FR2405519A1 - Perfectionnements relatifs aux enregistreurs a bande - Google Patents
Perfectionnements relatifs aux enregistreurs a bandeInfo
- Publication number
- FR2405519A1 FR2405519A1 FR7828237A FR7828237A FR2405519A1 FR 2405519 A1 FR2405519 A1 FR 2405519A1 FR 7828237 A FR7828237 A FR 7828237A FR 7828237 A FR7828237 A FR 7828237A FR 2405519 A1 FR2405519 A1 FR 2405519A1
- Authority
- FR
- France
- Prior art keywords
- tape recorder
- speed
- circuits
- slope
- operating
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D9/00—Recording measured values
- G01D9/02—Producing one or more recordings of the values of a single variable
- G01D9/10—Producing one or more recordings of the values of a single variable the recording element, e.g. stylus, being controlled in accordance with the variable, and the recording medium, e.g. paper roll, being controlled in accordance with time
- G01D9/12—Producing one or more recordings of the values of a single variable the recording element, e.g. stylus, being controlled in accordance with the variable, and the recording medium, e.g. paper roll, being controlled in accordance with time recording occurring continuously
- G01D9/14—Producing one or more recordings of the values of a single variable the recording element, e.g. stylus, being controlled in accordance with the variable, and the recording medium, e.g. paper roll, being controlled in accordance with time recording occurring continuously with provision for altering speed of recording medium in accordance with the magnitude of the variable to be recorded
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/12—Measuring rate of change
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Recording Measured Values (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
L'invention concerne un enregistreur potentiométrique à bande. La vitesse du moteur 22 d'entraînement du papier varie, dans un mode de fonctionnement (automatique) choisi au moyen d'un sélecteur 32, entre deux valeurs en fonction du taux de variation ou pente du signal appliqué à une borne d'entrée 10, détecté dans un détecteur de pente 30. La vitesse lente est obtenue en faisant fonctionner l'enregistreur par intermittence à la vitesse rapide et, au cours de périodes de non-fonctionnement, les circuits qui consomment du courant tels que les circuits 16, 18, 26 sont mis hors tension par un interrupteur 40. Application aux enregistreurs alimentés par piles ou accumulateurs
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4148677 | 1977-10-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2405519A1 true FR2405519A1 (fr) | 1979-05-04 |
Family
ID=10419917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7828237A Withdrawn FR2405519A1 (fr) | 1977-10-05 | 1978-10-03 | Perfectionnements relatifs aux enregistreurs a bande |
Country Status (3)
Country | Link |
---|---|
US (1) | US4215351A (fr) |
DE (1) | DE2842751A1 (fr) |
FR (1) | FR2405519A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4359751A (en) * | 1979-09-04 | 1982-11-16 | Kaye Instruments, Inc. | Stepper motor for data recorder |
DE3014043A1 (de) * | 1980-04-11 | 1981-10-15 | Siemens AG, 1000 Berlin und 8000 München | Papiertransportvorrichtung fuer ein aufzeichnungsgeraet |
US4951681A (en) * | 1988-11-14 | 1990-08-28 | Mortara Instrument | Electrocardiographic recording method and apparatus |
US5101220A (en) * | 1990-03-29 | 1992-03-31 | Astro-Med, Inc. | Chart recorder with thermal print head and sound generator |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1302999A (fr) * | 1961-06-19 | 1962-09-07 | Ass Ouvriers Instr Precision | Perfectionnements aux enregistreurs potentiométriques |
US3914773A (en) * | 1974-04-05 | 1975-10-21 | Harold W Harrower | Recording device |
US3958563A (en) * | 1974-11-06 | 1976-05-25 | Heriberto Fernandez | Two speed system for EEG recording |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2228883A (en) * | 1938-03-19 | 1941-01-14 | Rca Corp | High speed logarithmic voltage recorder |
US2647033A (en) * | 1952-06-11 | 1953-07-28 | Gen Electric | Spark stylus recording apparatus |
US2890924A (en) * | 1955-08-31 | 1959-06-16 | Jr Edgar A Norfolk | Variable speed drive |
US3245083A (en) * | 1965-03-12 | 1966-04-05 | Clevite Corp | Direct writing oscillograph |
US3965434A (en) * | 1972-12-01 | 1976-06-22 | Shm Nuclear Corporation | Automatic frequency control system for driving a linear accelerator |
US4017868A (en) * | 1975-11-28 | 1977-04-12 | American Optical Corporation | Thermal Recorder |
-
1978
- 1978-09-21 US US05/944,559 patent/US4215351A/en not_active Ceased
- 1978-09-30 DE DE19782842751 patent/DE2842751A1/de not_active Withdrawn
- 1978-10-03 FR FR7828237A patent/FR2405519A1/fr not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1302999A (fr) * | 1961-06-19 | 1962-09-07 | Ass Ouvriers Instr Precision | Perfectionnements aux enregistreurs potentiométriques |
US3914773A (en) * | 1974-04-05 | 1975-10-21 | Harold W Harrower | Recording device |
US3958563A (en) * | 1974-11-06 | 1976-05-25 | Heriberto Fernandez | Two speed system for EEG recording |
Also Published As
Publication number | Publication date |
---|---|
DE2842751A1 (de) | 1979-04-19 |
US4215351A (en) | 1980-07-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |