JPS56134880A - Horizontal deflection correction system - Google Patents

Horizontal deflection correction system

Info

Publication number
JPS56134880A
JPS56134880A JP3807780A JP3807780A JPS56134880A JP S56134880 A JPS56134880 A JP S56134880A JP 3807780 A JP3807780 A JP 3807780A JP 3807780 A JP3807780 A JP 3807780A JP S56134880 A JPS56134880 A JP S56134880A
Authority
JP
Japan
Prior art keywords
capacitor
waveform
point
vcg
voltage
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.)
Pending
Application number
JP3807780A
Other languages
Japanese (ja)
Inventor
Nobumasa Oya
Kokichi Dozaki
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3807780A priority Critical patent/JPS56134880A/en
Publication of JPS56134880A publication Critical patent/JPS56134880A/en
Pending 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

PURPOSE:To reduce vertical picture distortion by adding a peak detecting circuit, consisting of a resistance, capacitor and diode, to a horizontal deflecting circuit for the correction of a vertical picture. CONSTITUTION:Resistance 11, capacitor 9 and diode 10 constitute a peak detecting circuit. If a white level increases in horizontal deflection, the amplitude of horizontal deflecting current iL decreases as shown by 17 in figure (b), and voltage Vc of capacitor 8 has waveform 18 shown in figure (d). Since capacitor 9 is charged to voltage Vcg, the level of waveform 18 of voltage Vc when Vc<Vcg is clamped by Vcg at point (g) without varying from point (f) to point (h) after point (g) to obtain (j) and (k), and in the next cycle, the waveform agrees with waveform 15. In this state, the level is clamped by voltage Vcg to obtain a vertical picture with a little distortion.
JP3807780A 1980-03-25 1980-03-25 Horizontal deflection correction system Pending JPS56134880A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3807780A JPS56134880A (en) 1980-03-25 1980-03-25 Horizontal deflection correction system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3807780A JPS56134880A (en) 1980-03-25 1980-03-25 Horizontal deflection correction system

Publications (1)

Publication Number Publication Date
JPS56134880A true JPS56134880A (en) 1981-10-21

Family

ID=12515420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3807780A Pending JPS56134880A (en) 1980-03-25 1980-03-25 Horizontal deflection correction system

Country Status (1)

Country Link
JP (1) JPS56134880A (en)

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