Convergence means for plural in-line beam cathode ray tube

Claim 2

An electron beam deflection system for use in a dynamic display apparatus employing circuitry including horizontal and vertical output sources supplying deflection signals for operating a plural in-line beam color cathode ray tube having an envelope including a viewing panel with a related cathodoluminescent screen and a neck portion traversed by said plurality of in-line electron beams emitted from an electron gun assembly oriented in a substantially common plane therein, said deflection system comprising: a beam deflection yoke positioned on said tube neck portion between said screen and said electron guns, said yoke having vertical and horizontal deflection windings arranged therein; horizontal convergence means positioned on said tube neck portion adjacent said yoke in a position relative to said electron gun assembly, said horizontal convergence means having a pair of stationary magnetic core elements oriented on either side of said gun assembly to effect both static and dynamic horizontal convergence of said beams, said horizontal static convergence means comprising an adjustable magnet positioned in each pair of said core elements, said horizontal dynamic convergence means comprising a pair of windings disposed on each pair of said stationary core elements and an adjustable inductance means coupled to each pair of said windings, said plural inductance means being connected to said horizontal output signal source and said horizontal deflection winding in said yoke in a manner to supply an induced signal to each pair of said windings; and vertical convergence means positioned on said tube neck portion adjacent said yoke in a position relative to said electron gun assembly, said vertical convergence means having a set of three stationary core elements oriented on either side of said gun assembly to effect both static and dynamic vertical convergence of said beams, said vertical static convergence means comprising a plurality of diametrically oriented magnets integrated in stacked relationship to form two similar magnetic members, one being adjustably contiguous to each set of said stationary core elements, said vertical dynamic convergence means comprising a winding disposed on one core element of each of said sets, said windings being connected to said vertical output signal source and said vertical deflection winding in said yoke.

Claim 3

A horizontal convergence device for use with a plural in-line beam color cathode ray tube having a cathodoluminescent screen and a related electron gun assembly emitting said plurality of in-line beams in a substantially common plane, said device comprising: horizontal static and dynamic convergence means oriented relative to said electron gun assembly in a common plane substantially normal to said substantially common beam plane, said static and dynamic convergence means having a common set of stationary core elements oriented on each side of said electron gun assembly, each set of side-oriented core elements having individual static and dynamic adjustment means for independently regulating the respective horizontal static and dynamic magnetic flux densities separately associated therewith; and aN insulative horizontal convergence support medium formed to locate and support said convergence means relative to said in-line beams.

Claim 4

A horizontal convergence device for use with a plural in-line beam color cathode ray tube having a cathodoluminescent screen and a related electron gun assembly emitting said plurality of in-line beams in a substantially common plane, said device comprising: horizontal static and dynamic convergence means oriented relative to said electron gun assembly in a common plane substantially normal to said substantially common beam plane, said static and dynamic convergence means having a common set of stationary core elements oriented on each side of said electron gun assembly, each set of side-oriented core elements having individual static and dynamic adjustment means for independently regulating the respective horizontal static and dynamic magnetic flux densities separately associated therewith; and aN insulative horizontal convergence support medium formed to locate and support said convergence means relative to said in-line beams.

Claim 5

In a dynamic display apparatus, horizontal dynamic convergence means for use with a plural in-line beam color cathode ray tube in conjunction with a deflection yoke including a horizontal winding for utilizing a horizontal output signal from an appropriate source, said dynamic convergence means comprising: a pair of series connected inductive coupling means interconnecting said horizontal output signal source and said horizontal winding in said yoke; and a pair of series connected convergence windings forming loads coupled to each one of said pair of inductive coupling means.

Claim 6

In a dynamic display apparatus, horizontal dynamic convergence means for use with a plural in-line beam color cathode ray tube in conjunction with a deflection yoke including a horizontal winding for utilizing a horizontal output signal from an appropriate source, said dynamic convergence means comprising: a pair of series connected inductive coupling means interconnecting said horizontal output signal source and said horizontal winding in said yoke; and a pair of series connected convergence windings forming loads coupled to each one of said pair of inductive coupling means.

Claim 7

In a dynamic display apparatus, horizontal dynamic convergence means according to claim 3 wherein said inductive coupling means are in the form of a pair of adjustable transformers having primary and secondary windings, and wherein said primary windings are series connected with each other and in series relationship with said horizontal output signal source and said horizontal winding in said yoke, and wherein each of said pairs of series connected convergence windings are coupled to the secondary winding of one of said transformers.

Claim 8

In a dynamic display apparatus, horizontal dynamic convergence means according to claim 4 wherein the phase of the current induced in the secondary winding of each transformer is in phase with the current in the primary winding thereof.

Claim 9

In a dynamic display apparatus, horizontal dynamic convergence means according to claim 5 wherein the resistance of the secondary winding does not exceed 10 percent of the inductance of that winding, and wherein the resistance of said load connected across each secondary winding does not exceed 10 percent of the inductance of the load.

Claim 10

A horizontal convergence device for use with a plural in-line beam color cathode ray tube in conjunction with a deflection yoke having a horizontal deflection winding for utilizing a horizontal output signal from an appropriate source in a dynamic display apparatus, said horizontal convergence device being formed for positioning on the exterior of the neck portion of said tube relative to the terminal electrode of an electron gun assembly oriented within said neck portion, said device comprising: horizontal static convergence means in the form of a pair of stationary magnetic core elements positioned on said neck portion on either side of said gun assembly to effect static convergence of said in-line beams, each pair of core elements having a permanent magnet adjustably positioned therebetween to regulate the static flux density therein; horizontal dynamic convergence means comprising the aforementioned pairs of stationary core elements with individual core windings disposed on each element of each pair of said stationary core elements and a plurality of adjustable inductive coupling means having primary and secondary windings, each pair of said core windings being series connected to a secondary winding of a separate inductive coupling means whereof the primary windings of said plural inductive coupling means are series connected to said horizontal output signal source and said horizontal deflection winding in said yoke; and an insulative horizontal convergence support medium formed to locate and support said convergence means relative to said tube neck portion in spaced adjacency to the electron gun assembly oriented therein.

Claim 11

A horizontal convergence device for use with a plural in-line beam color cathode ray tube in conjunction with a deflection yoke having a horizontal deflection winding for utilizing a horizontal output signal from an appropriate source in a dynamic display apparatus, said horizontal convergence device being formed for positioning on the exterior of the neck portion of said tube relative to the terminal electrode of an electron gun assembly oriented within said neck portion, said device comprising: horizontal static convergence means in the form of a pair of stationary magnetic core elements positioned on said neck portion on either side of said gun assembly to effect static convergence of said in-line beams, each pair of core elements having a permanent magnet adjustably positioned therebetween to regulate the static flux density therein; horizontal dynamic convergence means comprising the aforementioned pairs of stationary core elements with individual core windings disposed on each element of each pair of said stationary core elements and a plurality of adjustable inductive coupling means having primary and secondary windings, each pair of said core windings being series connected to a secondary winding of a separate inductive coupling means whereof the primary windings of said plural inductive coupling means are series connected to said horizontal output signal source and said horizontal deflection winding in said yoke; and an insulative horizontal convergence support medium formed to locate and support said convergence means relative to said tube neck portion in spaced adjacency to the electron gun assembly oriented therein.

Claim 12

A horizontal convergence device according to claim 7 wherein the inductive coupling in said horizontal dynamic convergence means is in the form of a transformer having primary and secondary windings and an adjustable core associated with said windings on each pair of stationary core elements, the primaries of said transformers being series connected with each other in series relationship between said horizontal output signal source and the horizontal deflection winding in said yoke, the secondary of each transformer being series connected to the two windings on each respective pair of core elements, each of said transformer cores being individually adjustable to provide in the secondaries thereof a modification of the amplitude of said output signal applied across the primaries and through the associated windings to produce the magnetic flux densities required for dynamic beam convergence.

Claim 13

A horizontal convergence device according to claim 8 wherein said transformer utilized for effecting dynamic convergence is a stepdown type of transformer and wherein the impedance of the load across the secondary winding of said transformer is less than the impedance of said secondary winding.

Claim 14

A horizontal convergence device according to claim 8 wherein the total number of turns on each pair of stationary core elements is less than the turns in the secondary winding of each of said respective transformers.

