FR2453571A1 - Appareil pour retablir le niveau continu d'un signal video composite - Google Patents
Appareil pour retablir le niveau continu d'un signal video compositeInfo
- Publication number
- FR2453571A1 FR2453571A1 FR8008981A FR8008981A FR2453571A1 FR 2453571 A1 FR2453571 A1 FR 2453571A1 FR 8008981 A FR8008981 A FR 8008981A FR 8008981 A FR8008981 A FR 8008981A FR 2453571 A1 FR2453571 A1 FR 2453571A1
- Authority
- FR
- France
- Prior art keywords
- level
- restoring
- video signal
- component
- composite video
- 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
- H04N9/87—Regeneration of colour television signals
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/005—Programmed access to indexed parts of tracks of operating discs, by guiding the disc
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
- G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/027—Analogue recording
- G11B5/035—Equalising
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
- H04N5/18—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
- H04N5/18—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
- H04N5/185—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N5/926—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/93—Regeneration of the television signal or of selected parts thereof
- H04N5/935—Regeneration of digital synchronisation signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/72—Circuits for processing colour signals for reinsertion of DC and slowly varying components of colour signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
- H04N9/78—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
-
- 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
- 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
- H04N9/793—Processing of colour television signals in connection with recording for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits
-
- 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
- H04N9/793—Processing of colour television signals in connection with recording for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits
- H04N9/7933—Processing of colour television signals in connection with recording for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits the level control being frequency-dependent
-
- 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
- H04N9/808—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the composite colour video-signal
-
- 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
- H04N9/87—Regeneration of colour television signals
- H04N9/873—Regeneration of colour television signals for restoring the colour component sequence of the reproduced chrominance signal
-
- 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
- H04N9/87—Regeneration of colour television signals
- H04N9/89—Time-base error compensation
- H04N9/896—Time-base error compensation using a digital memory with independent write-in and read-out clock generators
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
Abstract
Procédé et appareil de rétablissement du niveau de la composante continue d'un signal vidéo complexe comportant une salve de cycles de la sous-porteuse de chrominance dans l'intervalle de suppression horizontale du faisceau. Le niveau de la composante continue du signal est mesuré par des techniques d'intégration pendant une période qui correspond à un nombre entier de cycles de la sous-porteuse de chrominance et ce niveau mesuré est employé pour former un signal d'erreur qui servira à régler le niveau au volume désiré. En utilisant un nombre entier précis de cycles pendant l'intégration, on peut mesurer exactement le niveau de la composante continue.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4519576 | 1976-10-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2453571A1 true FR2453571A1 (fr) | 1980-10-31 |
FR2453571B1 FR2453571B1 (fr) | 1986-06-27 |
Family
ID=10436254
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7732574A Expired FR2371838B1 (fr) | 1976-10-29 | 1977-10-28 | Appareil d'enregistrement et de reproduction de signaux de television utilisant des supports magnetiques |
FR8008701A Withdrawn FR2453572A1 (fr) | 1976-10-29 | 1980-04-18 | Appareil pour numeriser un signal video |
FR8008981A Expired FR2453571B1 (fr) | 1976-10-29 | 1980-04-22 | Appareil pour retablir le niveau continu d'un signal video composite |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7732574A Expired FR2371838B1 (fr) | 1976-10-29 | 1977-10-28 | Appareil d'enregistrement et de reproduction de signaux de television utilisant des supports magnetiques |
FR8008701A Withdrawn FR2453572A1 (fr) | 1976-10-29 | 1980-04-18 | Appareil pour numeriser un signal video |
Country Status (5)
Country | Link |
---|---|
JP (5) | JPS5356004A (fr) |
BE (1) | BE860257A (fr) |
DE (8) | DE2759872C2 (fr) |
FR (3) | FR2371838B1 (fr) |
HK (6) | HK26586A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0281175A1 (fr) * | 1987-02-09 | 1988-09-07 | AT&T NETWORK SYSTEMS INTERNATIONAL B.V. | Circuit de verrouillage pour un système de transmission de télévision |
