GB408656A - Improvements in or relating to television and like systems - Google Patents

Improvements in or relating to television and like systems

Info

Publication number
GB408656A
GB408656A GB25079/32A GB2507932A GB408656A GB 408656 A GB408656 A GB 408656A GB 25079/32 A GB25079/32 A GB 25079/32A GB 2507932 A GB2507932 A GB 2507932A GB 408656 A GB408656 A GB 408656A
Authority
GB
United Kingdom
Prior art keywords
rectified
television
sept
grid
control
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
GB25079/32A
Other languages
English (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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority claimed from GB2537433A external-priority patent/GB413894A/en
Publication of GB408656A publication Critical patent/GB408656A/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
    • H04N5/165—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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
    • H03K4/39—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as an amplifier
    • H03K4/43—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as an amplifier combined with means for generating the driving pulses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
    • H04N3/04—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving aperture also apertures covered by lenses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/23—Distortion correction, e.g. for pincushion distortion correction, S-correction
    • H04N3/237—Distortion correction, e.g. for pincushion distortion correction, S-correction using passive elements, e.g. diodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/30—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines
    • H04N3/34—Elemental scanning area oscillated rapidly in direction transverse to main scanning direction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/36—Scanning of motion picture films, e.g. for telecine
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H04N5/067—Arrangements or circuits at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H04N5/067—Arrangements or circuits at the transmitter end
    • H04N5/0675—Arrangements or circuits at the transmitter end for mixing the synchronising signals with the picture signal or mutually
    • 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
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3147—Multi-projection systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Television Systems (AREA)
  • Picture Signal Circuits (AREA)
  • Details Of Television Scanning (AREA)
GB25079/32A 1931-09-26 1932-09-08 Improvements in or relating to television and like systems Expired GB408656A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US565226A US2289914A (en) 1931-09-26 1931-09-26 Television system
US401990XA 1932-05-28 1932-05-28
GB2537433A GB413894A (en) 1933-09-13 1933-09-13 Improvements in or relating to television systems

Publications (1)

Publication Number Publication Date
GB408656A true GB408656A (en) 1934-04-09

Family

ID=31950339

Family Applications (2)

Application Number Title Priority Date Filing Date
GB25079/32A Expired GB408656A (en) 1931-09-26 1932-09-08 Improvements in or relating to television and like systems
GB15496/33A Expired GB401990A (en) 1931-09-26 1933-05-29 Improvements in or relating to television and like systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB15496/33A Expired GB401990A (en) 1931-09-26 1933-05-29 Improvements in or relating to television and like systems

Country Status (6)

Country Link
US (1) US2289914A (xx)
BE (12) BE371688A (xx)
DE (2) DE755140C (xx)
FR (3) FR699544A (xx)
GB (2) GB408656A (xx)
NL (2) NL39554C (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564554A (en) * 1947-10-09 1951-08-14 Rca Corp Background control and synchronizing signal separating circuit

