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TWI300555B - - Google Patents

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Publication number
TWI300555B
TWI300555B TW093125546A TW93125546A TWI300555B TW I300555 B TWI300555 B TW I300555B TW 093125546 A TW093125546 A TW 093125546A TW 93125546 A TW93125546 A TW 93125546A TW I300555 B TWI300555 B TW I300555B
Authority
TW
Taiwan
Prior art keywords
recording
mark
pulse
length
shortest
Prior art date
Application number
TW093125546A
Other languages
English (en)
Other versions
TW200511271A (en
Inventor
Tatsuya Tomura
Tsutomu Sato
Yasunobu Ueno
Soh Noguchi
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of TW200511271A publication Critical patent/TW200511271A/zh
Application granted granted Critical
Publication of TWI300555B publication Critical patent/TWI300555B/zh

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    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • G11B7/00456—Recording strategies, e.g. pulse sequences
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    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
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Landscapes

  • Optical Recording Or Reproduction (AREA)
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  • Optical Head (AREA)

Description

1300555 (1) 九、發明說明 【發明所屬之技術領域】 本發明係有關於，藉由照射光束使得記錄層上產生穿 透率、反射綠等光學性變化而可進行資料之記錄、再生， 且可進行追記之色素系追記型DVD媒體之記錄再生方法 及裝置.。 【先前技術】 現在，次世代大容量光碟，正朝向DVD-R的開發邁 進中。做爲提升記錄容量的要素技術，需要記錄坑微小化 所需之記錄材料的開發、以MPEG2爲代表之影像壓縮技 術的採用、記錄坑讀取用半導體雷射的短波長化等之技術 開發。 至今爲止的紅色波長區的半導體雷射，雖然只有條碼 讀取機或測量器用的670nm帶的AlGalnP雷射二極體被 商品化，但隨著光碟的高密度化，紅光雷射會一直被光儲 存市場繼續使用下去。在DVD驅動器的情況，光源是使 用63 5nm帶和65 0nm帶之兩種波長帶的雷射二極體且被 規格化。另一方面，再生專用的DVD-ROM驅動器係以波 長約650nm而被商品化。 一般藉由加熱模式來形成凹坑（標記）的色素系追記 型DVD媒體，係將特定記錄速度下將記錄時的雷射發光 所致之記錄脈衝列的脈衝寬度和記錄功率予以最佳化，而 在不同記錄線速度中所形成的標記或空白的狀態會有變化 -5- 1300555 (2) 。亦即，因爲標記形成時所必須的預先加熱脈衝所致之熱 容量的不足，或到達之加熱溫度相對於最佳分解溫度有異 而使標記的平均長度參差不齊’或因最佳之加熱脈衝的工 作比（duty ratio )有異而導致無法獲得均勻的標記寬或 隨著標記長產生忽粗忽細等等，因而導致顫動（jitter ) 特性惡化。 又，關於DVD系媒體的實體格式，在DVD-R媒體之 格式的情況下，是以將被稱作「凸軌預刻坑」之凸軌的一 部份予以切斷而成的格式而被規格化。若依照此種方式， 凸軌預刻坑訊號（LPPb )若未滿0.16則預刻坑位址等預 刻坑資訊就無法良好再生，若超過0.32則LLP訊號本身 會在資料領域中如雜訊般地動作，導致資料錯誤頻發。因 此，LPP係必須將合於記錄材料的切斷寬以母模（ stamper )來微調之，必須以使LPPb落在0.1 6〜0.32之範 圍內的方式來控制凸軌切斷寬。 此外，記錄層中使用色素的光記錄媒體的公知例有， 將聚甲川（poly met hine )色素或聚甲川色素和光穩定化 材料當作記錄材料使用者、四氮雜紫質（tetra-aza-porphyrin) ( Porphyrazine)色素或花青（cyanine)色素 +偶氮（azo )金屬螯合色素（鹽形態色素）所成之層和反 射層當作記錄層者、甲臢（formazan )(金屬螯合）色素 +其他色素當作記錄材料使用者、二吡咯甲烷（d i -pyrromethene )(金屬螯合）色素+其他色素當作記錄材 料使用者等，不勝枚舉。又，雖然在記錄材料中使用色素 -6- 1300555 (3) 而進行多脈衝記錄者以有多數公知，但就本發明人所知， 類似本發明般對於色素系追記型DVD媒體以單一脈衝進 行記錄，且著眼於進行高線速度記錄之際之記錄波形的文 獻，目前仍未發現。 【發明內容】 〔發明所欲解決之課題〕 本發明的目的，在於提供一種記錄再生方法及裝置， 係在對色素系追記型DVD媒體進行高線速記錄之際，能 夠獲得良好記錄波形。 又，本發明的目的，在於提供一種屬於使用振盪波長 短於CD系媒體的半導體雷射的追記型0¥0系統的新格 .式方式，且和LPP方式相同是能有效消除在資料添寫部 上的未記錄領域之方式，甚至，相較於DVD-R凸軌預刻 坑方式，更可以免除於製作母模時的細微切斷寬控制或因 LPP訊號往資料部的洩漏導致之資料錯誤的優異方式。 〔用以解決課題之手段〕 亦即，上記課題，是藉由以下的1 )〜1 7 )之發明（ 以下稱作本發明1〜1 7 )來解決。 1 ) 一種色素系追記型DVD媒體之記錄再生方法’其 特徵爲，對於在具有設置搖擺（wobble)之引導溝的基板 上所形成之以有機色素爲主成份的記錄層’將最短標記以 輸出高於其他標記的脈衝進行記錄’將由短數來第3以降 1300555 (4) 長度的記錄標記，以一脈衝後端部是被一定時間高輸出化 ，且該已高輸出化之脈衝功率是等於第2短之標記的脈衝 功率的脈衝光進行記錄；在標記記錄時，對全部標記的上 記脈衝的後端部以降照射冷卻脈衝，且令該照射光量，在 一定時間爲〇 · 1 m W以下。 2)如前記1)之記錄再生方法，其中，將由短數來 第3以降長度的記錄標記，以一脈衝的前端部和後端部兩 .處是被一定時間高輸出化，且該已高輸出化之脈衝功率是 等於第2短之標記的脈衝功率的脈衝光進行記錄。 3 )如前記1 )或2 )之記錄再生方法，其中，將對脈 衝後端部以降照射冷卻脈衝的時間，設成最短長度空白的 1/6〜6/6之長度。 4 )如前記1 )〜3 )之記錄再生方法，其中，將形成 前方空白長爲最短長之標記的記錄脈衝列的開頭加熱脈衝 寬度，以該標記的長度是否爲最短長來加以區別，而將最 短長標記的開頭加熱脈衝寬度，設定成長於非最短長標記 的開頭加熱脈衝寬度；且，將形成最短長標記之記錄脈衝 列的開頭加熱脈衝寬度，以該最短長標記的前方空白長是 否爲最短長來加以區別，而將前方空白長爲最短之標記的 開頭加熱脈衝寬度，設定成短於前方空白長爲非最短之標 記的開頭加熱脈衝寬度。 5 )如前記1 )〜4 )之記錄再生方法，其中，前記高 頻搖擺（wobble)，係設定成令基本時脈週期爲T時相當 於4T〜96T之頻率。 1300555 (5) 6)如前記1)〜5)之記錄再生方法’其中’將局頻 搖擺的振幅（Wo )，和藉由2分割光偵測器進行軌道錯 誤偵測控制所需之軌道錯誤偵測訊號的推挽振幅（PP )的 比値「Wo/PP」，是以O.lSWo/PPSO.4之範圍而同步契 合。 7 )如前記1 )〜6 )之記錄再生方法，其中，記錄光 的波長爲600〜720 nm。 8 )如前記1 )〜7 )之記錄再生方法，其中，相對於 記錄光及再生光的波長±5nm之波長帶的光，記錄層單層 的折射率η爲1.5$ 3.0，且消光係數k爲0.02S kg 0.2。 9 )如前記1 )〜8 )之記錄再生方法，其中，記錄層 的分解開始溫度爲100〜3 60°C。 1 〇 )如前記1 )〜9 )之記錄再生方法，其中，光記 錄媒體是在基板上，做爲除了記錄層以外的構成層，具有 :反射層、保護層、接著層、保護基板、基板面硬覆層從 中選擇至少一層。 1 1 )如前記1 〇 )之記錄再生方法，其中，反射層是 由金、銀、鋁之任一，或這些爲主成份之合金。 1 2 )如前記1 0 )〜1 1 )之記錄再生方法，其中，保 護層是由紫外線硬化樹脂所成。 1 3 )如前記1 0 )〜1 2 )之記錄再生方法，其中，將 兩片基板貼合而成爲雙面構成之記錄媒體所須之接著層是 被設置在該基板間，且該接著層所用的接著劑是紫外線硬 -9 - 1300555 (6) 化樹脂。 14) 一種記錄再生裝置，其特徵爲，具有以下機能： 對於在基板的引導溝內具有搖擺之色素系追記型DVD媒 體，將最短標記以輸出高於其他標記的脈衝進行記錄，將 由短數來第3以降長度的記錄標記，以一脈衝後端部是被 一定時間高輸出化，且該已高輸出化之脈衝功率是等於第 2短之標記的脈衝功率的脈衝光進行記錄；在標記記錄時 ，對全部標記的上記脈衝的後端部以降照射冷卻脈衝，且 令該照射光量，在一定時間爲0.1 mW以下，而進行記錄 再生。 1 5 )如前記1 4 )之記錄再生裝置，其中，具有以下 機能：將由短數來第3以降長度的記錄標記，以一脈衝的 則晒部和後贿部兩處是被一疋時間局輸出化，且該已筒輸 出化之脈衝功率是等於第2短之標記的脈衝功率的脈衝光 進行記錄之機能。 16) 如前記Η)或15)之記錄再生裝置，其中，具 有以下機能：將對脈衝後端部以降照射冷卻脈衝的時間， 設成最短長度空白的1/6〜6/6之長度。 17) 如前記14)〜16)之記錄再生裝置，其中，具 有以下機能：將形成前方空白長爲最短長之標記的記錄脈 衝列的開頭加熱脈衝寬度，以該標記的長度是否爲最短長 來加以區別’而將最短長標記的開頭加熱脈衝寬度，設定 成長於非最短長標記的開頭加熱脈衝寬度；且，將形成最 短長標記之記錄脈衝列的開頭加熱脈衝寬度，以該最短長 -10- 1300555 (7) 標記的前方空白長是否爲最短長來加以區別，而將前 白長爲最短之標記的開頭加熱脈衝寬度，設定成短於 空白長爲非最短之標記的開頭加熱脈衝寬度。 【實施方式】 以下將詳細說明本發明。 本發明1、2，係屬於藉由脈衝光進行記錄並將 錄以再生光進行再生之色素系追記型DVD媒體之記 生方法，其中，規定了基本的最佳脈衝照射波形。針 短數來第3以降長度的標記，亦即針對除了最短長標 第2短標記以外的標記，脈衝的後端部或前端部和後 上施加了追加功率而予以高輸出化的長度，是基本時 期T的0.5倍〜2倍，亦即以0.5T〜2T之範圍爲特 想，而在〇·2Τ〜2.5T之範圍內亦可實施。又，最短 記的脈衝光量，必須要大於其他標記的追加光量，令 長標記的功率爲W0，第2短標記的功率及由短數來 以降之長度的標記的追加功率爲W 1，無追加功率爲 則雖然可採用W0/W1 = 1.01〜2.00之範圍，但理想爲 〜1.50之範圍。另一方面，W1/W2雖可採用1.05〜 之範圍，但理想爲1.08〜2.00之範圍。 本發明3係屬於規定了設置在各脈衝之後端部以 冷卻脈衝的理想照射條件，冷卻脈衝照射時間，係最 白長的1/6〜6/6之長度爲理想，超過此範圍則很難 本發明之效果。 方空 則方 該記 錄再 對由 記和 端部 脈週 別理 長標 最短 :第3 W2， 1.02 ^3.00 降的 短空 獲得 -11 - 1300555 (8) 藉由選擇上記此種脈衝波形，尤其是能在高記錄線速 下以低顫動（jitter )進行良好之記錄。 色素系之光記錄媒體，若要實現高線速化則記錄功率 必須越大越好，其結果爲更容易引起標記間的熱干擾。於 是，爲了使標記形成之際的標記邊緣切整良好，本發明是 有效的。 若按照先前例的態樣進行記錄，則得到最低顫動之功 率和使得錯誤呈最小之功率會發生錯離而減少了功率範圍 。具體而言在高線速記錄下獲得最低顫動之記錄功率中記 錄訊號的非對稱性會偏向負値側的傾向，而導致在錯誤測 定時無論顫動再低都很容易出現錯誤。例如，即使是非對 稱性爲負且低顫動、低錯誤，也會因媒體、驅動器的經年 變化等，導致非對稱性爲零附近所記錄之媒體容易出現錯 誤。本發明就是針對解決該低非對稱性問題而硏發。 又，即使在以複數脈衝光（多脈衝）寫入1標記的時 候，若使脈衝光最佳化，則雖然可解決上述之低非對稱性 問題，但由於使用複數的脈衝光，因此當脈衝光上揚、下 挫的時間參差發生之際可能導致記錄品質本身良莠不齊。 該良莠不齊可說越是高線速記錄則越容易發生。 相對於此，本發明中由於是每一標記用1脈衝光進行 記錄，因此可以提供較該多脈衝光記錄之記錄品質良莠不 齊更少的記錄方法，是爲優點。又，寫入中的位址偵測當 中，由於較多脈衝光法更爲單純的記錄波形，因此記錄時 的光量容易平均化，不只是空白部的反射光量而是連標記 -12- 1300555 (9) 部的光量都能予以平均化而偵測位址，即使在脈衝的後端 設置〇 . 1 mW以下的冷卻脈衝也可使位址偵測較爲容易實 施，具有此一優點。 該當於本發明1之記錄波形之一例示於圖6、圖8， 但此時只有最短長標記和第2短標記的脈衝是單純的矩形 波，且最短長標記的脈衝是被高輸出化，由短數來第3以 降長度之標記的脈衝之後端部，是以低於最短長標記的位 準而被高輸出化。由短數來第3以降長度之各標記的參數 ，係只要能將後端部高輸出化而可選擇幾乎共通的參數， 具有容易佈署在已經實用的驅動器上的好處，但光記錄媒 體則要求能夠以簡略化的記錄波形獲得良好顫動者。 又，該當於本發明2之記錄波形之一例示於圖6、圖 8，但此時只有最短長標記和第2短標記的脈衝是單純的 矩形波，且最短長標記的脈衝是被高輸出化，由短數來第 3以降長度之標記的脈衝之前端部和後端部兩處，是以低 於最短長標記的位準而被高輸出化。相較於本發明1，雖 然由短數來第3以降長度之各標記需要兩處的高輸出功率 化’而佈署至已實用之驅動器上會有負荷，但做爲光記錄 媒體則具有容易獲得良好顫動之好處。 圖6〜9中，（圖5及圖4中亦同），「space」係空 白，「mark」係標記，「Cooling Area」係冷卻區域，「 T」係基本時脈週期，「η」及「η，」係3以上的整數，「 PS」係前方空白長，「cm」係記錄標記長，「WO」係最 短長標記的記錄功率，「W 1」係第二短標記的功率或由 -13- 1300555 (10) 短數來第3以降長度之標記的已追加功率，「W2」係由 短數來第3以降長度之無追加功率。 又，考慮熱干涉的影響，將形成前方空白長爲最短長 之標記的記錄脈衝列的開頭加熱脈衝寬度，以該標記的長 度是否爲最短長來加以區別，而將最短長標記的開頭加熱 脈衝寬度，設定成長於非最短長標記的開頭加熱脈衝寬度 (其一例則參照後述表1之前方空白長爲3 T而記錄標記 長爲3T、4T〜14T之情形），藉此可實現顫動更低之記 錄。 甚至，將形成最短長標記之記錄脈衝列的開頭加熱脈 衝寬度，以該最短長標記的前方空白長是否爲最短長來加 以區別，而將前方空白長爲最短之標記的開頭加熱脈衝寬 度，設定成短於前方空白長爲非最短之標記的開頭加熱脈 衝寬度（其一例則參照後述表1之記錄標記長爲3 T而前 方空白長爲3T、4T〜14T之情形） ，藉此可實現顫動更 進一步低之記錄。 將上記開頭加熱脈衝寬度設定得較短所需之校正量（ 長度），係以0.02Τ〜0.10Τ之範圍爲特別理想。當所形 成之標記的前方空白長爲最短長的時候，形成該標記的脈 衝列的開頭脈衝寬度是略等同於其他標記的情況，熱干涉 導致該前方空白長變短，顫動則會若干惡化。於是，只有 在這種時候，若將進行標記記錄所需之開頭加熱脈衝寬度 縮短則有效果。在想要將脈衝寬度縮得更短的時候，縮短 開頭加熱脈衝寬度的前邊緣（edge )當然是有效的。 -14- 1300555 (11) 又，所形成之標記的前方空白長爲最短長時，形成該 標記之脈衝列的開頭加熱脈衝寬度若短於0.1 0 T，則標記 本身會過短而非理想。 將最短長標記的開頭加熱脈衝寬度設定成長於其他標 記之際的校正量（長度），理想爲0.05T〜0.25T。尤其是 記錄線速度越大則越難形成最短長標記，因此以上記範圍 進行校正而使最短長標記的開頭脈衝寬度變長。 開頭脈衝寬度的校正量之具體例示於下記表1。 〔表1〕 記錄標記長 3Τ 4Τ 〜 14Τ 刖 3Τ ±0.00Τ -0.05Τ 方 空 白 長 4Τ I 14Τ + 0.05Τ ±0.00Τ 其次，列舉做爲記錄層所必需之項目的光學特性。 做爲光學特性，係相對於記錄再生波長附近的長波長 附近的波長帶的光，亦即相對於記錄光及再生光之波長 士 5 nm之波長帶光的記錄層單層折射率η爲1.5 S 3.0， 消光係數k爲0.02€kS0.2之範圍爲理想。若η未滿1.5 ，則由於難以獲得充分光學，化而使記錄調變度降低而非 -15- 1300555 (12) 理想；若η超過3 · 0則波長依存性變得過高，即使 再生波長領域也會導致錯誤因而並非理想。又，若 0.02，則記錄感應度變差而非理想；若k超過0.2 以獲得50%以上之反射率因而並非理想。 此外，DVD雖然在再生專用機上是以65 0nm 被規格化，但記錄型媒體之記錄光的波長係除了 authoring)專用媒體的635nm以外，還有以一般 65 0〜66 Onm而被規格化。可是在此同時，這些波 只是中心波長，會因爲LD的製造參差而往短波長 波長側偏移。又LD，在其特性上，一般回隨著溫 而波長會往長波長側平移。本發明係能夠以涵蓋上 領域之600〜720nm的記錄波長來實施之方法。 其次，雖然描述了在基板上設置蛇行之引導溝 特性，但用來特定搖擺頻率所需之T係爲基本時脈 若爲DVD(4.7GB)媒體，則約0.133//m，時間 3 8 n s e c 〇 通常，搖擺的頻帶是使用相當於150T〜400T 頻帶，無論要做頻率調變或是相位調變，在資料追 候搖擺頻率過低，導致前資料和追記資料之間還留 的空白而無法達到高密度記錄。對此，DVD-R中 LPP，藉由該LPP訊號來控制資料寫入的位置。 可是在此同時，LPP方式中若LPP訊號振幅過 LPP很難良好讀出，反之若LPP過大則這次會是 號本身會滲入至寫入資料而導致資料錯誤頻發之不 是記錄 k未滿 ，則難 附近而 編寫（ 用途之 長也僅 側、長 度上升 記波長 的搖擺 週期， 上約爲 ，但該 記的時 有很大 則設置 小，則 LPP訊 良情況 -16- 1300555 (13) ，因而產生LPP爲0.16SLPPbS0.32、理想爲0.18S LPPb S 0·26之限制，在製作母模之際，必須要能細微地 控制凸軌的切斷寬。 •對此，在高頻搖擺中則不須LPP，爲了將搖擺予以調 變而同步之，不會導致LPP方式那樣地錯誤頻發之事態 。如同本發明5所規定，高頻搖擺的理想頻率爲4Τ〜96Τ 。若小於4Τ則頻率過高而難以偵測，在旋轉控制或位址 檢知信賴性上亦有問題。另一方面，若大於96Τ則頻率過 低，在追記資料之際在接合處的間隔會太開，會導致容量 降低或資料處理速度降低等問題。 做爲本發明對象之DVD媒體的搖擺振幅，係只要是 通過了適當的濾波器，例如4MHz、30kHz的高、低通濾 波器的訊號的搖擺振幅（Wo )，和通過了適當的濾波器 ，例如30kHz的濾波器的推挽訊號（PP )的比 Wo/PP， 滿足〇·1 ‘ Wo/PPS 0.4，即可容易地配合本發明之目的之 搖擺，更理想的範圍是0.15$Wo/PPS0.30。Wo/PP之値 若未滿〇·1則在同步時訊號強度會不足，若超過0.4則會 有資料部錯誤增加的傾向。但是，相較於LPP方式，LPP 對大的媒體的資料錯誤發生的影響度小且伴隨搖擺振幅增 加的資料錯誤爲和緩。 再者，於母模作成之際，雖然要使LPP方式的LPP 切斷寬在前述之0.16〜0.32的範圍內是需要高度的切斷 寬控制技術，但本發明之高頻搖擺方式下只需要管理高頻 發生源和搖擺的振動量大小（以控制搖擺振動量之電路而 -17· 1300555 (14) 可以良好的重現性作成任意振動量）就可達成目的，因此 母模的良率、媒體的良率都可飛躍性地提升。 又，具有上記隔室之基板的溝形狀，若舉例爲使用有 機色素藉由溶劑塗佈法而形成記錄層之情形，則理想溝深 爲1 000〜2500A。溝深未滿1 000 A則推挽訊號不夠充分 而無法進行尋軌控制。又，若溝深超過25 00人則基板形 成之際轉印性變差而非理想。 再者，令設有色素記錄層時的色素溝深係搖擺頻率爲 mT(m爲自然數）、色素溝深爲dl時，理想爲落在1200 SdlxmS 160000之範圍。dlxm若低於1200則無法獲得 充分的差訊號，於記錄再生時無法進行充分的尋軌；若dl xm超過1600 00則會相反震盪還是不適於尋軌，而且前 述之基板成形的轉印極限等原因使得基板溝深是有極限， 在實質上是不可能超過1 60000。 又，爲了確保記錄密度爲4〜5GB之容量，軌道間距 必須要爲0.64〜0.8 μ m左右。關於溝寬，雖然隨著記錄 材料而不同，但幾乎所有的有機材料，都可適用半値寬 0 · 1 8〜0.4 0 /i m之寬度。 其次，說明做爲本發明之對象的色素系追記型DVD 媒體的層構成、各層之必要特性及構成材料。 圖1A〜圖1D，係通常之追記型光碟的層構成之例子 ，圖2A〜圖2C，係通常之CD-R媒體之層構成例子，圖 3 A〜圖3 C，係追記型DVD媒體之層構成例子，而本發明 對象之色素系追記型DVD媒體的理想之基本構成，係如 -18 - 1300555 (15) 圖3B及圖3C.所不，是將第1基板1和第2基板（保護 基板）7之間隔著記錄層2而以接著劑貼合而成。 圖1A係基板1上具有記錄層2之態樣，圖1 B係在 記錄層2下具有下拉層3之態樣、圖1 C係更在記錄層2 上具有保護層4之態樣、圖1D則在第1基板1的相反側 上具有硬覆層5之態樣。又，圖2A係基板1上具有記錄 層.2、反射層6、保護層4之態樣，圖2 B係具有下拉層3 之態樣、圖2C係更具有保護層4之態樣。又，圖3A係 基板1上具有記錄層2、反射層6、保護層4之態樣，圖 3B係更具有接著層8和保護基板7之態樣、圖3C係更在 記錄層2下具有下拉層3且在基板1的相反側具有硬覆層 5之態樣。 ·. 記錄層可爲有機色素層單層，或可爲了提高反射率而 爲有機色素層和反射層的層積。記錄層和基板之間亦可設 置下拉層或保護層，爲了提升機能而亦可將各層做成2層 以上之構造。最普通使用的是，第1基板/有機色素層/ 反射層/保護層/接著層/第2基板（保護基板）所成之 構造。 《基板》 基板雖然在從基板側進行記錄再生時對於雷射要爲透 明才行’但在從記錄層側進行記錄再生時則不必爲透明。 基板材料有，例如聚酯樹脂、聚丙烯酸樹脂、聚醯胺樹脂 、聚碳酸酯樹脂、聚烯烴樹脂、酚樹脂、環氧樹脂、聚醯 -19- 1300555 (16) 亞胺樹脂等塑膠，或是玻璃、陶瓷、金屬等都可使用。此 外’基板表面上亦可形成尋軌用引導溝或引導坑，甚至位 址訊號等預刻格式。 《記錄層》 記錄層係受到雷射光照射而發生某種光學變化，藉由 該變化而將資訊進行記錄，其材料可使用以有機色素爲主 成份者。此處，所謂的主成份，雖然意味著含有記錄再生 必要之充分量的有機色素，但通常除了隨著需要而適宜添 加之少量的添加劑外，只使用有機色素。 有機色素的例子有，偶氮系、甲臢系、二吡咯甲烷（ di-pyrromethene )系、（聚）甲川（methine )系、萘花 青（naphthalocyanine ) 系、 花青（phthalocyanine ) 系、四氮雜紫質（t e t r a · a z a - p o r p h y r i η )系、S q u a 1 i 1 i u m 系 、Croconium 系、啦喃鑰（pyrylium)系、萘願（ naphthoquinone )系、蒽醒(anthraquinone )系（陰丹士 林 indanthrene系）、二苯駢B比喃（xanthene)系、三苯 甲院（triphenylmethane)系、天藍烴（azulene)系、四 氫膽鹼（tetrahydrocholine)系、菲（phenanthrene)系、 三苯噻嗪（triphenylthiazine )系色素，或這些色素的金 屬錯合體。其中理想爲，偶氮（金屬螯合）色素、甲臢（ 金屬螯合）色素、Squaliliixm (金屬螯合）色素、二吡咯 甲烷（金屬螯合）色素、三甲川花青色素、四氮雜紫質色 素0 -20- 1300555 (17) 上記色素的熱分解特性，理想爲分解開始溫度1 〇〇〜 360 °C者，特別理想的是1〇〇〜350 °C者。若分解開始溫度 超過3 6 0 °C則記錄時無法順利形成凹坑而導致顫動特性變 差。又，若未滿1 0 0 °C則碟片的儲存穩定性會惡化。 上記色素中，亦可爲了提升光學特性、記錄靈敏度、 訊號特性等目的而混合入其他的有機色素、金屬、金屬化 合物，或層積一由色素層和其他有機色素、金屬、金屬化 合物所成之層。 這類金屬、金屬化合物的例子有，In、Te、Bi、Se、 Sb、Ge、Sn、Al、Be、Te〇2、SnO、As、Cd 等，可將各 者分散混合或層積使用。 甚至，上記染料中亦可分散混合例如離子聚合物樹脂 (ionomer resin)、聚醯胺樹脂、乙燒系樹脂、天然高分 子、矽膠、液狀橡膠等各種材料或矽烷耦合劑等，亦可以 特性改良爲目的而一倂使用安定劑（例如過渡金屬錯合體 )、分散劑、難燃劑、滑劑、帶電防止劑、界面活性劑、 可塑劑等。 記錄層的形成，係可藉由蒸著、濺鍍、C V D、溶劑塗 佈等通常的手段來爲之。使用塗佈法的情況下，可將上記 染料溶解於有機溶劑，藉由噴霧、滾軸塗佈、浸漬、旋塗 等慣用的塗佈法來進行。所用的有機溶媒可列舉有，一般 的甲醇、乙醇、丙醇等醇類；丙酮、甲基乙基酮、環已酮 等酮類；N，N-二乙基甲醯胺、N，N-二乙基乙醯胺等醯胺類 ;二甲亞碾等亞颯類（sulfoxide ):四氫呋喃 （ -21 - 1300555 (18) tetrahydrofuran ) —•氧陸圜（dioxane)、乙酸、乙一酉孚 甲醚（ethylene glycol monomethylether)等醚類；乙酸甲 酯…乙酸乙酯等酯類；氯仿、氯乙烷、二氯甲烷、四氯化 碳、三氯甲烷等脂肪族碳氫鹵化物類；苯、二甲苯、單氯 苯、二氯苯等芳香族類；甲氧基乙醇、乙氧基乙醇等溶纖 劑類（cellosolve);已院、戊垸、環已院、甲基環已院 等碳氫化合物類等。
記錄層的膜厚係 100A〜10 " m，理想爲 200〜2000A 者爲適當。 《下拉層》. 下拉層係爲了（ 1 )提升接著性，（2 )隔絕水分或氣 體，（3 )提升記錄層的儲存穩定性，（4 )提升反射率， (5 )保護基板不受溶劑侵蝕，（6 )形成引導溝、引導坑 、預刻格式等目的而設置。對於目的（1 )，可使用離子 聚合物樹脂（i〇nomer resin )、聚醯胺樹脂、乙烯系樹脂 '天然樹脂、天然高分子、矽膠、液狀橡膠等各種高分子 化合物’或矽烷耦合劑等。對於目的（2 )及（3 )，除了 上記高分子材料外，可使用 SiO、MgF、Si02、TiO、ZnO 、TiN、SiN等無機化合物，甚至可使用Zn、Cu、Ni、Cr 、Ge、Se、Au、Ag、A1等金屬或半金屬。對於目的（4 )’可使用Al、An、Ag等金屬或甲川染料、二苯駢吡喃 (xanthene )系染料等所成之具有金屬光澤的有機薄膜。 對於目的（5 )及（6 )，可使用紫外線硬化樹脂、熱硬化 -22- 1300555 (19) 樹脂、熱可塑性樹脂等。 下拉層的膜厚係0.01〜30/zm，理想爲0.05〜10//m 者爲適當。 《反射層》 反射層的材料雖然可列舉有Au、Ag、Cr、Ni、A1、 Fe、Sn等單體而獲得高反射率隻難以腐触的金屬或半金 屬，但站在反射率和生產性的觀點來看，以 Au、Ag、A1 爲尤其理想。又，這些金屬或半金屬可單獨使用或可爲2 種以上之合金的方式而使用。 膜形成法可列舉如蒸著法、濺鍍法等，膜厚係5 0〜 5000人，理想爲100〜3000A〇 《保護層、基板面硬覆層》 保護層及基板面硬覆層，係爲了（1)保護記錄層（ 反射吸收層）免於損傷、灰塵、汙垢等，（2 )提升記錄 層（反射吸收層）的儲存穩定性，（3 )提升反射率等目 的而使用。對於這些目的，可使用相同於前記下拉層的材 料。或是’聚丙烯酸甲酯樹脂、聚碳酸酯樹脂、環氧樹脂 、聚苯乙烯樹脂、聚酯樹脂、纖維素樹脂、脂肪族碳氫化 物樹脂、天然橡膠、苯乙烯-丁二烯樹脂（styrene-butadiene resin)、氯丁二烯樹脂（chl〇r〇prene resin)、 躐、醇酸樹脂（alkyd resin )、乾性油、松香油等熱軟化 l'生、熱融熔丨生樹S曰等有機材料。最理想的是生產性優的紫 -23- 1300555 (20) 外線硬化樹脂。 保護層或基板面硬覆層的膜厚係0.01-爲 0.05 〜10// m〇 上記下拉層、保護層及基板面硬覆層中 層的情形同樣地含有安定劑、分散劑、難燃 電防止劑、界面活性劑、可塑劑等。 《保護基板》 保護基板雖然在從保護基板側照射雷射 射呈透明，但在單純當作保護板使用時亦可 能夠使用之保護基板材料係和前記基板 ，可使用聚酯樹脂、聚丙烯酸樹脂、聚醯胺 酯樹脂、聚烯烴樹脂、酚樹脂、環氧樹脂、 等塑膠，或是玻璃、陶瓷、金屬等。 《接著層》 接著層的材料，只要是能將兩片記錄媒 任何材料均可，若考慮生產性，則以紫外線 或熱融型接著劑爲理想。 其次說明本發明的記錄再生裝置。 記錄大容量資訊的裝置一般雖使用光碟 是藉由光碟驅動器（記錄再生裝置）而進行 處，說明光碟和光碟驅動器的構成。 DVD-RAM · WO、DVD-R、DVD + R、及 3 0 // m，理想 ，亦可和記錄 劑、滑劑、帶 光時必須對雷 不透明。 材料完全相同 樹脂、聚碳酸 聚醯亞胺樹脂 體予以接著的 硬化型接著劑 ，但光碟通常 記錄再生。此 DVD-RAM、 -24- 1300555 (21) DVD-RW、DVD + RW碟片，係屬於可寫入（可記錄）DVD (Digital Versatile Disc ) 。D V D - R A Μ · W Ο、D V D - R、 DVD + R係屬於只能寫入一次的DVD (又稱DVD Write Once )。又，DVD-RAM、DVD-RW、DVD + RW 是屬於可 多次寫入的DVD。這些DVD + R或DVD + RW碟片等光碟 ，是藉.由以下圖1 0所示驅動器而進行資訊的記錄再生。 圖1 〇係針對光碟驅動器，將其槪要構成之一例予以 圖示之功能方塊圖。圖中，1 1係光碟，1 2係轉軸馬達， 1 3係光拾取器’ 1 4係馬達驅動器，1 5係讀取放大器，1 6 係伺服手段，17係DVD解碼器，18係ADIP解碼器，19 係雷射控制器，2(U系DVD編碼器，21係DVD-ROM編碼 器，22係緩衝RAM，23係緩衝管理器，24係DVD-ROM .解碼器，25係ATAPI/SCSI介面，26係D/A轉換器，27 係 ROM，28 係 CPU，29 係 RAM，LB 係雷射光，Audio 係音訊輸出訊號。 該圖1 〇中，箭頭係資料主要流動方向，又，爲了簡 化圖示.，控制圖1 0各方塊的CPU28上，只標注粗線而省 略了和各方塊的連接。ROM27內，存放著以CPU28能夠 解讀的程式碼所編寫成的控制程式。此外，一旦光碟驅動 器的電源呈ON狀態’則前記程式會被載入主記憶體（未 圖示），前記CPU28係聽從該程式而控制上記各部的動 作，同時將控制所必須的資料等暫存在R A Μ 2 9。 光碟驅動器的構成和動作，係如下所述。光碟1 1係 藉由轉軸馬達1 2而被旋轉驅動。該轉軸馬達1 2係藉由馬 -25- 1300555 (22) 達驅動器1 4和伺服手段1 6，以線速度或角速度一定的方 式而控制。該線速度或角速度，亦可階段性地變更。 光拾取器13，係將未圖示的半導體雷射、光學系、 對焦致動器、尋軌致動器、受光元件及位置感測器予以內 藏，將雷射光LB照射至光碟1 1。又，該光拾取器13, 係可藉.由尋覓馬達而往滑橇方向移動。這些對焦致動器、 尋軌致動器、尋覓馬達，係根據得自受光元件和位置感測 器之訊號，藉由馬達驅動器1 4和伺服手段1 6，控制雷射 光LB的光點落在光碟1 1上的目的場所。 然後，在讀取時，藉由光拾取器13所得之再生訊號 ，被讀取放大器15增幅並予以二値化後，輸入至DVD解 碼器17。所輸入之二値化資料，於該DVD解碼器17中 ，進行8/1 6解調。此外，記錄資料係經過每8位元總結 而調變（8 /1 6調變），該調變中，8位元會轉換成1 6位 元。此時，結合位元，係以使得至此爲止的「1」和「0」 的數量呈平均均等的方式而被附加。此稱爲「DC成份之 控制」，可壓抑經過DC切斷之再生訊號的切片位準變動 〇 經過解調後的資料’會進行去交錯（de-interleave) 和錯誤訂正處理。之後，該資料會被輸入至DVD-ROM解 碼器24，爲了提高資料信賴性而再進行錯誤訂正處理。 如此經過兩次錯誤訂正處理的資料，藉由緩衝管理器23 而暫時積存在緩衝RAM22中，在區段資料到齊的狀態下 ，透過ATAPI/SCSI介面25，一口氣傳送至未圖示的主機 -26- (23) 1300555 電腦。此外，在音樂資料的情況中’來自DVD解碼器1 7 所輸出之資料，會被輸入至D/A轉換器26，以類比的音 訊輸出訊號Audio的方式而取出。 又，在寫入時，從主機電腦通過A TAP 1/SCSI介面25 送來的資料，藉由緩衝管理器23暫時積存在緩衝RAM 2 2 •內。之後，雖然寫入動作開始，但在此情況中，在此之前 必須要令雷射光點落在寫入開始地點。該地點，在 DVD + RW/ + R上，是藉由預先在光碟 Π上以軌道蛇行方 式而預刻之搖擺訊號而求得。 此外，上記地點在DVD-RW/-R上係取代搖擺訊號而 是改爲藉由凸軌預刻坑求得，在DVD-RAM/RAM· WO上 則是改爲藉由預刻坑求得。 DVD + RW/ + R上的搖擺訊號中，含有稱爲 ADIP ( ADress In Pre-groove)的位址資訊’該資訊系藉由ADIP 解碼器1 8取出。又，該AD IP解碼器18所生成之同步訊 號，係被輸入至DVD編碼器20，使得資料的寫入可在光 碟 Η上的正確位置進行。緩衝RAM22的資料，係於 DVD-ROM編碼器21或DVD編碼器20中，進行錯誤訂正 碼的附加或交錯處理，透過雷射控制器1 9、光拾取器1 3 ，以本發明之記錄波形，記錄至光碟1 1。 本發明1 4的記錄再生裝置，因爲具有以下機能：對 於在基板的引導溝內具有搖擺之色素系追記型DVD媒體 ’將最短標記以輸出高於其他標記的脈衝進行記錄，將由 短數來第3以降長度的記錄標記，以一脈衝後端部是被一 -27- 1300555 (24) 定時間高輸出化，且該已高輸出化之脈衝功率是等於第2 短之標記的脈衝功率的脈衝光進行記錄；而在以再生光來 再生該記錄時，在前記標記記錄時，對全部標記的上記脈 衝的後端部以降照射冷卻脈衝，且令該照射光量，在一定 時間爲0.1 mW以下，而進行記錄再生，因此可實現高線 速下的高品質記錄。 又，本發明15之記錄再生裝置，因爲具有以下機能 :將由短數來第3以降長度的記錄標記，以一脈衝的前端 部和後端部兩處是被一定時間高輸出化，且該已高輸出化 之脈衝功率是等於第2短之標記的脈衝功率的脈衝光進行 記錄，因此可更進一步提升高線速下的記錄品質。本發明 1 6之記錄再生裝置，因爲具有以下機能：將對脈衝後端 部以降照射冷卻脈衝的時間，設成最短長度空白的1 /6〜 6/6之長度，因此藉由採用更理想的冷卻脈沖範圍，可更 進一步提升記錄品質。 再者，本發明17之記錄再生裝置，因爲具有以下機 能：將形成前方空白長爲最短長之標記的記錄脈衝列的開 頭加熱脈衝寬度，以該標記的長度是否爲最短長來加以區 別，而將最短長標記的開頭加熱脈衝寬度，設定成長於非 最短長標記的開頭加熱脈衝寬度；且，將形成最短長標記 之記錄脈衝列的開頭加熱脈衝寬度，以該最短長標記的.前 方空白長是否爲最短長來加以區別，而將前方空白長爲最 短之標記的開頭加熱脈衝寬度，設定成短於前方空白長爲 非最短之標記的開頭加熱脈衝寬度，因此可實現局品質記 -28- 1300555 (25) 錄，亦即低顫動化。 又，位址資訊的取得方式，亦可爲根據凸軌預刻坑或 預刻坑來取得位址資訊的方式。 圖11係使用了圖所不光碟驅動器之資訊處理裝置 的槪略圖。資訊處理裝置50，係具備主控制裝置51、介 面52、記錄裝置53、輸入裝置54及顯示裝置55。 主控制裝置51，係含有CPU (中央處理裝置、微電 腦）、主記憶體（皆未圖示）等而構成，是控制主機電腦 的整體運作。 介面52，係屬於和光碟驅動器進行雙向通訊的介面 ，是依照ATAPI及SCSI等標準的介面。介面52係和前 樹脂光碟驅動器的ATAPI/SCSI介面25相連接。此外， 各介面間的連接形態，並非只是使用通訊纜線（例如 SCSI纜線）等通訊線的纜線連接，亦可爲使用紅外線之 無線連接。 記錄裝置53 ( HDD、硬碟）內，存放著以能夠被主 控制裝置5 1的微電腦解讀之程式碼所撰寫成的程式。此 外，一旦資訊處理裝置的電源呈ON狀態，則前記程式會 被載入主控制裝置5 1的主記憶體。 