KR960035233A - Position detecting apparatus and method by phase difference in capacitive touch panel - Google Patents
Position detecting apparatus and method by phase difference in capacitive touch panel Download PDFInfo
- Publication number
- KR960035233A KR960035233A KR1019950006339A KR19950006339A KR960035233A KR 960035233 A KR960035233 A KR 960035233A KR 1019950006339 A KR1019950006339 A KR 1019950006339A KR 19950006339 A KR19950006339 A KR 19950006339A KR 960035233 A KR960035233 A KR 960035233A
- Authority
- KR
- South Korea
- Prior art keywords
- touch panel
- signal
- phase difference
- terminal
- output
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title description 2
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims 2
- 230000010355 oscillation Effects 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Position Input By Displaying (AREA)
- Electronic Switches (AREA)
Abstract
용량성 터치 패널(10)과; 상기한 터치 패널에 정현파 신호를 인가한 뒤에, 터치 패널로부터 출력되는 정현파 신호의 위상차를 펄스신호로 출력하는 위상차 검출부(20)와; 상기한 위상차 검출부로부터 입력되는 펄스신호를 카운팅한 뒤에 이를 데이터 신호로 변환하여 출력하는 위상 카운터(30)와; 상기한 위상 카운터로부터 입력되는 데이터 신호로부터 인체가 터치패널에 접촉된 위치를 산출하여 이에 관한 정보신호를 출력하는 마이크로 프로세서부(40)와; 상기한 마이크로 프로세서부로부터 입력되는 정보신호를 RS232통신을 이용하여 외부의 컴퓨터 시스템으로 출력하는 통신부(50)로 구성되어 있으며; 디지틀 기술을 이용하여 위치 검출회로를 구성함으로써 구현하기가 쉽고 저렴하며, 노이즈를 감소시킴과 동시에 해상도와 위치 검출속도를 향상시킬 수 있는 효과를 가진 용량방식 터치패널에서의 위상차에 의한 위치 검출장치에 관한 것.A capacitive touch panel 10; A phase difference detector 20 for applying a sine wave signal to the touch panel and outputting a phase difference of the sine wave signal output from the touch panel as a pulse signal; A phase counter 30 which counts the pulse signal input from the phase difference detector and converts the pulse signal into a data signal and outputs the data signal; A microprocessor unit 40 for calculating a position where the human body contacts the touch panel from the data signal input from the phase counter and outputting an information signal related thereto; A communication unit 50 for outputting the information signal input from the microprocessor unit to an external computer system using RS232 communication; It is easy and cheap to implement the position detection circuit using digital technology, and it is possible to reduce the noise and improve the resolution and the position detection speed. About.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 이 발명의 제1실시예에 따른 용량방식 터치패널에서의 위상차에 의한 위치 검출장치의 전체구성 블럭도이고, 제2도는 이 발명의 제1실시예에 따른 용량방식 터치패널에서의 위상차에 의한 위치 검출장치의 위상차 검출부의 상세 회로도이고, 제3도는 이 발명의 제1실시예에 따른 용량방식 터치패널에서의 위상차에 의한 위치 검출장치의 위상 카운터의 상세 회로도이고, 제12도는 이 발명의 실시예에 따른 용량방식 터치패널에서의 위상차에 의한 위치 검출방법의 동작 흐름도이다.FIG. 1 is a block diagram of an overall configuration of a position detection apparatus based on a phase difference in a capacitive touch panel according to a first embodiment of the present invention, and FIG. 2 is a phase difference in a capacitive touch panel according to a first embodiment of the present invention. Fig. 3 is a detailed circuit diagram of the phase counter of the position detection device according to the phase difference in the capacitive touch panel according to the first embodiment of the present invention. 1 is a flowchart illustrating a method of detecting a position due to a phase difference in a capacitive touch panel according to an embodiment of the present invention.