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE402568A (xx) * 1933-04-13
DE741454C (de) * 1934-12-20 1943-11-11 Telefunken Gmbh Anordnung zur Erzeugung eines saegezahnfoermigen Stromverlaufs, insbesondere fuer die magnetische Ablenkung von Kathodenstrahlen fuer Oszillographen- und Fernsehzwecke
DE889309C (de) * 1935-02-06 1953-09-10 Telefunken Gmbh Schaltungsanordnung zur Erzeugung eines saegezahnfoermigen Stromverlaufs zur magnetischen Ablenkung von Kathodenstrahlen, insbesondere fuer Fernsehzwecke
DE763069C (de) * 1935-02-28 1953-02-09 Rca Corp Schaltungsanordnung zur Phasenverschiebung von Impulsen
DE755243C (de) * 1935-05-25 1954-12-13 Opta Radio A G Anordnung zur Ablenkung des Kathodenstrahls in Kathodenstrahlroehren durch langsame Aufladung und ploetzliche nicht-lineare Entladung eines Kondensators
DE1018098B (de) * 1935-08-06 1957-10-24 Fernseh Gmbh Anordnung zur Synchronisierung mehrerer Sendestellen von einer zentralen Stelle aus bei Fernseh- und Bilduebertragungen
BE418067A (xx) * 1935-10-25
US2140004A (en) * 1936-02-03 1938-12-13 Rca Corp Electrical oscillation generator
GB479113A (en) * 1936-04-29 1938-01-31 Alan Dower Blumlein Improvements in or relating to thermionic valve circuits particularly for use in television
GB479760A (en) * 1936-08-10 1938-02-10 Baird Television Ltd Improvements in or relating to television and like systems
DE755117C (de) * 1936-09-15 1951-07-26 Fernseh Gmbh Anordnung zur Erzeugung einer Anodenspannung fuer Elektronen-strahlroehren durch Gleichrichtung einer zur elektromagnetischen Strahlablenkung dienenden Kippschwingung
DE755706C (de) * 1936-11-27 1954-11-29 Opta Radio A G Verfahren zur Erzeugung der Zeilen- und Bildwechselzeichen bei Fernsehsendern
DE741785C (de) * 1937-11-29 1943-11-17 Fernseh Gmbh Verfahren zur UEbertragung von Fernsehbildern, deren Helligkeitsumfang geringer ist als der zur Verfuegung stehende Modulationsbereich
DE741537C (de) * 1938-01-11 1943-11-12 Fernseh Gmbh Schaltanordnung zur selbsttaetigen Beseitigung der bei elektromagnetischer Strahlablenkung auftretenden Verzerrungen
DE758006C (de) * 1939-02-26 1953-02-16 Telefunken Gmbh Stromsaegezahngenerator mit einem Parallelresonanzkreis, der aus einer Ablenkspule und ihrer Eigenkapazitaet besteht, und einer transformatorisch spannungsrueckgekoppelten Roehre
DE756444C (de) * 1939-05-13 1953-01-19 Aeg Anordnung zum Linearisieren von aus Teilen einer Exponentialkurve bestehenden Kippschwingungen
US2548436A (en) * 1946-01-25 1951-04-10 Hazeltine Corp Television receiver background control circuit
BE518173A (xx) * 1950-06-25
DE1022683B (de) * 1953-01-08 1958-01-16 Cie Generale D Electricite Soc Verstaerker mit zeitlich veraenderlicher frequenzabhaengiger Verstaerkungs- und Phasendreh-Charakteristik
DE1274624B (de) * 1955-01-07 1968-08-08 Friedrich Herz Verfahren zur Ablenkung des Kathodenstrahles beim Fernsehen durch sinusfoermige Spannungen abgeleitete Zeilen- und Bildablenkspannungen
US3293483A (en) * 1962-01-08 1966-12-20 Siemens Ag Radiation controlled electron radiation source

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT113936B (de) * 1926-10-19 1929-08-10 Siemens Ag Einrichtung zur Amplitudenbegrenzung.
DE482874C (de) * 1927-01-03 1929-09-21 Gen Electric Empfangsanordnung fuer hochfrequente Signalstroeme mit automatischer Begrenzung der Signallautstaerke

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564554A (en) * 1947-10-09 1951-08-14 Rca Corp Background control and synchronizing signal separating circuit

Also Published As

Publication number Publication date
FR741099A (xx) 1933-02-04
NL61555B (xx)
NL39554C (nl) 1936-12-15
BE396560A (xx)
BE398015A (xx)
DE755140C (de) 1953-03-09
BE391266A (xx)
GB401990A (en) 1933-11-23
BE371688A (xx) 1930-09-30
BE377922A (xx)
US2289914A (en) 1942-07-14
BE390395A (xx)
BE387822A (xx)
BE389285A (xx)
FR39840E (fr) 1932-03-24
BE395907A (xx)
BE393588A (xx)
FR699544A (fr) 1931-02-16
BE371659A (xx) 1930-08-30
DE648195C (de) 1937-07-24
BE390958A (xx)

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