CN102479020B - Anti-interference electromagnetic handwriting device and electromagnetic pen position identification method - Google Patents

Anti-interference electromagnetic handwriting device and electromagnetic pen position identification method Download PDF

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CN102479020B
CN102479020B CN 201010558614 CN201010558614A CN102479020B CN 102479020 B CN102479020 B CN 102479020B CN 201010558614 CN201010558614 CN 201010558614 CN 201010558614 A CN201010558614 A CN 201010558614A CN 102479020 B CN102479020 B CN 102479020B
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electromagnetic
signal
display panel
panel
pen
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CN 201010558614
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CN102479020A (en
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赵磊
尹航
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汉王科技股份有限公司
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Abstract

本发明公开了一种抗干扰的电磁手写装置及电磁笔位置识别方法,通过天线板接收来自电磁笔的电磁信号,并将所述电磁信号发送给控制板;控制板根据所接收的电磁信号控制显示面板的工作状态,并根据所述显示面板的工作状态信息判断是否对电磁笔位置进行识别。 The present invention discloses an electromagnetic device and a handwriting recognition method pen position electromagnetic interference, the receiving electromagnetic signals from an electromagnetic pen by an antenna plate, and said electromagnetic signal is transmitted to the control panel; board according to the received electromagnetic signal control the operating state of the display panel, the panel and the operating state information determines whether electromagnetic pen position identified according to the display. 采用本发明所述的方案,能够有效避免显示面板刷新时的噪声干扰信号对电磁笔的影响,防止电磁笔的误动作。 Using the embodiment of the present invention can effectively avoid the effects of noise signals panel display refresh electromagnetic pen, to prevent malfunction of the electromagnetic pen.

Description

一种抗干扰的电磁手写装置及电磁笔位置识别方法 Handwriting electromagnetic interference and electromagnetic apparatus pen position recognition method

技术领域 FIELD

[0001] 本发明涉及电数字处理领域,特别是在具有显示面板的电磁手写设备中,防止因显示面板刷新导致误动作的一种抗干扰的电磁手写装置及电磁笔位置识别方法。 [0001] The present invention relates to electrical digital processing, and particularly in a display having an electromagnetic device handwritten panel, the display panel refresh lead to prevent electromagnetic interference of the handwriting device malfunction position recognition method and the electromagnetic pen.

背景技术 Background technique

[0002] 在现有的电磁手写装置中,利用具有谐振电路的电磁笔在天线板上移动时,从天线板的发送线圈发送的电磁波激励电磁笔的谐振电路,从而由电磁笔感应出强的谐振信号。 [0002] In the conventional handwritten electromagnetic device, the electromagnetic pen having a resonance circuit board when the mobile antenna, an electromagnetic wave transmitted from transmitting antenna boards coil excitation electromagnetic pen resonance circuit, thereby inducing a strong electromagnetic pen resonance signal. 当接收线圈感应到电磁笔信号时,对其进行处理及采样而能够确定电磁笔的位置。 When receiving the electromagnetic induction coil pen signal, process it is possible to determine the position and sampling the electromagnetic pen. 但是,在将显示面板安装在天线板上方而构成手写显示等设备时,显示面板工作状态分为两种:正常显示页面内容的状态、以及翻页或刷新时的刷新状态。 However, when the panel is mounted on the antenna side plate displays a handwriting display apparatus is configured, the display panel is divided into two operating state: the state of normal display page content, and a refresh state or refresh the page. 当显示面板处于刷新状态时,接收线圈接收电磁笔输入信号的同时还会接收到显示面板刷新时的屏干扰噪声,以上噪声信号被接收线圈接收后,可能被认为是电磁笔的输入信号从而产生误触发动作。 When the display panel is in a refresh state, the receiving coil receives electromagnetic pen input signal while also receiving the interference noise screen refresh when the display panel, the above noise signal received by the receiver coil, an electromagnetic pen may be considered an input signal to produce false triggering action.

发明内容 SUMMARY

[0003] 有鉴于此,本发明的主要目的在于提供一种抗干扰的电磁手写装置及电磁笔位置识别方法,以防止电磁笔因噪声信号产生误动作。 [0003] In view of this, the main object of the present invention is to provide an electromagnetic device and a handwriting recognition method electromagnetic interference pen position to prevent malfunction due to electromagnetic pen noise signal.

[0004] 为达到上述目的,本发明的技术方案是这样实现的: [0004] To achieve the above object, the technical solution of the present invention is implemented as follows:

[0005] 本发明提供的抗干扰的电磁手写装置包括:显示面板、设置在所述显示面板下方的天线板、设置在所述天线板的下方的控制板、及内部具有电磁谐振电路的电磁笔,所述控制板,用于根据天线板发送的电磁信号控制显示面板的工作状态,以及根据所述显示面板的工作状态信息,判断是否对电磁笔位置进行识别。 [0005] electromagnetic interference handwritten present invention provides apparatus comprising: a display panel disposed under the display panel antenna board, the control board is disposed below the antenna boards, and the internal electromagnetic pen has an electromagnetic resonant circuit the control panel for the operating state of the panel, and determines whether the electromagnetic pen position identification information according to the display panel according to the operating state of the electromagnetic signal transmitted from the control display panel antenna.

[0006] 上述方案中,所述控制板根据显示面板的工作状态信息判断是否对电磁笔位置进行识别为:在所述显示面板处于刷新状态时,控制板停止对接收的电磁信号进行处理,从而停止对电磁笔位置进行识别;在所述显示面板结束刷新状态后,控制板对接收的电磁信号进行处理,从而识别电磁笔的位置。 [0006] In the above embodiment, the operating state information based on the control board determines whether the display panel electromagnetic pen position identified as: when the display panel is in a refresh state, the control panel stops processing the received electromagnetic signal, whereby stop electromagnetic pen position identified; after the end of the refresh state display panel, the control panel of the received electromagnetic signal is processed to identify the position of the electromagnetic pen.

[0007] 上述方案中,所述控制板包括:发送部、接受部、处理部、及控制部;其中, [0007] In the above embodiment, the control panel comprising: a transmitting unit, receiving unit, processing unit, and a control unit; wherein,

[0008] 发送部,用于向所述天线板发送电磁信号; [0008] The transmitting unit for transmitting electromagnetic signals to the antenna plate;

[0009] 接收部,用于将天线板接收的电磁信号生成输入信号,发送给处理部; [0009] receiving unit, for receiving the electromagnetic signals from the antenna board generates an input signal, transmitted to the processing unit;

[0010] 处理部,用于对所述输入信号进行处理,生成识别信息并发送给控制部; [0010] The processing unit, for processing the input signal, to generate identification information and sends a control unit;

[0011] 控制部,用于根据所述识别信息识别电磁笔的位置,并且在所述显示面板处于刷新状态时,使处理部停止对输入信号的处理;在所述显示面板结束刷新状态后,使处理部继续对输入信号进行处理。 [0011] a control unit, based on said identification information identifies the location of the electromagnetic pen, and when the display panel is in a refresh state, the processing unit to stop processing the input signal; refresh state after the end of the panel display, the processing unit continues processing the input signal.

[0012] 上述方案中,所述发送部包括:信号发生器和第一多路选择开关;其中, [0012] In the above embodiment, the transmission unit comprises: a signal generator and a first multiplexer switch; wherein,

[0013] 信号发生器,用于产生规定波形的电磁信号; [0013] Signal generator for generating an electromagnetic signal of a predetermined waveform;

[0014] 第一多路选择开关,用于选择接通所述天线板中的发送线圈,并通过所述发送线圈发送所产生的电磁信号。 [0014] The first multiplexer switch for selectively turning on said transmitting antenna coil plate, and transmission coil transmitting an electromagnetic signal produced by said. [0015] 上述方案中,所述接收部包括:第二多路选择开关和放大部;其中, [0015] In the above embodiment, the receiving portion comprises: a second multiplexer switching and amplifying portion; wherein,

[0016] 第二多路选择开关,用于选择接通所述天线板中的接收线圈,并通过所述接收线圈将接收到的电磁信号输出给放大部; [0016] The second multiplexer switch for selectively turning on the antenna coil receiving plate and the receiving electromagnetic signals outputted by the amplifying unit to the receiving coil;

[0017] 放大部,用于对所接收到的电磁信号进行放大,生成所述输入信号并发送给处理部。 [0017] The amplifying unit, for receiving the electromagnetic signal is amplified to generate the input signal and sends the processing unit.

[0018] 上述方案中,所述处理部包括:整形电路、积分电路、A/D采样电路;其中, [0018] In the above embodiment, the processing unit comprising: a shaping circuit, the integrating circuit, A / D sampling circuit; wherein,

[0019] 整形电路,用于对来自所述接收部的输入信号进行滤波整形处理; [0019] The shaping circuit for receiving an input signal from the shaping filter unit;

[0020] 积分电路,用于对经滤波整形处理后的输入信号进行积分,生成积分波形; [0020] The integrating circuit, an input signal is filtered after the shaping process is integrated to generate an integrated waveform;

[0021] A/D采样电路,用于对所述积分波形进行采样,将采样所得的峰值处对应的坐标转化为识别信息发送给控制部。 [0021] A / D sampling circuit for sampling the integral waveform, the corresponding samples obtained at the peak of the coordinate conversion to send the identification information to the control unit.

