JPS6159040B2 - - Google Patents
Info
- Publication number
- JPS6159040B2 JPS6159040B2 JP8835977A JP8835977A JPS6159040B2 JP S6159040 B2 JPS6159040 B2 JP S6159040B2 JP 8835977 A JP8835977 A JP 8835977A JP 8835977 A JP8835977 A JP 8835977A JP S6159040 B2 JPS6159040 B2 JP S6159040B2
- Authority
- JP
- Japan
- Prior art keywords
- pattern
- signal
- screen
- image
- image pattern
- 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.)
- Expired
Links
- 238000003384 imaging method Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 3
- 230000003321 amplification Effects 0.000 description 6
- 238000003199 nucleic acid amplification method Methods 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Description
【発明の詳細な説明】
本発明はカラーテレビセツトの画面上に発生さ
せた画像パターンを撮像装置により撮影し、その
出力信号処理によりテレビ画面のコンバーゼンス
（色ずれ）等の画像検査をする装置に用いて最適
な輝度条件を具備した画像パターンを発生する装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an apparatus for photographing an image pattern generated on the screen of a color television set using an imaging device, and performing image inspection for convergence (color shift), etc. on the television screen by processing the output signal. The present invention relates to an apparatus for generating an image pattern with optimal brightness conditions using the present invention.
従来、カラーテレビのコンバーゼンス（色ず
れ）検査に使用されている、被検査画面上に発生
せる画像パターンは第１図に示すように、パター
ン各部で均一な輝度を有するものである。このパ
ターンを発生させたカラーテレビ画面全面を、第
２図に示すようにテレビカメラ等の撮像装置によ
り撮影すると、被検査画面中央部に対し周辺部か
ら撮像装置までの距離が長いため、又中央部に比
べ周辺部は被写体を見込む角度が斜めとなるた
め、中央部での画像パターンに対し周辺部画像パ
ターンが暗く撮し出される。このため、被検査画
面を同時に撮影し、その画像パターン検出信号を
用いて、画面各部でのコンバーゼンス等の画像を
同時に検査するに際し、画面全面で適正な検出感
度が得られないという欠点があつた。 BACKGROUND ART Conventionally, an image pattern generated on a screen to be inspected, which is used for color television convergence inspection, has uniform brightness in each part of the pattern, as shown in FIG. When the entire color television screen where this pattern occurs is photographed using an imaging device such as a television camera as shown in Figure 2, the distance from the periphery to the imaging device is long compared to the center of the screen to be inspected. Since the angle at which the subject is viewed at the periphery is oblique compared to the image pattern at the center, the image pattern at the periphery is photographed darker than the image pattern at the center. Therefore, when simultaneously photographing the screen to be inspected and using the image pattern detection signals to simultaneously inspect images such as convergence in various parts of the screen, there was a drawback that appropriate detection sensitivity could not be obtained over the entire screen. .
本発明の目的は上記した欠点をなくし、テレビ
カメラ等の撮像装置によりテレビセツト画面上の
画像パターン各部をほゞ均一な感度で検出できる
ようにした画像パターン信号を被検査テレビセツ
トに供給する信号発生装置を提供するにある。 An object of the present invention is to eliminate the above-mentioned drawbacks and to provide a signal for supplying an image pattern signal to a television set to be inspected, which enables each part of the image pattern on the screen of the television set to be detected with substantially uniform sensitivity using an imaging device such as a television camera. To provide the generator.
本発明は、カラーテレビのコンバーゼンス被検
査画面上に発生させる画像パターンにおいて、中
央部分の輝度に対し周辺部の輝度を高くした画像
パターンを用い、撮像装置からパターン各部がほ
ぼ均一な感度で検出できるようにした。本発明に
よるパターン信号発生装置は、従来の一般的な画
像パターン発生装置に水平、垂直信号から画像パ
ターン輝度増幅部分に相当するタイミングでビデ
オ輝度を増幅する回路を付加したものである。本
発明による画像パターンの１実施例を第３図に示
す。この図において細線で示した画像中央部分４
に対し太線で示した画像周辺部分３の輝度を高く
している。これにより第２図に示したようにテレ
ビカメラ等の撮像装置を用いて被検査テレビセツ
ト全画面を撮影した際に画像各部をほぼ均一な感
度で撮す事ができる。上記画像パターン信号をテ
レビセツトに供給するための本発明によるパター
ン輝度信号発生装置の要部の１実施例を第５図に
示す。 The present invention uses an image pattern generated on the convergence inspection screen of a color television, in which the brightness of the peripheral part is higher than the brightness of the central part, so that each part of the pattern can be detected by an imaging device with almost uniform sensitivity. I did it like that. The pattern signal generating device according to the present invention is a conventional general image pattern generating device to which a circuit for amplifying video luminance from horizontal and vertical signals at a timing corresponding to the image pattern luminance amplification portion is added. One embodiment of an image pattern according to the present invention is shown in FIG. In this figure, the central part of the image 4 is indicated by a thin line.
In contrast, the brightness of the peripheral portion 3 of the image indicated by the bold line is increased. As a result, as shown in FIG. 2, when the entire screen of the television set to be inspected is photographed using an imaging device such as a television camera, each part of the image can be photographed with substantially uniform sensitivity. FIG. 5 shows an embodiment of a main part of a pattern luminance signal generating device according to the present invention for supplying the above-mentioned image pattern signal to a television set.
テレビセツトにパターン信号を供給する一般的
なパターン信号発生装置の概略を第４図に示す。
第４図において、１１は378KHz発振器、１２は
分周器、１３はビデオ信号発生器、１４は混合回
路、１５は変調器、１６は色度信号ゲート回路、
１７は色副搬送発生器、１８は搬送信号発生
器、、１９はRF信号を示す。 FIG. 4 shows an outline of a general pattern signal generator for supplying pattern signals to a television set.
In FIG. 4, 11 is a 378KHz oscillator, 12 is a frequency divider, 13 is a video signal generator, 14 is a mixing circuit, 15 is a modulator, 16 is a chromaticity signal gate circuit,
17 is a color subcarrier generator, 18 is a carrier signal generator, and 19 is an RF signal.
本発明は第４図におけるビデオ信号発生器１３
に第５図に示す回路を付加する事により上記画像
パターン信号を発生せしめるものである。以下第
５図により本発明による具体例を説明する。ま
た、第６図は第５図に示す回路の信号との対応を
示す説明図である。単安定マルチ２７，２８，２
９は水平同期信号による各々トリガ入力後、第６
図でh2，h3，h1の掃引に要する時間動作するよう
に設定してある。これとオア回路３０、ナンド回
路３２、ビデオ振幅増幅回路３６の働きにより第
６図に示すh1，h3の期間、画像（格子）パターン
のビデオ信号のレベルを増幅するものであり、こ
れによりh1，h3の期間の画像パターンの輝度を増
大させる。 The present invention is directed to the video signal generator 13 in FIG.
The above-mentioned image pattern signal is generated by adding the circuit shown in FIG. 5 to the image forming apparatus. A specific example according to the present invention will be explained below with reference to FIG. Further, FIG. 6 is an explanatory diagram showing the correspondence with the signals of the circuit shown in FIG. 5. Monostable multi 27, 28, 2
9 is the sixth signal after each trigger input by the horizontal synchronization signal.
In the figure, it is set to operate for the time required to sweep h 2 , h 3 , and h 1 . This and the functions of the OR circuit 30, the NAND circuit 32, and the video amplitude amplification circuit 36 amplify the level of the video signal of the image (lattice) pattern during the periods h1 and h3 shown in FIG. The brightness of the image pattern during periods h 1 and h 3 is increased.
