KR890004769B1 - 주위 광선 및 전자 잡음 감소 회로 - Google Patents

주위 광선 및 전자 잡음 감소 회로 Download PDF

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Publication number
KR890004769B1
KR890004769B1 KR1019840004042A KR840004042A KR890004769B1 KR 890004769 B1 KR890004769 B1 KR 890004769B1 KR 1019840004042 A KR1019840004042 A KR 1019840004042A KR 840004042 A KR840004042 A KR 840004042A KR 890004769 B1 KR890004769 B1 KR 890004769B1
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KR
South Korea
Prior art keywords
circuit
photodetector
hysteresis
output
photodetector 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.)
Expired
Application number
KR1019840004042A
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English (en)
Korean (ko)
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KR850001590A (ko
Inventor
엠. 코마디나 브루스
디. 라자레비크 블라데타
에이취. 바이닝 어거스트
Original Assignee
휴우즈 에어크라프트 캄파니
알.엠.홀
일렉트로 메카니컬 시스템즈 인코포레이티드
블라데타 라자레비크
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.)
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Publication date
Application filed by 휴우즈 에어크라프트 캄파니, 알.엠.홀, 일렉트로 메카니컬 시스템즈 인코포레이티드, 블라데타 라자레비크 filed Critical 휴우즈 에어크라프트 캄파니
Publication of KR850001590A publication Critical patent/KR850001590A/ko
Application granted granted Critical
Publication of KR890004769B1 publication Critical patent/KR890004769B1/ko
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electronic Switches (AREA)
  • Position Input By Displaying (AREA)
  • Optical Communication System (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
  • Length Measuring Devices By Optical Means (AREA)
KR1019840004042A 1983-07-11 1984-07-11 주위 광선 및 전자 잡음 감소 회로 Expired KR890004769B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US512821 1983-07-11
US06/512,821 US4591710A (en) 1983-07-11 1983-07-11 Ambient light and electromagnetic noise reduction circuit

Publications (2)

Publication Number Publication Date
KR850001590A KR850001590A (ko) 1985-03-30
KR890004769B1 true KR890004769B1 (ko) 1989-11-25

Family

ID=24040720

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019840004042A Expired KR890004769B1 (ko) 1983-07-11 1984-07-11 주위 광선 및 전자 잡음 감소 회로

Country Status (11)

Country Link
US (1) US4591710A (enExample)
EP (1) EP0149668B1 (enExample)
JP (1) JPS60501825A (enExample)
KR (1) KR890004769B1 (enExample)
AU (1) AU572536B2 (enExample)
CA (1) CA1220829A (enExample)
DE (1) DE3467944D1 (enExample)
ES (1) ES8603666A1 (enExample)
IL (1) IL72296A (enExample)
IT (1) IT1179391B (enExample)
WO (1) WO1985000682A1 (enExample)

