GB505197A - Improvements in or relating to television and like systems - Google Patents
Improvements in or relating to television and like systemsInfo
- Publication number
- GB505197A GB505197A GB30445/37A GB3044537A GB505197A GB 505197 A GB505197 A GB 505197A GB 30445/37 A GB30445/37 A GB 30445/37A GB 3044537 A GB3044537 A GB 3044537A GB 505197 A GB505197 A GB 505197A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- television
- spot
- scanning
- signal
- 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
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/257—Picture signal generators using flying-spot scanners
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
505,197. Television; automatic control systems. BAIRD TELEVISION, Ltd., DOVASTON, G., and GRAHAM, G. E. G. Nov. 5, 1937, No. 30445. [Class 40 (iii)] [Also in Group XXXV] An auxiliary lightsensitive cell 7 so receives light directly from the screen 1 of a scanning cathoderay tube 2 at a transmitter as to generate a signal for compensating local variations in the brightness of the scanning spot on the, screen. The signal controls the intensity of the electronic beam incident on the screen or the gain of an amplifier 6 of image signals. The signal generated by the auxiliary cell is so controlled in amplitude that its magnitude for a given brightness of the scanning spot is independent of the position of the spot on the screen.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB30445/37A GB505197A (en) | 1937-11-05 | 1937-11-05 | Improvements in or relating to television and like systems |
US276160A US2188679A (en) | 1937-11-05 | 1939-05-27 | Television and like system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB30445/37A GB505197A (en) | 1937-11-05 | 1937-11-05 | Improvements in or relating to television and like systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB505197A true GB505197A (en) | 1939-05-05 |
Family
ID=10307794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30445/37A Expired GB505197A (en) | 1937-11-05 | 1937-11-05 | Improvements in or relating to television and like systems |
Country Status (2)
Country | Link |
---|---|
US (1) | US2188679A (en) |
GB (1) | GB505197A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2476698A (en) * | 1946-11-05 | 1949-07-19 | Philco Corp | Beam-velocity control system for cathode-ray tubes |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2705901A (en) * | 1946-01-15 | 1955-04-12 | Chalmers W Sherwin | Oscillographic integrator |
US2530275A (en) * | 1946-03-16 | 1950-11-14 | Weingarten Joseph | Cathode-ray tube image control |
GB641936A (en) * | 1946-08-02 | 1950-08-23 | Cinema Television Ltd | Improvements in or relating to television systems |
US2625265A (en) * | 1947-04-01 | 1953-01-13 | Electric Sorting Machine Compa | Photoelectric sorting apparatus |
US2523328A (en) * | 1948-06-30 | 1950-09-26 | Gen Electric | Cathode-ray mapping system |
US2804498A (en) * | 1950-10-17 | 1957-08-27 | Pye Ltd | Gamma control for flying spot scanner |
US2701850A (en) * | 1951-02-02 | 1955-02-08 | Philco Corp | Automatic focus control for cathoderay tubes |
GB714586A (en) * | 1951-03-29 | 1954-09-01 | Marconi Wireless Telegraph Co | Improvements in or relating to cathode ray tube flying spot scanners |
NL172613B (en) * | 1951-10-12 | Bratland Arthur O T | METHOD FOR THE PREPARATION OF POWDERED MILK PRODUCTS. | |
US2862051A (en) * | 1952-03-05 | 1958-11-25 | Times Facsimile Corp | Method and apparatus for facsimile telegnosis |
US2804550A (en) * | 1952-08-14 | 1957-08-27 | Artzt Maurice | Automatic light control |
US2794361A (en) * | 1952-11-14 | 1957-06-04 | Jr Philip A Shaffer | Electric photometer |
BE524623A (en) * | 1952-11-28 | |||
FR1103472A (en) * | 1953-04-15 | 1955-11-03 | Heraeus Gmbh W C | Dies manufacturing process |
US3004467A (en) * | 1953-06-09 | 1961-10-17 | Fernseh G M B H Fa | Film for use in televising pictures |
US2905757A (en) * | 1954-02-03 | 1959-09-22 | Emi Ltd | Light correcting apparatus for electron pick-up tubes |
DE1009231B (en) * | 1955-01-15 | 1957-05-29 | Fernseh Gmbh | Television film scanners |
GB833206A (en) * | 1955-04-27 | 1960-04-21 | Emi Ltd | Improvements relating to cathode ray display tube circuits |
US3054999A (en) * | 1955-07-20 | 1962-09-18 | Frank P Forbath | Correlation evaluator |
US2915582A (en) * | 1956-03-27 | 1959-12-01 | Rca Corp | Dynamic control circuit for cathode ray tubes |
NL215745A (en) * | 1956-03-29 | |||
US2901539A (en) * | 1956-04-20 | 1959-08-25 | Russell H Morgan | System for the automatic adaptation of television camera apparatus to varying light intensity levels |
FR1182241A (en) * | 1957-03-07 | 1959-06-23 | Int Standard Electric Corp | Electric discharge tube applicable in particular as electronic memory |
DE1193091B (en) * | 1957-08-14 | 1965-05-20 | Hazeltine Corp | Image scanner of improved stability |
US3030546A (en) * | 1957-12-23 | 1962-04-17 | Robert C Ohlmann | Thermal image converter system |
US3243776A (en) * | 1963-02-08 | 1966-03-29 | Ncr Co | Scanning system for registering and reading characters |
GB8923654D0 (en) * | 1989-10-20 | 1989-12-06 | Walker Digital Audio Video Sys | Film weave correction |
-
1937
- 1937-11-05 GB GB30445/37A patent/GB505197A/en not_active Expired
-
1939
- 1939-05-27 US US276160A patent/US2188679A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2476698A (en) * | 1946-11-05 | 1949-07-19 | Philco Corp | Beam-velocity control system for cathode-ray tubes |
Also Published As
Publication number | Publication date |
---|---|
US2188679A (en) | 1940-01-30 |
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