JP2017121073A - 画像センサにおける画素ビニング - Google Patents
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Abstract
Description
1002 第1のデジタル対角加算信号を記憶
1004 対角的に隣接する画素からの電圧信号を合成し、これを読み出して、第2のデジタル対角加算信号を生成
1006 第1及び第2のデジタル対角加算信号を共に加算
1008 電荷を加算して検知領域から読み出した後に、電圧信号を合成して画素配列から読み出すことにより、画素を直交方向にビニング
Claims (26)
- 複数の画素を含む画素アレイを有する画像センサ内の電荷をビニングする方法であって、
第1の対角方向に沿って位置する2又はそれ以上の画素内の電荷を加算し、該加算された電荷を前記画素アレイから読み出すことによって第1の対角加算信号を生成するステップと、
前記第1の対角方向に沿って位置する2又はそれ以上の画素からの信号を平均化することによって第2の対角加算信号を生成するステップと、
を含むことを特徴とする方法。 - 前記2又はそれ以上の画素内の電荷は、1つの色平面内の電荷を含む、
ことを特徴とする請求項1に記載の方法。 - 前記2又はそれ以上の画素内の電荷は、異なる色平面内の電荷を含む、
ことを特徴とする請求項1に記載の方法。 - 前記異なる色平面は、Bayerのカラーフィルタ配列に関連する緑色平面を含む、
ことを特徴とする請求項3に記載の方法。 - 前記2又はそれ以上の画素のうちの少なくとも1つの画素内の電荷は、全整色性フィルタ素子に関連する画素から読み出された電荷を含む、
ことを特徴とする請求項1に記載の方法。 - 前記2又はそれ以上の画素からの少なくとも1つの信号は、全整色性フィルタ素子に関連する画素から読み出された電荷を表す信号を含む、
ことを特徴とする請求項1に記載の方法。 - 前記第1及び第2の対角加算信号を第1及び第2のデジタル対角加算信号に変換するステップと、
前記第1及び第2のデジタル対角加算信号を共に合成するステップと、
をさらに含むことを特徴とする請求項1に記載の方法。 - 第1の直交方向に沿って位置する画素内の電荷を加算して、該加算された電荷を表す信号を生成するステップと、
前記加算された電荷を表す2又はそれ以上の信号を平均化するステップと、
前記平均化された信号を前記画素アレイから読み出すステップと、
をさらに含むことを特徴とする請求項1に記載の方法。 - 前記第1の対角方向に沿って位置する2又はそれ以上の画素内の電荷を加算するステップは、第1の対角方向に沿って隣接して位置する2つの画素内の電荷を加算するステップを含む、
ことを特徴とする請求項1に記載の方法。 - 前記第1の対角方向に沿って隣接して位置する2つの画素内の電荷を加算するステップは、第1の対角方向に沿った隣接する行における2つの画素内の電荷を加算するステップを含む、
ことを特徴とする請求項9に記載の方法。 - 前記合成された第1及び第2のデジタル対角加算信号を用いて画像を構成するステップをさらに含む、
ことを特徴とする請求項7に記載の方法。 - 異なる第2の対角方向に沿って位置する2又はそれ以上の画素内の電荷を加算し、該加算された電荷を前記画素アレイから読み出すことによって第3の対角加算信号を生成するステップと、
前記第2の対角方向に沿って位置する2又はそれ以上の画素からの信号を平均化することによって第4の対角加算信号を生成するステップと、
をさらに含むことを特徴とする請求項1に記載の方法。 - 前記第1、第2、第3及び第4の対角加算信号を用いて画像を構成するステップをさらに含む、
ことを特徴とする請求項12に記載の方法。 - 画素アレイ内に複数の画素を含む画像センサ内の電荷をビニングする方法であって、
対角的に隣接する第1の画素対における電荷を加算し、該加算された電荷を前記画素アレイから読み出すことによって第1の対角加算信号を生成するステップと、
対角的に隣接する第2の画素対から出力された電圧信号を合成し、該合成された電圧信号を前記画素アレイから読み出すことによって第2の対角加算信号を生成するステップと、
を含み、前記対角的に隣接する第1及び第2の画素対は、前記画素アレイ内で第1の対角方向に沿って対角的に隣接する、
ことを特徴とする方法。 - 前記対角的に隣接する第1の画素対における電荷は、単一の色平面に関連する電荷を含み、前記対角的に隣接する第2の画素対における電圧信号は、単一の色平面に関連する電圧信号を含む、
ことを特徴とする請求項14に記載の方法。 - 前記対角的に隣接する第1の画素対における電荷は、異なる色平面に関連する電荷を含み、前記対角的に隣接する第2の画素対における電圧信号は、異なる色平面に関連する電圧信号を含む、
ことを特徴とする請求項14に記載の方法。 - 前記異なる色平面は、Bayerのカラーフィルタ配列内の第1の緑色平面及び異なる第2の緑色平面を含む、
ことを特徴とする請求項16に記載の方法。 - 前記対角的に隣接する第1の画素対の少なくとも一方における電荷は、全整色性フィルタ素子に関連する画素から読み出された電荷を含む、
ことを特徴とする請求項14に記載の方法。 - 前記対角的に隣接する第2の画素対からの少なくとも一方の電圧信号は、全整色性フィルタ素子に関連する画素から読み出された電荷を表す電圧信号を含む、
ことを特徴とする請求項14に記載の方法。 - 前記第1及び第2の対角加算信号を第1及び第2のデジタル対角加算信号に変換するステップと、
前記第1及び第2のデジタル対角加算信号を合成するステップと、
をさらに含むことを特徴とする請求項14に記載の方法。 - 第1の直交方向の第1の画素対における電荷を加算して第1の電圧信号を生成するステップと、
第2の直交方向の第2の画素対における電荷を加算して第2の電圧信号を生成するステップと、
前記第1及び第2の電圧信号を、2つの出力線を共に電気的に接続することによって形成された出力線上で合成するステップと、
をさらに含むことを特徴とする請求項20に記載の方法。 - 前記合成された第1及び第2の電圧信号を、該合成された第1及び第2の電圧信号を表すデジタル信号に変換するステップと、
前記加算された第1及び第2のデジタル対角加算信号と、前記合成された電圧信号を表すデジタル信号とを用いて画像を構成するステップと、
をさらに含むことを特徴とする請求項21に記載の方法。 - 対角的に隣接する第3の画素対における電荷を加算し、該加算された電荷を前記画素アレイから読み出すことによって第3の対角加算信号を生成するステップと、
対角的に隣接する第4の画素対から出力された電圧信号を合成し、該合成された電圧信号を前記画素アレイから読み出すことによって第4の対角加算信号を生成するステップと、
をさらに含み、前記対角的に隣接する第3及び第4の画素対は、前記画素アレイ内で異なる第2の対角方向に沿って対角的に隣接する、
ことを特徴とする請求項14に記載の方法。 - 前記第1、第2、第3及び第4の対角加算信号を用いて画像を構成するステップをさらに含む、
ことを特徴とする請求項23に記載の方法。 - 画像取込装置であって、
異なる検知領域に各々が動作可能に接続された画素グループに分割された複数の画素と、
各検知領域及び異なる出力線に動作可能に接続された読み出し回路と、
第1の出力線の組及び第2の出力線の組に動作可能に接続された第1のスイッチと、
グループ内の2又はそれ以上の画素が、それぞれの検知領域上で電荷を加算することを選択的に可能にし、それぞれの前記読み出し回路が、前記加算された電荷を前記検知領域から読み出すことを可能にするように適合された、前記複数の画素に動作可能に接続された処理装置と、
を備え、前記処理装置は、2つのグループ内の2又はそれ以上の画素が、それぞれの検知領域に電荷を転送することを選択的に可能にし、前記それぞれの読み出し回路が、前記それぞれの検知領域から前記電荷を読み出して電圧信号を生成することを可能にし、前記スイッチが、前記第1の出力線の組における出力線と、前記第2の出力線の組における出力線とを共に接続して前記電圧信号を合成することを選択的に可能にするように適合される、
ことを特徴とする画像取込装置。 - 各々がそれぞれの出力線の組に動作可能に接続された第2のスイッチと、
各第2のスイッチに動作可能に接続されたアナログデジタルコンバータと、
をさらに備えることを特徴とする請求項25に記載の画像取込装置。
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