FR2426359A1 - Procede pour diminuer l'amplitude de composante d'interference dans un signal a modulation de frequence et dispositif permettant la mise en oeuvre de ce procede - Google Patents
Procede pour diminuer l'amplitude de composante d'interference dans un signal a modulation de frequence et dispositif permettant la mise en oeuvre de ce procedeInfo
- Publication number
- FR2426359A1 FR2426359A1 FR7912482A FR7912482A FR2426359A1 FR 2426359 A1 FR2426359 A1 FR 2426359A1 FR 7912482 A FR7912482 A FR 7912482A FR 7912482 A FR7912482 A FR 7912482A FR 2426359 A1 FR2426359 A1 FR 2426359A1
- Authority
- FR
- France
- Prior art keywords
- signal
- frequency modulated
- amplitude
- decreasing
- implementation
- 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
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
-
- 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
- H04N9/7908—Suppression of interfering signals at the reproducing side, e.g. noise
-
- 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
- H04N9/7908—Suppression of interfering signals at the reproducing side, e.g. noise
- H04N9/7912—Suppression of interfering signals at the reproducing side, e.g. noise the interfering signals being intermodulation signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
- Processing Of Color Television Signals (AREA)
- Color Television Systems (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Noise Elimination (AREA)
Abstract
Procédé pour réduire l'amplitude de composantes parasites dans un signal de porteuse à modulation de fréquence qui, en guise de signal modulateur, comporte un signal de télévision complexe en couleur avec un signal de chrominance modulant un signal de porteuse auxiliaire de couleur. En plus de la modulation de fréquence, on impose au signal de porteuse une modulation de largeur d'impulsion par la composante de bande latérale inférieure de premier ordre du signal à modulation de fréquence provoquée par ledit signal de porteuse auxiliaire modulé. Application aux dispositifs d'enregistrement et/ou de reproduction de signaux vidéo.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7805232BA NL7805232A (nl) | 1978-05-16 | 1978-05-16 | Werkwijze voor het reduceren van interferentiekomponenten in een frequentiegemoduleerd signaal en inrichting voor het uitvoeren van deze werkwijze. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2426359A1 true FR2426359A1 (fr) | 1979-12-14 |
FR2426359B1 FR2426359B1 (fr) | 1985-02-15 |
Family
ID=19830837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7912482A Granted FR2426359A1 (fr) | 1978-05-16 | 1979-05-16 | Procede pour diminuer l'amplitude de composante d'interference dans un signal a modulation de frequence et dispositif permettant la mise en oeuvre de ce procede |
Country Status (20)
Country | Link |
---|---|
US (1) | US4223282A (fr) |
JP (1) | JPS54150032A (fr) |
AT (1) | AT378296B (fr) |
AU (1) | AU526081B2 (fr) |
BE (1) | BE876240A (fr) |
BR (1) | BR7902936A (fr) |
CA (1) | CA1138095A (fr) |
CH (1) | CH648968A5 (fr) |
DD (1) | DD144142A5 (fr) |
DE (1) | DE2918977C2 (fr) |
DK (1) | DK153267C (fr) |
ES (3) | ES480545A1 (fr) |
FR (1) | FR2426359A1 (fr) |
GB (1) | GB2022959B (fr) |
IT (1) | IT1113960B (fr) |
MX (1) | MX149487A (fr) |
NL (1) | NL7805232A (fr) |
NZ (1) | NZ190429A (fr) |
SE (1) | SE440435B (fr) |
ZA (1) | ZA791931B (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5971024A (ja) * | 1982-10-15 | 1984-04-21 | Olympus Optical Co Ltd | 内視鏡撮像装置 |
US4623926A (en) * | 1982-11-12 | 1986-11-18 | Matsushita Electric Industrial Co., Ltd. | Television synchronous receiver |
JPH0667205B2 (ja) * | 1983-02-04 | 1994-08-24 | 株式会社日立製作所 | Pwmパルス発生装置 |
NL8300541A (nl) * | 1983-02-14 | 1984-09-03 | Philips Nv | Werkwijze voor het koderen van een registratiesignaal, registratiedrager voorzien van een registratiesignaal dat gekodeerd is volgens de werkwijze, inrichting voor het uitvoeren van de werkwijze en inrichting voor het weergeven van een signaal dat gekodeerd is volgens de werkwijze. |
DE3853107D1 (de) * | 1987-07-21 | 1995-03-30 | Matsushita Electric Ind Co Ltd | Frequenzdemodulationsgerät. |
JPH0191304A (ja) * | 1987-10-01 | 1989-04-11 | Matsushita Electric Ind Co Ltd | 磁気記録再生装置 |
JPH0196868A (ja) * | 1987-10-08 | 1989-04-14 | Pioneer Electron Corp | 記録情報再生装置 |
US5067026A (en) * | 1988-05-06 | 1991-11-19 | Sony Corporation | Apparatus for recording and reproducing a video signal |
US4908581A (en) * | 1988-07-21 | 1990-03-13 | Matsushita Electric Industrial Co., Ltd. | Frequency demodulator having circuit cancelling undesired signal components |
JP2748464B2 (ja) * | 1988-12-13 | 1998-05-06 | ソニー株式会社 | 磁気記録装置 |
US6744883B1 (en) | 1999-01-12 | 2004-06-01 | Paradyne Corporation | Filter system and method to suppress interference imposed upon a frequency-division multiplexed channel |
IT1313792B1 (it) * | 1999-10-18 | 2002-09-23 | M B Internat S R L | Procedimento di generazione di un segnale modulato in frequenza, conricevibilita' migliorata da parte di una radioricevente |
WO2001052430A1 (fr) * | 2000-01-10 | 2001-07-19 | Koninklijke Philips Electronics N.V. | Systeme de transmission |
AU2000268991A1 (en) * | 2000-08-10 | 2002-02-25 | Paradyne Corporation | Filter system and method to suppress interference imposed upon a frequency-division multiplexed channel |
US8811468B2 (en) * | 2005-05-26 | 2014-08-19 | Broadcom Corporation | Method and system for FM interference detection and mitigation |
US8965290B2 (en) * | 2012-03-29 | 2015-02-24 | General Electric Company | Amplitude enhanced frequency modulation |
US11940417B2 (en) * | 2021-02-02 | 2024-03-26 | Toyota Motor Engineering & Manufacturing North America, Inc. | Systems and methods for machine learning based flexural wave absorber |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3132339A (en) * | 1961-01-03 | 1964-05-05 | Raytheon Co | Sideband cancellation system |
FR2198336A1 (fr) * | 1972-09-02 | 1974-03-29 | Philips Nv | |
FR2345039A1 (fr) * | 1976-03-19 | 1977-10-14 | Ampex | Montage reducteur d'interference de moire pour magnetoscopes a modulation de frequence |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3993163A (en) * | 1975-04-21 | 1976-11-23 | Donald Barrett | Ladder socks |
-
1978
- 1978-05-16 NL NL7805232BA patent/NL7805232A/xx not_active Application Discontinuation
- 1978-07-10 US US05/922,971 patent/US4223282A/en not_active Expired - Lifetime
-
1979
- 1979-04-23 ZA ZA791931A patent/ZA791931B/xx unknown
- 1979-05-10 CA CA000327396A patent/CA1138095A/fr not_active Expired
- 1979-05-10 DK DK194179A patent/DK153267C/da not_active IP Right Cessation
- 1979-05-11 IT IT22624/79A patent/IT1113960B/it active
- 1979-05-11 DE DE2918977A patent/DE2918977C2/de not_active Expired
- 1979-05-11 GB GB7916539A patent/GB2022959B/en not_active Expired
- 1979-05-11 DD DD79212827A patent/DD144142A5/de unknown
- 1979-05-11 AU AU47006/79A patent/AU526081B2/en not_active Ceased
- 1979-05-14 ES ES480545A patent/ES480545A1/es not_active Expired
- 1979-05-14 NZ NZ190429A patent/NZ190429A/xx unknown
- 1979-05-14 CH CH4471/79A patent/CH648968A5/de not_active IP Right Cessation
- 1979-05-14 BE BE0/195153A patent/BE876240A/fr unknown
- 1979-05-14 ES ES480540A patent/ES480540A1/es not_active Expired
- 1979-05-14 ES ES480544A patent/ES480544A1/es not_active Expired
- 1979-05-14 SE SE7904202A patent/SE440435B/sv not_active IP Right Cessation
- 1979-05-14 BR BR7902936A patent/BR7902936A/pt unknown
- 1979-05-15 JP JP5874879A patent/JPS54150032A/ja active Granted
- 1979-05-15 MX MX177645A patent/MX149487A/es unknown
- 1979-05-16 FR FR7912482A patent/FR2426359A1/fr active Granted
- 1979-05-16 AT AT0363279A patent/AT378296B/de not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3132339A (en) * | 1961-01-03 | 1964-05-05 | Raytheon Co | Sideband cancellation system |
FR2198336A1 (fr) * | 1972-09-02 | 1974-03-29 | Philips Nv | |
FR2345039A1 (fr) * | 1976-03-19 | 1977-10-14 | Ampex | Montage reducteur d'interference de moire pour magnetoscopes a modulation de frequence |
Non-Patent Citations (1)
Title |
---|
PHILIPS RESEARCH REPORTS, vol. 32, no. 5/6, 1977, EINDHOVEN (NL) * |
Also Published As
Publication number | Publication date |
---|---|
CA1138095A (fr) | 1982-12-21 |
GB2022959B (en) | 1983-01-12 |
JPS6145919B2 (fr) | 1986-10-11 |
ZA791931B (en) | 1980-11-26 |
NL7805232A (nl) | 1979-11-20 |
SE440435B (sv) | 1985-07-29 |
AU4700679A (en) | 1979-11-22 |
NZ190429A (en) | 1982-05-31 |
GB2022959A (en) | 1979-12-19 |
CH648968A5 (de) | 1985-04-15 |
AT378296B (de) | 1985-07-10 |
JPS54150032A (en) | 1979-11-24 |
ATA363279A (de) | 1984-11-15 |
DD144142A5 (de) | 1980-09-24 |
FR2426359B1 (fr) | 1985-02-15 |
ES480540A1 (es) | 1979-12-16 |
US4223282A (en) | 1980-09-16 |
DK153267B (da) | 1988-06-27 |
MX149487A (es) | 1983-11-14 |
ES480544A1 (es) | 1979-12-16 |
DK153267C (da) | 1988-11-28 |
IT7922624A0 (it) | 1979-05-11 |
DE2918977C2 (de) | 1986-08-07 |
DK194179A (da) | 1979-11-17 |
IT1113960B (it) | 1986-01-27 |
BR7902936A (pt) | 1979-11-27 |
AU526081B2 (en) | 1982-12-16 |
ES480545A1 (es) | 1979-12-16 |
BE876240A (fr) | 1979-11-14 |
DE2918977A1 (de) | 1979-11-22 |
SE7904202L (sv) | 1979-11-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2426359A1 (fr) | Procede pour diminuer l'amplitude de composante d'interference dans un signal a modulation de frequence et dispositif permettant la mise en oeuvre de ce procede | |
FR2433855A1 (fr) | Amplificateur de puissance a haute frequence muni d'un dispositif de modulations | |
GB1530811A (en) | Optical recording | |
GB1528324A (en) | Video disc recording apparatus and methods | |
FR2358795A1 (fr) | Dispositif d'enregistrement et de reproduction de signaux video | |
FR2318547A1 (fr) | Circuit limiteur d'amplitude pour signaux video modules en frequence | |
BE878213A (fr) | Procede de regeneration de l'onde porteuse de modulation d'un signal module comportant des raies symetriques par rapport a cette porteuse et dispositif de mise en oeuvre | |
FR2361793A1 (fr) | Circuits de traitement de signaux video en couleur | |
ES442466A1 (es) | Un sistema para registrar magneticamente una senal video. | |
FR2404275A1 (fr) | Appareil d'enregistrement et de reproduction magnetiques | |
GB1499921A (en) | Recording and/or reproducing system | |
EP0242284A3 (fr) | Dispositif d'enregistrement et/ou de reproduction de signaux vidéo en couleurs et audio | |
ES442614A1 (es) | Perfeccionamientos introducidos en un portador de registro en forma de disco. | |
KR890006088A (ko) | 개선된 칼라 기록기술의 비디오 레코더 | |
FR2426380A1 (fr) | Procede pour moduler un signal complexe de television en couleur sur un signal de porteuse et dispositif pour la mise en oeuvre de ce procede | |
GB1151039A (en) | Recording System. | |
GB830684A (en) | Method of multiple track recording | |
JPS5586282A (en) | Recording method for color video signal | |
SU480105A1 (ru) | Способ воспроизведени звуковой информации | |
SU662960A1 (ru) | Способ записи и воспроизведени сигналов | |
JP3029661B2 (ja) | 信号記録装置 | |
IE42504L (en) | Carrier regeneration | |
KR900006952A (ko) | 고세도 컬러 영상신호를 광학적 기록 매체에 기록하는 방법 및 이 방법으로 기록된 고세도 컬러 영상 신호를 재생하는 방법 | |
GB1407038A (en) | Magnetic recording and or reproducing system | |
KR940015978A (ko) | 자기 영상 및 음성신호기록 및/또는 재생 장치와 기록매체 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |