JPS6134295B2 - - Google Patents
Info
- Publication number
- JPS6134295B2 JPS6134295B2 JP52033198A JP3319877A JPS6134295B2 JP S6134295 B2 JPS6134295 B2 JP S6134295B2 JP 52033198 A JP52033198 A JP 52033198A JP 3319877 A JP3319877 A JP 3319877A JP S6134295 B2 JPS6134295 B2 JP S6134295B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- pulse
- electrode
- output
- level
- 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
- 239000003990 capacitor Substances 0.000 claims description 25
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 description 18
- 239000011159 matrix material Substances 0.000 description 11
- 230000006870 function Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- REQCZEXYDRLIBE-UHFFFAOYSA-N procainamide Chemical compound CCN(CC)CCNC(=O)C1=CC=C(N)C=C1 REQCZEXYDRLIBE-UHFFFAOYSA-N 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- H03K17/965—Switches controlled by moving an element forming part of the switch
- H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
- H03K17/98—Switches controlled by moving an element forming part of the switch using a capacitive movable element having a plurality of control members, e.g. keyboard
-
- 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
- H03K17/965—Switches controlled by moving an element forming part of the switch
- H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
Landscapes
- Electronic Switches (AREA)
- Input From Keyboards Or The Like (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/674,215 US4110748A (en) | 1976-04-06 | 1976-04-06 | Keyswitch with hysteresis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52123132A JPS52123132A (en) | 1977-10-17 |
| JPS6134295B2 true JPS6134295B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1986-08-07 |
Family
ID=24705772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3319877A Granted JPS52123132A (en) | 1976-04-06 | 1977-03-24 | Method of altering transmission signal amplitude in keyboard |
Country Status (5)
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4194188A (en) * | 1977-09-26 | 1980-03-18 | Redactron Corporation | Interrogation of key switches using pulse width detection |
| JPS54161233A (en) * | 1978-06-07 | 1979-12-20 | Fujitsu Ltd | Detection system for switching state of electrostatic capacity type switch |
| US4230958A (en) * | 1978-08-09 | 1980-10-28 | Bell Telephone Laboratories, Incorporated | Loss of clock detector circuit |
| US4311990A (en) * | 1978-11-16 | 1982-01-19 | Optical Techniques International, Inc. | Photo-optical keyboards |
| US4263618A (en) * | 1979-03-19 | 1981-04-21 | Rca Corporation | Touch switch arrangement useful in a television receiver |
| US4704601A (en) * | 1985-06-27 | 1987-11-03 | Illinois Tool Works Inc. | Keyboard data entry system with hysteresis |
| JPH0648903Y2 (ja) * | 1986-11-14 | 1994-12-12 | ブラザー工業株式会社 | コンデンサキーボード用印刷回路基板 |
| WO1989009412A1 (en) * | 1988-03-31 | 1989-10-05 | Anritsu Corporation | Transition condition detector and measuring instrument utilizing the same |
| WO1995019661A1 (en) * | 1994-01-12 | 1995-07-20 | Loyer, Daniel, W. | Proximity sensing arrangement |
| GB9422911D0 (en) * | 1994-11-14 | 1995-01-04 | Moonstone Technology Ltd | Capacitive touch detectors |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5032569B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1968-09-04 | 1975-10-22 | ||
| US3631472A (en) * | 1970-01-02 | 1971-12-28 | Sperry Rand Corp | Capacitive keying module and system |
| US3691555A (en) * | 1970-03-30 | 1972-09-12 | Burroughs Corp | Electronic keyboard |
| US3918051A (en) * | 1971-05-19 | 1975-11-04 | Illinois Tool Works | N-key rollover keyboard |
| GB1345799A (en) * | 1971-06-15 | 1974-02-06 | Standard Telephones Cables Ltd | Electrical push button arrays |
| US3693059A (en) * | 1971-06-17 | 1972-09-19 | Ibm | Capacitive coupling switch and actuator |
| US3750113A (en) * | 1971-11-12 | 1973-07-31 | Becton Dickinson Co | Capacitive keyboard |
| US3717818A (en) * | 1972-01-10 | 1973-02-20 | J Herbst | Instantaneous voltage detector |
| US3912988A (en) * | 1973-01-29 | 1975-10-14 | Fischer & Porter Co | Capacitive detector for an electronic differential pressure transmitter |
| US3815127A (en) * | 1973-03-20 | 1974-06-04 | Control Data Corp | Data entry device |
| JPS5542759B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-11-02 | 1980-11-01 | ||
| US3982236A (en) * | 1974-12-24 | 1976-09-21 | Haig Kafafian | Communications and control method and apparatus for persons who may have muscular incoordination and/or spasticity |
-
1976
- 1976-04-06 US US05/674,215 patent/US4110748A/en not_active Expired - Lifetime
- 1976-12-13 FR FR7637534A patent/FR2347828A1/fr active Granted
-
1977
- 1977-02-15 GB GB6243/77A patent/GB1550957A/en not_active Expired
- 1977-02-15 GB GB29308/78A patent/GB1550959A/en not_active Expired
- 1977-02-15 GB GB29307/78A patent/GB1550958A/en not_active Expired
- 1977-03-24 JP JP3319877A patent/JPS52123132A/ja active Granted
- 1977-03-31 DE DE2714356A patent/DE2714356C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1550957A (en) | 1979-08-22 |
| GB1550958A (en) | 1979-08-22 |
| JPS52123132A (en) | 1977-10-17 |
| GB1550959A (en) | 1979-08-22 |
| FR2347828B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1982-08-06 |
| DE2714356A1 (de) | 1977-10-27 |
| DE2714356C2 (de) | 1984-11-22 |
| US4110748A (en) | 1978-08-29 |
| FR2347828A1 (fr) | 1977-11-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4077030A (en) | Sensor data input by means of analog to pulse width-to digital converter | |
| US8681110B2 (en) | Sensing circuit for use with capacitive touch panel | |
| US7612767B1 (en) | Trackpad pen for use with computer touchpad | |
| JPS6134295B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
| US8421774B2 (en) | Sensing circuit for use with capacitive touch panel | |
| JPS61206120A (ja) | キ−スイツチ | |
| EP0239695A2 (en) | Tunable delay line | |
| US3668698A (en) | Capacitive transducer | |
| US20160110020A1 (en) | Touch sensing method, touch display apparatus and portable electronic device | |
| JP2766101B2 (ja) | 表示付タブレット装置 | |
| CN114446665A (zh) | 一种可变电容装置、实现方法及压力开关装置 | |
| CN113532489A (zh) | 一种基于莫特绝缘体忆阻器的电容型传感架构 | |
| US4047241A (en) | Capacitive switch | |
| US3740745A (en) | Ring core keyboard entry device | |
| CN115208415A (zh) | 一种碳膜键盘电路 | |
| JPH0434779B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
| CN208209914U (zh) | 一种基于集成电路的脉冲分解器 | |
| GB1520111A (en) | Electrical position responsive arrangements | |
| JP2591802Y2 (ja) | 超音波発生素子駆動回路 | |
| JP2776016B2 (ja) | キーボード装置 | |
| SU1202046A1 (ru) | Устройство защиты от дребезга механических контактов | |
| JPH0351857Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
| JPS5914214B2 (ja) | 圧電キ−ボ−ド | |
| US3399751A (en) | Conversion device for integral recording of pulses | |
| JPS5815891B2 (ja) | スイツチキコウ |