DE3273873D1 - Capacitive keyboard with anti-parasite structure - Google Patents
Capacitive keyboard with anti-parasite structureInfo
- Publication number
- DE3273873D1 DE3273873D1 DE8282400554T DE3273873T DE3273873D1 DE 3273873 D1 DE3273873 D1 DE 3273873D1 DE 8282400554 T DE8282400554 T DE 8282400554T DE 3273873 T DE3273873 T DE 3273873T DE 3273873 D1 DE3273873 D1 DE 3273873D1
- Authority
- DE
- Germany
- Prior art keywords
- capacitive keyboard
- parasite structure
- parasite
- capacitive
- keyboard
- 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
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
- H03K17/9622—Capacitive touch switches using a plurality of detectors, e.g. keyboard
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/9607—Capacitive touch switches
- H03K2217/960755—Constructional details of capacitive touch and proximity switches
- H03K2217/96077—Constructional details of capacitive touch and proximity switches comprising an electrode which is floating
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8106757A FR2503494A1 (fr) | 1981-04-03 | 1981-04-03 | Structure antiparasite pour clavier capacitif |
FR8106758A FR2503495A1 (fr) | 1981-04-03 | 1981-04-03 | Dispositif d'elimination des parasites recus dans un clavier capacitif et procede de mise en oeuvre de ce dispositif |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3273873D1 true DE3273873D1 (en) | 1986-11-20 |
Family
ID=26222315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8282400554T Expired DE3273873D1 (en) | 1981-04-03 | 1982-03-26 | Capacitive keyboard with anti-parasite structure |
Country Status (3)
Country | Link |
---|---|
US (1) | US4543564A (de) |
EP (1) | EP0062572B1 (de) |
DE (1) | DE3273873D1 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2520954B1 (fr) * | 1982-01-29 | 1985-11-29 | Commissariat Energie Atomique | Structure de clavier capacitif |
GB8409877D0 (en) * | 1984-04-17 | 1984-05-31 | Binstead Ronald Peter | Capacitance effect keyboard |
US4758830A (en) * | 1984-10-25 | 1988-07-19 | Ti Corporate Services Limited | Switch/display units |
US4651133A (en) * | 1984-12-24 | 1987-03-17 | At&T Technologies, Inc. | Method and apparatus for capacitive keyboard scanning |
GB2173931B (en) * | 1985-04-16 | 1988-05-11 | Ncr Co | Data input system including a keyboard having no moving parts |
FR2581491A1 (fr) * | 1985-05-02 | 1986-11-07 | Lewiner Jacques | Perfectionnements aux ensembles electroniques d'identification des claviers capacitifs |
JP2733300B2 (ja) * | 1989-04-28 | 1998-03-30 | 松下電器産業株式会社 | キー入力装置 |
US5036321A (en) * | 1989-08-31 | 1991-07-30 | Otis Elevator Company | Capacitive sensing, solid state touch button system |
JP3939366B2 (ja) * | 1992-12-09 | 2007-07-04 | 松下電器産業株式会社 | キーボード入力装置 |
DE4419866A1 (de) * | 1994-06-07 | 1995-12-14 | Ego Elektro Blanc & Fischer | Steuerungsanordnung für ein Elektrowärmegerät |
US6016355A (en) * | 1995-12-15 | 2000-01-18 | Veridicom, Inc. | Capacitive fingerprint acquisition sensor |
US6049620A (en) | 1995-12-15 | 2000-04-11 | Veridicom, Inc. | Capacitive fingerprint sensor with adjustable gain |
US6246566B1 (en) | 1999-02-08 | 2001-06-12 | Amkor Technology, Inc. | Electrostatic discharge protection package and method |
US6518560B1 (en) | 2000-04-27 | 2003-02-11 | Veridicom, Inc. | Automatic gain amplifier for biometric sensor device |
US7679680B2 (en) * | 2003-02-14 | 2010-03-16 | Thomson Licensing | Apparatus in a TV receiver for automatically detecting the type of keyboard attached thereto |
JP2006235804A (ja) * | 2005-02-23 | 2006-09-07 | Alps Electric Co Ltd | 入力装置 |
US8279180B2 (en) | 2006-05-02 | 2012-10-02 | Apple Inc. | Multipoint touch surface controller |
US9766738B1 (en) | 2006-08-23 | 2017-09-19 | Cypress Semiconductor Corporation | Position and usage based prioritization for capacitance sense interface |
TW200906071A (en) * | 2007-07-24 | 2009-02-01 | Beyond Innovation Tech Co Ltd | Key system and method capable of detecting if a plurality of keys are triggered |
DE102007050654B4 (de) | 2007-10-24 | 2015-06-18 | Diehl Ako Stiftung & Co. Kg | Kapazitiver Berührungsschalter |
CN101907961B (zh) * | 2009-06-08 | 2012-06-13 | 深圳市鑫汇科科技有限公司 | 电容式感应键实现方法、感应键电路及键盘 |
US8735755B2 (en) | 2011-03-07 | 2014-05-27 | Synaptics Incorporated | Capacitive keyswitch technologies |
EP4020147A1 (de) | 2014-05-06 | 2022-06-29 | Texas Instruments Incorporated | Kapazitiver berührungssensor und verfahren |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2333260A1 (de) * | 1972-07-07 | 1974-01-24 | Redac Software Ltd | Elektrische schaltungsanordnung zum erfassen der arbeitsweise einer elektrischen schalteranordnung |
US3815127A (en) * | 1973-03-20 | 1974-06-04 | Control Data Corp | Data entry device |
GB1525016A (en) * | 1975-09-23 | 1978-09-20 | Sefton P | Electric touch or proximity switches |
GB1582640A (en) * | 1976-10-18 | 1981-01-14 | Alphameric Keyboards Ltd | Keyboards for electronic circuits |
JPS586966B2 (ja) * | 1977-05-24 | 1983-02-07 | ぺんてる株式会社 | 容量結合タブレット |
US4225807A (en) * | 1977-07-13 | 1980-09-30 | Sharp Kabushiki Kaisha | Readout scheme of a matrix type thin-film EL display panel |
US4145748A (en) * | 1977-12-23 | 1979-03-20 | General Electric Company | Self-optimizing touch pad sensor circuit |
CH623195B (fr) * | 1978-04-11 | 1900-01-01 | Ebauches Sa | Montre electronique avec moyens de commande et de selection des fonctions. |
US4211915A (en) * | 1978-12-04 | 1980-07-08 | General Electric Company | Keyboard verification system |
US4305135A (en) * | 1979-07-30 | 1981-12-08 | International Business Machines Corp. | Program controlled capacitive keyboard variable threshold sensing system |
US4291303A (en) * | 1979-08-23 | 1981-09-22 | General Electric Company | Touch pad and display tube circuitry |
-
1982
- 1982-03-26 DE DE8282400554T patent/DE3273873D1/de not_active Expired
- 1982-03-26 US US06/362,290 patent/US4543564A/en not_active Expired - Fee Related
- 1982-03-26 EP EP82400554A patent/EP0062572B1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0062572A3 (en) | 1983-06-22 |
EP0062572B1 (de) | 1986-10-15 |
EP0062572A2 (de) | 1982-10-13 |
US4543564A (en) | 1985-09-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |