TW574824B - Stereoscopic picture separation for phosphor lag reduction in PDP - Google Patents
Stereoscopic picture separation for phosphor lag reduction in PDP Download PDFInfo
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2007—Display of intermediate tones
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- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
- G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
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- H04N13/194—Transmission of image signals
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- H04N13/20—Image signal generators
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- H04N13/239—Image signal generators using stereoscopic image cameras using two 2D image sensors having a relative position equal to or related to the interocular distance
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- H04N13/286—Image signal generators having separate monoscopic and stereoscopic modes
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- H—ELECTRICITY
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Description
574824 五、發明說明(1) 本發明係關於顯示設備上立體顯示用視頻(圖)框處理 方法和裝置,尤指具有複數發光元件之電漿顯示面板 (PDP)。在各情況下,其中之一或以上屬於視頻框之圖素 ,其中各視頻框含有左、右圖像,而視頻框的時間期限分 成複數副場,其間可以相當於用在亮度控制的副場電碼字 之小脈波,為光射/發光而活化發光元件。 背景 從人員視覺系統(HVS)的3D感受,是基於眼睛並列定 位。各眼從稍微不同角度觀看同樣面積。二分開影像送至 腦部,按照第1圖處理。當二影像同時到達腦後部,即聯 合成一圖像。心智把二影像組合,配上相似性,加上小異 ,隶後捕捉到二維度(3 D)立體圖像。以立體視像,η v s所 見物象一如三度空間維度(寬度、高度、深度)中 , 亚增加深,的感受,使立體視像豐富而特殊。此、立體 圖像會提局腦中銳度的印象。 <署i r ?科技中’3D影像是借助二部錄影照相機,炎列 δ又置類似人眼而產生。主要是基於複雜軟體之並:, 口 蹤(二效光的傳播)產生人為立i圖像。说 J :為左、,像。若左、右影像是按照第2圖從 影Πί: ’ 前面的同步化快門系統,容許右
π二二f右眼,反之疋左眼,即可觀看到立體視 快fE I,在與顯示器配合的眼鏡内,不是同時而 二 為眼;;蔽一眼然後另一眼,與影像顯;同步。 ,、、、琢序」 此法避免彩色立體圖觀賞時造成#
574824 五、發明說明(2) 視網膜敵對(另一法是基於與二色圖像關聯的二色眼鏡-- _ 各色與一眼有關,造成單色立體視像,此極古老方法可追 溯至1 858年)。然而,此法會引起其他不適,例如引進二 影像間之時間視差,或可能由於磷殘跡,在影像間可能有 「幻影」。 大多數眼鏡快門系統使用LCD,以偏光作業。目前使 用L C D的眼鏡具有良好切換速度,和替代性透鏡的合理消 光。如今市面上可得之電光偏光快門,只透射30%不偏極 輸入光(而非完美偏光鏡的50%),如此會降低許多影像亮 度。有些眼鏡快門是接線到監視器,其餘則利用紅外線以 無線控制。 在電漿螢幕上顯示立體圖像,在設計選擇上並非簡單 事,因為每圖框週期需要顯示二不同圖像,若不願接受大 幅降低圖框重複頻率,則對此技術是一項新的挑戰。 PDP利用矩陣陣列的放電電池,只能「開」或「關」 。一如灰度是由光射的類比控制加以表現的CRT或LCD, PDP是利用調變每圖框的光脈波數(持續脈波)控制灰度。 眼睛可在相當於眼睛時間反應的期間,整合此時間調變。 為進行灰度績效,電漿顯示常分成副亮光期,稱為副場, 各相當於輸入視頻圖像資料之一位光。例如,若提供8位 元發光位階,在此情況下,各位階可由下列位元組合表 示: 1-2-4-8-1 6-32-64- 128 為實施此項以PDP技術寫碼,圖框週期可分成8亮光週
574824 五、發明說明(3) 期(稱為副場),各相當於1位元。位元π 2 π的光脈波數為位 元η 1π之倍數,依此類推。以此8副場,可經由副場組合建 立2 5 6灰度。 為澄清起見,副場可定義如下:副場是以電池接續進 行下述的時間週期: 1. 書寫/定址期,此時電池不是帶入高電壓的激發狀 態,便是留在低電壓的中性狀態; 2. 持續期,此時以短電壓脈波進行氣體放電,引起相 對應的短期亮光脈波。當然,只有先前已激發的電 池會產生亮光脈波。在中性狀態的電池内不會有氣 體放電。 3. 抹除期,此時電池的電荷淬滅。 在某些專用電漿驅動計劃中(Pioneer倡議的漸進寫碼 ),定址或抹除期未出現在各副場内。反而是在一組副場 之前或之後,進行選擇性定址/抹除。 實施立體顯示的簡單方法,是基於使用LCD快門眼鏡 ,以及副場分成左(L )、右(R )副場組,與LCD快門眼鏡的 啟、閉同步。此法又一優點是,改變副場編碼過程,即容 易產生同樣顯示2 D和3 D圖像。 為了以下說明,假設PDP可以60赫模式(16. 67ms框週) 顯示每框2 0副場。此外,又假設快門眼鏡的暫時反應需時 一定址週期。顯示,此等數值全部只當例子。 第3圖表示按照上述假設的光射計劃。例如對各左、 右影像指定1 0個副場。副場上面數字表示相對副場權值。
574824 五、發明說明(4) 副場權值總和等 -- 頻技術中,輪入RGB資粗ΐ 可能最高的8位元值。在視 (SDTV)。副場的—貝枓子疋8位元數,足供標準TV品質 其遠較抹除期A 址期如第3圖所示,但未見抹除期,因 品質俱佳。為小。以10副場電碼而言,左、右影像二者 發明概 看的體左眼看的“"昜’和純由右眼 材料顯示遲滯效庫月b :如1"匕’因為綠色和紅色發光 ,而右眼用快門關閉時,左眼也會接受 於a =接二,X,部份。反之,左眼用快門關閉時,也會 :2樣情況。磷遲滞效應強到足以 ^㈣左' 右資訊。第4圖表示此項遲滞問題,其中γ 衫像是在緊接右圖騰之後出現在PDP上。在第4圖所示實施 例内,左眼可看到來自先前右影像顯示之發光較低的幻影 ’因視頻位階,此幻影會強到足夠全然抑制立體視像。 第5圖表示此效應在電漿電池之位階。紅色和綠色電 池顯示有些餘光,即有一些時間遲延才關掉。意即右影像 在關掉後,白點有後光度(來自紅色和綠色電池的餘光)。 由於右眼關掉的同時,左眼開啟,右影像的後亮度只有左 眼看得到,故失去立體效應(比較第4圖)。在左影像顯示 後,而且左眼用快門關閉後,右眼會發生同樣效應。左眼 效應不如右眼嚴重,只要框週比第5圖所示稍長,並在結 束時含有一種遮沒期。其必要之理由是,對於非標準視頻 源,視頻線會受到顫動,並確定全部副場均配合顫動視頻
574824 五、發明說明(5) 線,全部副場所用時間量,比標準視頻線稍短。來自VCR 、視頻遊樂器之視頻信號,會顯示此類顫動。 有鑑於此,本發明之目的,在於提供一種方法和裝置 ,雖然使用磷元素於顯示,可以立體顯示。 按照本發明,此目的是依據申請專利範圍第1或5項之 ‘ 方法,和申請專利範圍第6或1 0項之裝置加以解決。 本發明方法係基於副場之專用再組織。由本申請人另 ' 一歐洲專利申請案0 1 1 0 3 1 8 5 . 3,已知構想中,為了原有左 , 圖像和原有右圖像的相對應圖素,決定副場電碼字,對稱 為共用副場的許多副場具有一致的輸入。此項想法是基於 觀察到在左、右圖像中大部份相對應圖像元件之立體視像 φ 中,有重大相信性。除共用副場外,左、右圖像有專用左 、右副場。共用副場可組成在一起,並位於專用左副場組 和專用右副場組間之框週内。左、右眼用的快門開啟期間 ,在共用副場定位期間内重疊。此舉可在左、右圖像内產 生更多光脈波,使立體圖像更為明亮。在本案另一具體例 ^ 中,組群副場可以交織方式配置,以減少時間視差問題。 為減少有效磷遲滯效應,如今本發明第一具體的一般 -構想在於重複共用副場組,最好減少副場權值,把共用副 場定位在專用右副場組後和專用左副場組後。以此副場配 置,可以確保右眼所見左圖像的幻影是源自共用副場組, 其光總之歸因於双眼。反之,同樣保持右圖像的幻影。在 鲁 立體顯示情況下,宜減少磷遲滯效應,不引進閃爍。 立體顯示用視頻圖框之相對應處理裝置,如申請專利
第10頁 574824 五、發明說明(6) 範圍第6項所請求。 本發明變通概念是基於對左、右副場只用一些副場, 把副場定位在左、右圖像之相對應場期開始處,故在各場 期結束時,留下相對大遮沒期,其中電池不受活化供光射 。如此可確在遮沒期之前的副場内活化的電池餘光,基本 上落在隨後的遮沒期内。在遮沒期後,由一快門切換到另 一快門,因此抑制或至少大為減少幻影。 立體顯示用視頻圖框之相對應處理裝置,如申請專利 範圍第1 0項所請求。 圖式簡單說明
本發明具體例如附圖所示,詳述如下。附圖中: 第1圖表示立體視像之原理; 第2圖表示具有順序場編碼的立體顯示原理; 第3圖表示立體圖框之副場編碼計劃; 第4圖表示有磷遲滯效應之立體圖像例; 第5圖表示磷遲滯效應的原理計劃; 第6圖表示本發明第一具體例之副場組織; 第7圖表示使用第6圖副場組織時的磷遲滞效應之原理 計劃; 第8圖表示以具體例說明本發明副場編寫過程; 第9圖表示本發明裝置電路實施用之方塊圖;
第1 0圖表示本發明第二具體例之副場組織。 較佳具體例之詳細說明 本發明較佳具體例參見第6 -1 0圖加以說明。
第11頁 574824 五、發明說明(7) 本發明第一具體例即是基於專用共用副場編碼,具有 立體圖像分隔,一如上述。專用共用副場編碼原理,已在 本申請人的前案EP 01103185.3說明。為了本案内容之目 的,在表達上亦可參見前案。此構想背後的基本理念是應 三個影像代替二個:取代左、右影像,考慮到使用三個影 像,即專用右影像、專用左影像,和共用影像。 此構想是基於事實上二原有圖像,係由同一景的二視 圖,有許多相似性。一對右(R )和左(L )影像轉化成三圖像 :即專用右(R’)、專用左(L’),和共用(C’)。此項轉化如 下:
對於螢幕的各圖素: (C’)= comm( ( L),( R)) (R,)= (R) - (C,) (L,)= (L) - (C,) 其中comm( ( L ),( R ))是(R)和(L)視頻值的共用部份。 副場編碼為三個影像而為,得副場組織,其中並置專 用左圖像、共用圖像、專用右圖像的副場。左、右眼用快 門的開啟期間,在共用圖像副場期間重疊。
從認知如果共用副場期間被作動的電池在專用左、右 影像副場期間進行餘光(因為來自共用副場的光總會被双 眼看見)並無問題開始,本發明基本原理在於重複共用副 場’並將一共用副場組配置在專用左圖像的副場組後,而 第二共用副場組配置在專用右圖像的副場組後。第6圖表 示基於此原理的實施例,具有四組份((R’),( L’)和二
第12頁 574824 五、發明說明(8) (C’))顯示器。此實施例於框週内有20副場。第3圖内所 示立體效果主要基於專用左、右副場。因此,在專用左副 場至右眼期間被作動之電池餘光,會破壞立體效果,反之 亦然。所以’專用左副場、專用右副場、共用副場,係按 照第6圖配置。如前所述,右影像至左影像的共用副場之 後發光,不影响立體效果,因為此等共用副場與右影像者 一致,本身對右眼提供同樣後發光。第7圖表示如此組態 之所得磷遲滯效應。
易言之,專用右影像之副場在第一共用副場上遲滯並 無問題,因為此等共用副場由右眼看到。當快門眼鏡轉至 左眼,共用副場在專用左副場上遲滯也沒有問題,因為此 等共用副場是在專用左副場後重複,故亦可由左眼看到。 就專用左副場可進行同樣觀察。此外,在左方的共用副場 ,會在次一圖框的右方遲滯,並非嚴重問題。在此共用部 份期間產生的光,總是由双眼看見,而在次一圖框内重複 此光,會引起運動物像後面有某種色痕,但不會破壞立體 效應。此相當於傳統的磷遲滯效應。此外,在共用副場期 間產生的光強度,總會由於重複而降低。 其次,由左、右影像編碼類似圖素之例,可借助第8 圖說明。下列數值剛好為一實施例,而原理同樣用於不同 值的編碼。
專用共用編碼的原理,是基於二影像間使用共同數值 。在本情況下,最大容許值為4 0。若二值之一小於4 0,則 較小值等於共用值。
第13頁 574824 五、發明說明(9) 在實施例中,所研究的圖素具有下列R,G,B值: 在右影像:R:2 0 7,G:186,BH37, 在左影像:R:52, G : 1 9 , Β··137。 若選用之共用值為40,則可寫成 右圖素: R : 2 0 7 = 40 + 1 6 7 G:18 6 = 19 +16 7 Β:137= 40 + 97 左圖素:
R : 5 2 = 40 + 1 2 G: 19= 19+0 Β:137= 40 + 97 黑體字代表此實施例中之共用部份。對專用值取5副 場電碼具有如下權值:12-33-52-70-88,而對共用值取5 副場電碼36-2 9-2 1 - 1 4-5,三個波道紅、綠、藍的編碼如 下: 對於紅波道:共用值40,專用右值167,專用左值 12 〇 對於綠波道:共用值19,專用右值167,專用左值0。 對於藍波道:共用值40,專用右值97,專用左值97。 因此,紅波道的編碼是:
共用值:40=5+14+21 專用右值:167=1 2 +33+52+70 專用左值:12 = 12
第14頁 574824 五、發明說明(ίο) 第8圖表示全部r:個油;音 中,共用和專用部份之值可的Λ碼過程。在圖示實施例 例中,可能必須接受若干^碼而無損。在其他實施 其次最”應最好;:Π;”。當然’在此情況下’ ,專::ί把5程視頻位階從〇...255以共用副場編碼 並更好是界定共用部份的最大值, 少-副場。以此措施共::二,用至 為敏銳的較低視頻範圍。 旦’疋眼更 之立:η ΐ τ提供沒有太多磷遲滞效應,亦無閃爍 -",、不,1及良好灰度畫像之可接受視頻品質。 所用ΐ外,t此編碼可應用於立體顯示及遭受磷衰減時間 所用之一切顯示(即LCD,LCDS等)。 第9圖說明上述本發明可能之電路實施。 輸入右(R)和左(L)圖像,送到脫伽瑪 J塊:輸出則送到圖像分隔單位2,…輸心方和鬼/圖:產 =個圖像L,,C,,R,。三個圖像送到副場編碼器3,得三 ,剐場電碼 SF(R’),SF(C,),SF(L,)。電漿控 ^ ^ =模式(2D或3D被作動,50赫或60赫模式),以 ^使 田像分隔演算2活化或失活,並以信號c〇D選 I = 馬〇、异。此方塊產生全部電漿控制信號: 持續、抹除,又產生快門眼鏡5全部所需同步-、ν田、 和CSF的電碼,係逐一輪入並 轉化早位6,其中信號資料頂部和資料底部係串h
574824 五、發明說明(11) 面板7的頂部和底部驅動器而產生。共用副場CSF所用電碼 ,兩度供至串聯並聯轉化單位6,故框週用的完整電碼字 確立如第8圖所示。 最後,說明本發明極為簡單之另一具體例。由於紅色 和綠色的磷元素關掉費時,要有時間讓紅色和綠色磷元素 關掉,以免破壞立體效果。 假如,顧及上述每框有2 0副場之編碼。對各眼,即各 影像,指定1 0副場。原理如下:若有時間讓磷在各影像間 關掉,則不會有任何磷遲滯效應防止立體效果。因此,例 如,可用時間只有一半用於各左、右影像的編碼(例如每 影像只有5副場),故磷在其餘時間會有餘光。第1 0圖表示 此編碼原理。 此項解決方式當然相對於灰度畫像,有降低視頻品質 的缺點。顫動技術得以改進不良灰度畫像,也應可用於此 具體例。有關此技術之詳情,可參見本申請人又一歐洲專 利申請案0 0 2 5 0 0 9 9. 9號。幸虧由副場編碼達成之顫動,可 人為產生圖像上更多位階。但一旦只用到5副場來編碼1影 像,品質仍遠較1 0副場編碼為低。此為首先呈現的解決方 式稍為優異之一項理由。
Claims (1)
- 574824 六、申請專利範圍 1 · 一種顯示設備上 示設備具有複數發光元 視頻框之圖素,其中各 視頻框的(圖)框週(期) 元件可作動,以相當於 波光射,又其中為了相 碼字,對於稱為共用副 入,而各圖像的其餘副 特徵為,一圖像之專用 ,配置在同樣圖像的共 2 ·如申請專利範圍 分成左圖像用之左週期 3 ·如申請專利範圍 場按下列順序配置:專 、專用右副場(SRSF)和 副場(SRSF)、共用副場 副場(CSF)者。 4·如申請專利範圍 右快門,在右週期當中 是在左週期當中開啟者 5 · —種顯示設備上 示設備具有複數發光元 視頻框之圖素,其中各 視頻框的框週至少部份 立體顯示用視頻框處理方法,該顯 件,在各情況下其一或以上相當於 視頻框包含左(L )、右(R )圖像,而 分成複數副場(SF ),在此期間發光 亮度控制所用之副場電碼字的小脈 對應圖素,決定左、右圖像副場電 場(CSF)的許多副場具有一致的輸 場稱為專用副場(SRSF,SLSF),其 副場(SRSF, SLSF)相對於呈現順序 用副場(CSF)之前者。 第1項之方法,其中視頻框的框週 ,和右圖像用之右週期者。 第2項之方法,其中一框週内的副 用左副場(SLSF)、共用副場(CSF) 共用副場(CSF),或依序為專用右 (CSF)、專用左副場(SLSF)和共用 第2項之方法,其中快門眼鏡(5 )的 開啟,而快門眼鏡(5 )的左快門, 〇 立體顯示用視頻框處理方法,該顯 件,在各情況下其一或以上相當於 視頻框包含左(L )、右(R )圖像,而 分成複數副場(SF ),在此期間發光574824 六、申請專利範圍 場(SLSF)和共用副場(CSF)者。 9·如申請專利範圍第7項之穿置,立中快門p俨3 利用控制機構(4)控制,A由=裒置兵T厌門眼鏡(5)疋 週期之間開啟,而,/門眼的快士門眼鏡(5)的右快門是在右 者。 、門眼鏡的左快門是在左週期之間開啟 f J1Ϊ ^ Σ设備上立體顯示用視頻框處理設備,該顯 ί光元件’*各情況下其-或以上相當於 素,,、中各視頻框包含左圖像,含 數Μ P7稱(,_4) 便把視頻框的框週至少分成複 字S ΐ二ΐ光70件可以相當於亮度控制所用副場電碼 二上射而作動’其特徵為,控制機構⑷分別 1 ^ ^ # 圖像(R)把框週分成至少一左週期和至少 之.,、’,]左圖像(L)之副場(SF )配置在至少一左週期 之起初=將右圖像(R)之副場(SF )配置在至少一右週期 光;;未;;ΪΪ期結束時,留有預定量時間第20頁
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2001
- 2001-06-23 EP EP01250236A patent/EP1271965A1/en not_active Withdrawn
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2002
- 2002-05-27 KR KR1020020029230A patent/KR100914806B1/ko not_active IP Right Cessation
- 2002-06-07 TW TW91112280A patent/TW574824B/zh not_active IP Right Cessation
- 2002-06-12 ES ES02291462T patent/ES2229062T3/es not_active Expired - Lifetime
- 2002-06-12 DE DE60201224T patent/DE60201224T2/de not_active Expired - Lifetime
- 2002-06-20 US US10/175,968 patent/US6977629B2/en not_active Expired - Fee Related
- 2002-06-21 JP JP2002182124A patent/JP4267264B2/ja not_active Expired - Fee Related
- 2002-06-24 CN CNB021247463A patent/CN1209932C/zh not_active Expired - Fee Related
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TWI502958B (zh) * | 2011-06-30 | 2015-10-01 | Acer Inc | 立體影像顯示裝置及其方法 |
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KR20030001248A (ko) | 2003-01-06 |
KR100914806B1 (ko) | 2009-09-02 |
CN1209932C (zh) | 2005-07-06 |
US20020196199A1 (en) | 2002-12-26 |
CN1394084A (zh) | 2003-01-29 |
DE60201224D1 (de) | 2004-10-21 |
DE60201224T2 (de) | 2005-03-10 |
US6977629B2 (en) | 2005-12-20 |
JP2003070025A (ja) | 2003-03-07 |
EP1271965A1 (en) | 2003-01-02 |
JP4267264B2 (ja) | 2009-05-27 |
ES2229062T3 (es) | 2005-04-16 |
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