GB1388143A - Keyboard encoder - Google Patents

Keyboard encoder

Info

Publication number
GB1388143A
GB1388143A GB2203072A GB2203072A GB1388143A GB 1388143 A GB1388143 A GB 1388143A GB 2203072 A GB2203072 A GB 2203072A GB 2203072 A GB2203072 A GB 2203072A GB 1388143 A GB1388143 A GB 1388143A
Authority
GB
United Kingdom
Prior art keywords
gates
switch
output
pulses
enabled
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
GB2203072A
Other languages
English (en)
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of GB1388143A publication Critical patent/GB1388143A/en
Expired 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
    • H03M11/22—Static coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Input From Keyboards Or The Like (AREA)
GB2203072A 1971-05-17 1972-05-11 Keyboard encoder Expired GB1388143A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14386071A 1971-05-17 1971-05-17

Publications (1)

Publication Number Publication Date
GB1388143A true GB1388143A (en) 1975-03-26

Family

ID=22505980

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2203072A Expired GB1388143A (en) 1971-05-17 1972-05-11 Keyboard encoder

Country Status (7)

Country Link
US (1) US3778815A (https=)
CA (1) CA952033A (https=)
DE (1) DE2224140B2 (https=)
FR (1) FR2138053B1 (https=)
GB (1) GB1388143A (https=)
IT (1) IT955525B (https=)
SE (1) SE371510B (https=)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS536817B2 (https=) * 1972-04-04 1978-03-11
JPS5319374B2 (https=) * 1973-04-03 1978-06-20
JPS5086929A (https=) * 1973-11-30 1975-07-12
US4419769A (en) * 1976-03-08 1983-12-06 General Instrument Corporation Digital tuning system for a varactor tuner employing feedback means for improved tuning accuracy
US4157539A (en) * 1976-10-14 1979-06-05 The Singer Company Charge rate, capacitive switch system
US4326194A (en) * 1979-04-16 1982-04-20 The Singer Company Dual encoded switching matrix
JPS607808B2 (ja) * 1979-08-24 1985-02-27 株式会社東芝 キ−入力回路
US4667181A (en) * 1983-07-15 1987-05-19 Honeywell Inc. Keyboard data input assembly
US4673933A (en) * 1983-11-14 1987-06-16 American Microsystems, Inc. Switch matrix encoding interface using common input/output parts
US5189629A (en) * 1990-06-06 1993-02-23 Hughes Aircraft Company Method of logic gate reduction in a logic gate array
SE508136C2 (sv) 1996-12-19 1998-08-31 Ericsson Telefon Ab L M Anordning och förfarande för tangentbordsavläsning

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610243A (en) * 1951-04-06 1952-09-09 Monroe Calculating Machine Keyboard operated translating circuit
US3307148A (en) * 1962-04-16 1967-02-28 Nippon Electric Co Plural matrix decoding circuit
US3541547A (en) * 1968-03-15 1970-11-17 Ibm Code converter

Also Published As

Publication number Publication date
IT955525B (it) 1973-09-29
FR2138053A1 (https=) 1972-12-29
DE2224140B2 (de) 1974-02-14
US3778815A (en) 1973-12-11
DE2224140A1 (de) 1972-11-30
DE2224140C3 (https=) 1974-11-28
CA952033A (en) 1974-07-30
FR2138053B1 (https=) 1973-07-13
SE371510B (https=) 1974-11-18

Similar Documents

Publication Publication Date Title
ES345223A1 (es) Un procedimiento para la transmision de informaciones o da-tos digitales.
GB1249542A (en) A digital modulator
GB1256164A (en) Signal phasecompensation circuits
GB1388143A (en) Keyboard encoder
GB1093429A (en) Non-contacting displacement gauge
GB1282228A (en) Electronic circuit testing apparatus
GB1227829A (https=)
GB1464912A (en) Information input device
GB1432706A (en) Electronic keyboard input circuit
GB981922A (en) Data processing apparatus
GB1415469A (en) Information input device
ES423903A1 (es) Sistema electronico para el mando de ciclos.
GB1025300A (en) Improvements in or relating to digital signal detector circuits
GB1322068A (en) System for encoding input signals
GB1203730A (en) Binary arithmetic unit
GB1129659A (en) Signal generating circuits
GB1146278A (en) Pulse train detection
ES318469A1 (es) Un procedimiento utilizado en transmisiën de datos para elaborar un cëdigo definitivo
GB1486329A (en) Information input and display apparatus
GB1388369A (en) Keyboard input circuits
GB1250493A (https=)
GB1245789A (en) Circuit arrangement for the encoding and decoding of information
GB1281369A (en) Improvements in and relating to logic units and analog to digital converters comprising the same
GB1139381A (en) Logic switching network
GB1169530A (en) Telemeasuring Switch

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee