JPS5528622A - Reception circuit for infrared ray remote control - Google Patents

Reception circuit for infrared ray remote control

Info

Publication number
JPS5528622A
JPS5528622A JP10178678A JP10178678A JPS5528622A JP S5528622 A JPS5528622 A JP S5528622A JP 10178678 A JP10178678 A JP 10178678A JP 10178678 A JP10178678 A JP 10178678A JP S5528622 A JPS5528622 A JP S5528622A
Authority
JP
Japan
Prior art keywords
noise
remote control
infrared ray
circuit
signal
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
JP10178678A
Other languages
Japanese (ja)
Inventor
Teisho Fujiyama
Isao Fukushima
Fumio Shiina
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 JP10178678A priority Critical patent/JPS5528622A/en
Publication of JPS5528622A publication Critical patent/JPS5528622A/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
    • G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Selective Calling Equipment (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To prevent the malfunction due to noise by using the integration circuit and the wave shape circuit in the infrared ray remote control reception circuit processing the signal in photo electric conversion with the infrared ray sensing element. CONSTITUTION:Infrared ray remote control signal is detected with the photo diode 1 and it is inputted to the noise rejection circuit 4 via the amplifier 2 and the detector 3. The capacitor 48 is charged up with the transistors 41 and 42 when remote control signal or noise is present and discharged when neither present. Since the pulse width of noise is narrower than the pulse width of signal, the data processing circuit 5 is not subject to the malfunction due to the effect of noise by suitably setting the threshold value of the wave shape circuit 9, to perform accurate operation.
JP10178678A 1978-08-23 1978-08-23 Reception circuit for infrared ray remote control Pending JPS5528622A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10178678A JPS5528622A (en) 1978-08-23 1978-08-23 Reception circuit for infrared ray remote control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10178678A JPS5528622A (en) 1978-08-23 1978-08-23 Reception circuit for infrared ray remote control

Publications (1)

Publication Number Publication Date
JPS5528622A true JPS5528622A (en) 1980-02-29

Family

ID=14309855

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10178678A Pending JPS5528622A (en) 1978-08-23 1978-08-23 Reception circuit for infrared ray remote control

Country Status (1)

Country Link
JP (1) JPS5528622A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58162189A (en) * 1982-03-19 1983-09-26 Victor Co Of Japan Ltd Remote control receiver
JPS59149492A (en) * 1983-02-15 1984-08-27 Matsushita Seiko Co Ltd Receiving method of ultrasonic type remote controller

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922951U (en) * 1972-05-29 1974-02-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922951U (en) * 1972-05-29 1974-02-26

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58162189A (en) * 1982-03-19 1983-09-26 Victor Co Of Japan Ltd Remote control receiver
JPS59149492A (en) * 1983-02-15 1984-08-27 Matsushita Seiko Co Ltd Receiving method of ultrasonic type remote controller

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