GB528355A - Improvements in television transmitters - Google Patents
Improvements in television transmittersInfo
- Publication number
- GB528355A GB528355A GB13402/39A GB1340239A GB528355A GB 528355 A GB528355 A GB 528355A GB 13402/39 A GB13402/39 A GB 13402/39A GB 1340239 A GB1340239 A GB 1340239A GB 528355 A GB528355 A GB 528355A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- picture
- photo
- cathode
- currents
- 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
- 230000007704 transition Effects 0.000 abstract 1
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
- H04N3/36—Scanning of motion picture films, e.g. for telecine
- H04N3/40—Scanning of motion picture films, e.g. for telecine with intermittently moving film
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/40—Circuit details for pick-up tubes
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
528,355. Television. PHILIPS LAMPS, Ltd. May 4, 1939, No. 13402. Convention date, May 7, 1938. [Class 40 (iii)] Relates to television transmitters in which the photo-electric screen of a cathode-ray tube is alternately exposed to a picture film and scanned by the cathode ray as described in Specification 431,207. According to the invention the period of time during which the screen is exposed to the picture is made longer than the time interval between two successive scannings, this increased time of exposure giving a higher charge to the screen and therefore a larger amplitude to the picture currents. The transition impulses are compensated in known manner by a photo-electric cell illuminated directly or indirectly by the light which strikes the screen of the cathode-ray tube. If an increase in the picture currents tends to occur during the times when scanning and exposure coincide, compensation may be made by modulating the picture currents by the compensating impulse of the aforesaid photo-electric cell.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL528355X | 1938-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB528355A true GB528355A (en) | 1940-10-28 |
Family
ID=19787100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13402/39A Expired GB528355A (en) | 1938-05-07 | 1939-05-04 | Improvements in television transmitters |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE434206A (en) |
| DE (1) | DE1075146B (en) |
| FR (1) | FR854327A (en) |
| GB (1) | GB528355A (en) |
-
0
- DE DENDAT1075146D patent/DE1075146B/en active Pending
- BE BE434206D patent/BE434206A/xx unknown
-
1939
- 1939-05-04 GB GB13402/39A patent/GB528355A/en not_active Expired
- 1939-05-05 FR FR854327D patent/FR854327A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE434206A (en) | |
| DE1075146B (en) | 1960-02-11 |
| FR854327A (en) | 1940-04-10 |
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