GB512109A - Improvements in or relating to television or other signal transmission systems - Google Patents

Improvements in or relating to television or other signal transmission systems

Info

Publication number
GB512109A
GB512109A GB36150/38A GB3615038A GB512109A GB 512109 A GB512109 A GB 512109A GB 36150/38 A GB36150/38 A GB 36150/38A GB 3615038 A GB3615038 A GB 3615038A GB 512109 A GB512109 A GB 512109A
Authority
GB
United Kingdom
Prior art keywords
television
relating
signal transmission
transmission systems
systems
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
GB36150/38A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB512109A publication Critical patent/GB512109A/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
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/18—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
    • H04N5/185—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/165—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant
GB36150/38A 1937-12-24 1937-12-24 Improvements in or relating to television or other signal transmission systems Expired GB512109A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35791/37A GB508377A (en) 1937-12-24 1937-12-24 Improvements in or relating to television or other signal transmission systems

Publications (1)

Publication Number Publication Date
GB512109A true GB512109A (en) 1939-08-29

Family

ID=10381590

Family Applications (2)

Application Number Title Priority Date Filing Date
GB35791/37A Expired GB508377A (en) 1937-12-24 1937-12-24 Improvements in or relating to television or other signal transmission systems
GB36150/38A Expired GB512109A (en) 1937-12-24 1937-12-24 Improvements in or relating to television or other signal transmission systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB35791/37A Expired GB508377A (en) 1937-12-24 1937-12-24 Improvements in or relating to television or other signal transmission systems

Country Status (4)

Country Link
US (1) US2244240A (en)
DE (1) DE888563C (en)
FR (1) FR847974A (en)
GB (2) GB508377A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525106A (en) * 1946-11-21 1950-10-10 Rca Corp Electronic keyer for direct current restoration
US2609443A (en) * 1948-12-29 1952-09-02 Rca Corp Keyed automatic gain control
DE1011920B (en) * 1951-12-05 1957-07-11 Emi Ltd Circuit for level adjustment of electrical image signals
US2875277A (en) * 1953-01-15 1959-02-24 Pye Ltd Television receivers

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445040A (en) * 1943-05-13 1948-07-13 Rca Corp Dark spot corrector
BE464760A (en) * 1944-12-26
US2543037A (en) * 1946-01-07 1951-02-27 Farnsworth Res Corp Television receiver
US2548436A (en) * 1946-01-25 1951-04-10 Hazeltine Corp Television receiver background control circuit
US2550178A (en) * 1946-11-21 1951-04-24 Rca Corp Direct current reinsertion circuit for television systems
US2554317A (en) * 1946-12-18 1951-05-22 Rca Corp Clamp circuit
US2546338A (en) * 1947-05-13 1951-03-27 Du Mont Allen B Lab Inc Circuit for minimizing transients during switching between two video channels
US2539454A (en) * 1947-10-02 1951-01-30 Farnsworth Television & Radio Picture signal mixer circuit
BE486285A (en) * 1947-12-13
GB688200A (en) * 1948-07-15 1953-03-04 Emi Ltd Improvements relating to television transmitting systems
AT29106B (en) * 1948-08-10 1907-07-10 Alois Dichtl Process for the preparation of a fertilizer for rats, mice and the like. like
BE492808A (en) * 1948-12-18
GB666289A (en) * 1949-05-19 1952-02-06 Emi Ltd Improvements in or relating to television transmission systems
BE506959A (en) * 1950-11-09
US2828356A (en) * 1951-12-07 1958-03-25 Rca Corp Clamped synchronizing signal separator
GB753424A (en) * 1953-09-08 1956-07-25 Standard Telephones Cables Ltd An arrangement for suppressing the direct current component in television signals
US3259760A (en) * 1963-11-07 1966-07-05 Massachusetts Inst Technology Peak holding circuit
US3492594A (en) * 1966-07-11 1970-01-27 Cohu Electronics Inc D.c. restorer amplifier circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525106A (en) * 1946-11-21 1950-10-10 Rca Corp Electronic keyer for direct current restoration
US2609443A (en) * 1948-12-29 1952-09-02 Rca Corp Keyed automatic gain control
DE1011920B (en) * 1951-12-05 1957-07-11 Emi Ltd Circuit for level adjustment of electrical image signals
US2875277A (en) * 1953-01-15 1959-02-24 Pye Ltd Television receivers

Also Published As

Publication number Publication date
GB508377A (en) 1939-06-26
US2244240A (en) 1941-06-03
DE888563C (en) 1953-09-03
FR847974A (en) 1939-10-19

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