Deflection yoke with bridge-connected windings

Claim 2

Means for effecting the periodic deflection of an electron beam within a cathode ray tube, comprising: core means adapted to be disposed about the neck of the cathode ray tube; a first pair of windings disposed on said core means for deflecting the electron beams in a first direction; a second pair of windings disposed on said core means for deflecting the electron beam in a second direction substantially perpendicular to the first direction; first, second, third, and fourth windings disposed on said core means and connected in series relationship with one another to form a closed loop, said first and said second windings each having at least one turn disposed intermediate the ends of the other; said third and said fourth windings each having at least one turn disposed intermediate the ends of the other; means for coupling the junction of said first and said second, and the junction of said third and fourth, windings in series circuit relationship with said first pair of windings across a first source of deflection signals; and means for coupling the junction of said second and third, and the junction of said fourth and first, windings in series circuit relationship with said second pair of windings across a second source of deflection signals.

Claim 3

The invention defined in claim 1, wherein said turns disposed intermediate the ends of another winding are disposed upon the core means in such a manner that deflection signals from the second source produce magnetic flux which aids, and deflection signals from the first source produce magnetic flux which opposes, the flux produced by the winding intermediate whose ends said turns are disposed.

Claim 4

The invention defined in claim 1, wherein said first pair of windings is adapted to deflect the electron beams in a horizontal direction, and said second pair of windings is adapted to deFlect the electron beams in a vertical direction.

Claim 5

In a color television receiver including a cathode ray tube having electron gun means adapted to produce a plurality of electron beams, means for periodically deflecting the electron beams, comprising: annular core means adapted to be disposed about the neck of the cathode ray tube; a first pair of windings associated with said core means for deflecting the electron beams in a direction perpendicular to a given plane; a second pair of windings associated with said core means for deflecting the electron beams in a direction substantially parallel to said given plane; first, second, third, and fourth windings disposed on said core means connected in series relationship with one another to form a closed loop, each of said first, second, third, and fourth windings comprising a first and a second segment; the second segments of said first and second windings being disposed on said core means intermediate the first and second segments of the other; the second segments of said third and fourth windings being disposed on said core means intermediate the first and second segments of the other; means for coupling the junctions of said first and said second, and third and said fourth, windings in series circuit relationship with said first pair of windings across a first source of deflection signals; and means for coupling the junctions of said second and third, and said fourth and first, windings in series circuit relationship with said second pair of windings across a second source of deflection signals.

Claim 6

In a color television receiver including a cathode ray tube having electron gun means adapted to produce a plurality of electron beams, means for periodically deflecting the electron beams, comprising: annular core means adapted to be disposed about the neck of the cathode ray tube; a first pair of windings associated with said core means for deflecting the electron beams in a direction perpendicular to a given plane; a second pair of windings associated with said core means for deflecting the electron beams in a direction substantially parallel to said given plane; first, second, third, and fourth windings disposed on said core means connected in series relationship with one another to form a closed loop, each of said first, second, third, and fourth windings comprising a first and a second segment; the second segments of said first and second windings being disposed on said core means intermediate the first and second segments of the other; the second segments of said third and fourth windings being disposed on said core means intermediate the first and second segments of the other; means for coupling the junctions of said first and said second, and third and said fourth, windings in series circuit relationship with said first pair of windings across a first source of deflection signals; and means for coupling the junctions of said second and third, and said fourth and first, windings in series circuit relationship with said second pair of windings across a second source of deflection signals.

Claim 7

The invention defined in claim 4, wherein said second segments of said windings are disposed on said core means in such a manner that deflection current from the second source of deflection signals produces magnetic fluxes about the second segments which aid, and deflection current from the first source of deflection signals produces magnetic fluxes about the second segments which oppose, the fluxes produced by the winding intermediate whose segments they are disposed.

Claim 8

In a television receiver containing deflection apparatus for deflecting the electron beams of the cathode ray tube, said deflection apparatus including a core for receiving the neck portion of said cathode ray tube and horizontal and vertical windings wound on said core, wherein proper deflection of said electron beams requires sufficient windings such that adjacent horizontal and vertical windings are ordinarily caused to overlap, the improvement comprising: first, second, third and fourth auxiliary windings wound on said core, each of said auxiliary windings having turns proportional to the number of overlapped turns between adjacent horizontal and vertical windings, each auxiliary winding replacing the overlapped portion of each of adjacent horizontal and vertical windings such that shortened horizontal and vertical windings are utilized, said auxiliary windings being serially interconnected to form a closed loop, said shortened horizontal windings connecting selected alternate junctions of said auxiliary windings to a source of horizontal deflection signals, and said shortened vertical windings connecting the other junctions of said auxiliary windings to a source of vertical deflection signals.

Claim 9

In a television receiver containing deflection apparatus for deflecting the electron beams of the cathode ray tube, said deflection apparatus including a core for receiving the neck portion of said cathode ray tube and horizontal and vertical windings wound on said core, wherein proper deflection of said electron beams requires sufficient windings such that adjacent horizontal and vertical windings are ordinarily caused to overlap, the improvement comprising: first, second, third and fourth auxiliary windings wound on said core, each of said auxiliary windings having turns proportional to the number of overlapped turns between adjacent horizontal and vertical windings, each auxiliary winding replacing the overlapped portion of each of adjacent horizontal and vertical windings such that shortened horizontal and vertical windings are utilized, said auxiliary windings being serially interconnected to form a closed loop, said shortened horizontal windings connecting selected alternate junctions of said auxiliary windings to a source of horizontal deflection signals, and said shortened vertical windings connecting the other junctions of said auxiliary windings to a source of vertical deflection signals.

Claim 10

The improved deflection apparatus recited in claim 6 wherein said horizontal and vertical windings each contain a pair of windings, one of said shortened horizontal windings being connected to the junction between the first and second auxiliary windings, the other of said shortened horizontal windings being connected to the junction between said third and fourth auxiliary windings, one of said shortened vertical windings being connected to the junction between said second and third auxiliary windings, the other of said shortened vertical windings being connected to the junction between said fourth and first auxiliary windings.

Claim 11

In a television receiver deflection apparatus For deflecting the electron beams in the cathode ray tube comprising: a core for receiving the neck portion of said cathode ray tube, horizontal windings, vertical windings and first, second, third and fourth auxiliary windings contiguously wound on said core, said first, second, third and fourth auxiliary windings being serially interconnected to form a closed loop, said horizontal windings connecting the junctions between said first and second and third and fourth auxiliary windings to a source of horizontal deflection signals to form a series connection between said horizontal windings, the source of horizontal signals and said auxiliary windings, said vertical windings connecting the junctions between said second and third and fourth and first auxiliary windings to a source of vertical deflection signals to form a series connection between said vertical windings, the source of vertical signals and said auxiliary windings.

Claim 12

In a television receiver deflection apparatus For deflecting the electron beams in the cathode ray tube comprising: a core for receiving the neck portion of said cathode ray tube, horizontal windings, vertical windings and first, second, third and fourth auxiliary windings contiguously wound on said core, said first, second, third and fourth auxiliary windings being serially interconnected to form a closed loop, said horizontal windings connecting the junctions between said first and second and third and fourth auxiliary windings to a source of horizontal deflection signals to form a series connection between said horizontal windings, the source of horizontal signals and said auxiliary windings, said vertical windings connecting the junctions between said second and third and fourth and first auxiliary windings to a source of vertical deflection signals to form a series connection between said vertical windings, the source of vertical signals and said auxiliary windings.

Claim 13

The deflection apparatus recited in claim 8 wherein said horizontal windings comprise first and second windings, the first horizontal winding connecting the junction between said first and second auxiliary windings to the source of horizontal signals, the second horizontal winding connecting the junction between said third and fourth auxiliary windings to the source of horizontal signals, and said vertical windings comprise first and secone windings, the first vertical winding connecting the junction between said second and third auxiliary windings to the source of vertical signals, the second vertical winding connecting the junction between said fourth and first auxiliary windings to the source of vertical signals.

Claim 14

The deflection apparatus as recited in claim 8 wherein said horizontal windings and said auxiliary windings comprise a first set of windings disposed about a first pair of diametrically opposite points on said core and being arranged about each of said points to provide an effective winding distribution substantially characterized by sin phi + 0.08 sin(3 phi ) where phi represents the angular displacement from the geometric center of the winding, and said vertical windings and said auxiliary windings comprise a second set of windings disposed about a second pair of diametrically opposite points on said core displaced substantially 90* from the first points and being arranged about each of said second points to provide an effective winding distribution substantially characterized by sin phi -0.06 sin(3 phi ).

Claim 15

The invention defined in claim 5 wherein said first pair of windings and said first, second, third and fourth windings comprise a first set of windings disposed about a first pair of diametrically opposite points on said core and being arranged about each of said points to provide an effective winding distribution of substantially sinusoidal form, and said second pair of windings and said first, second, third and fourth windings comprise a second set of windings disposed about a second pair of diametrically opposite points on said core displaced substantially 90* from the first points and being arranged about each of said second points to provide an effective winding distribution substantially characterized by sin phi + 0.04 sin(3 phi ) + 0.016 sin(5 phi ) where phi represents the angular displacement from the geometric center of the winding.