TWI276303B - The touch sensing apparatus - Google Patents

The touch sensing apparatus Download PDF

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TWI276303B
TWI276303B TW94127478A TW94127478A TWI276303B TW I276303 B TWI276303 B TW I276303B TW 94127478 A TW94127478 A TW 94127478A TW 94127478 A TW94127478 A TW 94127478A TW I276303 B TWI276303 B TW I276303B
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Taiwan
Prior art keywords
detector
negative
sensor
touch sensing
signal source
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TW94127478A
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Chinese (zh)
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TW200707906A (en
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Shin-Hong Chung
Kuan-Hong Hsieh
Shi-Quan Lin
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Hon Hai Prec Ind Co Ltd
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Abstract

This invention provides a touch sensing apparatus, comprising a differential signal source, two conductors, a sensor, a rectifier, a detector. The differential signal source is used for generating two same frequency and reverse polarity signal. The two conductors are respectively connected to the anode and cathode of the differential signal source. The sensor is for receiving the noise of the user, the sensor is located between the two conductors and respectively constitutes two capacitance with the two conductors. The noise of the environment could counteract by the two capacitances. The rectifier circuit is for rectifying the alternate current from the signal resource into a negative direct current resource with the noise generated synchronously. The negative direct current is used for negative resource of the detector. The detector is connected with the sensor and is for receiving the noise transmitted from the sensor. The apparatus could improve the sensitivity of sensing the noise of the body and the simple of the circuit could degrade the cost.

Description

1276303 九、發明說明: 【發明所屬之技術領域】 ’特別係關於一種通過觸摸感應人 本發明係關於一種觸摸式感應裝置 體雜訊之感應裝置。 【先前技術】 …現在已有各種類型之感應裝置,且已應餘電齡統和其他應用中, =裝置中人們最為熟悉之-種U腦之“鼠標器”。儘管鼠標器作為位 幻曰示設備極其普遍,惟其具有機械部件,並且要求有,平面,使得位1276303 IX. Description of the invention: [Technical field to which the invention pertains] ‘Specially related to a touch sensing person The present invention relates to a sensing device for a touch sensing device body noise. [Prior Art] ... There are various types of sensing devices, and it has been used in the remaining age and other applications, = the "mouse" of the U-brain that is most familiar to the device. Although the mouse is extremely popular as a phantom display device, it has mechanical parts and is required to have a flat surface.

^球能在其上滾動,並且’為了有合理之分辨率,鼠標器通常需要滾動較 長之距離’最後鼠標㈣要用戶抬起手以使得光標移動,從而干擾了人們 從電腦上鍵入之主要目的。 人們經過錢嘗試,提供—雜置,赌_作指示設備之拇指 =他手指之位置,以代替鼠標器,這種設備之理想雜是低功耗、高分 〜低成本。現在已有多種類型之顧式感應裝置,如電阻式、電感式 如美國專利局2003年3月18日公告之專利號為653497〇之專利,其 _Γ7Γ種糊電感技術之旋轉式位置檢測技術,該技術包括兩部分,第 刀通過空間上圍繞旋轉軸之旋轉運動產生變化之磁場,第二部分包括 用來感應第—部分所產生之磁場,並產生相應之訊號,上述訊 Λ著第-部分與第二部分之相對角度之變化而變化,則根據變化之訊號 I7可測出第一部分與第二部分之相對位置。 八如美國專利局2〇〇3年4月8日公告之專利號為说划4之專利。其揭 =了%種電阻感應裝置’該裝置包括一振蕩電路單元及_電子_單元, 路單元為電子_單元提供-高醉減,如果個II偵測到人 味手指之接觸,電子節點單元之阻抗將隨之變化,當手指接觸電子節點 、、則產生之電阻與電子節電之輸人端之電阻相匹配,反射波變小,通過檢 剛反射波並將其與-鑑別器單元比較若反射度變小即可確定人義摸。 i再如美國專利局1996年2月27日公告之專利號為5495〇77之專利, 一揭不了一種電容位置感應器,該感應器在與感應焊盤相連之垂直及水平 1276303 方向上之導線上具有-特性電容。該電容將隨著人體之接觸之 體相對於感應矩陣之運動而發生變化,矩陣巾χ&γ方向之 點 容之變化被讎為X及γ方向上之電壓,這些龍經 ^後 代表人體巾雜置之電子訊號。 傻產生 上述專利技術賴在性能上有了改進,如響應速度快, 作簡單,但是構及触較複雜,生產穌雜高,且其耗電較大,' 手才曰感應之準確度不雨易產生誤操作。 【發明内容】^The ball can scroll on it, and 'in order to have a reasonable resolution, the mouse usually needs to scroll a long distance'. Finally, the mouse (4) asks the user to raise his hand to move the cursor, thus disturbing the main purpose of typing from the computer. . People try to provide - miscellaneous, gambling _ as the thumb of the pointing device = the position of his finger instead of the mouse. The ideal hybrid of this device is low power consumption, high score ~ low cost. There are many types of sensor-type sensing devices, such as resistive and inductive, such as the patent number 653497〇 published by the US Patent Office on March 18, 2003, and the rotary position detection technology of the 糊7Γ paste inductor technology. The technique comprises two parts, the first knife generates a changing magnetic field by a spatially rotating motion about the rotating shaft, and the second part comprises a magnetic field generated by the first part, and generates a corresponding signal, the above-mentioned signal- When the relative angle of the part and the second part changes, the relative position of the first part and the second part can be measured according to the changed signal I7. Eight patents issued by the US Patent Office on April 8, 2, 3, are patents. It discloses that % of the resistance sensing device 'the device includes an oscillating circuit unit and an _ electronic _ unit, and the circuit unit provides the electronic _ unit with a high drunk reduction. If the II detects the contact of the human finger, the electronic node unit The impedance will change accordingly. When the finger touches the electronic node, the resistance generated matches the resistance of the input end of the electronic power saving, and the reflected wave becomes smaller. By detecting the reflected wave and comparing it with the discriminator unit, The degree of reflection becomes smaller and the human sense is determined. Further, as disclosed in the Patent No. 5,495,77 issued by the U.S. Patent Office on February 27, 1996, a capacitive position sensor is disclosed, which is guided in the vertical and horizontal directions of 1273303 connected to the sensing pad. The line has a - characteristic capacitor. The capacitance will change with the movement of the human body in contact with the sensing matrix, and the change in the point capacitance of the matrix frame & γ direction is reduced to the voltage in the X and γ directions, and these dragons represent the human body towel. Miscellaneous electronic signal. Stupid generation of the above patented technology has improved performance, such as fast response, simple, but the structure and touch are more complex, the production is high, and its power consumption is large, the accuracy of the hand-carrying induction is not rainy. Misleading. [Summary of the Invention]

基於上述喊,本發社目的在於提供_種麵絲縣置,該感應 裝置可通過觸摸感應人體之雜訊,從而實現預期之功能。 本發明之目的是通過以下方案實現的,提供—種麵式感應裝置。該 裝置包括:-差分訊號源、兩個導電體、—感應器、一彳貞測器及一整流電 路,。該差分訊號源,用於產生兩個辭相同,她相反之交流訊號;該兩 個V電體’分別與該差分訊號源之正極與負極相連;該感應器,用於接收 人體,觸時產生之雜訊,該感應驗於該兩個導電體之間,並與其構成兩 個電谷’周圍環境之雜訊可通過該兩個電容相互抵消;該整流電路,其一 端與該差分峨源之貞極相連H與該制器之貞電源輸人端相連, 可將從該差分峨源貞極輸出之交流訊雜流為—負錢魏,該雜訊作 用於人體可增強人體之雜訊,提高感狀靈敏度;該侧旨,與該感應器 相連,用於接收人體觸摸該感應器時產生之雜訊。 【實施方式】 请參閱第一圖,係為觸摸式感應裝置之實施例之電路圖。該觸摸式感 應裝置包括-差分錢源u、兩個導紐12、—感應器13、—直流電源 14、一整流電路15、一偵測器16、一終端電路17以及一第一電阻仏。該 差分仏號源11之正負兩極分別與該兩個導電體12其中之一連接;該感應 器13位於該兩個導電體12之間,與該兩個導電體12構成兩個電容,同時 與該偵繼16連接;該錢魏^無侧旨16之正冑雜人端A連接; 該整流電路15—端與該差分訊號源n之負極連接,一端與該偵測器15之 負電源輸入端B連接,·終端電路17連接於摘測器16之輸出端,該第一電 1276303 阻18連接於偵測器16之正負兩個輸入端。 ^ 該差分訊號源11 產生兩個鮮鱗,她相反之交流訊號,在該 一 麵式感絲置所處的環境巾,都會有雜訊的影響,這錄訊可由-些帶 電體產生,如燈官、電腦等。這些雜訊為一些具有不規則波形之訊號,當 這些雜訊作用於上述由該差分訊號源u與該兩個導電體構成之電容時,由 於該兩個導㈣12分職該差分訊魏u之正極與貞極減,則經由該 兩個電容之_之正钱可被縣分錢㈣之貞鋪生找號抵消,而 經由該兩㈣容之雜歡貞半波可被該差分減源u之正極產生之訊號抵 (彡肖,如此可減少顯魏雜爾電路之影響,當人财指麵域應器13 • 時,則人體之雜訊通過手指傳輸至該感應器I3,該感應器I3將JL傳輸至伯 測器I6,該侧H 16將接收到之訊號放大之後傳輸至終端電路17,該終 端電路17對該雑訊做相應處理以達到預期實現之功能,該_器16為高 阻抗輸入電路,可絲錄翻之訊舰達時亦可被檢綱,該細器Μ 可為高阻抗放大器;整流電路15將從該差分訊號源u之負極輸出之訊號 整流為-負直流電源,該負直流電源可做為該侧器16之負電源,一般情 況下’侧雜較電源輸人,可崎大電壓之動態輸域圍,該雙電源 的供應也採用直流電輸入,該整流電路15產生之負直流電源相對於差分信、 號源11來說即為-雜訊,該雜訊可增加周圍環境的雜訊,晴作用於人體二 亦提高了人體之雜訊,如此在人體觸摸該感應裝置時,其流經感應器13之 籲雜訊亦增強,即可提高感應之靈敏度。該直流電源I4為該侧器二6提供 正直流電源的同時,為該細器16提供一偏壓輸入,第二電阻則及第二 電阻R2為直流電源14提供偏麼電阻;該第一電阻18為一交流電阻,、雨; 該電阻容騎人彡成鹏,以便於_器16將接㈣之職 = 輸至終端電路17。 傻1寻 身本發明雖以較佳實施例揭露如上,然其並非用以限定本發明。任和竦 悉此項技藝者,在不脫離本發明之精神和範圍内,當可做更^與潤飾可見、 此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 因 【圖式簡單說明】 第一圖係為觸摸式感應裝置之實施例之電路圖。 1276303 【主要元件符號說明】Based on the above-mentioned shouting, the purpose of the present invention is to provide a kind of noodle county, which can sense the noise of the human body by touch, thereby realizing the desired function. The object of the present invention is to provide a surface sensing device by the following scheme. The device comprises: a differential signal source, two electrical conductors, an inductor, a detector and a rectifying circuit. The differential signal source is used to generate two identical words, the opposite of which is the alternating current signal; the two V-electric bodies are respectively connected to the positive and negative poles of the differential signal source; the sensor is used for receiving the human body, and is generated by time. The noise, the sensing between the two electrical conductors, and the noise of the surrounding environment of the two electric valleys can be canceled by the two capacitors; the rectifier circuit has one end and the differential source The bungee connection H is connected to the power supply input end of the controller, and the AC traffic stream outputted from the differential source drain is - negative money Wei, and the noise acts on the human body to enhance the human body noise. The sensitivity of the sensor is improved; the purpose is to connect to the sensor for receiving noise generated when the human body touches the sensor. [Embodiment] Please refer to the first figure, which is a circuit diagram of an embodiment of a touch sensing device. The touch sensing device includes a differential source u, two guides 12, an inductor 13, a DC power source 14, a rectifier circuit 15, a detector 16, a terminal circuit 17, and a first resistor. The positive and negative poles of the differential source source 11 are respectively connected to one of the two conductors 12; the inductor 13 is located between the two conductors 12, and the two conductors 12 form two capacitors, and The detector is connected to the 16th connection; the money