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公开(公告)号：FI58232C
公开(公告)日：1980-12-10
申请号：FI1673
申请日：1973-01-04
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL , BARKOW WILLIAM HENRY , GROSS JOSEF
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.
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公开(公告)号：DE2922962A1
公开(公告)日：1979-12-13
申请号：DE2922962
申请日：1979-06-06
Applicant: RCA CORP
Inventor： BARKOW WILLIAM HENRY
Abstract: RCA 73,015 DEFLECTION YOKE WITH PERMANENT MAGNET RASTER CORRECTION A deflection yoke of the self-converging type utilizing pincushion-shaped horizontal and barrel-shaped vertical deflection fields for converging three in-line electron beams includes magnets disposed near the top and bottom beam exit end of the yoke and respectively poled to produce flux of the same polarity as the vertical deflection field at the top and bottom portions of the raster. A second pair of magnets disposed inside the flared inner surface of the yoke at the top and bottom approximately at the center of the yoke length are respectively poled for producing flux which is of the opposite polarity of the vertical deflection field at the top and bottom portions of the raster, the two pairs of magnets cooperating with the deflection field for correcting North-South pincushion distortion with substantially no effect on the beam convergence.
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公开(公告)号：FR2509527B1
公开(公告)日：1986-03-28
申请号：FR8212131
申请日：1982-07-09
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL , HUGHES RICHARD HENRY , BARKOW WILLIAM HENRY
Abstract: The assembly (Fig. 3) has a trio of inline cathodes (21), a first grid (G1, 23) positioned adjacent the cathodes and a second grid (G2, 25) positioned between the first grid and a first focussing electrode (G3, 27). Each grid and electrode has a trio of inline apertures aligned with the cathodes. A common, assymmetric focussing lens is, in use, established between the first focussing electrode (G3) and a second focussing electrode (G4, 29). The lens has a maximum transverse dimension in a first direction parallel to the plane of the inline apertures greater than its maximum transverse dimension in a second orthogonal direction. In order that the cross-section of each electron beam has a greater dimension in the first direction than in the second direction at the beam- entrance of the lens, there is a slotted structure (Fig. 7, 68) associated with said first (23) grid interposing a rectangular slot (68) between each aperture (64) of the first grid and the aligned aperture of the second grid. The long dimension of the rectangle is in the second direction in the first grid (23).
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公开(公告)号：HK16786A
公开(公告)日：1986-03-14
申请号：HK16786
申请日：1986-03-06
Applicant: RCA CORP
Inventor： BARKOW WILLIAM HENRY
Abstract: A deflection yoke of the self-converging type uses pincushion-shaped horizontal deflection fields and barrel-shaped vertical deflection fields for converging three in-line electron beams and includes a first pair of magnets disposed near the top and bottom of the beam exit end of the yoke. Each magnet is poled to produce a field having the same polarity as the vertical deflection field during the interval in which the electron beam is deflected towards the magnet. A second pair of magnets is disposed at the top and bottom of the inside of the flared inner surface of the yoke at a generally central position between the beam entrance and beam exit ends of the yoke, each of which is poled for producing a field of a polarity opposite to that of the vertical deflection field when deflecting the beam towards the respective magnet. The first and second magnet pairs coact to correct North-South pincushion distortion without substantial effect on the convergence. A third pair of magnets is disposed at the top and bottom of the inside flare of the yoke between the beam entrance end of the yoke and the second pair of magnets and is poled in the same direction as the first magnet pair. The third magnet pair reduces the sensitivity of the convergence to the position of the deflection yoke relative to the electron beams.
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公开(公告)号：MY8500719A
公开(公告)日：1985-12-31
申请号：MY8500719
申请日：1985-12-30
Applicant: RCA CORP
Inventor： BARKOW WILLIAM HENRY
Abstract: A deflection yoke of the self-converging type uses pincushion-shaped horizontal deflection fields and barrel-shaped vertical deflection fields for converging three in-line electron beams and includes a first pair of magnets disposed near the top and bottom of the beam exit end of the yoke. Each magnet is poled to produce a field having the same polarity as the vertical deflection field during the interval in which the electron beam is deflected towards the magnet. A second pair of magnets is disposed at the top and bottom of the inside of the flared inner surface of the yoke at a generally central position between the beam entrance and beam exit ends of the yoke, each of which is poled for producing a field of a polarity opposite to that of the vertical deflection field when deflecting the beam towards the respective magnet. The first and second magnet pairs coact to correct North-South pincushion distortion without substantial effect on the convergence. A third pair of magnets is disposed at the top and bottom of the inside flare of the yoke between the beam entrance end of the yoke and the second pair of magnets and is poled in the same direction as the first magnet pair. The third magnet pair reduces the sensitivity of the convergence to the position of the deflection yoke relative to the electron beams.
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Patent Agency Ranking
公开(公告)号：ZA8303804B
公开(公告)日：1984-02-29
申请号：ZA8303804
申请日：1983-05-25
Applicant: RCA CORP
Inventor： GROSS JOSEF , BARKOW WILLIAM HENRY , MIRSCH JOHN WALTER
CPC classification number: H01J29/766
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公开(公告)号：GB2122025A
公开(公告)日：1984-01-04
申请号：GB8314758
申请日：1983-05-27
Applicant: RCA CORP
Inventor： GROSS JOSEF , BARKOW WILLIAM HENRY , MIRSCH JOHN WALTER
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.
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公开(公告)号：DE3320021A1
公开(公告)日：1983-12-08
申请号：DE3320021
申请日：1983-06-03
Applicant: RCA CORP
Inventor： GROSS JOSEF , BARKOW WILLIAM HENRY , MIRSCH JOHN WALTER
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.
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公开(公告)号：ZA8204780B
公开(公告)日：1983-05-25
申请号：ZA8204780
申请日：1982-07-05
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL , HUGHES RICHARD HENRY , BARKOW WILLIAM HENRY
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公开(公告)号：MX146727A
公开(公告)日：1982-08-03
申请号：MX17863279
申请日：1979-07-25
Applicant: RCA CORP
Inventor： BARKOW WILLIAM HENRY
Abstract: A deflection yoke of the self-converging type uses pincushion-shaped horizontal deflection fields and barrel-shaped vertical deflection fields for converging three in-line electron beams and includes a first pair of magnets disposed near the top and bottom of the beam exit end of the yoke. Each magnet is poled to produce a field having the same polarity as the vertical deflection field during the interval in which the electron beam is deflected towards the magnet. A second pair of magnets is disposed at the top and bottom of the inside of the flared inner surface of the yoke at a generally central position between the beam entrance and beam exit ends of the yoke, each of which is poled for producing a field of a polarity opposite to that of the vertical deflection field when deflecting the beam towards the respective magnet. The first and second magnet pairs coact to correct North-South pincushion distortion without substantial effect on the convergence. A third pair of magnets is disposed at the top and bottom of the inside flare of the yoke between the beam entrance end of the yoke and the second pair of magnets and is poled in the same direction as the first magnet pair. The third magnet pair reduces the sensitivity of the convergence to the position of the deflection yoke relative to the electron beams.
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