1253631 玫、發明說明· t發明所屬技術销域]| 發明領域 本發明係關於一種推挽波形測量裝置及方法，該光碟 5 具有一執線’該執線係由一主區於其中寫入資訊信號、以 及一浮凸區其帶有預成形凹坑組成。 發明背景 如 CD-R、CD-RW、DVD-R、DVD-RW及 DVD-RAM 等 10 光碟目前已知作為資訊信號可寫式光學記錄媒體。此外， 也已經製造出記錄以及再生此種光碟之資訊資料之資訊讀 寫裝置。 第1圖為視圖顯示作為此種光碟範例之DVD-RW之區 域組成。 15 如第1圖所示，D V D - RW具有一種資料結構，該資料結 構由光碟之内周側至外周側，包含一pcA(功率校準區）、一 RMA(記錄管理區）、_領人區、料區以及—領出區。 PCA為測定雷射束記錄功率時進行測試寫人區，RMA為寫 入5己錄相關官理貧訊區域。浮凸區係成形於領人區之一部 2〇分。浮凸區有相位凹坑，其預先成形於光碟上，防止拷貝 等之相關資訊可記錄於浮凸區。 第2圖為視圖顯示此種可錄式光碟之記錄面之一部分。 一如第2圖所示，有凸面溝槽執線1〇3其中成形保有資訊 貝料用之貝g凹坑(記號)Pt，該溝槽執線1G3與凹面陸地執 1253631 線102係以螺旋狀或同心形狀交替成形於光碟基板ιοί上。 此外複數個LPPs(陸地前置凹坑）1 〇4係成形於毗鄰溝槽執 線103間。LPPs 104預先設置於陸地軌線102上，俾於藉光 碟記錄器記錄資訊資料時，使用記錄時序及位址。 5 具有LPPs之回放光碟用之光碟播放器設置有LPP债測 電路。LPP偵測電路係由二進制電路組成，其中來自光碟之 反射束係精拾取頭接收’例如精光偵測杰於軌線之切線方 向一分為二，因而獲得來自光偵測器之輸出信號之差異信 號，換言之獲得徑向推挽信號PP。推挽信號pp具有第3圖所 10 示波形，LPP分量係由推挽信號PP凸起。如此經由比較推 挽信號PP與臨限值TH之位準，產生指示偵測得LPPs之前置 凹坑偵測信號PPD。 15 如第4圖所示，推波形之位準變化係於對應Lpp之各個 拾取讀取位置，於前置凹坑偵測信號PPd產生。同步脈衝 PsYNC出現於各個週期丁係存在於前置凹坑偵測信號ρρ〇，如 第4圖所示。於同步脈衝PSYNG之後，簡定間隔存在有二 前置資料脈衝，但此等資料脈衝並非經常性存在於各個週 期供表現（例如位址）。如第4圖所示，來自同步脈衝匕實 之第二位置之脈衝為財輕位址之前置㈣脈衝Pd。當 欲記錄資訊於光碟時，f訊的記錄係經由基於前置凹坑備 測信號PPD偵測光碟位址進行。 要求包括LPPS之光碟製造商製造之光碟之Lpps須滿足 標準。光準Ln纽於光，同時也係有 關貝afl區之/f凸區。此種光碟包括整個浮凸區係、由一個無 20 1253631 法讀取部分組成之光碟（例如DVD-RW 10版）；以及其中浮 凸區係由可讀取部分以及不可讀取部分由光碟内側循序組 成之光碟（例如DVD_RW U版），如第5圖所示。根據此種 DVD-RW 1.1版，176控制資料區塊位於組成可讀取部分之 5浮凸區内側（稱作為控制資料區段），以及16個隨後之伺服區 塊組成無法讀取部分。此外根據DVD-RW 1.1版光碟，可讀 取部分係以深相位凹坑記錄，該凹坑可讀取防止拷貝相關 資’如此於大部为光碟上皆無任何Lpp形成於此種可讀取 部分之毗鄰執線間。無法讀取部分係由淺相位凹坑形成， 10俾便防止資机被過度寫入以及記錄於正在被讀取之區域 上’如此LPP類似成形於資料區之就鄰軌線間之Lpp，係成 形於此種無法讀取部分之毗鄰軌線間。無法讀取部分之 LPPs設置供決定資料區位址，由初始位置，該資料區係位 在比無法讀取部分更朝向光碟外側位置。 15 為了決定是否滿足標準，必須測定有關下列各部分之 推挽信號PP之信號波形，該信號係有關溝槽區（其為具有溝 槽軌線之主區’如苐2圖所示，且包括資料區）、浮凸區之 可讀取部分以及浮凸區之不可讀取部分。需要有效測量， 因此需進行此種測量’包括介於浮凸區與溝槽區間之起點 20 邊界部分以及終點邊界部分。 【發明内容】 發明概要 如此本發明之一目的係提供一種推挽波形測量裝置及 方法，其中就作為測量主題之光碟各部分而言，包括浮凸 1253631 區與主區間之邊界部分’可有效進行推挽信號波形測定。 本發明之推挽波形測量裝置為一種供具有一軌線之光 碟用之裝置，該軌線包括一主區，於其中記錄資訊信號， 以及一浮凸區具有預成形之凹坑’該裝置包含：光偵測裝 5置，其設置有一光接收面，該光接收面被劃分為該接收面 於軌線切線方向劃分為一第一光接收面以及一第二光接收 面，供於第一光接收面及第二光接收面接收照射至該執線 之光束之反射光，俾根據於第一光接收面及第二光接收面 接收之光數量，而輸出一第一光偵測信號以及一第二光偵 10測信號；減法裝置’其係供計算光偵測裝置輸出之第一光 偵測信號與第二光偵測信號間之差異俾產生一推挽信號； 規定裝置，其係用以規定主區之預定位置、浮凸區之起點 邊界位置以及浮凸區之終點邊界位置中之一個位置；移動 控制裝置，其係供移動光束照射位置至由該規定裝置規定 15 之位置；播放裝置，其係供藉移動控制裝置移動光束照射 位置後，設定追蹤伺服系統於停止態，供播放該光碟；以 及顯示控制裝置，其係供顯示推挽信號波形於顯示裝置。 本發明之推挽波形測量方法為一種供具有一執線之光 碟用之方法’该軌線包括一主區，其中記錄資訊信號，以 20及一具有預成形凹坑之浮凸區，該方法包含：一光摘測步 驟，供接收照射於光接收面執線之反射光，該光接收面被 劃分為該接收面於軌線切線方向劃分為一第一光接收面以 及一第二光接收面，以及根據於第一光接收面及第二光接 收面各自接收之光數量，輸出第一光偵測信號及第二光偵 1253631 測信號；一減法步驟，該步驟係計算由光偵測步驟輸出之 第一光偵測信號與第二光偵測信號間之差異，俾產生一推 挽信號；一規定步驟，該步驟係供規定於主區之預定位置、 浮凸區之起點邊界位置、以及浮凸區之終點邊界位置中之 5 一個位置；一移動控制步驟，該步驟係供移動光束照射位 置至規定步驟所規定之該位置；一播放步驟，其係供於光 束照射位置藉移動控制步驟移動後，設定追蹤伺服系統為 停止狀態，供播放光碟；以及一顯示控制步驟，其係供顯 示該推挽信號波形於顯示裝置上。 10 圖式簡單說明 第1圖為視圖顯示DVD-RW各區之校準； 第2圖為視圖顯示DVD-RW記錄面之組成； 第3圖為視圖顯示包含LPP分量之徑向推挽信號波形； 第4圖為視圖顯示前置凹坑偵測信號之波形圖； 15 第5圖為視圖顯示浮凸區之可讀取部分及不可讀取部 分； 第6圖為方塊圖，顯示根據本發明之波形測量裝置； 第7圖為方塊圖顯示於第6圖裝置之頭放大器及前置凹 坑偵測電路之結構； 20 第8圖為方塊圖顯示第6圖裝置之示波器之示意組成； 第9圖為流程圖顯示藉個人電腦進行波形測量操作； 第10A至10C圖為視圖圖解說明經由第9圖之波形測量 操作結果顯示於示波器之波形範例； 第11圖為流程圖顯示浮凸區之起點邊界位置之移動操 1253631 作； 作； 第12圖為流程圖顯示浮凸區之終點邊界位 置之移動操 第13圖為流程圖顯示浮凸區之起點邊界位 5 作； 矛夕動操 第14圖為流程圖顯示浮凸區之終點邊界位 κ移動操 作； 第15圖為流程圖顯示浮凸區之起點邊界位置之移動摂 作；以及 $ 10 第16圖為流程圖顯示浮凸區之終點邊界位置之移動押 作。 ’、 I：實施方式3 較佳實施例之詳細說明 後文將參照附圖說明本發明之具體實施例之細節。 15 第6圖圖解說明波形測量裝置，其中採用根據本發明之 浮凸區偵測裝置。此種波形測量裝置包含於讀寫頭2包含一 記錄束產生裝置（圖中未顯示），其係供記錄資訊資料於只寫 一次或可改寫之光碟丨上，光碟丨具有記錄面如第2圖所示； 一讀取束產生裝置（圖中未顯示），其係供由光碟〗讀取記錄 20的資訊（包括資訊資料）；以及一象限光偵測器（第7圖符號 20)。 記錄束產生裝置及讀取束產生裝置無需分開設置，反 而可設置成單-光束產生裝置，該裝置於記錄期間產生記 錄光束、以及於讀取期間產生讀取光束。 10 !25363l 項取束產生置以讀取束照射光碟卜光仙系藉主軸 馬達9而旋轉驅動，因而形成資訊讀取點於記錄面上。如第 7圖所示，象限光偵測器20係由光電轉換元件組成，光電轉 換元件具有光接收面2〇a至施於光碟丄之資訊記錄軌線（溝 5槽軌線1〇3)之切線方向以及於記錄執線切線乏正交方向一 分為四。此種光電轉換元件接受光碟1±四個光接收面篇 至2〇d各自之資訊讀取點之反射光，且將各反射光轉成電信 號’輸出作為光接收信號Ra至Rd。 伺服控制裝置4分別基於光接收信號RasRd而產生一 1〇焦點錯誤信號、一追蹤錯誤信號以及一滑件驅動信號。焦 點錯誤信號供給架設於讀寫頭2之聚焦致動器（圖中未顯 示）。聚焦致動器基於焦點錯誤信號而調整資訊讀取點之焦 點。追蹤錯誤信號供給架設於讀寫頭2之追蹤致動器（圖中 未顯示）。追蹤致動器係基於追蹤錯誤信號，而調整於光碟 15徑向方向之資訊讀取點形成位置。滑件驅動信號供給滑件 1〇。滑件ίο係於光碟徑向方向於對應滑件驅動信號速度而 移動讀寫頭。 光接收信號Ra至Rd也供給頭放大器25，頭放大器25具 有加法器21至23及減法器24。加法器21將光接收信號Ra、 20 Rd相加，加法器22將光接收信號Rb、Rc相加。特別，加法 器21係將藉象限光偵測器20之光接收面20a及20d接收光戶斤 得之光接收信號Ra及Rd相加，而輸出累加光接收信銳 Ra+d。加法器22係將藉象限光偵測器20之光接收面2〇b及 2〇c接收光所得之光接收信號Rb及RC相加，而輸出累加光冲妾 1253631 收信號Rb+c。 加法器23將得自加法器21、22之輪出信號Ra+d及Rb+c 相加。來自加法器23之輸出信號為讀取信號，或為尺]^^信號， 供給資訊資料再生電路30及位址彳貞測電路5〇。資訊資料再 5生電路30將讀取信號二進制化，然後連續實施解調處理、 錯决修正處理以及各型資訊解密處理，因而再生且輸出記 錄於光碟1之資訊資料(影像資料、音頻資料、電腦資料）。 LPF 27係連結至加法器23之輸出。LPF 27係由加法器 23提取輸出RF信號之低頻分量（例如3〇 kHz或以下），且將 1〇 此分量輸出作為RF直流分量信號。 減法器24由得自加法器21之輸出信號Ra+d扣除加法器 22之輸出信號Rb+c。減法器24之輸出信號變成一種信號， 該信號指示因前述溝槽軌線103晃動所致頻率，且供給主軸 馬達9之主軸伺服裝置26。主軸伺服裝置26旋轉驅動主軸馬 15達9,讓得自減法器24之輸出信號頻率設定於對應於預定轉 速頻率。主軸伺服馬達26之組成已經揭示於日本專利申請 公開案第H10-283638號，後文將刪除其細節說明。 如第2圖所示，前置凹坑偵測電路5偵測陸地前置凹坑 (LPP)104，LPP 1〇4係基於得自加法器21、22之各別輸出信 20號成形於光碟1之陸地軌線(前置凹坑執線）102上；以及然後 對記錄處理電路7及位址偵測電路51供給前置凹坑偵測信 號 PPd。 記錄處理電路7基於前置凹坑偵測信號PPd，證實讀寫 頭2目前正在進行記錄位置，或溝槽執線1〇3位置，且對伺 12 1253631 服控制裝置4供給控制信號，用以讓讀寫頭2進行由此記錄 位置跳至預定靖位置的執線跳階。記錄處理祕7也對欲 記錄資訊資料進行預定記錄調變處理，因而產生記錄調變 資料信號’該信號供給讀寫頭2。轉於讀寫即之記錄光 束產生裝置，係根據此種記錄調變資料信號產生記錄光 束，該記錄光束照射於光碟i之溝槽軌線1〇3上。如此傳熱 至被記錄光束照射之溝槽執線103該區’因而於此區徐緩形 成資訊凹坑（記號）。 記錄處理電路7之組成也揭示於日本專利申請公開案 10第H10-283638號，於此處刪除其進一步說明。 如第7圖所示，前置凹坑偵測電路5係由下列組成元件 組成··一放大器31供放大來自加法器21之輸出信號Ra+d， 一放大器32供來自加法器22之輸出信號Rb+C，一減法器33 供由放大姦31之輸出信號扣除放大器32之輸出信號，以及 15然後輸出其值，以及一二進制化電路34，其係供於臨限值 TH二進制化減法器33輸出信號，因而產生前述前置凹坑偵 測信號PPD。放大器31之增益G1以及放大器32之增益G2設 疋為Gl=G2。 於讀寫頭2，減法器33輸出之信號供給LPF 35之前述二 2〇 進制電路34。LPF 35提取推挽信號PP之低頻分量而產生推 挽信號PP。 RF信號、RF直流分量信號及推挽信號PP供給示波器 61 〇 示波器61分別輸入RF信號、RF直流分量信號及推挽信 13 I25363l 唬pp，將此等信號抽樣且顯示其波形。個人電腦（後文稱之 為PC)62連結至示波器61。個人電腦62之特定組成並未圖式 說明，但至少包含一個CPU以及内部記憶體。 個人電腦62與示波器61間之連結例如係基於介面標準 5 如 GHB、10BASE-T、或RS-232C。 示波器61例如可如第8圖所示組成。換言之示波器61 包含一 A/D轉換器91、一控制電路92、抽樣記憶體93、顯示 圮憶體94、X及Y驅動器95、96、一顯示面板97、一操作單 元98、以及一介面99。A/D轉換器91將三個輸入類比信號轉 1〇成數位信號。控制電路％連續將A/D轉換器91所得數位信號 之抽樣資料寫入抽樣記憶體93，以及由抽樣記憶體93讀取 欲顯示之資料，將此等資料寫入顯示記憶體94，然後佈置 此等資料。顯示§己憶體94包含對應顯示面板97各個像素之 儲存位置。X及Y驅動器95、96根據寫入顯示記憶體94之資 15料，而驅動顯示面板97，故輸入類比信號波形顯示於顯示 面板97。介面99為例如基於介面標準如GpiB、1〇BASE_T、 或RS-232C供連結至個人電腦62,且透過控制電路92將寫於 抽樣δ己憶體93之資料寫至個人電腦92。介面99也中繼由個 人電腦62至控制電路92之指令。 〇 如第9圖圖解說明於此種組成之波形測量裝置，個人電 腦62對光碟丨開始再生操作（步驟S1)。於此再生操作中，伺 服系、、先例如主軸伺服、追蹤伺服、及焦點伺服全部皆關閉， 俾致此藉讀寫頭2由光碟丨讀取。然後來自讀寫頭2之讀取光 束移動至照射位置(讀取位置），該位置係光碟上半徑25毫米 14 1253631 位置（步驟S2)。換言之，於光碟1之溝槽區，讀取束係藉軌 線之跳移而移動至照射位置。當讀取束已經移動至照射位 置時，單獨追蹤伺服系統被開啟(追蹤伺服控制被中止），因 而繼續藉讀寫頭2由光碟1讀取(步驟S3)。經由開啟追蹤伺服 5系統，沿溝槽執線之蹤跡消失，如此讀取束照射於光碟1之 照射位置根據光碟1之偏心量而於徑向方向起伏波動。然後 推挽h號!^、RF#號及rf直流分量信號波形顯示於示波器 61(步驟S4)。推挽信號pp之振幅ppb(AC^RF直流分量信號 之直流位準ppb(DC)之比ppb(AC)/ppb(DC)計算作為ppb(步 10驟S5)。例如個人電腦62由示波器讀取推挽信號PP之振幅 ppb(AC)及RF直流分量信號之直流位準ppb(DC)，而求出 ppb=ppb(AC)/ppb(DC)。 個人電腦62係設定為游標（參考線)係位在示波器61顯 示畫面之推挽信號PP振幅中心（步驟S6)。此步驟可依據來 15 自個人電腦62之指令進行或可人工進行。換言之如第10A 圖圖解說明，游標移動讓推挽信號PP振幅中心設定於〇位準 (舉例）。 當個人電腦62完成於溝槽區之測量時，判定此種波形 測量是否為光碟1之浮凸區之起點邊界位置或終點邊界位 20 置之測量值（步驟S7)。使用者可利用輸入操作執行此項判 定。若測量被判定為光碟1浮凸區起點邊界位置之波形測量 值，則來自讀寫頭2讀取束之照射位置移動至光碟1浮凸區 之起點邊界位置（步驟S8)。此種步驟S8之移動容後詳述。 移動至浮凸區之起點邊界位置後，單獨追蹤伺服系統 15 1253631 開啟而繼續藉讀寫頭2由光碟1讀取(步驟S9)，此時推挽信號 PP、RF信號&RF直流分量信號波形各自係顯示於示波器 61(步驟S10)。步驟S9及S10係類似前述步驟S3及S4。例如 如第10B圖所示，推挽信號PP、RF信號及RF直流分量信號 5波形同時以同一時間基準顯示於示波器61之顯示畫面上。 由此項顯示可知，讀取束於光碟1之照射位置係根據光碟！ 之偏心量而於光碟徑向方向起伏波動，包括溝槽區與浮凸 區可f買取部分間之邊界。 個人電腦6 2測定介於可讀取部分與溝槽區間邊界部分 10 之推挽信號PP之正振幅（零或零以上之振幅位準）PPi以及負 振幅（零或零以下之振幅位準)ppj(步驟S11)。正振幅PPi及負 振幅PPj可對邊界部分之全部波形決定其數值，或可測定其 最小值。測得之正振幅PPi及負振幅PPj相對於各區之RF直 流分量信號之直流位準之比計算如後： 15 | PPi I =PPi/ppb(DC) I PPj I =PPj/ppb(DC) 如此計算之I PPi I及I PPj I藉ppb於前述25毫米半 徑位置規度化(步驟S12)。換言之求出I PPi丨/ppb及I PPj I /ppb。根據DVD-RW標準須滿足 I PPi I /ppb>0.2及 I PPj I 20 /ppb>0 o 若於步驟S7，個人電腦62決定波形測量為光碟1浮凸區 終點邊界之波形，則來自讀寫頭2之讀取束之照射位置移動 至光碟1浮凸區之終點邊界位置（步驟S13)。步驟S13之移動 說明如後。移動至浮凸區之終點邊界位置後，單獨追蹤伺 16 1253631 服系統開啟而藉讀寫頭2由光碟1連續讀取(步驟S14)，此時 推挽信號PP、RF信號及rF直流分量信號波形各自顯示於示 波器61(步驟S15)。步驟S14及S15係類似前述步驟S3&S4。 例如如第10C圖所示，推挽信號pp、rf信號及RF直流分量 5 信號波形同時於相同時間基準顯示於示波器61之顯示畫面 上。讀取束於光碟1之照射位置係根據光碟丨之偏心而於光 碟徑向位置起伏波動，包括浮凸區可讀取部分與不可讀取 部分邊界、以及不可讀取部分與溝槽區間之邊界。不可讀 取部分於光碟徑向方向狹窄，因此當沿溝槽軌線之蹤跡因 10追蹤伺服系統之開啟而消失時，可讀取部、不可讀取部及 溝槽區接受讀取。 個人電腦62測定於可讀取部與不可讀取部間邊界部 分，推挽信號PP之正振幅PPi及負振幅PPj ;以及測定介於 不可讀取部分與溝槽區間之邊界部分，推挽信號pp之正振 15幅PPi及負振幅PPj(步驟S16)。步驟S16類似步驟S11。然後 於各邊界測得之正振幅PPi及負振幅PPj分別藉ppb規度化 (步驟S12)。 現在將說明步驟S8之操作，讀取束照射位置移動至光 碟1浮凸區之起點邊界位置。 20 個人電腦62就第11圖所示光碟1開始再生操作（步驟 S21)。步驟S21之操作係以類似步驟si之方式進行，再生位 置始於光碟1之比浮凸區更内側位置。個人電腦62讀取位址 積測電路50偵測得之位址（步驟S22)。位址偵測電路50及位 址債測電路51皆為基於來自頭放大器25之輸出信號而偵測 17 1253631 :二二^ 之電路。位址偵測電路50根據_ 5 10 15 =測項取束照射位置位址，位址偵測電路51根據前置凹 坑债測信號PPd偵測讀取束照射位置位址。個人電腦幻 照射位置位址Μ為可讀取部分之預定起點位址（步驟 ⑵）。㈣取光束照射位置位址非為可讀取部分起點位 址，則再度讀取讀取光束照射位置位址。若讀取光束照射 位置位址為可讀取部分之起點他，财彳定讀取光束照射 位置已經移動至光碟i之浮凸區的起點邊界位置。 現在將說明步驟S13之操作，將讀取光束照射位置移動 至光碟1浮凸區之終點邊界位置。 個人電腦62就光碟i開始再生操作，如第12圖所示（步 驟S31)。步驟S31之操作係以類似步驟si進行，再生位置始 於光碟1上比浮凸區後方溝槽區更内側位置。個人電腦幻讀 取位址㈣電路51侧得之位址(步驟S32)。然後個人電腦 62決定照射位置位址是否為不可讀取部分内部之預定位址 (步驟S33)。若讀取光束照射位置位址非為不可讀取部分内 口P位址，則5賣取光束照射位置位址再度被讀取。若讀取光 束照射位置位址為不可讀取部分内部位址，則判定讀取光 束妝射位置已經移動至光碟1浮凸區之終點邊界位置。 於第11及12圖，浮凸區之起點邊界位置及終點邊界位 置係根據讀取位址決定，但也可由調變振幅決定。現在將 說明經由偵測調變振幅而於光碟丨，移動讀取光束照射位置 至起點邊界位置或終點邊界位置之操作。注意調變振幅之 测定係依浮凸區前及後的溝槽區不存在記錄資訊決定。 20 1253631BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push-pull waveform measuring apparatus and method, the optical disc 5 having a line of conduct 'the line is written by a main area therein The signal, and an embossed area, are formed with pre-formed pits. BACKGROUND OF THE INVENTION 10 discs such as CD-R, CD-RW, DVD-R, DVD-RW and DVD-RAM are currently known as information signal writable optical recording media. In addition, information reading and writing devices for recording and reproducing information materials of such optical discs have also been manufactured. Figure 1 is a view showing the area of the DVD-RW as an example of such a disc. 15 As shown in Fig. 1, the DVD-RW has a data structure consisting of the inner circumference side to the outer circumference side of the optical disc, including a pcA (power calibration area), an RMA (record management area), and a _ collar area. , material