DE69026420T2 - FM-Demodulator - Google Patents
FM-DemodulatorInfo
- Publication number
- DE69026420T2 DE69026420T2 DE69026420T DE69026420T DE69026420T2 DE 69026420 T2 DE69026420 T2 DE 69026420T2 DE 69026420 T DE69026420 T DE 69026420T DE 69026420 T DE69026420 T DE 69026420T DE 69026420 T2 DE69026420 T2 DE 69026420T2
- Authority
- DE
- Germany
- Prior art keywords
- demodulator
- 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 - Fee Related
Links
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
- H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
-
- 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
- H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
- H03D3/24—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
- H03D3/241—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop
- H03D3/244—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop combined with means for obtaining automatic gain control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/83—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal
- H04N9/835—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal involving processing of the sound signal
- H04N9/8355—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal involving processing of the sound signal the sound carriers being frequency multiplexed between the luminance carrier and the chrominance carrier
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
- Stereo-Broadcasting Methods (AREA)
- Circuits Of Receivers In General (AREA)
- Superheterodyne Receivers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1122360A JPH0770925B2 (ja) | 1989-05-16 | 1989-05-16 | Fm復調回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69026420D1 DE69026420D1 (de) | 1996-05-15 |
DE69026420T2 true DE69026420T2 (de) | 1996-09-26 |
Family
ID=14833967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69026420T Expired - Fee Related DE69026420T2 (de) | 1989-05-16 | 1990-05-15 | FM-Demodulator |
Country Status (6)
Country | Link |
---|---|
US (1) | US5017841A (de) |
EP (1) | EP0398254B1 (de) |
JP (1) | JPH0770925B2 (de) |
KR (1) | KR0147052B1 (de) |
CA (1) | CA2016793C (de) |
DE (1) | DE69026420T2 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02305087A (ja) * | 1989-05-18 | 1990-12-18 | Sony Corp | Fm検波器 |
GB9320068D0 (en) * | 1993-09-29 | 1993-11-17 | Sgs Thomson Microelectronics | Demodulation of fm audio carrier |
TW257917B (en) * | 1994-04-12 | 1995-09-21 | Philips Electronics Nv | Receiver comprising a pulse count FM demodulator, and pulse count FM demodulator |
US5918167A (en) * | 1997-03-11 | 1999-06-29 | Northern Telecom Limited | Quadrature downconverter local oscillator leakage canceller |
KR100272763B1 (ko) * | 1997-08-04 | 2000-11-15 | 권성우 | 고주파 직변환 수신장치 |
FR2767977A1 (fr) * | 1997-08-27 | 1999-02-26 | Philips Electronics Nv | Etage de sortie pour pompe de charge faible courant et demodulateur integrant une telle pompe de charge |
US5945854A (en) * | 1998-02-10 | 1999-08-31 | Ericsson Inc. | Phase locked loops including input amplitude control |
US7405613B2 (en) * | 2005-04-06 | 2008-07-29 | Integration Associates Inc. | Differential slope demodulator for low-IF frequencies |
US7689189B2 (en) * | 2005-04-06 | 2010-03-30 | Silicon Laboratories Inc. | Circuit and method for signal reception using a low intermediate frequency reception |
EP1959562B1 (de) * | 2007-02-15 | 2010-12-08 | STMicroelectronics Srl | Volldifferentieller Demodulator mit variabler Verstärkung und Demodulationsverfahren eines Signals |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1122110B (de) * | 1958-03-20 | 1962-01-18 | Nippon Electric Co | Empfangssystem fuer frequenz- oder phasenmodulierte Schwingungen |
US3346815A (en) * | 1964-05-21 | 1967-10-10 | Hughes Aircraft Co | Fm demodulator system with improved sensitivity |
FR2481549A1 (fr) * | 1980-04-25 | 1981-10-30 | Thomson Brandt | Dispositif de synthese et de demodulation combinees pour recepteurs d'ondes modulees en frequence et recepteur le comportant |
US4606075A (en) * | 1983-09-21 | 1986-08-12 | Motorola, Inc. | Automatic gain control responsive to coherent and incoherent signals |
FR2564663B1 (fr) * | 1984-05-15 | 1986-09-19 | Radiotechnique | Demodulateur de frequence a largeur de bande ajustable |
NL8601844A (nl) * | 1986-07-15 | 1988-02-01 | Philips Nv | Demodulatorschakeling. |
JPS6358602A (ja) * | 1986-08-28 | 1988-03-14 | Toshiba Corp | 深層記録信号再生出力回路 |
US4992747A (en) * | 1988-08-16 | 1991-02-12 | Myers Glen A | Multiple reuse of an FM band |
-
1989
- 1989-05-16 JP JP1122360A patent/JPH0770925B2/ja not_active Expired - Lifetime
-
1990
- 1990-05-14 US US07/522,937 patent/US5017841A/en not_active Expired - Lifetime
- 1990-05-15 EP EP90109146A patent/EP0398254B1/de not_active Expired - Lifetime
- 1990-05-15 CA CA002016793A patent/CA2016793C/en not_active Expired - Fee Related
- 1990-05-15 KR KR1019900006925A patent/KR0147052B1/ko not_active IP Right Cessation
- 1990-05-15 DE DE69026420T patent/DE69026420T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH02301304A (ja) | 1990-12-13 |
CA2016793A1 (en) | 1990-11-16 |
EP0398254A2 (de) | 1990-11-22 |
CA2016793C (en) | 1999-12-14 |
DE69026420D1 (de) | 1996-05-15 |
KR900019339A (ko) | 1990-12-24 |
EP0398254A3 (de) | 1991-09-11 |
EP0398254B1 (de) | 1996-04-10 |
JPH0770925B2 (ja) | 1995-07-31 |
KR0147052B1 (ko) | 1998-12-01 |
US5017841A (en) | 1991-05-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |