JPS62152584U - - Google Patents
Info
- Publication number
- JPS62152584U JPS62152584U JP3980486U JP3980486U JPS62152584U JP S62152584 U JPS62152584 U JP S62152584U JP 3980486 U JP3980486 U JP 3980486U JP 3980486 U JP3980486 U JP 3980486U JP S62152584 U JPS62152584 U JP S62152584U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- pulse
- vertical
- display
- 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
- 230000010355 oscillation Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims 3
- 238000000926 separation method Methods 0.000 claims 3
- 230000001360 synchronised effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Studio Circuits (AREA)
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案に係る画面表示装置のブロツク
図、第２図は第１図のパルス幅変更回路の一例を
示す回路図、第３図は第２図の回路動作を説明す
る波形図、第４図は従来の画面表示装置のブロツ
ク図である。
２２……映像検波回路、２３……映像増幅回路
、２５……映像出力回路、２７……水平偏向回路
、２８……垂直偏向回路、２８ａ……水平発振回
路、２９……同期信号検出回路、３０……パルス
幅変更回路、３１……制御用マイクロコンピユー
タ、３２……表示文字発生回路、３３……ＣＲＴ
。
1 is a block diagram of a screen display device according to the present invention, FIG. 2 is a circuit diagram showing an example of the pulse width changing circuit of FIG. 1, and FIG. 3 is a waveform diagram explaining the circuit operation of FIG. 2. FIG. 4 is a block diagram of a conventional screen display device. 22...Video detection circuit, 23...Video amplification circuit, 25...Video output circuit, 27...Horizontal deflection circuit, 28...Vertical deflection circuit, 28a...Horizontal oscillation circuit, 29...Synchronization signal detection circuit, 30... Pulse width changing circuit, 31... Control microcomputer, 32... Display character generation circuit, 33... CRT
.
Claims (1)
信号に変換しこの信号より複合カラー映像信号を
再生検波する映像処理手段と、 この映像処理手段からの複合カラー映像信号よ
り色信号を復調するための色復調回路と、 前記映像処理手段からの複合カラー映像信号よ
り同期信号を分離するための同期分離回路と、 この同期分離回路にて分離した水平同期信号を
入力し水平発振パルスを発生する水平発振手段と
、 前記同期分離回路にて分離した垂直同期信号を
入力し垂直発振パルスを発生する垂直発振手段と
、 前記同期分離回路からの同期信号を入力しその
有無を検出するための同期信号検出回路と、 前記垂直発振手段からの垂直発振パルスを入力
しそのパルス幅を前記同期信号検出回路の検出結
果に応じて変更した垂直パルスを出力するための
パルス幅変更回路と、 表示用文字信号を発生するための回路であつて
、前記水平発振手段からの水平発振パルスと前記
パルス幅変更回路からの垂直パルスを基準パルス
として使用し水平及び垂直方向の表示位置を指定
することが可能な表示文字発生回路と、 前記映像処理手段からの輝度信号と前記色復調
回路からの色信号とを入力しマトリクスしてテレ
ビジヨン画像の表示用三原色信号を作成しこの信
号に前記表示文字発生回路からの表示用文字信号
を加えた表示用信号を出力するための映像出力回
路と、 この映像出力回路からの表示用信号を画面上に
表示するための表示手段とを具備したことを特徴
とする画面表示装置。[Scope of Claim for Utility Model Registration] Video processing means that inputs a television broadcast signal, converts it into a video intermediate frequency signal, and re-waves a composite color video signal from this signal; and a composite color video signal from the video processing means. a color demodulation circuit for demodulating the color signal; a sync separation circuit for separating the sync signal from the composite color video signal from the video processing means; horizontal oscillation means that generates an oscillation pulse; vertical oscillation means that inputs the vertical synchronization signal separated by the synchronization separation circuit and generates the vertical oscillation pulse; and inputs the synchronization signal from the synchronization separation circuit and detects the presence or absence of the same. a synchronous signal detection circuit for inputting a vertical oscillation pulse from the vertical oscillation means and a pulse width changing circuit for outputting a vertical pulse whose pulse width is changed according to a detection result of the synchronous signal detection circuit; , a circuit for generating a character signal for display, which uses a horizontal oscillation pulse from the horizontal oscillation means and a vertical pulse from the pulse width changing circuit as a reference pulse to designate a display position in the horizontal and vertical directions; a display character generation circuit capable of inputting and matrixing a luminance signal from the video processing means and a color signal from the color demodulation circuit to create three primary color signals for displaying a television image; A video output circuit for outputting a display signal added with a display character signal from a character generation circuit, and a display means for displaying the display signal from the video output circuit on a screen. Characteristic screen display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3980486U JPS62152584U (en) | 1986-03-20 | 1986-03-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3980486U JPS62152584U (en) | 1986-03-20 | 1986-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62152584U true JPS62152584U (en) | 1987-09-28 |
Family
ID=30853318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3980486U Pending JPS62152584U (en) | 1986-03-20 | 1986-03-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62152584U (en) |
-
1986
- 1986-03-20 JP JP3980486U patent/JPS62152584U/ja active Pending
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