GB1548111A - Vertical deflection circuit for a cathode ray picture tube with pin-cushion distortion correction circiut - Google Patents

Vertical deflection circuit for a cathode ray picture tube with pin-cushion distortion correction circiut

Info

Publication number
GB1548111A
GB1548111A GB591077A GB591077A GB1548111A GB 1548111 A GB1548111 A GB 1548111A GB 591077 A GB591077 A GB 591077A GB 591077 A GB591077 A GB 591077A GB 1548111 A GB1548111 A GB 1548111A
Authority
GB
United Kingdom
Prior art keywords
picture tube
vertical
vertical deflection
circiut
pin
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
GB591077A
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.)
SABA GmbH
Original Assignee
SABA GmbH
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 SABA GmbH filed Critical SABA GmbH
Publication of GB1548111A publication Critical patent/GB1548111A/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)

Abstract

To correct pincushion distortions of the picture in the vertical direction on the screen of a colour television picture tube, the vertical output amplifier is supplied with a correction signal (3) in addition to the frame signal (2). This correction signal consists of line-frequency squarewave pulses which are sawtooth-modulated at frame rate in amplitude and phase. The output of the vertical output amplifier (1) is connected to a series resonant circuit (4, 5), the capacitor (5) being connected to earth and the vertical deflection coil (6) being connected to this capacitor (5). The output impedance of the vertical output amplifier (1) is reduced for line frequency by voltage feedback (10, 11). These measures simplify the construction of the correction circuit. Neither a transductor nor a transformer or an additional amplifier are needed for injecting the correction signal. <IMAGE>
GB591077A 1976-02-11 1977-02-11 Vertical deflection circuit for a cathode ray picture tube with pin-cushion distortion correction circiut Expired GB1548111A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762605251 DE2605251B1 (en) 1976-02-11 1976-02-11 Vertical deflection circuit for a cathode ray picture tube with a pincushion distortion correction circuit

Publications (1)

Publication Number Publication Date
GB1548111A true GB1548111A (en) 1979-07-04

Family

ID=5969531

Family Applications (1)

Application Number Title Priority Date Filing Date
GB591077A Expired GB1548111A (en) 1976-02-11 1977-02-11 Vertical deflection circuit for a cathode ray picture tube with pin-cushion distortion correction circiut

Country Status (9)

Country Link
AT (1) AT348041B (en)
BE (1) BE851376A (en)
CH (1) CH613324A5 (en)
DE (1) DE2605251B1 (en)
DK (1) DK144650C (en)
FR (1) FR2341241A1 (en)
GB (1) GB1548111A (en)
IT (1) IT1125758B (en)
NL (1) NL7701478A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619279A1 (en) * 1986-06-11 1987-12-17 Thomson Brandt Gmbh CIRCUIT ARRANGEMENT FOR ELIMINATING GEOMETRY DISTORTIONS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT251664B (en) * 1963-11-02 1967-01-10 Telefunken Patent Circuit arrangement for improving the interlacing of the vertical deflection circuits
US3916254A (en) * 1974-02-13 1975-10-28 Warwick Electronics Inc Adjustable pincushion correction circuit
IT1020883B (en) * 1974-09-27 1977-12-30 Indesit CIRCUIT FOR VERTI CALE DEFLECTION IN A CATHODE-RAYED TUBE

Also Published As

Publication number Publication date
DE2605251B1 (en) 1977-07-07
ATA91677A (en) 1978-06-15
IT1125758B (en) 1986-05-14
FR2341241A1 (en) 1977-09-09
AT348041B (en) 1979-01-25
BE851376A (en) 1977-05-31
DK144650B (en) 1982-04-26
NL7701478A (en) 1977-08-15
DK144650C (en) 1982-10-04
FR2341241B1 (en) 1983-07-18
CH613324A5 (en) 1979-09-14
DK56777A (en) 1977-08-12

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930211