FR2139245A5 - - Google Patents
Info
- Publication number
- FR2139245A5 FR2139245A5 FR7213653A FR7213653A FR2139245A5 FR 2139245 A5 FR2139245 A5 FR 2139245A5 FR 7213653 A FR7213653 A FR 7213653A FR 7213653 A FR7213653 A FR 7213653A FR 2139245 A5 FR2139245 A5 FR 2139245A5
- Authority
- FR
- France
- 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
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/78—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites
- H01H13/785—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites characterised by the material of the contacts, e.g. conductive polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J5/00—Devices or arrangements for controlling character selection
- B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J5/00—Devices or arrangements for controlling character selection
- B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
- B41J5/12—Construction of key buttons
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/085—Error detection or correction by redundancy in data representation, e.g. by using checking codes using codes with inherent redundancy, e.g. n-out-of-m codes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
- H03M11/22—Static coding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/703—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by spacers between contact carrying layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2201/00—Contacts
- H01H2201/022—Material
- H01H2201/03—Composite
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2205/00—Movable contacts
- H01H2205/032—Several contacts formed in one plate or layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2207/00—Connections
- H01H2207/012—Connections via underside of substrate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2209/00—Layers
- H01H2209/006—Force isolators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2209/00—Layers
- H01H2209/01—Increasing rigidity; Anti-creep
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2211/00—Spacers
- H01H2211/006—Individual areas
- H01H2211/016—Wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2217/00—Facilitation of operation; Human engineering
- H01H2217/016—Pressure reduction membrane; Spreader layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2225/00—Switch site location
- H01H2225/018—Consecutive operations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2239/00—Miscellaneous
- H01H2239/026—Internal encoding, e.g. validity bit
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Input From Keyboards Or The Like (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13507671A | 1971-04-19 | 1971-04-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2139245A5 true FR2139245A5 (fr) | 1973-01-05 |
Family
ID=22466423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7213653A Expired FR2139245A5 (fr) | 1971-04-19 | 1972-04-18 |
Country Status (4)
Country | Link |
---|---|
US (1) | US3720938A (fr) |
DE (1) | DE2218807A1 (fr) |
FR (1) | FR2139245A5 (fr) |
IT (1) | IT953653B (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4931232A (fr) * | 1972-07-21 | 1974-03-20 | ||
US3803592A (en) * | 1972-09-11 | 1974-04-09 | Donnelly Mirrors Inc | Keyboard and digital circuit therefor |
US3838236A (en) * | 1973-05-23 | 1974-09-24 | Switches Inc | Actuating means for warning devices |
US4020293A (en) * | 1976-02-25 | 1977-04-26 | Gte Sylvania Incorporated | Drive circuitry with error detection and compensating threshold arrangement |
US4305135A (en) * | 1979-07-30 | 1981-12-08 | International Business Machines Corp. | Program controlled capacitive keyboard variable threshold sensing system |
JP2977145B2 (ja) * | 1993-03-18 | 1999-11-10 | 富士通株式会社 | キーボード回路装置 |
US5552781A (en) * | 1994-10-31 | 1996-09-03 | Ford Motor Company | Fault tolerant method of decoding an electronic key system |
US5832206A (en) * | 1996-03-25 | 1998-11-03 | Schlumberger Technologies, Inc. | Apparatus and method to provide security for a keypad processor of a transaction terminal |
JP2001142620A (ja) * | 1999-11-10 | 2001-05-25 | Nec Yamagata Ltd | キーボード |
FR2928016B1 (fr) * | 2008-02-26 | 2010-06-25 | Dav | Module de commande electrique |
CN107204766A (zh) * | 2015-05-21 | 2017-09-26 | 四川大学 | 一种三端轻触开关 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1165129B (fr) * | 1960-07-01 | |||
US3506795A (en) * | 1967-10-24 | 1970-04-14 | Raymond F Schmidt | Electrical switch device |
US3548375A (en) * | 1968-02-21 | 1970-12-15 | Lear Siegler Inc | Binary code checking arrangement |
US3576569A (en) * | 1968-10-02 | 1971-04-27 | Hewlett Packard Co | Plural matrix keyboard with electrical interlock circuit |
US3600528A (en) * | 1969-09-25 | 1971-08-17 | Lematex Corp | Multiple switch construction |
US3592979A (en) * | 1969-11-05 | 1971-07-13 | Ncr Co | Elastomeric keyboard with improved printed circuit contact means |
-
1971
- 1971-04-19 US US00135076A patent/US3720938A/en not_active Expired - Lifetime
-
1972
- 1972-04-18 DE DE19722218807 patent/DE2218807A1/de active Pending
- 1972-04-18 IT IT23295/72A patent/IT953653B/it active
- 1972-04-18 FR FR7213653A patent/FR2139245A5/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2218807A1 (de) | 1972-11-02 |
US3720938A (en) | 1973-03-13 |
IT953653B (it) | 1973-08-10 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |