JP2597294Y2 - Video circuit with dual screen function - Google Patents
Video circuit with dual screen functionInfo
- Publication number
- JP2597294Y2 JP2597294Y2 JP1991090393U JP9039391U JP2597294Y2 JP 2597294 Y2 JP2597294 Y2 JP 2597294Y2 JP 1991090393 U JP1991090393 U JP 1991090393U JP 9039391 U JP9039391 U JP 9039391U JP 2597294 Y2 JP2597294 Y2 JP 2597294Y2
- Authority
- JP
- Japan
- Prior art keywords
- screen
- correction amount
- signal processing
- video
- changing
- 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 - Lifetime
Links
Landscapes
- Transforming Electric Information Into Light Information (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案はテレビジョン受像機等の
二画面（ＰｉｎＰ）機能付映像回路に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video circuit having a two-screen (PinP) function such as a television receiver.
【０００２】[0002]
【従来の技術】近年テレビジョンセットにおいてＰｉｎ
Ｐ機能が主流となってきた。2. Description of the Related Art In recent years, Pins have been used in television sets.
The P function has become mainstream.
【０００３】従来のＰｉｎＰ機能付映像回路は図２に示
す如く、ＰｉｎＰ部１１、信号処理部１２より構成さ
れ、輝度信号、色度信号を処理する前に親子画面が合成
され、ＰｉｎＰｏｎ時とＰｉｎＰｏｆｆ時とで同一の信
号処理補正がなされていた。As shown in FIG. 2, a conventional video circuit with a PinP function is composed of a PinP section 11 and a signal processing section 12, and a parent / child screen is synthesized before processing a luminance signal and a chromaticity signal. The same signal processing correction has been made at times.
【０００４】[0004]
【考案が解決しようとする課題】このような従来の映像
回路ではＰｉｎＰの有無でも同一の信号処理補正を行っ
ている。In such a conventional video circuit, the same signal processing correction is performed with or without PinP.
【０００５】ＰｉｎＰは画面の１／９を専有するにもか
かわらず、映像信号の処理（ＡＢＬ（自動輝度制限
器）、黒伸長（映像において黒の部分をよりペデスタル
レベルに近づける）レベル、γ補正（映像において中間
輝度を上げる）、白文字補正（映像において白文字部分
をより白く光らせる））の量は、親画面のみの映像があ
る場合（子画面はｏｆｆ）の最適値設定であるためＰｉ
ｎＰｏｎ時には補正量は最適値ではないという問題点を
有する。[0005] Although PinP occupies 1/9 of the screen, it processes video signals (ABL (automatic brightness limiter), expands black (the black portion in the video is more pedestal).
Level, approaching level ) , gamma correction (intermediate in video )
Raise brightness) , white character correction (white character part in video )
The amount of the shine whiter)), since if there is a picture of the main screen only (child screen is the optimal value setting off) Pi
At the time of nPon, there is a problem that the correction amount is not an optimum value.
【０００６】本考案は上記課題を解決し、二画面映像時
にも最適の映像補正を実現可能とするＰｉｎＰ機能付映
像回路を提供することを目的とするものである。[0006] The present invention solves the above-mentioned problems and solves the problem of two-screen video.
It is another object of the present invention to provide a video circuit with a PinP function that can realize optimal video correction .
【０００７】[0007]
【課題を解決するための手段】本考案は輝度信号、色度
信号を処理する信号処理部とその前段で親画面と子画面
の合成を行うＰｉｎＰ部とＰｉｎＰのｏｎ／ｏｆｆの切
換え時に信号処理部の補正量を切換える切換回路部を有
し、ＰｉｎＰのｏｎ／ｏｆｆ時での信号補正量を変える
ものである。According to the present invention, a signal processing section for processing a luminance signal and a chromaticity signal, a PinP section for synthesizing a parent screen and a child screen in a preceding stage thereof, and a signal processing at the time of switching PinP on / off. It has a switching circuit for switching the correction amount of the section, and changes the signal correction amount when PinP is on / off.
【０００８】[0008]
【作用】本考案は、ＰｉｎＰのｏｎ／ｏｆｆ時で、信号
処理補正量を切換えて、ＰｉｎＰの有無での最適の信号
補正を実現させるものである。According to the present invention, the signal processing correction amount is switched at the time of PinP on / off to realize the optimum signal correction with and without PinP.
【０００９】[0009]
【実施例】以下本考案の一実施例について図１を参照に
説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
【００１０】ＰｉｎＰのｏｎ／ｏｆｆの信号を出すマイ
コン部１と、その信号を受けて親画面に子画面を合成す
るＰｉｎＰ部（二画面部）２と、二画面２より出力され
る映像信号を輝度、色度処理する信号処理部３と、信号
の補正量をＰｉｎＰのｏｎ／ｏｆｆで切換える切換え回
路部４と、補正量を決定する外付け定数５より構成さ
れ、ＰｉｎＰｏｎ時とｏｆｆ時で、信号処理部３での各
補正量を変えて、ＰｉｎＰｏｎ時、ｏｆｆ時で最適の補
正量をかけるものである。[0010] A microcomputer unit 1 for outputting a PinP on / off signal, a PinP unit (two-screen unit) 2 for receiving the signal and synthesizing a sub-screen on a main screen, and a video signal output from the two-screen 2 It comprises a signal processing unit 3 for performing luminance and chromaticity processing, a switching circuit unit 4 for switching the correction amount of the signal according to PinP on / off, and an external constant 5 for determining the correction amount. By changing each correction amount in the signal processing unit 3, an optimum correction amount is applied at the time of PinPon and at the time of off.
【００１１】以上実施例から明らかなように、本考案に
よればＰｉｎＰｏｎ時とＰｉｎＰｏｆｆ時とで映像信号
処理の各補正量を変えることができ、従来の親画面のみ
の映像時だけでなく二画面映像時（ＰｉｎＰｏｎ／ｏｆ
ｆの両者）においても最適な映像補正量の画像を提供す
るものである。As is clear from the above embodiments, according to the present invention, each correction amount of the video signal processing can be changed between PinPon and PinPoff, and only the conventional main screen is used.
Not only at the time of two-screen image but also at the time of
f) also provides an image with an optimal video correction amount.
【図１】本考案の一実施例のブロック図FIG. 1 is a block diagram of an embodiment of the present invention.
【図２】従来例のブロック図FIG. 2 is a block diagram of a conventional example.
１ マイコン部 ２ ＰｉｎＰ部 ３ 信号処理部 ４ 切換回路部 ５ 外付け定数 １１ ＰｉｎＰ部 １２ 信号処理部 DESCRIPTION OF SYMBOLS 1 Microcomputer part 2 PinP part 3 Signal processing part 4 Switching circuit part 5 External constant 11 PinP part 12 Signal processing part
Claims (5)
理部と、その前段で親画面と子画面の合成が行われる二
画面部と、親画面と子画面の映像の場合と親画面のみの
映像の場合とで、信号処理部での補正量を切換える切換
回路部とにより構成され、二画面表示時には、二画面無
表示時とは異なる補正量が施された映像を表示すること
を特徴とする二画面機能付映像回路。1. A signal processing unit for processing a luminance signal and a chromaticity signal, a two-screen unit in which a parent screen and a child screen are synthesized in a preceding stage, a case of a video of a parent screen and a child screen, and only a parent screen. in the case of video, it is constituted by a switching circuit portion for switching the correction amount in the signal processing unit, at the time of dual-screen display, Mu dual-screen
Displaying an image with a different correction amount than the one displayed
A video circuit with a two-screen function.
自動輝度制限器における輝度電流検出抵抗値を変えるこ
とを特徴とした請求項１記載の二画面機能付映像回路。2. A means for changing a correction amount of signal processing,
Changing the brightness current detection resistance value in the automatic brightness limiter
2. The video circuit with a two-screen function according to claim 1, wherein:
黒伸長レベル変化量制御抵抗値を変えることを特徴とし
た請求項１記載の二画面機能付映像回路。3. As means for changing the correction amount of signal processing,
It is characterized by changing the control resistance value of black extension level change amount
The video circuit with a two-screen function according to claim 1.
γ補正量制御抵抗値を変えることを特徴とした請求項１
記載の二画面機能付映像回路。4. As means for changing the correction amount of signal processing,
2. The γ correction amount control resistance value is changed.
Image circuit with dual screen function as described.
白文字補正量制御抵抗値を変えることを特徴とした請求
項１記載の二画面機能付映像回路。5. A method of changing a correction amount of signal processing,
2. The video circuit with a two-screen function according to claim 1, wherein the white character correction amount control resistance value is changed .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991090393U JP2597294Y2 (en) | 1991-11-05 | 1991-11-05 | Video circuit with dual screen function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991090393U JP2597294Y2 (en) | 1991-11-05 | 1991-11-05 | Video circuit with dual screen function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0543674U JPH0543674U (en) | 1993-06-11 |
| JP2597294Y2 true JP2597294Y2 (en) | 1999-07-05 |
Family
ID=13997340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991090393U Expired - Lifetime JP2597294Y2 (en) | 1991-11-05 | 1991-11-05 | Video circuit with dual screen function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2597294Y2 (en) |
-
1991
- 1991-11-05 JP JP1991090393U patent/JP2597294Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0543674U (en) | 1993-06-11 |
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