JPS635940B2 - - Google Patents

Info

Publication number
JPS635940B2
JPS635940B2 JP53161192A JP16119278A JPS635940B2 JP S635940 B2 JPS635940 B2 JP S635940B2 JP 53161192 A JP53161192 A JP 53161192A JP 16119278 A JP16119278 A JP 16119278A JP S635940 B2 JPS635940 B2 JP S635940B2
Authority
JP
Japan
Prior art keywords
voltage
output
input signal
frequency
input
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
JP53161192A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5590164A (en
Inventor
Akira Igarashi
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.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai Kogyo 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 Nohmi Bosai Kogyo Co Ltd filed Critical Nohmi Bosai Kogyo Co Ltd
Priority to JP16119278A priority Critical patent/JPS5590164A/ja
Publication of JPS5590164A publication Critical patent/JPS5590164A/ja
Publication of JPS635940B2 publication Critical patent/JPS635940B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/10Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14Demodulator circuits; Receiver circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
JP16119278A 1978-12-28 1978-12-28 Malfunction preventive unit of fsk receiver of carrier telegraph unit Granted JPS5590164A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16119278A JPS5590164A (en) 1978-12-28 1978-12-28 Malfunction preventive unit of fsk receiver of carrier telegraph unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16119278A JPS5590164A (en) 1978-12-28 1978-12-28 Malfunction preventive unit of fsk receiver of carrier telegraph unit

Publications (2)

Publication Number Publication Date
JPS5590164A JPS5590164A (en) 1980-07-08
JPS635940B2 true JPS635940B2 (enrdf_load_stackoverflow) 1988-02-05

Family

ID=15730327

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16119278A Granted JPS5590164A (en) 1978-12-28 1978-12-28 Malfunction preventive unit of fsk receiver of carrier telegraph unit

Country Status (1)

Country Link
JP (1) JPS5590164A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62298256A (ja) * 1986-06-18 1987-12-25 Nec Corp 周波数偏移変調信号の受信装置

Also Published As

Publication number Publication date
JPS5590164A (en) 1980-07-08

Similar Documents

Publication Publication Date Title
JP3793243B2 (ja) 直接変換受信機
US3714595A (en) Demodulator using a phase locked loop
CA2014916C (en) Direct conversion receiver with dithering local carrier frequency for detecting transmitted carrier frequency
US4575761A (en) AFT arrangement for a double conversion tuner
JPH07154287A (ja) 直接変換受信機
JP2729028B2 (ja) Fm搬送波の復調方法および復調回路
JPH0548483A (ja) 周波数変換回路
US4669094A (en) FSK data receiver
JP2732803B2 (ja) 入力fm信号からオーディオ信号を作成する方法およびその復調回路
US7038507B2 (en) Frequency synthesizer having PLL with an analog phase detector
US3544899A (en) Frequency-modulated receiver with decreased threshold level
US4801896A (en) Circuit providing improved lock-in for a phase-locked loop
JPS5919652B2 (ja) コヒ−レント周波数ダイバ−シチ受信方式
US3991378A (en) Electronic phaselock circuitry
US4426627A (en) Phase-locked loop oscillator circuit utilizing a sub-loop with a second phase comparator
JPS635940B2 (enrdf_load_stackoverflow)
US4023115A (en) Means for controlling the phase or frequency output of an oscillator in a loop circuit
US4596955A (en) Phase-locked loop and device for demodulating frequency modulated signals, comprising such a loop
US4796102A (en) Automatic frequency control system
US4086593A (en) AM removal and phaselock receiver
JP2550701B2 (ja) Fsk受信機
JPH04363903A (ja) 位相ループ付き復調装置
JP2516972Y2 (ja) 位相同期型発振器
JPS6032370B2 (ja) Pllシンセサイザ方式の無線機器
JP2564615B2 (ja) Fm受信機の雑音除去装置