JPH03125584U - - Google Patents
Info
- Publication number
- JPH03125584U JPH03125584U JP1990035126U JP3512690U JPH03125584U JP H03125584 U JPH03125584 U JP H03125584U JP 1990035126 U JP1990035126 U JP 1990035126U JP 3512690 U JP3512690 U JP 3512690U JP H03125584 U JPH03125584 U JP H03125584U
- Authority
- JP
- Japan
- Prior art keywords
- correction
- circuit
- screen
- coil
- scanning
- 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
- 238000010586 diagram Methods 0.000 description 9
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Description
第１図は本考案に係るコンバージエンス補正回
路の一実施例を示す回路図、第２図は同実施例に
おける補正コイルの配置態様図、第３図は同実施
例における補正電流の補正作用を示す説明図、第
４図は本考案に係るコンバージエンス補正回路の
第２の実施例の回路図、第５図はミスコンバージ
エンスＹＨの各種パターン図、第６図は従来のコ
ンバージエンス補正回路の補正により生じるミス
コンバージエンスＹＨの過補正状態のパターン図
、第７図は一般的なダイオードの動作特性図、第
８図は従来のコンバージエンス補正回路により作
り出される補正電流波形をパラボラ理想波形との
比較で示す波形説明図である。
１：垂直偏向コイル、２：抵抗器、３：全波整
流回路、４，５：抵抗器、６，７，８，９：ダイ
オード、１０ａ，１０ｂ：入力側端子、１１ａ，
１１ｂ：出力側端子、１２ａ，１２ｂ：補正コイ
ル、１３，１５：可変抵抗器、１４，１６：ダイ
オード、１７，１８：バイパス経路、２０，２１
：修正回路、２２，２３：ツエナダイオード、２
４，２５：トランジスタ、２６：ネツク部、２７
ａ，２７ｂ：コア、２８ａ，２８ｂ：巻線、３０
，３１：ダイオード。
Fig. 1 is a circuit diagram showing an embodiment of the convergence correction circuit according to the present invention, Fig. 2 is a diagram showing the arrangement of the correction coil in the same embodiment, and Fig. 3 is a diagram showing the correction effect of the correction current in the same embodiment. 4 is a circuit diagram of a second embodiment of the convergence correction circuit according to the present invention, FIG. 5 is a diagram of various patterns of misconvergence YH, and FIG. 6 is a circuit diagram of a conventional convergence correction circuit. Misconvergence YH caused by correction. Figure 7 is a diagram of the operating characteristics of a typical diode. Figure 8 is a diagram showing the correction current waveform created by a conventional convergence correction circuit with the parabolic ideal waveform. It is a waveform explanatory diagram shown by comparison. 1: Vertical deflection coil, 2: Resistor, 3: Full wave rectifier circuit, 4, 5: Resistor, 6, 7, 8, 9: Diode, 10a, 10b: Input side terminal, 11a,
11b: Output side terminal, 12a, 12b: Correction coil, 13, 15: Variable resistor, 14, 16: Diode, 17, 18: Bypass path, 20, 21
: Modification circuit, 22, 23: Zener diode, 2
4, 25: Transistor, 26: Network part, 27
a, 27b: core, 28a, 28b: winding, 30
, 31: Diode.
Claims (1)
を上下互い違いに横切る４極の補正磁界を発生す
る補正コイルが配置され、この補正コイルと垂直
偏向コイルとの間には垂直偏向電流を全波整流し
てパラボラ状の補正電流を前記補正コイルに供給
するダイオードブリツヂ回路の全波整流回路が介
設されているコンバージエンス補正回路において
、前記全波整流回路には陰極線管の画面の上側半
分の走査時に補正電流が流れる第１の経路と、画
面の下側半分の走査時に補正電流が流れる第２の
経路とにそれぞれバイパス経路が設けられ、この
バイパス経路には画面の上下周辺部の走査時に、
対応する当該バイパス経路を開き、画面の中央部
分の走査時にはバイパス経路を閉じるツエナーダ
イオードを用いた補正電流の波形修正回路が形成
されていることを特徴とするコンバージエンス補
正回路。 A correction coil that generates a four-pole correction magnetic field that crosses the blue beam and the red beam alternately above and below is arranged on the deflection yoke, and between this correction coil and the vertical deflection coil, the vertical deflection current is full-wave rectified. In a convergence correction circuit in which a full-wave rectifier circuit of a diode bridge circuit that supplies a parabolic correction current to the correction coil is interposed, the full-wave rectifier circuit is configured to scan the upper half of the screen of the cathode ray tube. A bypass path is provided for a first path through which a correction current flows when scanning the lower half of the screen, and a second path through which a correction current flows when scanning the lower half of the screen.
A convergence correction circuit comprising a correction current waveform correction circuit using a Zener diode that opens the corresponding bypass path and closes the bypass path when scanning the central portion of the screen.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990035126U JP2508686Y2 (en) | 1990-03-31 | 1990-03-31 | Convergence correction circuit |
| KR1019910005042A KR0129006B1 (en) | 1990-03-31 | 1991-03-29 | Circuit for correcting convergence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990035126U JP2508686Y2 (en) | 1990-03-31 | 1990-03-31 | Convergence correction circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03125584U true JPH03125584U (en) | 1991-12-18 |
| JP2508686Y2 JP2508686Y2 (en) | 1996-08-28 |
Family
ID=12433240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990035126U Expired - Fee Related JP2508686Y2 (en) | 1990-03-31 | 1990-03-31 | Convergence correction circuit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2508686Y2 (en) |
| KR (1) | KR0129006B1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02136963U (en) * | 1989-04-18 | 1990-11-15 |
-
1990
- 1990-03-31 JP JP1990035126U patent/JP2508686Y2/en not_active Expired - Fee Related
-
1991
- 1991-03-29 KR KR1019910005042A patent/KR0129006B1/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02136963U (en) * | 1989-04-18 | 1990-11-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR0129006B1 (en) | 1998-04-10 |
| KR910017833A (en) | 1991-11-05 |
| JP2508686Y2 (en) | 1996-08-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |