DE2628862A1 - DEFLECTION SYSTEM FOR CATHODE BEAM TUBES - Google Patents

DEFLECTION SYSTEM FOR CATHODE BEAM TUBES

Info

Publication number
DE2628862A1
DE2628862A1 DE19762628862 DE2628862A DE2628862A1 DE 2628862 A1 DE2628862 A1 DE 2628862A1 DE 19762628862 DE19762628862 DE 19762628862 DE 2628862 A DE2628862 A DE 2628862A DE 2628862 A1 DE2628862 A1 DE 2628862A1
Authority
DE
Germany
Prior art keywords
deflection
coils
deflection system
tube
cathode ray
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.)
Ceased
Application number
DE19762628862
Other languages
German (de)
Inventor
Werner Becker
Friedrich Bender
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 GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19762628862 priority Critical patent/DE2628862A1/en
Priority to GB2607177A priority patent/GB1546301A/en
Publication of DE2628862A1 publication Critical patent/DE2628862A1/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only

Landscapes

  • Details Of Television Scanning (AREA)

Description

2628 8R?2628 8R?

ROBERT BOSCH GMBH Λ .ROBERT BOSCH GMBH Λ .

Hl.-irr.: W/76 I Holy irr .: W / 76 I.

Ablenksystem für KathodenstrahlröhrenDeflection system for cathode ray tubes

Die Erfindung betrifft ein Ablenksystem für Kathodenstrahlröhren, insbesondere Lichtpunktabtaströhren, mit H- und V-Ablenkspulen. The invention relates to a deflection system for cathode ray tubes, especially light point scanning tubes, with H and V deflection coils.

Diese Ablenksysteme weisen im allgemeinen mehr oder weniger große Geometrie- -und/oder Winkelfehler auf, was zur Verzerrung des Rasters auf dem Schirm der Abtaströhre führt. Zur Behebung dieser Verzerrungen werden üblicherweise die Ablenk— ströme entsprechend verformt. Das hat ,jedoch den Nachteil, daß wegettf^erkoppelung von Ablenkgeneratoren und Korrekturstromgenerator aufwendige Koppelglieder, wie beispielsweise Transformatoren und Transduktoren, verwendet werden müssen.These deflection systems generally have more or less large geometry and / or angle errors, which leads to distortion of the grid on the screen of the scanning tube. Deflections are commonly used to correct this distortion. currents deformed accordingly. However, this has the disadvantage that wegettf ^ coupling of deflection generators and correction current generator complex coupling elements, such as transformers and transducers, have to be used.

Die Aufgabe der vorliegenden Erfindung besteht daher darin, ein Ablenksystem für Kathodenstrahlröhren, insbesondere Abtaströhren, zu schaffen, welches eine Entzerrung des Rasters wesentlich wirtschaftlicher gestattet.The object of the present invention is therefore to provide a deflection system for cathode ray tubes, in particular scanning tubes, to create, which allows rectification of the grid much more economically.

Diese Aufgabe wird dadurch gelöst, daß zwischen diesen H- und V-Ablenkspulen und dem Bildschirm der Kathodenstrahlröhre Zusatzablenkspulen außerhalb der H- und V-Ablenkfelder angeordnet sind. Zweckmäßigerweise sind die Zusatzablenkspulen als Sattelspulen ausgebildet und im Bereich des Überganges von Röhrenhals und Röhrenkonus angeordnet.This object is achieved in that additional deflection coils between these H and V deflection coils and the screen of the cathode ray tube are arranged outside the H and V deflection fields. Appropriately, the additional deflection coils are as Saddle coils formed and arranged in the area of the transition from the tube neck and tube cone.

Da keine magnetischen und elektrischen Verkopplungen von Korrektur strom-und Ablenkgenerator bestehen, können die o. g. Koppelglieder entfallen. Außerdem wird hierbei weniger Leistung verbraucht, da die bisher vorhandene elektrische Rückwirkung der Ablenkströme nicht mehr kompensiert werden muß.Since there are no magnetic and electrical couplings between the correction current generator and the deflection generator, the above-mentioned Coupling links are omitted. In addition, less power is used here because of the previously existing electrical feedback the deflection currents no longer have to be compensated.

709882/0025709882/0025

ROBERT BOSCH GMBH „ ^-„ROBERT BOSCH GMBH "^ -"

El.-Kr.: 1742/76 *El.-Kr .: 1742/76 *

Die Erfindung soll nunmehr anhand eines Ausführungsbeispieles näher erläutert werden, wobei nur die zum Verständnis der Erfindung notwendigen Teile eingezeichnet sind. Es zeigen:The invention will now be explained in more detail using an exemplary embodiment, with only those for understanding the Invention necessary parts are shown. Show it:

Fig. 1 eine Draufsicht auf das an der Röhre befindliche Ablenksystem
Eig. 2 eine Seitenansicht der Zußatzablenkspulen.Figure 1 is a top plan view of the deflection system on the tube
Prop. Figure 2 is a side view of the auxiliary deflection coils.

Die (abgeschnitten ) dargestellte Kathodenstrahlröhre 1 trägt auf ihrem Röhrenhals 2 H- und V-Ablenkspulen 3» welche über die Klemmen 4- vom horizontalfrequenten Ablenkstrom und über die Klemmen 6 vom vertikalfrequenten Ablenkstrom gespeist werden.The (cut off) shown cathode ray tube 1 carries on its tube neck 2 H and V deflection coils 3 »which terminals 4- from the horizontal frequency deflection current and via the Terminals 6 are fed by the vertical frequency deflection current.

Erfindungsgemäß ist im Bereich des Überganges zwischen Röhrenhals 2 und Röhrenkonus 7 ein Hilfsablenkspulensystem 8 angeordnet, welches über die Klemmen 9 vom Korrekturstrom für die horizontale Abtastrichtung und über die Klemmen 11 vom Korrekturstrom für die vertikale Abtastrichtung versorgt wird. Das Hilfsablenkspulensystem 8 besteht aus je zwei sattelförmigen Halbspulen für 3ede Abtastrichtung .According to the invention, an auxiliary deflection coil system 8 is arranged in the region of the transition between tube neck 2 and tube cone 7, which is supplied via terminals 9 from the correction current for the horizontal scanning direction and via terminals 11 from the correction current for the vertical scanning direction. The auxiliary deflection coil 8 is composed of two saddle-shaped coils for half 3ede scanning.

In Pig. 2 sind die Halbspulen 21, 22 für die vertikale Abtastrichtung mit ausgezogenen Strichen dargestellt, während die auf der Zeichnung sichtbare Halbspule 23 für die horizontale Abtastrichtung gestrichelt gezeichnet ist.In Pig. 2 are the half-coils 21, 22 for the vertical scanning direction Shown with solid lines, while the half-coil visible in the drawing 23 for the horizontal Scanning direction is shown in dashed lines.

Den Hilf sablenkspulen können Korrekturströme beliebiger zeitlicher Funktion zugeführt werden. Beispielsweise ist es nicht nur möglich, zum Ausgleich von Rasterverzerrungen parabelförmige Ströme zuzuführen, sondern auch zur Verschiebung des Rasters einen Gleichstrom für die vertikale oder horizontale Abtastrichtung einzuspeisen.The auxiliary sablenkspulen can correction currents of any time Function are supplied. For example, it is not only possible to use parabolic shapes to compensate for raster distortions To supply currents, but also to shift the grid a direct current for the vertical or horizontal Feed scanning direction.

709882/002S709882 / 002S

LeerseiteBlank page

Claims (3)

ROBERT BOSCH GMBH -^- PLI/Rz/Pe Rl.-Nr.: 1742/76 25-4.1976 PatentansprücheROBERT BOSCH GMBH - ^ - PLI / Rz / Pe Rl.-No .: 1742/76 25-4.1976 patent claims 1.^Ablenksystem für Kathodenstrahlröhren, insbesondere Licht- ^-punktabtaströhren, mit H- und V-Ablenkspulen, dadurch gekennzeichnet, daß zwischen diesen H- und V-Ablenkspulen (3) und dem Bildschirm der Kathodenstrahlröhre (1) Zusatzablenkspulen (8) außerhalb der H- und V-Ablenkfelder angeordnet sind.1. ^ Deflection system for cathode ray tubes, especially light ^ -point scanning tubes, with H- and V-deflection coils, characterized in that between these H and V deflection coils (3) and the screen of the cathode ray tube (1) additional deflection coils (8) are arranged outside the H and V deflection fields. 2. Ablenksystem nach Anspruch 1, dadurch gekennzeichnet, daß die Zusatzablenkspulen (8) als Sattelspulen (21 bis 23) ausgebildet und im Bereich des Überganges von Röhrenhals (2) und Röhrenkonus (7) angeordnet sind.2. deflection system according to claim 1, characterized in that the additional deflection coils (8) as saddle coils (21 to 23) and are arranged in the region of the transition from the tube neck (2) and tube cone (7). 3. Ablenksystem nach Anspruch 2, dadurch gekennzeichnet, daß die Zusatzablenkspulen aus je zwei Halbspulen für die horizontale und vertikale Abtastrichtung bestehen.3. deflection system according to claim 2, characterized in that the additional deflection coils each from two half-coils for the horizontal and vertical scanning direction exist. 4-. Ablenksystem nach Anspruch 35 dadurch gekennzeichnet, daß die Halbspulen für die jeweilige Abtastrichtung in Reihe oder parallel geschaltet sind.4-. A deflection system according to claim 3 5, characterized in that the half-coils of the respective scan in series or in parallel. 709882/002 S ORIGINAL INSPECTED709882/002 S ORIGINAL INSPECTED
DE19762628862 1976-06-26 1976-06-26 DEFLECTION SYSTEM FOR CATHODE BEAM TUBES Ceased DE2628862A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19762628862 DE2628862A1 (en) 1976-06-26 1976-06-26 DEFLECTION SYSTEM FOR CATHODE BEAM TUBES
GB2607177A GB1546301A (en) 1976-06-26 1977-06-22 Defection system for cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762628862 DE2628862A1 (en) 1976-06-26 1976-06-26 DEFLECTION SYSTEM FOR CATHODE BEAM TUBES

Publications (1)

Publication Number Publication Date
DE2628862A1 true DE2628862A1 (en) 1978-01-12

Family

ID=5981574

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762628862 Ceased DE2628862A1 (en) 1976-06-26 1976-06-26 DEFLECTION SYSTEM FOR CATHODE BEAM TUBES

Country Status (2)

Country Link
DE (1) DE2628862A1 (en)
GB (1) GB1546301A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986005318A1 (en) * 1985-03-08 1986-09-12 Deutsche Thomson-Brandt Gmbh Image reproduction arrangement

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706909A (en) * 1969-10-28 1972-12-19 Tokyo Shibaura Electric Co Cathode ray tube with mutually intersecting focusing coils
US3849749A (en) * 1972-02-16 1974-11-19 Matsushita Electric Ind Co Ltd Deflection coils producing pincushion and barrel deflection fields

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706909A (en) * 1969-10-28 1972-12-19 Tokyo Shibaura Electric Co Cathode ray tube with mutually intersecting focusing coils
US3849749A (en) * 1972-02-16 1974-11-19 Matsushita Electric Ind Co Ltd Deflection coils producing pincushion and barrel deflection fields

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986005318A1 (en) * 1985-03-08 1986-09-12 Deutsche Thomson-Brandt Gmbh Image reproduction arrangement
DE3508210A1 (en) * 1985-03-08 1986-10-16 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen PICTURE PLAYER

Also Published As

Publication number Publication date
GB1546301A (en) 1979-05-23

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8110 Request for examination paragraph 44
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