IE37202B1 - Self converging color television display system - Google Patents
Self converging color television display systemInfo
- Publication number
- IE37202B1 IE37202B1 IE1694/72A IE169472A IE37202B1 IE 37202 B1 IE37202 B1 IE 37202B1 IE 1694/72 A IE1694/72 A IE 1694/72A IE 169472 A IE169472 A IE 169472A IE 37202 B1 IE37202 B1 IE 37202B1
- Authority
- IE
- Ireland
- Prior art keywords
- beams
- deflection
- apertures
- convergence
- deflection yoke
- Prior art date
Links
Classifications
-
- 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
-
- 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
- H01J29/48—Electron guns
- H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
- H01J29/503—Three or more guns, the axes of which lay in a common plane
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
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.
[GB1385745A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21778072A | 1972-01-14 | 1972-01-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE37202L IE37202L (en) | 1973-07-14 |
| IE37202B1 true IE37202B1 (en) | 1977-05-25 |
Family
ID=22812478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE1694/72A IE37202B1 (en) | 1972-01-14 | 1972-12-05 | Self converging color television display system |
Country Status (32)
| Country | Link |
|---|---|
| JP (1) | JPS5330288B2 (en) |
| KR (1) | KR810000017B1 (en) |
| AR (1) | AR197971A1 (en) |
| AT (1) | AT335526B (en) |
| BE (1) | BE793995A (en) |
| BR (1) | BR7300276D0 (en) |
| CA (1) | CA967222A (en) |
| CH (1) | CH558621A (en) |
| CS (1) | CS194669B2 (en) |
| DD (1) | DD103524A5 (en) |
| DK (1) | DK144810C (en) |
| EG (1) | EG10967A (en) |
| ES (1) | ES410384A1 (en) |
| FI (1) | FI58232C (en) |
| FR (1) | FR2167971B1 (en) |
| GB (1) | GB1385745A (en) |
| HK (1) | HK10877A (en) |
| HU (1) | HU179053B (en) |
| IE (1) | IE37202B1 (en) |
| IL (1) | IL40892A (en) |
| IT (1) | IT973260B (en) |
| MY (1) | MY7600061A (en) |
| NL (1) | NL7208835A (en) |
| NO (1) | NO135808C (en) |
| PH (1) | PH10037A (en) |
| PL (1) | PL79161B1 (en) |
| RO (1) | RO74859A (en) |
| SE (1) | SE382888B (en) |
| SU (1) | SU1281184A3 (en) |
| TR (1) | TR17025A (en) |
| YU (1) | YU36833B (en) |
| ZA (1) | ZA73271B (en) |
-
1972
- 1972-05-01 GB GB2004772A patent/GB1385745A/en not_active Expired
- 1972-05-29 JP JP5328172A patent/JPS5330288B2/ja not_active Expired
- 1972-06-27 NL NL7208835A patent/NL7208835A/xx active Search and Examination
- 1972-10-30 EG EG447/72A patent/EG10967A/en active
- 1972-11-16 PH PH14091A patent/PH10037A/en unknown
- 1972-11-17 CH CH1682472A patent/CH558621A/en not_active IP Right Cessation
- 1972-11-21 IL IL40892A patent/IL40892A/en unknown
- 1972-12-04 PL PL1972159274A patent/PL79161B1/pl unknown
- 1972-12-05 IE IE1694/72A patent/IE37202B1/en unknown
- 1972-12-06 HU HU72RA581A patent/HU179053B/en unknown
- 1972-12-13 CA CA158,772A patent/CA967222A/en not_active Expired
- 1972-12-22 DD DD167851A patent/DD103524A5/xx unknown
- 1972-12-29 AR AR245955A patent/AR197971A1/en active
- 1972-12-29 IT IT33994/72A patent/IT973260B/en active
-
1973
- 1973-01-04 TR TR17025A patent/TR17025A/en unknown
- 1973-01-04 FI FI16/73A patent/FI58232C/en active
- 1973-01-05 KR KR7300008A patent/KR810000017B1/en active
- 1973-01-05 ES ES410384A patent/ES410384A1/en not_active Expired
- 1973-01-05 SU SU731867615A patent/SU1281184A3/en active
- 1973-01-08 AT AT12973*#A patent/AT335526B/en not_active IP Right Cessation
- 1973-01-11 FR FR7300924A patent/FR2167971B1/fr not_active Expired
- 1973-01-12 SE SE7300415A patent/SE382888B/en unknown
- 1973-01-12 YU YU0090/73A patent/YU36833B/en unknown
- 1973-01-12 ZA ZA730271A patent/ZA73271B/en unknown
- 1973-01-12 BE BE793995D patent/BE793995A/en not_active IP Right Cessation
- 1973-01-12 NO NO161/73A patent/NO135808C/no unknown
- 1973-01-12 CS CS73296A patent/CS194669B2/en unknown
- 1973-01-12 BR BR73276A patent/BR7300276D0/en unknown
- 1973-01-12 DK DK21373A patent/DK144810C/en not_active IP Right Cessation
- 1973-01-15 RO RO7373499A patent/RO74859A/en unknown
-
1976
- 1976-12-30 MY MY61/76A patent/MY7600061A/en unknown
-
1977
- 1977-03-03 HK HK108/77A patent/HK10877A/en unknown
Also Published As
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