US2098598A - Synchronizing system - Google Patents

Synchronizing system Download PDF

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Publication number
US2098598A
US2098598A US643596A US64359632A US2098598A US 2098598 A US2098598 A US 2098598A US 643596 A US643596 A US 643596A US 64359632 A US64359632 A US 64359632A US 2098598 A US2098598 A US 2098598A
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US
United States
Prior art keywords
tube
picture
potential
line
cathode ray
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 - Lifetime
Application number
US643596A
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English (en)
Inventor
Schroter Fritz
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.)
Telefunken AG
Original Assignee
Telefunken AG
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 Telefunken AG filed Critical Telefunken AG
Application granted granted Critical
Publication of US2098598A publication Critical patent/US2098598A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

Definitions

  • the drop of potential occasioned as a result across the resistance 2l is chosen so high that even in the presence of maximum impulses of the picture-telegraph transmitter the potential of the gaseous space discharge device control electrode 25 will never become positive by opposite action across the terminals of re- But if upon completion of a picture line the wire i8 is impinged by the Ideflected beam of electron-rays the control grid 29 of tube 28 will momentarily be charged to a high negative value, the iiow of the plate current will be blocked in 28, and the fall of potential across resistance 2'I as a consequence becomes zero.
  • a cathode ray tube means for defiecting the cathode ray developed within the tube, said means comprising a condenser and means for uniformly charging the condenser, a gaseous space discharge device normally biased below cut-olf and operable at predetermined time periods to discharge said condenser, said means for biasing the gaseous space discharge device below cut-oli comprising a no-rmally operative amplifier tube having in its output circuit a resistor the voltage drop through which is adapted to bias the control electrode of the said space discharge device, an electrode element provided within the cathode ray tube and subjected at points of maximum sweep of the cathode ray pencil to the electron stream of the said pencil, a connection between said electrode and the input circuit of said amplifying
  • a means for dei'lecting the cathode ray developed within the tube said means comprising a condenser and means for uniformly charging the condenser,

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Transforming Electric Information Into Light Information (AREA)
US643596A 1931-12-12 1932-11-21 Synchronizing system Expired - Lifetime US2098598A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE394883X 1931-12-12

Publications (1)

Publication Number Publication Date
US2098598A true US2098598A (en) 1937-11-09

Family

ID=6396750

Family Applications (1)

Application Number Title Priority Date Filing Date
US643596A Expired - Lifetime US2098598A (en) 1931-12-12 1932-11-21 Synchronizing system

Country Status (3)

Country Link
US (1) US2098598A (enrdf_load_stackoverflow)
GB (1) GB394883A (enrdf_load_stackoverflow)
NL (1) NL38266C (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504972A (en) * 1946-04-29 1950-04-25 Farnsworth Res Corp Picture and sound transmitter
US2523162A (en) * 1945-10-03 1950-09-19 Philco Corp Electrical system
US2559492A (en) * 1948-02-28 1951-07-03 Rca Corp Scanning control system
US2611816A (en) * 1948-02-28 1952-09-23 Rca Corp Deflection control system
US2630548A (en) * 1937-12-04 1953-03-03 Muller Egon Nicolas Cathode-ray system
US2724073A (en) * 1952-02-29 1955-11-15 F R Machine Works Testing devices

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630548A (en) * 1937-12-04 1953-03-03 Muller Egon Nicolas Cathode-ray system
US2523162A (en) * 1945-10-03 1950-09-19 Philco Corp Electrical system
US2504972A (en) * 1946-04-29 1950-04-25 Farnsworth Res Corp Picture and sound transmitter
US2559492A (en) * 1948-02-28 1951-07-03 Rca Corp Scanning control system
US2611816A (en) * 1948-02-28 1952-09-23 Rca Corp Deflection control system
US2724073A (en) * 1952-02-29 1955-11-15 F R Machine Works Testing devices

Also Published As

Publication number Publication date
GB394883A (en) 1933-07-06
NL38266C (enrdf_load_stackoverflow)

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