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712003A (en) * 1983-07-27 1987-12-08 Itsuki Ban Blind person guide device
US4710759A (en) * 1984-02-22 1987-12-01 Zenith Electronics Corporation Interactive CRT with touch level set
US4943806A (en) * 1984-06-18 1990-07-24 Carroll Touch Inc. Touch input device having digital ambient light sampling
US4695827A (en) * 1984-11-20 1987-09-22 Hughes Aircraft Company Electromagnetic energy interference seal for light beam touch panels
JPH0337062Y2 (enExample) * 1985-05-17 1991-08-06
EP0243411B1 (en) * 1985-10-29 1992-06-17 HOPPER, William R. Touch sensitive indicating light
US4799044A (en) * 1986-02-18 1989-01-17 Amp Incorporated Phototransistor apparatus with current injection ambient compensation
US4684801A (en) * 1986-02-28 1987-08-04 Carroll Touch Inc. Signal preconditioning for touch entry device
US4893120A (en) * 1986-11-26 1990-01-09 Digital Electronics Corporation Touch panel using modulated light
US4845479A (en) * 1986-12-22 1989-07-04 Xerox Corporation High reliability PWB interconnection for touch input systems
US4818859A (en) * 1987-06-01 1989-04-04 Carroll Touch Inc. Low profile opto-device assembly with specific optoelectronic lead mount
US4855590A (en) * 1987-06-25 1989-08-08 Amp Incorporated Infrared touch input device having ambient compensation
US5164714A (en) * 1988-06-20 1992-11-17 Amp Incorporated Modulated touch entry system and method with synchronous detection
US4988983A (en) * 1988-09-02 1991-01-29 Carroll Touch, Incorporated Touch entry system with ambient compensation and programmable amplification
US5113068A (en) * 1990-12-28 1992-05-12 Square D Company Photoelectrical sensor with multistaged, filtered amplifier circuit
USD347002S (en) 1991-10-07 1994-05-17 Lau Clifford B Touch plate for providing a computer response
US5605406A (en) * 1992-08-24 1997-02-25 Bowen; James H. Computer input devices with light activated switches and light emitter protection
US5378069A (en) * 1992-08-24 1995-01-03 Product Engineering & Mfg., Inc. Environmentally safe touch typing keyboard
US5577848A (en) * 1992-08-24 1996-11-26 Bowen; James H. Light controlled touch pad for cursor and selection control on a computer display
US5508521A (en) * 1994-12-05 1996-04-16 Cardiovascular Diagnostics Inc. Method and apparatus for detecting liquid presence on a reflecting surface using modulated light
US6256157B1 (en) 1998-05-15 2001-07-03 International Business Machines Corporation Method and apparatus for removing noise spikes
US20070084989A1 (en) * 2003-09-22 2007-04-19 Koninklijke Philips Electronics N.V. Light guide touch screen
WO2005081631A2 (en) 2004-02-27 2005-09-09 N-Trig Ltd. Noise reduction in digitizer system
JP4550712B2 (ja) * 2005-10-17 2010-09-22 ルネサスエレクトロニクス株式会社 受光回路
US9092092B2 (en) 2008-08-07 2015-07-28 Rapt Ip Limited Detecting multitouch events in an optical touch-sensitive device using touch event templates
EP2338104B1 (en) 2008-08-07 2018-06-06 Rapt IP Limited Method and apparatus for detecting a multitouch event in an optical touch-sensitive device
JP5345007B2 (ja) * 2009-06-29 2013-11-20 株式会社ワコム 位置検出装置、位置検出回路及び位置検出方法
WO2011072588A1 (zh) * 2009-12-16 2011-06-23 北京汇冠新技术股份有限公司 一种红外触摸屏
US8836672B2 (en) 2011-02-09 2014-09-16 Dornerworks, Ltd. System and method for improving machine vision in the presence of ambient light
CN104094203B (zh) 2011-07-22 2017-02-15 拉普特知识产权公司 用于在光学触敏装置中使用的光学耦合器
US9524060B2 (en) 2012-07-13 2016-12-20 Rapt Ip Limited Low power operation of an optical touch-sensitive device for detecting multitouch events
US10095361B2 (en) 2015-03-18 2018-10-09 Microsoft Technology Licensing, Llc Stylus detection with capacitive based digitizer sensor
US10296146B2 (en) 2015-12-22 2019-05-21 Microsoft Technology Licensing, Llc System and method for detecting grip of a touch enabled device
US10423268B2 (en) 2015-12-22 2019-09-24 Microsoft Technology Licensing, Llc System and method for detecting grounding state of a touch enabled computing device
US9823774B2 (en) 2016-02-23 2017-11-21 Microsoft Technology Licensing, Llc Noise reduction in a digitizer system
US10678348B2 (en) 2018-03-12 2020-06-09 Microsoft Technology Licensing, Llc Touch detection on an ungrounded pen enabled device
US10616349B2 (en) 2018-05-01 2020-04-07 Microsoft Technology Licensing, Llc Hybrid sensor centric recommendation engine
US11536589B2 (en) * 2021-03-09 2022-12-27 Toyota Motor Engineering & Manufacturing North America, Inc. Electromagnetic noise position sensing
CN114594494B (zh) * 2022-01-13 2022-10-21 杭州宏景智驾科技有限公司 激光雷达系统及其环境光去噪方法
CN117079975B (zh) 2023-07-28 2024-04-30 厦门亿芯源半导体科技有限公司 高速tia抗5g wifi电磁干扰方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576452A (en) * 1968-05-28 1971-04-27 Motorola Inc Photodiode preamplifier circuit for a card reader system
US4384201A (en) * 1978-04-24 1983-05-17 Carroll Manufacturing Corporation Three-dimensional protective interlock apparatus
US4243879A (en) * 1978-04-24 1981-01-06 Carroll Manufacturing Corporation Touch panel with ambient light sampling
US4198623A (en) * 1978-11-13 1980-04-15 Sanders Associates, Inc. Touch entry interactive cathode ray tube arrangement
US4335316A (en) * 1980-04-09 1982-06-15 Baldwin-Korthe Web Controls, Inc. Web break detector with adjustable scanning head

Also Published As

Publication number Publication date
CA1220829A (en) 1987-04-21
IT8448530A0 (it) 1984-07-09
JPS60501825A (ja) 1985-10-24
DE3467944D1 (en) 1988-01-14
IT1179391B (it) 1987-09-16
JPS633333B2 (enExample) 1988-01-22
WO1985000682A1 (en) 1985-02-14
KR850001590A (ko) 1985-03-30
AU572536B2 (en) 1988-05-12
IT8448530A1 (it) 1986-01-09
AU3152784A (en) 1985-03-04
IL72296A0 (en) 1984-11-30
ES534167A0 (es) 1985-12-16
ES8603666A1 (es) 1985-12-16
EP0149668A1 (en) 1985-07-31
US4591710A (en) 1986-05-27
IL72296A (en) 1987-10-20
EP0149668B1 (en) 1987-12-02

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