FR2397751A1 - Amplificateur asservi pour objectif de camera de television - Google Patents
Amplificateur asservi pour objectif de camera de televisionInfo
- Publication number
- FR2397751A1 FR2397751A1 FR7821048A FR7821048A FR2397751A1 FR 2397751 A1 FR2397751 A1 FR 2397751A1 FR 7821048 A FR7821048 A FR 7821048A FR 7821048 A FR7821048 A FR 7821048A FR 2397751 A1 FR2397751 A1 FR 2397751A1
- Authority
- FR
- France
- Prior art keywords
- voltage source
- camera
- servo motor
- held
- hand
- 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
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
- H03G11/002—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general without controlling loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/288—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using variable impedance
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Lens Barrels (AREA)
- Television Receiver Circuits (AREA)
- Automatic Focus Adjustment (AREA)
- Studio Devices (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
L'invention a trait à un amplificateur asservi pour objectif de caméra de télévision. Elle a pour objet un amplificateur asservi pour une caméra de télévision pour entraîner un moteur selon un signal d'entrée délivré par une caméra de télévision ou un objectif de télévision, alimenté par une source d'énergie interne. Un organe de limitation de courant est prévu entre la source d'énergie et l'amplificateur asservi, de telle sorte qu'un courant d'intensité supérieure à un niveau prédéterminé ne peut circuler dans l'amplificateur asservi. L'application notamment aux caméras de télévision portatives de reportage.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1977094930U JPS5926697Y2 (ja) | 1977-07-16 | 1977-07-16 | テレビレンズ用サ−ボ増幅回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2397751A1 true FR2397751A1 (fr) | 1979-02-09 |
FR2397751B1 FR2397751B1 (fr) | 1982-04-23 |
Family
ID=14123677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7821048A Granted FR2397751A1 (fr) | 1977-07-16 | 1978-07-13 | Amplificateur asservi pour objectif de camera de television |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS5926697Y2 (fr) |
DE (1) | DE2830697B2 (fr) |
FR (1) | FR2397751A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5866904A (ja) * | 1981-10-17 | 1983-04-21 | Fuji Photo Optical Co Ltd | サ−ボモジユ−ル用制御回路 |
JP2885376B2 (ja) * | 1989-03-13 | 1999-04-19 | 富士写真光機株式会社 | テレビカメラ用レンズ装置 |
JP2794631B2 (ja) * | 1989-05-10 | 1998-09-10 | キヤノン株式会社 | パワーズーム機能付カメラ及びレンズ交換可能なカメラ及びパワーズーム機能付交換レンズ |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3061673A (en) * | 1959-02-05 | 1962-10-30 | Thompson Ramo Wooldridge Inc | Servo system for light level control |
DE1917015A1 (de) * | 1969-04-02 | 1970-12-17 | Siemens Ag | Anordnung zum Regeln des auf die lichtempfindliche Schicht einer Fernsehkamera fallenden Lichtes |
US3593078A (en) * | 1969-09-08 | 1971-07-13 | North American Rockwell | Starting and operating control for an ac motor powered by a dc power supply |
US3848123A (en) * | 1973-03-30 | 1974-11-12 | Rca Corp | Automatic brightness control for image intensifier tube |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2113942B2 (de) * | 1971-03-23 | 1973-09-13 | Siemens Ag, 1000 Berlin U. 8000 Muenchen | Kamera, insbesondere Fernsehkamera |
JPS4923631A (fr) * | 1972-06-22 | 1974-03-02 | ||
JPS5131651U (fr) * | 1974-08-29 | 1976-03-08 |
-
1977
- 1977-07-16 JP JP1977094930U patent/JPS5926697Y2/ja not_active Expired
-
1978
- 1978-07-12 DE DE2830697A patent/DE2830697B2/de active Granted
- 1978-07-13 FR FR7821048A patent/FR2397751A1/fr active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3061673A (en) * | 1959-02-05 | 1962-10-30 | Thompson Ramo Wooldridge Inc | Servo system for light level control |
DE1917015A1 (de) * | 1969-04-02 | 1970-12-17 | Siemens Ag | Anordnung zum Regeln des auf die lichtempfindliche Schicht einer Fernsehkamera fallenden Lichtes |
US3593078A (en) * | 1969-09-08 | 1971-07-13 | North American Rockwell | Starting and operating control for an ac motor powered by a dc power supply |
US3848123A (en) * | 1973-03-30 | 1974-11-12 | Rca Corp | Automatic brightness control for image intensifier tube |
Also Published As
Publication number | Publication date |
---|---|
FR2397751B1 (fr) | 1982-04-23 |
JPS5422416U (fr) | 1979-02-14 |
DE2830697B2 (de) | 1979-11-29 |
JPS5926697Y2 (ja) | 1984-08-02 |
DE2830697A1 (de) | 1979-01-18 |
DE2830697C3 (fr) | 1984-10-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |