GB876124A - Circuits for separating longer impulses from a mixture of longer and shorter impulses - Google Patents

Circuits for separating longer impulses from a mixture of longer and shorter impulses

Info

Publication number
GB876124A
GB876124A GB4108959A GB4108959A GB876124A GB 876124 A GB876124 A GB 876124A GB 4108959 A GB4108959 A GB 4108959A GB 4108959 A GB4108959 A GB 4108959A GB 876124 A GB876124 A GB 876124A
Authority
GB
United Kingdom
Prior art keywords
longer
pulses
impulses
circuit
conducting
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
GB4108959A
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 GB876124A publication Critical patent/GB876124A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
    • G01R29/027—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values
    • G01R29/0273—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values the pulse characteristic being duration, i.e. width (indicating that frequency of pulses is above or below a certain limit)
    • 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
    • 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
    • H04N5/10—Separation of line synchronising signal from frame synchronising signal or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rectifiers (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Details Of Television Scanning (AREA)

Abstract

876,124. Pulse discriminating circuits. FERNSEH G.m.b.H. Dec. 3, 1959 [Dec. 3, 1958], No. 41089/59. Drawings to Specification. Addition to 859,881. Class 40(6) The invention relates to a circuit of the type described in the parent Specification for producing pulses corresponding to the longer pulses of a mixture of longer and shorter pulses, e.g. mixed line and frame television synchronizing pulses, in which the pulses are fed to tuned circuit connected in parallel with a rectifier so that an appreciable voltage is built up in the circuit only during the longer pulses. According to the invention, the rectifier is of the semi-conductor type and is biased so as to be conducting for any forward signal voltage. The circuit may be connected in the anode path of a valve which is normally either non-conducting or conducting (Figs. 1 and 4 not shown) and the bias may be provided by the current through the resistance of the inductance of the tuned circuit (Fig. 5, not shown).
GB4108959A 1957-08-09 1959-12-03 Circuits for separating longer impulses from a mixture of longer and shorter impulses Expired GB876124A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF23718A DE1086275B (en) 1957-08-09 1957-08-09 Circuit arrangement for emphasizing the vertical sync pulses from the sync pulse mixture of a television signal

Publications (1)

Publication Number Publication Date
GB876124A true GB876124A (en) 1961-08-30

Family

ID=7090960

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2549158A Expired GB859881A (en) 1957-08-09 1958-08-08 Improvements in or relating to synchronising signal separator circuits
GB4108959A Expired GB876124A (en) 1957-08-09 1959-12-03 Circuits for separating longer impulses from a mixture of longer and shorter impulses

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB2549158A Expired GB859881A (en) 1957-08-09 1958-08-08 Improvements in or relating to synchronising signal separator circuits

Country Status (2)

Country Link
DE (1) DE1086275B (en)
GB (2) GB859881A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1174827B (en) * 1961-10-10 1964-07-30 Blaupunkt Werke Gmbh Circuit arrangement for a television receiver
DE1270081B (en) * 1962-11-30 1968-06-12 Imp Rundfunk Und Fernsehwerk G Circuit arrangement for converting pulses
DE1274176B (en) * 1967-02-25 1968-08-01 Fernseh Gmbh Arrangement for deriving interference-free synchronization information from the synchronization signal of a television signal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1111555A (en) * 1953-08-12 1956-03-01 Thomson Houston Comp Francaise Pulse discriminator circuit

Also Published As

Publication number Publication date
GB859881A (en) 1961-01-25
DE1086275B (en) 1960-08-04

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