GB466756A - Improvements in or relating to television receivers - Google Patents
Improvements in or relating to television receiversInfo
- Publication number
- GB466756A GB466756A GB33484/35A GB3348435A GB466756A GB 466756 A GB466756 A GB 466756A GB 33484/35 A GB33484/35 A GB 33484/35A GB 3348435 A GB3348435 A GB 3348435A GB 466756 A GB466756 A GB 466756A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scanning
- frequency
- adjustments
- spot
- television receivers
- 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
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
- Radio Relay Systems (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
466,756. Television receivers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and LINSELL, A. A. Dec. 3, 1935, No. 33484. [Class 40 (iii)] The frequency of the scanning-lines in the received signal automatically selects the appropriate set of predetermined adjustments which include adjustments of the scanning-line frequency and of the size of the scanning-spot in the receiver. Resonant circuits 16, 17, each of which responds to a different scanning-line frequency, feed rectifiers 20, 21, the outputs of which energize a differential relay R to select the appropriate set of adjustments. Alternatively, the selection is effected by a thermionic valve with its grid differentially biassed by the output circuits, Figs. 3 and 4 (not shown). The proper size of the scanning-spot is selected by giving the correct potentials to two auxiliary anodes in the cathode-ray tube, Fig. 1 (not shown). The deflecting-frequency is selected by an adjustment of a resistance associated with a condenser in an oscillator.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB33484/35A GB466756A (en) | 1935-12-03 | 1935-12-03 | Improvements in or relating to television receivers |
GB25355/36A GB466866A (en) | 1935-12-03 | 1935-12-03 | Improvements in or relating to television receivers |
US113025A US2226229A (en) | 1935-12-03 | 1936-11-27 | Television receiver |
US113026A US2226230A (en) | 1935-12-03 | 1936-11-27 | Signaling circuit |
FR814378D FR814378A (en) | 1935-12-03 | 1936-12-02 | Improvements to television receivers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB33484/35A GB466756A (en) | 1935-12-03 | 1935-12-03 | Improvements in or relating to television receivers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB466756A true GB466756A (en) | 1937-06-03 |
Family
ID=10353560
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33484/35A Expired GB466756A (en) | 1935-12-03 | 1935-12-03 | Improvements in or relating to television receivers |
GB25355/36A Expired GB466866A (en) | 1935-12-03 | 1935-12-03 | Improvements in or relating to television receivers |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25355/36A Expired GB466866A (en) | 1935-12-03 | 1935-12-03 | Improvements in or relating to television receivers |
Country Status (3)
Country | Link |
---|---|
US (2) | US2226229A (en) |
FR (1) | FR814378A (en) |
GB (2) | GB466756A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2468256A (en) * | 1943-10-06 | 1949-04-26 | Hazeltine Research Inc | Television receiver including a horizontal oscillator responsive to a predetermined fraction of transmitted synchronizing pulses |
US3040206A (en) * | 1959-11-04 | 1962-06-19 | Hewlett Packard Co | Cathode ray tube beam finder circuit |
US5425707A (en) * | 1993-06-28 | 1995-06-20 | Goldberg; Larry | Method for non-surgical treatment of carpal tunnel syndrome |
-
1935
- 1935-12-03 GB GB33484/35A patent/GB466756A/en not_active Expired
- 1935-12-03 GB GB25355/36A patent/GB466866A/en not_active Expired
-
1936
- 1936-11-27 US US113025A patent/US2226229A/en not_active Expired - Lifetime
- 1936-11-27 US US113026A patent/US2226230A/en not_active Expired - Lifetime
- 1936-12-02 FR FR814378D patent/FR814378A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB466866A (en) | 1937-06-03 |
US2226230A (en) | 1940-12-24 |
FR814378A (en) | 1937-06-21 |
US2226229A (en) | 1940-12-24 |
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