JPH08182013A - Digital convergence automatic adjustment device - Google Patents

Digital convergence automatic adjustment device

Info

Publication number
JPH08182013A
JPH08182013A JP6324410A JP32441094A JPH08182013A JP H08182013 A JPH08182013 A JP H08182013A JP 6324410 A JP6324410 A JP 6324410A JP 32441094 A JP32441094 A JP 32441094A JP H08182013 A JPH08182013 A JP H08182013A
Authority
JP
Japan
Prior art keywords
data
adjustment
color
digital convergence
camera
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
JP6324410A
Other languages
Japanese (ja)
Inventor
Ryoichi Takayoshi
良一 高吉
Masanori Sakai
正則 坂井
Kuninori Matsumi
邦典 松見
Yoshimasa Takeuchi
与志政 竹内
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.)
Hitachi Ltd
Hitachi Advanced Digital Inc
Original Assignee
Hitachi Ltd
Hitachi Video and Information System Inc
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 Hitachi Ltd, Hitachi Video and Information System Inc filed Critical Hitachi Ltd
Priority to JP6324410A priority Critical patent/JPH08182013A/en
Publication of JPH08182013A publication Critical patent/JPH08182013A/en
Pending legal-status Critical Current

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  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE: To attain high accuracy and the same criterion for the measurement by displaying a special pattern (dot display only for adjustment point) for each color and measuring accurately a gravity center of a relative position on a measurement pattern with a camera and a visual sensor. CONSTITUTION: The device is made up of a camera image fetch section 1, an image processing section 2 by a visual sensor, a CPU section 3 being a deviation arithmetic operation, generation of feedback data or the like and an entire command and a jig 4 reading/writing in-set digital convergence data and a configuration 5 controlling a set to be checked.

Description

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

【0001】[0001]

【産業上の利用分野】本発明は投射型テレビの主幹調整
であるコンバーゼンス調整の自動化装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automation device for convergence adjustment which is the main adjustment of a projection television.

【0002】[0002]

【従来の技術】デジタルコンバーゼンス調整の概要を以
下に示す。
2. Description of the Related Art An outline of digital convergence adjustment is shown below.

【0003】投射型テレビは、R,G,Bそれぞれ独立
したCRTより投射された3色の光をスクリーン上で、
同じ位置に表示するものである。
The projection type television displays three colors of light projected from CRTs independent of R, G and B on a screen.
It is displayed at the same position.

【0004】CRTの取付け精度、各CRT内の電子ビ
ームを制御する偏向ヨーク(以下DYと略す)の磁界ば
らつき等があり、スクリーン上での色を一致させること
は困難である。そこで新たにDYを補正するコンバーゼ
ンス補正ヨーク(以下CYと略す)を設け水平,垂直各
走査領域ごとに電流値を換え、磁界を制御し、画面全域
においてR,G,B3色が一致するようにする。
It is difficult to match the colors on the screen due to the mounting accuracy of the CRT, the magnetic field variation of the deflection yoke (hereinafter abbreviated as DY) which controls the electron beam in each CRT, and the like. Therefore, a convergence correction yoke (hereinafter abbreviated as CY) for newly correcting DY is provided to change the current value for each of the horizontal and vertical scanning areas to control the magnetic field so that the R, G, and B colors match in the entire screen. To do.

【0005】これを調整する従来技術は、画面上の各ポ
イントごとの色ずれ量を作業者が目視で確認し、調整を
行っている。このため、多大な時間が必要である。又、
水平方向は時間的に連続なため、セット内回路で、L.
P.Fでデータを連続的に変換している。そのため1ポ
イントのみ独立データとならず、左右のずれ量を見込ん
で調整を行う必要があり、作業の熟練度を要す。
In the prior art for adjusting this, the operator visually confirms the amount of color misregistration at each point on the screen to make the adjustment. Therefore, a lot of time is required. or,
Since the horizontal direction is temporally continuous, the L.
P. Data is continuously converted at F. Therefore, only one point is not independent data, and it is necessary to make adjustments in consideration of the amount of left / right deviation, which requires skill level of work.

【0006】[0006]

【発明が解決しようとする課題】作業者が各ポイント毎
に、目視測定してまたポイント毎に調整していたため熟
練を要し、又多大な調整時間が必要であった。
The operator needs to be skilled and requires a great deal of adjustment time because the operator visually measures and adjusts at each point.

【0007】本発明の目的はカメラ及び視覚センサで画
像を取り込み、パソコンでフィードバックデータを作成
後セットへの書き込みを自動で行い、作業者の熟練に依
存していた精度を高精度且つ、同一基準化することによ
り精度の安定性を確保し、自動調整化することにより、
熟練レスを図ることにある。
An object of the present invention is to capture an image with a camera and a visual sensor, create feedback data with a personal computer, and then automatically write the data into a set. The precision depending on the skill of an operator is highly accurate and the same standard. By ensuring the stability of accuracy by making the automatic adjustment,
The goal is to be less skilled.

【0008】[0008]

【課題を解決するための手段】上記目的を達成するため
に、本発明はテレビ画面上に交互に表示された各色の各
ポイント毎の位置をカメラで取り込み視覚センサで重心
演算することにより高精度測定し、各色の各ポイント毎
の色ずれを演算,補正した後全ポイントを一括調整す
る。
In order to achieve the above object, the present invention achieves high precision by taking in the position of each point of each color alternately displayed on the television screen with a camera and calculating the center of gravity with a visual sensor. After measuring and calculating and correcting the color shift for each point of each color, all points are adjusted collectively.

【0009】[0009]

【作用】各色ごとに、特殊パターン(調整ポイントのみ
ドット表示)を表示し、それをカメラ及び視覚センサで
測定画面上の相対的位置を正確に重心測定することによ
り高精度、且つ測定の同一基準化が図れる。又、ずれ
量、フィードバック量をパソコン内で処理することによ
り、調整速度の高速化,自動化が図れる。
[Function] High precision and the same standard of measurement by displaying a special pattern (dot display only for adjustment points) for each color and accurately measuring the relative position on the measurement screen with the camera and visual sensor. Can be realized. Further, by processing the deviation amount and the feedback amount in the personal computer, it is possible to speed up and automate the adjustment speed.

【0010】[0010]

【実施例】以下、本発明の実施例を図面を用いて説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.

【0011】図1はデジタルコンバーゼンス自動調整装
置の構成図である。1はカメラ画像取り込み部、2は視
覚センサによる画像処理部、3はずれ量演算、フィード
バックデータ等作成、全体指令部のCPU部、4はセッ
ト内デジタルコンバーゼンスデータを読み書きする治具
(以下デジコン治具と略す)であり、5の被チェックセ
ットを制御する。
FIG. 1 is a block diagram of a digital convergence automatic adjustment device. 1 is a camera image capturing unit, 2 is an image processing unit using a visual sensor, 3 is a displacement amount calculation, feedback data creation, etc., a CPU unit of the overall command unit, 4 is a jig for reading / writing digital convergence data in a set Abbreviated) and controls the checked set of 5.

【0012】本装置では、前工程で調整されている基準
色(緑色)でドット表示を行い画像データを取り込み、
パソコン内に基準色位置データファイルを作成する。続
いて、調整色(赤,青色)のドット表示を行い、同様に
調整色位置データファイルを作成する。そこで基準色位
置データファイルと調整色位置データファイルを各ポイ
ントの水平,垂直データの差を色ずれ量とし、その後フ
ィードバック量を演算する。又、調整ポイントのデータ
は高速補間演算処理を行い、デジコンコントロール治具
内のSRAMに書き込みそのデータでセット画面上に表
示をする。この後、フィードバックされた新しいデータ
で表示された調整色の画像をカメラで取り込み、上記と
同様の調整を繰り返し行う。
In this apparatus, dot display is performed with the reference color (green) adjusted in the previous step, image data is fetched,
Create a standard color position data file in the personal computer. Subsequently, the adjustment color (red, blue) dots are displayed, and similarly an adjustment color position data file is created. Therefore, the difference between the horizontal and vertical data of each point in the reference color position data file and the adjusted color position data file is used as the color shift amount, and then the feedback amount is calculated. In addition, the data of the adjustment point is subjected to high-speed interpolation calculation processing, written in the SRAM in the digital control jig, and displayed on the set screen with the data. After that, the image of the adjusted color displayed by the fed-back new data is captured by the camera, and the same adjustment as described above is repeated.

【0013】図2で画像処理概要について説明する。An outline of image processing will be described with reference to FIG.

【0014】6はチェック用の特殊ドットパターンを表
示したセット、7はカメラ視野、8は特定ウインドウ
(一定範囲のみ測定する)、9,10は重心演算された
あとのドットのx,y座標を示す。
6 is a set displaying a special dot pattern for checking, 7 is the field of view of the camera, 8 is a specific window (measures only a certain range), 9 and 10 are the x and y coordinates of the dot after the center of gravity calculation. Show.

【0015】まず、画面上の表示ドットを複数個のカメ
ラで測定し、それぞれのポイントに於いて測定領域を限
定し(特定ウインドウ8)、外乱が入らないようにし、
輝度重心演算をし、サブピクセルの精度でx,y座標を
測定する。
First, the display dots on the screen are measured by a plurality of cameras, and the measurement area is limited at each point (specific window 8) to prevent disturbance from entering.
The luminance center of gravity is calculated, and the x and y coordinates are measured with sub-pixel accuracy.

【0016】図3で、コンバーゼンスずれ量(以下ミス
コン量と略す)、フィードバックデータ作成について説
明する。
With reference to FIG. 3, the amount of convergence deviation (hereinafter, abbreviated as the amount of misconversion) and the creation of feedback data will be described.

【0017】11−R(R標準データ)、11−B(B
標準データ)をあらかじめCPU3にファイルして置
く。
11-R (R standard data), 11-B (B
(Standard data) is previously filed and placed in the CPU 3.

【0018】最初にセットよりデジコン治具のバスライ
ンをとうし、基準色(緑色)データ11−Gを表示デー
タファイル12に読みだし、補間演算17後に、デジコ
ン治具内SRAM13に書き込みそのデータで基準色の
表示を行う。それをカメラで測定し、視覚センサ2で画
像処理し、位置データをCPU3に送信したあと、基準
色位置データ14−Gとしてファイルする。続いてCP
U3内R標準データ11−R(B標準データ11−B)
を表示データファイル12をとうし補間演算17したあ
と、デジコン4内SRAMに書き込み、Rのデジコン表
示を行う。又、Gと同様に画像処理を行ったあと、調整
色位置データ14−G(14−B)にファイルする。
First, the bus line of the digital control jig is passed through the set, the reference color (green) data 11-G is read to the display data file 12, and after interpolation calculation 17, it is written to the SRAM 13 in the digital control jig and the data is used. The standard color is displayed. It is measured by the camera, image-processed by the visual sensor 2, the position data is transmitted to the CPU 3, and then filed as the reference color position data 14-G. Then CP
R standard data 11-R in U3 (B standard data 11-B)
After passing through the display data file 12 and performing an interpolation calculation 17, the data is written in the SRAM in the digital computer 4 and the digital computer display of R is performed. After the image processing is performed in the same manner as G, the adjusted color position data 14-G (14-B) is filed.

【0019】そのあと基準色位置データ14−Gと調整
色位置データ14−R(14−B)の差(ミスコン量1
5)を求める。ここで求めたミスコン量に各ポイントご
とのフィードバック係数を掛け、表示データファイルを
変更する。その後補間演算17後に、デジコン治具内S
RAM13に書き込み表示し、再度測定調整を繰り返
す。
Thereafter, the difference between the reference color position data 14-G and the adjusted color position data 14-R (14-B) (miscon amount 1
5) is calculated. The display data file is changed by multiplying the miscon quantity obtained here by the feedback coefficient for each point. Then, after interpolation calculation 17, S
The RAM 13 is written and displayed, and the measurement adjustment is repeated.

【0020】図4で補間演算について説明する。The interpolation calculation will be described with reference to FIG.

【0021】従来の方式ではデジコン治具内のCPUで
補間を行っていたが、CPUの処理能力が遅かった。本
装置においては補間演算をパソコンCPU3で行ったあ
と、デジコン治具内SRAM13にデータ書き込みを行
う方式とした。又、高速高次曲線補間を実現するため
に、ラグランジェ補間をベースに新補間方式を開発し
た。
In the conventional method, the CPU in the digital control jig was used for interpolation, but the processing capacity of the CPU was slow. In this device, the interpolation calculation is performed by the personal computer CPU 3, and then the data is written in the SRAM 13 in the digital control jig. In addition, we have developed a new interpolation method based on Lagrange interpolation in order to realize high-speed high-order curve interpolation.

【0022】同図の式a0(x),a1(x),a2(x),a3
(x),a4(x)、0〜255は、あらかじめ、CPU内
に係数としてファイルしておき、補間演算時に読みだし
演算することにより高速化を図った。
Equations a 0 (x), a 1 (x), a 2 (x), a 3 in the figure
(x), a 4 (x), and 0 to 255 are previously filed as coefficients in the CPU, and the speed is increased by performing read-out calculation during interpolation calculation.

【0023】図5で特殊ドットパターンについて説明す
る。
The special dot pattern will be described with reference to FIG.

【0024】従来のデジコン調整パターンはクロスハッ
チパターン18でRGB3色同時表示をし、カラーカメ
ラを用いてミスコン量を測定していたが、R−G−B間
の色干渉があり、高精度な色ずれ量測定が困難であっ
た。今回は単色特殊パターンを作成し、モノクロ高感度
カメラでRGB単色表示をし測定する方式とした。
In the conventional digital computer adjustment pattern, three colors of RGB are simultaneously displayed by the cross hatch pattern 18 and the amount of miscon is measured by using a color camera. However, there is color interference between R, G, B, and high precision. It was difficult to measure the amount of color shift. This time, a method of creating a single color special pattern and displaying RGB single color with a monochrome high sensitivity camera was used.

【0025】又、調整ポイントに対し、実際の画面上で
の水平,垂直表示部の移動ポイントは水平移動ポイント
19,垂直移動ポイント20とことなるため、特殊ドッ
トパターンは水平特殊ドットパターン21、垂直特殊ド
ットパターン22の別パターンとした。又それぞれのド
ット数は水平特殊ドットパターン21が、水平方向13
点*垂直方向7点、合計91ポイントとし、垂直特殊ド
ットパターン22が、水平方向12点*垂直方向7点、
合計84ポイントとした。
Further, since the horizontal and vertical movement points of the horizontal and vertical display portions on the actual screen are different from the adjustment point, that is, the horizontal movement point 19 and the vertical movement point 20, the special dot patterns are the horizontal special dot pattern 21 and the vertical special dot pattern. It is a different pattern from the special dot pattern 22. In addition, the number of dots for each of the horizontal special dot patterns 21 is 13 in the horizontal direction.
Points * vertical direction 7 points, totaling 91 points, vertical special dot pattern 22 is horizontal direction 12 points * vertical direction 7 points,
The total is 84 points.

【0026】[0026]

【発明の効果】本発明によれば、自動調整化及び高速化
によるライン全体の生産性の向上を図ることができる。
According to the present invention, it is possible to improve the productivity of the whole line by automatic adjustment and speeding up.

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

【図1】本発明の一実施例のブロック図。FIG. 1 is a block diagram of an embodiment of the present invention.

【図2】本発明の一実施例の画像処理の説明図。FIG. 2 is an explanatory diagram of image processing according to an embodiment of the present invention.

【図3】本発明の一実施例のデータ処理部のブロック
図。
FIG. 3 is a block diagram of a data processing unit according to an embodiment of the present invention.

【図4】本発明の一実施例の補間演算の説明図。FIG. 4 is an explanatory diagram of interpolation calculation according to an embodiment of the present invention.

【図5】本発明の一実施例の特殊ドットパターンの説明
図。
FIG. 5 is an explanatory diagram of a special dot pattern according to an embodiment of the present invention.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 松見 邦典 神奈川県横浜市戸塚区吉田町292番地株式 会社日立画像情報システム内 (72)発明者 竹内 与志政 東京都千代田区神田駿河台四丁目6番地株 式会社日立製作所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kuninori Matsumi 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Hitachi Image Information Systems Co., Ltd. (72) Inventor Yoshimasa Takeuchi 4-6, Kanda Surugadai, Chiyoda-ku, Tokyo Incorporated company Hitachi

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】プロジェクションテレビの調整工程の中で
緑色,赤色,青色の各色間の色ずれをなくすデジタルコ
ンバーゼンス調整において、3色の各調整ポイントにお
ける色ずれ量を測定したのち、補正フィードバックデー
タを書き込む調整を自動で行うことを特徴とするデジタ
ルコンバーゼンス自動調整装置。
1. In a digital convergence adjustment for eliminating color deviation among green, red and blue colors in an adjustment process of a projection television, after measuring color deviation amount at each adjustment point of three colors, correction feedback data is obtained. A digital convergence automatic adjustment device characterized by automatically adjusting writing.
JP6324410A 1994-12-27 1994-12-27 Digital convergence automatic adjustment device Pending JPH08182013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6324410A JPH08182013A (en) 1994-12-27 1994-12-27 Digital convergence automatic adjustment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6324410A JPH08182013A (en) 1994-12-27 1994-12-27 Digital convergence automatic adjustment device

Publications (1)

Publication Number Publication Date
JPH08182013A true JPH08182013A (en) 1996-07-12

Family

ID=18165493

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6324410A Pending JPH08182013A (en) 1994-12-27 1994-12-27 Digital convergence automatic adjustment device

Country Status (1)

Country Link
JP (1) JPH08182013A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6056408A (en) * 1997-05-28 2000-05-02 Canon Kabushiki Kaisha Method and displaying projected image and projection-type image display apparatus
KR20040036348A (en) * 2002-10-24 2004-04-30 엘지전자 주식회사 Display control method for projection television
KR100484139B1 (en) * 2002-05-17 2005-04-18 삼성전자주식회사 Apparatus and method for examining the function of convergence adjustment
KR100509105B1 (en) * 1997-01-24 2005-11-16 도이체 톰손-브란트 게엠베하 Circuit for convergence setting in a projection television set
CN100389595C (en) * 2006-04-30 2008-05-21 北京中星微电子有限公司 Television image algorithm checking system and method
JP2014003615A (en) * 2005-04-26 2014-01-09 Imax Corp Electronic projection system and method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100509105B1 (en) * 1997-01-24 2005-11-16 도이체 톰손-브란트 게엠베하 Circuit for convergence setting in a projection television set
US6056408A (en) * 1997-05-28 2000-05-02 Canon Kabushiki Kaisha Method and displaying projected image and projection-type image display apparatus
KR100484139B1 (en) * 2002-05-17 2005-04-18 삼성전자주식회사 Apparatus and method for examining the function of convergence adjustment
KR20040036348A (en) * 2002-10-24 2004-04-30 엘지전자 주식회사 Display control method for projection television
JP2014003615A (en) * 2005-04-26 2014-01-09 Imax Corp Electronic projection system and method
JP2014017815A (en) * 2005-04-26 2014-01-30 Imax Corp Electronic projection systems and methods
US9165536B2 (en) 2005-04-26 2015-10-20 Imax Corporation Systems and methods for projecting composite images
CN100389595C (en) * 2006-04-30 2008-05-21 北京中星微电子有限公司 Television image algorithm checking system and method

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