JPH05336394A - Vertical pincushion correction circuit - Google Patents

Vertical pincushion correction circuit

Info

Publication number
JPH05336394A
JPH05336394A JP13832192A JP13832192A JPH05336394A JP H05336394 A JPH05336394 A JP H05336394A JP 13832192 A JP13832192 A JP 13832192A JP 13832192 A JP13832192 A JP 13832192A JP H05336394 A JPH05336394 A JP H05336394A
Authority
JP
Japan
Prior art keywords
circuit
power supply
pincushion correction
vertical pincushion
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
JP13832192A
Other languages
Japanese (ja)
Inventor
Toshio Wakahara
敏夫 若原
Tetsuro Kawamoto
哲朗 河本
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP13832192A priority Critical patent/JPH05336394A/en
Publication of JPH05336394A publication Critical patent/JPH05336394A/en
Pending legal-status Critical Current

Links

Landscapes

  • Details Of Television Scanning (AREA)

Abstract

PURPOSE:To always perform appropriate correction by monitoring a vertical pincushion correcting state and simultaneously, to supply an appropriate source voltage to a horizontal deflection circuit even when steep fluctuation occurs in a horizontal frequency. CONSTITUTION:A power source output voltage is controlled by comparing the mixing output of the modulation waveform of the power source output voltage with output in which the collector pulse of a horizontal output transistor Q1 is detected and peak-rectified with a voltage in which a reference DC voltage is modulated by a vertical pincushion correcting waveform, and vertical pincushion correction quantity is controlled, and also, the appropriate source voltage is supplied to the horizontal deflection circuit 12.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は水平、垂直多周波対応デ
ィスプレーモニター等における縦ピンクッション補正回
路方式に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical pincushion correction circuit system for horizontal and vertical multi-frequency display monitors and the like.

【0002】[0002]

【従来の技術】近年、パーソナルコンピューター等は高
精細度化と共に水平周波数が高くなっており、市場には
高い周波数まで様々な水平周波数に対応できるディスプ
レーモニターが出ている。
2. Description of the Related Art In recent years, the horizontal frequency of personal computers and the like has become higher with higher definition, and there are display monitors on the market which can support various horizontal frequencies up to high frequencies.

【0003】以下に従来のディスプレーモニター縦ピン
クッション補正回路方式について説明する。図2は従来
の縦ピンクッション補正回路方式を示すものである。図
2において、1はチョッパー制御方式電源回路である。
2は水平偏向回路で、3は水平出力トランジスタのコレ
クタパルス検出回路、4はそのパルスのピーク整流回路
である。5は水平振幅制御回路、6は縦ピンクッション
補正波形発生回路で、7はチヨッパー制御方式電源の出
力電圧を制御する誤差増幅回路である。
A conventional display monitor vertical pincushion correction circuit system will be described below. FIG. 2 shows a conventional vertical pincushion correction circuit system. In FIG. 2, reference numeral 1 is a chopper control type power supply circuit.
Reference numeral 2 is a horizontal deflection circuit, 3 is a collector pulse detection circuit for horizontal output transistors, and 4 is a peak rectification circuit for the pulse. Reference numeral 5 is a horizontal amplitude control circuit, 6 is a vertical pincushion correction waveform generating circuit, and 7 is an error amplifying circuit for controlling the output voltage of the chipper control system power supply.

【0004】以上のように構成された縦ピンクッション
補正回路方式について、以下その動作について説明す
る。まず、入力信号の水平周波数が変化すると水平出力
トランジスタQ1のコレクタパルスのピーク値が変化す
る。このパルスが3,4で検出、ピーク整流され、5の
水平振幅制御回路の直流電圧で制御されて7の誤差増幅
回路のマイナス端子に入力される。7のプラス端子は基
準の直流電圧を縦ピンクッション補正波形で変調した電
圧が入力されており、7の出力はプラス端子基準電圧と
マイナス端子電圧の差に縦ピンクッション補正波形の変
調が加わった形となり、1のチョッパー制御方式電源の
出力電圧を制御して水平偏向回路に供給し、縦ピンクッ
ション補正を行っている。
The operation of the vertical pincushion correction circuit system configured as described above will be described below. First, when the horizontal frequency of the input signal changes, the peak value of the collector pulse of the horizontal output transistor Q1 changes. This pulse is detected and peak rectified at 3 and 4, is controlled by the DC voltage of the horizontal amplitude control circuit of 5, and is input to the negative terminal of the error amplification circuit of 7. The voltage obtained by modulating the reference DC voltage with the vertical pincushion correction waveform is input to the positive terminal of 7. The output of 7 is the difference between the positive terminal reference voltage and the negative terminal voltage, and the modulation of the vertical pincushion correction waveform is added. The output voltage of the chopper control type power supply 1 is controlled and supplied to the horizontal deflection circuit to perform vertical pincushion correction.

