JPS56156028A - Carrier detecting circuit - Google Patents

Carrier detecting circuit

Info

Publication number
JPS56156028A
JPS56156028A JP5983180A JP5983180A JPS56156028A JP S56156028 A JPS56156028 A JP S56156028A JP 5983180 A JP5983180 A JP 5983180A JP 5983180 A JP5983180 A JP 5983180A JP S56156028 A JPS56156028 A JP S56156028A
Authority
JP
Japan
Prior art keywords
noise
carrier
received
detecting circuit
waveform
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
JP5983180A
Other languages
Japanese (ja)
Other versions
JPS6234184B2 (en
Inventor
Kenji Nonaka
Kiyoshi Takeda
Yusaku Yamada
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP5983180A priority Critical patent/JPS56156028A/en
Publication of JPS56156028A publication Critical patent/JPS56156028A/en
Publication of JPS6234184B2 publication Critical patent/JPS6234184B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/76—Wired systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To prevent a malfunction of telemeter system caused by a noise output, by providing another rectifying circuit in addition to the conventional rectifying circuit and securing an assured extraction of only the carrier component although a noise is given through a transmission line. CONSTITUTION:A carrier 17 is received and receives a peak wave detection as shown by the figures 23 and 26 through the 1st and 2nd rectifying circuits 7 and 15 equivalent to the conventional rectifying circuits, and the synthesized value turns into a waveform 20. However, a waveform 21 is obtained in that case if no carrier is received but a noise is received. The value is selected properly for the resistances 4 and 11, and thus the noise detected by a voltage detecting circuit 8 can be turned into zero at an output terminal 10 as shown by 28. Then only the carrier component 29 can be delivered assuredly through the terminal 10.
JP5983180A 1980-05-06 1980-05-06 Carrier detecting circuit Granted JPS56156028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5983180A JPS56156028A (en) 1980-05-06 1980-05-06 Carrier detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5983180A JPS56156028A (en) 1980-05-06 1980-05-06 Carrier detecting circuit

Publications (2)

Publication Number Publication Date
JPS56156028A true JPS56156028A (en) 1981-12-02
JPS6234184B2 JPS6234184B2 (en) 1987-07-24

Family

ID=13124556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5983180A Granted JPS56156028A (en) 1980-05-06 1980-05-06 Carrier detecting circuit

Country Status (1)

Country Link
JP (1) JPS56156028A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5530242A (en) * 1978-08-25 1980-03-04 Sony Corp Fm receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5530242A (en) * 1978-08-25 1980-03-04 Sony Corp Fm receiver

Also Published As

Publication number Publication date
JPS6234184B2 (en) 1987-07-24

Similar Documents

Publication Publication Date Title
JPS56109023A (en) Channel selection system
DE3572099D1 (en) Circuit for producing a criterion for reception
JPS5748845A (en) Data signal detecting circuit
JPS56156028A (en) Carrier detecting circuit
JPS5776960A (en) Receiver
EP0150564A3 (en) Electronic device comprising a heterojunction
JPS54104220A (en) Pulse extraction circuit
JPS56156091A (en) Remote control method
JPS55153457A (en) Data signal reproducing unit
JPS6444644A (en) Data controller for rds receiver
JPS5720845A (en) Data protecting system
JPS5717236A (en) Detector for synchronism
JPS5399716A (en) Clamp circuit
JPS5681429A (en) Detecting circuit
JPS5636204A (en) Noise erasing unit
JPS57192875A (en) Detecting device for quantity of electricity
JPS52133235A (en) Judging circuit
JPS641348A (en) Transmitter-receiver
JPS5286545A (en) Finish detection system in electronic range
JPS5553919A (en) Variation detecting circuit
JPS5478423A (en) Voltage detection circuit
JPS5689002A (en) Pattern detecting method
JPS54133020A (en) Initial connection unit in tdma satellite communication
JPS55104193A (en) Decoder circuit for radio operation unit receiver
JPS54121611A (en) Noise eliminating circuit