JPS555528A - Remote control unit - Google Patents

Remote control unit

Info

Publication number
JPS555528A
JPS555528A JP7815578A JP7815578A JPS555528A JP S555528 A JPS555528 A JP S555528A JP 7815578 A JP7815578 A JP 7815578A JP 7815578 A JP7815578 A JP 7815578A JP S555528 A JPS555528 A JP S555528A
Authority
JP
Japan
Prior art keywords
signal
control
modulation
noise
ultrasonic
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
JP7815578A
Other languages
Japanese (ja)
Inventor
Mikio Nozu
Isao Shinoda
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7815578A priority Critical patent/JPS555528A/en
Publication of JPS555528A publication Critical patent/JPS555528A/en
Pending 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)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To avoid malfunction even with the control operation under the atomosphere of ultrasonic noise, by using the FSK modulation signal as the control signal. CONSTITUTION:External incoming signal is received with the microphone 10, and amplified 11, then the ultrasonic wave frequency component f1 is selectively isolated to detect 12 the modulation waveform, and only the fundamental low frequency component f1 is filtered 13. The gate signal caused by taking this selected output as a reference is taken AND 15 with the clock of the clock pulse generating circuit 14. The clocks are gated and counted, parallel output is obtained with separation and discrimination 16 every modulation frequency to control the operation of a plurality of driving circuits. The external incoming signal is modulated with the ultrasonic frequency components f1 and f2, and f2 can eliminate the reflection and the interferrence noise. Accordingly, among the modulation frequencies of 10 to 60 Hz, a plurality of frequencies can be used, then the control for about ten functions is possible to a single carrier. This constitution can perform stable control operation under ultrasonic wave noise atomosphere and inoperation due to the beat between the reflection waves and the normal signal waves, is not caused.
JP7815578A 1978-06-27 1978-06-27 Remote control unit Pending JPS555528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7815578A JPS555528A (en) 1978-06-27 1978-06-27 Remote control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7815578A JPS555528A (en) 1978-06-27 1978-06-27 Remote control unit

Publications (1)

Publication Number Publication Date
JPS555528A true JPS555528A (en) 1980-01-16

Family

ID=13654016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7815578A Pending JPS555528A (en) 1978-06-27 1978-06-27 Remote control unit

Country Status (1)

Country Link
JP (1) JPS555528A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49129082A (en) * 1973-04-20 1974-12-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49129082A (en) * 1973-04-20 1974-12-10

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