JPS57191733A - Key input device - Google Patents

Key input device

Info

Publication number
JPS57191733A
JPS57191733A JP56074921A JP7492181A JPS57191733A JP S57191733 A JPS57191733 A JP S57191733A JP 56074921 A JP56074921 A JP 56074921A JP 7492181 A JP7492181 A JP 7492181A JP S57191733 A JPS57191733 A JP S57191733A
Authority
JP
Japan
Prior art keywords
typamatic
key
keys
depression
depressed
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.)
Pending
Application number
JP56074921A
Other languages
Japanese (ja)
Inventor
Katsuhiro Kurasawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56074921A priority Critical patent/JPS57191733A/en
Publication of JPS57191733A publication Critical patent/JPS57191733A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • B41J5/28—Multiple-action keys, e.g. keys depressed by two or more amounts or movable in two or more directions to effect different functions or selections

Landscapes

  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE:To prevent the transmission of erroneous information, by stopping the typamatic function for double depression of typamatic keys. CONSTITUTION:Typamatic keys having a repeat function by which information is transmitted repeatedly at a constant period for a certain time when these keys are depressed are provided in a key input device. Only an FF 11 is set by a depression signal (a) of a typamatic key A and a strobe signal (d) generated by this depression signal, and a typamatic oscillating circuit 4 starts oscillation. Next, when a typamatic key B is depressed, an FF 12 is set by the strobe signal (d), and the input of the typamatic oscillating circuit 4 is closed, and the oscillation is stopped. That is, if another key A is operated already when the typamatic key B is depressed, the typamatic operation due to the key B is stopped. Consequently, erroneous information for double depression of typamatic keys is prevented from being transmitted.
JP56074921A 1981-05-20 1981-05-20 Key input device Pending JPS57191733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56074921A JPS57191733A (en) 1981-05-20 1981-05-20 Key input device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56074921A JPS57191733A (en) 1981-05-20 1981-05-20 Key input device

Publications (1)

Publication Number Publication Date
JPS57191733A true JPS57191733A (en) 1982-11-25

Family

ID=13561318

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56074921A Pending JPS57191733A (en) 1981-05-20 1981-05-20 Key input device

Country Status (1)

Country Link
JP (1) JPS57191733A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50117318A (en) * 1974-02-28 1975-09-13
JPS5160113A (en) * 1974-10-22 1976-05-25 Casio Computer Co Ltd
JPS554694A (en) * 1979-05-10 1980-01-14 Canon Inc Electronic apparatus
JPS5535630B2 (en) * 1976-03-05 1980-09-16

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50117318A (en) * 1974-02-28 1975-09-13
JPS5160113A (en) * 1974-10-22 1976-05-25 Casio Computer Co Ltd
JPS5535630B2 (en) * 1976-03-05 1980-09-16
JPS554694A (en) * 1979-05-10 1980-01-14 Canon Inc Electronic apparatus

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