GB468294A - Improvements in or relating to mechanical scanning devices for television systems - Google Patents
Improvements in or relating to mechanical scanning devices for television systemsInfo
- Publication number
- GB468294A GB468294A GB187536A GB187536A GB468294A GB 468294 A GB468294 A GB 468294A GB 187536 A GB187536 A GB 187536A GB 187536 A GB187536 A GB 187536A GB 468294 A GB468294 A GB 468294A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- television systems
- relating
- scanning devices
- pinions
- 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
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
- H04N3/04—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving aperture also apertures covered by lenses
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Gear Transmission (AREA)
Abstract
468,294. Television. ARATHOON, J. G. S. Jan. 21, 1936, No. 1875. [Class 40 (iii)] A scanning device for television systems comprises a rotatably mounted disc 2 provided with a scanning slot or gate 3 in the form of a curved segment which is disposed in the path of holes in a disc 6 which is rotatably mounted on the disc 2. The disc 2 is carried upon three or more pinions 4, one of which is power driven, e.g. by a shaft 5, the disc being provided with a toothed rim 7 provided with flanges whereby engagement of pinions 4 is ensured. A further toothed rim 8 is provided for driving the disc 6, this rim forming part of or being secured to the back of the casing 10 and being engaged by a pinion 9 secured to the supporting spindle of disc 6. The diameter of disc 6 is of the order of the diameter of the area traversed by slot 3. The arrangement is such that interlaced scanning is obtained, the definition being higher at the centre of the scene or picture than at the outer boundary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB187536A GB468294A (en) | 1936-01-21 | 1936-01-21 | Improvements in or relating to mechanical scanning devices for television systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB187536A GB468294A (en) | 1936-01-21 | 1936-01-21 | Improvements in or relating to mechanical scanning devices for television systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB468294A true GB468294A (en) | 1937-07-02 |
Family
ID=9729561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB187536A Expired GB468294A (en) | 1936-01-21 | 1936-01-21 | Improvements in or relating to mechanical scanning devices for television systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB468294A (en) |
-
1936
- 1936-01-21 GB GB187536A patent/GB468294A/en not_active Expired
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