GB356258A - Improvements in electric synchronising systems - Google Patents

Improvements in electric synchronising systems

Info

Publication number
GB356258A
GB356258A GB17459/30A GB1745930A GB356258A GB 356258 A GB356258 A GB 356258A GB 17459/30 A GB17459/30 A GB 17459/30A GB 1745930 A GB1745930 A GB 1745930A GB 356258 A GB356258 A GB 356258A
Authority
GB
United Kingdom
Prior art keywords
coils
discharge device
control electrode
current
regains
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
GB17459/30A
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
Priority to GB11930/30A priority Critical patent/GB353056A/en
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
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 GB356258A publication Critical patent/GB356258A/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)
  • Electrotherapy Devices (AREA)
  • Prostheses (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Control Of Multiple Motors (AREA)
  • Particle Accelerators (AREA)

Abstract

356,258. Synchronous movements. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and MADDOCK, A. J., 34, Regent Place, Rugby. June 5, 1930, No. 17459. [Class 40 (iii).] Incoming synchronizing impulses produce current impulses from a direct-current source 6 to energize the driving coil or coils 7 of a phonic wheel 1, which rotates the body to be synchronized. The coils 7 and the source 6 are in the anode circuit of a gas-filled discharge device 2, described in Specification 346,957, the control electrode 4 of which is maintained at negative potential, sufficient to prevent current flowing through the discharge device, by causing television signals to produce a voltage drop across a resistance 8. During the signal interruption at the end of each scanning-line, the control electrode regains a value sufficient to initiate a current flow through the discharge device. A rotary interrupter 14, driven by the phonic wheel, connects the anode 5 to the cathode 3 at periods so phased that the control electrode regains control over the discharge in the interval between successive synchronizing impulses. Initial phase correction is effected by adjusting the driving coils and the stationary element of the interrupter.
GB17459/30A 1930-04-15 1930-06-05 Improvements in electric synchronising systems Expired GB356258A (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
GB356258A true GB356258A (en) 1931-09-07

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 Before (1)

Application Number Title Priority Date Filing Date
GB11930/30A Expired GB353056A (en) 1930-04-15 1930-04-15 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE747900C (en) * 1934-03-17 1944-10-20 Cfcmug Circuit arrangement for television transmitters for generating synchronizing pulses

Families Citing this family (2)

* 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
US3158079A (en) * 1957-03-28 1964-11-24 Chicago Aerial Ind Inc Control system for aerial photography

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747900C (en) * 1934-03-17 1944-10-20 Cfcmug Circuit arrangement for television transmitters for generating synchronizing pulses
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

Also Published As

Publication number Publication date
GB353056A (en) 1931-07-15
US1874774A (en) 1932-08-30
FR40359E (en) 1932-06-09
DE554470C (en) 1932-07-08
FR715314A (en) 1931-12-02
DE653480C (en) 1937-11-25

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