GB353056A - Improvements in electric synchronising systems - Google Patents

Improvements in electric synchronising systems

Info

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
Application number
GB11930/30A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB11930/30A priority Critical patent/GB353056A/en
Priority to GB17459/30A priority patent/GB356258A/en
Priority to FR715314D priority patent/FR715314A/en
Priority to DEA61589D priority patent/DE554470C/en
Priority to FR40359D priority patent/FR40359E/en
Priority to US542418A priority patent/US1874774A/en
Priority to DEA62218D priority patent/DE653480C/en
Publication of GB353056A publication Critical patent/GB353056A/en
Expired legal-status Critical Current

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.
GB11930/30A 1930-04-15 1930-04-15 Improvements in electric synchronising systems Expired GB353056A (en)

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)

* Cited by examiner, † Cited by third party
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

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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