CH607132A5 - - Google Patents

Info

Publication number
CH607132A5
CH607132A5 CH269774A CH269774A CH607132A5 CH 607132 A5 CH607132 A5 CH 607132A5 CH 269774 A CH269774 A CH 269774A CH 269774 A CH269774 A CH 269774A CH 607132 A5 CH607132 A5 CH 607132A5
Authority
CH
Switzerland
Application number
CH269774A
Inventor
Toshio Kashio
Original Assignee
Casio Computer Co 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 JP48022207A external-priority patent/JPS49113530A/ja
Priority claimed from JP48022206A external-priority patent/JPS49113529A/ja
Application filed by Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Publication of CH607132A5 publication Critical patent/CH607132A5/xx

Links

Classifications

    • 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)
  • Input From Keyboards Or The Like (AREA)
CH269774A 1973-02-26 1974-02-26 CH607132A5 (xx)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP48022207A JPS49113530A (xx) 1973-02-26 1973-02-26
JP48022206A JPS49113529A (xx) 1973-02-26 1973-02-26

Publications (1)

Publication Number Publication Date
CH607132A5 true CH607132A5 (xx) 1978-11-30

Family

ID=26359388

Family Applications (1)

Application Number Title Priority Date Filing Date
CH269774A CH607132A5 (xx) 1973-02-26 1974-02-26

Country Status (5)

Country Link
US (1) US3949365A (xx)
CA (1) CA1013264A (xx)
CH (1) CH607132A5 (xx)
FR (1) FR2219462B1 (xx)
GB (1) GB1464912A (xx)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1555979A (en) * 1975-08-15 1979-11-14 Nippon Musical Instruments Mfg Device for detecting a key switch operation
US4145687A (en) * 1975-09-30 1979-03-20 Denki Onkyo Co., Ltd. Keyboard switch circuit for use in a matrix which has a series circuit including a reluctance element and a diode connected between each row and column of the matrix
US4106011A (en) * 1975-10-24 1978-08-08 Tektronix, Inc. Keyboard circuit
US4199750A (en) * 1975-11-10 1980-04-22 Hitachi, Ltd. Key input circuit capable of roll-over operation
JPS5848110B2 (ja) * 1976-12-24 1983-10-26 カシオ計算機株式会社 クロツク数選択装置
US4190826A (en) * 1977-05-18 1980-02-26 Bell Telephone Laboratories, Incorporated Multidevice position digital encoder
US4222038A (en) * 1978-02-24 1980-09-09 Motorola, Inc. Microcomputer keyboard input circuitry
US4293849A (en) * 1979-05-23 1981-10-06 Phillips Petroleum Company Keyboard encoder using priority encoders
US4405917A (en) * 1981-04-28 1983-09-20 Honeywell Inc. Matrix screening and grounding arrangement and method
DE3369449D1 (en) * 1982-05-07 1987-02-26 Philips Electronic Associated Data entry keyboard apparatus
US4758829A (en) * 1982-06-04 1988-07-19 Smith Iii William N Apparatus for stimulating a keyboard

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483553A (en) * 1967-06-08 1969-12-09 Scantlin Electronics Inc Keyboard input system
US3651463A (en) * 1970-04-17 1972-03-21 Medidata Soiences Inc Switch coding circuitry
US3623082A (en) * 1970-05-27 1971-11-23 Clare & Co C P Keyboard assembly
US3662378A (en) * 1970-06-01 1972-05-09 Cherry Electrical Prod Electronic keyboard input circuit
US3683371A (en) * 1970-09-15 1972-08-08 Burroughs Corp Magnetic keyboard terminal
US3819862A (en) * 1972-01-10 1974-06-25 Motorola Inc Communication system with portable units connected through a communication channel to a computer for applying information thereto

Also Published As

Publication number Publication date
DE2409170B2 (de) 1976-05-13
FR2219462B1 (xx) 1976-06-25
GB1464912A (en) 1977-02-16
FR2219462A1 (xx) 1974-09-20
DE2409170A1 (de) 1974-09-12
CA1013264A (en) 1977-07-05
US3949365A (en) 1976-04-06

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Legal Events

Date Code Title Description
PL Patent ceased