GB480279A - Television transmission method - Google Patents
Television transmission methodInfo
- Publication number
- GB480279A GB480279A GB23060/36A GB2306036A GB480279A GB 480279 A GB480279 A GB 480279A GB 23060/36 A GB23060/36 A GB 23060/36A GB 2306036 A GB2306036 A GB 2306036A GB 480279 A GB480279 A GB 480279A
- Authority
- GB
- United Kingdom
- Prior art keywords
- image
- scanning
- sound
- film
- transmitters
- 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
- H04N7/00—Television systems
-
- 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
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/30—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines
- H04N3/34—Elemental scanning area oscillated rapidly in direction transverse to main scanning direction
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimiles In General (AREA)
Abstract
480,279. Television. RADIOAKT.- GES. D. S. LOEWE. Aug. 21, 1936, No. 23060. Convention date, Aug. 22, 1935. [Classes 40 (iii) and 40 (v)] Two transmitters 8, 9 transmit the same subject 3 with different characteristics, such as the number of scanning-lines, the frequency of image change, or the number of synchronizing signals. A common sound transmitter 21 transmits on a carrier so situated between those of the image transmitters that the sound and the signals from the transmitter using the less number of scanning lines can be received with a common high-frequency amplifier or local oscillator and intermediate-frequency amplifier. Images a, c which are adjacent on the film 3, or are separated by one image b, are scanned by the scanners 4, 5 of the respective transmitters, and the sound transmitter is modulated by the strip 18 corresponding to the intermediate image b. According to modifications, two films are used, only one of which has a sound strip ; two optical images of the film are formed at different positions by two light sources, Fig. 3 (not shown), or by a single light source, Fig. 4 (not shown), and the rays pass through the film at such an angle as to produce a trapezoidal image which corresponds with the reduction in the scanning path of the disc towards the centre of the disc ; the scanning disc has two or more different spirals or rings of apertures.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE480279X | 1935-08-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB480279A true GB480279A (en) | 1938-02-21 |
Family
ID=6542525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23060/36A Expired GB480279A (en) | 1935-08-22 | 1936-08-21 | Television transmission method |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE417037A (en) |
| FR (1) | FR809691A (en) |
| GB (1) | GB480279A (en) |
| NL (1) | NL45080C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI270545B (en) | 2000-05-24 | 2007-01-11 | Sugen Inc | Mannich base prodrugs of 3-(pyrrol-2-ylmethylidene)-2-indolinone derivatives |
-
0
- NL NL45080D patent/NL45080C/xx active
- BE BE417037D patent/BE417037A/xx unknown
-
1936
- 1936-08-21 GB GB23060/36A patent/GB480279A/en not_active Expired
- 1936-08-21 FR FR809691D patent/FR809691A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL45080C (en) | |
| FR809691A (en) | 1937-03-08 |
| BE417037A (en) |
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