GB1545373A - Cathode ray tube geometry and focus correction circuit - Google Patents

Cathode ray tube geometry and focus correction circuit

Info

Publication number
GB1545373A
GB1545373A GB1845/77A GB184577A GB1545373A GB 1545373 A GB1545373 A GB 1545373A GB 1845/77 A GB1845/77 A GB 1845/77A GB 184577 A GB184577 A GB 184577A GB 1545373 A GB1545373 A GB 1545373A
Authority
GB
United Kingdom
Prior art keywords
ray tube
cathode ray
correction circuit
focus correction
tube geometry
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
GB1845/77A
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.)
Tektronix Inc
Original Assignee
Tektronix Inc
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 Tektronix Inc filed Critical Tektronix Inc
Publication of GB1545373A publication Critical patent/GB1545373A/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
    • H04N3/2335—Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements with calculating means

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)
  • Amplifiers (AREA)
GB1845/77A 1976-05-03 1977-01-18 Cathode ray tube geometry and focus correction circuit Expired GB1545373A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/682,242 US4039899A (en) 1976-05-03 1976-05-03 Geometry and focus correction circuit

Publications (1)

Publication Number Publication Date
GB1545373A true GB1545373A (en) 1979-05-10

Family

ID=24738834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1845/77A Expired GB1545373A (en) 1976-05-03 1977-01-18 Cathode ray tube geometry and focus correction circuit

Country Status (7)

Country Link
US (1) US4039899A (enExample)
JP (1) JPS586425B2 (enExample)
CA (1) CA1096049A (enExample)
DE (1) DE2718904C3 (enExample)
FR (1) FR2350750A1 (enExample)
GB (1) GB1545373A (enExample)
NL (1) NL171402C (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309640A (en) * 1980-01-25 1982-01-05 Tektronix, Inc. Circuit and method for correcting side pincushion distortion and regulating picture width
EP0110282A1 (en) * 1982-11-23 1984-06-13 Tektronix, Inc. Image distortion correction method and apparatus
US4496882A (en) * 1982-12-03 1985-01-29 Motorola, Inc. Inductorless pincushion correction circuit
JPS6057785A (ja) * 1983-09-09 1985-04-03 Hitachi Ltd テレビカメラ装置
BG45024A1 (enExample) * 1986-03-06 1989-03-15 Vasil B Penchev
JPH1146309A (ja) * 1997-07-28 1999-02-16 Mitsubishi Electric Corp Ｃｒｔフォーカスの補正方法、ｃｒｔフォーカス補正回路及びディスプレイ装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517252A (en) * 1969-02-20 1970-06-23 Sanders Associates Inc Linearity correction apparatus for magnetically deflected cathode ray tubes
US3772566A (en) * 1971-05-07 1973-11-13 Loral Corp Linearization of magnetically deflected cathode ray tube with non-axial guns
US3825796A (en) * 1971-06-21 1974-07-23 United Aircraft Corp Crt geometry correction network
US3714501A (en) * 1971-11-26 1973-01-30 Litton Systems Inc Linearity correction for magnetically deflectable cathode ray tubes

Also Published As

Publication number Publication date
DE2718904A1 (de) 1977-11-10
DE2718904B2 (de) 1981-05-07
JPS52133716A (en) 1977-11-09
NL7700723A (nl) 1977-11-07
FR2350750A1 (fr) 1977-12-02
DE2718904C3 (de) 1982-02-04
FR2350750B1 (enExample) 1983-03-18
NL171402C (nl) 1983-03-16
NL171402B (nl) 1982-10-18
CA1096049A (en) 1981-02-17
JPS586425B2 (ja) 1983-02-04
US4039899A (en) 1977-08-02

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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