JPS58120286A - Horizontal line position detector for vidual display - Google Patents
Horizontal line position detector for vidual displayInfo
- Publication number
- JPS58120286A JPS58120286A JP57001775A JP177582A JPS58120286A JP S58120286 A JPS58120286 A JP S58120286A JP 57001775 A JP57001775 A JP 57001775A JP 177582 A JP177582 A JP 177582A JP S58120286 A JPS58120286 A JP S58120286A
- Authority
- JP
- Japan
- Prior art keywords
- horizontal line
- display
- signal
- vidual
- line position
- 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
Links
Landscapes
- Processing Or Creating Images (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、フライトシミュレータ用計算機作像ガ式ビジ
ュアルディスプレイの画像発生部の改良ンこ関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the image generation section of a computer-generated visual display for a flight simulator.
イ＋ｉ来の計算機作像方式のビジュアルディスプレイシ
こおいて人力信号から画像発生部の遅延時間を測定する
のに実際に表示される映像の変化を検出することが出来
ないだめ９等価的な遅延回路等を用いで測定することが
多く用いられていた。このため、正確な遅延時間を測定
するＶこは、大親模な等価回路を田意し、まだ測定Ｖこ
萼する時間も莫大なものであった、
本発明はこれらの欠点を除去するため、映像の変化が水
平線の位置変化に帰着されることに看目し９画面の表示
開始から水平縁布までの区間を検出可能な回路をもうけ
ることにより画像発生の遅延時間を測定可能としだもの
である。In the visual display of conventional computer imaging methods, it is impossible to detect changes in the actually displayed image to measure the delay time of the image generation unit from human input signals.9 Equivalent delay Measurements using circuits, etc. were often used. For this reason, in order to accurately measure the delay time, a basic equivalent circuit was developed, and the time required to perform the measurement was still enormous.The present invention aims to eliminate these drawbacks. Recognizing that changes in the image result from changes in the position of the horizontal line, it was possible to measure the delay time of image generation by providing a circuit that could detect the section from the start of display on nine screens to the horizontal border. It is.
図は本発明の実施例である。１は空の色信号。The figure shows an embodiment of the invention. 1 is the color signal of the sky.
２は画面の色信号、３は水平駆動信号、４は垂直駆動信
号、５は色信号一致回路、６はＨＤ信号の前線検出回路
、７はアンド回路、８は遅延回路。2 is a screen color signal, 3 is a horizontal drive signal, 4 is a vertical drive signal, 5 is a color signal matching circuit, 6 is an HD signal front detection circuit, 7 is an AND circuit, and 8 is a delay circuit.
９はカウンタ、１０はディジタル−アナログｆ換器（以
下ｎ −Ａ 女換器と称す）である。9 is a counter, and 10 is a digital-to-analog f converter (hereinafter referred to as n-A female converter).
あらかじめ設定された空の色信号１と各走ｋＲごとの画
面色信号２が同一となると、すなわち。When the preset sky color signal 1 and the screen color signal 2 for each run kR become the same, that is.
画面上に空が表示されている期間のみ一致回路５の出力
がオンとなる。一方、水平駆動の＠１１信号とこのオン
となった信号の論理積により、空の色が出ている走査線
ごとにカウントパルスが発生しカウンター９がそのパル
ス数すなわち走査線数をカウントする。１フイールドの
間カウントした後垂直駆動信号４のブランキング期間中
ｌＦ−まずｌ）Ａ変換器１０がカウントした信号をアナ
ログ信号に変換する。Ｉ’）−Ａ変換に必要な時間だけ
遅れてカウンターは遅延回路８の出力によりクリアされ
る。The output of the matching circuit 5 is turned on only during the period when the sky is displayed on the screen. On the other hand, a count pulse is generated for each scanning line showing the color of the sky by the AND of the horizontal drive @11 signal and this turned-on signal, and the counter 9 counts the number of pulses, that is, the number of scanning lines. After counting for one field, during the blanking period of the vertical drive signal 4, 1F - First, l) A converter 10 converts the counted signal into an analog signal. The counter is cleared by the output of the delay circuit 8 after a delay of the time required for I')-A conversion.
このようにして次のフィールドではまた最初の走査線か
ら空の走査線数をカウントする。−以上説明したごとく
１本発明によれば各表示フィールドごとの水平線位置が
検出可能となり、この出ｊＪ信号と９画像発生用人力信
号を同時に観、測すればその間の遅延時間が測定ＯＴ能
となる。In this way, in the next field, the number of empty scan lines is counted again from the first scan line. - As explained above, according to the present invention, the horizontal line position for each display field can be detected, and if the output jJ signal and the human input signal for 9 image generation are simultaneously observed and measured, the delay time between them can be measured OT. Become.
図は本発明の実権例を示すブロック図であり。
５は色信号−数回路、６はＨＤ信号θ）前線検出回路、
７はアンド回路、８は遅延回路、９はカウンタ、 １０
はＤ−Ａ変換器である。The figure is a block diagram showing a practical example of the present invention. 5 is a color signal-number circuit, 6 is an HD signal θ) front detection circuit,
7 is an AND circuit, 8 is a delay circuit, 9 is a counter, 10
is a DA converter.
Claims (1)
いる区間の走査線数をカウントすることにより検出する
水平線位置検出回路。A horizontal line position detection circuit detects the position of a horizontal line by counting the number of scanning lines in a section where the sky is displayed from the display start point of two screens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57001775A JPS58120286A (en) | 1982-01-11 | 1982-01-11 | Horizontal line position detector for vidual display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57001775A JPS58120286A (en) | 1982-01-11 | 1982-01-11 | Horizontal line position detector for vidual display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58120286A true JPS58120286A (en) | 1983-07-18 |
Family
ID=11510943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57001775A Pending JPS58120286A (en) | 1982-01-11 | 1982-01-11 | Horizontal line position detector for vidual display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58120286A (en) |
-
1982
- 1982-01-11 JP JP57001775A patent/JPS58120286A/en active Pending
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