JPH03102744A - Deflecting yoke device - Google Patents
Deflecting yoke deviceInfo
- Publication number
- JPH03102744A JPH03102744A JP24133889A JP24133889A JPH03102744A JP H03102744 A JPH03102744 A JP H03102744A JP 24133889 A JP24133889 A JP 24133889A JP 24133889 A JP24133889 A JP 24133889A JP H03102744 A JPH03102744 A JP H03102744A
- Authority
- JP
- Japan
- Prior art keywords
- correction
- correcting
- current
- coil
- coils
- 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
Links
- 206010010071 Coma Diseases 0.000 abstract description 17
- 230000002146 bilateral effect Effects 0.000 abstract 1
- 230000004075 alteration Effects 0.000 description 19
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 206010073261 Ovarian theca cell tumour Diseases 0.000 description 4
- 208000001644 thecoma Diseases 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 230000002301 combined effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
この発明は、インライン配列の3つの電子銃を有する陰
極線管(以下、CRTと称す)に装着して使用される偏
向ヨーク装置に関するもので、とくに、コンバーゼンス
の補正装置に関するものである.
[従来の技術】
インライン配列の3つの電子銃を有するCRTに使用さ
れる偏向ヨーク装置においては、一般にピン磁界威分を
もつ水平偏向コイルとバレル磁界成分をもつ垂直偏向コ
イルとにより構威された偏向ヨークが用いられる.
この場合、バレル型の重直偏向磁界に起因して、両サイ
ドビームとセンタービームのミスコンバーゼンスにより
、第9図に示すように、画而(F)上の」一下部にラス
クのコマ収差(Q)が発生し、なんらかの補正手段を必
要とする.また、両サイドビーム間では,たとえば,画
面(F)をl/4に等分した第IQ現に平均して現わす
と、第8図に示すように、一面(F)のヒ部、コーナ一
部および左右部に,Yh.PQv.Xhで示す量のミス
コンバーゼンスパターンが発生する。これらくスコンパ
ーゼンスYh% PQv,xhの和、つまり、Yh +
PQv +Xhの値を通常トリレンマと称する.
このトリレンマは偏向ヨークの構造により一義的に決定
されるものであり、多くの場合、完全に零にならず、ト
リレンマ残りを生じ、種々のミスコンバーゼンスが発生
する。したがって、ミスコンバーゼンスの成分であるト
リレンマの補正手段をも必要とする。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a deflection yoke device used by being attached to a cathode ray tube (hereinafter referred to as CRT) having three electron guns arranged in-line. In particular, it concerns convergence correction devices. [Prior Art] A deflection yoke device used in a CRT having three electron guns arranged in-line generally consists of a horizontal deflection coil with a pin magnetic field component and a vertical deflection coil with a barrel magnetic field component. A deflection yoke is used. In this case, due to the barrel-shaped vertical deflection magnetic field, the misconvergence of both side beams and the center beam causes Rask's coma aberration ( Q) occurs, and some kind of correction method is required. In addition, between both side beams, for example, if the screen (F) is divided into 1/4 and averaged over the IQ plane, as shown in Figure 8, Yh. PQv. A misconvergence pattern of an amount indicated by Xh occurs. The sum of these sums, Yh% PQv, xh, that is, Yh +
The value of PQv +Xh is usually called the trilemma. This trilemma is uniquely determined by the structure of the deflection yoke, and in many cases does not become completely zero, leaving a trilemma behind and causing various misconvergence. Therefore, a means for correcting the trilemma, which is a component of misconvergence, is also required.
従来、上述のようなコマ収差の補正とトリレンマの補正
とを同時におこなえるコンバーゼンス補正装置が特開昭
81−253750号公報に開示されている。Conventionally, a convergence correction device capable of simultaneously correcting comatic aberration and trilemma as described above is disclosed in Japanese Patent Application Laid-Open No. 81-253750.
