JP2000039862A5 - - Google Patents

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JP2000039862A5
JP2000039862A5 JP1998209315A JP20931598A JP2000039862A5 JP 2000039862 A5 JP2000039862 A5 JP 2000039862A5 JP 1998209315 A JP1998209315 A JP 1998209315A JP 20931598 A JP20931598 A JP 20931598A JP 2000039862 A5 JP2000039862 A5 JP 2000039862A5
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video signal
display device
saturation
image display
signal
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JP1998209315A
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JP2000039862A (en
JP4011743B2 (en
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Priority claimed from JP20931598A external-priority patent/JP4011743B2/en
Publication of JP2000039862A publication Critical patent/JP2000039862A/en
Publication of JP2000039862A5 publication Critical patent/JP2000039862A5/ja
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Claims (12)

画像表示装置において、
入力される映像信号の輝度レベルに応じて色再現範囲が変化する特性を持つ表示デバイスと、
前記映像信号の輝度レベルに関する情報を得るための手段と、
前記得られた映像信号の輝度レベルに関する情報が所定値よりも低いときに、その映像信号の彩度を増加させる手段と、を備え、
前記表示デバイスは、前記彩度が増加された信号に基づき映像を表示することを特徴とする画像表示装置。In an image display device,
A display device having a characteristic of the color reproduction range changes in accordance with the bright level of an input video signal,
Means for obtaining information relating to a luminance level of the video signal;
Means for increasing the saturation of the video signal when the information about the luminance level of the obtained video signal is lower than a predetermined value,
The image display device, wherein the display device displays an image based on the signal with increased saturation . 画像表示装置において、
入力される映像信号の輝度レベルの減少とともに色再現範囲が縮小する特性を持つ表示デバイスと、
前記映像信号の輝度レベルに関する情報を得るための手段と、
前記得られた映像信号の輝度レベルが第１輝度レベルを示すときは、その映像信号の彩度を第１彩度レベルとし、前記検出された前記映像信号の輝度レベルが前記第１輝度レベルよりも低い第２輝度レベルを示すときは、その映像信号の彩度を前記第１彩度レベルよりも高い第２彩度レベルとするように制御する手段と、を備え、
前記表示デバイスは、前記彩度が制御された信号に基づき映像を表示することを特徴とする画像表示装置。 In an image display device,
A display device having a characteristic that the color reproduction range is reduced as the luminance level of the input video signal is reduced;
Means for obtaining information relating to a luminance level of the video signal;
When the luminance level of the obtained video signal indicates the first luminance level, the saturation of the video signal is set to the first saturation level, and the detected luminance level of the video signal is greater than the first luminance level. Means for controlling the saturation of the video signal to be a second saturation level higher than the first saturation level when the second luminance level is low,
The image display apparatus , wherein the display device displays an image based on the signal whose saturation is controlled . 請求項１または２に記載の画像表示装置において、前記表示デバイスが液晶表示素子であることを特徴とする画像表示装置。The image display device according to claim 1 or 2, images Display device characterized in that said display device is a liquid crystal display device. 画像表示装置において、
前記映像信号の輝度レベルに関する情報を得るための手段と、
前記得られた前記映像信号の輝度レベルに関する情報が所定値よりも低いときに、その映像信号の彩度を増加するように制御する手段と、
を備えることを特徴とする画像表示装置。In an image display device,
Means for obtaining information relating to a luminance level of the video signal;
Means for controlling to increase the saturation of the video signal when the information about the luminance level of the obtained video signal is lower than a predetermined value;
The image display apparatus comprising: a. 画像表示装置において、
前記映像信号の輝度レベルに関する情報を得るための手段と、
前記得られた前記映像信号の輝度レベルが第１輝度レベルを示すときは、その映像信号の彩度を第１彩度レベルとし、前記検出された前記映像信号の輝度レベルが前記第１輝度レベルよりも低い第２輝度レベルを示すときは、その映像信号の彩度を前記第１彩度レベルよりも高い第２彩度レベルとするように制御する手段と、
を備えることを特徴とする画像表示装置。 In an image display device,
Means for obtaining information relating to a luminance level of the video signal;
When the luminance level of the obtained video signal indicates the first luminance level, the saturation of the video signal is set to the first saturation level, and the detected luminance level of the video signal is the first luminance level. Means for controlling the saturation of the video signal to be a second saturation level higher than the first saturation level when indicating a lower second luminance level;
The image display apparatus comprising: a. 請求項１乃至５のいずれかに記載の画像表示装置において、前記映像信号の輝度レベルに関する情報として、平均輝度レベルの情報を得るようにしたことを特徴とする画像表示装置。The image display device according to any one of claims 1 to 5, wherein the information relating to the luminance level of the video signal, you characterized in that to obtain the information of the average luminance level images Display device. 請求項６に記載の画像表示装置において、入力映像信号から得られた輝度信号から、前記平均輝度レベルの情報を得るようにしたことを特徴とする画像表示装置。 7. The image display device according to claim 6, wherein the average luminance level information is obtained from a luminance signal obtained from an input video signal . 請求項１乃至７の何れかに記載の画像表示装置において、更に、入力映像信号から色差信号Ｂ−Ｙ及びＲ−Ｙ、並びに輝度信号Ｙを生成する信号生成手段を備え、The image display device according to any one of claims 1 to 7, further comprising signal generation means for generating color difference signals BY and RY and a luminance signal Y from an input video signal,
前記輝度に関する情報を検出するための手段は、前記信号生成手段で生成された前記輝度信号Ｙを用いて該映像信号の輝度レベルに関する情報を得るようにし、  The means for detecting information relating to the luminance obtains information relating to the luminance level of the video signal using the luminance signal Y generated by the signal generating means,
前記彩度を制御する手段は、信号生成手段で生成された前記色差信号Ｂ−Ｙ及びＲ−Ｙの振幅を制御することによって、前記映像信号の彩度を制御することを特徴とする画像表示装置。  The means for controlling the saturation controls the saturation of the video signal by controlling the amplitude of the color difference signals BY and RY generated by the signal generation means. apparatus. 請求項８に記載の画像表示装置において、前記入力映像信号として色信号Ｃ及び輝度信号Ｙが入力され、前記信号生成手段は、色信号Ｃ及び輝度信号Ｙから前記色差信号Ｂ−Ｙ及びＲ−Ｙ、並びに輝度信号Ｙを生成することを特徴とする画像表示装9. The image display device according to claim 8, wherein a color signal C and a luminance signal Y are input as the input video signal, and the signal generation unit receives the color difference signals BY and R- from the color signal C and the luminance signal Y. Y and an image display device characterized by generating a luminance signal Y 置。Place. 請求項８に記載の画像表示装置において、前記入力映像信号としてＲＧＢの３原色信号が入力され、前記信号生成手段は、該３原色信号から前記色差信号Ｂ−Ｙ及びＲ−Ｙ、並びに輝度信号Ｙを生成することを特徴とする画像表示装置。9. The image display device according to claim 8, wherein an RGB three primary color signal is input as the input video signal, and the signal generation unit is configured to output the color difference signals BY and RY and a luminance signal from the three primary color signals. An image display device that generates Y. 請求項１乃至１０の何れかに記載の画像表示装置において、前記彩度を制御する手段は、所望の色相を持つ映像信号について、その映像信号の輝度に関する情報が所定値よりも高い場合に、その映像信号の彩度を制御することを特徴とする画像表示装置。The image display device according to any one of claims 1 to 10, wherein the means for controlling the saturation is a video signal having a desired hue, when information on the luminance of the video signal is higher than a predetermined value. An image display device that controls the saturation of the video signal. 請求項１乃至１０の何れかに記載の画像表示装置において、前記彩度を制御する手段は、所望の色相を持つ映像信号について、その映像信号の輝度に関する情報が所定値よりも高い場合に、その映像信号の彩度を、他の色相を持つ映像信号の彩度とは独立して制御することを特徴とする画像表示装置。The image display device according to any one of claims 1 to 10, wherein the means for controlling the saturation is a video signal having a desired hue, when information on the luminance of the video signal is higher than a predetermined value. An image display device, wherein the saturation of the video signal is controlled independently of the saturation of a video signal having another hue.
JP20931598A 1998-07-24 1998-07-24 Image display device Expired - Fee Related JP4011743B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20931598A JP4011743B2 (en) 1998-07-24 1998-07-24 Image display device

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Application Number Priority Date Filing Date Title
JP20931598A JP4011743B2 (en) 1998-07-24 1998-07-24 Image display device

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JP2005038564A Division JP2005198338A (en) 2005-02-16 2005-02-16 Image display apparatus

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JP2000039862A JP2000039862A (en) 2000-02-08
JP2000039862A5 true JP2000039862A5 (en) 2005-08-25
JP4011743B2 JP4011743B2 (en) 2007-11-21

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3580732B2 (en) * 1999-06-30 2004-10-27 富士通株式会社 Plasma display panel to keep color temperature or color deviation constant
JP3634730B2 (en) * 2000-09-18 2005-03-30 三洋電機株式会社 Tonal correction circuit and hue correction circuit
JP2002132225A (en) * 2000-10-24 2002-05-09 Sharp Corp Video signal corrector and multimedia computer system using the same
KR100806903B1 (en) 2001-09-27 2008-02-22 삼성전자주식회사 Liquid crystal display and method for driving thereof
EP1679678A4 (en) 2003-10-30 2008-10-22 Matsushita Electric Ind Co Ltd Display apparatus, display method, program and recording medium
JP4648071B2 (en) 2005-04-28 2011-03-09 株式会社日立製作所 Video display device and video signal color saturation control method
JP2007241225A (en) * 2005-06-16 2007-09-20 Toshiba Matsushita Display Technology Co Ltd Driving method of display device using organic light emitting element and driving circuit of same
JP5023024B2 (en) 2007-09-06 2012-09-12 ミツミ電機株式会社 Color correction circuit and image display apparatus using the same
KR102083299B1 (en) * 2013-09-02 2020-03-03 엘지전자 주식회사 Display device and luminance control method thereof

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