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GB1345328A - Push-button keyboard apparatus - Google Patents

Push-button keyboard apparatus

Info

Publication number
GB1345328A
GB1345328A GB1345328DA GB1345328A GB 1345328 A GB1345328 A GB 1345328A GB 1345328D A GB1345328D A GB 1345328DA GB 1345328 A GB1345328 A GB 1345328A
Authority
GB
United Kingdom
Prior art keywords
buttons
button
numeral
symbols
extra
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
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Publication of GB1345328A publication Critical patent/GB1345328A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

1345328 Automatic exchange equipment; number sending devices GENERAL ELECTRIC CO Ltd 14 Dec 1971 [14 Dec 1970] 59216/70 Heading H4K A push button telephone set having 10 numeral buttons and two extra buttons is used for data signalling by having each numeral button associated also with three-non-numerical symbols which can be selected for transmission by operating one or both of the extra buttons prior to operation of the numeral button. The extra buttons are visually marked so that it is clear which should be operated to transmit a particular symbol. As shown the button 11 only allows the contents of the bottom row of the numeral buttons to subsequently be sent and button 12 selects the right hand column symbols for transmission. An additional two symbols can be obtained on buttons 11 and 12, Fig. 2, (not shown). The set transmits the data as two voice frequency tones in a one out of four code for each, so explained in Specification 854,375. The keyboard includes the mechanism disclosed in Specification 1,124,535.
GB1345328D 1971-12-14 1971-12-14 Push-button keyboard apparatus Expired GB1345328A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5921670 1971-12-14

Publications (1)

Publication Number Publication Date
GB1345328A true GB1345328A (en) 1974-01-30

Family

ID=10483307

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1345328D Expired GB1345328A (en) 1971-12-14 1971-12-14 Push-button keyboard apparatus

Country Status (1)

Country Link
GB (1) GB1345328A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147769A (en) * 1983-10-08 1985-05-15 Hashimoto Corp Information transmission/reception system using pushphone and information reception apparatus
US4532378A (en) * 1981-05-28 1985-07-30 Tokyo Shibaura Denki Kabushiki Kaisha Telephone apparatus capable of inputting character data
US4567326A (en) * 1981-05-28 1986-01-28 Tokyo Shibaura Denki Kabushiki Kaisha Telephone apparatus for selective operation in a normal and repertory dial mode
GB2178927A (en) * 1985-07-09 1987-02-18 Canon Kk Alphanumeric character transmission

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4532378A (en) * 1981-05-28 1985-07-30 Tokyo Shibaura Denki Kabushiki Kaisha Telephone apparatus capable of inputting character data
US4567326A (en) * 1981-05-28 1986-01-28 Tokyo Shibaura Denki Kabushiki Kaisha Telephone apparatus for selective operation in a normal and repertory dial mode
GB2147769A (en) * 1983-10-08 1985-05-15 Hashimoto Corp Information transmission/reception system using pushphone and information reception apparatus
GB2178927A (en) * 1985-07-09 1987-02-18 Canon Kk Alphanumeric character transmission
GB2178927B (en) * 1985-07-09 1990-02-21 Canon Kk Communication apparatus

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees