公开(公告)号：FI59182C

公开(公告)日：1981-06-10

申请号：FI1473

申请日：1973-01-04

Applicant: RCA CORP

Inventor： BARKOW WILLIAM HENRY ,  GROSS JOSEF

IPC: H01J29/70 ,  H01J29/76 ,  H04N9/28 ,  H04N9/285

Abstract: A deflection yoke for a television picture tube utilizing coplanar horizontal in-line electron guns includes vertical and horizontal coil windings selected for producing positive vertical isotropic astigmatism and negative horizontal isotropic astigmatism which underconverges the electron beams along the vertical deflection axis such that the beams are substantially converged at all points on a scanned raster of the picture tube. The desired convergence characteristics are achieved by winding the vertical and horizontal coil conductors such that the conductor distribution in each quadrant of a cross-section of the yoke is least in a region between 25 DEG and 45 DEG measured from the vertical deflection axis of the yoke.

公开(公告)号：FI58232B

公开(公告)日：1980-08-29

申请号：FI1673

申请日：1973-01-04

Applicant: RCA CORP

Inventor： MORRELL ALBERT MAXWELL ,  BARKOW WILLIAM HENRY ,  GROSS JOSEF

IPC: H04N9/16 ,  H01J29/50 ,  H01J29/76

Abstract: 1385745 Colour television tubes RCA CORPORATION 1 May 1972 [14 Jan 1972] 20047/72 Heading H1D A colour television tube of the shadow mask type using three co-planar beams, is provided with a deflection yoke adapted to produce a pin cushion shaped horizontal deflecting field which causes under convergence at extreme horizontal deflection, and a barrel-shaped vertical deflecting field which causes over-convergence at extreme vertical deflection; and the electron gun is adapted to produce a spacing between the beams at the centre of the deflection yoke not greater than 0À2 inch. Dynamic convergence arrangements are then unnecessary but may be provided for larger tubes. The electron gun may comprise three individual cathodes and common G1 to G4 electrodes provided with apertures for the beams; the outer apertures of the final electrode may be surrounded by magnetically permeable material such as nickel iron to partly screen the outer beams from the deflection fields and thereby equalize the raster sizes for the three colours. The deflection yoke is as described in Specification 1385747 and is preferaby toroidal but saddle coils may be used. The shadow mask may be provided with elongate apertures, and the fluorescent screen may comprise stripes of different colours.

公开(公告)号：AU497877B2

公开(公告)日：1979-01-18

申请号：AU8526075

申请日：1975-09-29

Applicant: RCA CORP

Inventor： BARKOW WILLIAM HENRY ,  GROSS JOSEF

IPC: H01J3/02 ,  H01J29/50 ,  H01J29/52 ,  H01J29/76 ,  H01J31/20 ,  H01J29/51 ,  H01J29/56 ,  H01J29/58 ,  H01J29/70

Abstract: A color picture reproducing tube utilizes three coplanar electron beams. Convergence of the three beams along at least one axis is accomplished by a deflection assembly producing a magnetic deflection field with particular astigmatism characteristics which also elliptically distorts each of the three beams in a first direction. The electron gun assembly within the picture tube includes apertured electrodes which predistort the beams elliptically in a second direction orthogonal to the first direction of distortion.

公开(公告)号：NO137167B

公开(公告)日：1977-10-03

申请号：NO16473

申请日：1973-01-12

Applicant: RCA CORP

Inventor： GROSS JOSEF ,  BARKOW WILLIAM HENRY

IPC: H01J3/02 ,  H01J29/50 ,  H01J29/51 ,  H01J29/76 ,  H01J31/20 ,  H01J29/58 ,  H04N9/28

Abstract: A color television display system is described which requires no dynamic convergence apparatus for small and medium size screen color picture tubes and which requires relatively simple dynamic convergence apparatus for large screen color picture tubes. The color picture tube includes an electron gun assembly for producing three adjacent horizontal in-line coplanar beams. The electron gun assembly includes a common three-aperture beam forming electrode for establishing precise alignment of the beams. The beams are substantially converged at all points in the scanned raster as they are deflected by a deflection yoke providing negative horizontal isotropic astigmatism and positive vertical isotropic astigmatism. The gun assembly includes magnetic shield members disposed around the two outside beam paths to shield those beams from a portion of the deflection field so that the rasters scanned by the three beams are of the same size. In addition, the color picture tube includes a faceplate having repeating groups of three different color phosphor strips and an aperture mask including a plurality of elongated slit apertures disposed adjacent the phosphor strips to enhance the light output from the picture tube.

公开(公告)号：CA939722A

公开(公告)日：1974-01-08

申请号：CA129187

申请日：1971-12-02

Applicant: RCA CORP

Inventor： GROSS JOSEF ,  BARKOW WILLIAM H

IPC: H01J29/76

Abstract: A deflection yoke for a color television receiver utilizing a delta gun shadow mask color picture tube has its winding distribution selected for minimizing the variations of the beam trio distortion around the picture tube display face for permitting use of a shadow mask yielding a greater and more uniform brightness over the viewed area of the tube.

公开(公告)号：DE2224096A1

公开(公告)日：1973-07-19

申请号：DE2224096

申请日：1972-05-17

Applicant: RCA CORP

Inventor： BARKOW WILLIAM HENRY ,  GROSS JOSEF

IPC: H01J29/70 ,  H01J29/76 ,  H04N9/28 ,  H04N9/285

Abstract: A deflection yoke for a television picture tube utilizing coplanar horizontal in-line electron guns includes vertical and horizontal coil windings selected for producing positive vertical isotropic astigmatism and negative horizontal isotropic astigmatism which underconverges the electron beams along the vertical deflection axis such that the beams are substantially converged at all points on a scanned raster of the picture tube. The desired convergence characteristics are achieved by winding the vertical and horizontal coil conductors such that the conductor distribution in each quadrant of a cross-section of the yoke is least in a region between 25 DEG and 45 DEG measured from the vertical deflection axis of the yoke.

公开(公告)号：AU3683371A

公开(公告)日：1973-06-21

申请号：AU3683371

申请日：1971-12-14

Applicant: RCA CORP

Inventor： GROSS JOSEF ,  BARKOW WILLIAM HENRY

IPC: H01J29/76 ,  H01J29/56

Abstract: A deflection yoke for a color television receiver utilizing a delta gun shadow mask color picture tube has its winding distribution selected for minimizing the variations of the beam trio distortion around the picture tube display face for permitting use of a shadow mask yielding a greater and more uniform brightness over the viewed area of the tube.

公开(公告)号：IT1170144B

公开(公告)日：1987-06-03

申请号：IT2129383

申请日：1983-05-25

Applicant: RCA CORP

Inventor： GROSS JOSEF ,  BARKOW WILLIAM HENRY ,  MIRSCH JOHN WALTER

IPC: H01J29/76 ,  H04N

Abstract: A self-converging color television display system utilizes a saddle-toroid deflection yoke. The length of the horizontal coil conductors adjacent the flared picture tube portion is limited to reduce stored energy. The length of the core also is limited and disposed longitudinally between the end turns of the horizontal saddle coils at a position to mitigate convergence trilemma as well as North-South pincushion distortion.

公开(公告)号：IT1135504B

公开(公告)日：1986-08-27

申请号：IT1980781

申请日：1981-02-17

Applicant: RCA CORP

Inventor： ALIG ROGER CASANOVA ,  BARKOW WILLIAM HENRY ,  GROSS JOSEF

IPC: H01J29/76 ,  H01J29/56 ,  H01J29/70 ,  H04N9/28 ,  H04N

Abstract: In a television receiver comprising a display system incorporating a kinescope having horizontal in-line electron beams and also incorporating a deflection yoke having toroidally-wound vertical deflection coils, where the kinescope utilizes a magnetically-permeable G3 focussing electrode in the electron guns to reduce deflection defocussing, an arrangement for correcting misconvergence of the electron beams caused by the magnetically-permeable G3 electrode comprises a pair of magnetically-permeable field formers disposed along and extending toward the rear of the yoke. The field formers are configured to collect a portion of the external fields generated by the vertical windings and direct those portions through the kinescope neck substantially at right angles to the electron beams in the vicinity of the exit end of the electron guns with a barrel-shaped transverse pattern.

公开(公告)号：PH19970A

公开(公告)日：1986-08-26

申请号：PH19697

申请日：1977-04-22

Applicant: RCA CORP

Inventor： GROSS JOSEF ,  BARKOW WILLIAM HENRY

IPC: H01J3/02 ,  H01J29/50 ,  H01J29/51 ,  H01J29/76 ,  H01J31/20 ,  H01J29/46

Abstract: A color television display system is described which requires no dynamic convergence apparatus for small and medium size screen color picture tubes and which requires relatively simple dynamic convergence apparatus for large screen color picture tubes. The color picture tube includes an electron gun assembly for producing three adjacent horizontal in-line coplanar beams. The electron gun assembly includes a common three-aperture beam forming electrode for establishing precise alignment of the beams. The beams are substantially converged at all points in the scanned raster as they are deflected by a deflection yoke providing negative horizontal isotropic astigmatism and positive vertical isotropic astigmatism. The gun assembly includes magnetic shield members disposed around the two outside beam paths to shield those beams from a portion of the deflection field so that the rasters scanned by the three beams are of the same size. In addition, the color picture tube includes a faceplate having repeating groups of three different color phosphor strips and an aperture mask including a plurality of elongated slit apertures disposed adjacent the phosphor strips to enhance the light output from the picture tube.