SE401742B - Med tangentbord forsedd apparat for astadkommande av kodade signaler - Google Patents

Med tangentbord forsedd apparat for astadkommande av kodade signaler

Info

Publication number
SE401742B
SE401742B SE7404315A SE7404315A SE401742B SE 401742 B SE401742 B SE 401742B SE 7404315 A SE7404315 A SE 7404315A SE 7404315 A SE7404315 A SE 7404315A SE 401742 B SE401742 B SE 401742B
Authority
SE
Sweden
Prior art keywords
keyboard equipped
advanced signals
advanced
signals
keyboard
Prior art date
Application number
SE7404315A
Other languages
English (en)
Inventor
W V Harrison
W A Foster
Original Assignee
Collimation Inc
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 Collimation Inc filed Critical Collimation Inc
Publication of SE401742B publication Critical patent/SE401742B/sv

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
SE7404315A 1973-03-30 1974-03-29 Med tangentbord forsedd apparat for astadkommande av kodade signaler SE401742B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00346666A US3818485A (en) 1973-03-30 1973-03-30 Keyboard apparatus

Publications (1)

Publication Number Publication Date
SE401742B true SE401742B (sv) 1978-05-22

Family

ID=23360485

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7404315A SE401742B (sv) 1973-03-30 1974-03-29 Med tangentbord forsedd apparat for astadkommande av kodade signaler

Country Status (6)

Country Link
US (1) US3818485A (sv)
JP (1) JPS5632645B2 (sv)
CA (1) CA1005348A (sv)
DE (1) DE2415702A1 (sv)
GB (1) GB1461637A (sv)
SE (1) SE401742B (sv)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30094E (en) * 1974-07-29 1979-09-11 Tektronix, Inc. Optoelectronic switch
US3946225A (en) * 1974-07-29 1976-03-23 Tektronix, Inc. Optoelectronic switch
DE2612162A1 (de) * 1976-03-23 1977-10-06 Lothar Sachsse Digital-tastatur nebst optischem uebertrager
US4348122A (en) * 1980-10-23 1982-09-07 Balta Justin O Shift lock and position indicating torsion spring activated key switch
US4379968A (en) * 1980-12-24 1983-04-12 Burroughs Corp. Photo-optical keyboard having light attenuating means
USRE32419E (en) * 1981-03-16 1987-05-12 Engineering Research Applications, Inc. Molded keyboard and method of fabricating same
US5036191A (en) * 1989-01-13 1991-07-30 Sharp Kabushiki Kaisha Key input apparatus with light-shielding plates and liquid crystal shutter
GB2295687A (en) * 1994-12-01 1996-06-05 Ford Motor Co Manually operable optical switch with encoded shutter
US8500348B2 (en) * 2008-11-24 2013-08-06 Logitech Europe S.A. Keyboard with ultra-durable keys

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3369643A (en) * 1966-03-24 1968-02-20 Avgerinos Encoding keyboard
US3465099A (en) * 1967-09-05 1969-09-02 Friden Inc Optical encoder

Also Published As

Publication number Publication date
JPS5632645B2 (sv) 1981-07-29
JPS5030425A (sv) 1975-03-26
DE2415702A1 (de) 1974-10-17
CA1005348A (en) 1977-02-15
GB1461637A (en) 1977-01-13
US3818485A (en) 1974-06-18

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