[0022] 本发明还提供了一种抗干扰的电磁笔位置识别方法,该方法包括: [0022] The present invention further provides an electromagnetic interference pen position recognition method, the method comprising:

[0023] 天线板接收来自电磁笔的电磁信号,并将所述电磁信号发送给控制板;控制板根据所接收的电磁信号控制显示面板的工作状态,并根据所述显示面板的工作状态信息判断是否对电磁笔位置进行识别。 [0023] The antenna receives electromagnetic signals from an electromagnetic plate pen and said electromagnetic signal is transmitted to the control panel; board according to the received electromagnetic signal controls the operating state display panel, and the panel according to the display operation state information is determined whether electromagnetic pen position to identify.

[0024] 上述方案中,所述控制板根据显示面板的工作状态信息判断是否对电磁笔位置进行识别为:在所述显示面板处于刷新状态时,控制板停止对接收的电磁信号进行处理,从而停止对电磁笔位置进行识别;在所述显示面板结束刷新状态后,控制板对接收的电磁信号进行处理,从而识别电磁笔的位置。 [0024] In the above embodiment, the operating state information based on the control board determines whether the display panel electromagnetic pen position identified as: when the display panel is in a refresh state, the control panel stops processing the received electromagnetic signal, whereby stop electromagnetic pen position identified; after the end of the refresh state display panel, the control panel of the received electromagnetic signal is processed to identify the position of the electromagnetic pen.

[0025] 上述方案中,所述控制板停止对接收的电磁信号进行的处理为:停止对电磁信号进行滤波整形处理、和/或停止对经滤波整形处理后的信号进行积分、和/或停止对所述积分波形进行采样。 [0025] In the above embodiment, the control board to stop processing the electromagnetic signals received are: electromagnetic stop signal is filtered shaping, and / or stop signal shaping process integrating the filtered and / or stop the integral waveform is sampled.

[0026] 上述方案中,该方法还包括:所述控制板根据相应的标志位,判断所述显示面板是否处于刷新状态;所述控制板根据显示面板刷新所耗费的时钟,判断显示面板的刷新状态是否结束。 [0026] In the above embodiment, the method further comprising: said control board according to the corresponding flag bit, determining whether the display panel is in a refresh state; display panel according to the refresh control board consumed clock, determines panel display refresh whether the state ends.

[0027] 本发明所提供的抗干扰的电磁手写装置及电磁笔位置识别方法中,天线板接收来自电磁笔的电磁信号,并将所述电磁信号发送给控制板;控制板根据所接收的电磁信号控制显示面板的工作状态,并在显示面板处于刷新状态时,控制板停止对接收的电磁信号进行处理,从而停止对电磁笔位置进行识别;在所述显示面板结束刷新状态后,控制板对接收的电磁信号进行处理,从而识别电磁笔的位置。 [0027] The electromagnetic apparatus handwriting pen position and electromagnetic interference recognition method of the present invention is provided, the antenna receiving electromagnetic signals from an electromagnetic plate pen and said electromagnetic signal is transmitted to the control panel; board according to the received electromagnetic signal controls the display panel of the operating state and a refresh state in the display panel, control panel stop processing the received electromagnetic signal, thereby stopping the electromagnetic pen position identified; refresh state after the end of the panel display panel of receiving an electromagnetic signal is processed to identify the position of the electromagnetic pen. 采用本发明所述的方案,能够有效避免显示面板刷新时的噪声干扰信号对电磁笔的影响,防止电磁笔的误动作。 Using the embodiment of the present invention can effectively avoid the effects of noise signals panel display refresh electromagnetic pen, to prevent malfunction of the electromagnetic pen.

附图说明 BRIEF DESCRIPTION

[0028] 图1为本发明抗干扰的电磁手写装置的构成示意图; [0028] FIG. 1 is a schematic configuration of an electromagnetic interference handwritten apparatus of the present invention;

[0029] 图2为本发明抗干扰的电磁手写装置中控制板的构成框图; [0029] FIG. 2 is a block diagram of a handwriting electromagnetic interference in the control panel of the present invention;

[0030] 图3为本发明抗干扰的电磁笔位置识别方法流程图。 [0030] FIG. 3 pen position electromagnetic interference recognition method of the present invention. FIG.