上記公報に開示された従来のコンバーゼンス補正装置は
、第12図で示すように、コア(1)に垂直偏向コイル
(5)を巻回させてなる偏向ヨーク(l5)の後方で、
CRTネック部(2)の両側に、第13図に示すように
、左右一対のE字形磁性体(t1) , <12)を設
け、これら各E字形磁性体(11),(12)の水平方
向に対向する中間部と両端部にそれぞれ補正コイル(3
7) , (38)を巻回し、これら補正コイル(37
) . (38)に垂直偏向電流を流して、中間部巻線
によりネック部(2)内に主垂直偏向磁界の向きと逆向
きのバレル形の磁界(39)を、また両端部巻線により
上記主垂U!偏向磁界の向きと同じ向きのピンクッショ
ン形の磁界(40)を発生させるように構成したもので
ある。As shown in FIG. 12, the conventional convergence correction device disclosed in the above publication includes a core (1) with a vertical deflection coil (5) wound at the rear of a deflection yoke (15).
As shown in FIG. 13, a pair of left and right E-shaped magnetic bodies (t1), <12) are provided on both sides of the CRT neck part (2), and the horizontal Correction coils (3
7) and (38), and these correction coils (37
). (38), a barrel-shaped magnetic field (39) in the direction opposite to that of the main vertical deflection field is created in the neck part (2) by the middle winding, and the main vertical deflection field (39) is created by the windings at both ends. Taru U! It is configured to generate a pincushion-shaped magnetic field (40) in the same direction as the deflection magnetic field.
つぎ社、上記構成の動作について説明する。Next, the operation of the above configuration will be explained.
上記補正コイル(37) . (38)に垂直偏向電流
を流したとき、中間部巻線により発生されるバレル形の
磁界(39)および両端部巻線により発生されるピンク
ッション形の磁界(40)はともにセンタービーム(G
)とサイドビーム(B) . (R)の垂直方向成分の
偏向力に差を有するために、コマ収差が補正され、また
、上記両磁界(39) , (40)の比率を任意に調
節することによりトリレンマを補正する.つまり、両磁
界(39) . (40)の合成による作用が、各ビー
ム(B) . (G) . (R)を垂直偏向方向と同
じ方向に偏向させる場合に、トリレンマは正方向に補正
され、また、その逆の場合にトリレンマは負方向に補正
される。The above correction coil (37). When a vertical deflection current is applied to the center beam (G
) and side beam (B). Since there is a difference in the deflection force of the vertical component of (R), coma aberration is corrected, and the trilemma is corrected by arbitrarily adjusting the ratio of the two magnetic fields (39) and (40). In other words, both magnetic fields (39). The combined effect of (40) is for each beam (B) . (G). When (R) is deflected in the same direction as the vertical deflection direction, the trilemma is corrected in the positive direction, and vice versa, the trilemma is corrected in the negative direction.
[発明が解決しようとする課題]
従来の偏向ヨーク装置は以上のように構成されているの
で、コマ収差の補正とトリレンマの補正とをおこなえる
けれども、その場合、コマ収差の補正量とトリレンマの
補正量を任意に設定するに際して、補正コイルの巻回数
および磁性体形状の煩雑な調節を必要とし、また、その
トリレンマの補正の原理からみて、トリレンマ補正時に
トリレンマ補正量と相関関係を有する画面上下部のラス
ク歪に変化をともなうなどの問題があった。[Problems to be Solved by the Invention] Since the conventional deflection yoke device is configured as described above, it is possible to correct comatic aberration and trilemma. When setting the amount arbitrarily, it is necessary to make complicated adjustments to the number of windings of the correction coil and the shape of the magnetic body, and from the viewpoint of the principle of trilemma correction, the upper and lower parts of the screen that have a correlation with the trilemma correction amount during trilemma correction. There were problems such as changes in the rask distortion.
