GB1515336A - Methods of television signal distortion correction - Google Patents
Methods of television signal distortion correctionInfo
- 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
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.
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)
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)
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 |
-
1974
- 1974-06-25 DE DE19742430465 patent/DE2430465C2/en not_active Expired
-
1975
- 1975-06-05 LU LU72660A patent/LU72660A1/xx unknown
- 1975-06-10 CH CH746575A patent/CH589988A5/xx not_active IP Right Cessation
- 1975-06-11 GB GB24935/75A patent/GB1515336A/en not_active Expired
- 1975-06-11 AT AT444375A patent/AT339394B/en not_active IP Right Cessation
- 1975-06-17 IE IE1355/75A patent/IE41166B1/en unknown
- 1975-06-20 IT IT24570/75A patent/IT1039143B/en active
- 1975-06-20 AU AU82286/75A patent/AU470157B2/en not_active Expired
- 1975-06-23 NL NL7507477.A patent/NL166369C/en not_active IP Right Cessation
- 1975-06-24 FR FR7519700A patent/FR2276748A1/en active Granted
- 1975-06-24 DK DK286475A patent/DK286475A/en unknown
- 1975-06-25 JP JP50079310A patent/JPS5127717A/en active Granted
- 1975-06-25 SE SE7507291A patent/SE397762B/en unknown
- 1975-06-25 BE BE157683A patent/BE830641A/en unknown
Cited By (1)
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 |
---|---|
NL7507477A (en) | 1975-12-30 |
CH589988A5 (en) | 1977-07-29 |
NL166369B (en) | 1981-02-16 |
ATA444375A (en) | 1977-02-15 |
DK286475A (en) | 1975-12-26 |
AT339394B (en) | 1977-10-10 |
FR2276748B1 (en) | 1981-09-18 |
AU470157B2 (en) | 1976-03-04 |
JPS5127717A (en) | 1976-03-08 |
SE397762B (en) | 1977-11-14 |
JPS5616994B2 (en) | 1981-04-20 |
IE41166L (en) | 1975-12-25 |
LU72660A1 (en) | 1975-09-29 |
NL166369C (en) | 1981-07-15 |
FR2276748A1 (en) | 1976-01-23 |
IT1039143B (en) | 1979-12-10 |
BE830641A (en) | 1975-12-29 |
SE7507291L (en) | 1975-12-29 |
DE2430465B1 (en) | 1976-01-02 |
IE41166B1 (en) | 1979-11-07 |
DE2430465C2 (en) | 1976-07-29 |
AU8228675A (en) | 1976-03-04 |
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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 |