具体实施方式 Detailed ways

[0031] 本发明的基本思想是:天线板接收来自电磁笔的电磁信号,并将所述电磁信号发送给控制板;控制板根据所接收的电磁信号控制显示面板的工作状态,并根据所述显示面板的工作状态信息判断是否对电磁笔位置进行识别。 [0031] The basic idea of ​​the invention is: an antenna receiving electromagnetic signals from an electromagnetic plate pen and said electromagnetic signal is transmitted to the control panel; board display panel according to the operating state of the electromagnetic signal received from the control, and in accordance with the determining whether the operating status information on the display panel to identify the position of the electromagnetic pen.

[0032] 下面结合附图和具体实施例详细说明本发明所述方案。 [0032] The following detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0033] 本发明提供的电磁手写装置的结构如图1所示,该装置包括:显示面板10、层叠设置在显示面板10下方的天线板20、层叠设置在天线板20下方的控制板30、以及电磁笔40 ;其中,在控制板30上,搭载有构成电磁手写装置的各部分电路。 [0033] The structure of an electromagnetic device of the present invention to provide a handwritten shown in Figure 1, the apparatus comprising: a display panel 10, stacked on the display 20, 10 stacked beneath the antenna plate panel control board 30 below the plate 20 of the antenna, and an electromagnetic pen 40; wherein, on the control board 30, there are mounted magnetic circuit portions of the handwriting device. 电磁笔40的内部具有谐振电路(未图示),在电磁笔40靠近天线板20进行输入操作时,所述谐振电路可将接受到的电磁波通过谐振的方式生成较强的电磁笔信号。 Internal electromagnetic pen 40 having a resonant circuit (not shown), when the electromagnetic pen 40 close to the antenna input operation panel 20, the resonant circuit may receive a strong electromagnetic waves generated by the pen resonance mode signal.

[0034] 如图1所示,天线板20具有相互垂直设置的多个发送线圈201和多个接收线圈202。 A plurality of transmit coil 201 [0034] As shown, the antenna 201 has a plate arranged perpendicular to each other and a plurality of receiving coils 202. 在电磁笔40靠近天线板20进行输入操作时,由发送线圈201发送的电磁波被电磁笔40内的谐振电路(未图示)接收,谐振电路发生谐振并产生较强的电磁笔信号,该电磁笔信号可被多个接收线圈202接收,因此,通过对多个接收线圈202进行扫描,获取接收到的电磁波强度为最大的接收线圈202的坐标,即为电磁笔40的输入位置。 40 when the electromagnetic pen close to the antenna input operation panel 20, the electromagnetic waves transmitted by the transmission coil 201 is a resonance circuit (not shown) in the pen 40 receives electromagnetic resonant circuit resonates and generates a strong electromagnetic pen signal, the electromagnetic the pen may be a plurality of signal receiving coils 202 receives, thus, received by a plurality of coils 202 are scanned to obtain the intensity of electromagnetic wave received coordinates of the maximum reception coil 202, that is, the position of the input pen 40 of the solenoid.

[0035] 图2为电磁手写装置中控制板30的构成框图。 [0035] FIG. 2 is a block diagram of the apparatus 30 of the electromagnetic handwriting board. 如图2所示的电磁手写装置的控制板30包括:发送部301、接收部302、处理部303、和对上述各部分以及显示面板10的显示进行控制的控制部304。 Electromagnetic handwriting board 30 shown in FIG. 2 apparatus comprising: transmitting unit 301, receiving unit 302, the processing unit 303, and the respective portions of the display panel 10 and a display control unit 304 controls.

[0036] 发送部301具有信号发生器3011和多路选择开关3013。 [0036] The transmitting unit 301 includes a signal generator 3011 and a multiplexer 3013 switches. 信号发生器3011在控制部304的控制下,生成规定波形的电磁信号,对于生成的电磁信号,可经放大器3012放大为规定强度后提供给多路选择开关3013 ;多路选择开关3013由控制部304控制切换选择接通发送线圈201中的任意一个,从而能够对接通的发送线圈201进行扫描,并通过该选择接通的发送线圈发送所生成的电磁信号。 3011 signal generator controlled by the control unit 304 generates a predetermined waveform electromagnetic signals, for generating an electromagnetic signal can be amplified by the amplifier 3012 is supplied to the multiplexer predetermined intensity selection switch 3013; the multiplexer 3013 by the switch control unit 304 controls the switching oN an arbitrary selection of a transmitter coil 201, thereby scanning the transmission coil 201 is turned on, and turning on the selection by the transmission coil transmits electromagnetic signals generated.

[0037] 接收部302具有多路选择开关3021和放大部,在本实施例中,放大部包括:放大器3022和增益控制器3023。 [0037] The receiving portion 302 has a multiplexer switch unit 3021 and amplified, in the present embodiment, the amplification unit comprising: an amplifier 3022 and the gain controller 3023. 多路选择开关3021由控制部304控制切换选择接通多个接收线圈202中的任意一个,从而能够对接通的接收线圈202进行扫描,通过该接通的接收线圈202接收来自电磁笔的电磁信号;所述电磁信号经放大器3022进行放大,再经过增益控制电路3023进行增益控制后,输出至处理部303。 Multiplexer switch 3021 of the switching control unit 304 is turned on by the selection of any of a plurality of receiving coils 202 a, thereby scanning the receiving coil 202 is turned on, receives electromagnetic energy from the electromagnetic pen is turned on by receiving coil 202 signal; after said electromagnetic signal amplifier 3022 amplifies the gain control circuit 3023 and then through the gain control, the output to the processing unit 303.

[0038] 处理部303包括整形电路3031、积分电路3032和A/D采样电路3033。 [0038] The processing section 303 includes a shaping circuit 3031, the integration circuit 3032 and A / D sampling circuit 3033. 其中,整形电路3031,对来自接收部302的输入信号进行滤波整形处理;积分电路3032,对由整形电路3031处理后的信号进行积分,生成积分波形;A/D采样电路3033,对由积分电路3032得到的积分波形进行采样,并将采样所得的峰值对应的坐标转化为识别信息输入至控制部304。 Wherein the shaping circuit 3031, the input signal from the reception unit 302 performs filtering shaping process; integration circuit 3032, the signal is processed by a shaping circuit 3031 is integrated to generate an integrated waveform; A / D sampling circuit 3033, to the integration circuit 3032 obtained integral waveform is sampled and converted coordinates corresponding to the peak of the resulting sample identification information input to the control unit 304. 由于在A/D采样电路3033中采样所得的峰值对应的坐标信息与最接近于电磁笔的接收线圈202的位置相对应,因而,控制部304能够根据采样后生成的识别信息准确地识别出电磁笔40的位置。 Since the sampling coordinate information corresponding to the peak in the resulting A / D sampling circuit 3033 in the position closest to the electromagnetic coil 202 receives the pen corresponds, therefore, the control unit 304 can generate the identification information according to exactly determine the sampled solenoid the position of the pen 40.

[0039] 此外,控制部304还控制显示面板10的显示,如显示菜单、文本、图片等,因而显示面板10的工作状态分为两种,其中,一种状态是:正常显示页面内容的状态,另一种状态是:从显示菜单、文本或图片之间切换以及文本/图片翻页的刷新状态。 [0039] Further, the control unit 304 further controls the display panel 10 of the display, display menus, text, pictures, etc., and thus the operating state display panel 10 is divided into two, wherein a condition is: the state of normal display page content , and a state: switch from one display menus, text or image and text / image page refresh state. 在刷新状态下,显示面板10也会产生电磁波,由于显示面板10距离天线板20非常接近,因而天线板20中的接收线圈202也会接收到显示面板10刷新所产生的电磁波,在此称为噪声电磁波。 In the refresh state, the display panel 10 will generate electromagnetic waves, since the display panel 10 from the antenna is very close to the plate 20, thus receiving coil antenna 20 receives the electromagnetic wave plate 202 may also refresh the display panel 10 is generated, referred to herein as electromagnetic noise.

[0040] 显示面板10所产生的噪声电磁波存在于整个表面上,且分步不均匀,接收线圈202不仅会接收到电磁笔信号,同样也会接收到该噪声电磁波。 [0040] The electromagnetic noise generated by the display panel 10 is present on the entire surface, and the step unevenness, receives not only the electromagnetic coil 202 receives the pen signal, will also receive the electromagnetic noise. 当在处理部303中对该噪声电磁波进行处理时,由A/D米样电路3033对该噪声电磁波进行米样,从而误认为是因电磁笔40所产生的电磁信号,造成电磁手写装置的误动作。 When processing the electromagnetic noise in the processing unit 303, like the electromagnetic noise meter for the A / D sampling circuit 3033 meters, so that mistaken signal due to electromagnetic generated electromagnetic pen 40, resulting in bad handwriting electromagnetic means action.

[0041] 本发明中,在显示面板10处于刷新状态时,通过控制部304使处理部303停止对输入信号的处理,能够避免显示面板10刷新时所产生的噪声电磁波对电磁笔40位置识别产生的干扰,消除因噪声电磁波引起的误动作。 [0041] In the invention, when the display panel 10 is in a refresh state, the control unit 304 causes the processing unit 303 stops processing the input signal, it is possible to avoid electromagnetic noise when the display panel 10 to refresh generated by generating electromagnetic pen 40 position identification interference, eliminating malfunction due to noise caused by electromagnetic waves.

[0042] 基于上述电磁手写装置,本发明还提供了一种抗干扰的电磁笔位置识别方法,处理流程如图3所示,该方法包括以下步骤: [0042] Based on the above-described handwriting electromagnetic means, the present invention also provides a method of identifying an electromagnetic pen position of interference, the processing flow shown in Figure 3, the method comprising the steps of:

[0043] 步骤401:控制板判断显示面板是否处于刷新状态;如果显示面板处于刷新状态,则执行步骤402 ;否则,执行步骤404 ; [0043] Step 401: the control panel determines whether the display panel is in a refresh state; if the display panel is in a refresh state, execute step 402; otherwise, step 404 is performed;

[0044] 本步骤中,控制板能够从天线板202获取用户通过电磁笔40输入的电磁信号,并识别出电磁笔40的位置,也能够通过设置在控制部304上的接口(未图示)等,通过天线板202接收来自外部设备(未图示)的指令。 [0044] In this step, the control board can be obtained from the antenna plate 202 through a user input electromagnetic signal electromagnetic pen 40, the pen and identifies the position of the solenoid 40, it is possible via the interface 304 provided on the control unit (not shown) etc., receives an instruction from an external device (not shown) through an antenna plate 202.

[0045] 当用户通过电磁笔40发出翻页或类似操作指令时,控制部304根据接收到的操作指令控制显示面板10执行刷新操作,以使显示的画面刷新为新菜单、下页文本、或下幅图片等,此时,在显示面板处于刷新状态时,控制部304会生成相应的标志位,由此,控制部304可以根据该标志位判断显示面板10是否处于刷新状态;当显示面板处于刷新状态时,则执行步骤402 ;否则,执行步骤403。 [0045] When a page sent by the user 40 or the like electromagnetic pen operation command, the control unit 304 controls the operation instruction in accordance with the received display panel 10 performs a refresh operation to refresh the picture to appear as a new menu, the next page of text, or the pictures, etc. in this case, when the display panel is in a refresh state, the control unit 304 generates corresponding flag bit, whereby the control unit 304 can refresh the panel 10 in the state according to whether the display flag is determined; when the display panel is when you refresh the state, perform step 402; otherwise, step 403.

[0046] 步骤402:控制板停止对电磁笔位置进行识别; [0046] Step 402: Stop electromagnetic pen position control plate recognition;

[0047] 在本步骤中,控制部304判断显示面板10处于刷新状态时,向处理部303发送指令,使处理部303停止对输入信号进行处理。 When [0047] In this step, the control unit 304 determines whether the display panel 10 is in a refresh state, the processing unit 303 sends an instruction, the processing unit 303 stops processing the input signal. 在本实施例中,控制部304控制处理部303中的A/D采样电路3033停止对输入信号采样,使控制部304停止对电磁笔位置进行识别,此时,即使显示面板10刷新时产生的噪声电磁波被接收线圈202接收,也不会被认为是电磁笔40的输入信号,能够避免电磁手写装置I的误动作。 In the present embodiment, the control unit 304 controls the processing unit 303 A / D sampling circuit 3033 samples the input signal stops, so that the control unit 304 stops electromagnetic pen position to identify, at this time, when the panel 10 is produced even if the display refresh electromagnetic noise received by the receiving coil 202, is not considered to be an electromagnetic signal input pen 40, it is possible to avoid erroneous operation of the electromagnetic means I handwriting.

[0048] 步骤403:判断显示面板的刷新状态是否结束,如果刷新结束,则执行步骤404 ;否贝丨J,返回步骤402 ; [0048] Step 403: determining whether the display panel is completed refresh state, if the refreshing is completed, step 404; NO shellfish J Shu, returns to step 402;

[0049] 本步骤中,控制部304判断显示面板10的刷新状态是否结束,若显示面板刷新状态结束,则执行步骤404 ;若显示面板刷新状态未结束,则返回步骤402。 [0049] In this step, the control unit 304 determines whether the display panel 10 of the end of the refresh state, if the state of the refresh end panel, the display step 404 is performed; if not finished display panel refresh state, returns to step 402. 本实施例中,控制部304可以根据显示面板刷新所耗费的时钟,来判断刷新状态是否结束,其中,显示面板10的刷新所耗费的时钟取决于显示面板采用的更新模式。 In this embodiment, the clock control unit 304 can refresh the display panel consuming, determines whether the end of the refresh state, wherein the display panel 10 takes the refresh clock depending on the display panel used in the update mode.

[0050] 步骤404:控制板根据接收的电磁信号识别电磁笔的位置,并返回步骤401。 [0050] Step 404: The control board position recognition electromagnetic signal received electromagnetic pen, and returns to step 401.

[0051 ] 本步骤中,处理部303对输入信号进行处理并生成识别信息,控制部304根据生成的识别信息继续识别电磁笔40的位置,并返回步骤401 ;本实施例中,处理部对输入信号的处理为:处理部中的A/D采样电路3033对输入信号进行采样。 [0051] In this step, the processing unit 303 processes the input signal and generates the identification information, the control unit 304 continues to identify the location of the electromagnetic pen 40 in accordance with the generated identification information, and returns to step 401; the present embodiment, the processing unit on the input processing signals for: processing unit in an a / D sampling circuit samples the input signal 3033 pairs.

[0052] 本实施例中,在显示面板10处于刷新状态时,控制部304通过关闭处理部303中的A/D采样电路3033,使处理部303停止采样,从而使控制部304停止识别电磁笔的位置,能够避免显示面板10刷新时所产生的噪声电磁波对电磁笔40位置识别产生的干扰,消除因噪声电磁波引起的误动作。 [0052] In this embodiment, when the display panel 10 is in a refresh state, the control unit 304 by closing the processing unit 303 A / D sampling circuit 3033, the processing unit 303 stops sampling, so that the control portion 304 stops the identification electromagnetic pen position, it is possible to avoid interference of the display panel 10 when the electromagnetic noise generated by the refresh electromagnetic pen 40 position recognition generated, eliminating malfunction due to noise caused by electromagnetic waves.

[0053] 此外,控制部304还可以通过关闭处理部303中整流电路、积分电路及A/D采样电路中的任意一个或多个电路,以达到与上述实施例相同的效果。 [0053] Further, the control unit 304 may also shut down by the processing unit 303 rectifying circuit, an integrating circuit and A / D sampling circuit in any one or more circuits, to achieve the above-described embodiment the same effect. 在使处理部303的多个或全部电路关闭时,还能够进一步降低电磁手写装置的功耗,有利于本装置的移动应用。 In the process portion or all of the plurality of circuit 303 is turned off, the power consumption can be reduced further handwritten electromagnetic means, facilitate the application of the mobile device.

[0054] 以上所述,仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。 [0054] The above are only preferred embodiments of the present invention but are not intended to limit the scope of the present invention, any modifications within the spirit and principle of the present invention, equivalent replacements and improvements are It is included within the scope of the present invention.

Claims (8)

1.一种抗干扰的电磁手写装置,包括:显示面板、设置在所述显示面板下方的天线板、设置在所述天线板的下方的控制板、及内部具有电磁谐振电路的电磁笔,其特征在于, 所述控制板,用于根据天线板发送的电磁信号控制显示面板的工作状态,以及根据所述显示面板的工作状态信息,判断是否对电磁笔位置进行识别;所述控制板根据显示面板的工作状态信息判断是否对电磁笔位置进行识别为:在所述显示面板处于刷新状态时,控制板停止对接收的电磁信号进行处理,从而停止对电磁笔位置进行识别;在所述显示面板结束刷新状态后,控制板对接收的电磁信号进行处理,从而识别电磁笔的位置。 An electromagnetic interference handwriting device, comprising: a display panel disposed under the display panel antenna board, the control board is disposed below the antenna boards, and the internal electromagnetic pen has an electromagnetic resonant circuit, which characterized in that said control board, to the operating state of the panel, and determines whether the electromagnetic pen position according to the identification information display panel according to the operating state of the electromagnetic signal transmitted from the control display panel antenna; according to the display panel whether the operating state information judging panel electromagnetic pen position to identify: when the display panel is in a refresh state, the control panel stops processing the received electromagnetic signal, thereby stopping the electromagnetic pen position identified; the display panel after the refresh state, the control panel of the received electromagnetic signal is processed to identify the position of the electromagnetic pen.
2.根据权利要求1所述的电磁手写装置,其特征在于,所述控制板包括:发送部、接受部、处理部、及控制部;其中, 发送部,用于向所述天线板发送电磁信号; 接收部,用于将天线板接收的电磁信号生成输入信号,并发送给处理部; 处理部,用于对所述输入信号进行处理,生成识别信息并发送给控制部; 控制部,用于根据所述识别信息识别电磁笔的位置,并且在所述显示面板处于刷新状态时,使处理部停止对输入信号的处理;在所述显示面板结束刷新状态后,使处理部继续对输入信号进行处理。 2. The electromagnetic device of handwriting according to claim 1, wherein said control panel comprising: a transmitting unit, receiving unit, processing unit, and a control unit; wherein the transmitting unit, for transmitting to said electromagnetic antenna plate signal; receiving unit, an antenna for receiving an electromagnetic signal plate generates an input signal, and sends the processing unit; a processing unit for processing the input signal, and sends the identification information to generate a control section; and a control unit, with according to the identification information to identify the location of an electromagnetic pen, and when the display panel is in a refresh state, the processing unit stops the processing of the input signal; the display panel after the end of the refresh state, the input signal processing unit continues for processing.
3.根据权利要求2所述的电磁手写装置,其特征在于,所述发送部包括:信号发生器和第一多路选择开关;其中, 信号发生器,用于产生规定波形的电磁信号; 第一多路选择开关,用于选择接通所述天线板中的发送线圈,并通过所述发送线圈发送所产生的电磁信号。 3. The electromagnetic device of handwriting according to claim 2, wherein said transmitting unit comprises: a signal generator and a first multiplexer switch; wherein the signal generator for generating an electromagnetic signal of a predetermined waveform; a second more than one selector switch for selecting a transmitting coil turns of the antenna plate, and transmission coil transmitting an electromagnetic signal produced by said.
4.根据权利要求2所述的电磁手写装`置,其特征在于,所述接收部包括:第二多路选择开关和放大部;其中, 第二多路选择开关,用于选择接通所述天线板中的接收线圈,并通过所述接收线圈将接收到的电磁信号输出给放大部; 放大部,用于对所接收到的电磁信号进行放大,生成所述输入信号并发送给处理部。 The electromagnetic means' opposing the handwriting of claim 2, wherein said receiving portion comprises: a second multiplexer switching and amplifying portion; wherein the second multiplexer switch for selecting the ON said coil antenna receiving plate and the receiving electromagnetic signals outputted by the amplifying unit to the receiving coil; amplifying unit, for receiving the electromagnetic signal is amplified to generate the input signal processing unit sends .
5.根据权利要求2所述的电磁手写装置,其特征在于,所述处理部包括:整形电路、积分电路、A/D采样电路;其中, 整形电路,用于对来自所述接收部的输入信号进行滤波整形处理; 积分电路,用于对经滤波整形处理后的输入信号进行积分,生成积分波形; A/D采样电路,用于对所述积分波形进行采样,将采样所得的峰值对应的坐标转化为识别信息发送给控制部。 The electromagnetic handwriting device according to claim 2, wherein said processing unit comprising: a shaping circuit, the integrating circuit, A / D sampling circuit; wherein the shaping circuit, an input for receiving from said unit signal shaping filter; integration circuit for an input signal by integrating the filtered shaping process, generating an integrated waveform; a / D sampling circuit for sampling the integral waveform, the peak corresponding to the obtained sample coordinate conversion to send the identification information to the control unit.
6.一种抗干扰的电磁笔位置识别方法,其特征在于,该方法包括: 天线板接收来自电磁笔的电磁信号,并将所述电磁信号发送给控制板;控制板根据所接收的电磁信号控制显示面板的工作状态,并根据所述显示面板的工作状态信息判断是否对电磁笔位置进行识别; 在所述显示面板处于刷新状态时,控制板停止对接收的电磁信号进行处理,从而停止对电磁笔位置进行识别;在所述显示面板结束刷新状态后,控制板对接收的电磁信号进行处理,从而识别电磁笔的位置。 An electromagnetic interference pen position recognition method, characterized in that, the method comprising: an antenna receiving electromagnetic signals from an electromagnetic plate pen and said electromagnetic signal is transmitted to the control panel; board according to the received electromagnetic signal the operating state controlling the display panel, the panel and the operating state information determines whether electromagnetic pen position identified according to the display; when the display panel is in a refresh state, the control panel stops processing the received electromagnetic signal to stop electromagnetic pen position identified; after the end of the refresh state display panel, the control panel of the received electromagnetic signal is processed to identify the position of the electromagnetic pen.
7.根据权利要求6所述的方法,其特征在于,所述控制板停止对接收的电磁信号进行处理为:停止对电磁信号进行滤波整形处理、和/或停止对经滤波整形处理后的信号进行积分、和/或停止对所述积分波形进行采样。 7. The method according to claim 6, wherein said control plate stops processing the received electromagnetic signal is: stop electromagnetic signal shaping filter, and / or stopping the filtered signal shaping processing integrating, and / or stopping the integration waveform is sampled.
8.根据权利要求6所述的方法,其特征在于,该方法还包括:所述控制板根据相应的标志位,判断所述显示面板是否处于刷新状态;所述控制板根据显示面板刷新所耗费的时钟,判断显示面板的刷新状态是否结束。 8. The method according to claim 6, wherein the method further comprises: the display panel of the board in the refresh state according to whether the corresponding flag bit is determined; the control plate consuming refresh the display panel clock, determine whether to refresh the status display panel is completed. ` `
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