is not connected to the 16th side of the hybrid terminal A; the rectifier circuit 15-terminal is connected to the negative terminal of the differential signal source n, and the negative power input of one end of the detector 15 The terminal B is connected, and the terminal circuit 17 is connected to the output end of the detector 16, and the first electric 12763603 resistor 18 is connected to the positive and negative terminals of the detector 16. ^ The differential signal source 11 produces two fresh scales. The opposite of the alternating signal, the environmental towel placed on the side of the silk is affected by noise. This recording can be generated by some charged bodies, such as Light officer, computer, etc. The noise is a signal having an irregular waveform. When the noise is applied to the capacitor formed by the differential signal source u and the two conductors, the two guides (four) 12 are divided into two parts. If the positive electrode and the sputum are reduced, the positive energy of the two capacitors can be offset by the county (4), and the half wave can be subtracted by the difference. The signal generated by the positive pole is offset (this can reduce the influence of the Wei Weier circuit. When the human currency refers to the surface of the circuit, the human body noise is transmitted to the sensor I3 through the finger, the sensor I3 transmits JL to the detector I6, and the side H 16 amplifies the received signal and transmits it to the terminal circuit 17, and the terminal circuit 17 processes the corresponding signal to achieve the function realized. The _16 is The high-impedance input circuit can also be calibrated when the signal is recorded, and the rectifier Μ can be a high-impedance amplifier; the rectifier circuit 15 rectifies the signal output from the negative terminal of the differential signal source u to a negative DC Power supply, the negative DC power supply can be used as the negative power source of the side device 16, In the case of 'the side is more than the power input, the dynamic transmission range of the voltage can be increased, and the supply of the dual power supply also uses the DC input. The negative DC power generated by the rectifier circuit 15 is relative to the differential signal and the source 11 For the noise, the noise can increase the noise of the surrounding environment. The effect of the noise on the human body also increases the noise of the human body. Thus, when the human body touches the sensing device, the noise flowing through the sensor 13 is also enhanced. The sensitivity of the induction can be improved. The DC power supply I4 provides a positive DC power supply for the side device 2, and provides a bias input for the thin device 16, and the second resistor and the second resistor R2 provide the DC power supply 14. The first resistor 18 is an alternating current resistor, and the rain resistor; the resistor is accommodated by a rider, so that the _16 can be connected to the terminal circuit 17. The silly 1 seeks the invention. The above description of the preferred embodiments is not intended to limit the invention, and it is intended that the present invention can be made and modified without departing from the spirit and scope of the invention. The scope of protection is attached to the scope of patent application The definition is based on the following. [First description of the drawings] The first figure is a circuit diagram of an embodiment of a touch sensing device. 1276303 [Description of main component symbols]

差分訊號源 11 導電體 12 感應器 13 直流電源 14 整流電路 15 偵測器 16 終端電路 17 第一電阻 18 第二電阻 R1 第三電阻 R2Differential signal source 11 Conductor 12 Sensor 13 DC power supply 14 Rectifier circuit 15 Detector 16 Terminal circuit 17 First resistor 18 Second resistor R1 Third resistor R2

99

Claims (1)

1276303 十、申請專利範圍: 1·一種觸摸式感應裝置,其特徵在於,該裝置包括·· 一差分訊號源,產生兩個頻率相同,相位相反之交流訊號; 兩個導電體,分別與該差分訊號源之正極與負極相連; ~感應器’用於接收人體接觸時產生之雜訊,其位於該兩個導電體之 間’並與該兩個導電體構成兩個電容; 一偵測器; 一整流電路,其一端與該差分訊號源之負極相連,另一端與該偵測器 之負電源輸入端相連,可將從該差分訊號源負極輸出之交流訊號整 流為一負直流電源; 該偵測器,與該感應器相連,用於接收由該感應器傳輸之雜訊。 2·如申請專利範圍第1項所述之觸摸式感應裝置,其中,還包括有一直流 電源其與該偵測器之正輸入端相連,為該偵測器提供正直流電源及偏 壓輸入。 如申叫專利範圍第2項所述之觸摸式感應裝置,其中,該備測器的正輸 入端與負輸入端連接一交流電阻。 4·如申請專利範圍第3項所述之觸摸式感應裝置,其中,該觸摸式感應裝 置還包括一終端電路,用於處理該偵測器輸出之訊號。 5·如申請專概圍第1項所粒讎減絲置,財,該細ϋ為高阻 抗輸入。 1276303 七、指定代表圖: (一) 本案指定代表圖為:第(一)圖。 (二) 本代表圖之元件符號簡單說明: 差分訊號源 11 導電體 12 感應器 13 直流電源 14 整流電路 15 偵測器 161276303 X. Patent application scope: 1. A touch sensing device, characterized in that the device comprises a differential signal source, generating two alternating signals with the same frequency and opposite phases; two electrical conductors, respectively, and the difference The positive pole of the signal source is connected to the negative pole; the inductor 'is used to receive the noise generated by the human body contact, and is located between the two conductors' and forms two capacitors with the two conductors; a detector; a rectifying circuit having one end connected to the negative terminal of the differential signal source and the other end connected to the negative power input end of the detector, capable of rectifying the alternating current signal output from the negative of the differential signal source into a negative direct current power supply; The detector is connected to the sensor for receiving noise transmitted by the sensor. 2. The touch sensing device of claim 1, further comprising a DC power source coupled to the positive input of the detector to provide a positive DC power source and a bias input for the detector. The touch sensing device of claim 2, wherein the positive input terminal and the negative input terminal of the standby device are connected to an alternating current resistor. 4. The touch sensing device of claim 3, wherein the touch sensing device further comprises a terminal circuit for processing the signal output by the detector. 5. If you apply for the first item of the first item, the grain is reduced, and the fine is the high impedance input. 1276303 VII. Designated representative map: (1) The representative representative of the case is: (1). (2) A brief description of the component symbols of this representative diagram: Differential signal source 11 Conductor 12 Sensor 13 DC power supply 14 Rectifier circuit 15 Detector 16 終端電路 17 第一電阻 18 第二電阻 R1 第三電阻 R2 八、本案若有化學式時,請揭示最能顯示發明特徵的化學 式:Terminal circuit 17 First resistor 18 Second resistor R1 Third resistor R2 VIII. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention:
TW94127478A 2005-08-12 2005-08-12 The touch sensing apparatus TWI276303B (en)

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