また、走査線カウンタ２２は水平同期信号数を
カウントし、カウント数ｎXを出力するものであ
り、垂直同期信号によりゼロリセツトされる。デ
イジタル比較器２３はデイジタル値設定器２５の
設定値n1とｎXを比較し、ｎX≦n1の期間ナンド回
路３３のゲートを開き、ビデオ振幅増幅回路３７
により画像パターンレベルを増幅するものであ
り、これにより第６図に示すn1より画面の上の部
分の画像パターン輝度を増大させる。 Further, the scanning line counter 22 counts the number of horizontal synchronizing signals and outputs a count number nX , which is reset to zero by the vertical synchronizing signal. The digital comparator 23 compares the set value n 1 of the digital value setter 25 with n X , opens the gate of the NAND circuit 33 for a period of n
This amplifies the image pattern level, thereby increasing the image pattern brightness in the upper part of the screen from n1 shown in FIG.
同様に、デイジタル比較器２４、ナンド回路３
４、ビデオ振幅増幅器３８により、ｎX≧n2の期
間、画像パターンのビデオ信号レベルすなわち第
６図においてn2より画面下の部分の画像パターン
輝度を増大させる。また、VR1によりh1，h3の期
間のパターン輝度増幅度を調整できる。同様に
VR2，VR3各々により上方、n2より下方部分のパ
ターン輝度増幅度を設定できるものである。ま
た、h1，h2，h3、及びn1，n2を変えることにより
画像パターンの輝度増幅範囲を自由に設定でき
る。 Similarly, digital comparator 24, NAND circuit 3
4. The video amplitude amplifier 38 increases the video signal level of the image pattern, that is, the brightness of the image pattern in the portion below n 2 on the screen in FIG. 6, for a period of n x ≧n 2 . Further, the pattern brightness amplification degree during the periods h 1 and h 3 can be adjusted by VR 1 . similarly
The pattern brightness amplification degree of the upper portion and the lower portion of n 2 can be set by VR 2 and VR 3 respectively. Further, by changing h 1 , h 2 , h 3 , and n 1 , n 2 , the brightness amplification range of the image pattern can be freely set.
第７図ａ，ｂに、本発明によるパターン輝度信
号発生回路を使用しない場合の、画像（格子）パ
ターンビデオ信号の縦線パターンのビデオ信号波
形及び横線パターンのビデオ信号波形を示す。次
に、本発明によるパターン輝度信号発生回路を使
用した場合の、n1より画面上方部分及びn2より画
面下方部分での画像（格子）パターンビデオ信号
の縦線パターンのビデオ信号波形をｃに、同じく
横線パターンのビデオ波形をｄに示す。また、
n1，n2間における縦線パターンのビデオ信号波形
はｅ、横線パターンのビデオ信号波形はｆのよう
になる。 7a and 7b show a video signal waveform of a vertical line pattern and a video signal waveform of a horizontal line pattern of an image (lattice) pattern video signal when the pattern brightness signal generation circuit according to the present invention is not used. Next, when using the pattern luminance signal generation circuit according to the present invention, the video signal waveform of the vertical line pattern of the image (lattice) pattern video signal in the upper part of the screen from n 1 and the lower part of the screen from n 2 is expressed as c. , the video waveform of the same horizontal line pattern is shown in d. Also,
The video signal waveform of the vertical line pattern between n 1 and n 2 is e, and the video signal waveform of the horizontal line pattern is f.
本発明によりテレビカメラ等の撮像装置により
テレビセツト画面全面でのコンバーゼンス等の画
像を簡単な装置で高速に安定した性能で検出でき
ることとなつた。 According to the present invention, images such as convergence on the entire screen of a television set can be detected with a simple device at high speed and with stable performance using an imaging device such as a television camera.
第１図は従来の画像パターンを示す。第２図は
撮像装置によるテレビセツト画面のコンバーゼン
ス検査の様子を示す。第３図は本発明による輝度
変化を具備した画像パターンを示す。第４図は一
般的な画像パターン発生装置の概略を示す。第５
図は本発明による輝度変化画像パターンの発生回
路を示す。第６図は本発明による輝度変化画像パ
ターンの、第５図に示す回路図の信号との対応を
示す説明図を示す。第７図のａ，ｂは従来の画像
パターン（格子パターン）発生装置におけるビデ
オ信号波形、ｃ，ｄ，ｅ，ｆは本発明回路を用い
た際に得られるビデオ信号波形を示す。
１３：ビデオ信号発生器、２１：画像パターン
発生器、２２：水平同期信号カウンタ、２３，２
４：デイジタル比較器、２５：デイジタル値n1設
定器、２６：デイジタル値n2設定器、２７，２
８，２９：単安定マルチバイブレータ、３６，３
７，３８：ビデオ振幅増幅回路。
FIG. 1 shows a conventional image pattern. FIG. 2 shows a convergence test of a television set screen using an imaging device. FIG. 3 shows an image pattern with brightness variation according to the invention. FIG. 4 shows an outline of a general image pattern generating device. Fifth
The figure shows a circuit for generating a brightness-varying image pattern according to the present invention. FIG. 6 shows an explanatory diagram showing the correspondence between the luminance change image pattern according to the present invention and the signals of the circuit diagram shown in FIG. 5. In FIG. 7, a and b show video signal waveforms in a conventional image pattern (lattice pattern) generator, and c, d, e, and f show video signal waveforms obtained when the circuit of the present invention is used. 13: Video signal generator, 21: Image pattern generator, 22: Horizontal synchronization signal counter, 23,2
4: Digital comparator, 25: Digital value n 1 setter, 26: Digital value n 2 setter, 27,2
8,29: Monostable multivibrator, 36,3
7, 38: Video amplitude amplification circuit.
Claims (1)
をテレビカメラ等の撮像装置により撮影し、その
出力信号によりカラーテレビの画像検査を行なう
装置に用いる画像パターンを発生するパターン信
号発生装置において、該パターン信号発生装置内
のビデオ信号発生器に、水平及び垂直同期信号の
処理により、テレビ画面の中央部より周辺部のパ
ターン輝度を増大させる部分のタイミング時間を
任意に設定することにより周辺部の範囲を可変に
する回路と、このタイミング時間におけるパター
ン信号を任意の大きさに増幅することにより周辺
部と中央部との輝度比率を可変にする回路とを付
加したことを特徴とするパターン信号発生装置。1. In a pattern signal generation device that captures an image pattern displayed on a color television screen with an imaging device such as a television camera, and generates an image pattern used in a device that performs image inspection of a color television using the output signal, the pattern signal is By processing the horizontal and vertical synchronization signals in the video signal generator in the generator, the range of the peripheral area can be varied by arbitrarily setting the timing time of the part that increases the pattern brightness of the peripheral area from the center of the TV screen. What is claimed is: 1. A pattern signal generating device comprising: a circuit for making the pattern signal at this timing time to an arbitrary magnitude, thereby making the brightness ratio between the peripheral part and the central part variable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8835977A JPS5423320A (en) | 1977-07-25 | 1977-07-25 | Generator for pattern signal for color television picture inspection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8835977A JPS5423320A (en) | 1977-07-25 | 1977-07-25 | Generator for pattern signal for color television picture inspection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5423320A JPS5423320A (en) | 1979-02-21 |
| JPS6159040B2 true JPS6159040B2 (en) | 1986-12-15 |
Family
ID=13940607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8835977A Granted JPS5423320A (en) | 1977-07-25 | 1977-07-25 | Generator for pattern signal for color television picture inspection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5423320A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60148426A (en) * | 1983-12-29 | 1985-08-05 | 株式会社ニツサンキコ− | Banding packer for cylindrical material |
-
1977
- 1977-07-25 JP JP8835977A patent/JPS5423320A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5423320A (en) | 1979-02-21 |
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