GB353056A - Improvements in electric synchronising systems - Google Patents
Improvements in electric synchronising systemsInfo
- Publication number
- GB353056A GB353056A GB11930/30A GB1193030A GB353056A GB 353056 A GB353056 A GB 353056A GB 11930/30 A GB11930/30 A GB 11930/30A GB 1193030 A GB1193030 A GB 1193030A GB 353056 A GB353056 A GB 353056A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phonic wheel
- synchronism
- phase
- motor
- condenser
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0095—Arrangements for synchronising receiver with transmitter with mechanical means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
- H04N5/123—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal directly commands a frequency generator
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Control Of Multiple Motors (AREA)
- Gas-Filled Discharge Tubes (AREA)
- Particle Accelerators (AREA)
- Electrotherapy Devices (AREA)
- Prostheses (AREA)
Abstract
353,056. Synchronous movements. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and MADDOCK, A. J., 34, Regent Place, Rugby. April 15, 1930, No. 11930. [Class 40 (iii).] Two rotating bodies are maintained in synchronism by means of a variable condenser having its plates attached to the respective bodies, changes in capacity of the condenser affecting the supply of power to the controlled body. As shown, a phonic wheel W is rotated by, and in synchronism with, received signals and controls the supply of power to motive means M for the controlled body. The plates P1, P2 of a variable condenser are rotated respectively by the phonic wheel and the motor M, and the variation in capacity of the condenser varies the phase of an alternating voltage impressed on the grid G of a thermionic valve V of the type described in Specification 309,442, [Class 39 (i), Electric lamps, Arc &c.], with respect to the phase of an alternating voltage which is impressed on the anode A of the valve. The resulting change in current passing through the valve alters the speed of the motor to bring the controlled body into synchronism with the phonic wheel. The field of the phonic wheel and the stator of the motor can be rotated to correct large differences in phase.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB11930/30A GB353056A (en) | 1930-04-15 | 1930-04-15 | Improvements in electric synchronising systems |
GB17459/30A GB356258A (en) | 1930-04-15 | 1930-06-05 | Improvements in electric synchronising systems |
FR715314D FR715314A (en) | 1930-04-15 | 1931-04-15 | Improvements to synchronization methods and devices |
DEA61589D DE554470C (en) | 1930-04-15 | 1931-04-16 | Synchronization device for two rotating bodies, one of which is kept in synchronism by pulses sent from the other |
FR40359D FR40359E (en) | 1930-04-15 | 1931-06-04 | Improvements to synchronization methods and devices |
US542418A US1874774A (en) | 1930-04-15 | 1931-06-05 | Electric synchronizing system |
DEA62218D DE653480C (en) | 1930-04-15 | 1931-06-06 | Synchronization device for rotating bodies, in which the synchronization pulses control the synchronism via a discharge vessel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB11930/30A GB353056A (en) | 1930-04-15 | 1930-04-15 | Improvements in electric synchronising systems |
GB17459/30A GB356258A (en) | 1930-04-15 | 1930-06-05 | Improvements in electric synchronising systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB353056A true GB353056A (en) | 1931-07-15 |
Family
ID=40510391
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11930/30A Expired GB353056A (en) | 1930-04-15 | 1930-04-15 | Improvements in electric synchronising systems |
GB17459/30A Expired GB356258A (en) | 1930-04-15 | 1930-06-05 | Improvements in electric synchronising systems |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17459/30A Expired GB356258A (en) | 1930-04-15 | 1930-06-05 | Improvements in electric synchronising systems |
Country Status (4)
Country | Link |
---|---|
US (1) | US1874774A (en) |
DE (2) | DE554470C (en) |
FR (2) | FR715314A (en) |
GB (2) | GB353056A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE763191C (en) * | 1933-05-20 | 1954-12-13 | Opta Radio A G | Arrangement for the transmission of synchronization pulses during the sampling pauses of the television transmitter |
BE407565A (en) * | 1934-03-17 | |||
DE743485C (en) * | 1934-06-08 | 1943-12-27 | Opta Radio Ag | Arrangement for generating synchronizing pulses and for inserting them into the picture signal sequence in television broadcasts |
US3158079A (en) * | 1957-03-28 | 1964-11-24 | Chicago Aerial Ind Inc | Control system for aerial photography |
-
1930
- 1930-04-15 GB GB11930/30A patent/GB353056A/en not_active Expired
- 1930-06-05 GB GB17459/30A patent/GB356258A/en not_active Expired
-
1931
- 1931-04-15 FR FR715314D patent/FR715314A/en not_active Expired
- 1931-04-16 DE DEA61589D patent/DE554470C/en not_active Expired
- 1931-06-04 FR FR40359D patent/FR40359E/en not_active Expired
- 1931-06-05 US US542418A patent/US1874774A/en not_active Expired - Lifetime
- 1931-06-06 DE DEA62218D patent/DE653480C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR40359E (en) | 1932-06-09 |
FR715314A (en) | 1931-12-02 |
GB356258A (en) | 1931-09-07 |
DE554470C (en) | 1932-07-08 |
US1874774A (en) | 1932-08-30 |
DE653480C (en) | 1937-11-25 |
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