IL40893A - Deflection yoke for use with in-line electron guns - Google Patents
Deflection yoke for use with in-line electron gunsInfo
- Publication number
- IL40893A IL40893A IL40893A IL4089372A IL40893A IL 40893 A IL40893 A IL 40893A IL 40893 A IL40893 A IL 40893A IL 4089372 A IL4089372 A IL 4089372A IL 40893 A IL40893 A IL 40893A
- Authority
- IL
- Israel
- Prior art keywords
- deflection
- beams
- vertical
- horizontal
- coils
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/16—Picture reproducers using cathode ray tubes
- H04N9/28—Arrangements for convergence or focusing
- H04N9/285—Arrangements for convergence or focusing using quadrupole lenses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/76—Deflecting by magnetic fields only
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
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.
[US3721930A]
Claims (5)
1. A deflection yoke adapted for use in a color image display system in which a picture tube includes an electron gun assembly for producing a plurality of coplanar in-line beams which converge at and are scanned over a raster on the viewing screen of said picture tube, said yoke characterized by a pair of vertical deflection coils and a pair of horizontal deflection coils for deflecting said beams vertically and horizontally, the conductor distribution of said coils being selected for producing positive vertical isotropic astigmatism and negative horizontal producing overconvergence of cal deflection axis and a th. of underconvergence of said beams alon-glfthe horizontal deflection axis as observed on the viewing screen of said picture tube as said beams are scanned over said raster.
2. A deflection yoke according to Claim 1, characterized by a ferrite core; a pair of vertical and a pair of horizontal deflection coils toroidally wound around said core for deflecting said beams vertically and horizontally, the conductor distribution of said coils being selected for producing positive vertical isotropic astigmatism and negative horizontal isotropic astigmatism for producing overconvergence of said beams &f e en/s along- the vertical deflection axis and underconvergence of said beams aloftg|/the horizontal deflection axis as observed on the viewing screen of said picture tube as said beams are scanned over said raster. RCA 60,859
3. A deflection yoke according to Claim 1, characterized by a ferrite core; a pair of vertical deflection coils and a pair of horizontal deflection coils toroidally wound around said core for deflecting said beams vertically and horizontally, the conductor density distribution in each quadrant of a transverse cross-section of said yoke bounded by the horizontal and vertical deflection axes being least in an angular portion extending between 25 and 45 degrees measured from said vertical deflection axis for producing positive vertical isotropic astigmatism and negative and underconvergence of said beams aloiigYthe horizontal deflection axis as observed on the viewing screen of said picture tube as said beams are scanned over said raster.
4. A deflection yoke according to Claims 1 or 2 , characterized in that said vertical and horizontal pairs of deflection coils are saddle-type.
5. A deflection coil according to Claims 1, 2, 3, and 4, characterized in that each of said coils includes conductors in said region extending between 25 and 45 degrees which are connected separately from conductors in other than said region so that scanning current is bypassed around said conductors in said region between 25 and 45 degrees for producing said least active field producing conductor distribution density in said region between 25 and 45 degrees .
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21776872A | 1972-01-14 | 1972-01-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL40893A0 IL40893A0 (en) | 1973-01-30 |
| IL40893A true IL40893A (en) | 1976-07-30 |
Family
ID=22812430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL40893A IL40893A (en) | 1972-01-14 | 1972-11-21 | Deflection yoke for use with in-line electron guns |
Country Status (27)
| Country | Link |
|---|---|
| US (1) | US3721930A (en) |
| JP (1) | JPS5737976B2 (en) |
| KR (1) | KR780000543B1 (en) |
| AR (1) | AR197973A1 (en) |
| AT (1) | AT334428B (en) |
| BE (1) | BE793993A (en) |
| BR (1) | BR7300231D0 (en) |
| CA (1) | CA966541A (en) |
| CH (1) | CH558623A (en) |
| DD (1) | DD102541A5 (en) |
| DE (1) | DE2224096C3 (en) |
| EG (1) | EG10816A (en) |
| ES (1) | ES410386A1 (en) |
| FI (1) | FI59182C (en) |
| FR (1) | FR2167969B1 (en) |
| GB (1) | GB1385747A (en) |
| IE (1) | IE36985B1 (en) |
| IL (1) | IL40893A (en) |
| IT (1) | IT973258B (en) |
| NL (1) | NL7208931A (en) |
| NO (1) | NO135653C (en) |
| PL (1) | PL79153B1 (en) |
| RO (1) | RO64020A (en) |
| SE (1) | SE386006B (en) |
| TR (1) | TR17129A (en) |
| YU (1) | YU9173A (en) |
| ZA (1) | ZA73270B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3892996A (en) * | 1972-01-14 | 1975-07-01 | Rca Corp | Self-converging color television display system |
| US3835426A (en) * | 1973-10-24 | 1974-09-10 | Gte Sylvania Inc | Winding crown for inline gun deflection yoke |
| DE2516577C3 (en) * | 1975-04-16 | 1981-08-27 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Deflection unit for a color television receiver with an inline color picture tube |
| JPS51132018A (en) * | 1975-05-12 | 1976-11-16 | Sanyo Electric Co Ltd | Troidal deflection yoke |
| IT1050924B (en) * | 1975-11-21 | 1981-03-20 | Indesit | DEVICE FOR THE ADJUSTMENT OF THE ELECTRONIC BEAMS OF A CINESCOPE |
| JPS5337322A (en) * | 1976-04-09 | 1978-04-06 | Hitachi Ltd | Deflection york |
| FR2411486A1 (en) * | 1977-12-07 | 1979-07-06 | Videon Sa | ADVANCED DEVIATION COIL |
| US4143345A (en) * | 1978-06-06 | 1979-03-06 | Rca Corporation | Deflection yoke with permanent magnet raster correction |
| US4329671A (en) * | 1979-08-27 | 1982-05-11 | Rca Corporation | Alignment-insensitive self-converging in-line color display |
| US6958573B1 (en) * | 1999-12-03 | 2005-10-25 | Thomson Licensing S.A. | Asymmetric shunt for deflection yoke for reducing diagonal symmetric defects |
| US6498443B2 (en) * | 2000-06-15 | 2002-12-24 | Matsushita Electric Industrial Co., Ltd. | Color TV tube apparatus and color display tube apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3430099A (en) * | 1966-08-23 | 1969-02-25 | Gen Electric | Simplified deflection system for plural in-line beam cathode ray tube |
| US3548350A (en) * | 1969-01-15 | 1970-12-15 | Gen Electric | Wide angle deflection yoke for producing optimally non-uniform deflection fields |
-
0
- BE BE793993D patent/BE793993A/en unknown
-
1972
- 1972-01-14 US US00217768A patent/US3721930A/en not_active Expired - Lifetime
- 1972-05-04 GB GB2082772A patent/GB1385747A/en not_active Expired
- 1972-05-17 DE DE2224096A patent/DE2224096C3/en not_active Expired
- 1972-05-30 JP JP5374272A patent/JPS5737976B2/ja not_active Expired
- 1972-06-28 NL NL7208931A patent/NL7208931A/xx not_active Application Discontinuation
- 1972-11-02 EG EG454/72A patent/EG10816A/en active
- 1972-11-21 IL IL40893A patent/IL40893A/en unknown
- 1972-11-29 CH CH1738672A patent/CH558623A/en not_active IP Right Cessation
- 1972-12-05 IE IE1692/72A patent/IE36985B1/en unknown
- 1972-12-07 PL PL1972159369A patent/PL79153B1/pl unknown
- 1972-12-13 CA CA158,762A patent/CA966541A/en not_active Expired
- 1972-12-29 IT IT33992/72A patent/IT973258B/en active
-
1973
- 1973-01-04 FI FI14/73A patent/FI59182C/en active
- 1973-01-05 TR TR17129A patent/TR17129A/en unknown
- 1973-01-05 ES ES410386A patent/ES410386A1/en not_active Expired
- 1973-01-05 DD DD168091*[A patent/DD102541A5/xx unknown
- 1973-01-08 AR AR246026A patent/AR197973A1/en active
- 1973-01-11 BR BR73231A patent/BR7300231D0/en unknown
- 1973-01-11 FR FR7300922A patent/FR2167969B1/fr not_active Expired
- 1973-01-12 ZA ZA730270A patent/ZA73270B/en unknown
- 1973-01-12 SE SE7300413A patent/SE386006B/en unknown
- 1973-01-12 YU YU00091/73A patent/YU9173A/en unknown
- 1973-01-12 NO NO163/73A patent/NO135653C/no unknown
- 1973-01-13 KR KR7300058A patent/KR780000543B1/en active
- 1973-01-15 RO RO7300073497A patent/RO64020A/en unknown
- 1973-01-15 AT AT29173*#A patent/AT334428B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EG10816A (en) | 1976-07-31 |
| KR780000543B1 (en) | 1978-11-02 |
| GB1385747A (en) | 1975-02-26 |
| SE386006B (en) | 1976-07-26 |
| FR2167969B1 (en) | 1976-08-27 |
| IE36985B1 (en) | 1977-04-13 |
| NO135653C (en) | 1977-05-04 |
| BR7300231D0 (en) | 1973-10-09 |
| IE36985L (en) | 1973-07-14 |
| NO135653B (en) | 1977-01-24 |
| ZA73270B (en) | 1973-10-31 |
| CH558623A (en) | 1975-01-31 |
| PL79153B1 (en) | 1975-06-30 |
| DD102541A5 (en) | 1973-12-12 |
| ATA29173A (en) | 1976-05-15 |
| NL7208931A (en) | 1973-07-17 |
| TR17129A (en) | 1974-04-25 |
| YU9173A (en) | 1982-06-18 |
| JPS5737976B2 (en) | 1982-08-12 |
| CA966541A (en) | 1975-04-22 |
| AR197973A1 (en) | 1974-05-24 |
| FI59182C (en) | 1981-06-10 |
| JPS4882721A (en) | 1973-11-05 |
| DE2224096C3 (en) | 1980-04-30 |
| US3721930A (en) | 1973-03-20 |
| DE2224096A1 (en) | 1973-07-19 |
| FR2167969A1 (en) | 1973-08-24 |
| ES410386A1 (en) | 1975-12-16 |
| BE793993A (en) | 1973-05-02 |
| AT334428B (en) | 1976-01-10 |
| FI59182B (en) | 1981-02-27 |
| IL40893A0 (en) | 1973-01-30 |
| DE2224096B2 (en) | 1976-03-25 |
| IT973258B (en) | 1974-06-10 |
| RO64020A (en) | 1978-11-15 |
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