FR2651632A1 (fr) * | 1989-09-06 | 1991-03-08 | Tonna Electronique | Procede et dispositif d'alignement de signaux video et de detection de presence de donnees numeriques recurrentes dans un signal video. |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4251831A (en) | 1979-10-26 | 1981-02-17 | Kamath Bantval Y | Filter and system incorporating the filter for processing discrete samples of composite signals |
JPS5730484A (en) * | 1980-07-30 | 1982-02-18 | Hitachi Denshi Ltd | Compensation system for speed error of reproduced video signal |
NL187211C (nl) * | 1981-02-27 | Uniroyal Inc | Werkwijze voor de bereiding van een expandeerbaar mengsel, werkwijze voor de bereiding van geexpandeerde polymere materialen, alsmede werkwijze voor de bereiding van een hydrazodicarbonzuurester als bij verhitting gasafsplitsend middel. | |
US4519001A (en) * | 1981-10-27 | 1985-05-21 | Ampex Corporation | Apparatus for providing dropout compensation and error concealment in a PAL format video information signal |
JPS6298989A (ja) * | 1985-10-17 | 1987-05-08 | アムペックス コーポレーシヨン | ブランキング信号発生制御方法及び装置 |
DE3816568A1 (de) * | 1988-05-14 | 1989-11-16 | Bodenseewerk Geraetetech | Verfahren und vorrichtung zur demodulation eines wechselspannungs-signals |
KR920006751Y1 (ko) * | 1989-12-16 | 1992-09-26 | 삼성전자 주식회사 | 비디오 테이프 레코더의 lp 모드 다기능시 칼라신호 보상회로 |
JP4824610B2 (ja) * | 2007-03-19 | 2011-11-30 | テイ・エス テック株式会社 | 屋外車両用シート |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3657712A (en) * | 1955-12-09 | 1972-04-18 | Dirks Computer Systems Corp | Storing device for signals |
US3252098A (en) * | 1961-11-20 | 1966-05-17 | Ibm | Waveform shaping circuit |
US3539716A (en) * | 1968-03-18 | 1970-11-10 | Ampex | Method and apparatus for recording and reproducing television or other broad band signals with an altered time base effect |
JPS555954B1 (fr) * | 1968-08-14 | 1980-02-12 | ||
US3795763A (en) * | 1972-04-18 | 1974-03-05 | Communications Satellite Corp | Digital television transmission system |
JPS5320169B2 (fr) * | 1972-04-24 | 1978-06-24 | ||
JPS5037063B2 (fr) * | 1972-05-24 | 1975-11-29 | ||
JPS5011322A (fr) * | 1973-05-30 | 1975-02-05 | ||
NL7309910A (nl) * | 1973-07-17 | 1975-01-21 | Philips Nv | Inrichting voor het weergeven van een op een registratiedrager opgetekend kleurentelevisie- signaal. |
JPS557988B2 (fr) * | 1973-10-01 | 1980-02-29 | ||
CA1141022A (fr) * | 1974-04-25 | 1983-02-08 | Maurice G. Lemoine | Compensateur de base de temps |
-
1977
- 1977-10-28 DE DE19772759872 patent/DE2759872C2/de not_active Expired - Fee Related
- 1977-10-28 BE BE182168A patent/BE860257A/fr not_active IP Right Cessation
- 1977-10-28 DE DE19772759869 patent/DE2759869C2/de not_active Expired
- 1977-10-28 DE DE19772759865 patent/DE2759865C2/de not_active Expired
- 1977-10-28 DE DE19772759870 patent/DE2759870C2/de not_active Expired
- 1977-10-28 DE DE19772759868 patent/DE2759868C2/de not_active Expired
- 1977-10-28 DE DE19772759867 patent/DE2759867C2/de not_active Expired
- 1977-10-28 FR FR7732574A patent/FR2371838B1/fr not_active Expired
- 1977-10-28 DE DE19772759871 patent/DE2759871C2/de not_active Expired
- 1977-10-28 DE DE19772759866 patent/DE2759866C2/de not_active Expired
- 1977-10-29 JP JP13019377A patent/JPS5356004A/ja active Pending
-
1980
- 1980-04-18 FR FR8008701A patent/FR2453572A1/fr not_active Withdrawn
- 1980-04-22 FR FR8008981A patent/FR2453571B1/fr not_active Expired
-
1986
- 1986-04-10 HK HK26586A patent/HK26586A/xx unknown
- 1986-04-10 HK HK26386A patent/HK26386A/xx unknown
- 1986-04-10 HK HK26286A patent/HK26286A/xx unknown
- 1986-04-10 HK HK26486A patent/HK26486A/xx unknown
- 1986-04-10 HK HK26186A patent/HK26186A/xx unknown
- 1986-05-08 HK HK31886A patent/HK31886A/xx unknown
-
1988
- 1988-04-27 JP JP63102889A patent/JPH0242889A/ja active Granted
- 1988-04-27 JP JP63102890A patent/JPH0242890A/ja active Granted
- 1988-04-27 JP JP63102887A patent/JPH0235880A/ja active Granted
- 1988-04-27 JP JP63102888A patent/JPH0242888A/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0281175A1 (fr) * | 1987-02-09 | 1988-09-07 | AT&T NETWORK SYSTEMS INTERNATIONAL B.V. | Circuit de verrouillage pour un système de transmission de télévision |
FR2651632A1 (fr) * | 1989-09-06 | 1991-03-08 | Tonna Electronique | Procede et dispositif d'alignement de signaux video et de detection de presence de donnees numeriques recurrentes dans un signal video. |
Also Published As
Publication number | Publication date |
---|---|
JPH0242888A (ja) | 1990-02-13 |
DE2759872C2 (fr) | 1991-08-29 |
JPH0242889A (ja) | 1990-02-13 |
HK26386A (en) | 1986-04-18 |
JPH0250677B2 (fr) | 1990-11-05 |
DE2759866C2 (de) | 1983-10-13 |
JPH0440915B2 (fr) | 1992-07-06 |
DE2759870C2 (de) | 1983-10-20 |
DE2759869C2 (de) | 1985-01-17 |
DE2759865C2 (de) | 1984-04-05 |
HK26286A (en) | 1986-04-18 |
JPH0235880A (ja) | 1990-02-06 |
HK26486A (en) | 1986-04-18 |
DE2759867C2 (de) | 1986-06-26 |
DE2759868C2 (de) | 1983-02-10 |
HK26586A (en) | 1986-04-18 |
HK31886A (en) | 1986-05-16 |
FR2453571B1 (fr) | 1986-06-27 |
FR2371838B1 (fr) | 1985-06-21 |
JPH0242890A (ja) | 1990-02-13 |
JPS5356004A (en) | 1978-05-22 |
HK26186A (en) | 1986-04-18 |
BE860257A (fr) | 1978-02-15 |
DE2759871C2 (de) | 1983-06-09 |
JPH0440913B2 (fr) | 1992-07-06 |
FR2371838A1 (fr) | 1978-06-16 |
FR2453572A1 (fr) | 1980-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |