GB878649A - Improvements in circuit arrangements for clamping a signal to a reference potential - Google Patents

Improvements in circuit arrangements for clamping a signal to a reference potential

Info

Publication number
GB878649A
GB878649A GB11560/59A GB1156059A GB878649A GB 878649 A GB878649 A GB 878649A GB 11560/59 A GB11560/59 A GB 11560/59A GB 1156059 A GB1156059 A GB 1156059A GB 878649 A GB878649 A GB 878649A
Authority
GB
United Kingdom
Prior art keywords
reference potential
clamping
signal
circuit arrangements
april
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
GB11560/59A
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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh GmbH
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 Fernseh GmbH filed Critical Fernseh GmbH
Publication of GB878649A publication Critical patent/GB878649A/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
    • H04N5/14—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
    • H04N5/18—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
    • H04N5/185—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level
    • 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
    • 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)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

878,649. Transistor switching circuits. FERNSEH G.m.b.H. April 6, 1959 [April 5, 1958], No. 11560/59. Class 40(6) [Also in Group XL(b)] A circuit for clamping the output of an amplifier to a reference potential comprises a pair of complementary transistors 7, 7<SP>1</SP> having their collectors connected to the amplifier output terminal, their emitters connected to the reference potential source 8 and their bases connected to a source of pulses 11, 11<SP>1</SP> which renders the transistors conducting.
GB11560/59A 1958-04-05 1959-04-06 Improvements in circuit arrangements for clamping a signal to a reference potential Expired GB878649A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE878649X 1958-04-05

Publications (1)

Publication Number Publication Date
GB878649A true GB878649A (en) 1961-10-04

Family

ID=6818634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11560/59A Expired GB878649A (en) 1958-04-05 1959-04-06 Improvements in circuit arrangements for clamping a signal to a reference potential

Country Status (2)

Country Link
FR (1) FR1218764A (en)
GB (1) GB878649A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1172300B (en) * 1962-07-11 1964-06-18 Fernseh Gmbh Method and circuit arrangement for transmitting a video signal
NL297567A (en) * 1962-09-07 1900-01-01

Also Published As

Publication number Publication date
FR1218764A (en) 1960-05-12

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