FR2333397A1 - Cushion distortion correction circuit for colour TV receiver - alters deflection coil connected thyristors turn-on point to eliminate distortion - Google Patents

Cushion distortion correction circuit for colour TV receiver - alters deflection coil connected thyristors turn-on point to eliminate distortion

Info

Publication number
FR2333397A1
FR2333397A1 FR7634947A FR7634947A FR2333397A1 FR 2333397 A1 FR2333397 A1 FR 2333397A1 FR 7634947 A FR7634947 A FR 7634947A FR 7634947 A FR7634947 A FR 7634947A FR 2333397 A1 FR2333397 A1 FR 2333397A1
Authority
FR
France
Prior art keywords
deflection coil
point
correction circuit
colour
receiver
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.)
Granted
Application number
FR7634947A
Other languages
French (fr)
Other versions
FR2333397B1 (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.)
RCA Corp
Original Assignee
RCA Corp
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
Priority claimed from GB48353/75A external-priority patent/GB1547170A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of FR2333397A1 publication Critical patent/FR2333397A1/en
Application granted granted Critical
Publication of FR2333397B1 publication Critical patent/FR2333397B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/23—Distortion correction, e.g. for pincushion distortion correction, S-correction
    • H04N3/233—Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/23—Distortion correction, e.g. for pincushion distortion correction, S-correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

The cushion distortion correction circuit, for a colour television receiver, has a thyristor switching circuit between earth and the coupling capacitor connected to the deflection coil circuitry. The thyristor is controlled by a circuit connected to the horizontal and vertical deflection circuits. The turn-on point of the thyristor is advanced progressively during the second part in such a way that the cushion distortion is eliminated. The coupling capacitor connects the thyristor anode to an earthed inductor whose tapping is connected to a deflection coil.
FR7634947A 1975-11-25 1976-11-19 Cushion distortion correction circuit for colour TV receiver - alters deflection coil connected thyristors turn-on point to eliminate distortion Granted FR2333397A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB48353/75A GB1547170A (en) 1975-11-25 1975-11-25 Pincushion correction circuit
GB1687076 1976-04-26

Publications (2)

Publication Number Publication Date
FR2333397A1 true FR2333397A1 (en) 1977-06-24
FR2333397B1 FR2333397B1 (en) 1982-07-16

Family

ID=26252283

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7634947A Granted FR2333397A1 (en) 1975-11-25 1976-11-19 Cushion distortion correction circuit for colour TV receiver - alters deflection coil connected thyristors turn-on point to eliminate distortion

Country Status (27)

Country Link
JP (1) JPS5286719A (en)
AR (1) AR211715A1 (en)
AT (1) AT371297B (en)
AU (1) AU506365B2 (en)
BE (1) BE848705A (en)
BR (1) BR7607736A (en)
CA (1) CA1082354A (en)
CS (1) CS215051B2 (en)
DD (1) DD127895A5 (en)
DE (1) DE2649909C3 (en)
DK (1) DK156600C (en)
EG (1) EG13616A (en)
ES (1) ES453633A1 (en)
FI (1) FI61593C (en)
FR (1) FR2333397A1 (en)
GR (1) GR61731B (en)
HK (1) HK38880A (en)
IL (1) IL50646A (en)
IN (1) IN146051B (en)
IT (1) IT1124720B (en)
MX (1) MX3759E (en)
NL (1) NL188199C (en)
NO (1) NO763999L (en)
NZ (1) NZ182710A (en)
PL (1) PL112647B1 (en)
PT (1) PT65734B (en)
YU (1) YU37462B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1600367A (en) * 1977-07-25 1981-10-14 Rca Corp Pincushion correction circuit
US4179642A (en) * 1977-09-02 1979-12-18 Rca Corporation Raster correction circuit with low dissipation resistive damping
JPS58137410A (en) * 1982-02-12 1983-08-15 Hitachi Constr Mach Co Ltd Conveyable coagulative precipitation apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628082A (en) * 1970-01-27 1971-12-14 Rca Corp Linearity correction circuit utilizing a saturable reactor
US3814982A (en) * 1972-02-15 1974-06-04 Tokyo Shibaura Electric Co Side pincushion distortion correction circuitry
US3863184A (en) * 1973-01-12 1975-01-28 Rca Corp Television scanning linearity device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628082A (en) * 1970-01-27 1971-12-14 Rca Corp Linearity correction circuit utilizing a saturable reactor
US3814982A (en) * 1972-02-15 1974-06-04 Tokyo Shibaura Electric Co Side pincushion distortion correction circuitry
US3863184A (en) * 1973-01-12 1975-01-28 Rca Corp Television scanning linearity device

Also Published As

Publication number Publication date
NL188199C (en) 1992-04-16
PT65734B (en) 1978-04-18
JPS5286719A (en) 1977-07-19
YU37462B (en) 1984-08-31
DD127895A5 (en) 1977-10-19
JPS5639107B2 (en) 1981-09-10
EG13616A (en) 1982-03-31
FI61593B (en) 1982-04-30
BR7607736A (en) 1977-10-04
FR2333397B1 (en) 1982-07-16
DK156600C (en) 1990-03-05
AU1979876A (en) 1978-05-25
AT371297B (en) 1983-06-10
IL50646A (en) 1980-01-31
MX3759E (en) 1981-06-24
GR61731B (en) 1978-12-30
ES453633A1 (en) 1978-03-16
DE2649909C3 (en) 1979-06-13
ATA875076A (en) 1982-10-15
NZ182710A (en) 1980-10-08
YU287576A (en) 1983-04-27
PT65734A (en) 1976-11-01
IT1124720B (en) 1986-05-14
NO763999L (en) 1977-05-26
NL7613090A (en) 1977-05-27
AR211715A1 (en) 1978-02-28
DK528276A (en) 1977-05-26
CA1082354A (en) 1980-07-22
BE848705A (en) 1977-03-16
FI61593C (en) 1982-08-10
PL112647B1 (en) 1980-10-31
HK38880A (en) 1980-07-25
FI763313A (en) 1977-05-26
DE2649909A1 (en) 1977-06-02
DK156600B (en) 1989-09-11
IL50646A0 (en) 1976-12-31
AU506365B2 (en) 1979-12-20
IN146051B (en) 1979-02-10
DE2649909B2 (en) 1978-10-12
CS215051B2 (en) 1982-07-30

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Legal Events

Date Code Title Description
TP Transmission of property