US3668580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toroidal deflection yoke having asymmetrical windings
Assignee: RCA Licensing Corp
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Filing: 1970-12-07
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Granted: 1972-06-06
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Expires: 1990-12-07
Abstract
Abstract A toroidal deflection yoke for a delta gun shadow mask color television picture tube includes windings having asymmetric conductor distributions to correct for effects such as unsymmetrical misconvergence of the electron beams across the scanned raster. For convergence which is unsymmetrical top to bottom, an asymmetric change top to bottom is made in the conductor distribution in either the horizontal or vertical coil windings and for convergence which is unsymmetrical left to right an asymmetric change left to right is made in the conductor distributions in either the horizontal or vertical coil windings.
Inventors
- 👤 Robert Lloyd Barbin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:58
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/72; H01J29/76; H01J29/764
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
112 words
A toroidal deflection yoke for a delta gun shadow mask color television picture tube displaying a raster having unsymmetrical convergence along one of the deflection axes, comprising: vertical and horizontal coil winding portions in each of four quadrants defined by the vertical and horizontal deflection axes, the conductor distribution of one of the vertical and horizontal coil winding portions in a first quadrant being selected to be asymmetrical relative to the winding distribution of the corresponding one of the vertical and horizontal coil winding portions of a second quadrant adjacent said first quadrant, said first aNd second quadrants lying on one side of the deflection axis along which said unsymmetrical convergence appears
Claim 2
Dependent Claim
112 words
A toroidal deflection yoke for a delta gun shadow mask color television picture tube displaying a raster having unsymmetrical convergence along one of the deflection axes, comprising: vertical and horizontal coil winding portions in each of four quadrants defined by the vertical and horizontal deflection axes, the conductor distribution of one of the vertical and horizontal coil winding portions in a first quadrant being selected to be asymmetrical relative to the winding distribution of the corresponding one of the vertical and horizontal coil winding portions of a second quadrant adjacent said first quadrant, said first aNd second quadrants lying on one side of the deflection axis along which said unsymmetrical convergence appears
Claim 3
Dependent Claim
58 words
A toroidal deflection yoke according to claim 1 wherein said raster displays unsymmetrical top to bottom convergence and the conductor distribution of coil winding portions of one of two adjacent top and bottom quadrants bounded by the vertical deflection axis is asymmetric relative to the conductor distribution of corresponding coil winding portions in the other of said quadrants.
Claim 4
Dependent Claim
58 words
A toroidal deflection yoke according to claim 1 wherein said raster displays unsymmetrical left to right convergence and the conductor distribution of coil winding portions of one of two adjacent left and right quadrants bounded by the horizontal deflection axis is asymmetric relative to the conductor distribution of corresponding coil winding portions in the other of said quadrants.
Claim 5
Dependent Claim
200 words
A toroidal deflection yoke for a delta gun shadow mask color television picture tube in which tube the electron beams are unsymmetrically misconverged top to bottom and left to right, comprising: vertical and horizontal coil winding portions in each of four quadrants defined by the vertical and horizontal deflection axes of said yoke; the conductor distribution of at least one of the vertical and horizontal coil winding portions in one of adjacent quadrants on one side of and bounded by the vertical deflection axis being asymmetric relative to the coil winding distribution of the corresponding at least one of the vertical and horizontal coil winding portions of the other of said adjacent quadrants for producing a magnetic field for correcting said unsymmetrical top to bottom misconvergence; and the conductor distribution of at least one of the vertical and horizontal coil winding portions in one of adjacent quadrants on one side of and bounded by the horizontal deflection axis being asymmetric relative to the coil winding distribution of the corresponding at least one of the vertical and horizontal coil winding portions of the other of said adjacent quadrants for producing a magnetic field for correcting said unsymmetrical left to right misconvergence.
Claim 6
Dependent Claim
200 words
A toroidal deflection yoke for a delta gun shadow mask color television picture tube in which tube the electron beams are unsymmetrically misconverged top to bottom and left to right, comprising: vertical and horizontal coil winding portions in each of four quadrants defined by the vertical and horizontal deflection axes of said yoke; the conductor distribution of at least one of the vertical and horizontal coil winding portions in one of adjacent quadrants on one side of and bounded by the vertical deflection axis being asymmetric relative to the coil winding distribution of the corresponding at least one of the vertical and horizontal coil winding portions of the other of said adjacent quadrants for producing a magnetic field for correcting said unsymmetrical top to bottom misconvergence; and the conductor distribution of at least one of the vertical and horizontal coil winding portions in one of adjacent quadrants on one side of and bounded by the horizontal deflection axis being asymmetric relative to the coil winding distribution of the corresponding at least one of the vertical and horizontal coil winding portions of the other of said adjacent quadrants for producing a magnetic field for correcting said unsymmetrical left to right misconvergence.
Claim 7
Dependent Claim
89 words
A toroidal defection yoke according to claim 4 wherein the conductor distribution of the horizontal coil winding portions of one of adjacent quadrants bounded by the vertical deflection axes is asymmetrical relative to the conductor of the other of said adjacent quadrants bounded by said vertical deflection axis; and the conductor distribution of the horizontal coil winding portions of one of adjacent quadrants bounded by the horizontal deflection axis is asymmetrical relative to the conductor distribution of the other of said adjacent quadrants bounded by said horizontal deflection axis.
Claim 8
Dependent Claim
89 words
A toroidal deflection yoke according to claim 4 wherein the conductor distribution of the vertical coil winding portions of one of adjacent quadrants bounded by the vertical deflection axes is asymmetrical relative to the conductor of the other of said adjacent quadrants bounded by said vertical deflection axis; and the conductor distribution of the vertical coil winding portions of one of adjacent quadrants bounded by the horizontal deflection axis is asymmetrical relative to the conductor distribution of the other of said adjacent quadrants bounded by said horizontal deflection axis.
Claim 9
Dependent Claim
104 words
A toroidal deflection yoke according to claim 4 wherein the conductor distribution of both horizontal and vertical coil winding portions in one of two adjacent quadrants bounded by the vertical deflection axis is asymmetric relative to the corresponding horizontal and vertical coil winding portions in the other of said quadrants bounded by the vertical deflection axis; and the conductor distribution of both horizontal and vertical coil winding portions in one of two adjacent quadrants bounded by the horizontal deflection axis is asymmetric relative to the corresponding horizontal and vertical coil winding portions in the oTher of said quadrants bounded by the horizontal deflection axis.
Claim 10
Dependent Claim
224 words
A toroidal deflection yoke for a delta gun shadow mask color television picture tube, the electron beams of which picture tube are unsymmetrically converged top to bottom and left to right, comprising: vertical and horizontal coil winding portions in each of four quadrants defined by the deflection axes of the yoke, the number of conductor turns in each coil winding portion being the same in all of said quadrants; the distribution of conductors of at least one of the vertical and horizontal coil winding portions in one of two adjacent quadrants on one side of and bounded by the vertical deflection axis being asymmetric relative to the conductor distribution of the corresponding at least one of the vertical and horizontal coil winding portions in the other of said two adjacent quadrants for producing a deflection field such as to correct said top to bottom unsymmetrical misconvergence; and the distribution of conductors of at least one of the vertical and horizontal coil winding portions in one of two adjacent quadrants on one side of and bounded by the horizontal deflection axis being asymmetric relative to the conductor distribution of the corresponding at least one of the vertical and horizontal coil winding portions in the other of said two adjacent quadrants for producing a deflection field such as to correct said left to right unsymmetrical misconvergence.
Claim 11
Dependent Claim
224 words
A toroidal deflection yoke for a delta gun shadow mask color television picture tube, the electron beams of which picture tube are unsymmetrically converged top to bottom and left to right, comprising: vertical and horizontal coil winding portions in each of four quadrants defined by the deflection axes of the yoke, the number of conductor turns in each coil winding portion being the same in all of said quadrants; the distribution of conductors of at least one of the vertical and horizontal coil winding portions in one of two adjacent quadrants on one side of and bounded by the vertical deflection axis being asymmetric relative to the conductor distribution of the corresponding at least one of the vertical and horizontal coil winding portions in the other of said two adjacent quadrants for producing a deflection field such as to correct said top to bottom unsymmetrical misconvergence; and the distribution of conductors of at least one of the vertical and horizontal coil winding portions in one of two adjacent quadrants on one side of and bounded by the horizontal deflection axis being asymmetric relative to the conductor distribution of the corresponding at least one of the vertical and horizontal coil winding portions in the other of said two adjacent quadrants for producing a deflection field such as to correct said left to right unsymmetrical misconvergence.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |