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GB1143241A - Improvements in television synchronising pulse separators - Google Patents

Improvements in television synchronising pulse separators

Info

Publication number
GB1143241A
GB1143241A GB2558766A GB2558766A GB1143241A GB 1143241 A GB1143241 A GB 1143241A GB 2558766 A GB2558766 A GB 2558766A GB 2558766 A GB2558766 A GB 2558766A GB 1143241 A GB1143241 A GB 1143241A
Authority
GB
United Kingdom
Prior art keywords
point
circuit
feed
points
storage capacitor
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
GB2558766A
Inventor
John Victor Corney
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.)
Thorn Electronics Ltd
Original Assignee
Thorn Electronics 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 GB174665A priority Critical patent/GB1027019A/en
Application filed by Thorn Electronics Ltd filed Critical Thorn Electronics Ltd
Priority to GB2558766A priority patent/GB1143241A/en
Publication of GB1143241A publication Critical patent/GB1143241A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Synchronizing For Television (AREA)
  • Picture Signal Circuits (AREA)

Abstract

1,143,241. Television synchronizing-pulse separator circuit. THORN ELECTRONICS Ltd. 8 June, 1966, No. 22587/66. Addition to 1,029,019. Heading H4F. The synchronizing-pulse separator circuit described in Specification 1,027,019 is modified by the addition of a storage capacitor C3 at the output of clamp N in the first feed-back path of the differential amplifier I. The resistor R5 of the feed-back path is also separate from the input resistor R1. A consequential modification involves the connection of the potentiometer R3, R4, which determines the threshold potential of separator means K, between points Z and D instead of points Z and W. The alternative connection for capacitor C2 is also changed from point W to point Q. To preserve circuit symmetry the storage capacitor C3 may also be provided with an alternative connection to point Q. A detailed transistor circuit incorporating the invention is described with reference to Fig. 2 (not shown).
GB2558766A 1966-06-08 1966-06-08 Improvements in television synchronising pulse separators Expired GB1143241A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB174665A GB1027019A (en) 1966-06-08 1965-01-14 Improvements in television synchronising pulse separators
GB2558766A GB1143241A (en) 1966-06-08 1966-06-08 Improvements in television synchronising pulse separators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2558766A GB1143241A (en) 1966-06-08 1966-06-08 Improvements in television synchronising pulse separators

Publications (1)

Publication Number Publication Date
GB1143241A true GB1143241A (en) 1969-02-19

Family

ID=10230095

Family Applications (2)

Application Number Title Priority Date Filing Date
GB174665A Expired GB1027019A (en) 1966-06-08 1965-01-14 Improvements in television synchronising pulse separators
GB2558766A Expired GB1143241A (en) 1966-06-08 1966-06-08 Improvements in television synchronising pulse separators

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB174665A Expired GB1027019A (en) 1966-06-08 1965-01-14 Improvements in television synchronising pulse separators

Country Status (1)

Country Link
GB (2) GB1027019A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2120046A1 (en) * 1970-12-28 1972-08-11 Tektronix Inc
FR2363951A1 (en) * 1976-09-07 1978-03-31 Tektronix Inc CIRCUIT FOR PRECISELY EXTRACTING THE SYNCHRONIZATION INFORMATION CONTAINED IN A COMPOSITE VIDEO WAVEFORM
US4821098A (en) * 1984-06-20 1989-04-11 U.S. Philips Corporation Circuit for deriving a synchronizing signal contained in an incoming video signal
US5486869A (en) * 1992-02-18 1996-01-23 Cooper; J. Carl Synchronizing signal separating apparatus and method
US5754250A (en) * 1992-02-18 1998-05-19 Cooper; J. Carl Synchronizing signal separating apparatus and method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2120046A1 (en) * 1970-12-28 1972-08-11 Tektronix Inc
FR2363951A1 (en) * 1976-09-07 1978-03-31 Tektronix Inc CIRCUIT FOR PRECISELY EXTRACTING THE SYNCHRONIZATION INFORMATION CONTAINED IN A COMPOSITE VIDEO WAVEFORM
US4821098A (en) * 1984-06-20 1989-04-11 U.S. Philips Corporation Circuit for deriving a synchronizing signal contained in an incoming video signal
US5486869A (en) * 1992-02-18 1996-01-23 Cooper; J. Carl Synchronizing signal separating apparatus and method
US5754250A (en) * 1992-02-18 1998-05-19 Cooper; J. Carl Synchronizing signal separating apparatus and method
USRE40412E1 (en) 1992-02-18 2008-07-01 Cooper J Carl Synchronizing signal separating apparatus and method
USRE40411E1 (en) * 1992-02-18 2008-07-01 Cooper J Carl Synchronizing signal separating apparatus and method

Also Published As

Publication number Publication date
GB1027019A (en) 1966-04-20

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