GB417181A - Improvements in or relating to television - Google Patents
Improvements in or relating to televisionInfo
- Publication number
- GB417181A GB417181A GB937033A GB937033A GB417181A GB 417181 A GB417181 A GB 417181A GB 937033 A GB937033 A GB 937033A GB 937033 A GB937033 A GB 937033A GB 417181 A GB417181 A GB 417181A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- illuminating
- item
- switch
- light source
- 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
Abstract
417,181. Television transmitters. ELECTRIC & MUSICAL INDUSTRIES, Ltd., Blyth Road, Hayes, Middlesex, and BROWNE, C. O., 29, Monk's Drive, West Acton, London. March 28, 1933, No. 9370. [Class 40 (iii).] In the transmission of one item 2 followed by a second item 2<a>, a light source 14 for producing line-synchronising signals, and a light source 23 for producing frame-synchronising signals for the first item, and a light source 5 illuminating the first kinema film 2 are made inoperative and the light sources 14<a>, 23<a>, 5<a> for the second film are made operative by a single control member 48. The switch 48 also switches off a lamp 43 illuminating a sound record on the first film and switches on a lamp 43<a> illuminating a sound record on the second film. The switch also controls through electromagnetic relays 46, 46<a> the supply of current to lightsensitive cells 44, 44<a>, so that only the one appropriate to the film being transmitted is effectively in circuit. Safety shutters 41, 40 cover a picture-scanning slit 4 and a slit 13 for generating the frame-synchronising signals, when an electromagnetic relay 39 is switched off by the switch 48.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB937033A GB417181A (en) | 1933-03-28 | 1933-03-28 | Improvements in or relating to television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB937033A GB417181A (en) | 1933-03-28 | 1933-03-28 | Improvements in or relating to television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB417181A true GB417181A (en) | 1934-09-28 |
Family
ID=9870646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB937033A Expired GB417181A (en) | 1933-03-28 | 1933-03-28 | Improvements in or relating to television |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB417181A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2510621A (en) * | 1942-08-12 | 1950-06-06 | France Henri De | Picture and sound transmitter |
| US2582013A (en) * | 1941-10-11 | 1952-01-08 | France Henri De | Moving picture projection device |
-
1933
- 1933-03-28 GB GB937033A patent/GB417181A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2582013A (en) * | 1941-10-11 | 1952-01-08 | France Henri De | Moving picture projection device |
| US2510621A (en) * | 1942-08-12 | 1950-06-06 | France Henri De | Picture and sound transmitter |
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