JP2010518419A - 空間的に変化するバックライトを有するディスプレイのキャリブレーション - Google Patents
空間的に変化するバックライトを有するディスプレイのキャリブレーション Download PDFInfo
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Abstract
【選択図】図1A
Description
本出願は、2007年2月1日出願、「空間的に変化するバックライトを有するディスプレイのキャリブレーション(CALIBRATION OF DISPLAYS HAVING SPATIALLY- VARIABLE BACKLIGHT)」という名称の米国特許仮出願番号60/899,098の利益を主張し、該仮出願の全体を本明細書に組み込む。
本発明は、デジタル画像を表示するディスプレイのキャリブレーションに関する。
図面では、限定するわけではない本発明の実施の形態を図示する。
・各ピクセルの赤、緑、青(RGB)の色の値、
・YIQ値、ここで、各ピクセルは、輝度と称される値(Y)とクロミナンスと称される一組の値(I,Q)により表される、
・CMYあるいはCMYK値、
・YUV値、
・YCbCr値、
・HSV値、あるいは
・HSL値
画像データ11は、適切などんな画像データフォーマットを有してもよい。
・発光体コントロール信号と変調器コントロール信号を提供するコントローラで収集光信号を受信する代わりに、別体のキャリブレーションコントローラを備えて、収集光信号を受信し、適用する補正を決定してもよい。
Claims (34)
- コントローラに接続される一連の個々に調整できる光源を備えるディスプレイをキャリブレーションする方法であって、前記個々に調整できる光源は画像データに応じて前記コントローラのコントロールで電流を供給されると発光するようになされ:
前記複数の光源の1つの光源から発光された光の少なくとも一部を収集する工程と;
前記収集光を表す収集光信号を受信する工程と;
前記収集光信号を期待光特性と比較する工程と;
前記比較により前記収集光の強度が前記期待光特性により示される期待強度と異なっていることが示されると、前記1つの光源に強度補正を決定し、前記強度補正は前記コントローラにより前記1つの光源に供給される電流パルスのデューティーサイクルを変える指示を含む、工程とを備える;
方法。 - 前記収集光信号を受信する工程は、前記複数の光源のうちの少なくとも1つの別の光源からのフィードバック信号を受信する工程を含む;
請求項1の方法。 - 前記少なくとも1つの別の光源は少なくとも1つの発光していない光源を含み、
前記フィードバック信号を受信する工程は、前記少なくとも1つの別の光源に接続された少なくとも1つの回路の電流を計測する工程を含む;
請求項2の方法。 - 前記フィードバック信号は、前記1つの光源を取り囲む領域に配置された複数の近くの光源から受信する;
請求項2の方法。 - 前記比較により前記収集光の強度が前記期待強度より小さいことが示されると:
前記画像データにより規定される画像を表示するときに前記1つの光源に供給される前記パルスのデューティーサイクルを増加することにより前記強度補正を利用する工程を含む;
請求項1の方法。 - 前記比較により前記収集光の強度が前記期待強度より大きいことが示されると:
前記画像データにより規定される画像を表示するときに前記1つの光源に供給される前記パルスのデューティーサイクルを減少することにより前記強度補正を利用する工程を含む;
請求項1の方法。 - 前記コントローラによりアクセス可能な電子メモリに前記強度補正を保存する工程を備える;
請求項1の方法。 - 前記1つの光源から発光された光の少なくとも一部を収集する工程は、画像データの1フレームの光を収集する工程を含み、
画像データの次のフレームを表示するときは、電力の次のパルスのデューティーサイクルを変えることによって前記強度補正を利用する工程をさらに備える;
請求項1の方法。 - 1フレームの間に前記複数の光源のそれぞれをキャリブレーションする工程を備える;
請求項8の方法。 - 1フレームの間に前記複数の光源の部分集合をキャリブレーションする工程を備える;
請求項8の方法。 - 複数のフレームにわたって前記複数の光源のそれぞれをキャリブレーションする工程を備える;
請求項8の方法。 - 前記複数の光源のそれぞれを周期的にキャリブレーションする工程を備える;
請求項8の方法。 - 前記コントローラが受信するキャリブレーションコマンドに応じて前記複数の光源の1つあるいは複数をキャリブレーションする工程を備える;
請求項8の方法。 - 前記ディスプレイからのデータを計測し、前記計測データが所定の閾値を超えるときに前記複数の光源の1つあるいは複数をキャリブレーションする工程を備える;
請求項8の方法。 - 前記計測データは温度データを含む;
請求項14の方法。 - 前記強度補正は、前記複数の光源の少なくとも1つの近くの光源で発光した光の強度を調整する指示を含む;
請求項1の方法。 - 前記強度補正は、2つ以上の近くの光源の強度を異なった量だけ調整する指示を含む;
請求項16の方法。 - 前記2つ以上の近くの光源で発光した光の強度を調整する指示は、重み関数により前記2つ以上の近くの光源の強度を差分的に調整することを含む;
請求項17の方法。 - 前記重み関数は、前記近くの光源の期待強度に基づく;
請求項18の方法。 - 前記重み関数は、前記近くの光源の期待強度の前記1つの光源の所望の強度に対する比較に基づく;
請求項18の方法。 - 前記比較により前記収集光の色温度が前記期待光特性により示される期待光温度と異なることが示されると、前記1つの光源に色補正を決定する工程を備える;
請求項1の方法。 - 前記色補正は、前記1つの光源に電力を供給する前の画像データに応じて前記コントローラにより決定される色補正を調整する指示を含む;
請求項21の方法。 - 前記スクリーンは、複数の個々に調整できるピクセル要素を備える変調器を備え、前記複数の個々に調整できるピクセル要素のそれぞれは前記コントローラのコントロール下で調整できる光の量とスペクトルとを通過させ、
前記色補正は、前記1つの光源からの光が入射する前記複数の個々に調整できるピクセル要素を通過した光のスペクトルを調整する指示を含む;
請求項21の方法。 - 前記画像データに規定される画像を表示するときに前記色補正を利用する工程を含む;
請求項21の方法。 - 前記コントローラがアクセス可能な電子メモリに前記色補正を保存する工程を含む;
請求項21の方法。 - コントローラに接続される一連の個々に調整できる光源で背後から光を当てられるスクリーンを備えるディスプレイをキャリブレーションする方法であって、前記個々に調整できる光源のそれぞれは画像データに応じて前記コントローラのコントロールで電力を供給されると発光するようになされ:
前記複数の光源の1つの光源から発光された光の少なくとも一部を収集する工程と;
前記収集光を表す収集光信号を受信する工程と;
前記収集光信号を期待光特性と比較する工程と;
前記比較により前記収集光の色温度が前記期待光特性により示される期待色温度と異なっていることが示されると、前記1つの光源に色補正を決定する工程を備える;
方法。 - 前記スクリーンは、複数の個々に調整できるピクセル要素を備える変調器を備え、前記複数の個々に調整できるピクセル要素のそれぞれは前記コントローラのコントロール下で調整できる光の量とスペクトルとを通過させ、
前記色補正は、前記1つの光源からの光が入射する前記複数の個々に調整できるピクセル要素を通過した光のスペクトルを調整する指示を含む;
請求項26の方法。 - 前記画像データに規定される画像を表示するときに前記色補正を利用する工程を含む;
請求項26の方法。 - 前記コントローラがアクセス可能な電子メモリに前記色補正を保存する工程を含む;
請求項26の方法。 - コントローラに接続される一連の個々に調整できるLEDを備えるディスプレイをキャリブレーションする方法であって、前記個々に調整できるLEDのそれぞれは画像データに応じて前記コントローラのコントロールで電力を供給されると発光するようになされ:
前記複数のLEDの1つのLEDに電力を供給する工程と;
前記1つのLEDから発光した光が入射する少なくとも1つの他のLEDに誘導された電流を計測する工程と;
前記計測された電流を期待電流と比較する工程と;
前記比較により前記1つのLEDから発光した光の強度が前記1つのLEDから発光した光の期待強度と異なっていることが示されると、前記1つのLEDに強度補正を決定する工程とを備える;
方法。 - 前記計測された電流を期待電流と比較する工程は:
前記計測された電流から前記1つのLEDで発光した光の計測された強度を決定する工程と;
前記1つのLEDで発光した光の期待強度から期待電流を決定する工程と;
前記1つのLEDで発光した光の前記計測された強度を前記1つのLEDで発光した光の期待強度と比較する工程とを備える;
請求項30の方法。 - 前記画像データに規定される画像を表示するときに前記強度補正を利用する工程を含む;
請求項30の方法。 - 前記コントローラがアクセス可能な電子メモリに前記強度補正を保存する工程を含む;
請求項30の方法。 - コントローラに接続される一連の個々に調整できる光源で背後から光を当てられる変調器を備えるディスプレイをキャリブレーションする方法であって、前記個々に調整できる光源は画像データに応じて前記コントローラのコントロールで電流を供給されると発光するようになされ:
前記複数の光源の1つの光源から発光された光の少なくとも一部を収集する工程と;
前記収集光を表す収集光信号を受信する工程と;
前記収集光信号を期待光特性と比較する工程と;
前記比較により前記収集光の強度が前記期待光特性により示される期待強度と異なっていることが示されると、前記1つの光源に強度補正を決定し、前記強度補正は、少なくとも一つの近くの光源の強度を調整して前記変調器の対応する部分の伝達特性を調整する指示を含む、工程を備える;
方法。
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EP2860721A3 (en) | 2015-07-29 |
KR101126094B1 (ko) | 2012-03-21 |
US8471807B2 (en) | 2013-06-25 |
MX2009008192A (es) | 2009-08-12 |
EP2860721B1 (en) | 2021-09-01 |
WO2008092276A1 (en) | 2008-08-07 |
KR20090104913A (ko) | 2009-10-06 |
US20100002026A1 (en) | 2010-01-07 |
JP5002656B2 (ja) | 2012-08-15 |
EP2118880A4 (en) | 2010-08-25 |
ES2893327T3 (es) | 2022-02-08 |
EP2118880A1 (en) | 2009-11-18 |
CN101632113B (zh) | 2012-10-03 |
CN101632113A (zh) | 2010-01-20 |
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