HK39793A - Demodulator for ditital fm signals - Google Patents

Demodulator for ditital fm signals

Info

Publication number
HK39793A
HK39793A HK397/93A HK39793A HK39793A HK 39793 A HK39793 A HK 39793A HK 397/93 A HK397/93 A HK 397/93A HK 39793 A HK39793 A HK 39793A HK 39793 A HK39793 A HK 39793A
Authority
HK
Hong Kong
Prior art keywords
ditital
demodulator
signals
Prior art date
Application number
HK397/93A
Other languages
English (en)
Inventor
Yoshihiko Akaiwa
Original Assignee
Nec Corp
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
Priority claimed from JP59002901A external-priority patent/JPS60146558A/ja
Priority claimed from JP3346584A external-priority patent/JPS60210052A/ja
Application filed by Nec Corp filed Critical Nec Corp
Publication of HK39793A publication Critical patent/HK39793A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
    • H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
    • H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Superheterodyne Receivers (AREA)
HK397/93A 1984-01-11 1993-04-22 Demodulator for ditital fm signals HK39793A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59002901A JPS60146558A (ja) 1984-01-11 1984-01-11 周波数検波器
JP3346584A JPS60210052A (ja) 1984-02-24 1984-02-24 周波数検波器

Publications (1)

Publication Number Publication Date
HK39793A true HK39793A (en) 1993-04-30

Family

ID=26336385

Family Applications (1)

Application Number Title Priority Date Filing Date
HK397/93A HK39793A (en) 1984-01-11 1993-04-22 Demodulator for ditital fm signals

Country Status (7)

Country Link
US (1) US4651107A (de)
EP (1) EP0151394B1 (de)
AU (1) AU567649B2 (de)
CA (1) CA1258300A (de)
DE (1) DE3580594D1 (de)
HK (1) HK39793A (de)
SG (1) SG119492G (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2174576B (en) * 1985-04-29 1989-06-28 Plessey Co Plc Improvements in or relating to receivers
GB2193405A (en) * 1986-08-01 1988-02-03 Philips Electronic Associated Demodulating an angle-modulated signal
US5081650A (en) * 1989-07-12 1992-01-14 Matsushita Electric Industrial Co., Ltd. Data receiver
JPH0797779B2 (ja) * 1989-08-25 1995-10-18 松下電器産業株式会社 ９０度移相器とデータ受信機
US5418489A (en) * 1993-10-08 1995-05-23 Motorola, Inc. Method of recovering a frequency modulated signal
CN1087120C (zh) * 1994-11-10 2002-07-03 松下电器产业株式会社 直接变频接收机
JP2001285226A (ja) * 2000-03-31 2001-10-12 Pioneer Electronic Corp Ｆｍステレオ信号復調装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL295276A (de) * 1962-08-15
US3439283A (en) * 1966-02-04 1969-04-15 Gen Electric Frequency shift keyed discriminating circuits
JPS5820181B2 (ja) * 1974-09-25 1983-04-21 日本電気株式会社 タソウイソウドウキフクチヨウソウチ
GB2032737A (en) * 1978-10-24 1980-05-08 Standard Telephones Cables Ltd Radio receiver for tone modulated signals
GB2057820B (en) * 1979-09-04 1984-07-04 Standard Telephones Cables Ltd Radio receiver for fsk signals
GB2101821B (en) * 1981-07-16 1984-11-14 Standard Telephones Cables Ltd Radio receiver for frequency shift keyed signals
GB2106359B (en) * 1981-09-24 1985-07-03 Standard Telephones Cables Ltd Direct conversion radio receiver for fm signals
US4476585A (en) * 1982-01-25 1984-10-09 International Telephone And Telegraph Corporation Baseband demodulator for FM signals
GB2141007B (en) * 1983-06-02 1986-07-23 Standard Telephones Cables Ltd Demodulator logic for frequency shift keyed signals

Also Published As

Publication number Publication date
EP0151394A2 (de) 1985-08-14
EP0151394A3 (en) 1986-05-07
US4651107A (en) 1987-03-17
DE3580594D1 (de) 1991-01-03
EP0151394B1 (de) 1990-11-22
AU3735085A (en) 1985-07-18
AU567649B2 (en) 1987-11-26
CA1258300A (en) 1989-08-08
SG119492G (en) 1993-02-19

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)