JPH0160845B2 - - Google Patents

Info

Publication number
JPH0160845B2
JPH0160845B2 JP2891983A JP2891983A JPH0160845B2 JP H0160845 B2 JPH0160845 B2 JP H0160845B2 JP 2891983 A JP2891983 A JP 2891983A JP 2891983 A JP2891983 A JP 2891983A JP H0160845 B2 JPH0160845 B2 JP H0160845B2
Authority
JP
Japan
Prior art keywords
ultrasonic
ceiling
pipe
remote control
microphone
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
JP2891983A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59154509A (ja
Inventor
Hirotoshi Kawaguchi
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.)
Panasonic Ecology Systems Co Ltd
Original Assignee
Matsushita Seiko Co 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 Matsushita Seiko Co Ltd filed Critical Matsushita Seiko Co Ltd
Priority to JP2891983A priority Critical patent/JPS59154509A/ja
Publication of JPS59154509A publication Critical patent/JPS59154509A/ja
Publication of JPH0160845B2 publication Critical patent/JPH0160845B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/02—Non-electrical signal transmission systems, e.g. optical systems using infrasonic, sonic or ultrasonic waves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
JP2891983A 1983-02-23 1983-02-23 超音波ワイヤレスリモ−トコントロ−ル装置 Granted JPS59154509A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2891983A JPS59154509A (ja) 1983-02-23 1983-02-23 超音波ワイヤレスリモ−トコントロ−ル装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2891983A JPS59154509A (ja) 1983-02-23 1983-02-23 超音波ワイヤレスリモ−トコントロ−ル装置

Publications (2)

Publication Number Publication Date
JPS59154509A JPS59154509A (ja) 1984-09-03
JPH0160845B2 true JPH0160845B2 (enExample) 1989-12-26

Family

ID=12261806

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2891983A Granted JPS59154509A (ja) 1983-02-23 1983-02-23 超音波ワイヤレスリモ−トコントロ−ル装置

Country Status (1)

Country Link
JP (1) JPS59154509A (enExample)

Also Published As

Publication number Publication date
JPS59154509A (ja) 1984-09-03

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