【0005】[0005]

【発明が解決しようとする課題】しかしながら上記従来
の構成では、垂直周波数が変化すると検出パルスのピー
ク整流特性が変化して縦ピンクッション補正に影響を与
え、また縦ピンクッション補正に対して監視、修正を行
わないため、影響を受けて変化した縦ピンクッション補
正はそのままとなり、ブラウン管管面上の受信信号が曲
がって見えるという問題を有していた。
However, in the above-mentioned conventional configuration, when the vertical frequency changes, the peak rectification characteristic of the detection pulse changes to affect the vertical pincushion correction, and the vertical pincushion correction is monitored. Since no correction is performed, the vertical pincushion correction that has been affected and changed remains as it is, and there is a problem that the received signal on the surface of the cathode ray tube looks bent.

【0006】本発明は上記従来の問題点を解決するもの
で、交流的に、電源出力の変調波形をフィードバックさ
せて縦ピンクッション補正波形と比較し電源出力電圧を
制御する閉ループ制御で、縦ピンクッション補正を常に
監視して修正を行い安定した縦ピンクッション補正を行
う回路方式を提供することを目的とする。
The present invention solves the above-mentioned conventional problems. In the closed-loop control in which the modulation waveform of the power supply output is fed back AC and is compared with the vertical pincushion correction waveform to control the power supply output voltage, the vertical pin is used. An object of the present invention is to provide a circuit system that constantly monitors and corrects the cushion correction to perform stable vertical pincushion correction.

【0007】[0007]

【課題を解決するための手段】この目的を達成するため
に、本発明の回路方式はチヨッパー制御方式の電源回路
と、その電源出力電圧の変調波形を取り出す回路、水平
出力トランジスタのコレクタパルスを検出する回路、こ
のパルスを整流する回路と、縦ピンクッション補正波形
発生回路と、チョッパー制御方式電源の出力電圧を制御
する誤差増幅回路の構成を有している。
In order to achieve this object, the circuit system of the present invention is a power supply circuit of a chipper control system, a circuit for extracting a modulation waveform of the power supply output voltage, and a collector pulse of a horizontal output transistor. Circuit, a circuit for rectifying this pulse, a vertical pincushion correction waveform generation circuit, and an error amplification circuit for controlling the output voltage of the chopper control type power supply.

【0008】[0008]

【作用】この構成によって、縦ピンクッション補正のた
めに変調された電源出力電圧の波形が垂直周波数の変化
によって変化すると、この変調波形がフィードバックさ
れて誤差増幅回路により交流的に縦ピンクッション補正
波形と比較されてチヨッパー制御方式電源回路を制御し
補正を修正するため、常に安定した縦ピンクッション補
正を行うことができる。同時に誤差増幅回路では、直流
的にはピーク整流の出力電圧と基準電圧との比較が行わ
れているため、適切な出力電圧を水平偏向回路に供給す
ることができる。
With this configuration, when the waveform of the power supply output voltage modulated for vertical pincushion correction changes due to the change in vertical frequency, this modulated waveform is fed back and the error amplifier circuit AC-converts the vertical pincushion correction waveform. The correction of the correction is performed by controlling the power supply circuit of the chipper control system in comparison with the above, so that stable vertical pincushion correction can always be performed. At the same time, in the error amplifier circuit, the output voltage of the peak rectification is compared with the reference voltage in terms of direct current, so that an appropriate output voltage can be supplied to the horizontal deflection circuit.

【0009】[0009]

【実施例】以下本発明の一実施例について、図面を参照
しながら説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

【0010】図1において、11は12の水平偏向回路
に電源を供給するチヨッパー制御方式電源回路であり、
13は水平出力トランジスタQ1のコレクタパルスを検
出する回路14はこのパルスをピーク整流する回路であ
る。15は水平振幅制御回路、16は電源出力電圧の変
調波形を取り出す回路、17はピーク整流からの出力と
電源出力電圧変調波形のミキシング回路、18は縦ピン
クッション補正用波形発生回路、19は誤差増幅回路で
ある。
In FIG. 1, reference numeral 11 is a chipper control type power supply circuit for supplying power to 12 horizontal deflection circuits,
Reference numeral 13 is a circuit for detecting the collector pulse of the horizontal output transistor Q1 and reference numeral 14 is a circuit for peak rectifying this pulse. Reference numeral 15 is a horizontal amplitude control circuit, 16 is a circuit for extracting a modulation waveform of the power supply output voltage, 17 is a mixing circuit for the output from the peak rectification and the power supply output voltage modulation waveform, 18 is a vertical pincushion correction waveform generation circuit, and 19 is an error. It is an amplifier circuit.

