JPH0361765U - - Google Patents
Info
- Publication number
- JPH0361765U JPH0361765U JP1989123519U JP12351989U JPH0361765U JP H0361765 U JPH0361765 U JP H0361765U JP 1989123519 U JP1989123519 U JP 1989123519U JP 12351989 U JP12351989 U JP 12351989U JP H0361765 U JPH0361765 U JP H0361765U
- Authority
- JP
- Japan
- Prior art keywords
- television
- horizontal
- oscillator
- stabilizing device
- screen 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
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の一実施例によるテレビにおけ
るオンスクリーン表示の安定化装置の要部回路図
、第２図はオンスクリーン表示の位置を決定する
ための基準信号の取り方を概念的に示す図、第３
図は従来装置で水平方向の位置決めを行うための
ドツトクロツク発生部の回路図、第４図ａ，ｂは
従来と本考案によるオンスクリーン画面を比較し
て示す図である。
１１……水平ブランキングパルス端子、１２…
…電圧制御発振器、１３……プリスケーラ、１４
……位相比較器、１５……ローパスフイルタ。
Fig. 1 is a circuit diagram of a main part of a stabilizing device for an on-screen display in a television according to an embodiment of the present invention, and Fig. 2 conceptually shows how to obtain a reference signal for determining the position of an on-screen display. Figure, 3rd
This figure is a circuit diagram of a dot clock generator for horizontal positioning in a conventional device, and FIGS. 4a and 4b are diagrams showing a comparison of the on-screen screens of the conventional and the present invention. 11...Horizontal blanking pulse terminal, 12...
...Voltage controlled oscillator, 13... Prescaler, 14
...Phase comparator, 15...Low pass filter.
Claims (1)
位置を決定する基準信号として、垂直方向は垂直
ブランキングの終りからの水平走査の数、水平方
向は水平ブランキングの終りから発振を開始する
発振器のドツトクロツク数を用いてなるテレビに
おけるオンスクリーン表示の安定化装置において
、 上記発振器を電圧制御発振器とすると共に、水
平ブランキング信号と発振器のドツトクロツク発
振出力を位相比較器に入力し、この位相比較器の
出力をローパスフイルタを介して上記発振器の入
力としてＰＬＬ回路としたことを特徴とするテレ
ビにおけるオンスクリーン表示の安定化装置。[Claim for Utility Model Registration] As a reference signal for determining the display position for displaying characters, etc. on a television screen, the vertical direction is the number of horizontal scans from the end of vertical blanking, and the horizontal direction is horizontal blanking. In a stabilizing device for an on-screen display in a television, which uses the number of dot clocks of an oscillator that starts oscillation from the end of A stabilizing device for an on-screen display in a television, characterized in that the output of the phase comparator is passed through a low-pass filter and used as the input of the oscillator in a PLL circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989123519U JPH0361765U (en) | 1989-10-19 | 1989-10-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989123519U JPH0361765U (en) | 1989-10-19 | 1989-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0361765U true JPH0361765U (en) | 1991-06-17 |
Family
ID=31671492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989123519U Pending JPH0361765U (en) | 1989-10-19 | 1989-10-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0361765U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS558974B1 (en) * | 1970-10-23 | 1980-03-07 | ||
| JPS60201781A (en) * | 1984-03-26 | 1985-10-12 | Sony Corp | Display device |
-
1989
- 1989-10-19 JP JP1989123519U patent/JPH0361765U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS558974B1 (en) * | 1970-10-23 | 1980-03-07 | ||
| JPS60201781A (en) * | 1984-03-26 | 1985-10-12 | Sony Corp | Display device |
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