顯示裝置55，例如係具備CRT、液晶顯示器（LCD )、電漿顯示器（PDP)等顯示部（圖示省略），顯示來 自控制裝置的各種資訊。 輸入裝置54，例如係具備鍵盤、滑鼠、指標裝置等 其中至少一者之輸入媒體（圖示省略），將來自使用者所 -29- 1300555 (26) 輸入之各種資訊通知至主控制裝置5 1。又，顯示裝置和 輸入裝置一體化者有例如付有觸控面板的CRT等。又， 資訊處理裝置係搭載著作業系統（0S )。然後，構成資 訊處理裝置的所有裝置是受到〇 S所管理。 若根據本發明，則可對色素系追記型D V D媒體，以 任意線速度都能進行低顫動、低錯誤率的記錄，可以較 DVD-R上所用之凸軌預刻坑格式更爲簡易就能製造之高 頻搖擺格式來有效率地實施資料部的追記。而且，可對幾 乎相同於目前已經大量製造的CD-R、CD-RW的同一格式 之色素系追記型DVD媒體進行記錄。 【實施例】 以下將就實施例和比較例來更具體說明本發明，但本 發明並非侷限於這些實施例。 實施例1〜9、比較例1〜6 在具有：溝深1 660A，半値寬 0.38 // m，軌道間距 0.74 //m，搖擺頻率相當於 32T之厚度 〇.6mm、外徑 12 0mm之射出成形聚碳酸酯基板上，將下記化合物1和 化合物2之色素化合物以重量比65:3 5秤量之，溶解於 2,2,3,3-四氟-1-丙醇中然後旋轉塗佈，形成厚度900A的 有機色素層後，以8 5 °C乾燥3 0分鐘。 其次，藉由濺鍍法設置厚度1 1〇〇A的Ag反射層，更 於其上設置丙烯酸系光聚合物所成之厚度的保護層 -30- 1300555 (27) 後，將厚度0.6mm、外徑120mm之射出成形聚碳酸酯平 板基板，以丙烯酸系光聚合物予以接著而得光記錄媒體。
化合物2 <記錄再生條件> 對上記光記錄媒體，使用振盪波長660nm、束徑0.9 //m之半導體雷射光，一邊尋軌一邊將EFM訊號（最小 凹坑長約0.4 // m )，以下記表2所示的記錄條件和記錄 線速，以Bottom Jitter (底端顫動）呈極小的記錄功率進
行記錄，將該地點予以再生而求出顫動値、非對稱性、PI 錯誤數。此外，記錄雷射光的波形係如同圖4〜圖9所示 。又，W0係最短長標記的脈沖功率，W 1係第2短標記的 功率或由短數來第3以降之長度的標記的追加功率，W2 -31 - 1300555 (28) 係由短數來第3以降之長度的標記的無追加功率。再者， 線速21m/s和2 8m/s的脈沖長，雖然使用圖4〜圖9所示 的脈沖長，但本發明並非侷限於此。 又，比較例1中，比較例1中，令冷卻脈沖部的光量 爲〇 . 7m W和再生光功率相同。亦即是不存在冷卻脈沖的 記錄波形。比較例2中，令冷卻脈沖部的光量爲0.4 m W 是大於本發明者。比較例3中，和比較例1同樣地沒有冷 卻脈沖，而使記錄線速爲高線速。實施例8係將冷卻脈沖 長設成0.4T是爲短於本發明最短空白長3T的1/6，亦即 短於〇 . 5 T之例子。 -32- 1300555 (29)
表l 校正 莲 擗 VO (Ν Ο 00 卜 00 r-H m ίο ο 0.01 Ο 0.01 〇 V-H 〇 S g ο Ο o o ο o 〇 O ο ! 顫動 00 Os οό (Ν c^ 寸 t-: o 卜· On 卜· 卜 卜· ON 卜· Ξ r—( > S g o rsj s s S τ—^ Η 1-Η ▼—H f—H ^"H τ··^ (N ^Γ\ • § νο § JQ JQ tn s g ^μΗ ^-Η ι*Η ▼-H S： m η V—Η κη ΟΟ 〇 Ο CN o (N to (N 〇 (N 寸 O o o Ο m ^ ;<n 变. 史彡 fjf ε ο ο ο O 〇 o 卜 o 寸 o 卜 Ο 受 a 1 a 00 r-N ΟΝ v〇 /^S /^N 骧 ^ 瀠 s _ _ 醒 B _ 画 画 s 囫 囫 囫 'Nw^ v-h (N m (Ν m m 寸 »n VO m 卜 m 00 f—^ (N m m 囊 m M 蓉 M s 1¾ κ S a 舾 IK w: ±Λ JJ j-j -1A -33- 1300555 (30) .由上記表2可知’實施例1〜8，相較於比較例 ，顫動、非對稱性皆較爲良好，PI錯誤也非常地優異 又’封上記光記錄媒體，使用振盪波長660nm、 0.9/iin之半導體雷射光，—邊尋軌一邊將Efm訊號 小凹坑長約0.4 // m )，以下記表3所示的記錄條付 錄線速，且在有表1校正的條件下，求出顫動値、與 性、PI錯誤數。 此外，比較例4〜6中，使用DVD-R上所實施茫 格式的LPPb的大小互異（有改變）之試作條件的g 成形基板，以相冋於貫施例的作成條件來作成光記if ’並進行和實施例同樣的評估。 束徑 (最 和記 對稱 LPP 模和 媒體 -34- (31)1300555 LPPb 値 0.10 0.24 0.37 PI錯誤 卜 00 510 非對稱性 0.00 0.00 0.00 0.00 顫動 ON 卜· Ο) 2 〇 00 W0/W1 1.05 1.05 S 1.05 W1/W2 1.60 1.60 1.60 1.60 冷卻脈沖長 (T) 脈沖後端冷卻功率 (mW) 〇 〇 〇 〇 記錄線速 (m/s) 21 (圖 8) 21 (圖 8) 21 (圖 8) 21 (圖 8) 實施例9 比較例4 比較例5 比較例6 1300555 (32) 由上記表3可知，在LPP格式的樣本中，LPPb越大 ，則即使顫動良好而PI錯誤也會增加。又，我們確認到 如比較例4般若LPPb値低於0.16以下之位準，則在已經 實用的裝置上是無法偵測出位址。 【圖式簡單說明】 〔圖1A〕通常之追記型光記錄媒體之層構成例圖。 〔圖1B〕通常之追記型光記錄媒體之其他層構成例 圖。 〔圖1C〕通常之追記型光記錄媒體之其他層構成例 圖。 〔圖1 D〕通常之追記型光記錄媒體之其他層構成例 圖。 〔圖2A〕通常之CD-R媒體之層構成例圖。 〔圖2B〕通常之CD-R媒體之其他層構成例圖。 〔圖2C〕通常之CD-R媒體之其他層構成例圖。 〔圖3A〕色素系追記型DVD媒體之層構成例圖。 〔圖3B〕色素系追記型DVD媒體之其他層構成例圖 〇 〔圖3C〕色素系追記型DVD媒體之其他層構成例圖 〇 〔圖4〕該當於記錄線速28m/s用之本發明1的功率 控制波形的先前例圖。 〔圖5〕該當於記錄線速28m/s用之本發明2的功率 -36· 1300555 (33) 控制波形的先前例圖。 〔圖6〕該當於記錄線速28m/s用之本發明1的功率 控制波形例圖。 〔圖7〕該當於記錄線速28m/s用之本發明2的功率 控制波形例圖。 〔圖8〕該當於記錄線速21m/s用之本發明1的功率 控制波形例圖。 〔圖9〕該當於記錄線速21m/s用之本發明2的功率 控制波形例圖。 〔圖1 〇〕光碟驅動器之要部構成一例的機能方塊圖 〇 〔圖11〕使用了圖10所示之光碟驅動器的資訊處理 .裝置的槪略圖。 【主要元件符號說明】 1 :基板 2 :記錄層 3 :下拉層 4 :保護層 5 :硬覆層 6 :反射層 7 =保護基板 8 :接著層 1 1 :光碟 -37· 1300555 (34)
1 2 :轉軸馬達 1 3 :光拾取器 1 4 :馬達驅動器 1 5 :讀取放大器 1 6 :伺服手段 1 7 : DVD解碼器 1 8 : ADIP解碼器 1 9 :雷射控制器 20 : DVD編碼器 21 : DVD-ROM 編碼器
22 :緩衝RAM 23 :緩衝管理器 24 : DVD-ROM 解碼器 25 : ATAPI/SCSI 介面 26 : D/A轉換器
27 ： ROM
28 ： CPU 29 ： RAM LB :雷射光
Audio :音訊輸出訊號 50 :資訊處理裝置 5 1 :主控制裝置 52 :介面 53 :記錄裝置 -38- 1300555 (35) 54 :輸入裝置 5 5 :顯示裝置
-39 -

Claims (1)

  1. (1) 十、申請專利範圍 第93 1 25 546號專利申請案 中文申請專利範圍修正本 民國95年9月1日修正 1·一種色素系追記型DVD媒體之記錄再生方法，其 特徵爲，對於在具有設置搖擺（wobble )之引導溝的基板 上所形成之以有機色素爲主成份的記錄層，將最短標記以 輸出高於其他標記的脈衝進行記錄，將由短數來第3以降 長度的記錄標記，以一脈衝後端部是被一定時間高輸出化 ® ’且該已高輸出化之脈衝功率是等於第2短之標記的脈衝 功率的脈衝光進行記錄；在標記記錄時，對全部標記的上 ~ 記脈衝的後端部以降照射冷卻脈衝，且令該照射光量，在 · 一定時間爲0.1 mW以下。 2·如申請專利範圍第1項之記錄再生方法，其中，將 由短數來第3以降長度的記錄標記，以一脈衝的前端部和 後端部兩處是被一定時間高輸出化，且該已高輸出化之脈 衝功率是等於第2短之標記的脈衝功率的脈衝光進行記錄 · 〇 3 ·如申請專利範圍第1項之記錄再生方法，其中，將 對脈衝後端部以降照射冷卻脈衝的時間，設成最短長度空 白的1/6〜6/6之長度。 4.如申請專利範圍第1項之記錄再生方法，其中，將 形成前方空白長爲最短長之標記的記錄脈衝列的開頭加熱 脈衝寬度，以該標記的長度是否爲最短長來加以區別，而 1300555 (2) 將最短長標記的開頭加熱脈衝寬度，設定成長於非最短長 標記的開頭加熱脈衝桌度，且’將形成最短長標記之記錄 脈衝列的開頭加熱脈衝寬度，以該最短長標記的前方空白 長是否爲最短長來加以區別，而將前方空白長爲最短之標 記的開頭加熱脈衝寬度，設定成短於前方空白長爲非最短 之標記的開頭加熱脈衝寬度。 5 -如申請專利範圍第1項之記錄再生方法，其中，前 記搖擺係爲高頻搖擺，該高頻搖擺（wobble )，係設定成 令基本時脈週期爲T時相當於4T〜9 6T之頻率。 6.如申請專利範圍第1項之記錄再生方法，其中，將 高頻搖擺的振幅（Wo )，和藉由2分割光偵測器進行軌 道錯誤偵測控制所需之軌道錯誤偵測訊號的推挽振幅（PP )的比値「Wo/PP」，是以O.lSWo/PPSO.4之範圍而同 步契合。 7 ·如申請專利範圍第1項之記錄再生方法，其中，記 錄光的波長爲600〜720nm。 8 ·如申請專利範圍第1項之記錄再生方法，其中，相 對於記錄光及再生光的波長±5nm之波長帶的光，記錄層 單層的折射率η爲1.5$η$3·0，且消光係數k爲0.02Sk $ 0·2。 9.如申請專利範圍第1項之記錄再生方法，其中，記 錄層的分解開始溫度爲100〜3 60 °C。 1 0 .如申請專利範圍第1項之記錄再生方法’其中， 光記錄媒體是在基板上，做爲除了記錄層以外的構成層， -2- 1300555
    具有：反射層、保護層、接著層、保護基板、基板面硬覆 層從中選擇至少一層。 11 ·如申請專利範圍第1 〇項之記錄再生方法，其中， 反射層是由金、銀、鋁之任一，或這些爲主成份之合金。 12·如申請專利範圍第10項之記錄再生方法，其中， 保護層是由紫外線硬化樹脂所成。 13·如申請專利範圍第10項之記錄再生方法，其中， 將兩片基板貼合而成爲雙面構成之記錄媒體所須之接著層 是被設置在該基板間，且該接著層所用的接著劑是紫外線 · 硬化樹脂。 14.一種記錄再生裝置，其特徵爲，具有以下機能： ’ 對於在基板的引導溝內具有搖擺之色素系追記型DVD媒 - 體，將最短標記以輸出高於其他標記的脈衝進行記錄，將 由短數來第3以降長度的記錄標記，以一脈衝後端部是被 一定時間高輸出化，且該已高輸出化之脈衝功率是等於第 2短之標記的脈衝功率的脈衝光進行記錄；在標記記錄時 ，對全部標記的上記脈衝的後端部以降照射冷卻脈衝，且 ® 令該照射光量，在一定時間爲0.1 mW以下，而進行記錄 再生。 1 5 .如申請專利範圍第1 4項之記錄再生裝置，其中， 具有以下機能：將由短數來第3以降長度的記錄標記，以 一脈衝的前端部和後端部兩處是被一定時間高輸出化，且 該已高輸出化之脈衝功率是等於第2短之標記的脈衝功率 的脈衝光進行記錄之機能。 -3- 1300555 (4) 1 6 ·如申請專利範圍第1 4項之記錄再生裝置，其中， 具有以下機能：將對脈衝後端部以降照射冷卻脈衝的時間 ，設成最短長度空白的1/6〜6/6之長度。 1 7 ·如申請專利範圍第1 4項之記錄再生裝置，其中， 具有以下機能：將形成前方空白長爲最短長之標記的記錄 脈衝列的開頭加熱脈衝寬度，以該標記的長度是否爲最短 長來加以區別，而將最短長標記的開頭加熱脈衝寬度，設 定成長於非最短長標記的開頭加熱脈衝寬度；且，將形成 最短長標記之記錄脈衝列的開頭加熱脈衝寬度，以該最短 長標記的前方空白長是否爲最短長來加以區別，而將前方 空白長爲最短之標記的開頭加熱脈衝寬度’設定成短於前 方空白長爲非最短之標記的開頭加熱脈衝寬度。 -4-
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