【0011】以上のように構成された回路方式について
その動作を説明する。まず水平出力トランジスタQ1の
コレクタパルスをコンデンサC1,C2で検出し、トラ
ンジスタQ2を通してダイオードD1とコンデンサC3
でピーク整流する。そして15の水平振幅制御回路の直
流電圧レベルでピーク整流出力レベルを制御した後、1
6で取り出した変調波形交流成分と17の回路でミキシ
ングして19のマイナス端子に入力される。19のプラ
ス端子は基準直流電圧を縦ピンクッション補正波形で変
調した電圧が入力され、19の出力は、交流的には縦ピ
ンクッション補正波形とフィールドバックされた電源変
調波形との差の出力、直流的には基準電圧とピーク整流
出力との差の出力となり、これでチヨッパー制御方式電
源の出力電圧が制御されて縦ピンクッション補正と同時
に水平偏向回路に適切な電圧の供給を行う。
The operation of the circuit system configured as above will be described. First, the collector pulse of the horizontal output transistor Q1 is detected by the capacitors C1 and C2, and the diode D1 and the capacitor C3 are passed through the transistor Q2.
Peak rectification at. Then, after controlling the peak rectification output level by the DC voltage level of the horizontal amplitude control circuit of 15, 1
The modulated waveform AC component extracted in 6 and the circuit in 17 are mixed and input to the negative terminal of 19. A voltage obtained by modulating the reference DC voltage with the vertical pincushion correction waveform is input to the positive terminal of 19, and the output of 19 is the output of the difference between the vertical pincushion correction waveform and the field-backed power supply modulation waveform in terms of AC. In terms of direct current, the output is the difference between the reference voltage and the peak rectified output, and this controls the output voltage of the power supply of the chipper control system to perform vertical pincushion correction and simultaneously supply an appropriate voltage to the horizontal deflection circuit.

【0012】[0012]

【発明の効果】以上のように本発明は電源出力電圧の変
調波形を取り出す回路を設けることにより、交流的には
この変調波形と縦ピンクッション補正波形とを波形比較
してチョッパー制御方式電源を制御することにより、常
に安定した縦ピンクッション補正を容易に実現できるも
のである。
As described above, according to the present invention, by providing a circuit for extracting the modulation waveform of the power supply output voltage, the modulation waveform and the vertical pincushion correction waveform are compared in terms of alternating current, and a chopper control type power supply is provided. By controlling, it is possible to easily realize stable vertical pincushion correction.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の第一実施例における縦ピンクッション
補正回路方式図
FIG. 1 is a diagram of a vertical pincushion correction circuit system according to a first embodiment of the present invention.

【図2】従来の縦ピンクッション補正回路方式図[Fig. 2] Conventional vertical pincushion correction circuit system diagram

【符号の説明】[Explanation of symbols]

11 チョッパー制御方式電源回路 12 水平偏向回路 13 水平出力トランジスタのコレクタパルス検出回路 14 ピーク整流回路 15 水平振幅制御回路 16 電源電圧変調波形フィールドバック回路 17 ミキシング回路 18 縦ピンクッション補正波形発生回路 19 誤差増幅回路 FBT フライバックトランス V 電圧 11 Chopper Control System Power Supply Circuit 12 Horizontal Deflection Circuit 13 Horizontal Output Transistor Collector Pulse Detection Circuit 14 Peak Rectification Circuit 15 Horizontal Amplitude Control Circuit 16 Power Supply Voltage Modulation Waveform Fieldback Circuit 17 Mixing Circuit 18 Vertical Pincushion Correction Waveform Generation Circuit 19 Error Amplification Circuit FBT Flyback transformer V voltage

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 チョッパー制御方式電源回路と、その電
源出力電圧の変調波形をフィードバックする回路と、縦
ピンクッション補正波形発生回路と、チョッパー制御方
式電源を制御する誤差増幅回路とを備え、電源出力電圧
の変調波形と縦ピンクッション補正波形とを誤差増幅回
路で波形比較して電源出力電圧を制御し、縦ピンクッシ
ョン補正を行うことを特徴とする縦ピンクッショ補正回
路。
1. A chopper control system power supply circuit, a circuit for feeding back a modulation waveform of a power supply output voltage thereof, a vertical pincushion correction waveform generation circuit, and an error amplification circuit for controlling a chopper control system power supply. A vertical pincushion correction circuit characterized by performing a vertical pincushion correction by controlling the power supply output voltage by comparing the voltage modulation waveform and the vertical pincushion correction waveform with an error amplification circuit.
【請求項2】 チョッパー制御方式電源回路と、水平出
力トランジスタのコレクタパルスを検出する回路と、こ
のパルスをピーク整流する回路と、チョッパー電源出力
電圧の変調波形をフィードバックする回路と、この変調
波形とピーク整流出力とをミキシングする回路と、縦ピ
ンクッション補正用波形発生回路と、チョッパー制御方
式電源を制御する誤差増幅回路とを備え、ミキシング回
路からの電圧と基準電圧を縦ピンクッション補正波形で
変調した電圧とを誤差増幅回路で比較して電源出力電圧
を制御し、縦ピンクッション補正を行うと同時に水平周
波数に応じた適切な電源出力電圧を供給することを特徴
とする縦ピンクッション補正回路。
2. A chopper control type power supply circuit, a circuit for detecting a collector pulse of a horizontal output transistor, a circuit for peak rectifying this pulse, a circuit for feeding back a modulation waveform of a chopper power supply output voltage, and this modulation waveform. Equipped with a circuit that mixes the peak rectified output, a vertical pincushion correction waveform generation circuit, and an error amplification circuit that controls the chopper control power supply, and modulates the voltage from the mixing circuit and the reference voltage with the vertical pincushion correction waveform. The vertical pincushion correction circuit is characterized by comparing the generated voltage with an error amplification circuit to control the power supply output voltage to perform vertical pincushion correction and at the same time supply an appropriate power supply output voltage according to the horizontal frequency.
【請求項3】 外部から出力電圧制御を行う電源と、そ
の出力電圧の変調波形をフィールドバックする回路と、
縦ピンクッション補正波形発生回路と、電源を制御する
誤差増幅回路とを備え、電源出力電圧の変調波形と縦ピ
ンクッション補正波形とを誤差増幅回路で波形比較して
電源出力電圧を制御し、縦ピンクッション補正を行うこ
とを特徴とする縦ピンクッション補正回路。
3. A power source for externally controlling the output voltage, and a circuit for field-backing the modulation waveform of the output voltage.
A vertical pincushion correction waveform generation circuit and an error amplification circuit that controls the power supply are provided, and the power amplifier output voltage is controlled by comparing the power supply output voltage modulation waveform and the vertical pincushion correction waveform with the error amplification circuit. Vertical pincushion correction circuit characterized by performing pincushion correction.
JP13832192A 1992-05-29 1992-05-29 Vertical pincushion correction circuit Pending JPH05336394A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13832192A JPH05336394A (en) 1992-05-29 1992-05-29 Vertical pincushion correction circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13832192A JPH05336394A (en) 1992-05-29 1992-05-29 Vertical pincushion correction circuit

Publications (1)

Publication Number Publication Date
JPH05336394A true JPH05336394A (en) 1993-12-17

Family

ID=15219172

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13832192A Pending JPH05336394A (en) 1992-05-29 1992-05-29 Vertical pincushion correction circuit

Country Status (1)

Country Link
JP (1) JPH05336394A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6118232A (en) * 1997-06-02 2000-09-12 Nec Corporation Circuit for compensating deflection in a display unit without picture distortion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6118232A (en) * 1997-06-02 2000-09-12 Nec Corporation Circuit for compensating deflection in a display unit without picture distortion

Similar Documents

Publication Publication Date Title
KR100247393B1 (en) Power supply control device of display device having pfc function
US3629686A (en) Voltage supply apparatus for applying a direct current to a periodically varying load
KR200204874Y1 (en) Switching mode power supply with transient voltage stabilization circuit
US4010401A (en) Constant-voltage converter having beam current detector
JP2944667B2 (en) Television device and its power supply
US4677350A (en) Raster width correction apparatus for multi scan frequency monitors
JPH05336394A (en) Vertical pincushion correction circuit
US4318036A (en) Pulse width modulator for a television receiver
KR19980015197A (en) The monitor's automatic power control circuit for use with a monitor
KR100209505B1 (en) Circuit for change of duty circle
JPH01302967A (en) High voltage stabilization circuit
KR100218011B1 (en) Generating circuit of horizontal retrace time adjusting pulse in a display device
JPH0374996B2 (en)
JPH0583953A (en) Output voltage compensating apparatus of uninterruptible power supply equipment
GB2309136A (en) Self raster circuit for a monitor
JPH05183769A (en) Horizontal deflection circuit
KR100206068B1 (en) Circuit for correcting north-south distortion image
JPH0536974U (en) Horizontal amplitude correction circuit
JP2650999B2 (en) Horizontal deflection circuit
KR20010010989A (en) High voltage regulation circuit in a monitor
US6396171B1 (en) Circuit for stabilizing a high voltage
JP2539476B2 (en) Horizontal deflection high voltage circuit
JP2865145B2 (en) Back raster controller for cathode ray tube
JPS6110383Y2 (en)
KR0142764B1 (en) High voltage stabilization circuit