BE791475A - KEYPAD ALLOWING THE CONTROL OF THE KEYS IN A LINKED WAY - Google Patents

KEYPAD ALLOWING THE CONTROL OF THE KEYS IN A LINKED WAY

Info

Publication number
BE791475A
BE791475A BE791475DA BE791475A BE 791475 A BE791475 A BE 791475A BE 791475D A BE791475D A BE 791475DA BE 791475 A BE791475 A BE 791475A
Authority
BE
Belgium
Prior art keywords
keys
control
keypad allowing
linked way
linked
Prior art date
Application number
Other languages
French (fr)
Original Assignee
Philips Nv
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.)
Publication date
Publication of BE791475A publication Critical patent/BE791475A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/16—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of transmitters, e.g. code-bars, code-discs
    • 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
    • H03M11/003—Phantom keys detection and prevention

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Electronic Switches (AREA)
BE791475D 1971-11-17 KEYPAD ALLOWING THE CONTROL OF THE KEYS IN A LINKED WAY BE791475A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7115804,A NL170895C (en) 1971-11-17 1971-11-17 KEYBOARD WITH CYCLIC QUESTIONER.

Publications (1)

Publication Number Publication Date
BE791475A true BE791475A (en) 1973-05-16

Family

ID=19814496

Family Applications (1)

Application Number Title Priority Date Filing Date
BE791475D BE791475A (en) 1971-11-17 KEYPAD ALLOWING THE CONTROL OF THE KEYS IN A LINKED WAY

Country Status (10)

Country Link
US (1) US3778818A (en)
JP (1) JPS538455B2 (en)
BE (1) BE791475A (en)
CA (1) CA973805A (en)
DE (1) DE2255372C3 (en)
FR (1) FR2161660A5 (en)
GB (1) GB1410811A (en)
IT (1) IT973544B (en)
NL (1) NL170895C (en)
SE (1) SE385986B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096935A (en) * 1974-02-22 1978-06-27 Canon Kabushiki Kaisha Input device
JPS5535679U (en) * 1978-08-31 1980-03-07
FR2447089A1 (en) * 1979-01-17 1980-08-14 Serras Paulet Edouard KEY CONTROL KEYBOARD AND MECHANICAL SWITCHES
FR2449388A1 (en) * 1979-02-13 1980-09-12 Cii Honeywell Bull Entry system for coded data into data processing system - employs electronic keyboard containing memory and coding cells, which are clocked by pulse generator
EP0095023A3 (en) * 1982-05-20 1985-04-10 International Business Machines Corporation Contact keyboard with finger controlled n-key rollover
US4500169A (en) * 1982-07-13 1985-02-19 Donnelly John H Cosmetic and observer line of sight mirror

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035372B1 (en) * 1970-03-26 1975-11-15

Also Published As

Publication number Publication date
NL7115804A (en) 1973-05-21
GB1410811A (en) 1975-10-22
JPS538455B2 (en) 1978-03-29
DE2255372B2 (en) 1977-10-13
SE385986B (en) 1976-07-26
JPS4858922A (en) 1973-08-18
US3778818A (en) 1973-12-11
IT973544B (en) 1974-06-10
NL170895C (en) 1983-01-03
CA973805A (en) 1975-09-02
FR2161660A5 (en) 1973-07-06
DE2255372A1 (en) 1973-05-24
DE2255372C3 (en) 1978-06-08
NL170895B (en) 1982-08-02

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: N.V. PHILIPS GLOEILAMPENFABRIEKEN

Effective date: 19891130