signal and transmitted to the host control module 104.
  • the capacitive screen 102 When the writer does not use the electromagnetic pen to write on the screen, the capacitive screen 102 generates a capacitive signal, and the capacitive screen 102 control module converts the capacitive signal into a written signal for transmission to the host control module 104. Further, the host control module 104 transmits a writing signal to the display to display a written handwriting. That is, the touch display system provided by the present invention realizes writing in the case of the presence or absence of an electromagnetic pen.
  • the communication connection between the micro control unit 11 and the host control unit is a USB connection, and the micro control unit 11 outputs the received gain written signal to the Host control unit.
  • the writing signal includes coordinate data of the electromagnetic screen 101 touched by the electromagnetic pen.
  • the display is displayed based on the coordinate data touched by the writer on the screen.
  • the electromagnetic screen control module of the touch display system provided by the embodiment of the invention comprises a signal conversion unit 12, a micro control unit 11, an operational amplifier unit 13, and a temperature detection module as a temperature sensor.
  • Step 1 When the writer powers on the whole machine, the electromagnetic screen control module 106 receives power supply and starts working.
  • Step 2 The micro control unit 11 of the electromagnetic screen control module 106 is initialized, and the temperature sensor works;
  • Step 3 The micro control unit 11 of the electromagnetic screen control module 106 receives the operating temperature of the real-time sensing environment of the temperature sensor. When the received operating temperature value is greater than zero, the micro control unit 11 controls the gain of the signal conversion unit 12. The multiple is set to A. When the received operating temperature value is less than zero, the micro control unit 11 controls the signal conversion unit 12 to set the gain multiple to B, and the gain value of B is greater than A.
  • Step 4 The signal conversion unit 12 amplifies the amplitude value of the writing signal received from the electromagnetic screen 101 to the amplitude value corresponding to the gain multiple A or B according to the currently set gain multiplier A or B, and enlarges the conversion.
  • the writing signal is transmitted to the fixed operating unit for the operational amplifier.
  • the fixed operational amplifier unit 13 is provided such that the amplification adjustable gain of the signal conversion unit 12 is more reliable.
  • Step 5 The written signal after the operation of the operational amplifier unit 13 is transmitted to the micro control unit 11, and the micro control unit 11 packs and converts the received writing signal into a USB signal, and transmits the USB signal to the host through a USB communication connection. unit;
  • Step 6 The host control unit demodulates the received USB signal into a writing signal, wherein the book signal includes coordinate data that the writer touches on the electromagnetic screen 101 by using an electromagnetic pen; the host control unit transmits the writing signal to the display.
  • the display displays a writing trace at coordinates corresponding to the coordinate data, thereby completing the writing process.
  • the touch display system adds a temperature detecting module to the electromagnetic screen control module of the original touch display system, and adjusts the writing of the electromagnetic screen control module to the electromagnetic screen through the detected temperature.
  • the gain multiplier of the signal gain amplification and further, even if the capacitive screen made by the nano silver wire process changes characteristics due to the temperature change, the capacitive screen weakens the electromagnetic wave signal passing through the capacitive screen and reaches the electromagnetic screen, but due to the electromagnetic screen
  • the electromagnetic screen control module can increase the amplification factor of the received electromagnetic wave signal weakened by the capacitive screen, and can avoid the occurrence of the disconnection of the electromagnetic screen due to the temperature change.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Position Input By Displaying (AREA)

Abstract

一种触摸显示系统，包括：电磁屏（101）、电容屏（102）、显示屏（103）、主机控制模块（104）、温度检测模块（105）和电磁屏控制模块（106）；电磁屏（101）设置在电容屏（102）之下，显示屏（103）设置在电磁屏（101）之下；温度检测模块（105），用于检测触摸显示系统在当前工作环境下工作的温度，并输出所述温度对应温度数据给电磁屏控制模块（106）；电磁屏控制模块（106），用于根据接收到的温度数据，调整从电磁屏（101）中接收到的书写信号的增益倍数，以将接收到的书写信号的信号幅度增益到增益倍数对应信号幅度，并输出增益后的书写信号给主机控制模块（104）；主机控制模块（104），用于接收所述增益后的书写信号，并将接收到的书写信号传送给显示器进行显示书写笔迹。采用本实施例，能够避免低温下书写断线的情况出现，提高书写灵敏度。

Description

触摸显示系统 技术领域
本发明涉及多媒体技术领域，尤其涉及一种触摸显示系统。
背景技术
在电容+电磁式交互智能平板、会议平板领域，会同时设置有电容屏和电磁屏用于触摸控制，其中电容屏用于在无电磁笔下的触摸信号接收，电磁屏用于在使用电磁笔下的触摸信号的接收。在现有的纳米银线工艺之下的电容屏能够在正常状态下使电磁波穿过蚀刻后的纳米银线网格，使电磁屏的天线板的线圈能够接受到电磁笔发出的电磁波信号，此时电磁屏不受电容屏的影响可以正常地书写。
但是，当智能平板工作在零度以下的工作环境时，纳米银线工艺电容屏的相关特性发生了改变，当电磁笔发出的电磁波穿过电容屏时，部分区域电磁波的信号会被电容屏衰减削弱，导致电磁屏的天线板接受到的信号变弱，此时表现为电磁屏在整机的部分区域书写断线。
发明内容
本发明实施例提出的一种触摸显示系统，能够避免低温下书写断线的情况出现，提高书写灵敏度。
本发明实施例提供一种触摸显示系统，包括：电磁屏、电容屏、显示屏、主机控制模块、温度检测模块和电磁屏控制模块；
所述温度检测模块，用于检测所述触摸显示系统在当前工作环境下工作的温度，并输出所述温度对应温度数据给所述电磁屏控制模块；
所述电磁屏控制模块，用于根据接收到的温度数据，调整从电磁屏中接收到的书写信号的增益倍数，以将接收到的书写信号的信号幅度增益到所述增益 倍数对应信号幅度，并输出增益后的书写信号给所述主机控制模块；
所述主机控制模块，用于接收所述增益后的书写信号，并将接收到的书写信号传送给显示器进行显示书写笔迹。
优选地，所述温度检测模块为温度传感器。
进一步地，所述电磁屏控制模块包括信号转换单元和微控制单元；
所述微控制单元，用于接收所述温度检测模块输出的温度数据，根据接收到的温度数据，确定所述信号转换单元将要设置的增益倍数，输出所述增益倍数给所述信号转换单元；
所述信号转换单元，用于接收所述微控制单元输出的增益倍数，将当前设定的增益倍数调整为接收到的增益倍数，并从所述电磁屏接收书写信号，根据当前设定的增益倍数对所述书写信号的信号幅度增益到所述当前设定的增益倍数对应的信号幅度，并输出增益后的书写信号给所述微控制单元；
所述微控制单元，用于将接收到的增益后的书写信号输出给所述主机控制单元。
进一步地，所述根据接收到的温度数据，确定所述信号转换单元设置的增益倍数，具体为：
根据接收到的温度数据，判断当前时刻对应的温度数值是否大于预设温度阈值；优选地，所述预设温度阈值为零摄氏度。
若是，则确定所述信号转换单元将要设置的增益倍数为第一增益倍数；
若否，则确定所述信号转换单元将要设置的增益倍数为第二增益倍数；其中，所述第二增益倍数大于所述第一增益倍数。
进一步地，所述触摸显示系统还包括电容屏控制模块；
所述电容屏控制模块，用于从所述电容屏中接收书写信号，并将所述书写信号传送给所述主机控制单元，以使所述主机控制单元将所述书写信号传送给显示器进行显示书写笔迹。
进一步地，所述微控制单元与所述主机控制单元之间的通信连接为USB连接，则所述微控制单元通过所述USB连接，将接收到的增益后的书写信号输出 给所述主机控制单元。
更进一步地，所述书写信号包括电磁笔触控所述电磁屏的坐标数据。
实施本发明实施例，具有如下有益效果：
本发明实施例提供的一种触摸显示系统，在原有的触摸显示系统的电磁屏控制模块中增加一个温度检测模块，通过检测到的温度来调整电磁屏控制模块对从电磁屏中接收到的书写信号增益放大的增益倍数，进而，即使因温度变化导致由纳米银线工艺制成的电容屏改变了特性，使得电容屏削弱了穿过电容屏而到达电磁屏的电磁波信号，但因电磁屏的电磁屏控制模块能够对接收到的被电容屏削弱的电磁波信号加大了放大倍数，能够避免电磁屏因温度变化而出现部分区域书写断线的情况出现。
附图说明
图1是本发明提供的触摸显示系统的一个实施例的结构示意图；
图2是本发明提供的触摸显示系统的电磁屏控制模块的一个实施例的结构示意图；
图3是本发明提供的触摸显示系统的另一个实施例的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
参见图1，是本发明提供的触摸显示系统的一个实施例的结构示意图；
本发明实施例提供一种触摸显示系统，包括：电磁屏101、电容屏102、显示屏103、主机控制模块104、温度检测模块105和电磁屏控制模块106；所述电磁屏101设置在所述电容屏102之下，所述显示屏103设置在所述电磁屏101之下；
所述温度检测模块105，用于检测所述触摸显示系统在当前工作环境下工作的温度，并输出所述温度对应温度数据给所述电磁屏控制模块106；优选地，所述温度检测模块105为温度传感器。
所述电磁屏控制模块106，用于根据接收到的温度数据，调整从电磁屏101中接收到的书写信号的增益倍数，以将接收到的书写信号的信号幅度增益到所述增益倍数对应信号幅度，并输出增益后的书写信号给所述主机控制模块104；
所述主机控制模块104，用于接收所述增益后的书写信号，并将接收到的书写信号传送给显示器进行显示书写笔迹。
本发明实施例在电磁屏控制模块106中增加一个温度检测模块105，优选所述温度检测模块105为温度传感器，检测整机在当前工作环境下工作的温度，并将检测到的温度数据提供给电磁屏控制模块106，电磁屏控制模块106根据检测到的当前工作温度调整对接收到的书写信号的增益倍数，使得在不同的温度条件下执行不同的增益倍数来放大书写信号，从而，即使因温度变化导致由纳米银线工艺制成的电容屏102改变了特性，使得电容屏102削弱了穿过电容屏102而到达电磁屏101的电磁波信号，但因电磁屏101的电磁屏控制模块106能够对接收到的被电容屏102削弱的电磁波信号加大了放大倍数，也是能够避免电磁屏101因温度变化而出现部分区域书写断线的情况出现。
具体地，如图2所示，所述电磁屏控制模块106包括信号转换单元和微控制单元；信号转换单元包含有对信号放大的功能，设置有固定运放和可调运放或者仅设置可调运放。其中，
所述微控制单元11，用于接收所述温度检测模块105输出的温度数据，根据接收到的温度数据，确定所述信号转换单元将要设置的增益倍数，输出所述增益倍数给所述信号转换单元；
所述信号转换单元12，用于接收所述微控制单元11输出的增益倍数，将当前设定的增益倍数调整为接收到的增益倍数，并从所述电磁屏101接收书写信号，根据当前设定的增益倍数对所述书写信号的信号幅度增益到所述当前设定的增益倍数对应的信号幅度，并输出增益后的书写信号给所述微控制单元11；
所述微控制单元11，用于将接收到的增益后的书写信号输出给所述主机控制单元。
进一步地，所述微控制单元11根据接收到的温度数据，确定所述信号转换单元12设置的增益倍数，具体为：
根据接收到的温度数据，判断当前时刻对应的温度数值是否大于预设温度阈值；优选地，所述预设温度阈值为零摄氏度。
若是，则确定所述信号转换单元12将要设置的增益倍数为第一增益倍数；
若否，则确定所述信号转换单元12将要设置的增益倍数为第二增益倍数；其中，所述第二增益倍数大于所述第一增益倍数。
例如，当温度传感器检测到温度小于零度时，所述微控制单元11根据温度传感器提供的温度，确定所述信号转换单元12将要高置的增益倍数调高，以使信号转换单元12在转换书写信号时增大信号的输出幅度，从而可以抵销电容屏102对电磁笔发出的电磁波信号的衰减，实现低温下正常的电磁屏101书写不会出现断线的情况。
进一步地，所述触摸显示系统还包括电容屏102控制模块；
所述电容屏102控制模块，用于从所述电容屏102中接收书写信号，并将所述书写信号传送给所述主机控制单元，以使所述主机控制单元将所述书写信号传送给显示器进行显示书写笔迹。
需要说明的是，触摸显示系统的整机包括电磁屏101、电容屏102、显示屏103、主机控制模块104和电磁屏控制模块106，以及电容屏102控制模块，主机控制模块104分别控制电磁屏控制模块106和电容屏102控制模块工作，而电磁屏控制模块106控制电磁屏101工作，电容屏102控制模块控制电容屏102工作。当书写者利用电磁笔在屏幕上书写时，电磁笔发送的电磁波信号穿过电容屏102发送给电磁屏101，电磁屏101将接收的电磁波信号，电磁控制模块将从电磁屏101中接收到的电磁波信号转化成书写信号传送给主机控制模块104。当书写者没用利用电磁笔而在屏幕上书写时，电容屏102生成电容信号，电容屏102控制模块将该电容信号转换成书写信号传送给主机控制模块104。进而， 主机控制模块104，将书写信号传送给显示器进行显示书写笔迹。也就是本发明提供的触摸显示系统实现不管有无电磁笔的情况下均可书写的情况。
优选地，所述微控制单元11与所述主机控制单元之间的通信连接为USB连接，则所述微控制单元11通过所述USB连接，将接收到的增益后的书写信号输出给所述主机控制单元。
更进一步地，所述书写信号包括电磁笔触控所述电磁屏101的坐标数据。显示器是根据书写者在屏幕上触控的坐标数据进行显示的。
参见图3，是本发明提供的触摸显示系统的另一个实施例的结构示意图。本发明实施例提供的触摸显示系统的电磁屏控制模块包括信号转换单元12、微控制单元11、运放单元13，以及温度检测模块为温度传感器。
以下将结合图3描述书写利用本发明提供的触摸显示系统的进行书写的工作流程：
步骤一：书写者给整机上电，则电磁屏控制模块106接受供电，开始工作。
步骤二：电磁屏控制模块106的微控制单元11初始化，温度传感器工作；
步骤三：电磁屏控制模块106的微控制单元11接收温度传感器的实时感应的整机工作环境的工作温度，当接收到的工作温度数值大于零度时，微控制单元11控制信号转换单元12的增益倍数设置为A，当接收到的工作温度数值小于零度时，微控制单元11控制信号转换单元12的增益倍数设置为B，B的增益数值大于A。
步骤四：信号转换单元12根据当前已设置好的增益倍数A或B，将从电磁屏101中接收到的书写信号的幅度值放大到增益倍数A或B对应的幅度值，并将转换放大后的书写信号传送给固定运行单元进行运放。提供固定运放单元13，使得信号转换单元12的放大可调增益更可靠。
步骤五，经运放单元13运放后的书写信号传给微控制单元11，微控制单元11将接收到的书写信号打包转换成USB信号，通过USB通信连接，将该USB信号传送给主机控制单元；
步骤六：主机控制单元将接收的USB信号解调成书写信号，其中所述书信 号包括有书写者采用电磁笔在电磁屏101上触控的坐标数据；主机控制单元将该书写信号传送给显示器，显示器在该坐标数据对应的坐标显示书写痕迹，从而完成书写过程。
本发明实施例提供的一种触摸显示系统，在原有的触摸显示系统的电磁屏控制模块中增加一个温度检测模块，通过检测到的温度来调整电磁屏控制模块对从电磁屏中接收到的书写信号增益放大的增益倍数，进而，即使因温度变化导致由纳米银线工艺制成的电容屏改变了特性，使得电容屏削弱了穿过电容屏而到达电磁屏的电磁波信号，但因电磁屏的电磁屏控制模块能够对接收到的被电容屏削弱的电磁波信号加大了放大倍数，能够避免电磁屏因温度变化而出现部分区域书写断线的情况出现。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (8)

  1. 一种触摸显示系统，其特征在于，包括：电磁屏、电容屏、显示屏、主机控制模块、温度检测模块和电磁屏控制模块；
    所述温度检测模块，用于检测所述触摸显示系统在当前工作环境下工作的温度，并输出所述温度对应温度数据给所述电磁屏控制模块；
    所述电磁屏控制模块，用于根据接收到的温度数据，调整从电磁屏中接收到的书写信号的增益倍数，以将接收到的书写信号的信号幅度增益到所述增益倍数对应信号幅度，并输出增益后的书写信号给所述主机控制模块；
    所述主机控制模块，用于接收所述增益后的书写信号，并将接收到的书写信号传送给显示器进行显示书写笔迹。
  2. 如权利要求1所述的触摸显示系统，其特征在于，所述电磁屏控制模块包括信号转换单元和微控制单元；
    所述微控制单元，用于接收所述温度检测模块输出的温度数据，根据接收到的温度数据，确定所述信号转换单元将要设置的增益倍数，输出所述增益倍数给所述信号转换单元；
    所述信号转换单元，用于接收所述微控制单元输出的增益倍数，将当前设定的增益倍数调整为接收到的增益倍数，并从所述电磁屏接收书写信号，根据当前设定的增益倍数对所述书写信号的信号幅度增益到所述当前设定的增益倍数对应的信号幅度，并输出增益后的书写信号给所述微控制单元；
    所述微控制单元，用于将接收到的增益后的书写信号输出给所述主机控制单元。
  3. 如权利要求2所述的触摸显示系统，其特征在于，所述根据接收到的温度数据，确定所述信号转换单元设置的增益倍数，具体为：
    根据接收到的温度数据，判断当前时刻对应的温度数值是否大于预设温度阈值；
    若是，则确定所述信号转换单元将要设置的增益倍数为第一增益倍数；
    若否，则确定所述信号转换单元将要设置的增益倍数为第二增益倍数；其中，所述第二增益倍数大于所述第一增益倍数。
  4. 如权利要求1所述的触摸显示系统，其特征在于，所述触摸显示系统还包括电容屏控制模块；
    所述电容屏控制模块，用于从所述电容屏中接收书写信号，并将所述书写信号传送给所述主机控制单元，以使所述主机控制单元将所述书写信号传送给显示器进行显示书写笔迹。
  5. 如权利要求2所述的触摸显示系统，其特征在于，所述微控制单元与所述主机控制单元之间的通信连接为USB连接，则所述微控制单元通过所述USB连接，将接收到的增益后的书写信号输出给所述主机控制单元。
  6. 如权利要求1所述的触摸显示系统，其特征在于，所述书写信号包括电磁笔触控所述电磁屏的坐标数据。
  7. 如权利要求1所述的触摸显示系统，其特征在于，所述温度检测模块为温度传感器。
  8. 如权利要求3所述的触摸显示系统，其特征在于，所述预设温度阈值为零摄氏度。
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