GB505197A - Improvements in or relating to television and like systems - Google Patents

Improvements in or relating to television and like systems

Info

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
Application number
GB30445/37A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baird Television Ltd
Original Assignee
Baird Television Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Baird Television Ltd filed Critical Baird Television Ltd
Priority to GB30445/37A priority Critical patent/GB505197A/en
Publication of GB505197A publication Critical patent/GB505197A/en
Priority to US276160A priority patent/US2188679A/en
Expired legal-status Critical Current

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

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.
GB30445/37A 1937-11-05 1937-11-05 Improvements in or relating to television and like systems Expired GB505197A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
NL92817C (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

Cited By (1)

* Cited by examiner, † Cited by third party
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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