GB1308118A - Colour display cathode-ray tube - Google Patents
Colour display cathode-ray tubeInfo
- Publication number
- GB1308118A GB1308118A GB4272271A GB4272271A GB1308118A GB 1308118 A GB1308118 A GB 1308118A GB 4272271 A GB4272271 A GB 4272271A GB 4272271 A GB4272271 A GB 4272271A GB 1308118 A GB1308118 A GB 1308118A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylindrical member
- slot
- convergence
- sept
- slots
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005192 partition Methods 0.000 abstract 1
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
- H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
- H01J29/707—Arrangements intimately associated with parts of the gun and co-operating with external magnetic excitation devices
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
1308118 Colour television tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 14 Sept 1971 [17 Sept 1970] 42722/71 Heading H1D In a colour television tube provided with pairs of internal polepieces, such as 11 and 12 in Fig. 2, which extend through slots 17 and 18 in cylindrical member 16 and which are energized by an external convergence device to provide dynamic convergence of the beams, gaps are provided in the cylindrical member so that no closed electric path exists round a single slot. In Fig. 2 a slot 19 is provided to interrupt the electric path round a slot, and this reduces the time lag between the magnetic field at the beam and the field at the external convergence device from 4 to 1.5 microseconds, thereby simplifying the convergence circuits. In another arrangement, Fig. 3 (not shown), the slots 17 and 18 extend to one edge of the cylindrical member. The arrangement shown is for a three-beam shadow mask tube, and radial partitions 20-22 screen the three pairs of polepieces from each other.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7013722.A NL160112C (en) | 1970-09-17 | 1970-09-17 | CATHOD BEAM TUBE. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1308118A true GB1308118A (en) | 1973-02-21 |
Family
ID=19811072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4272271A Expired GB1308118A (en) | 1970-09-17 | 1971-09-14 | Colour display cathode-ray tube |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3728569A (en) |
| JP (1) | JPS518772B1 (en) |
| AU (1) | AU455382B2 (en) |
| BE (1) | BE772641A (en) |
| CA (1) | CA937972A (en) |
| DE (1) | DE2143125C3 (en) |
| FR (1) | FR2107791A5 (en) |
| GB (1) | GB1308118A (en) |
| NL (1) | NL160112C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE767699A (en) * | 1970-05-27 | 1971-10-18 | G I C Ltd | SUCTION TYPE AIR BAG SAFETY SYSTEM |
| NL7307040A (en) * | 1973-05-21 | 1974-11-25 | ||
| US3906282A (en) * | 1974-02-19 | 1975-09-16 | Gen Electric | Precision getter alignment for cathode ray tubes |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3534208A (en) * | 1968-05-24 | 1970-10-13 | Gen Electric | Cathode ray tube having three in-line guns and center beam convergence shield modifying center beam raster size |
| US3482137A (en) * | 1969-01-03 | 1969-12-02 | Kentucky Electronics Inc | Pole piece mounting structure in crt convergence electrode |
-
1970
- 1970-09-17 NL NL7013722.A patent/NL160112C/en active
-
1971
- 1971-08-28 DE DE2143125A patent/DE2143125C3/en not_active Expired
- 1971-09-14 GB GB4272271A patent/GB1308118A/en not_active Expired
- 1971-09-14 JP JP46070974A patent/JPS518772B1/ja active Pending
- 1971-09-15 BE BE772641A patent/BE772641A/en unknown
- 1971-09-15 AU AU33469/71A patent/AU455382B2/en not_active Expired
- 1971-09-16 CA CA122994A patent/CA937972A/en not_active Expired
- 1971-09-17 FR FR7133525A patent/FR2107791A5/fr not_active Expired
- 1971-09-24 US US00183586A patent/US3728569A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS518772B1 (en) | 1976-03-19 |
| AU455382B2 (en) | 1974-11-21 |
| FR2107791A5 (en) | 1972-05-05 |
| CA937972A (en) | 1973-12-04 |
| BE772641A (en) | 1972-03-15 |
| DE2143125B2 (en) | 1979-01-18 |
| US3728569A (en) | 1973-04-17 |
| NL160112C (en) | 1979-09-17 |
| NL7013722A (en) | 1972-03-21 |
| DE2143125A1 (en) | 1972-03-23 |
| NL160112B (en) | 1979-04-17 |
| DE2143125C3 (en) | 1979-09-20 |
| AU3346971A (en) | 1973-03-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |