GB1415596A - Colour cathode ray tube arrangements - Google Patents
Colour cathode ray tube arrangementsInfo
- Publication number
- GB1415596A GB1415596A GB479373A GB479373A GB1415596A GB 1415596 A GB1415596 A GB 1415596A GB 479373 A GB479373 A GB 479373A GB 479373 A GB479373 A GB 479373A GB 1415596 A GB1415596 A GB 1415596A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnet
- colour
- devices
- magnetic
- magnets
- 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
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
-
- 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
- H01J29/006—Arrangements for eliminating unwanted temperature effects
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/56—Correction of beam optics
- H01J2229/563—Aberrations by type
- H01J2229/5637—Colour purity
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
1415596 Colour cathode-ray display tubes SONY CORP 31 Jan 1973 [3 Feb 1972] 4793/73 Heading H1D A colour c.r.t. includes temperature responsive magnetic means 1 for compensating for misregistration of electron beams on the phosphor screen due to thermally induced dimensional changes of a beam selecting element and to maintain colour purity, the magnetic means comprising a permanent magnet (2) (Figs. 1, 2 (not shown)) and a magnetic shunt element (3) having temperature responsive permeability, the shunt element engaging with the magnet to form a path for at least part of the flux originating in the magnet. Magnet (2) may be Ba-ferrite containing BaCo 3 and Fe 2 O 3 in the ratio 15 : 85 mol. per cent, and material (3) of Mn.Zn ferrite, e.g. Fe 2 O 3 , MnCo 3 and ZnO in the ratio 50 : 27: 23 mol. per cent. Components (2), (3) may alternatively be rectangular for example. Horizontal landing correction in a tube with vertical phosphor stripes and a slitted selecting electrode, six devices may be provided by six devices (Fig. 5, not shown), and in a shadow mask c.r.t. further devices as dotted may be provided. The magnets (2) preferably face outwards (Fig. 6, not shown). The magnetic permeability may decrease or increase with temperature, magnet mounting and deflection variations being discussed with reference to Figs. 7 to 10 (not shown). The magnets may also be mounted on the deflection coil holder or frame (10) of the mask (6) (Fig. 11 (not shown)).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1972014377U JPS5150426Y2 (en) | 1972-02-03 | 1972-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1415596A true GB1415596A (en) | 1975-11-26 |
Family
ID=11859346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB479373A Expired GB1415596A (en) | 1972-02-03 | 1973-01-31 | Colour cathode ray tube arrangements |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3899710A (en) |
| JP (1) | JPS5150426Y2 (en) |
| CA (1) | CA960742A (en) |
| FR (1) | FR2170277B1 (en) |
| GB (1) | GB1415596A (en) |
| IT (1) | IT978773B (en) |
| NL (1) | NL175769C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5136015A (en) * | 1974-09-20 | 1976-03-26 | Tokyo Shibaura Electric Co | |
| JPS5324726A (en) * | 1976-08-20 | 1978-03-07 | Hitachi Ltd | Color receiving tube |
| US4143345A (en) * | 1978-06-06 | 1979-03-06 | Rca Corporation | Deflection yoke with permanent magnet raster correction |
| US4198614A (en) * | 1978-11-06 | 1980-04-15 | Rca Corporation | Deflection yoke assembly including a beam positioning magnet arrangement |
| US5023509A (en) * | 1989-10-27 | 1991-06-11 | Rca Licensing Corp. | Color CRT-yoke combination having conforming corrective magnetic field means attached to the CRT |
| US6586870B1 (en) * | 1999-04-30 | 2003-07-01 | Sarnoff Corporation | Space-saving cathode ray tube employing magnetically amplified deflection |
| US6476545B1 (en) * | 1999-04-30 | 2002-11-05 | Sarnoff Corporation | Asymmetric, gradient-potential, space-savings cathode ray tube |
| EP1204132A1 (en) * | 2000-11-02 | 2002-05-08 | Matsushita Display Devices (Germany) GmbH | Color display tube |
| KR100413446B1 (en) * | 2001-03-16 | 2003-12-31 | 엘지전자 주식회사 | Color cathode ray-tube |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2972073A (en) * | 1955-08-31 | 1961-02-14 | Rca Corp | Electron beam controlling apparatus |
| US3296570A (en) * | 1963-09-23 | 1967-01-03 | Mitsubishi Electric Corp | Device for correcting distortion of deflection in television receiver |
| FR1598193A (en) * | 1967-11-21 | 1970-07-06 | ||
| US3512035A (en) * | 1968-02-27 | 1970-05-12 | Matsushita Electric Ind Co Ltd | Convergence device for color television receiver |
| US3623151A (en) * | 1970-07-13 | 1971-11-23 | Denki Onkyo Co Ltd | Convergence yoke cores for cathode-ray tubes |
-
1972
- 1972-02-03 JP JP1972014377U patent/JPS5150426Y2/ja not_active Expired
-
1973
- 1973-01-31 GB GB479373A patent/GB1415596A/en not_active Expired
- 1973-02-02 CA CA162,807A patent/CA960742A/en not_active Expired
- 1973-02-02 IT IT7319988A patent/IT978773B/en active
- 1973-02-02 US US329049A patent/US3899710A/en not_active Expired - Lifetime
- 1973-02-05 NL NLAANVRAGE7301612,A patent/NL175769C/en not_active IP Right Cessation
- 1973-02-05 FR FR7304008A patent/FR2170277B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IT978773B (en) | 1974-09-20 |
| NL7301612A (en) | 1973-08-07 |
| NL175769C (en) | 1984-12-17 |
| DE2305162B2 (en) | 1976-09-16 |
| FR2170277A1 (en) | 1973-09-14 |
| JPS4890525U (en) | 1973-10-31 |
| JPS5150426Y2 (en) | 1976-12-04 |
| CA960742A (en) | 1975-01-07 |
| FR2170277B1 (en) | 1977-08-19 |
| US3899710A (en) | 1975-08-12 |
| DE2305162A1 (en) | 1973-08-16 |
| NL175769B (en) | 1984-07-16 |
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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 |