GB521744A - Improvements in or relating to electric signal transmission systems - Google Patents

Improvements in or relating to electric signal transmission systems

Info

Publication number
GB521744A
GB521744A GB30210/38A GB3021038A GB521744A GB 521744 A GB521744 A GB 521744A GB 30210/38 A GB30210/38 A GB 30210/38A GB 3021038 A GB3021038 A GB 3021038A GB 521744 A GB521744 A GB 521744A
Authority
GB
United Kingdom
Prior art keywords
signal
successive
datum portions
signals
portions
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
GB30210/38A
Other languages
English (en)
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
Priority to GB30210/38A priority Critical patent/GB521744A/en
Priority to US301324A priority patent/US2284085A/en
Priority to FR862398D priority patent/FR862398A/fr
Publication of GB521744A publication Critical patent/GB521744A/en
Priority to NL137633A priority patent/NL81368C/xx
Priority to DEE2160A priority patent/DE836045C/de
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
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/52—Automatic gain control
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Control Of Amplification And Gain Control (AREA)
GB30210/38A 1938-10-19 1938-10-19 Improvements in or relating to electric signal transmission systems Expired GB521744A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB30210/38A GB521744A (en) 1938-10-19 1938-10-19 Improvements in or relating to electric signal transmission systems
US301324A US2284085A (en) 1938-10-19 1939-10-26 Electric signal transmission system
FR862398D FR862398A (fr) 1938-10-19 1939-12-18 Perfectionnements aux systèmes de transmission de signaux électriques
NL137633A NL81368C (enrdf_load_stackoverflow) 1938-10-19 1947-12-29
DEE2160A DE836045C (de) 1938-10-19 1950-09-21 System zur UEbertragung elektrischer Signale mit wiederkehrenden Festpegel- oder Bezugswerten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB30210/38A GB521744A (en) 1938-10-19 1938-10-19 Improvements in or relating to electric signal transmission systems

Publications (1)

Publication Number Publication Date
GB521744A true GB521744A (en) 1940-05-30

Family

ID=10304024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30210/38A Expired GB521744A (en) 1938-10-19 1938-10-19 Improvements in or relating to electric signal transmission systems

Country Status (5)

Country Link
US (1) US2284085A (enrdf_load_stackoverflow)
DE (1) DE836045C (enrdf_load_stackoverflow)
FR (1) FR862398A (enrdf_load_stackoverflow)
GB (1) GB521744A (enrdf_load_stackoverflow)
NL (1) NL81368C (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE464760A (enrdf_load_stackoverflow) * 1944-12-26
US2550178A (en) * 1946-11-21 1951-04-24 Rca Corp Direct current reinsertion circuit for television systems
NL82308C (enrdf_load_stackoverflow) * 1949-06-04
US2829197A (en) * 1951-02-16 1958-04-01 Avco Mfg Corp Noise limiter for television receiver
US2907822A (en) * 1952-04-17 1959-10-06 Marconi Wireless Telegraph Co Interference reduction in television and other communication systems

Also Published As

Publication number Publication date
US2284085A (en) 1942-05-26
NL81368C (enrdf_load_stackoverflow) 1956-05-15
DE836045C (de) 1952-04-07
FR862398A (fr) 1941-03-12

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