FR2451139A1 - Circuit de verrouillage pour un signal video - Google Patents
Circuit de verrouillage pour un signal videoInfo
- Publication number
- FR2451139A1 FR2451139A1 FR8004597A FR8004597A FR2451139A1 FR 2451139 A1 FR2451139 A1 FR 2451139A1 FR 8004597 A FR8004597 A FR 8004597A FR 8004597 A FR8004597 A FR 8004597A FR 2451139 A1 FR2451139 A1 FR 2451139A1
- Authority
- FR
- France
- Prior art keywords
- video signal
- amplifier
- lock circuit
- output
- input
- 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
- 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
- H04N5/165—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Manipulation Of Pulses (AREA)
- Amplifiers (AREA)
Abstract
CE CIRCUIT EST FORME D'UN AMPLIFICATEUR DE DIFFERENCE DONT LA SORTIE EST, PAR L'INTERMEDIAIRE D'UNE DIODE, A LA FOIS CONNECTEE A LA SORTIE DE COMMUTATION ET COUPLEE EN RETOUR VERS UNE ENTREE DE L'AMPLIFICATEUR QUI EST CONNECTEE EN OUTRE PAR L'INTERMEDIAIRE D'UNE RESISTANCE A UNE BORNE PORTANT UNE TENSION DE REFERENCE; LA SORTIE DE L'AMPLIFICATEUR EST EN OUTRE CONNECTEE A UN CIRCUIT DE CHARGE POUR UN CONDENSATEUR QUI EST CONNECTE A L'AUTRE ENTREE DE L'AMPLIFICATEUR RECEVANT LE SIGNAL VIDEO. APPLICATION: CONSTRUCTION D'APPAREILS DE TELEVISION.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7901722A NL7901722A (nl) | 1979-03-05 | 1979-03-05 | Klemschakeling voor een videosignaal. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2451139A1 true FR2451139A1 (fr) | 1980-10-03 |
FR2451139B1 FR2451139B1 (fr) | 1982-07-16 |
Family
ID=19832743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8004597A Granted FR2451139A1 (fr) | 1979-03-05 | 1980-02-29 | Circuit de verrouillage pour un signal video |
Country Status (6)
Country | Link |
---|---|
US (1) | US4296437A (fr) |
JP (1) | JPS55118275A (fr) |
DE (1) | DE3007466A1 (fr) |
FR (1) | FR2451139A1 (fr) |
GB (1) | GB2048013B (fr) |
NL (1) | NL7901722A (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58178670A (ja) * | 1982-04-12 | 1983-10-19 | Alps Electric Co Ltd | ビデオ・クランプ回路 |
GB2148636A (en) * | 1983-09-15 | 1985-05-30 | Sinclair Res Ltd | Improvements in or relating to television receivers |
DE3618939A1 (de) * | 1986-06-05 | 1987-12-10 | Philips Patentverwaltung | Schaltungsanordnung zum einstellen eines referenzpegels in einem periodischen signal |
DE3625702A1 (de) * | 1986-07-30 | 1988-02-11 | Siemens Ag | Schaltungsanordnung zum klemmen von videosignalen |
US5003564A (en) * | 1989-04-04 | 1991-03-26 | Rca Licensing Corporation | Digital signal clamp circuitry |
US4965669A (en) * | 1989-04-12 | 1990-10-23 | Rca Licensing Corporation | Apparatus for digitally controlling the D.C. value of a processed signal |
DE3925329A1 (de) * | 1989-07-31 | 1991-02-07 | Siemens Ag | Schaltungsanordnung zum regeln der amplitude von videosignalen |
US5099366A (en) * | 1989-08-25 | 1992-03-24 | Ampex Corporation | Low frequency restorer |
US5027017A (en) * | 1990-01-19 | 1991-06-25 | Rca Licensing Corporation | Sync tip clamp circuitry |
MY105454A (en) * | 1990-04-30 | 1994-10-31 | Thomson Comsumer Electronics Inc | Television signal processing circuits. |
US5272522A (en) * | 1990-04-30 | 1993-12-21 | Thomson Consumer Electronics, Inc. | Video signal processing circuits |
FR2755805B1 (fr) * | 1996-11-14 | 1998-12-11 | Thomson Broadcast Systems | Circuit d'amplification comprenant un dispositif de compensation de courant d'entree |
US7652723B1 (en) | 2004-04-19 | 2010-01-26 | Video Accessory Corporation | Composite video signal correction unit for video imaging and video recording systems |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3955047A (en) * | 1974-04-16 | 1976-05-04 | Rca Corporation | D.C. reinsertion in video amplifier |
US3927255A (en) * | 1974-05-01 | 1975-12-16 | Rca Corp | Black level clamping circuit for a television signal processor |
DE2433452A1 (de) * | 1974-07-11 | 1976-01-22 | Standard Elektrik Lorenz Ag | Schaltungsanordnung zum klemmen eines videosignales |
DE2810706A1 (de) * | 1978-03-11 | 1979-09-13 | Bosch Gmbh Robert | Schaltanordnung zur wiedereinfuehrung der gleichspannungskomponente |
-
1979
- 1979-03-05 NL NL7901722A patent/NL7901722A/nl not_active Application Discontinuation
-
1980
- 1980-01-21 US US06/113,885 patent/US4296437A/en not_active Expired - Lifetime
- 1980-02-28 DE DE19803007466 patent/DE3007466A1/de not_active Withdrawn
- 1980-02-29 GB GB8006938A patent/GB2048013B/en not_active Expired
- 1980-02-29 FR FR8004597A patent/FR2451139A1/fr active Granted
- 1980-03-01 JP JP2467280A patent/JPS55118275A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US4296437A (en) | 1981-10-20 |
DE3007466A1 (de) | 1980-09-18 |
GB2048013A (en) | 1980-12-03 |
GB2048013B (en) | 1983-03-16 |
NL7901722A (nl) | 1980-09-09 |
FR2451139B1 (fr) | 1982-07-16 |
JPS55118275A (en) | 1980-09-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |