GB374400A - Improvements in or relating to television and like systems employing cathode ray tubes - Google Patents
Improvements in or relating to television and like systems employing cathode ray tubesInfo
- Publication number
- GB374400A GB374400A GB6366/32A GB636632A GB374400A GB 374400 A GB374400 A GB 374400A GB 6366/32 A GB6366/32 A GB 6366/32A GB 636632 A GB636632 A GB 636632A GB 374400 A GB374400 A GB 374400A
- Authority
- GB
- United Kingdom
- Prior art keywords
- potential
- zero
- cathode ray
- received signals
- plate
- 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
- H04N5/66—Transforming electric information into light information
- H04N5/68—Circuit details for cathode-ray display tubes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
374,400. Television receivers. TELEFUNKEN GES. FUR DRATHLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. March 2, 1932, No. 6366. Convention date, March 2, 1931. [Class 40 (iii).] Relates to a cathode ray receiver in which the cathode stream from the cathode 1, Fig 1 passes through a tubular anode 2, an aperture 5 and between the scanning plates 6 .. 9 to the screen. In a known arrangement, the received signals are applied to the condenser plate 3 so that the cathode ray only passes through the aperture 5 during the short period when the received signals are passing through zero valve. According to the invention, the pulsating potential applied to the plate 3 is of zero amplitude for periods of time in each cycle, varying in linear relation with the strength of the received signals. The required oscillating potential is obtained as in Fig. 3, where a source of constant frequency alternating potential 10 is in series with a rectifier 11, and the received signal source 12. The potential tapped off from resistance 13 to be applied to the plate 3 is of zero amplitude for half a cycle, when the potential of 12 is zero, and when the potential of 12 is a maximum no period of zero potential occurs. The oscillation generated at 10 may be a straight line wave form oscillation. At high frequencies, the capacity of the rectifier 11, e.g. a valve, is compensated by a condenser 17, Fig. 4, in a bridge having resistances 18, 19.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE374400X | 1931-03-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB374400A true GB374400A (en) | 1932-06-09 |
Family
ID=6343534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6366/32A Expired GB374400A (en) | 1931-03-02 | 1932-03-02 | Improvements in or relating to television and like systems employing cathode ray tubes |
Country Status (2)
Country | Link |
---|---|
US (1) | US2050628A (en) |
GB (1) | GB374400A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2490026A (en) * | 1944-10-30 | 1949-12-06 | Farnsworth Res Corp | Pulse width control |
US2574975A (en) * | 1950-01-17 | 1951-11-13 | Heinz E Kallmann | Electron beam deflecting system |
US3051865A (en) * | 1958-10-06 | 1962-08-28 | Itt | Pulsed beam tube |
NL245866A (en) * | 1958-11-29 | |||
US3096437A (en) * | 1961-03-27 | 1963-07-02 | High Voltage Engineering Corp | Means for pulsing an ion beam |
-
1932
- 1932-02-29 US US595817A patent/US2050628A/en not_active Expired - Lifetime
- 1932-03-02 GB GB6366/32A patent/GB374400A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2050628A (en) | 1936-08-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB504060A (en) | Improvements in or relating to radio direction finding receivers | |
US2269594A (en) | Modulation of wire and radio transmission by frequency variation | |
GB485924A (en) | Improvements in electrical systems | |
GB363605A (en) | Improvements in or relating to sending and receiving synchronised systems for television, telecinematography, telemechanical devices and other applications | |
GB374400A (en) | Improvements in or relating to television and like systems employing cathode ray tubes | |
GB444049A (en) | Amplitude filter particularly for television | |
GB463967A (en) | Improvements in or relating to television transmitters | |
US2595931A (en) | Superheterodyne receiver with automatic frequency control | |
US2211860A (en) | Electrical wave segregation circuit | |
GB459602A (en) | Method of and arrangement for producing synchronising impulses for television transmitters | |
GB402134A (en) | Improvements relating to electrical circuits for producing oscillations of non-sinusoidal wave form for use, for example, with cathode ray devices | |
US2212240A (en) | Carrier wave modulating system and apparatus | |
US2178766A (en) | Television apparatus | |
US1615636A (en) | Signaling system | |
US2203521A (en) | Modulated-carrier wave-signaltranslating system | |
US2231854A (en) | Frequency modulation | |
US2282104A (en) | Reception of angular velocity modulated waves | |
US1502063A (en) | Electric-wave receiver | |
US2112881A (en) | Frequency multiplication phase modulation receiver | |
US2351192A (en) | Frequency modulation receiver | |
US2163217A (en) | Television receiver circuit | |
GB472520A (en) | Improvements in or relating to radio and like receivers | |
US2277841A (en) | Superregenerative magnetron receiver | |
US1828094A (en) | Electrical frequency-changing apparatus of the thermionic type | |
DE804331C (en) | Circuit for limiting and demodulating frequency-modulated oscillations |