JPS53141504A - Detection system for proximate object - Google Patents

Detection system for proximate object

Info

Publication number
JPS53141504A
JPS53141504A JP5684877A JP5684877A JPS53141504A JP S53141504 A JPS53141504 A JP S53141504A JP 5684877 A JP5684877 A JP 5684877A JP 5684877 A JP5684877 A JP 5684877A JP S53141504 A JPS53141504 A JP S53141504A
Authority
JP
Japan
Prior art keywords
detection system
proximate object
facilitay
capacitor
eliminate
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.)
Granted
Application number
JP5684877A
Other languages
Japanese (ja)
Other versions
JPS6013525B2 (en
Inventor
Keiji Nagae
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP52056848A priority Critical patent/JPS6013525B2/en
Publication of JPS53141504A publication Critical patent/JPS53141504A/en
Publication of JPS6013525B2 publication Critical patent/JPS6013525B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Geophysics And Detection Of Objects (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Electronic Switches (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE: To eliminate the needs for a special holding circuit and facilitay and display parts by detecting and holding the variation in frequency owing to the approach of a human body, etc., with the use of a liquid-crystal element as an oscillation frequency deciding capacitor.
COPYRIGHT: (C)1978,JPO&Japio
JP52056848A 1977-05-17 1977-05-17 Proximity detection device Expired JPS6013525B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52056848A JPS6013525B2 (en) 1977-05-17 1977-05-17 Proximity detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52056848A JPS6013525B2 (en) 1977-05-17 1977-05-17 Proximity detection device

Publications (2)

Publication Number Publication Date
JPS53141504A true JPS53141504A (en) 1978-12-09
JPS6013525B2 JPS6013525B2 (en) 1985-04-08

Family

ID=13038827

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52056848A Expired JPS6013525B2 (en) 1977-05-17 1977-05-17 Proximity detection device

Country Status (1)

Country Link
JP (1) JPS6013525B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5889737A (en) * 1981-11-16 1983-05-28 イギリス国 Finger contact sensitive switch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0318511U (en) * 1989-07-03 1991-02-22

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5889737A (en) * 1981-11-16 1983-05-28 イギリス国 Finger contact sensitive switch

Also Published As

Publication number Publication date
JPS6013525B2 (en) 1985-04-08

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