CN102799335A - Digitizer with phase lock loop - Google Patents

Digitizer with phase lock loop Download PDF

Info

Publication number
CN102799335A
CN102799335A CN2011101382739A CN201110138273A CN102799335A CN 102799335 A CN102799335 A CN 102799335A CN 2011101382739 A CN2011101382739 A CN 2011101382739A CN 201110138273 A CN201110138273 A CN 201110138273A CN 102799335 A CN102799335 A CN 102799335A
Authority
CN
China
Prior art keywords
circuit
signal
electromagnetic
electromagnetic wave
frequency
Prior art date
Application number
CN2011101382739A
Other languages
Chinese (zh)
Inventor
谢政良
Original Assignee
太瀚科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 太瀚科技股份有限公司 filed Critical 太瀚科技股份有限公司
Priority to CN2011101382739A priority Critical patent/CN102799335A/en
Publication of CN102799335A publication Critical patent/CN102799335A/en

Links

Abstract

The invention relates to a digitizer with a phase lock loop. The digitizer with the phase lock loop comprises a transmitting circuit, an application circuit, a sensor board and a receiving circuit, wherein the transmitting circuit is used for generating an electromagnetic wave signal; the application circuit is used for controlling the transmitting circuit to generate the electromagnetic wave signal; the sensor board receives electromagnetic wave energy and emits the electromagnetic wave energy for an electromagnetic pen to receive; and the receiving circuit is used for receiving a resonance signal which is formed by the resonation of the electromagnetic pen, and transmitting the resonance signal to the application circuit. The phase lock loop is used for adjusting frequency so as to control the transmitting circuit to transmit the electromagnetic wave signal with new frequency.

Description

具锁相电路的数字板 A digital phase lock circuit board with

技术领域 FIELD

[0001] 本发明是有关于一种数字板(Digitizer),特别是关于一种具有锁相电路的数字板,让电磁笔可接收到最大能量。 [0001] The present invention relates to a digital board (Digitizer), particularly to a digital phase lock circuit having a plate, so that electromagnetic pen may receive maximum energy.

背景技术 Background technique

[0002]目前的电磁式数字板(Digitizer)技术中,主要以被动式电磁式触控技术为主。 [0002] Current digital magnetic plate (Digitizer) technology, mainly passive electromagnetic touch-based technology. 图IA显示传统的被动式电磁式数字板10的示意图。 FIG IA shows a schematic diagram of a conventional passive electromagnetic digitizer 10. 如图IA所示,传统的数字板10的应用电路102控制发送电路104传送一电磁波给感应天线板106。 As shown in FIG IA, the application of conventional digital circuit board 102 controls the transmission circuit 10 transmits an electromagnetic wave 104 to the induction antenna plate 106. 感应天线板(sensorboard) 106会发射一固定频率(例如:375Khz)给电磁笔108,此频率称为基频,而电磁笔108上的振荡电路会设计与基频相同的振荡点。 Inductive antenna plate (sensorboard) 106 emits a fixed frequency (e.g.: 375Khz) to the electromagnetic pen 108, this frequency is called the fundamental frequency, and the oscillation circuit and the base will be designed on the same frequency electromagnetic pen 108 oscillating point. 当感应电路板106发送出电磁波给电磁笔108感应时,电磁笔108上的震荡电路产生共振,此时会收到最强的电磁波能量。 When the sensor circuit board 106 transmits electromagnetic waves to the electromagnetic induction pen 108, the oscillation circuit 108 generates an electromagnetic resonance pen, this time will receive the strongest electromagnetic energy. [0003] 电磁笔108上的振荡电路为LC振荡电路,而电磁笔108为做到下压时的产生压力阶度,电磁笔108下压时会改变L或改变C来改变频率点。 [0003] The oscillator circuit 108 as an electromagnetic pen LC oscillating circuit, and the electromagnetic pen 108 is generated when the pressure to achieve the degree of pressure gradient, when the electromagnetic pen L will change the pressure at 108 C or changing the point to change the frequency. 当感应天线板106收到不同于基频的频率时,会进行压力的处理而产生出压力的阶度。 When the sensor antenna plate 106 is different from the fundamental frequency of the received frequency, process pressure will be generated in the pressure gradation.

[0004] 当电磁笔108下压后,电磁笔108的共振频率点会线性变化,而造成电磁笔108上的LC振荡电路对基频的共振点偏移。 [0004] When the electromagnetic pen 108 under pressure, an electromagnetic pen point linearly changes in the resonance frequency 108, causing the LC tank circuit 108 pen fundamental frequency electromagnetic resonance point shifts. 当感应天线板106还是发射基频频率时,电磁笔108收到的能量不是最大的,有部分电磁波散失掉,如图IB所示。 When the sensor plate 106 or transmit antenna baseband frequency, electromagnetic energy received by the pen 108 is not the largest, some wave dissipated, as shown in FIG IB. 所以当电磁笔108下压时,共振产生的能量不强,回馈给感应天线板106的能量也就更弱,容易造成电磁笔108下压后的不稳定,进而造成触控辨识的错误。 When the solenoid 108 under the pen pressure is not strong resonance energy, inductive energy back to the antenna plate 106 also weaker, likely to cause instability in the electromagnetic pen pressure at 108, thereby causing the erroneous touch recognition. 因此,如果感应天线板发送的能量频率可以追随电磁笔的频率变化,当电磁笔的震荡频率偏移时,感应天线板发出相对偏移的共振频率点,当电磁笔下压后,振荡点无论如何偏移,感应天线板都可以发出相对应的共振频率,此时电磁笔都会收到最大能量。 Thus, if the frequency of the induction energy transmitting antenna plate can follow the change in frequency of the electromagnetic pen, when the oscillation frequency electromagnetic pen offset inductive antenna plate at a resonant frequency relative offset point, when the electromagnetic pen pressure, the oscillating point anyway offset inductive antenna plate may be issued corresponding to the resonance frequency, the electromagnetic pen case will receive maximum energy.

[0005] 由此可见,上述现有的数字板在结构与使用上,显然仍存在有不便与缺陷,而亟待加以进一步改进。 [0005] Thus, the above-described conventional digital board in structure and use, there is clearly still problems and disadvantages, and the urgent need to be further improved. 因此如何能创设一种新型结构的具锁相电路的数字板,亦成为当前业界极需改进的目标。 So how can we create a digital phase-locked circuit board with a new structure, the current has become the industry in dire need of improvement goals.

发明内容 SUMMARY

[0006] 本发明的目的在于,克服现有的数字板存在的缺陷,而提供一种新型结构的具锁相电路的数字板,所要解决的技术问题是使其数字板具有一锁相电路,利用该锁相电路控制一电磁波信号的频率,非常适于实用。 [0006] The object of the present invention is to solve the problems of the conventional digital plate, and the plate provide a digital phase lock circuit having a novel structure to solve the technical problem that it has a digital phase lock circuit board, the use of a phase lock circuit controls the frequency of the electromagnetic wave signal, very suitable for practical use.

[0007] 本发明的另一目的在于,提供一种新型结构的具锁相电路的数字板,所要解决的技术问题是使其可控制数字板的共振信号产生漂移后,数字板可以调整电磁波信号以降低误差,从而更加适于实用。 [0007] Another object of the present invention is to provide a digital phase lock circuit board having a new structure, the technical problem to be solved is to generate the resonance signal so that it can control the digital shift plate, an electromagnetic wave signal to adjust the digital board to reduce the error, which is more suitable for practical use.

[0008] 本发明的目的及解决其技术问题是采用以下技术方案来实现的。 [0008] The objects and solve the technical problem of the invention is achieved by the following technical solutions. 依据本发明提出的一种具锁相电路的数字板,其中包含一发送电路,用于产生一电磁波信号;一应用电路,用于控制该发送电路产生该电磁波信号;一天线感应板,用于接收该电磁波能量,并将该电磁波能量发射出,让一电磁笔接收;以及一接收电路,用于接收该电磁笔所共振出的一共振信号,并将该共振信号传输至该应用电路;其中该锁相电路用于调整频率,进而控制该发送电路传送具有新频率的该电磁波信号。 According to the digital phase lock circuit having a plate for a proposed according to the invention, which comprises a transmission circuit for generating an electromagnetic signal; an application circuit, the transmission circuit for generating the electromagnetic control signal; antenna tablet, for receiving the electromagnetic wave energy, and the emitted electromagnetic wave energy, so that a receiving electromagnetic pen; and a receiving circuit for receiving the electromagnetic resonance pen out a resonance signal, and the signal is transmitted to the resonant circuit is applied; wherein the phase lock circuit for adjusting the frequency, and thus controls the transmitting circuit of the electromagnetic wave signal having a new frequency.

[0009] 本发明的目的及解决其技术问题还可采用以下技术措施进一步实现。 [0009] objects and solve the technical problem of the present invention can also be further achieved by the following technical measures.

[0010] 前述的数字板,其中所述的上述的该应用电路比较该电磁波信号与该共振信号的频率。 [0010] the number plate, wherein the application of the above circuit for comparing the frequency of the electromagnetic signal and the resonance signal.

[0011] 前述的数字板,其中所述的若该电磁波信号的频率不同于该共振信号,该锁相电路调整该电磁波信号的频率,让该发送信号传送新频率的该电磁波信号。 [0011] the number plate, if the frequency of the electromagnetic wave signal is different from the resonance signal, wherein the phase lock circuit to adjust the frequency of the electromagnetic wave signal, an electromagnetic wave signal so that the transmission signal is transmitted to the new frequency.

[0012] 前述的数字板,其中所述的上述的让电磁笔可以一直接收到最强的该电磁波信号的能量,进而降低辨识的误差。 [0012] the number plate, wherein the above-described electromagnetic pen allows a direct energy can receive the strongest signal of the electromagnetic wave, thereby reducing the error identification. [0013] 前述的数字板,其中所述的上述的数字板为一电磁式数字板。 [0013] the number plate, wherein the plate is a digital electromagnetic digitizer.

[0014] 前述的数字板,其中所述的上述的数字板为一被动式电磁式数字板。 [0014] the number plate, wherein the plate is a digital passive electromagnetic digitizer.

[0015] 本发明的目的及解决其技术问题还采用以下技术方案来实现。 [0015] objects and solve the technical problem of the invention is also achieved by the following technical solution. 依据本发明提出的一种具锁相电路的数字板,其中包含一发送电路,用于产生一电磁波信号;一应用电路,电性连接该发送电路,且用于控制该发送电路产生该电磁波信号;一天线感应板,电性连接该发送电路以接收该电磁波能量,并将该电磁波能量发射出,让一电磁笔接收;以及一接收电路,电性连接该天线感应板与该应用电路,用于接收该电磁笔所共振出的一共振信号,并将该共振信号传输至该应用电路;其中该应用电路比较该电磁波信号与该共振信号的频率,若该电磁波信号的频率不同于该共振信号,该锁相电路调整该电磁波信号的频率,让该发送电路传送新频率的该电磁波信号。 According to the digital phase lock circuit having a plate for a proposed according to the invention, which comprises a transmission circuit for generating an electromagnetic signal; an application of the transmission circuit circuit electrically connected, and the transmission circuit for generating the electromagnetic control signal ; tablet antenna, electrically connected to the transmission circuit to receive the electromagnetic wave energy, and the emitted electromagnetic wave energy, so that a receiving electromagnetic pen; and a receiving circuit electrically connected to the sensing plate and the antenna circuit application, with the electromagnetic pen to receiving a resonance signal out of the resonance, and the resonance signal is transmitted to the application circuit; wherein the signal application circuit compares the frequency of the electromagnetic wave of the resonance signal, which resonance signal when the frequency of the electromagnetic wave signal is different from the electromagnetic wave signal of the phase lock circuit adjusts the frequency of the electromagnetic wave signal, so that the new frequency of the transmitting circuit.

[0016] 本发明的目的及解决其技术问题还可采用以下技术措施进一步实现。 [0016] objects and solve the technical problem of the present invention can also be further achieved by the following technical measures.

[0017] 前述的数字板,其中所述的上述的数字板为一电磁式数字板。 [0017] the number plate, wherein the plate is a digital electromagnetic digitizer.

[0018] 前述的数字板,其中所述的上述的数字板为一被动式电磁式数字板。 [0018] the number plate, wherein the plate is a digital passive electromagnetic digitizer.

[0019] 本发明与现有技术相比具有明显的优点和有益效果。 [0019] The prior art and the present invention has obvious advantages and beneficial effects compared. 由以上技术方案可知,本发明的主要技术内容如下:揭露一种具锁相电路的数字板(Digitizer),其包含发送电路、应用电路、天线感应板与接收电路。 Seen from the above technical solutions, the main technical contents of the present invention is as follows: having discloses a digital phase-locked circuit board (Digitizer), which comprises a transmitting circuit, the application circuit, the antenna and the reception circuit tablet. 发送电路用于产生一电磁波信号。 A transmitting circuit for generating an electromagnetic wave signal. 应用电路用于控制发送电路产生电磁波信号。 Application of the circuit for controlling the transmission circuit generates electromagnetic signals. 天线感应板接收电磁波能量,并将电磁波能量发射出,让一电磁笔接收。 Antenna tablet receiving electromagnetic wave energy, and the emitted electromagnetic wave energy, so that a receiving electromagnetic pen. 接收电路,用于接收电磁笔所共振出的一共振信号,并将该共振信号传输至该应用电路。 A receiving circuit for receiving electromagnetic resonance pen out a resonance signal, and the resonant circuit signal is transmitted to the application. 其中锁相电路用于调整频率,进而控制发送电路传送具有新频率的电磁波信号。 Wherein the phase lock circuit for adjusting the frequency, and thus the control signal transmission circuit transmits an electromagnetic wave having a new frequency. 又揭露另一种具锁相电路的数字板(Diitizer),其包含发送电路、应用电路、天线感应板与接收电路。 Discloses yet another phase lock circuit having a digital board (Diitizer), which comprises a transmitting circuit, the application circuit, the antenna and the reception circuit tablet. 发送电路用于产生一电磁波信号。 A transmitting circuit for generating an electromagnetic wave signal. 应用电路电性连接发送电路,且用于控制发送电路产生电磁波信号;天线感应板电性连接发送电路以接收电磁波能量,并将电磁波能量发射让一电磁笔接收。 Application of electrical circuit connecting a transmission circuit, and for controlling the transmission circuit to generate an electromagnetic wave signal; an antenna electrically connected to the sensing plate transmission circuit to receive electromagnetic energy, and electromagnetic wave energy emitting electromagnetic pen allows a receiver. 接收电路电性连接天线感应板与应用电路,其用于接收电磁笔所共振出的一共振信号,并将共振信号传输至应用电路。 An antenna electrically connected to the reception circuit board and the application circuit inductor for receiving electromagnetic resonance pen out a resonance signal, and the resonant circuit is applied to the signal transmission. 其中应用电路比较电磁波信号与共振信号的频率,若电磁波信号的频率不同于共振信号,锁相电路调整电磁波信号的频率,让发送电路传送新频率的电磁波信号。 Wherein the frequency of electromagnetic wave application circuit compares the signal with a resonance signal, an electromagnetic wave signal if the frequency of the electromagnetic wave signal is different from the resonance signal, phase lock circuit adjusts the frequency electromagnetic wave signal, so that the new frequency transmitting circuit. 借由上述技术方案,本发明具锁相电路的数字板至少具有下列优点及有益效果:数字板具有一锁相电路,利用该锁相电路控制一电磁波信号的频率。 By means of the above technical solutions, the digital board with a phase lock circuit of the present invention have at least the following advantages and beneficial effects: a plate having a digital phase locked loop, phase lock circuit controls the frequency with which an electromagnetic wave signal. 可控制数字板的共振信号产生漂移后,数字板可以调整电磁波信号以降低误差。 After generating resonance signals control the digital shift plate, the digital board can be adjusted to reduce the error signal of the electromagnetic wave. 只要电磁笔产生偏移,应用电路就会将接收回来的信号跟上一笔接收回来的信号做比对,若产生信号偏移,应用电路则根据信号偏移量控制锁相电路调整频率,进而控制发送电路传送新频率的电磁波能量。 Generating electromagnetic pen long offset application circuit will keep the signal received back a sum signal received back than to do, if the offset signal, in accordance with the application circuit generates a control signal offset phase locked loop adjusts the frequency, and further electromagnetic energy transmitting circuit control new frequency.

[0020] 上述说明仅是本发明技术方案的概述,为了能够更清楚了解本发明的技术手段,而可依照说明书的内容予以实施,并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂,以下特举较佳实施例,并配合附图,详细说明如下。 [0020] The above description is only an overview of the technical solution of the present invention, in order to more fully understood from the present invention, but may be implemented in accordance with the contents of the specification, and in order to make the aforementioned and other objects, features and advantages of the present invention can be more apparent from the following Patent cited preferred embodiments accompanied with figures are described in detail below.

附图说明 BRIEF DESCRIPTION

[0021] 图IA为传统的数字板的示意图; [0021] FIG IA is a schematic diagram of the conventional digital plate;

[0022] 图IB为传统的数字板的信号示意图; [0022] FIG. IB is a schematic diagram of a conventional digital signal plate;

[0023] 图2A为本发明的具展频电路数字板的示意图;及 [0023] FIG 2A with the present invention show a schematic diagram of a digital frequency divider circuit board; and

[0024] 图2B为本发明的数字板的信号示意图。 [0024] FIG signal 2B a schematic view of the digital board of the present invention.

[0025] [0025]

10: 数字板 102: 应用电路 104: 发送电路 10: digital board 102: application circuit 104: transmission circuit

106: 天线感应板108: 电磁笔 110: 接收电路 106: antenna 108 tablet: electromagnetic pen 110: reception circuit

20: 数字板 202: 应用电路 204: 发送电路 20: Digital board 202: Application circuit 204: transmission circuit

206: 天线感应板208: 电磁笔 210: 接收电路212: 锁相电路 206: antenna 208 tablet: electromagnetic pen 210: reception circuit 212: phase lock circuit

具体实施方式 Detailed ways

[0026] 为更进一步阐述本发明为达成预定发明目的所采取的技术手段及功效,以下结合附图及较佳实施例,对依据本发明提出的具锁相电路的数字板 [0026] To further elaborate the technical means and effects the present invention is predetermined to achieve the object of the invention taken in conjunction with the accompanying drawings and the following preferred embodiments, with phase lock circuit according to the present invention provides a digital plate

[0027] 其具体实施方式、结构、特征及其功效,详细说明如后。 [0027] Specific embodiments, structure, characteristics and efficacy, as will be described in detail.

[0028] 图2显示本发明的具展频电路数字板的示意图。 [0028] FIG. 2 shows a schematic view of a circuit board having a digital frequency development of the present invention. 如图2所示,在此实施例的数字板20主要包含应用电路22、发送电路204,感应天线板(sensor board) 206、电磁笔208,接收电路210与锁相(Phase Lock Loop, PU)电路212。 2, the digital board 20 of this embodiment mainly includes an application circuit 22, transmitting circuit 204, an inductive antenna board (sensor board) 206, an electromagnetic pen 208, a receiving circuit 210 and phase-locked (Phase Lock Loop, PU) circuit 212. 发送电路204分别与应用电路202和感应天线板206电性连接,数字板20的应用电路202用于对电磁笔的触控坐标与压力作计算,且控制应用电路202控制发送电路204对感应天线板206做发送或停止发送固定频率的电磁波(又称基频信号)。 The transmission circuit 204 and 206 are electrically application circuit 202 and the sensing plate connected to the antenna, the digital board 20 application circuit 202 for the pressure on the touch coordinate calculation for electromagnetic pen, and the control circuit 202 controls the application of an inductive antenna circuit 204 transmits or plate 206 stops transmitting electromagnetic waves do transmit a fixed frequency (also called baseband signal). 此时,感应天线板206会将所接收的固定频率(例如:375KHz)的电磁波信号发送给电磁笔208,而电磁笔208上的LC共振电路(未图标)会产生共振。 At this time, the sensing plate 206 will be received by an antenna fixed frequency (e.g.: 375KHz) signal is transmitted to the electromagnetic waves pen 208, and the LC resonant circuit 208 in the electromagnetic pen (not shown) will resonate. 当电磁笔208下压时(即做书写的动作)会改变L或是改变C来改变频率点,接收电路210在接收到不同于基频频率的信号时,会将信号传送至应用电路202进行压力处理而产生出压力阶度。 When the electromagnetic pen 208 under pressure (i.e., do writing operation) will change L or C changes to change the frequencies, the reception circuit 210 when receiving a signal different from the fundamental frequency of the signal will be transmitted to the application circuit 202 pressure process to produce the pressure gradation. 而锁相电路212分别与应用电路202与发送电路204电性连接。 The phase locked loop 212 are respectively connected to the application circuit 202 and transmission circuit 204 electrically.

[0029] 然而,依旧参阅图2,不同于传统的数字板,本发明的应用电路202先控制锁相电路212设定要发送能量的频率,再由应用电路202控制发送电路204对感应天线板206做发送或停止发送电磁波信号的控制。 [0029] However, still referring to FIG 2, unlike the conventional digital plate, the present invention is applied to circuit 202 control circuit 212 phase-locked to the set frequency energy transmission, then the transmission circuit 202 by the application control circuit 204 to the induction antenna plate 206 do transmission or stopping the transmission of electromagnetic wave signals. 当发送完电磁波能量后,应用电路202控制接收电路210对天线做接收及停止接收电磁笔208反馈回来的能量。 After completion of the transmission electromagnetic wave energy, the application control circuit 202 to make the reception circuit 210 and receiving antenna 208 to stop receiving the electromagnetic energy is fed back to the pen. 接收完后,应用电路202会去对信号做处理,进而送出坐标及压力值(触控辨识)。 After receiving the application circuit 202 will go on to do the signal processing, and further coordinate sending pressure value (touch recognition). 在做下次信号发射与接收动作之前,本发明的应用电路202会将接收回来的信号跟上一笔接收回来的信号做比对,判断出电磁笔是否下压。 Before doing the next signal transmitting and receiving operation, the circuit 202 will apply the present invention to keep the signal received back a sum signal received back do match, it is determined whether the electromagnetic pen pressure. 如果电磁笔208的共振点偏移后,应用电路202会控制锁相电路212调整频率,使得频率可以追随电磁笔208上的共振点做调整让发送电路204可以发送不同于之前基频频率(如375Khz)的电磁波给电磁笔208,让电磁笔208可以一直接收到最强的能量,进而降低辨识的误差。 If the electromagnetic resonance point pen 208 of the offset application circuit 202 controls the phase locked loop 212 adjusts the frequency, so that the resonance frequency can follow the point on the electromagnetic pen 208 transmitting circuit 204 to make adjustments so that the fundamental frequency may be different from the previously transmitted (e.g. 375kHz) to the electromagnetic waves pen 208, so that electromagnetic pen 208 can receive a direct strongest energy, thereby reducing the error identification.

[0030] 图2B显示本发明的数字板的信号示意图。 [0030] Figure 2B shows a schematic view of the signal of the digital board according to the present invention. 如图2B所示,举例来说,当基频频率在375KHz时,电磁笔208的共振频率也在375KHz。 As shown in FIG. 2B, for example, when the fundamental frequency at 375 kHz, the resonant frequency electromagnetic pen 208 also 375KHz. 当电磁笔208下压时,共振频率偏移至385KHz,应用电路202控制锁相电路206将发送电路204所要发射的基频频率转换成385KHZ。 When the solenoid 208 under the pen pressure, the resonance frequency is shifted to 385 kHz, phase locked loop application circuit 202 controls the transmitting circuit 206 of the base 204 to be transmitted is converted into frequencies 385KHZ. 所以电磁笔208不会因为共振频率的偏移而造成接收的基频信号产生误差,进而导致触控辨识的错误。 Therefore, electromagnetic pen 208 will not be caused by resonant offset frequency of the received baseband signal errors, leading to a false touch identification. 然而,在此需要说明的是,上述的频率值375KHZ与385KHZ仅是解释电磁笔208偏移问题,而非限制本发明的数字板20的所能发射的能量频率仅限于375KHZ与385KHz。 However, this should be noted that the frequency values ​​are merely explain 375KHZ to 385KHZ electromagnetic pen 208 offset problem, not limitation of the present invention the digital board 20 can be emitted only 375KHZ frequency energy and 385KHz. 只要电磁笔208产生偏移,应用电路202就会将接收回来的信号跟上一笔接收回来的信号做比对,若产生信号偏移,应用电路202则根据信号偏移量控制锁相电路212调整频率,进而控制发送电路204传送新频率的电磁波能量。 As long as the electromagnetic pen 208 generates an offset application circuit 202 will keep the signal received back a sum signal received back do match, generating a signal when the offset application circuit 202 in accordance with a control signal offset phase lock circuit 212 adjusting the frequency, and thus controls the transmission circuit 204 transmits electromagnetic energy in the new frequency.

[0031] 以上所述,仅是本发明的较佳实施例而已,并非对本发明作任何形式上的限制,虽然本发明已以较佳实施例揭露如上,然而并非用以限定本发明,任何熟悉本专业的技术人员,在不脱离本发明技术方案范围内,当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例,但凡是未脱离本发明技术方案的内容,依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均仍属于本发明技术方案的范围内。 [0031] The above are only preferred embodiments of the present invention only, not limitation of the present invention in any form, although the invention has been disclosed above by the preferred embodiments, but not intended to limit the present invention, anyone familiar with Those skilled in the art, without departing from the scope of the technical solution of the present invention, when the techniques disclosed above can be utilized with some minor modifications to the content as equivalent variations or modifications equivalent embodiments, but all without departing from the technical solutions of the present invention, any simple modifications based on the technical essence of the present invention is made to the above embodiment of the embodiment, the equivalent changes and modifications, provided they fall within the scope of the present invention.

