GB1515336A - Methods of television signal distortion correction - Google Patents

Methods of television signal distortion correction

Info

Publication number
GB1515336A
GB1515336A GB24935/75A GB2493575A GB1515336A GB 1515336 A GB1515336 A GB 1515336A GB 24935/75 A GB24935/75 A GB 24935/75A GB 2493575 A GB2493575 A GB 2493575A GB 1515336 A GB1515336 A GB 1515336A
Authority
GB
United Kingdom
Prior art keywords
signal
channel
display
distortion
generator
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
GB24935/75A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1515336A publication Critical patent/GB1515336A/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
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/14—Control of transmission; Equalising characterised by the equalising network used
    • H04B3/142—Control of transmission; Equalising characterised by the equalising network used using echo-equalisers, e.g. transversal

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Picture Signal Circuits (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

1515336 Television SIEMENS AG 11 June 1975 [25 June 1974] 24935/75 Heading H4F A TV channel distortion correction method is described wherein the difference between the actual distorted signal and a theoretical model desired signal, is employed to control a correcting device in the form of a transversal filter. Camera 1, Fig. 2 produces a signal into which: transmission, 2; channel, 3; receiver, 5; desired signal shaping and display 6, 7 distortions are introduced. Elements 2<SP>1</SP>, 5<SP>1</SP>, 6<SP>1</SP>, 7<SP>1</SP> represent the distortions due to transmission, reception, signal shaping and display respectively, in a "test signal" emanating from generator 9 which passes over the transmission channel thereby acquiring also the channel distortion 3. A second test generator 10 supplies a "model signal" over model channel 11 and signal shaping and display distortion simulations 6<SP>11</SP>, 7<SP>11</SP>. The outputs of display distortion simulators 7' are differenced 12. The output of subtractor 12 is applied to a control device 13 via which corrector 4 is "set up". A very narrow, wide band pulse #(t) is fed to generators 9 and 10, however generator 10 may be fed from the output of channel 3 by provision of a test signal acquisition device 16.
GB24935/75A 1974-06-25 1975-06-11 Methods of television signal distortion correction Expired GB1515336A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742430465 DE2430465C2 (en) 1974-06-25 1974-06-25 ADAPTIVE EQUALIZER FOR EQUALIZATION OF A TELEVISION SIGNAL

Publications (1)

Publication Number Publication Date
GB1515336A true GB1515336A (en) 1978-06-21

Family

ID=5918903

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24935/75A Expired GB1515336A (en) 1974-06-25 1975-06-11 Methods of television signal distortion correction

Country Status (14)

Country Link
JP (1) JPS5127717A (en)
AT (1) AT339394B (en)
AU (1) AU470157B2 (en)
BE (1) BE830641A (en)
CH (1) CH589988A5 (en)
DE (1) DE2430465C2 (en)
DK (1) DK286475A (en)
FR (1) FR2276748A1 (en)
GB (1) GB1515336A (en)
IE (1) IE41166B1 (en)
IT (1) IT1039143B (en)
LU (1) LU72660A1 (en)
NL (1) NL166369C (en)
SE (1) SE397762B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126829A (en) * 1982-09-09 1984-03-28 Link Electronics Ltd Image correction

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072479B1 (en) * 1981-08-13 1987-09-23 Licentia Patent-Verwaltungs-GmbH Apparatus for compensating amplitude and phase distortions in a common-wave radio system
IT1213199B (en) * 1984-07-30 1989-12-14 Himont Inc PLASTIC COPOLYMERS OF PROPYLENE WITH LINEAR DIENAS WITH DOUBLE CONJUGATED LINKS AND PROCEDURE FOR THEIR PREPARATION.
FR2582463B1 (en) * 1985-05-24 1995-01-06 Thomson Video Equip DIGITAL VARIABLE DEPHASER AND DIGITAL VELOCITY CORRECTOR FOR MAGNETOSCOPE USING SUCH A PHASE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126829A (en) * 1982-09-09 1984-03-28 Link Electronics Ltd Image correction

Also Published As

Publication number Publication date
JPS5616994B2 (en) 1981-04-20
AU8228675A (en) 1976-03-04
DE2430465B1 (en) 1976-01-02
FR2276748A1 (en) 1976-01-23
DK286475A (en) 1975-12-26
AU470157B2 (en) 1976-03-04
LU72660A1 (en) 1975-09-29
NL7507477A (en) 1975-12-30
AT339394B (en) 1977-10-10
IT1039143B (en) 1979-12-10
BE830641A (en) 1975-12-29
IE41166L (en) 1975-12-25
CH589988A5 (en) 1977-07-29
NL166369C (en) 1981-07-15
JPS5127717A (en) 1976-03-08
FR2276748B1 (en) 1981-09-18
ATA444375A (en) 1977-02-15
IE41166B1 (en) 1979-11-07
SE397762B (en) 1977-11-14
NL166369B (en) 1981-02-16
DE2430465C2 (en) 1976-07-29
SE7507291L (en) 1975-12-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee