JPH01157187A - Conversence correcting device - Google Patents

Conversence correcting device

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Publication number
JPH01157187A
JPH01157187A JP31572587A JP31572587A JPH01157187A JP H01157187 A JPH01157187 A JP H01157187A JP 31572587 A JP31572587 A JP 31572587A JP 31572587 A JP31572587 A JP 31572587A JP H01157187 A JPH01157187 A JP H01157187A
Authority
JP
Japan
Prior art keywords
coil
magnetic field
coils
correcting
generates
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
JP31572587A
Other languages
Japanese (ja)
Other versions
JPH0588036B2 (en
Inventor
Toru Yamazaki
徹 山崎
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP31572587A priority Critical patent/JPH01157187A/en
Publication of JPH01157187A publication Critical patent/JPH01157187A/en
Publication of JPH0588036B2 publication Critical patent/JPH0588036B2/ja
Granted legal-status Critical Current

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Abstract

PURPOSE:To cause frame error correction to be suitable over whole screen by providing the plural couples of frame error correcting coils and canceling a correcting over part, which is generated by one correcting coil, with the other correcting coil. CONSTITUTION:A frame error correcting coil 3a, which is wound to a core 2, generates a magnetic field to have a line 5a of magnetic force and a coil 4a generates the magnetic field to have a line 6a of magnetic force. Then, a frame error correcting coil 3b, which is wound to a core 1, generates the magnetic field to have a line 5b of magnetic force and a coil 4b generates the magnetic field to have a line 6b of magnetic force. The core 1 and 2 are provided near the electron gun of a television picture tube and a current in a sawtooth shape wave form, which is synchronized with a vertical deflecting period, is flown to the coils 3a and 4a. Then, conversence dislocation, which is generated with accompanying vertical deflection in the generated magnetic field, is corrected and the coils 3b and 4b are driven by the current in a waveform besides the sawtooth waveform to be synchronized to the vertical deflecting period. Then, the magnetic field of the reverse polarity of the coils 3a and 4a is generated and the conversence dislocation to accompany the correcting over due to the coils 3a and 4a is corrected.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はコンバーゼンス補正装置に係り、特にインライ
ン形電子銃及び、セルフコンバーゼンス型偏向ヨークを
有するカラー受像管のコンバーゼンス補正装置に関する
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a convergence correction device, and more particularly to a convergence correction device for an in-line electron gun and a color picture tube having a self-convergence type deflection yoke.

従来の技術 一般に、カラーテレビジョン受像機に使用するカラー受
像管においては、3つの電子銃から個々に出射された電
子ビームが螢光面において集束するだけでなく、シャド
ウマスクの同じ穴に集中(コンバーゼンス)することが
必要である。
2. Description of the Related Art In general, in a color picture tube used in a color television receiver, the electron beams individually emitted from three electron guns are not only focused on the fluorescent surface, but also concentrated on the same hole in the shadow mask ( Convergence) is necessary.

このため、従来の3電子銃インライン型カラー受像管で
は3電子ビームが螢光面上において、良好な集中を得る
ことができるようにするために、垂直偏向磁界をバレル
型水平偏向磁界をビンクツション型の磁界分布とするセ
ルフコンバーゼンス型偏向ヨークを備えた偏向装置が用
いられる。
For this reason, in the conventional three-electron gun in-line color picture tube, in order to obtain good concentration of the three electron beams on the fluorescent surface, the vertical deflection magnetic field is barrel type, and the horizontal deflection magnetic field is changed to binction type. A deflection device equipped with a self-convergence type deflection yoke that provides a magnetic field distribution is used.

しかし、セルフコンバーゼンス型偏向ヨークでは第6図
に示すようなコマ収差によるセンタービームGとサイド
ビームR,Bのコンバーゼンスずれ(以下コマエラーと
呼ぶ)dが生じることは周知のことである。このコマエ
ラーの内型直方向のコマエラーを補正するために従来第
7図に示す様に電子銃内の3本のビームR,G、Bを必
要に応じてシールドまたはエンハンスするための磁性片
22a、22b、23a、23bを配設するか、第8図
(A>に示す様に6極磁界または第8図(B)に示す4
極磁界を発生させるコイルを1組電子銃の近傍に配設す
るようにしている。なお、第8図に示すような磁界を発
生するコイルに流す電流は垂直偏向周期をもつ鋸歯状波
形として供給されていた。
However, it is well known that in the self-convergence type deflection yoke, a convergence deviation (hereinafter referred to as coma error) d between the center beam G and the side beams R and B due to coma aberration occurs as shown in FIG. In order to correct this coma error in the direction perpendicular to the inner die, as shown in FIG. 22b, 23a, 23b, or a six-pole magnetic field as shown in Figure 8 (A>) or a four-pole magnetic field as shown in Figure 8 (B).
A set of coils for generating a polar magnetic field is arranged near the electron gun. Note that the current flowing through the coil that generates the magnetic field as shown in FIG. 8 was supplied in the form of a sawtooth waveform with a vertical deflection period.

発明が解決しようとする問題点 しかるに、第7図、第8図に示すような従来の補正装置
により垂直方向のコマエラー補正を画面の上下辺で最適
゛になる様に行なった場合、第9図に示すように画面の
中央部25と上辺部24の間の画面中間部26で補正が
オーバーとなってしまう。
Problems to be Solved by the Invention However, when vertical coma error correction is performed optimally on the upper and lower sides of the screen using a conventional correction device as shown in FIGS. 7 and 8, as shown in FIG. As shown in the figure, the correction becomes excessive in the middle part 26 of the screen between the center part 25 and the upper side part 24 of the screen.

これを垂直偏向距離とコマエラー補正オーバー量との関
係で見ると第10図に示す様な曲線となり、コンバーゼ
ンス品位を損なう等の問題点があった。
When this is viewed in terms of the relationship between the vertical deflection distance and the amount of overcorrection of the coma error, it becomes a curve as shown in FIG. 10, which causes problems such as deterioration of convergence quality.

本発明は上記の点に鑑みてなされたもので画面全面でコ
マエラー補正が最適となるコンバーゼンス補正装置を提
供することを目的とする。
The present invention has been made in view of the above points, and an object of the present invention is to provide a convergence correction device that can perform optimal coma error correction over the entire screen.

問題点を解決するための手段 本発明はセルフコンバーゼンス型偏向ヨークを備えたイ
ンライン型カラー受像管の電子銃近傍に少なくとも1組
設けられ垂直偏向周期と同期した鋸歯状波形の電流が流
され、垂直偏向によ−り生ずるコンバーゼンスずれを補
正する第1のコマエラー補正コイルと、電子銃近傍に少
なくとも1組設けられ垂直偏向周期と同期した鋸歯状波
形以外の波形の電流により駆動され、第1のコマエラー
補正コイルとは逆極性の磁束を発生させ、該第1のコマ
エラー補正コイルによる補正オーバーに伴なうコンバー
ゼンスずれを補正する第2のコマエラー補正コイルとよ
りなる、。
Means for Solving the Problems The present invention provides at least one pair of in-line color picture tubes equipped with a self-convergence type deflection yoke in the vicinity of the electron gun, in which a sawtooth waveform current synchronized with the vertical deflection period is passed. A first coma error correction coil is provided for correcting convergence deviation caused by deflection, and at least one set is provided near the electron gun and is driven by a current having a waveform other than a sawtooth waveform synchronized with the vertical deflection period. The second coma error correction coil generates a magnetic flux having a polarity opposite to that of the correction coil and corrects a convergence shift caused by over-correction by the first coma error correction coil.

作用 第1のコマエラー補正コイルはセルフコンバーゼンス型
偏向ヨークを備えたインライン型カラー受像管の電子銃
近傍に少なくとも1組設けられ、垂直偏向周期と同期し
た鋸歯状波形の電流が流され、その電流により発生する
磁界で、垂直偏向に共ない生ずるコンバーゼンスずれを
補正する。
Operation: At least one set of the first coma error correction coils is provided near the electron gun of an in-line color picture tube equipped with a self-convergence type deflection yoke, and a current having a sawtooth waveform synchronized with the vertical deflection period is passed therethrough. The generated magnetic field corrects the convergence shift that occurs with vertical deflection.

第2のコマエラー補正コイルは第1のコマエラー補正コ
イル同様に電子銃近傍に少なくとも1組設けられ、垂直
偏向周期に同期した鋸歯状波形以外の波形の電流により
駆動され、第1のコマエラー補正コイルとは逆極性の磁
界を発生させ、第1−のコマエラー補正コイルによる補
正オーバーに伴うコンバーゼンスずれを補正する。  
    。
Like the first coma error correction coil, at least one set of the second coma error correction coil is provided near the electron gun, and is driven by a current having a waveform other than the sawtooth waveform synchronized with the vertical deflection period. generates a magnetic field of opposite polarity to correct a convergence shift caused by over-correction by the first coma error correction coil.
.

実施例 第1図は本発明の一実施例の概略図を示す。図中、1.
2はコア、3a、3b、、4a、4bはコイルを示す。
Embodiment FIG. 1 shows a schematic diagram of an embodiment of the present invention. In the figure, 1.
2 represents a core, and 3a, 3b, 4a, 4b represent coils.

コア1にはコイル3a、4aが巻回されていて、コイル
3aは実線矢印5aのような磁力線を有する磁界を、コ
イル4aは破線矢印6aのような磁力線を有する磁界を
発生させる。また、コア2にはコイル3b、4bが巻回
されていて、コイル3bは実線矢印5bのような磁力線
を有する磁界を、コイル4bは破線矢印6bのような磁
力線を有する磁界を発生させる。コア1.2をテレビ受
像管の電子銃近傍に配し、6極磁界を形成させる。
Coils 3a and 4a are wound around the core 1, and the coil 3a generates a magnetic field having lines of magnetic force as shown by a solid arrow 5a, and the coil 4a generates a magnetic field having lines of magnetic force as shown by a broken arrow 6a. Further, coils 3b and 4b are wound around the core 2, and the coil 3b generates a magnetic field having lines of magnetic force as shown by a solid arrow 5b, and the coil 4b generates a magnetic field having lines of magnetic force as shown by a broken arrow 6b. The core 1.2 is placed near the electron gun of a television picture tube to form a hexapole magnetic field.

コイル3a、3b、4a、4bは第2図に示すように配
線されている。図中、7.8は垂直偏向コイルを示す。
The coils 3a, 3b, 4a, 4b are wired as shown in FIG. In the figure, 7.8 indicates a vertical deflection coil.

端子9,10間には鋸歯状波形の電流を流す。このため
、コイル4a、4bにより発生する磁束は第4図(A)
に示すようなものとなる。また、コイル3a、3bの両
端には並列に少なくとも一対の互いに逆極性に接続され
たダイオードD+ 、02か、または、直列に少なくと
も一対の互いに逆極性に接続されたツェナーダイオード
D3 、D4が並列に接続されている。
A sawtooth waveform current is passed between terminals 9 and 10. Therefore, the magnetic flux generated by the coils 4a and 4b is as shown in Fig. 4(A).
It will look like the one shown below. Further, at both ends of the coils 3a and 3b, at least one pair of diodes D+, 02 connected in parallel with opposite polarities, or at least a pair of Zener diodes D3, D4 connected in series with opposite polarities, are connected in parallel. It is connected.

このとき、ダイオードD+ 、D2又はツェナーダイオ
ードD3 、D4のターンオン電圧を電子ビームが垂直
偏向方向の略中間部まで偏向されたとぎにコイル3a、
3bの両端の電圧と一致するように設定する。
At this time, the turn-on voltage of the diodes D+, D2 or the Zener diodes D3, D4 is changed to the coil 3a when the electron beam is deflected to approximately the middle part in the vertical deflection direction.
Set to match the voltage across 3b.

また、コイル3a、3bはコマエラーを増大させるよう
な磁界を発生させるような極性で電流が流れ、コイル4
a、4bはコマエラーを減少させるような極性で電流が
流れるよう配線されている。
In addition, current flows through the coils 3a and 3b with a polarity that generates a magnetic field that increases the coma error, and the coil 4
A and 4b are wired so that current flows with polarity that reduces coma errors.

このため、コイル3a、3bは第4図(B)に示すよう
な磁束が発生し、コイル3a、3b、4a。
Therefore, magnetic flux as shown in FIG. 4(B) is generated in the coils 3a, 3b, and the coils 3a, 3b, 4a.

4bにより、第4図(C)に示すような磁束が発生する
ことになる。
4b, a magnetic flux as shown in FIG. 4(C) is generated.

本実施例で、画面上下辺でコマエラー補正が最適となる
補設定した場合の垂直偏向距離に対するコマエラー補正
量の変化を第5図(A)に実線21で示す。また、第5
図(A)の破線20は、画面上下辺でコマエラー補正が
最適となる様に設定した鋸歯状波電流による垂直偏向距
離に対するコマエラー補正量の変化を示す。
In this embodiment, the change in the amount of coma error correction with respect to the vertical deflection distance is shown by a solid line 21 in FIG. 5(A) when the coma error correction is set optimally on the upper and lower sides of the screen. Also, the fifth
A broken line 20 in FIG. 2A shows a change in the amount of coma error correction with respect to the vertical deflection distance by the sawtooth wave current, which is set so that the coma error correction is optimal at the upper and lower sides of the screen.

次に本実施例におけるコマエラー補正量の従来の鋸歯状
波電流によるコマエラー補正aに対しての変化分を第5
図(B)に示す。
Next, the amount of change in the coma error correction amount in this embodiment with respect to the coma error correction a using the conventional sawtooth wave current is calculated as the fifth
Shown in Figure (B).

従来の鋸歯状波電流だけによるコマエラーの補正では第
10図に示すように画面中間部26付近でコマエラー補
正がオーバーしている。ところが、本実施例による補正
では従来の鋸歯状波電流によるコマエラー補正に比べ、
第5図(B)に示すように画面中間部26で補正量がア
ンダーとなっている。
In the conventional coma error correction using only the sawtooth wave current, the coma error correction exceeds the area near the middle part 26 of the screen, as shown in FIG. However, in the correction according to this embodiment, compared to the conventional coma error correction using sawtooth wave current,
As shown in FIG. 5(B), the amount of correction is undersized in the middle part 26 of the screen.

したがって、第10図に示すようなコマエラー補正オー
バーをキャンセルすることができるため、ミスコンバー
ゼンスパターンを良好に補正することができる。
Therefore, over-correction of the coma error as shown in FIG. 10 can be canceled, so that misconvergence patterns can be favorably corrected.

第3図は他の実施例の概略図を示す。第3図に示すよう
に、コア13にコイル14aを巻回し、コア12にコイ
ル14bを巻回し、垂直偏向周期と同期した鋸歯状波形
の電流により例えば矢印15a、15bに示すような磁
力線を有する磁界を発生させ、画面上下辺でのコンバー
ゼンスずれを補正する構成とし、コア17にコイル18
aをコア16にコイル18bを巻回し、コイル14a。
FIG. 3 shows a schematic diagram of another embodiment. As shown in FIG. 3, a coil 14a is wound around the core 13, and a coil 14b is wound around the core 12, and a sawtooth waveform current synchronized with the vertical deflection period creates lines of magnetic force as shown, for example, by arrows 15a and 15b. The configuration is such that a magnetic field is generated to correct the convergence shift at the top and bottom sides of the screen, and a coil 18 is installed in the core 17.
A coil 18b is wound around the core 16, and the coil 14a is formed.

14bによる磁界とは逆極性の矢印19a、19bに示
すような磁力線を有する磁界を発生させることにより、
第1図示のものと同様に有効にコマエラーを補正するこ
とが可能である。
By generating a magnetic field having lines of magnetic force as shown by arrows 19a and 19b of opposite polarity to the magnetic field generated by 14b,
It is possible to effectively correct the coma error in the same way as the one shown in FIG.

なお、上記2つの実施例では6極コイルによるコマエラ
ー補正装置について説明したが、第8図(B)に示すよ
うな4極コイルによるものや、第7図に示すような磁性
片を使用した場合でもミスコンバーゼンスパターンを有
効に補正することができる。
In the above two embodiments, a coma error correction device using a 6-pole coil was explained, but a device using a 4-pole coil as shown in FIG. 8(B) or a magnetic piece as shown in FIG. 7 may be used. However, misconvergence patterns can be effectively corrected.

また、本実施例の補正装置は複雑な補正波形を得る必要
がなく、そのための電気回路が必要ないため、安価に最
適なコマエラー補正ができる。
Further, since the correction device of this embodiment does not need to obtain a complicated correction waveform and does not require an electric circuit for this purpose, optimal coma error correction can be performed at low cost.

さらに、上記2つの実施例では第1のコマエラー補正コ
イル及び第2のコマエラー補正コイルを各々1組ずつ設
けたものについて説明したが各々複数Ill設けて補正
することも可能である。
Furthermore, although the above two embodiments have been described in which one set each of the first coma error correction coil and the second coma error correction coil are provided, it is also possible to provide a plurality of each of them for correction.

発明の効果 上述の如く、本発明によれば、少なくとも2組のコマエ
ラー補正コイルを設け、一方の補正コイルにより生じる
補正オーバー分を他の補正コイルによりキャンセルする
ことにより、画面全体にわたりR適なコマエラー補正を
行なうことができ、テレビ受像管の画面品位を向上させ
ることができる等の特長を有する。
Effects of the Invention As described above, according to the present invention, at least two sets of frame error correction coils are provided, and the over-correction caused by one correction coil is canceled by the other correction coil. It has the advantage of being able to perform corrections and improving the screen quality of television picture tubes.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例の概略図、第2図は本発明の
一実施例の結線図、第3図は本発明の他の実施例を説明
するための図、第4図は本発明の一実施例の補正装置に
より得られる補正磁束波形図、第5図は本発明の一実施
例の垂直偏向距離に対するコマエラー補正量オーバー量
を示す図、第6図はコマ収差によるコンバーゼンスずれ
パターンを示す図、第7図、第8図はコンバーゼンス補
正v装置の一例を示す図、第9図は鋸歯状波電流のみの
補正により生ずるコンバーゼンスずれパターンを示す図
、第10図は鋸歯状波電流のみの補正によるコマニラー
補正オーバー憬を示す図である。 1.2=−17,3a 、 3 b ・mlイ/L/、
4a。 4b・・・コイル、6a、6b・・・磁力線、7・・・
垂直偏向コイル、8・・・垂直偏向コイル、D+ 、D
2・・・ダイオード、D3 、D4・・・ツェナダイオ
ード。 第1図 第4図 第2図 第3図 第5図 第6図 第7図 −22b 第8図 (A)      (B)
Fig. 1 is a schematic diagram of an embodiment of the present invention, Fig. 2 is a wiring diagram of an embodiment of the invention, Fig. 3 is a diagram for explaining another embodiment of the invention, and Fig. 4 is a diagram for explaining another embodiment of the invention. A corrected magnetic flux waveform diagram obtained by a correction device according to an embodiment of the present invention, FIG. 5 is a diagram showing an over amount of coma error correction with respect to a vertical deflection distance according to an embodiment of the present invention, and FIG. 6 is a diagram showing convergence deviation due to coma aberration. Figures 7 and 8 are diagrams showing an example of a convergence correction v device, Figure 9 is a diagram showing a convergence shift pattern caused by correction of only a sawtooth wave current, and Figure 10 is a diagram showing a convergence shift pattern caused by correction of only a sawtooth wave current. FIG. 7 is a diagram illustrating over-correction of the common error due to correction of only current. 1.2=-17,3a, 3b・ml/L/,
4a. 4b... Coil, 6a, 6b... Lines of magnetic force, 7...
Vertical deflection coil, 8... Vertical deflection coil, D+, D
2...Diode, D3, D4... Zener diode. Figure 1 Figure 4 Figure 2 Figure 3 Figure 5 Figure 6 Figure 7-22b Figure 8 (A) (B)

Claims (1)

【特許請求の範囲】 セルフコンバーゼンス型偏向ヨークを備えたインライン
型のカラー受像管の電子銃近傍に少なくとも1組設けら
れ、垂直偏向周期と同期した鋸歯状波形の電流により、
垂直偏向により生ずるコンバーゼンスずれを補正する第
1のコマエラー補正コイルと、 該電子銃近傍に少なくとも1組設けられ、垂直偏向周期
と周期した該鋸歯状波形以外の波形の電流により駆動さ
れ、該第1のコマエラー補正コイルによる補正オーバー
に伴うコンバーゼンスずれを補正する第2のコマエラー
補正コイルとよりなることを特徴とするコンバーゼンス
補正装置。
[Claims] At least one set is provided near the electron gun of an in-line color picture tube equipped with a self-convergence type deflection yoke, and a current having a sawtooth waveform synchronized with the vertical deflection period,
a first coma error correction coil for correcting a convergence shift caused by vertical deflection; A convergence correction device comprising: a second coma error correction coil for correcting a convergence shift due to over-correction by the coma error correction coil.
JP31572587A 1987-12-14 1987-12-14 Conversence correcting device Granted JPH01157187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31572587A JPH01157187A (en) 1987-12-14 1987-12-14 Conversence correcting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31572587A JPH01157187A (en) 1987-12-14 1987-12-14 Conversence correcting device

Publications (2)

Publication Number Publication Date
JPH01157187A true JPH01157187A (en) 1989-06-20
JPH0588036B2 JPH0588036B2 (en) 1993-12-20

Family

ID=18068780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31572587A Granted JPH01157187A (en) 1987-12-14 1987-12-14 Conversence correcting device

Country Status (1)

Country Link
JP (1) JPH01157187A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0563182U (en) * 1991-07-02 1993-08-20 三星電管株式會社 Dynamic convergence correction device
KR100405210B1 (en) * 2001-06-27 2003-11-12 삼성전기주식회사 Apparatus for correction of deflection yoke

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0563182U (en) * 1991-07-02 1993-08-20 三星電管株式會社 Dynamic convergence correction device
KR100405210B1 (en) * 2001-06-27 2003-11-12 삼성전기주식회사 Apparatus for correction of deflection yoke

Also Published As

Publication number Publication date
JPH0588036B2 (en) 1993-12-20

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