JPS5984959U - Video screen enlarger - Google Patents
Video screen enlargerInfo
- Publication number
- JPS5984959U JPS5984959U JP17878782U JP17878782U JPS5984959U JP S5984959 U JPS5984959 U JP S5984959U JP 17878782 U JP17878782 U JP 17878782U JP 17878782 U JP17878782 U JP 17878782U JP S5984959 U JPS5984959 U JP S5984959U
- Authority
- JP
- Japan
- Prior art keywords
- vertical
- screen
- horizontal
- video screen
- deflection
- 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
- Details Of Television Scanning (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来めカラーテレビ受像機の構成を示すブロッ
ク図、第２図は第１図のカラーテレ受像゛ 機の動作を
説明するための偏向電流を示す図、第３図はこの考案の
映像画面拡大装置の一実施例の構成を示すブロック図、
第４図ａないし、第４図Ｃはそれぞれ同上映像画面拡大
装置の動作を説明するための偏向電流を示す図である。
Ｂ・・・・・・カラー受像管、Ｃ・・・・・・音声受信
号回路、Ｄ・・・・・・色信号再生回路、ＥＶ・・・・
・・垂直偏向コイル、ＥＨ・・・・・・水平偏向コイル
、Ｇ・・・・・・チューナ部、５へ・・・・・・映像検
波器、６・・・・・・映像増幅器、９・・・・・・原色
、信号回路、１１・・・・・・同期分離回路
、１２・；・・・・垂直偏向回路、１３・・・・・・水
平偏向回路、１００・・・・・・画 □面拡大
部、１０１・・・・・・垂直偏向コイル電流切換回路、
１０２・・・・・・水平偏向コイル電流切換回路、１０
３・・・・・・垂直ＤＣオフセット・切換回路、１０４
・・・・・・水平ＤＣオフセット切換回路、１０５・・
・・・・ブ、ランキング補正回路、１０６・・・・・・
画面拡大指令信号。Figure 1 is a block diagram showing the configuration of a conventional color television receiver, Figure 2 is a diagram showing deflection currents to explain the operation of the color television receiver of Figure 1, and Figure 3 is a diagram showing the structure of the color television receiver of this invention. A block diagram showing the configuration of an embodiment of a video screen enlarging device,
FIGS. 4A to 4C are diagrams showing deflection currents for explaining the operation of the above video screen enlarging device, respectively. B...Color picture tube, C...Audio reception signal circuit, D...Color signal reproducing circuit, EV...
...Vertical deflection coil, EH...Horizontal deflection coil, G...Tuner section, to 5...Video detector, 6...Video amplifier, 9 ...Primary colors, signal circuit, 11...Synchronization separation circuit, 12...Vertical deflection circuit, 13...Horizontal deflection circuit, 100...・Screen enlarged section, 101... Vertical deflection coil current switching circuit,
102...Horizontal deflection coil current switching circuit, 10
3...Vertical DC offset/switching circuit, 104
...Horizontal DC offset switching circuit, 105...
...B, ranking correction circuit, 106...
Screen enlargement command signal.
Claims (1)
する映像再生手段と、上記ブラウン管の画面の拡大モー
ド時に画面拡大指令信号により上記垂直偏向系と水平偏
向系の偏向電流を独立して切り換える第１の手段と、上
記画面の任意の部分を縦、横任意の比率で拡大できるよ
うに上記垂直および水平偏向系の直流オフセットを可変
する第２の手段とよりなる映像画面拡大装置。a video reproducing means for reproducing an image on a cathode ray tube having vertical and horizontal deflection systems; and a first means for independently switching the deflection currents of the vertical deflection system and the horizontal deflection system by a screen enlargement command signal when the screen of the cathode ray tube is in an enlargement mode. and second means for varying the direct current offsets of the vertical and horizontal deflection systems so that any part of the screen can be enlarged at any vertical or horizontal ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17878782U JPS5984959U (en) | 1982-11-26 | 1982-11-26 | Video screen enlarger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17878782U JPS5984959U (en) | 1982-11-26 | 1982-11-26 | Video screen enlarger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5984959U true JPS5984959U (en) | 1984-06-08 |
Family
ID=30388072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17878782U Pending JPS5984959U (en) | 1982-11-26 | 1982-11-26 | Video screen enlarger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5984959U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5097220A (en) * | 1973-12-25 | 1975-08-02 | ||
| JPS5348623A (en) * | 1976-10-15 | 1978-05-02 | Nec Home Electronics Ltd | Display system for partial enlargement marker |
-
1982
- 1982-11-26 JP JP17878782U patent/JPS5984959U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5097220A (en) * | 1973-12-25 | 1975-08-02 | ||
| JPS5348623A (en) * | 1976-10-15 | 1978-05-02 | Nec Home Electronics Ltd | Display system for partial enlargement marker |
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