GB464049A - Television transmitter - Google Patents
Television transmitterInfo
- Publication number
- GB464049A GB464049A GB27666/35A GB2766635A GB464049A GB 464049 A GB464049 A GB 464049A GB 27666/35 A GB27666/35 A GB 27666/35A GB 2766635 A GB2766635 A GB 2766635A GB 464049 A GB464049 A GB 464049A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- film
- intensity
- image
- produce
- 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
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/06—Generation of synchronising signals
- H04N5/067—Arrangements or circuits at the transmitter end
- H04N5/073—Arrangements or circuits at the transmitter end for mutually locking plural sources of synchronising signals, e.g. studios or relay stations
-
- 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
- H04N3/36—Scanning of motion picture films, e.g. for telecine
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/06—Generation of synchronising signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Scanning Arrangements (AREA)
- Projection Apparatus (AREA)
- Details Of Television Scanning (AREA)
- Facsimiles In General (AREA)
Abstract
464,049. Television. RADIOAKT.- GES. D. S. LOEWE. Oct. 7, 1935, No. 27666. Convention date, Oct. 11, 1934. [Class 40 (iii)] A marginal strip is shaded in the projection of a film picture 6 on an area less than the area scanned by an apertured disc 12 and is illuminated by an auxiliary source of light 14 to an intensity greater than the maximum intensity of light in the image. A negative film is used and positive transmission obtained by phase reversal in the photo-electric amplifier. Alternatively, light from the arc 5, which illuminates the film, is projected round the transparent film to produce sharp edges on the scanning disc, which have a greater light intensity than occurs in the reproduction of the film. To produce image-change signals, the illumination of the film is screened by a diaphragm 13<1> from horizontal strips on which light of greater intensity is projected from the source 14. To produce interlaced scanning, as described in Specification 465,184, the spacings between the horizontal strips differ by the width of one scanning line. The auxiliary light is mixed with the primary light by a prism 9, with a lens surface 16, at the point where the shadow of the carbon of the arc lamp 5 is reproduced. A reversal of phase in the photo-electric amplifier produces positive transmission i.e. the aerial current increases for more brilliantly illuminated points in the image.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE460709X | 1934-08-04 | ||
| DE2226997X | 1934-10-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB464049A true GB464049A (en) | 1937-04-07 |
Family
ID=32070593
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21691/35A Expired GB460709A (en) | 1934-08-04 | 1935-07-31 | Television transmitter |
| GB27666/35A Expired GB464049A (en) | 1934-08-04 | 1935-10-07 | Television transmitter |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21691/35A Expired GB460709A (en) | 1934-08-04 | 1935-07-31 | Television transmitter |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US2248548A (en) |
| BE (2) | BE410499A (en) |
| FR (2) | FR793449A (en) |
| GB (2) | GB460709A (en) |
| NL (1) | NL51102C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2429331A (en) * | 1943-12-08 | 1947-10-21 | Rca Corp | Photoelectric apparatus for inspection of paper strips |
| US3049590A (en) * | 1959-07-17 | 1962-08-14 | Brian E Hooper | Negative enlarger using closed loop television |
-
0
- BE BE411671D patent/BE411671A/xx unknown
-
1935
- 1935-07-20 BE BE410499D patent/BE410499A/xx unknown
- 1935-07-22 FR FR793449D patent/FR793449A/en not_active Expired
- 1935-07-31 GB GB21691/35A patent/GB460709A/en not_active Expired
- 1935-08-01 NL NL74410A patent/NL51102C/xx active
- 1935-08-02 US US34390A patent/US2248548A/en not_active Expired - Lifetime
- 1935-10-07 GB GB27666/35A patent/GB464049A/en not_active Expired
- 1935-10-08 US US44063A patent/US2226997A/en not_active Expired - Lifetime
- 1935-10-10 FR FR46642D patent/FR46642E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2226997A (en) | 1940-12-31 |
| GB460709A (en) | 1937-02-01 |
| BE410499A (en) | 1935-08-31 |
| US2248548A (en) | 1941-07-08 |
| FR46642E (en) | 1936-07-11 |
| FR793449A (en) | 1936-01-24 |
| BE411671A (en) | |
| NL51102C (en) | 1941-10-15 |
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