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950006339A KR100318883B1 (en) | 1995-03-24 | 1995-03-24 | Device and method for detecting position by phase difference in capacitive touch panel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950006339A KR100318883B1 (en) | 1995-03-24 | 1995-03-24 | Device and method for detecting position by phase difference in capacitive touch panel |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960035233A true KR960035233A (en) | 1996-10-24 |
KR100318883B1 KR100318883B1 (en) | 2002-04-22 |
Family
ID=66553116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950006339A Expired - Fee Related KR100318883B1 (en) | 1995-03-24 | 1995-03-24 | Device and method for detecting position by phase difference in capacitive touch panel |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100318883B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100532094B1 (en) * | 1999-01-30 | 2005-11-29 | 삼성전자주식회사 | Noise decreasing apparatus and method of touch panel |
WO2008082184A1 (en) * | 2006-12-29 | 2008-07-10 | Chemtronics Co., Ltd. | Apparatus and method for sensing continual touch |
KR101399001B1 (en) * | 2013-03-14 | 2014-05-27 | 화인칩스 주식회사 | Calculation method of touch point coordinates of pointing device having circular type touch pads and calculation method of displacement of pointing device |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006323261A (en) | 2005-05-20 | 2006-11-30 | Mitsubishi Electric Corp | Method for driving display device |
KR100601151B1 (en) | 2006-03-08 | 2006-07-19 | (주) 넥스트칩 | Touch sensing device using capacitance distribution and method thereof |
KR101015785B1 (en) * | 2008-07-31 | 2011-02-21 | (주)코아리버 | Touch sensor and detection method |
KR101119209B1 (en) * | 2010-02-19 | 2012-03-20 | 쓰리에이로직스(주) | Capacitive touch sensor and apparatuses having the same |
CN102902393B (en) * | 2011-07-29 | 2015-11-25 | 宸鸿光电科技股份有限公司 | Detection electrode array control circuit, control method and touch detection system thereof |
KR101461929B1 (en) * | 2013-08-29 | 2014-11-14 | 크루셜텍 (주) | Touch detecting apparatus and method using sinusoidal voltage |
-
1995
- 1995-03-24 KR KR1019950006339A patent/KR100318883B1/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100532094B1 (en) * | 1999-01-30 | 2005-11-29 | 삼성전자주식회사 | Noise decreasing apparatus and method of touch panel |
WO2008082184A1 (en) * | 2006-12-29 | 2008-07-10 | Chemtronics Co., Ltd. | Apparatus and method for sensing continual touch |
KR101399001B1 (en) * | 2013-03-14 | 2014-05-27 | 화인칩스 주식회사 | Calculation method of touch point coordinates of pointing device having circular type touch pads and calculation method of displacement of pointing device |
Also Published As
Publication number | Publication date |
---|---|
KR100318883B1 (en) | 2002-04-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI489357B (en) | Capacitive touch sensing using an internal capacitor of an analog-to-digital converter (adc) and a voltage reference | |
US20110068810A1 (en) | Sensing method and driving circuit of capacitive touch screen | |
EP3798645B1 (en) | Capacitance measurement circuit and touch detection apparatus | |
CA2091349A1 (en) | Frequency counter and method of counting frequency of a signal to minimize effects of duty cycle modulation | |
CN109696186B (en) | Readout circuit for resistive and capacitive sensors | |
US20100065341A1 (en) | Driving scanned channel and non-scanned channels of a touch sensor with same amplitude and same phase | |
KR960035233A (en) | Position detecting apparatus and method by phase difference in capacitive touch panel | |
KR970049358A (en) | Apparatus and method for removing offset signal from electrostatic digitizing tablet | |
SE7907237L (en) | phase detection circuit | |
US9081456B2 (en) | Touch panel control system, capacitance detection apparatus and method thereof | |
KR970008858A (en) | Matched filter circuit | |
KR101354782B1 (en) | Detecting appartus for gyro sensor signal and method thereof | |
JP3243407B2 (en) | Capacitive displacement detector | |
KR0152093B1 (en) | Sinusoidal wave generating apparatus using the up/down counter | |
JP2005233626A (en) | Wheel speed detecting apparatus | |
GB2102226A (en) | Analog to digital converter | |
CN217505945U (en) | Multifunctional acquisition device | |
JPH0721418B2 (en) | Displacement measuring circuit | |
RU2171995C1 (en) | Device for measurement of accelerations | |
RU2099784C1 (en) | Power function generator | |
JP2511471B2 (en) | Capacitance measurement circuit | |
KR100275684B1 (en) | Digital filter | |
JPH0968472A (en) | Pressure sensor | |
KR960030597A (en) | Pulse width measurement method and apparatus | |
RU2214039C2 (en) | Facility modeling signals of complex form based on kajdan function |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19950324 |
|
PG1501 | Laying open of application | ||
A201 | Request for examination | ||
PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 19991007 Comment text: Request for Examination of Application Patent event code: PA02011R01I Patent event date: 19950324 Comment text: Patent Application |
|
E701 | Decision to grant or registration of patent right | ||
PE0701 | Decision of registration |
Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 20011128 |
|
GRNT | Written decision to grant | ||
PR0701 | Registration of establishment |
Comment text: Registration of Establishment Patent event date: 20011213 Patent event code: PR07011E01D |
|
PR1002 | Payment of registration fee |
Payment date: 20011214 End annual number: 3 Start annual number: 1 |
|
PG1601 | Publication of registration | ||
PR1001 | Payment of annual fee |
Payment date: 20040331 Start annual number: 4 End annual number: 4 |
|
PR1001 | Payment of annual fee |
Payment date: 20050321 Start annual number: 5 End annual number: 5 |
|
PR1001 | Payment of annual fee |
Payment date: 20060330 Start annual number: 6 End annual number: 6 |
|
PR1001 | Payment of annual fee |
Payment date: 20071002 Start annual number: 7 End annual number: 7 |
|
PR1001 | Payment of annual fee |
Payment date: 20081029 Start annual number: 8 End annual number: 8 |
|
PR1001 | Payment of annual fee |
Payment date: 20090611 Start annual number: 9 End annual number: 9 |
|
PR1001 | Payment of annual fee |
Payment date: 20100929 Start annual number: 10 End annual number: 10 |
|
FPAY | Annual fee payment |
Payment date: 20111007 Year of fee payment: 11 |
|
PR1001 | Payment of annual fee |
Payment date: 20111007 Start annual number: 11 End annual number: 11 |
|
LAPS | Lapse due to unpaid annual fee | ||
PC1903 | Unpaid annual fee |
Termination category: Default of registration fee Termination date: 20131109 |