KR20080008554A - 시분할 복수 주파수를 이용하는 정전용량 검출방법 및검출장치 - Google Patents
시분할 복수 주파수를 이용하는 정전용량 검출방법 및검출장치 Download PDFInfo
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- KR20080008554A KR20080008554A KR1020060067965A KR20060067965A KR20080008554A KR 20080008554 A KR20080008554 A KR 20080008554A KR 1020060067965 A KR1020060067965 A KR 1020060067965A KR 20060067965 A KR20060067965 A KR 20060067965A KR 20080008554 A KR20080008554 A KR 20080008554A
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- frequency
- capacitance
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- oscillation
- oscillator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
- Manipulation Of Pulses (AREA)
Abstract
Description
Claims (5)
- 정전용량 검출판을 통해서 감지되는 정전용량에 따라 발진기에서 시분할된 복수의 주파수가 발진되도록 하고, 소정 시간 동안 상기 시분할된 복수의 발진 주파수를 카운트함으로써 노이즈에 의한 발진 주파수의 느림과 빠름이 서로 상쇄되어 전체 카운트 시간 동안의 카운트 값이 일정하도록 하는 것을 특징으로 하는 정전용량 감지방법.
- 정전용량 변화를 감지하는 정전용량 검출판;상기 정전용량 검출판의 정전용량에 따라 시분할된 복수의 발진 주파수를 출력하는 발진기;상기 발진기의 시분할 복수 주파수를 소정 시간 동안 카운트하는 주파수 카운터; 및상기 주파수 카운터의 카운트 값과 소정의 기준 카운트값의 차이인 주파수 변화를 연산하고 상기 주파수 변화가 소정의 감지레벨보다 클 경우에 감지신호를 출력하는 비교연산수단;을 구비하는 것을 특징으로 하는 정전용량 감지장치.
- 제1항에 있어서, 상기 시분할된 복수의 주파수 fo1, fo2, , ..., fo(n-1), fo(n)이 fo1<fo2<, ..., <fo(n-1)<fo(n)이고, fo1의 발생기간을 tp1, fo2의 발생기간을 tp2, …, fo(n)의 발생기간을 tp(n)라고 할 때, tp1>tp2>, …, tp(n- 1)>tp(n) 이 되도록 상기 발진기가 발진하는 것을 특징으로 하는 정전용량 감지방법.
- 제3항에 있어서, (fo1*tp1)=(fo2*tp2)=, …, =(fon*tpn)가 되도록 상기 발진기가 발진하는 것을 특징으로 하는 정전용량 감지방법.
- 제1항에 있어서, 상기 시분할된 복수의 발진 주파수는 소정의 발진시간동안 발진하고 일정기간 멈추었다가 다시 발진되는 것을 특징으로 하는 정전용량 감지방법.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020060067965A KR100828128B1 (ko) | 2006-07-20 | 2006-07-20 | 시분할 복수 주파수를 이용하는 정전용량 검출방법 및검출장치 |
US12/309,407 US8058883B2 (en) | 2006-07-20 | 2007-03-14 | Method and apparatus for detecting capacitance using a plurality of time division frequencies |
CN2007800275638A CN101490566B (zh) | 2006-07-20 | 2007-03-14 | 用于通过使用多个时分频率来检测电容的方法和设备 |
EP07715658.6A EP2047286A4 (en) | 2006-07-20 | 2007-03-14 | METHOD AND APPARATUS FOR CAPACITANCE DETECTION UTILIZING A PLURALITY OF TIME-DIVISION FREQUENCIES |
JP2009520668A JP2009544938A (ja) | 2006-07-20 | 2007-03-14 | 時分割複数周波数を用いる静電容量検出方法及び検出装置 |
PCT/KR2007/001262 WO2008010634A1 (en) | 2006-07-20 | 2007-03-14 | Method and apparatus for detecting capacitance using a plurality of time division frequencies |
Applications Claiming Priority (1)
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---|---|---|---|
KR1020060067965A KR100828128B1 (ko) | 2006-07-20 | 2006-07-20 | 시분할 복수 주파수를 이용하는 정전용량 검출방법 및검출장치 |
Publications (2)
Publication Number | Publication Date |
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KR20080008554A true KR20080008554A (ko) | 2008-01-24 |
KR100828128B1 KR100828128B1 (ko) | 2008-05-09 |
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KR1020060067965A KR100828128B1 (ko) | 2006-07-20 | 2006-07-20 | 시분할 복수 주파수를 이용하는 정전용량 검출방법 및검출장치 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8058883B2 (ko) |
EP (1) | EP2047286A4 (ko) |
JP (1) | JP2009544938A (ko) |
KR (1) | KR100828128B1 (ko) |
CN (1) | CN101490566B (ko) |
WO (1) | WO2008010634A1 (ko) |
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KR101031994B1 (ko) * | 2009-03-03 | 2011-05-02 | 주식회사 켐트로닉스 | 복수개의 키에서의 터치 입력을 감지할 수 있는 터치 감지 장치 및 방법 |
KR101066387B1 (ko) * | 2009-06-12 | 2011-09-21 | 주식회사 켐트로닉스 | 진폭 확대를 이용한 터치 감지 장치 및 방법 |
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- 2006-07-20 KR KR1020060067965A patent/KR100828128B1/ko active IP Right Grant
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2007
- 2007-03-14 EP EP07715658.6A patent/EP2047286A4/en not_active Withdrawn
- 2007-03-14 WO PCT/KR2007/001262 patent/WO2008010634A1/en active Application Filing
- 2007-03-14 US US12/309,407 patent/US8058883B2/en active Active
- 2007-03-14 JP JP2009520668A patent/JP2009544938A/ja active Pending
- 2007-03-14 CN CN2007800275638A patent/CN101490566B/zh active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101031994B1 (ko) * | 2009-03-03 | 2011-05-02 | 주식회사 켐트로닉스 | 복수개의 키에서의 터치 입력을 감지할 수 있는 터치 감지 장치 및 방법 |
KR101066387B1 (ko) * | 2009-06-12 | 2011-09-21 | 주식회사 켐트로닉스 | 진폭 확대를 이용한 터치 감지 장치 및 방법 |
Also Published As
Publication number | Publication date |
---|---|
KR100828128B1 (ko) | 2008-05-09 |
JP2009544938A (ja) | 2009-12-17 |
EP2047286A1 (en) | 2009-04-15 |
US8058883B2 (en) | 2011-11-15 |
US20090302871A1 (en) | 2009-12-10 |
EP2047286A4 (en) | 2014-01-22 |
CN101490566A (zh) | 2009-07-22 |
CN101490566B (zh) | 2011-10-12 |
WO2008010634A1 (en) | 2008-01-24 |
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