CA960587A - Key input circuit system for electronic apparatus - Google Patents

Key input circuit system for electronic apparatus

Info

Publication number
CA960587A
CA960587A CA153,442A CA153442A CA960587A CA 960587 A CA960587 A CA 960587A CA 153442 A CA153442 A CA 153442A CA 960587 A CA960587 A CA 960587A
Authority
CA
Canada
Prior art keywords
electronic apparatus
input circuit
key input
circuit system
key
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
CA153,442A
Other languages
English (en)
Other versions
CA153442S (en
Inventor
Kosei Nomiya
Takao Tsuiki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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.)
Filing date
Publication date
Priority claimed from JP46078659A external-priority patent/JPS4843835A/ja
Priority claimed from JP46078653A external-priority patent/JPS4843834A/ja
Priority claimed from JP46080141A external-priority patent/JPS4846219A/ja
Priority claimed from JP347772A external-priority patent/JPS534770B2/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of CA960587A publication Critical patent/CA960587A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
    • 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
    • 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
    • H03M11/20—Dynamic coding, i.e. by key scanning

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Input From Keyboards Or The Like (AREA)
CA153,442A 1971-10-08 1972-10-06 Key input circuit system for electronic apparatus Expired CA960587A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP46078659A JPS4843835A (cs) 1971-10-08 1971-10-08
JP46078653A JPS4843834A (cs) 1971-10-08 1971-10-08
JP46080141A JPS4846219A (cs) 1971-10-13 1971-10-13
JP347772A JPS534770B2 (cs) 1971-12-29 1971-12-29

Publications (1)

Publication Number Publication Date
CA960587A true CA960587A (en) 1975-01-07

Family

ID=27453875

Family Applications (1)

Application Number Title Priority Date Filing Date
CA153,442A Expired CA960587A (en) 1971-10-08 1972-10-06 Key input circuit system for electronic apparatus

Country Status (7)

Country Link
US (1) US3818441A (cs)
CA (1) CA960587A (cs)
DE (1) DE2249379A1 (cs)
FR (1) FR2155678A5 (cs)
GB (1) GB1402162A (cs)
IT (1) IT968793B (cs)
NL (1) NL7213611A (cs)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5086929A (cs) * 1973-11-30 1975-07-12
JPS5221729A (en) * 1975-08-11 1977-02-18 Sharp Corp Key input device
US4016967A (en) * 1975-11-18 1977-04-12 Hamilton Communications, Inc. Decoding means with error inhibitor for use with a typewriter
JPS52149029A (en) * 1976-06-04 1977-12-10 Seiko Epson Corp Keyboard
US4164666A (en) * 1976-06-08 1979-08-14 Toyko Shibaura Electric Co., Ltd. Electronic apparatus using complementary MOS transistor dynamic clocked logic circuits
US4117758A (en) * 1976-11-04 1978-10-03 Kimball International, Inc. Binary word debouncer
JPS5477532A (en) * 1977-12-02 1979-06-21 Matsushita Electric Ind Co Ltd Key identifying circuit
JPS6275828A (ja) * 1985-09-30 1987-04-07 Toshiba Corp キ−回路
SE508136C2 (sv) * 1996-12-19 1998-08-31 Ericsson Telefon Ab L M Anordning och förfarande för tangentbordsavläsning
TWI345168B (en) * 2007-09-27 2011-07-11 Sunplus Innovation Technology Inc Tilt-wheel mouse circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3456077A (en) * 1965-09-22 1969-07-15 Navigation Computer Corp High speed electronic keyboard assembly
JPS5035372B1 (cs) * 1970-03-26 1975-11-15
JPS5019374Y1 (cs) * 1970-11-25 1975-06-12
US3721976A (en) * 1971-02-01 1973-03-20 Omron Syst Inc Keyboard coding and interlock system

Also Published As

Publication number Publication date
FR2155678A5 (cs) 1973-05-18
US3818441A (en) 1974-06-18
DE2249379A1 (de) 1973-04-19
IT968793B (it) 1974-03-20
GB1402162A (en) 1975-08-06
NL7213611A (cs) 1973-04-10

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