JPS55147731A - Electronic switch detecting depressed position - Google Patents

Electronic switch detecting depressed position

Info

Publication number
JPS55147731A
JPS55147731A JP5551879A JP5551879A JPS55147731A JP S55147731 A JPS55147731 A JP S55147731A JP 5551879 A JP5551879 A JP 5551879A JP 5551879 A JP5551879 A JP 5551879A JP S55147731 A JPS55147731 A JP S55147731A
Authority
JP
Japan
Prior art keywords
depressed
key top
depressed position
pressure sensing
position information
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
JP5551879A
Other languages
Japanese (ja)
Inventor
Hideaki Miyagawa
Masakazu Ozawa
Makoto Higomura
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 JP5551879A priority Critical patent/JPS55147731A/en
Publication of JPS55147731A publication Critical patent/JPS55147731A/en
Pending legal-status Critical Current

Links

Landscapes

  • Input From Keyboards Or The Like (AREA)
  • Push-Button Switches (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE: To enable to judge the depressed position surely, by using a few pressure sensing elements, by comparing the coordinate of the depressed position obtained through the operation of the partial press signal of the pressure sensing element depressed with the position information located on the key top position information memory.
CONSTITUTION: A plurality of key tops 2 are displayed on the keyboard panel 1, and the pressure sensing elements DET1, 2, 3 are provided on different position under this panel 1. When an arbitrary key top 2 is depressed, the partial pressure signal produced to the elements DET1, 2, 3 is respectively amplified AMP1, 2, 3 and fed to the operation circuit OP after A/D conversion. Futher, the coordinate of the depressed position is operated at the circuit OP, this operation output and the key top position information stored in the key top position information memory MK are compered, and the depressed position is judged by it. Accordingly, it is not necessary to correspond the key top 2 and the element 3 by one to one, and the depressed position can surely be judged by using a few pressure sensing elements.
COPYRIGHT: (C)1980,JPO&Japio
JP5551879A 1979-05-07 1979-05-07 Electronic switch detecting depressed position Pending JPS55147731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5551879A JPS55147731A (en) 1979-05-07 1979-05-07 Electronic switch detecting depressed position

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5551879A JPS55147731A (en) 1979-05-07 1979-05-07 Electronic switch detecting depressed position

Publications (1)

Publication Number Publication Date
JPS55147731A true JPS55147731A (en) 1980-11-17

Family

ID=13000913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5551879A Pending JPS55147731A (en) 1979-05-07 1979-05-07 Electronic switch detecting depressed position

Country Status (1)

Country Link
JP (1) JPS55147731A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6030037U (en) * 1983-08-02 1985-02-28 アルプス電気株式会社 X-Y direction input device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4849332A (en) * 1971-10-21 1973-07-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4849332A (en) * 1971-10-21 1973-07-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6030037U (en) * 1983-08-02 1985-02-28 アルプス電気株式会社 X-Y direction input device

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