GB9014584D0 - Controlling or deriving direct current levels - Google Patents

Controlling or deriving direct current levels

Info

Publication number
GB9014584D0
GB9014584D0 GB909014584A GB9014584A GB9014584D0 GB 9014584 D0 GB9014584 D0 GB 9014584D0 GB 909014584 A GB909014584 A GB 909014584A GB 9014584 A GB9014584 A GB 9014584A GB 9014584 D0 GB9014584 D0 GB 9014584D0
Authority
GB
United Kingdom
Prior art keywords
controlling
direct current
current levels
deriving direct
deriving
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.)
Withdrawn
Application number
GB909014584A
Other versions
GB2245793A (en
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Priority to GB9014584A priority Critical patent/GB2245793A/en
Publication of GB9014584D0 publication Critical patent/GB9014584D0/en
Publication of GB2245793A publication Critical patent/GB2245793A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/165—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Manipulation Of Pulses (AREA)
  • Picture Signal Circuits (AREA)
GB9014584A 1990-06-29 1990-06-29 Controlling or deriving direct current level of video signals Withdrawn GB2245793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9014584A GB2245793A (en) 1990-06-29 1990-06-29 Controlling or deriving direct current level of video signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9014584A GB2245793A (en) 1990-06-29 1990-06-29 Controlling or deriving direct current level of video signals

Publications (2)

Publication Number Publication Date
GB9014584D0 true GB9014584D0 (en) 1990-08-22
GB2245793A GB2245793A (en) 1992-01-08

Family

ID=10678481

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9014584A Withdrawn GB2245793A (en) 1990-06-29 1990-06-29 Controlling or deriving direct current level of video signals

Country Status (1)

Country Link
GB (1) GB2245793A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9417418D0 (en) * 1994-08-30 1994-10-19 Plessey Semiconductors Ltd Semiconductor circuit arrangement
EP0700200A3 (en) * 1994-08-30 1996-07-10 Plessey Semiconductors Ltd Video sync tip clamp circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3214756C2 (en) * 1981-05-02 1991-10-17 Philips Patentverwaltung Gmbh, 2000 Hamburg Circuit arrangement for determining the value of a reference level

Also Published As

Publication number Publication date
GB2245793A (en) 1992-01-08

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)