Claim 15

A vertical convergence device for use with a plural in-line beam color cathode ray tube in conjunction with a deflection yoke having a vertical deflection winding for utilizing the vertical output signal in a dynamic display apparatus to achieve convergence of the moving electron beams, said vertical convergence device being formed for positioning on the exterior of the neck portion of said tube relative to the terminal electrode of an electron gun assembly emitting three in-line beams and oriented within said neck portion, said device comprising: vertical static convergence means in the form of a set of three stationary spaced apart core elements oriented on said neck portion on each side of said gun assembly in a plane substantially normal thereto, an adjustable magnetic member positioned contiguous to each set of core elements and comprising a plurality of diametrically oriented magnetized portions arranged to provide an individual magnetized portion for each core element in each set to effect interacting substantially symmetrical magnetic fields within the region of beam influence; vertical dynamic convergence means in the form of a winding disposed on at least one of said stationary core elements in each set thereof and connected to the vertical deflection winding in said yoke, each of said windings providing magnetic flux to effect dynamic convergence of said beams; and an insulative vertical convergence support medium formed to locate and support said convergence means relative to said tube neck portion in spaced adjacency to the electron gun assembly oriented therein.

Claim 16

A vertical convergence device for use with a plural in-line beam color cathode ray tube in conjunction with a deflection yoke having a vertical deflection winding for utilizing the vertical output signal in a dynamic display apparatus to achieve convergence of the moving electron beams, said vertical convergence device being formed for positioning on the exterior of the neck portion of said tube relative to the terminal electrode of an electron gun assembly emitting three in-line beams and oriented within said neck portion, said device comprising: vertical static convergence means in the form of a set of three stationary spaced apart core elements oriented on said neck portion on each side of said gun assembly in a plane substantially normal thereto, an adjustable magnetic member positioned contiguous to each set of core elements and comprising a plurality of diametrically oriented magnetized portions arranged to provide an individual magnetized portion for each core element in each set to effect interacting substantially symmetrical magnetic fields within the region of beam influence; vertical dynamic convergence means in the form of a winding disposed on at least one of said stationary core elements in each set thereof and connected to the vertical deflection winding in said yoke, each of said windings providing magnetic flux to effect dynamic convergence of said beams; and an insulative vertical convergence support medium formed to locate and support said convergence means relative to said tube neck portion in spaced adjacency to the electron gun assembly oriented therein.

Claim 17

A vertical convergence device having dynamic convergence means according to claim 11 wherein said core windings each have a plurality of connections with tap means to provide the required magnetic flux density and flux direction to effect vertical dynamic convergence.

Claim 18

A vertical convergence device according to claim 11 wherein each of said separate adjustable magnetic members in said vertical static convergence means is in the form of a rod of magnetizable material having a longitudinal axis, said rod having a plurality of diametrical portions magnetized in a radial manner to provide a plurality of separate diametrically defined magnets each having a pair of circumferentially oriented north and south poles, said poles being aligned in a common plane containing said axis.

Claim 19

A vertical convergence device having static convergence means according to claim 13 wherein each of said magnetic members has six poles in the form of three magnetized diametrical portions longitudinally adjacent to one another to form an integration of related magnets adapted to be rotatably adjustable in a manner contiguous to related core elements, said three integrated magnets being referenced as an intermediate magnet M1 with an end magnet M2, M3 on either side thereof, said intermediate magnet having a polarity opposite that of said end magnets.

Claim 20

A vertical convergence device having static convergence means according to claim 14 wherein said magnEtic members are formed of a material having the property of magnetic retention, and wherein said diametrical portions are permanently magnetized, said magnetic members being substantially similar in the respective magnetic orientations and substantially equal in respective flux densities. 16 A vertical convergence device having static convergence means according to claim 14 wherein said end magnets M2, M3 in each of said magnetic members are magnetized to have substantially equal pole flux densities m2, m3 and wherein said intermediate magnet (M1 is magnetized to have a pole flux density m1 greater than the pole flux densities m2, m3 of either of said end magnets M2, M3: m2 m3 m1 >m2 m1 >m3

Claim 21

A vertical convergence device having static convergence means according to claim 14 wherein the three in-line electron beams subjected to convergence are referenced in relation to a magnetic member as being proximal P, center C, and distal D beams thereto, and wherein the pole flux density m2 of an end magnetized portion M2 of the respective magnetic member has a relationship with the pole flux density m1 of the related intermediate magnetized portion M1 according to the related intermediate magnetized portion M1 according to the ratio derived in the formula:

Claim 22

An electron beam convergence assembly formed for utilization with a deflection yoke on a plural in-line beam color cathode ray tube having an envelope neck portion traversed by said plurality of in-line electron beams emitted from an electron gun assembly oriented therein relative to the closed end thereof, said convergence assembly comprising: an insulative body member having an aperture therein of a dimensional size to accommodate the positioning of said body member on said tube neck, said body member having substantially equal portions extending on either side of said tube neck in a manner substantially normal thereto; a tubular crown affixed to substantially one side of said body member and extended substantially from the aperture thereof in a manner to encompass the tube neck extending therethrough, said tubular crown having a substantially slotted terminal portion; horizontal static and dynamic convergence means affixed to substantially one side of said body member relative to said electron gun assembly in said tube neck portion, said horizontal static and dynamic convergence means having a common pair of stationary core elements with separate and independent static and dynamic magnetic adjustments oriented in said body member relative to both sides of said electron gun assembly, said horizontal dynamic convergence means employing individual core windings disposed on each core element of each pair of said stationary core elements, each pair of said core windings having an adjustable inductive coupling means connected thereto; vertical static and dynamic convergence means affixed to substantially the side of said body member opposite to the positioning of said horizontal convergence means, said vertical convergence means having a set of three stationary spaced apart magnetic core elements positioned in said body member relative to both sides of said electron gun assembly, an adjustable magnetic member comprising a plurality of diametrically oriented magnetized portions positioned contiguous to each set of said core elements, each of said magnetic members having means for rotational adjustment protruding from said body member to regulate the flux density in relation to said contiguous core elements; and a compressive ring member oriented about the slotted terminal portion of said tubular crown to effect positional clamping of said tubular member on said tube neck portion.

Claim 23

An electron beam convergence assembly formed for utilization with a deflection yoke on a plural in-line beam color cathode ray tube having an envelope neck portion traversed by said plurality of in-line electron beams emitted from an electron gun assembly oriented therein relative to the closed end thereof, said convergence assembly comprising: an insulative body member having an aperture therein of a dimensional size to accommodate the positioning of said body member on said tube neck, said body member having substantially equal portions extending on either side of said tube neck in a manner substantially normal thereto; a tubular crown affixed to substantially one side of said body member and extended substantially from the aperture thereof in a manner to encompass the tube neck extending therethrough, said tubular crown having a substantially slotted terminal portion; horizontal static and dynamic convergence means affixed to substantially one side of said body member relative to said electron gun assembly in said tube neck portion, said horizontal static and dynamic convergence means having a common pair of stationary core elements with separate and independent static and dynamic magnetic adjustments oriented in said body member relative to both sides of said electron gun assembly, said horizontal dynamic convergence means employing individual core windings disposed on each core element of each pair of said stationary core elements, each pair of said core windings having an adjustable inductive coupling means connected thereto; vertical static and dynamic convergence means affixed to substantially the side of said body member opposite to the positioning of said horizontal convergence means, said vertical convergence means having a set of three stationary spaced apart magnetic core elements positioned in said body member relative to both sides of said electron gun assembly, an adjustable magnetic member comprising a plurality of diametrically oriented magnetized portions positioned contiguous to each set of said core elements, each of said magnetic members having means for rotational adjustment protruding from said body member to regulate the flux density in relation to said contiguous core elements; and a compressive ring member oriented about the slotted terminal portion of said tubular crown to effect positional clamping of said tubular member on said tube neck portion.

Claim 24

An electron beam convergence assembly according to claim 18 wherein said vertical dynamic convergence means is in thE form of a winding disposed on the intermediate core element in each set of three stationary spaced apart core elements and wherein each of said core windings has a plurality of connections with movable tap means to provide the required magnetic flux density and flux direction to effect vertical dynamic convergence.

Claim 25

An electron beam convergence assembly according to claim 18 wherein said tubular crown is oriented toward said closed end of said tube neck, and wherein said horizontal convergence means are affixed on the side of said body member adjacent said tubular crown.

Claim 26

An electron beam convergence assembly according to claim 18 wherein said tubular crown is oriented toward said closed end of said tube neck, and wherein said vertical convergence means are affixed on the side of said body member adjacent said tubular crown.

Claim 27

An electron beam controlling assembly having a plurality of beam controlling means contained therein for utilization with a deflection yoke on a plural in-line beam color cathode ray tube having an envelope neck portion traversed by said plurality of in-line electron beams emitted from an electron gun assembly oriented therein relative to the closed end thereof, said beam controlling assembly comprising the combination of: an insulative body member having an aperture therein of a dimensioned size to accommodate the positioning of said body member on said tube neck, said body member having substantially equal portions extending on either side of said tube neck in a manner substantially normal thereto; a tubular crown affixed to substantially one side of said body member and extended substantially from the aperture thereof in a manner to encompass the tube neck extending therethrough, said tubular crown having a substantially slotted terminal portion; horizontal static and dynamic convergence means affixed to substantially one side of said body member relative to said electron gun assembly in said tube neck portion, said horizontal static and dynamic convergence means having a common pair of stationary core elements and separate and independent static and dynamic magnetic adjustments positioned in said body member relative to both sides of said electron gun assembly, said horizontal dynamic convergence means employing individual core windings disposed on each core element of each pair of said stationary core elements, each pair of said core windings having an adjustable inductive coupling means connected thereto; vertical static and dynamic convergence means affixed to substantially the side of said body member opposite to the positioning of said horizontal convergence means, said vertical convergence means having a set of three stationary spaced apart magnetic core elements positioned in said body member relative to both sides of said electron gun assembly, an adjustable magnetic member comprising a plurality of diametrically oriented magnetized portions positioned contiguous to each set of said core elements; each of said magnetic members having rotational adjustment means protruding from said body member to regulate the flux density in relation to said contiguous core elements; a compressive ring member oriented about the slotted terminal portion of said tubular crown to effect positional clamping of said tubular member on said tube neck portion; and a purity ring device positioned in a manner to allow rotation on said tubular crown between said body and said compressive ring members.

Claim 28

An electron beam controlling assembly having a plurality of beam controlling means contained therein for utilization with a deflection yoke on a plural in-line beam color cathode ray tube having an envelope neck portion traversed by said plurality of in-line electron beams emitted from an electron gun assembly oriented therein relative to the closed end thereof, said beam controlling assembly comprising the combination of: an insulative body member having an aperture therein of a dimensioned size to accommodate the positioning of said body member on said tube neck, said body member having substantially equal portions extending on either side of said tube neck in a manner substantially normal thereto; a tubular crown affixed to substantially one side of said body member and extended substantially from the aperture thereof in a manner to encompass the tube neck extending therethrough, said tubular crown having a substantially slotted terminal portion; horizontal static and dynamic convergence means affixed to substantially one side of said body member relative to said electron gun assembly in said tube neck portion, said horizontal static and dynamic convergence means having a common pair of stationary core elements and separate and independent static and dynamic magnetic adjustments positioned in said body member relative to both sides of said electron gun assembly, said horizontal dynamic convergence means employing individual core windings disposed on each core element of each pair of said stationary core elements, each pair of said core windings having an adjustable inductive coupling means connected thereto; vertical static and dynamic convergence means affixed to substantially the side of said body member opposite to the positioning of said horizontal convergence means, said vertical convergence means having a set of three stationary spaced apart magnetic core elements positioned in said body member relative to both sides of said electron gun assembly, an adjustable magnetic member comprising a plurality of diametrically oriented magnetized portions positioned contiguous to each set of said core elements; each of said magnetic members having rotational adjustment means protruding from said body member to regulate the flux density in relation to said contiguous core elements; a compressive ring member oriented about the slotted terminal portion of said tubular crown to effect positional clamping of said tubular member on said tube neck portion; and a purity ring device positioned in a manner to allow rotation on said tubular crown between said body and said compressive ring members.

Claim 29

An electron beam controlling assembly according to claim 22 wherein said horizontal convergence means are affixed on the side of said body member adjacent to said purity ring device.

Claim 30

An electron beam controlling assembly according to claim 22 wherein said vertical convergence means are affixed on the side of said body member adjacent to said purity ring device.