また、実際のコマ収差は、第lO図に示すような非線形
状の場合が多く、補正コイルに垂直偏向鋸歯状波電流を
流すため、上記補正装置では、コマ収差の補正時に、垂
直方向中間部に過補正を生じるなどの問題があった。In addition, actual coma aberration often has a nonlinear shape as shown in Figure 1O, and since a vertically polarized sawtooth wave current is passed through the correction coil, in the above correction device, when correcting coma aberration, the vertical intermediate portion is There were problems such as over-correction.
この発明は上記のような問題点を解消するためになされ
たもので、上下ラスク歪の変化をともなうことなく、非
線形状のコマ収差の補正と、主スコンパーゼンスの成分
であるトリレンマの補正とを同時に達成することができ
る偏向ヨーク装置を提供することを目的とする。This invention was made to solve the above-mentioned problems, and it is possible to simultaneously correct nonlinear coma aberration and trilemma, which is a component of principal scomparance, without changing vertical rask distortion. It is an object of the present invention to provide a deflection yoke device that can achieve the above objectives.
[課題を解決するための手段]
この発明に係る偏向ヨーク装置は、偏向ヨークの後方部
に、インライン配列の水平軸上にそれぞれ極をもつ左右
一対の中央部補正コイルと、上記水平軸の上方対角部位
にそれぞれ極をもつ上辺部補正コイルと、上記水平軸の
下方対角部位にそれぞれ極をもつ下辺部補正コイルとか
らなる補正コイル装置を配設し、上記中央部補正コイル
には垂直偏向鋸歯状波の補正電流を、また上記上辺部補
正コイルおよび下辺部補正コイルには、それぞれ垂直偏
向電流を半波整流しパラボラ状に成形した補正電流を供
給するように構成したことを特徴とする。[Means for Solving the Problems] A deflection yoke device according to the present invention includes a pair of left and right center correction coils each having a pole on a horizontal axis in an in-line arrangement at a rear portion of a deflection yoke; A correction coil device consisting of an upper side correction coil having a pole at each diagonal position and a lower side correction coil having a pole at a diagonal position below the horizontal axis is provided, and the center correction coil is vertically connected to the center correction coil. The present invention is characterized in that it is configured to supply a correction current of a deflection sawtooth wave, and a correction current obtained by rectifying a vertical deflection current into a parabolic shape by half-wave rectification to the upper side correction coil and the lower side correction coil, respectively. do.
[作用]
この発明によれば、袖正コイル装置の各部コイルにそれ
ぞれ所定の補正電流を供給することによって、中央部補
正コイルの発生する磁界によりコマ収差を線形状に補正
し、また、上辺N5?Ii正コイルの発生する磁界およ
び下辺部補正コイルの発生する磁界により、コマ収差を
非線形状に補正するとともに、画面上部のミスコンバー
ゼン又も非線形状に袖正する.したがって、両磁界の合
成として、上下ラスク歪をほとんど変化させることなく
、コマ収差とくスコンバーゼンスの成分であるトリレン
マとを補正することができる。[Operation] According to the present invention, by supplying a predetermined correction current to each coil of the sleeve correction coil device, coma aberration is linearly corrected by the magnetic field generated by the center correction coil, and the upper side N5 ? By the magnetic field generated by the Ii positive coil and the magnetic field generated by the lower side correction coil, coma aberration is corrected into a non-linear form, and misconvergence at the top of the screen is also corrected into a non-linear form. Therefore, by combining both magnetic fields, it is possible to correct coma aberration and the trilemma, which is a component of convergence, without substantially changing the upper and lower Rask distortions.
[発明の実施例]
以下、この発明の一実施例を図面にもとづいて説明する
.
第1図はこの発明の一実施例による偏向ヨーク装置にお
ける補正コイル装置の構成を示す正面図であり、同図に
おいて、(11) . (12)は左右一対のE字形磁
性体で、CRTネック部(2)の両側に配置されている
。(31) . (32)は左右一対の中央部補正コイ
ルで、インライン配列の水平軸(h)上にそれぞれ極を
有している.
(33) . (34)は上辺部補正コイルで、上記水
平軸(h)の上方対角部にそれぞれ極を有している.(
35) . (38)は下辺部補正コイルで、上記水平
軸(h)の下方対角部にそれぞれ極を有している.以上
の中央部補正コイル(31) , (32) 上辺部
補正コイル(33) . (34)および下辺部補正コ
イル(35) . (36)により補正コイル装置が構
成されている.
第2図は上記偏向ヨーク装置における補正コイル装置の
結線状態を示す回路図であり、同図において、(4)は
垂直偏向回路で、垂直偏向コイル(5)が直列状に接続
されており、この垂直偏向コイル(5)に上記左右一対
の中央部補正コイル(31) . (32)が直列に接
続されている。(6l)は可変抵抗で、上記中央部補正
コイル(31) . (32)に流れる電流を差動調整
するように接続されている。[Embodiment of the Invention] An embodiment of the invention will be described below based on the drawings. FIG. 1 is a front view showing the configuration of a correction coil device in a deflection yoke device according to an embodiment of the present invention. (12) are a pair of left and right E-shaped magnetic bodies, which are arranged on both sides of the CRT neck part (2). (31). (32) is a pair of left and right center correction coils, each having a pole on the horizontal axis (h) of the inline arrangement. (33). Reference numeral (34) denotes an upper side correction coil, each having a pole at an upper diagonal of the horizontal axis (h). (
35). (38) is a lower side correction coil, each having a pole at a lower diagonal portion of the horizontal axis (h). The above center correction coils (31), (32) and upper side correction coils (33). (34) and lower side correction coil (35). (36) constitutes a correction coil device. FIG. 2 is a circuit diagram showing the connection state of the correction coil device in the deflection yoke device. In the figure, (4) is a vertical deflection circuit, and vertical deflection coils (5) are connected in series. This vertical deflection coil (5) is connected to the pair of left and right center correction coils (31). (32) are connected in series. (6l) is a variable resistor, which is connected to the center correction coil (31). (32) are connected so as to differentially adjust the current flowing through them.
上記上辺部補正コイル(33)と(34)および下辺部
補正コイル(35)と(36)はそれぞれ直列に接続さ
れているとともに、互いに並列状態で上記垂直偏向コイ
ル(5)に接続されており、上辺部補正コイル(33)
. (34)に可変抵抗(63)と2個のダイオード
(D3) . (D4)が直列状に接続され、また下辺
郎補正コイル(35) . (3B)に可変抵抗(62
)と2個のダイオード(o1) . (o2)が直列状
に接続されている.(71) . (72)はそれぞれ
抵抗で、抵抗(71)には垂直偏向電流が通電され、か
つ抵抗(72)には下辺部補正コイル電流が通電される
ように接続されている。The upper side correction coils (33) and (34) and the lower side correction coils (35) and (36) are connected in series, and are also connected in parallel to the vertical deflection coil (5). , upper side correction coil (33)
.. (34) is a variable resistor (63) and two diodes (D3). (D4) are connected in series, and the Shimobero correction coil (35). (3B) is a variable resistor (62
) and two diodes (o1). (o2) are connected in series. (71). (72) are resistors, and the resistor (71) is connected to be energized with a vertical deflection current, and the resistor (72) is connected so that a lower side correction coil current is energized.
つぎに、上記構成の動作について、第3図の電流波形図
を参照しながら説明する。Next, the operation of the above configuration will be explained with reference to the current waveform diagram in FIG.
