NO131956B - - Google Patents

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Publication number
NO131956B
NO131956B NO3317/71A NO331771A NO131956B NO 131956 B NO131956 B NO 131956B NO 3317/71 A NO3317/71 A NO 3317/71A NO 331771 A NO331771 A NO 331771A NO 131956 B NO131956 B NO 131956B
Authority
NO
Norway
Prior art keywords
shift register
time
key
binary
pulse
Prior art date
Application number
NO3317/71A
Other languages
English (en)
Norwegian (no)
Other versions
NO131956C (forum.php
Inventor
H T Ackerman
C W Kessler
Original Assignee
Ncr Co
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
Application filed by Ncr Co filed Critical Ncr Co
Publication of NO131956B publication Critical patent/NO131956B/no
Publication of NO131956C publication Critical patent/NO131956C/no

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)
NO3317/71A 1970-09-14 1971-09-06 NO131956C (forum.php)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7197270A 1970-09-14 1970-09-14

Publications (2)

Publication Number Publication Date
NO131956B true NO131956B (forum.php) 1975-05-20
NO131956C NO131956C (forum.php) 1975-08-27

Family

ID=22104765

Family Applications (1)

Application Number Title Priority Date Filing Date
NO3317/71A NO131956C (forum.php) 1970-09-14 1971-09-06

Country Status (15)

Country Link
US (1) US3675239A (forum.php)
AT (1) AT313608B (forum.php)
AU (1) AU443750B2 (forum.php)
BE (1) BE772502A (forum.php)
BR (1) BR7105984D0 (forum.php)
CA (1) CA923433A (forum.php)
CH (1) CH535458A (forum.php)
DE (1) DE2145119B2 (forum.php)
ES (1) ES394738A1 (forum.php)
FR (1) FR2112956A5 (forum.php)
GB (1) GB1316215A (forum.php)
NL (1) NL178455C (forum.php)
NO (1) NO131956C (forum.php)
SE (1) SE361222B (forum.php)
ZA (1) ZA715289B (forum.php)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121284A (en) * 1972-09-11 1978-10-17 Hyatt Gilbert P Computerized system for operator interaction
NL166140C (nl) * 1970-11-14 1981-06-15 Philips Nv Toetsenbord.
USRE31942E (en) * 1971-03-01 1985-07-09 High speed serial scan and readout of keyboards
US4517553A (en) * 1971-05-19 1985-05-14 Illinois Tool Works Inc. N-Key rollover keyboard
CA937875A (en) * 1971-05-19 1973-12-04 M. Bernin Victor N-key rollover keyboard
US3792466A (en) * 1972-05-31 1974-02-12 Mos Technology Inc Keyboard entry system with n-key rollover and n-key lockout protection
US3786497A (en) * 1972-07-31 1974-01-15 Ibm Matrix keyboard method and apparatus
US3921166A (en) * 1972-09-15 1975-11-18 Raytheon Co Capacitance matrix keyboard
US3825926A (en) * 1973-02-05 1974-07-23 Ibm Interfacing circuitry for connecting a remote keyboard with a data receiving buffer
US3886543A (en) * 1973-11-29 1975-05-27 Teletype Corp Debounce logic for keyboard
JPS5086929A (forum.php) * 1973-11-30 1975-07-12
US3995252A (en) * 1973-12-26 1976-11-30 General Electric Company Data processing arrangement for printers
JPS5187917A (forum.php) * 1975-01-31 1976-07-31 Hitachi Ltd
US4042777A (en) * 1975-10-06 1977-08-16 International Business Machines Corporation One-handed keyboard and its control means
US4106011A (en) * 1975-10-24 1978-08-08 Tektronix, Inc. Keyboard circuit
US4024534A (en) * 1975-11-24 1977-05-17 Xerox Corporation Keyboard encoding with repeat key pause
US4164666A (en) * 1976-06-08 1979-08-14 Toyko Shibaura Electric Co., Ltd. Electronic apparatus using complementary MOS transistor dynamic clocked logic circuits
US4211915A (en) * 1978-12-04 1980-07-08 General Electric Company Keyboard verification system
US4684934A (en) * 1983-02-28 1987-08-04 Data General Corporation Method and apparatus for storing and retrieving keyboard LED data
ES2040172B1 (es) * 1991-12-31 1994-05-01 Alcatel Standard Electrica Procedimiento y dispositivo para la lectura de teclados.
US6239389B1 (en) 1992-06-08 2001-05-29 Synaptics, Inc. Object position detection system and method
US5889236A (en) * 1992-06-08 1999-03-30 Synaptics Incorporated Pressure sensitive scrollbar feature
US5880411A (en) 1992-06-08 1999-03-09 Synaptics, Incorporated Object position detector with edge motion feature and gesture recognition
US6028271A (en) * 1992-06-08 2000-02-22 Synaptics, Inc. Object position detector with edge motion feature and gesture recognition
US5861583A (en) * 1992-06-08 1999-01-19 Synaptics, Incorporated Object position detector
DE69324067T2 (de) * 1992-06-08 1999-07-15 Synaptics Inc Objekt-Positionsdetektor
US6380929B1 (en) 1996-09-20 2002-04-30 Synaptics, Incorporated Pen drawing computer input device
US5854625A (en) * 1996-11-06 1998-12-29 Synaptics, Incorporated Force sensing touchpad
CN105680875B (zh) * 2016-01-05 2018-07-24 湖南工业大学 矩阵式键盘操作识别及编码电路
CN105680873B (zh) * 2016-01-05 2018-06-26 湖南工业大学 独立式键盘扫描编码电路
CN108880560B (zh) * 2016-01-05 2022-03-18 湖南工业大学 一种矩阵式键盘反转法扫描电路

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1060878A (en) * 1965-06-18 1967-03-08 Creed & Co Ltd Code generating keyboards
US3308918A (en) * 1965-09-20 1967-03-14 Ibm Pseudo-interlock employing strobe signal with selected keys
US3568183A (en) * 1968-07-09 1971-03-02 Gen Electric Keyboard synchronized toned generator

Also Published As

Publication number Publication date
SE361222B (forum.php) 1973-10-22
US3675239A (en) 1972-07-04
FR2112956A5 (forum.php) 1972-06-23
ES394738A1 (es) 1974-10-01
DE2145119C3 (forum.php) 1973-10-11
AU3232171A (en) 1973-02-15
DE2145119B2 (de) 1973-03-22
GB1316215A (en) 1973-05-09
BE772502A (fr) 1972-01-17
AT313608B (de) 1974-02-25
NL178455B (nl) 1985-10-16
NL178455C (nl) 1986-03-17
CH535458A (de) 1973-03-31
NL7112625A (forum.php) 1972-03-16
DE2145119A1 (de) 1972-03-23
NO131956C (forum.php) 1975-08-27
CA923433A (en) 1973-03-27
AU443750B2 (en) 1974-01-03
BR7105984D0 (pt) 1973-04-10
ZA715289B (en) 1972-04-26

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