DE2145119C3 - - Google Patents

Info

Publication number
DE2145119C3
DE2145119C3 DE2145119A DE2145119A DE2145119C3 DE 2145119 C3 DE2145119 C3 DE 2145119C3 DE 2145119 A DE2145119 A DE 2145119A DE 2145119 A DE2145119 A DE 2145119A DE 2145119 C3 DE2145119 C3 DE 2145119C3
Authority
DE
Germany
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
DE2145119A
Other versions
DE2145119B2 (de
DE2145119A1 (de
Inventor
Howard Thomas Kettering Ackerman
Clarence William Dayton Kessler
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.)
National Cash Register Co
Original Assignee
National Cash Register 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 National Cash Register Co filed Critical National Cash Register Co
Publication of DE2145119A1 publication Critical patent/DE2145119A1/de
Publication of DE2145119B2 publication Critical patent/DE2145119B2/de
Application granted granted Critical
Publication of DE2145119C3 publication Critical patent/DE2145119C3/de
Granted legal-status Critical Current

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
DE19712145119 1970-09-14 1971-09-09 Dateneingabevorrichtung Granted DE2145119B2 (de)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
DE2145119A1 DE2145119A1 (de) 1972-03-23
DE2145119B2 DE2145119B2 (de) 1973-03-22
DE2145119C3 true DE2145119C3 (de) 1973-10-11

Family

ID=22104765

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712145119 Granted DE2145119B2 (de) 1970-09-14 1971-09-09 Dateneingabevorrichtung

Country Status (15)

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

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 (de) * 1973-11-30 1975-07-12
US3995252A (en) * 1973-12-26 1976-11-30 General Electric Company Data processing arrangement for printers
JPS5187917A (de) * 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
US6028271A (en) * 1992-06-08 2000-02-22 Synaptics, Inc. Object position detector with edge motion feature and gesture recognition
US5880411A (en) 1992-06-08 1999-03-09 Synaptics, Incorporated Object position detector with edge motion feature and gesture recognition
DE69324067T2 (de) * 1992-06-08 1999-07-15 Synaptics Inc Objekt-Positionsdetektor
US5861583A (en) * 1992-06-08 1999-01-19 Synaptics, Incorporated Object position detector
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
CN108809321B (zh) * 2016-01-05 2022-03-18 湖南工业大学 一种矩阵式键盘操作识别及编码方法
CN108649962B (zh) * 2016-01-05 2022-01-21 湖南工业大学 一种独立式键盘扫描编码方法
CN105680874B (zh) * 2016-01-05 2018-06-26 湖南工业大学 矩阵式键盘扫描电路及扫描编码方法

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
BR7105984D0 (pt) 1973-04-10
FR2112956A5 (de) 1972-06-23
NL178455B (nl) 1985-10-16
DE2145119B2 (de) 1973-03-22
CH535458A (de) 1973-03-31
GB1316215A (en) 1973-05-09
AU443750B2 (en) 1974-01-03
CA923433A (en) 1973-03-27
AU3232171A (en) 1973-02-15
US3675239A (en) 1972-07-04
AT313608B (de) 1974-02-25
NO131956C (de) 1975-08-27
NL7112625A (de) 1972-03-16
ES394738A1 (es) 1974-10-01
SE361222B (de) 1973-10-22
NL178455C (nl) 1986-03-17
BE772502A (fr) 1972-01-17
ZA715289B (en) 1972-04-26
NO131956B (de) 1975-05-20
DE2145119A1 (de) 1972-03-23

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee