GB485119A - Improvements in television - Google Patents
Improvements in televisionInfo
- Publication number
- GB485119A GB485119A GB31309/36A GB3130936A GB485119A GB 485119 A GB485119 A GB 485119A GB 31309/36 A GB31309/36 A GB 31309/36A GB 3130936 A GB3130936 A GB 3130936A GB 485119 A GB485119 A GB 485119A
- Authority
- GB
- United Kingdom
- Prior art keywords
- deflecting
- electrode
- picture
- synchronizing
- nov
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/26—Image pick-up tubes having an input of visible light and electric output
- H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
485,119. Television transmitters. RADIOAKT.-GES. D. S. LOEWE. Nov. 16, 1936, No. 31309. Convention date, Nov. 18, 1935. [Classes 39 (i) and 40 (iii)] An iconoscope screen 1 has a metal-coated marginal electrode 7a, 7b maintained at a suitable potential from a source 9, so that when the scanning cathode-ray beam 2 impinges on it at the end of each line and each picture, a synchronizing signal is developed. The electrode 7a, 7b is preferably coupled capacitively to the same counter-electrode as the mosaic screen 1, and a single amplifier 6 is used for both the picture and synchronizing signals. According to the Specification as open to inspection under Sect. 91, synchronizing signals are developed by applying the deflecting potential to an amplitude filter 12, Fig. 2 (Cancelled), which is biassed to conduct only at the peaks of the deflecting oscillations. The pulses so obtained are applied over transformer 14, tuned to the synchronizing frequency, and through a rectifier 15 to the grid of the picture signal amplifier 6. When electromagnetic deflection is employed, the amplitude filter is connected in parallel to the deflecting coils, or to a resistance in series with the deflecting coils. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE485119X | 1935-11-18 | ||
| DE2196375X | 1935-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB485119A true GB485119A (en) | 1938-05-16 |
Family
ID=32070601
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18215/37A Expired GB485132A (en) | 1935-11-18 | 1936-11-16 | Improvements in television |
| GB31309/36A Expired GB485119A (en) | 1935-11-18 | 1936-11-16 | Improvements in television |
| GB32278/36A Expired GB485598A (en) | 1935-11-18 | 1936-11-25 | Method of and means for generating synchronisation impulses in television transmission arrangements with braun tubes |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18215/37A Expired GB485132A (en) | 1935-11-18 | 1936-11-16 | Improvements in television |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32278/36A Expired GB485598A (en) | 1935-11-18 | 1936-11-25 | Method of and means for generating synchronisation impulses in television transmission arrangements with braun tubes |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2196375A (en) |
| BE (1) | BE418441A (en) |
| GB (3) | GB485132A (en) |
-
0
- BE BE418441D patent/BE418441A/xx unknown
-
1936
- 1936-11-16 GB GB18215/37A patent/GB485132A/en not_active Expired
- 1936-11-16 GB GB31309/36A patent/GB485119A/en not_active Expired
- 1936-11-24 US US112488A patent/US2196375A/en not_active Expired - Lifetime
- 1936-11-25 GB GB32278/36A patent/GB485598A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE418441A (en) | |
| GB485598A (en) | 1938-05-23 |
| GB485132A (en) | 1938-05-16 |
| US2196375A (en) | 1940-04-09 |
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