JPS54161233A - Detection system for switching state of electrostatic capacity type switch - Google Patents
Detection system for switching state of electrostatic capacity type switchInfo
- Publication number
- JPS54161233A JPS54161233A JP6761578A JP6761578A JPS54161233A JP S54161233 A JPS54161233 A JP S54161233A JP 6761578 A JP6761578 A JP 6761578A JP 6761578 A JP6761578 A JP 6761578A JP S54161233 A JPS54161233 A JP S54161233A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- switching state
- electrostatic capacity
- capacity type
- type switch
- 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.)
- Pending
Links
Landscapes
- Input From Keyboards Or The Like (AREA)
Abstract
PURPOSE: To prevent error detection by increasing tolerance to a noise by integrating a signal from a switch used for a switching state detection system twice.
CONSTITUTION: To electrostatic capacity type switch 6, two integrators 7 and 8 are connected in series and alternating signal A is applied to one electrode of switch 6 of the circuit; and the key of switch 6 is depressed to output differential wave B from the other electrode of switch 6 and this differential wave B is integrated by integrator 7 to output square wave E. This square wave E is integrated again by integrator 8 to output triangular wave F. Then, the output of electrostatic capacity type switch 6 detecting the switching state is integrated twice to increase tolerance to a noise, thereby preventing error detection.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6761578A JPS54161233A (en) | 1978-06-07 | 1978-06-07 | Detection system for switching state of electrostatic capacity type switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6761578A JPS54161233A (en) | 1978-06-07 | 1978-06-07 | Detection system for switching state of electrostatic capacity type switch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54161233A true JPS54161233A (en) | 1979-12-20 |
Family
ID=13350032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6761578A Pending JPS54161233A (en) | 1978-06-07 | 1978-06-07 | Detection system for switching state of electrostatic capacity type switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54161233A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49114830A (en) * | 1973-02-28 | 1974-11-01 | ||
JPS5150528A (en) * | 1974-10-29 | 1976-05-04 | Tokyo Shibaura Electric Co | |
JPS52123132A (en) * | 1976-04-06 | 1977-10-17 | Burroughs Corp | Method of altering transmission signal amplitude in keyboard |
JPS534831B2 (en) * | 1974-03-06 | 1978-02-21 |
-
1978
- 1978-06-07 JP JP6761578A patent/JPS54161233A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49114830A (en) * | 1973-02-28 | 1974-11-01 | ||
JPS534831B2 (en) * | 1974-03-06 | 1978-02-21 | ||
JPS5150528A (en) * | 1974-10-29 | 1976-05-04 | Tokyo Shibaura Electric Co | |
JPS52123132A (en) * | 1976-04-06 | 1977-10-17 | Burroughs Corp | Method of altering transmission signal amplitude in keyboard |
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