GB478151A - Improvements in or relating to cathode ray tubes - Google Patents
Improvements in or relating to cathode ray tubesInfo
- Publication number
- GB478151A GB478151A GB29938/36A GB2993836A GB478151A GB 478151 A GB478151 A GB 478151A GB 29938/36 A GB29938/36 A GB 29938/36A GB 2993836 A GB2993836 A GB 2993836A GB 478151 A GB478151 A GB 478151A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- tube
- conducting
- render
- synchronizing
- 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
- H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
- H04N5/123—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal directly commands a frequency generator
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
478,151. Television receivers. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Nov. 3, 1936, No. 29938. Convention date, Nov. 14, 1935. [Class 40 (iii)] A signal train comprising vision signals and relatively negative synchronizing signals is applied at El, E2, to vary the cathode potential of a gas-filled discharge tube Th1 whose grid is earthed. The synchronizing impulses thus render the tube conducting to discharge a condenser C2 charged over resistance R3 and so provide a line deflecting potential. A condenser C4, charged over resistance R4, is discharged by a gas-filled discharge tube Th2 to provide a frame deflecting potential. The tube Th2 is rendered conducting by an impulse passed over condenser C3. The normal line impulses passing over C3 are insufficient to render tube Th2 conducting, but when a frame synchronizing signal, constituted by a cessation of the line synchronizing signal, occurs, condenser C2 charges to twice its normal value, the impulse passing over condenser C3 is then of sufficient amplitude to render tube Th2 conducting.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR478151X | 1935-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB478151A true GB478151A (en) | 1938-01-13 |
Family
ID=8903233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29938/36A Expired GB478151A (en) | 1935-11-14 | 1936-11-03 | Improvements in or relating to cathode ray tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB478151A (en) |
-
1936
- 1936-11-03 GB GB29938/36A patent/GB478151A/en not_active Expired
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