JPS57114932A - Input deivce - Google Patents

Input deivce

Info

Publication number
JPS57114932A
JPS57114932A JP56001337A JP133781A JPS57114932A JP S57114932 A JPS57114932 A JP S57114932A JP 56001337 A JP56001337 A JP 56001337A JP 133781 A JP133781 A JP 133781A JP S57114932 A JPS57114932 A JP S57114932A
Authority
JP
Japan
Prior art keywords
keyboard
light
sheets
photodetector
notches
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
JP56001337A
Other languages
Japanese (ja)
Inventor
Tsutomu Okuyama
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP56001337A priority Critical patent/JPS57114932A/en
Publication of JPS57114932A publication Critical patent/JPS57114932A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
    • H03K17/943—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector using a plurality of optical emitters or detectors, e.g. keyboard

Landscapes

  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE:To achieve the switching of input modes from a keyboard or the like automatically, by foring a reflecting plane with different position at each back side of a plurality of data sheets, reflecting the light from a light source and radiating a photo detector. CONSTITUTION:A keyboard 4 is formed to an upper case 2 of a desk top electronic calculator 1, and a number of key tops 5 are projected from the keyboard 4. A groove 7 is made to the keyboard 4 and a radiation lamp 17 and a photo detector 18 are contained in the groove 7. The case main body is fitted with data sheets 9a-9e freely switchingly and notches 9a'-9d' are provided with them. The opening of the notches is stepwise smaller from the sheet 9a-9d. Reflection pieces 13a-13e are sticked to the exposing section at the back of the sheets 9a-9e, the light from the lamp 17 is reflected and radiated to the photodetector 18. The photodetector 18 determines the current value according to the amount of radiation, discriminates the input mode of the data sheet in use at present and calls out the corresponding memory content.
JP56001337A 1981-01-07 1981-01-07 Input deivce Pending JPS57114932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56001337A JPS57114932A (en) 1981-01-07 1981-01-07 Input deivce

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56001337A JPS57114932A (en) 1981-01-07 1981-01-07 Input deivce

Publications (1)

Publication Number Publication Date
JPS57114932A true JPS57114932A (en) 1982-07-17

Family

ID=11498680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56001337A Pending JPS57114932A (en) 1981-01-07 1981-01-07 Input deivce

Country Status (1)

Country Link
JP (1) JPS57114932A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007085792A (en) * 2005-09-20 2007-04-05 Kaitokui Denshi Kogyo Kofun Yugenkoshi Optical module for page recognition of electronic book

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007085792A (en) * 2005-09-20 2007-04-05 Kaitokui Denshi Kogyo Kofun Yugenkoshi Optical module for page recognition of electronic book
JP4499638B2 (en) * 2005-09-20 2010-07-07 海徳威電子工業股▲ふん▼有限公司 Optical module for e-book page recognition

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