FR2294451A1 - Dispositif pour mesurer des quantites de charges electriques - Google Patents
Dispositif pour mesurer des quantites de charges electriquesInfo
- Publication number
- FR2294451A1 FR2294451A1 FR7440303A FR7440303A FR2294451A1 FR 2294451 A1 FR2294451 A1 FR 2294451A1 FR 7440303 A FR7440303 A FR 7440303A FR 7440303 A FR7440303 A FR 7440303A FR 2294451 A1 FR2294451 A1 FR 2294451A1
- Authority
- FR
- France
- Prior art keywords
- electrical charges
- measuring quantities
- quantities
- measuring
- charges
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/08—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using electrostatic charge injection; Record carriers therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/24—Arrangements for measuring quantities of charge
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Pyridine Compounds (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7440303A FR2294451A1 (fr) | 1974-12-09 | 1974-12-09 | Dispositif pour mesurer des quantites de charges electriques |
US05/637,047 US4064539A (en) | 1974-12-09 | 1975-12-02 | Device for measuring quantities of electric charges or similar electric parameters |
GB49872/75A GB1529950A (en) | 1974-12-09 | 1975-12-04 | Devices for measuring quantities of electric charges |
DE19752555185 DE2555185A1 (de) | 1974-12-09 | 1975-12-08 | Vorrichtung zur messung von elektrischen ladungsmengen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7440303A FR2294451A1 (fr) | 1974-12-09 | 1974-12-09 | Dispositif pour mesurer des quantites de charges electriques |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2294451A1 true FR2294451A1 (fr) | 1976-07-09 |
FR2294451B1 FR2294451B1 (fr) | 1977-11-10 |
Family
ID=9145766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7440303A Granted FR2294451A1 (fr) | 1974-12-09 | 1974-12-09 | Dispositif pour mesurer des quantites de charges electriques |
Country Status (4)
Country | Link |
---|---|
US (1) | US4064539A (fr) |
DE (1) | DE2555185A1 (fr) |
FR (1) | FR2294451A1 (fr) |
GB (1) | GB1529950A (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2375690A1 (fr) * | 1976-12-23 | 1978-07-21 | Thomson Brandt | Dispositif de detection de l'erreur de suivi radial pour lecteurs et enregistreurs optiques |
US4502082A (en) * | 1977-06-16 | 1985-02-26 | Burroughs Corporation | Spiral recording and associated system |
US4419700A (en) * | 1977-06-16 | 1983-12-06 | Burroughs Corporation | Dual-track spiral recording and associated system |
US4155098A (en) * | 1977-06-28 | 1979-05-15 | Rca Corporation | Groove depth estimation system using diffractive groove effects |
US4180830A (en) * | 1977-06-28 | 1979-12-25 | Rca Corporation | Depth estimation system using diffractive effects of the grooves and signal elements in the grooves |
JPS5467475A (en) * | 1977-11-09 | 1979-05-30 | Canon Inc | Surface potentiometer |
US4327434A (en) * | 1980-01-28 | 1982-04-27 | Rca Corporation | Video disc stylus position sensor system |
USRE32457E (en) * | 1981-09-30 | 1987-07-07 | Rca Corporation | Scanning capacitance microscope |
US4481616A (en) * | 1981-09-30 | 1984-11-06 | Rca Corporation | Scanning capacitance microscope |
US4879672A (en) * | 1987-08-21 | 1989-11-07 | Control Data Corporation | Method and apparatus for testing runout velocity and acceleration on a surface |
US7483363B2 (en) * | 2004-10-14 | 2009-01-27 | International Business Machines Corporation | Data storage device and method for operating a data storage device |
US7372278B2 (en) * | 2005-08-16 | 2008-05-13 | Canon Kabushiki Kaisha | Electric potential measuring apparatus electrostatic capacitance measuring apparatus, electric potential measuring method, electrostatic capacitance measuring method, and image forming apparatus |
DE102007034072B3 (de) * | 2007-07-20 | 2009-03-19 | Ludwig-Maximilians-Universität München | Vorrichtung und Verfahren zum Ladungstransfer |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3198880A (en) * | 1952-09-03 | 1965-08-03 | Hall William D | Photographic disc reproduction of television signals |
US3175205A (en) * | 1961-06-13 | 1965-03-23 | Ibm | Data tracking system |
US3126535A (en) * | 1961-12-27 | 1964-03-24 | Transducer positioning system | |
DE1181275B (de) * | 1962-09-19 | 1964-11-12 | Grammophon Ges Mit Beschraenkt | Anordnung zur Abtastung von Aufzeichnungen auf band- oder plattenfoermigen Aufzeich-nungstraegern |
US3624284A (en) * | 1966-09-01 | 1971-11-30 | Battelle Development Corp | Photographic record of digital information and playback system including optical scanner |
US3711641A (en) * | 1971-03-22 | 1973-01-16 | Rca Corp | Velocity adjusting system |
NL7211998A (fr) * | 1972-09-02 | 1974-03-05 | ||
US3946367A (en) * | 1972-12-20 | 1976-03-23 | Videonics Of Hawaii, Inc. | Three dimensional electro-optical retrieval system |
US3872241A (en) * | 1973-07-12 | 1975-03-18 | Zenith Radio Corp | Video disc pickup with capacitive tracking |
-
1974
- 1974-12-09 FR FR7440303A patent/FR2294451A1/fr active Granted
-
1975
- 1975-12-02 US US05/637,047 patent/US4064539A/en not_active Expired - Lifetime
- 1975-12-04 GB GB49872/75A patent/GB1529950A/en not_active Expired
- 1975-12-08 DE DE19752555185 patent/DE2555185A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
US4064539A (en) | 1977-12-20 |
DE2555185A1 (de) | 1976-06-10 |
GB1529950A (en) | 1978-10-25 |
FR2294451B1 (fr) | 1977-11-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |