JPH04286492A - Television receiver - Google Patents
Television receiverInfo
- Publication number
- JPH04286492A JPH04286492A JP7418591A JP7418591A JPH04286492A JP H04286492 A JPH04286492 A JP H04286492A JP 7418591 A JP7418591 A JP 7418591A JP 7418591 A JP7418591 A JP 7418591A JP H04286492 A JPH04286492 A JP H04286492A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- viewer
- display element
- ram
- video
- 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
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 2
- 101150065817 ROM2 gene Proteins 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Transforming Electric Information Into Light Information (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は視聴者の好みに応じた画
像調整を可能としたテレビジョン受像機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver capable of adjusting images according to the viewer's preferences.
【０００２】0002
【従来の技術】従来、テレビジョン受像機は、特開平２
−５５４９２号公報に開示されているように、映像信号
の逆ガンマ補正量をＲ，Ｇ，Ｂそれぞれ独立に調整する
ことにより、それぞれ所望の補正量とし、輝度に関係な
く一様なホワイトバランスを得て、鮮明で自然な画像を
表示している。ところで、従来、例えば液晶表示素子な
どを用いたテレビジョン受像機では、映像、色あい、色
の濃さ、黒レベル、画質などブラウン管式テレビジョン
受像機と同じ項目の分けかたによる画像調整が行われて
いた。[Prior Art] Conventionally, television receivers were
As disclosed in Publication No. 55492, by adjusting the inverse gamma correction amount of the video signal for R, G, and B independently, the desired correction amount can be obtained for each, and a uniform white balance can be achieved regardless of the brightness. It displays clear and natural images. By the way, conventionally, in television receivers using liquid crystal display elements, for example, image adjustment has been performed using the same classification of items as in cathode ray tube television receivers, such as image, color tone, color saturation, black level, and image quality. I was worried.
【０００３】0003
【発明が解決しようとする課題】しかしながら、このよ
うな従来の画像調整においては、ブラウン管式テレビジ
ョン受像機とは異なる液晶テレビジョン受像機の液晶表
示素子の表示特性を十分に引き出すことができず、結果
的に視聴者の好みに応じた画像調整ができないという問
題点があった。そこで、本発明は上記事情を考慮してな
されたもので、その目的とするところは、表示素子の表
示特性を十分に引き出すことによって、視聴者の好みに
応じた画像調整を可能としたテレビジョン受像機を提供
することにある。[Problem to be Solved by the Invention] However, in such conventional image adjustment, it is not possible to fully bring out the display characteristics of the liquid crystal display element of a liquid crystal television receiver, which is different from a cathode ray tube television receiver. As a result, there was a problem in that it was not possible to adjust the image according to the viewer's preferences. Therefore, the present invention has been made in consideration of the above circumstances, and its purpose is to provide a television that enables image adjustment according to the viewer's preference by fully bringing out the display characteristics of the display element. The purpose is to provide a television receiver.
【０００４】0004
【課題を解決するための手段】上記の目的を達成するた
めに、本発明に係るテレビジョン受像機にあっては、表
示素子の表示特性データを記憶した第１の記憶手段と、
ユーザーコントロールに基づいて映像信号の複数の輝度
レベルを領域ごとに設定した振幅特性を記憶する第２の
記憶手段と、これら第１，第２の記憶手段を切換える切
換手段と、上記映像信号の輝度レベルに応じて利得の制
御可能なゲインコントロール回路とを備えたことを特徴
とする。[Means for Solving the Problems] In order to achieve the above object, the television receiver according to the present invention includes a first storage means storing display characteristic data of a display element;
a second storage means for storing amplitude characteristics in which a plurality of brightness levels of the video signal are set for each area based on user control; a switching means for switching between the first and second storage means; and a brightness level of the video signal. The present invention is characterized by comprising a gain control circuit that can control the gain according to the level.
【０００５】[0005]
【作用】上記の構成を有する本発明においては、ゲイン
コントロール回路で映像信号の輝度レベルに応じて映像
信号の振幅が制御される。したがって、表示素子の表示
特性に最も近似した振幅特性によってゲインコントロー
ルされた映像信号は送信されてくる原画像を忠実に再現
するだけでなく、視聴者の好みに応じた画像調整が可能
となる。[Operation] In the present invention having the above structure, the gain control circuit controls the amplitude of the video signal in accordance with the luminance level of the video signal. Therefore, the video signal whose gain is controlled by the amplitude characteristic that most closely approximates the display characteristic of the display element not only faithfully reproduces the transmitted original image, but also enables image adjustment according to the viewer's preference.
【０００６】[0006]
【実施例】以下、本発明の実施例を図１および図２に基
づいて説明する。図１は本発明に係るテレビジョン受像
機の一実施例を示し、この実施例では表示素子として液
晶表示素子を用いている。図１において、ゲインコント
ロール回路１には、映像入力信号ａとゲインコントロー
ル信号ｂとが供給され、映像入力信号ａの輝度レベルと
ゲインコントロール信号ｂに応じてゲインコントロール
された映像出力信号ｃを得る。Embodiments Hereinafter, embodiments of the present invention will be explained based on FIGS. 1 and 2. FIG. 1 shows an embodiment of a television receiver according to the present invention, in which a liquid crystal display element is used as a display element. In FIG. 1, a gain control circuit 1 is supplied with a video input signal a and a gain control signal b, and obtains a video output signal c whose gain is controlled according to the brightness level of the video input signal a and the gain control signal b. .
【０００７】一方、液晶表示素子の表示特性データに最
も近似した振幅特性は、液晶表示素子の表示特性データ
により工場出荷初期値として第１の記憶手段であるＲＯ
Ｍ（リード・オンリー・メモリー）２に記憶しておく。
視聴者の好みに応じた画像調整による振幅特性、すなわ
ちユーザーコントロールに基づいて映像信号の複数の輝
度レベルを領域ごとに設定した振幅特性は第２の記憶手
段としてのＲＡＭ（ランダム・アクセス・メモリー）３
に記憶し、ＲＯＭ２とＲＡＭ３からの信号は切換手段と
してのＲＯＭ／ＲＡＭ切換回路４によって切換え可能で
ある。そして、データ補間回路５は視聴者の行った画像
調整に基づいて振幅特性の映像の暗い部分、中間調の部
分、明るい部分の間をデータ補間する。On the other hand, the amplitude characteristic that is most similar to the display characteristic data of the liquid crystal display element is stored in the first storage means RO as a factory default value based on the display characteristic data of the liquid crystal display element.
Store it in M (read only memory) 2. The amplitude characteristics by adjusting the image according to the viewer's preferences, that is, the amplitude characteristics in which multiple brightness levels of the video signal are set for each area based on user control, are stored in RAM (Random Access Memory) as a second storage means. 3
The signals from the ROM2 and RAM3 can be switched by a ROM/RAM switching circuit 4 as switching means. Then, the data interpolation circuit 5 interpolates data between the dark part, the halftone part, and the bright part of the video of the amplitude characteristic based on the image adjustment made by the viewer.
【０００８】ここで、視聴者の行う画像調整の方法は、
図２に示すように振幅特性を大まかに分けて映像の暗い
部分、中間調の部分、明るい部分というようにし、それ
ぞれをより暗い方向に近づけたり、またはより明るい方
向に近づけるというようにして調整が容易なようにする
。上記の構成において、視聴者の行った画像調整に基づ
いてデータ補間回路５は振幅特性の映像の暗い部分、中
間調の部分、明るい部分の間をデータ補間し、このデー
タをＲＡＭ３に記憶し、ＲＯＭ／ＲＡＭ切換回路４によ
ってＲＡＭ３を選択すれば、視聴者の行った画像調整に
よる画像が表示される。Here, the image adjustment method performed by the viewer is as follows:
As shown in Figure 2, the amplitude characteristics can be roughly divided into dark areas, midtone areas, and bright areas of the image, and adjustments can be made by moving each area closer to the darker side or closer to the brighter side. Make it easy. In the above configuration, the data interpolation circuit 5 interpolates data between the dark part, the halftone part, and the bright part of the video of the amplitude characteristic based on the image adjustment made by the viewer, and stores this data in the RAM 3. When the RAM 3 is selected by the ROM/RAM switching circuit 4, an image adjusted by the viewer is displayed.
【０００９】このように本実施例によれば、映像信号の
輝度レベルに応じて利得の制御可能なゲインコントロー
ル回路１によって液晶表示素子の表示特性を十分に引き
出し、視聴者の好みに応じた画像調整が可能となる。な
お、本発明では、上記実施例のように液晶表示素子を使
用した液晶テレビジョン受像機に限らず、表示素子特有
の表示特性に応じてゲインコントロールをすることによ
って、ＥＬ表示素子、プラズマ表示素子など、あらゆる
表示素子の映像信号処理として応用可能である。As described above, according to the present embodiment, the display characteristics of the liquid crystal display element are fully brought out by the gain control circuit 1 whose gain can be controlled according to the brightness level of the video signal, and an image according to the viewer's preference can be produced. Adjustment is possible. Note that the present invention is not limited to a liquid crystal television receiver using a liquid crystal display element as in the above embodiment, but can also be applied to an EL display element or a plasma display element by controlling the gain according to the display characteristics specific to the display element. It can be applied to video signal processing for all kinds of display elements.
【００１０】0010
【発明の効果】以上説明したように、本発明に係るテレ
ビジョン受像機によれば、映像信号の輝度レベルに応じ
て利得の制御可能なゲインコントロール回路によって表
示素子の表示特性を十分に引き出し、視聴者の好みに応
じた画像調整が可能となる。As explained above, according to the television receiver of the present invention, the display characteristics of the display element can be fully brought out by the gain control circuit whose gain can be controlled according to the brightness level of the video signal. Image adjustments can be made according to the viewer's preferences.
【図１】本発明に係るテレビジョン受像機の一実施例を
示すブロック図である。FIG. 1 is a block diagram showing an embodiment of a television receiver according to the present invention.
【図２】同実施例の振幅特性を示すグラフ図である。FIG. 2 is a graph diagram showing the amplitude characteristics of the same example.
１ ゲインコントロール回路
２ ＲＯＭ（第１の記憶手段）
３ ＲＡＭ（第２の記憶手段）
４ ＲＯＭ／ＲＡＭ切換回路（切換手段）５ デー
タ補間回路1 Gain control circuit 2 ROM (first storage means) 3 RAM (second storage means) 4 ROM/RAM switching circuit (switching means) 5 Data interpolation circuit
Claims (1)
第１の記憶手段と、ユーザーコントロールに基づいて映
像信号の複数の輝度レベルを領域ごとに設定した振幅特
性を記憶する第２の記憶手段と、これら第１，第２の記
憶手段を切換える切換手段と、上記映像信号の輝度レベ
ルに応じて利得の制御可能なゲインコントロール回路と
を備えたことを特徴とするテレビジョン受像機。1. A first storage means that stores display characteristic data of a display element; and a second storage means that stores amplitude characteristics in which a plurality of brightness levels of a video signal are set for each region based on user control. A television receiver comprising: switching means for switching between the first and second storage means; and a gain control circuit capable of controlling gain according to the brightness level of the video signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7418591A JPH04286492A (en) | 1991-03-15 | 1991-03-15 | Television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7418591A JPH04286492A (en) | 1991-03-15 | 1991-03-15 | Television receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04286492A true JPH04286492A (en) | 1992-10-12 |
Family
ID=13539861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7418591A Pending JPH04286492A (en) | 1991-03-15 | 1991-03-15 | Television receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04286492A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06261335A (en) * | 1993-03-02 | 1994-09-16 | Fujitsu General Ltd | Color display device |
| US5497190A (en) * | 1993-07-07 | 1996-03-05 | Matsushita Electric Industrial Co., Ltd. | Digital to analog converter arithmetic circuit |
| KR100231412B1 (en) * | 1996-12-05 | 1999-11-15 | 전주범 | Picture status control method of a television |
| KR100392452B1 (en) * | 2001-11-27 | 2003-07-23 | 삼성전자주식회사 | display apparatus and display method thereof |
| KR20040044244A (en) * | 2002-11-20 | 2004-05-28 | 삼성전자주식회사 | Monitor with liquid crystal device |
| DE102006008777A1 (en) * | 2006-02-24 | 2007-08-30 | Institut für Rundfunktechnik GmbH | Ballast for image reproduction device has controllable switching function, which interrupts forwarding of address data or clock signals of picture signal source at semiconductor data memory of display |
-
1991
- 1991-03-15 JP JP7418591A patent/JPH04286492A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06261335A (en) * | 1993-03-02 | 1994-09-16 | Fujitsu General Ltd | Color display device |
| US5497190A (en) * | 1993-07-07 | 1996-03-05 | Matsushita Electric Industrial Co., Ltd. | Digital to analog converter arithmetic circuit |
| KR100231412B1 (en) * | 1996-12-05 | 1999-11-15 | 전주범 | Picture status control method of a television |
| KR100392452B1 (en) * | 2001-11-27 | 2003-07-23 | 삼성전자주식회사 | display apparatus and display method thereof |
| KR20040044244A (en) * | 2002-11-20 | 2004-05-28 | 삼성전자주식회사 | Monitor with liquid crystal device |
| DE102006008777A1 (en) * | 2006-02-24 | 2007-08-30 | Institut für Rundfunktechnik GmbH | Ballast for image reproduction device has controllable switching function, which interrupts forwarding of address data or clock signals of picture signal source at semiconductor data memory of display |
| DE102006008777B4 (en) * | 2006-02-24 | 2008-02-14 | Institut für Rundfunktechnik GmbH | Ballast for a picture display device |
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