Claims (9)

1. 一种具锁相电路的数字板,其特征在于其包含一发送电路,用于产生一电磁波信号; 一应用电路,用于控制该发送电路产生该电磁波信号; 一天线感应板,用于接收该电磁波能量,并将该电磁波能量发射出,让一电磁笔接收;以及一接收电路,用于接收该电磁笔所共振出的一共振信号,并将该共振信号传输至该应用电路; 其中该锁相电路用于调整频率,进而控制该发送电路传送具有新频率的该电磁波信号。 A lock plate having a digital circuit, characterized in that it comprises a transmission circuit for generating an electromagnetic signal; an application circuit, the transmission circuit for generating the electromagnetic control signal; antenna tablet, for receiving the electromagnetic wave energy, and the emitted electromagnetic wave energy, so that a receiving electromagnetic pen; and a receiving circuit for receiving the electromagnetic resonance pen out a resonance signal, and the signal is transmitted to the resonant circuit is applied; wherein the phase lock circuit for adjusting the frequency, and thus controls the transmitting circuit of the electromagnetic wave signal having a new frequency.
2.如权利要求I所述的数字板,其特征在于上述的该应用电路比较该电磁波信号与该共振信号的频率。 Digital plate I according to claim 2, wherein said application circuit for comparing the frequency of the electromagnetic signal and the resonance signal.
3.如权利要求2所述的数字板,其特征在于若该电磁波信号的频率不同于该共振信号,该锁相电路调整该电磁波信号的频率,让该发送信号传送新频率的该电磁波信号。 The digital board according to claim 2, characterized in that if the frequency of the electromagnetic wave signal is different from the resonance signal, the phase lock circuit adjusts the frequency of the electromagnetic wave signal, an electromagnetic wave signal so that the transmission signal is transmitted to the new frequency.
4.如权利要求3所述的数字板,其特征在于上述的让电磁笔可以一直接收到最强的该电磁波信号的能量,进而降低辨识的误差。 The digital board according to claim 3, characterized in that the pen so that the electromagnetic wave receiving the strongest signal above a direct energy, thereby reducing the error identification.
5.如权利要求I所述的数字板,其特征在于上述的数字板为一电磁式数字板。 5. The digital board according to claim I, wherein said plate is a digital electromagnetic digitizer.
6.如权利要求I所述的数字板,其特征在于上述的数字板为一被动式电磁式数字板。 I according to the digital board as claimed in claim, characterized in that said number plate is a passive electromagnetic digitizer.
7. 一种具锁相电路的数字板,其特征在于其包含一发送电路,用于产生一电磁波信号; 一应用电路,电性连接该发送电路,且用于控制该发送电路产生该电磁波信号; 一天线感应板,电性连接该发送电路以接收该电磁波能量,并将该电磁波能量发射出,让一电磁笔接收;以及一接收电路,电性连接该天线感应板与该应用电路,用于接收该电磁笔所共振出的一共振信号,并将该共振信号传输至该应用电路; 其中该应用电路比较该电磁波信号与该共振信号的频率,若该电磁波信号的频率不同于该共振信号,该锁相电路调整该电磁波信号的频率,让该发送电路传送新频率的该电磁波信号。 A lock plate having a digital circuit, characterized in that it comprises a transmission circuit for generating an electromagnetic signal; an application of the transmission circuit circuit electrically connected, and the transmission circuit for generating the electromagnetic control signal ; tablet antenna, electrically connected to the transmission circuit to receive the electromagnetic wave energy, and the emitted electromagnetic wave energy, so that a receiving electromagnetic pen; and a receiving circuit electrically connected to the sensing plate and the antenna circuit application, with the electromagnetic pen to receiving a resonance signal out of the resonance, and the resonance signal is transmitted to the application circuit; wherein the signal application circuit compares the frequency of the electromagnetic wave of the resonance signal, which resonance signal when the frequency of the electromagnetic wave signal is different from the electromagnetic wave signal of the phase lock circuit adjusts the frequency of the electromagnetic wave signal, so that the new frequency of the transmitting circuit.
8.如权利要求7所述的数字板,其特征在于上述的数字板为一电磁式数字板。 8. The digital plate according to claim 7, wherein said plate is a digital electromagnetic digitizer.
9.如权利要求7所述的数字板,其特征在于上述的数字板为一被动式电磁式数字板。 9. The digital board according to claim 7, characterized in that said number plate is a passive electromagnetic digitizer.
CN2011101382739A 2011-05-23 2011-05-23 Digitizer with phase lock loop CN102799335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011101382739A CN102799335A (en) 2011-05-23 2011-05-23 Digitizer with phase lock loop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011101382739A CN102799335A (en) 2011-05-23 2011-05-23 Digitizer with phase lock loop

Publications (1)

Publication Number Publication Date
CN102799335A true CN102799335A (en) 2012-11-28

Family

ID=47198453

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011101382739A CN102799335A (en) 2011-05-23 2011-05-23 Digitizer with phase lock loop

Country Status (1)

Country Link
CN (1) CN102799335A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104636010A (en) * 2013-11-08 2015-05-20 禾瑞亚科技股份有限公司 Transmitter and transmitting method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004021328A2 (en) * 2002-08-29 2004-03-11 N-Trig Ltd. Transparent digitiser
CN101539816A (en) * 2009-04-16 2009-09-23 台均科技(深圳)有限公司 Electromagnetic pen, electromagnetic signal transmitting method, processing method, device and equipment
CN201365144Y (en) * 2009-03-02 2009-12-16 李植扬 Inductive power supplying device
CN101901046A (en) * 2009-05-25 2010-12-01 太瀚科技股份有限公司 Input device with adjustment structure and wireless pen thereof
CN101957706A (en) * 2010-09-30 2011-01-26 汉王科技股份有限公司 Electromagnetic handwritten device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004021328A2 (en) * 2002-08-29 2004-03-11 N-Trig Ltd. Transparent digitiser
CN201365144Y (en) * 2009-03-02 2009-12-16 李植扬 Inductive power supplying device
CN101539816A (en) * 2009-04-16 2009-09-23 台均科技(深圳)有限公司 Electromagnetic pen, electromagnetic signal transmitting method, processing method, device and equipment
CN101901046A (en) * 2009-05-25 2010-12-01 太瀚科技股份有限公司 Input device with adjustment structure and wireless pen thereof
CN101957706A (en) * 2010-09-30 2011-01-26 汉王科技股份有限公司 Electromagnetic handwritten device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104636010A (en) * 2013-11-08 2015-05-20 禾瑞亚科技股份有限公司 Transmitter and transmitting method thereof
CN104636010B (en) * 2013-11-08 2018-07-10 禾瑞亚科技股份有限公司 Sender signaling method thereto

Similar Documents

Publication Publication Date Title
US20080231120A1 (en) Noncontact power transmission system and power transmitting device
CN101834473B (en) Resonant tracking non-contact power supply device and power supply method
US20110081857A1 (en) Wireless power transmission/reception apparatus and method having communication function
Zhang et al. Frequency decrease analysis of resonant wireless power transfer
US8660500B2 (en) Method and system for a voltage-controlled oscillator with a leaky wave antenna
KR20140101839A (en) Contactless power supply system, power supply device, and method for controlling contactless power supply system
EP2936652A1 (en) Wireless charging optimization
KR20120030985A (en) Method and device for active load modulation by inductive coupling
CN102378332B (en) Wireless power transmission apparatus and transmission method thereof
CN102341994A (en) Non-contact power supplying device and non-contact power supplying method
JP4935188B2 (en) Microwave utilization device
CN102005827A (en) Non-contact electric power feeding apparatus, non-contact electric power receiving apparatus, non-contact electric power feeding method, non-contact electric power receiving method and non-contact electric power feeding system
CN103124099A (en) Wireless charging system and apparatus, and control method thereof
JP5238884B2 (en) Wireless power transmission apparatus
KR20110110525A (en) Wireless power transmission apparatus and wireless power transmission mehod
CN102882545A (en) Communication equipment
JP2007500461A (en) Communication device for establishing a data connection between intelligent devices
CN102299548A (en) Electronic device and method, and a wireless power supply system
TW201011600A (en) Electromagnetic stylus for operating a capacitive touch panel
CN202997711U (en) Wireless power supply local computing system
JP2008236917A (en) Non-contact power transmission apparatus
US8908671B2 (en) Semiconductor device, portable communication terminal, IC card, and microcomputer
CN101685366A (en) Electromagnetic induction device with multi-touch function
JP2012510095A (en) Rfsim cards, rf card reader, and a magnetic induction controlling method in rf communication
RU2015118173A (en) Wireless inductive power transfer

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
C05 Deemed withdrawal (patent law before 1993)