DE3469659D1 - Demodulation circuit from fm signals and demodulation system therefor - Google Patents

Demodulation circuit from fm signals and demodulation system therefor

Info

Publication number: DE3469659D1
Authority: DE; Germany
Prior art keywords: demodulation; signals; system therefor; circuit; demodulation circuit
Prior art date: 1983-07-22
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

DE8484304965T

Other languages

English (en)

Inventor

Tomozo Ohta

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.)

Sharp Corp

Original Assignee

Sharp 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.)

1983-07-22

Filing date

1984-07-20

Publication date

1988-04-07

1983-07-22 Priority claimed from JP13498383A external-priority patent/JPS6027208A/ja

1983-07-22 Priority claimed from JP13498283A external-priority patent/JPS6027207A/ja

1984-07-20 Application filed by Sharp Corp filed Critical Sharp Corp

1988-04-07 Application granted granted Critical

1988-04-07 Publication of DE3469659D1 publication Critical patent/DE3469659D1/de

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
- H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
- H03D3/005—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling a bandpass filter

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Processing Of Color Television Signals (AREA)
Color Television Systems (AREA)

DE8484304965T 1983-07-22 1984-07-20 Demodulation circuit from fm signals and demodulation system therefor Expired DE3469659D1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP13498383A JPS6027208A (ja)	1983-07-22	1983-07-22	周波数変調信号の復調方式
JP13498283A JPS6027207A (ja)	1983-07-22	1983-07-22	周波数変調信号の復調方式

Publications (1)

Publication Number	Publication Date
DE3469659D1 true DE3469659D1 (en)	1988-04-07

Family

ID=26468952

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8484304965T Expired DE3469659D1 (en)	1983-07-22	1984-07-20	Demodulation circuit from fm signals and demodulation system therefor

Country Status (5)

Country	Link
US (1)	US4594556A (de)
EP (1)	EP0135301B1 (de)
AU (1)	AU552117B2 (de)
CA (1)	CA1223926A (de)
DE (1)	DE3469659D1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4698598A (en) *	1986-08-04	1987-10-06	Scientific Atlanta, Inc.	FM demodulator system with threshold extension
JPH06216655A (ja) *	1993-01-13	1994-08-05	Nec Corp	復調回路
ES2151547T3 (es) *	1994-01-12	2001-01-01	Rca Thomson Licensing Corp	Filtro de bucle de fase digital de orden superior.
CN1123182C (zh) *	1994-01-12	2003-10-01	Rca·汤姆森许可公司	高阶数字相位环路滤波器
US5543627A (en) *	1994-09-23	1996-08-06	The Boeing Company	Method for maximizing the solar cell OPTO-electronic conversion efficiency in optically controlled hydraulic actuators
US5691666A (en) *	1995-06-07	1997-11-25	Owen; Joseph C.	Full threshold FM deviation compression feedback demodulator and method
SE506847C2 (sv) *	1996-06-28	1998-02-16	Ericsson Telefon Ab L M	Förfarande och anordning vid fasmodulerade signaler

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5325446B2 (de) *	1972-11-13	1978-07-27
US4101837A (en) *	1977-05-11	1978-07-18	Scientific-Atlanta, Inc.	Threshold extension fm demodulator apparatus for wide band width fm signals
JPS5537031A (en) *	1978-09-07	1980-03-14	Trio Kenwood Corp	Phase synchronizing circuit
FR2490427B1 (fr) *	1980-09-16	1986-04-18	Thomson Csf	Demodulateur d'un signal module en frequence et systeme de television comportant un tel demodulateur
CA1190289A (en) *	1981-04-28	1985-07-09	Nippon Hoso Kyokai	Fm signal demodulation system

1984
- 1984-07-18 US US06/632,105 patent/US4594556A/en not_active Expired - Lifetime
- 1984-07-19 CA CA000459235A patent/CA1223926A/en not_active Expired
- 1984-07-20 DE DE8484304965T patent/DE3469659D1/de not_active Expired
- 1984-07-20 AU AU30888/84A patent/AU552117B2/en not_active Ceased
- 1984-07-20 EP EP84304965A patent/EP0135301B1/de not_active Expired

Also Published As

Publication number	Publication date
AU552117B2 (en)	1986-05-22
EP0135301A1 (de)	1985-03-27
AU3088884A (en)	1985-01-24
EP0135301B1 (de)	1988-03-02
US4594556A (en)	1986-06-10
CA1223926A (en)	1987-07-07

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Legal Events

Date	Code	Title	Description
1989-03-30	8364	No opposition during term of opposition
1997-03-20	8328	Change in the person/name/address of the agent	Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN
2004-06-09	8339	Ceased/non-payment of the annual fee