GB656516A - Improvements in and relating to colour television systems and apparatus therefor - Google Patents
Improvements in and relating to colour television systems and apparatus thereforInfo
- Publication number
- GB656516A GB656516A GB1109247A GB1109247A GB656516A GB 656516 A GB656516 A GB 656516A GB 1109247 A GB1109247 A GB 1109247A GB 1109247 A GB1109247 A GB 1109247A GB 656516 A GB656516 A GB 656516A
- Authority
- GB
- United Kingdom
- Prior art keywords
- colour
- filter
- particles
- varied
- suspended
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N11/00—Colour television systems
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Electron Tubes For Measurement (AREA)
Abstract
656,516. Colour filters. EDWARDS, B. J., JOHNSTONE, D. M., and PYE, Ltd. April 25, 1947, No. 11092. [Class 97 (i)] [Also in Groups XL (a) and XL (b)] A colour interference filter comprises an array of iridescent particles suspended in a suitable medium and is controlled electrically to vary the orientation of the particles relative to the incident light so that the colour of the emergent beam is varied. As shown in Fig. 3 the filter 16 is mounted on the end wall of a cathode-ray tube 10 used in a colour television transmitting apparatus (see Group XL (b)), and the particles 31 are suspended in a film 32 of elastic material enclosed within transparent electrodes 18, 19. A glass plate 33 separates the electrode 19 from a photocathode 11 and a collimating screen 34 is interposed between the filter 16 and the wall of the tube. The filter of the television receiving apparatus is generally similar and is described in connection with Fig. 4 (not shown). The Specification refers to a colour interference filter formed by a quartz plate whose thickness is varied electrically by electrostriction or magnetstriction to effect desired colour selection.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1109247A GB656516A (en) | 1947-04-25 | 1947-04-25 | Improvements in and relating to colour television systems and apparatus therefor |
| US421232A US2804803A (en) | 1947-04-25 | 1954-04-06 | Variable color filter for color television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1109247A GB656516A (en) | 1947-04-25 | 1947-04-25 | Improvements in and relating to colour television systems and apparatus therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB656516A true GB656516A (en) | 1951-08-22 |
Family
ID=9979889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1109247A Expired GB656516A (en) | 1947-04-25 | 1947-04-25 | Improvements in and relating to colour television systems and apparatus therefor |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB656516A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0676904A1 (en) * | 1993-04-27 | 1995-10-11 | Tai-Her Yang | Video synthetic color system on periodic color-filter for three primary colors |
-
1947
- 1947-04-25 GB GB1109247A patent/GB656516A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0676904A1 (en) * | 1993-04-27 | 1995-10-11 | Tai-Her Yang | Video synthetic color system on periodic color-filter for three primary colors |
| GB2277654B (en) * | 1993-04-27 | 1997-12-03 | Yang Tai Her | Colour television system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2159937A (en) | Electrical device | |
| GB411851A (en) | Improvements in and relating to sound or like air wave echo apparatus | |
| GB562168A (en) | Improvements in colour television | |
| GB697851A (en) | Improvements relating to the utilisation of the photo-electric effect in semi-conductors | |
| GB820053A (en) | Improvements in or relating to colour television transmitters | |
| CA961908A (en) | Cathode-ray tube having prism-shaped fibre optics faceplate | |
| GB743796A (en) | Improvements in and relating to colour television tubes having apertured screen members | |
| GB635779A (en) | Improvements in or relating to colour television systems | |
| GB656516A (en) | Improvements in and relating to colour television systems and apparatus therefor | |
| CA1016377A (en) | Refracting device of the cathode-ray tube correcting lens type | |
| GB620054A (en) | Improvements in or relating to colour filters | |
| GB722501A (en) | Improvements in and relating to television receivers | |
| GB835153A (en) | Improvements in and relating to optical systems for use in television, radar and thelike | |
| GB708365A (en) | Improvements in or relating to viewing windows for cathode ray tube apparatus | |
| GB1223979A (en) | A tube for recording rapid light variations | |
| GB710786A (en) | Arrangement for improving the contrast of luminous screen images | |
| GB807871A (en) | Improvements in or relating to colour television receiving apparatus | |
| GB706530A (en) | Indicating device | |
| GB560153A (en) | Improvements in or relating to radio and television receivers | |
| CA482684A (en) | Velocity modulated beam tubes with reflector electrodes | |
| Wittman | Conference on Transparent Aircraft Enclosures | |
| CA472291A (en) | Tube mountings | |
| CA471000A (en) | Glass fiber sheet material | |
| GB499785A (en) | Improvements in or relating to electron discharge devices | |
| GB470347A (en) | Improvements in or relating to television and like apparatus |