垂直偏向回路(4)より垂直偏向コイル(5)に、第3
図(a)で示すような垂直偏向電流Ivが流れると、上
記垂直偏向コイル(5)に直列に接続された中央部補正
コイル(31) , (32)には、第3図(b)で示
すような鋸歯状波電流1cが流れる。このとき、可変抵
抗(6l)により上記中央部補正コイル(31) ,
(32)に流れる電流を差勤調整し、さらに、垂直偏向
電流1vは抵抗(7l)に通電される。From the vertical deflection circuit (4) to the vertical deflection coil (5), the third
When a vertical deflection current Iv as shown in Fig. 3(a) flows, the central correction coils (31) and (32) connected in series with the vertical deflection coil (5) have the following effects as shown in Fig. 3(b). A sawtooth wave current 1c as shown flows. At this time, the center correction coil (31),
(32) is differentially adjusted, and furthermore, a vertical deflection current 1v is applied to the resistor (7l).
いま、垂直偏向電流1vが正の場合、ダイオード(D3
)により上辺部補正コイル(33) , (34)に補
正電流Isは流れない。抵抗(7l)の抵抗値をRlと
すると、IvXR1の値がダイオード(DI)の順方向
電圧より大きくなれば、ダイオード(D1)が導通し、
ダイオード(Ol)一下辺部補正コイル(35),(3
6)→可変抵抗(82}→抵抗C72)の経路を経て下
辺部補正コイル電流Isが流れる.
ここで、抵抗(72)にダイオード(D2) . (D
4)が接続されているため、抵抗(72)の抵抗値をR
2とすると、IsXR2の値がダイオード(D2)の順
方向電圧より大きくなれば、ダイオード(D2)が導通
する。Now, if the vertical deflection current 1v is positive, the diode (D3
), the correction current Is does not flow through the upper side correction coils (33) and (34). If the resistance value of the resistor (7l) is Rl, if the value of IvXR1 becomes larger than the forward voltage of the diode (DI), the diode (D1) becomes conductive.
Diode (Ol) lower side correction coil (35), (3
6) The lower side correction coil current Is flows through the path of → variable resistor (82} → resistor C72). Here, a diode (D2) is connected to the resistor (72). (D
4) is connected, the resistance value of resistor (72) is R
2, when the value of IsXR2 becomes larger than the forward voltage of the diode (D2), the diode (D2) becomes conductive.
以上のようにして、下辺部補正コイル電流l.sは、第
3図(C)に示すようなパラボラ状に成形される.なお
、第3図(c)中のtl ,t2はダイオード(of)
. (D2)が導通した時間を示す.また、垂直偏向電
流Ivが負の場合も、上記と同様にして、上辺部補正コ
イル電流Isが第3図(d)に示すようなパラボラ状に
成形される。As described above, the lower side correction coil current l. s is formed into a parabolic shape as shown in Figure 3(C). Note that tl and t2 in Fig. 3(c) are diodes (of).
.. (D2) indicates the time when conduction occurred. Also, when the vertical deflection current Iv is negative, the upper side correction coil current Is is shaped into a parabolic shape as shown in FIG. 3(d) in the same manner as described above.
第3図(d)に示すt3 .t4はダイオード(D3)
,(04)が導通した時間を示す。また、可変抵抗(8
2) . (63)によって、それぞれ上記補正コイル
電流Is,Iwを任意に調整することができる。t3. shown in FIG. 3(d). t4 is a diode (D3)
, (04) indicates the time when conduction occurs. In addition, a variable resistor (8
2). (63) allows each of the correction coil currents Is and Iw to be adjusted arbitrarily.
第9図は上記偏向ヨーク装置によって補正されル前ノミ
スコンバーゼンスバターンの一例を示し、同図中に示し
たコマ収差QおよびミスコンバーゼンスYhは,一般的
に垂直方向の画面中心0からの距離に対して、第10図
および第11図に示すような非線形状の特性をもってい
る.つぎに、上記構成の偏向ヨーク装置により、第9図
で示すような非線形状のコマ収差Qおよびミスコンバー
ゼンスYhを補正する動作原理について説明する.
まず、画面のと方向に偏向されている場合について説明
する.
画面の上方向に偏向されているとき、中央部補正コイル
(31).(32)は第4図中のF1で示す向きの磁界
を発生するように設定される.これによって、B,G,
Hの3ビームともに矢印時で示したように、垂直偏向と
逆向きの偏向力fb,fgfrを受ける.その偏向力は
センタービームGの偏向力fgに比較して両サイドビー
ムB,Hの偏向力fb,frの方が強く、これにより、
コマ収差Qを補正する.このときのコマ収差Qの補正量
は、Φ央部補正コイル(31),(32)に流れる第3
図(b)に示すような鋸歯状波電流Icである.また、
下辺部補正コイル(35) . (3B)は第5図中の
F2で示す向きの磁界を発生するように設定される.こ
れによって、センタービームGは垂直偏向と同向きの偏
向力fglを受け、両サイドビームB,Rはそれぞれ水
平成分をもった偏向力f bl ,frlを受ける.し
たがって、コマ収差Qは補正され,かつミスコンバーゼ
ンスYhも補正される.その補正量は、第3図(c)に
示すような下辺部補正コイル電fli I sにより画
面の上端部にいくにしたがいパラボラ状に増加する.
また、このとき、L辺部補正コイル(33),(34)
には電流は流れない.つまり、画面の上半分のコマ収差
QおよびミスコンバーゼンスYhが中央部補正コイル(
31).(32)と下辺部補正コイル(35) ,(3
6)のみによって補正される.
画面の下方向に偏向されているときは、上記の上方向の
偏向のときと逆に下辺部補正コイル(35) , (3
B)が不導通となり,中央部補正コイル(31) .(
32)と上辺部補正コイル(33).(34)とによっ
て上記と同様な動作MJ!!により補正される.以上の
ような動作の結果として、第6図に示すようなコマ収差
の補正特性および第7図に示すようなyh補正特性が得
られ、おのおの第10図および第11図の特性と一致し
,画面の全域に亘り良好なコンバーゼンス特性を得るこ
とができる.なお,第6図および第7図中のAは中央部
補正コイル(31),(32)により発生される磁界に
よる補正効果領域、Bは下辺部補正コイル(35).(
3B)により発生される磁界による補正効果領域、Cは
上辺部補正コイル(33) .(34)により発生され
る磁界による補正効果領域である.
また、上記の動作原理から明らかなように、可変抵抗(
82) . (83)によって,画tt’ih半分と下
半分のミスコンバーゼンスを独立にW!L補正すること
ができる.
なお、上記実施例では,補正コイル?t置を左右一対の
E字形磁性体(11).(12)と6個の補正コイル(
3l)〜(36)とによりa成したが、中央部と上辺部
と下辺部の3つの要素に分離できる補正コイルを備えた
構成としても,上記実施例と同様の効果を奏する.
[発明の効果]
以上のように、この発明によれば、単一の偏向ヨーク装
置をもってコマ収差の補正とミスコンバーゼンスの成分
であるトリレンマの補正との2つの機能を発揮させるこ
とができ、偏向ヨークの設計を容易にすることができる
.また、コマ収差もミスコンバーゼンスも非線形状に補
正することができるので、上下ラスク歪の変化をともな
わず、したがって,画面の全域にわたり高品位のコンバ
ーゼンス特性を得ることができる.Figure 9 shows an example of the front misconvergence pattern corrected by the deflection yoke device, and the coma Q and misconvergence Yh shown in the figure generally vary with the distance from the screen center 0 in the vertical direction. On the other hand, it has nonlinear characteristics as shown in Figures 10 and 11. Next, the operating principle for correcting nonlinear coma aberration Q and misconvergence Yh as shown in FIG. 9 using the deflection yoke device having the above configuration will be explained. First, we will explain the case where the image is deflected in the direction of the screen. When the screen is deflected upward, the center correction coil (31). (32) is set to generate a magnetic field in the direction indicated by F1 in Figure 4. By this, B, G,
All three beams of H receive deflection forces fb and fgfr in the opposite direction to the vertical deflection, as shown by the arrows. The deflection forces fb and fr of both side beams B and H are stronger than the deflection force fg of the center beam G, and as a result,
Correct coma aberration Q. The amount of correction of coma aberration Q at this time is the third
This is a sawtooth wave current Ic as shown in Figure (b). Also,
Lower side correction coil (35). (3B) is set to generate a magnetic field in the direction indicated by F2 in Figure 5. As a result, the center beam G receives a deflection force fgl in the same direction as the vertical deflection, and both side beams B and R receive deflection forces f bl and frl each having a horizontal component. Therefore, coma aberration Q is corrected, and misconvergence Yh is also corrected. The amount of correction increases in a parabolic manner toward the upper end of the screen due to the lower side correction coil electric fli Is as shown in FIG. 3(c). Also, at this time, the L side correction coils (33), (34)
No current flows through. In other words, the coma Q and misconvergence Yh in the upper half of the screen are reduced by the center correction coil (
31). (32) and the lower side correction coil (35), (3
6) is corrected only by When the screen is deflected downward, the lower side correction coils (35) and (3
B) becomes non-conductive, and the center correction coil (31). (
32) and the upper side correction coil (33). (34) The same operation as above is performed with MJ! ! Corrected by As a result of the above operations, the coma aberration correction characteristics shown in FIG. 6 and the yh correction characteristics shown in FIG. 7 are obtained, which match the characteristics shown in FIGS. 10 and 11, respectively. Good convergence characteristics can be obtained across the entire screen. In FIGS. 6 and 7, A indicates the correction effect area due to the magnetic field generated by the center correction coils (31) and (32), and B indicates the lower side correction coil (35). (
3B), C is the correction effect area due to the magnetic field generated by the upper side correction coil (33). This is the correction effect area due to the magnetic field generated by (34). Also, as is clear from the above operating principle, a variable resistor (
82). By (83), the misconvergence of the half and lower half of the picture is independently W! L can be corrected. In addition, in the above embodiment, the correction coil? The t position is a pair of left and right E-shaped magnetic bodies (11). (12) and six correction coils (
3l) to (36) have been achieved, but the same effect as in the above embodiment can be obtained even if the correction coil is provided with a correction coil that can be separated into three elements: the center portion, the upper side portion, and the lower side portion. [Effects of the Invention] As described above, according to the present invention, a single deflection yoke device can perform the two functions of correcting coma aberration and correcting trilemma, which is a component of misconvergence. This makes it easier to design the yoke. Furthermore, since both coma aberration and misconvergence can be corrected nonlinearly, there is no change in vertical rask distortion, and therefore high-quality convergence characteristics can be obtained over the entire screen.
第1図はこの発明の一実施例による偏向ヨーク装置にお
ける補正コイル装nの構成を示す正面図,第2図は第1
図の結線回路図、第3図は動作を説明するための電流波
形図、第4図および第5図は補正磁界による動作原理の
説明図、第6図および第7図はコマ収差およびYhミス
コンバーゼンスの補正特性図、第8図はミスコンバーゼ
ンスパターンを示す第1象現図、第9図は補正前のミス
コンバーゼンスパターン図、第lO図および第11図は
第9図におけるコマ収差およびyhミスコンバーゼンス
の一般的な特性図、$12図は従来の偏向ヨーク装置の
外観斜視図、第13図は従来のコンパーゼンス補正装置
を示す要部の正面図である.
(2)・・・CRTネック部、(5)・・・垂直偏向コ
イル、(tD.(12)・・・E字形磁性体、(31)
.(32) −・・中央部補正コイル、(33) ,
(34)・・・上辺部補正コイル、(35) , (3
B)・・・下辺部補正コイル、(81)〜(B3)・・
・可変抵抗、(D1)〜(D4)・・・ダイオード.な
お,図中の同一符号は同一または相当部分を示す.FIG. 1 is a front view showing the configuration of a correction coil arrangement n in a deflection yoke device according to an embodiment of the present invention, and FIG.
Figure 3 is a current waveform diagram to explain the operation, Figures 4 and 5 are illustrations of the operating principle using a correction magnetic field, Figures 6 and 7 are for coma aberration and Yh error. Convergence correction characteristic diagram, Figure 8 is the first quadrant diagram showing the misconvergence pattern, Figure 9 is the misconvergence pattern diagram before correction, Figures 1O and 11 are the coma aberration and yh mis in Figure 9. A general characteristic diagram of convergence, Figure 12 is an external perspective view of a conventional deflection yoke device, and Figure 13 is a front view of the main parts of a conventional convergence correction device. (2)...CRT neck, (5)...Vertical deflection coil, (tD.(12)...E-shaped magnetic body, (31)
.. (32) --- Central correction coil, (33) ,
(34) ... Upper side correction coil, (35) , (3
B)...lower side correction coil, (81) to (B3)...
・Variable resistor, (D1) to (D4)...diode. Note that the same symbols in the figures indicate the same or equivalent parts.
Claims (1)
と、この陰極線管のネック部上に配置された偏向ヨーク
と、この偏向ヨークの後方部に配置された補正コイル装
置とを具備し、上記補正コイル装置は、インライン配列
の水平軸上にそれぞれ極をもつ左右一対の中央部補正コ
イルと、上記水平軸の上方対角部にそれぞれ極をもつ上
辺部補正コイルと、上記水平軸の下方対角部にそれぞれ
極をもつ下辺部補正コイルとからなり、上記中央部補正
コイルには垂直偏向鋸歯状の補正電流を、また上記上辺
部補正コイルおよび下辺部補正コイルにはそれぞれ垂直
偏向電流を半波整流しパラボラ状に成形した補正電流を
供給するように構成したことを特徴とする偏向ヨーク装
置。(1) A cathode ray tube having three electron guns arranged in-line, a deflection yoke disposed on the neck of the cathode ray tube, and a correction coil device disposed at the rear of the deflection yoke; The correction coil device includes a pair of left and right center correction coils each having a pole on the horizontal axis in an inline arrangement, an upper side correction coil having a pole each on an upper diagonal of the horizontal axis, and a lower pair of correction coils on the horizontal axis. It consists of lower side correction coils each having a pole at each corner, the center correction coil receives a vertical deflection sawtooth correction current, and the upper side correction coil and lower side correction coil each receive a half vertical deflection current. A deflection yoke device characterized in that it is configured to supply a wave-rectified correction current shaped into a parabolic shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1241338A JPH0766757B2 (en) | 1989-09-18 | 1989-09-18 | Deflection yoke device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1241338A JPH0766757B2 (en) | 1989-09-18 | 1989-09-18 | Deflection yoke device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03102744A true JPH03102744A (en) | 1991-04-30 |
JPH0766757B2 JPH0766757B2 (en) | 1995-07-19 |
Family
ID=17072818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1241338A Expired - Fee Related JPH0766757B2 (en) | 1989-09-18 | 1989-09-18 | Deflection yoke device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0766757B2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6235440A (en) * | 1985-08-08 | 1987-02-16 | Denki Onkyo Co Ltd | Deflection york device |
JPH01115038A (en) * | 1987-10-28 | 1989-05-08 | Hitachi Ltd | Deflection yoke |
-
1989
- 1989-09-18 JP JP1241338A patent/JPH0766757B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6235440A (en) * | 1985-08-08 | 1987-02-16 | Denki Onkyo Co Ltd | Deflection york device |
JPH01115038A (en) * | 1987-10-28 | 1989-05-08 | Hitachi Ltd | Deflection yoke |
Also Published As
Publication number | Publication date |
---|---|
JPH0766757B2 (en) | 1995-07-19 |
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