area and - lead area. The PCA performs the test write zone when measuring the laser beam recording power, and the RMA is written into the relevant official information poor zone. The embossed area is formed in one part of the collar area. The embossed area has phase pits which are pre-formed on the optical disc to prevent related information such as copying from being recorded in the embossed area. Figure 2 is a view showing a portion of the recording surface of such a recordable optical disc. As shown in Fig. 2, there is a convex groove line 1〇3 which is formed with a beak pit (mark) Pt for retaining information, and the groove line 1G3 and the concave land holder 1253631 line 102 are spiraled. The shape or concentric shape is alternately formed on the optical disk substrate ιοί. In addition, a plurality of LPPs (land pre-pits) 1 〇 4 series are formed between adjacent groove lines 103. The LPPs 104 are pre-configured on the land track 102 to use the recording timing and address when recording information by the optical disk recorder. 5 The disc player with playback discs for LPPs is equipped with an LPP debt measurement circuit. The LPP detection circuit is composed of a binary circuit, in which the reflected beam from the optical disc is received by the fine pickup head, for example, the tangential direction of the ray line is divided into two, thereby obtaining the difference of the output signal from the photodetector. The signal, in other words, obtains the radial push-pull signal PP. The push-pull signal pp has the waveform shown in Fig. 3, and the LPP component is raised by the push-pull signal PP. Thus, by comparing the level of the push-pull signal PP with the threshold TH, a pre-pit detection signal PPD indicating the detected LPPs is generated. 15 As shown in Fig. 4, the level change of the push waveform is generated at each of the pickup read positions corresponding to Lpp, and is generated by the front pit detection signal PPd. The sync pulse PsYNC appears in each period of the pre-pit detection signal ρρ〇, as shown in Fig. 4. After the sync pulse PSYNG, there are two pre-data pulses at a given interval, but these data pulses are not regularly present in each cycle for performance (eg, address). As shown in Fig. 4, the pulse from the second position of the sync pulse compaction is the pre-set (four) pulse Pd of the financial address. When the information is to be recorded on the optical disc, the recording of the video signal is performed by detecting the disc address based on the front pit detection signal PPD. Lpps for optical discs manufactured by optical disc manufacturers including LPPS are required to meet the standards. The light Ln is in the light, and it is also related to the /f convex area of the afl area. The optical disc comprises an entire embossed area, a disc consisting of a reading portion without a 20 1253631 method (for example, a DVD-RW 10 version); and wherein the embossed area is made up of a readable portion and an unreadable portion from the inside of the optical disc A sequentially composed disc (for example, DVD_RW U version), as shown in Figure 5. According to this DVD-RW version 1.1, the 176 control data block is located inside the 5 embossed area constituting the readable portion (referred to as the control data section), and the 16 subsequent servo blocks constitute the unreadable portion. In addition, according to the DVD-RW version 1.1 disc, the readable portion is recorded in deep phase pits, which can be read to prevent copying of related assets. Thus, most of the discs are formed on the disc without any Lpp formed in such a readable portion. Adjacent to the line. The unreadable portion is formed by shallow phase pits, which prevents the machine from being overwritten and recorded on the area being read. 'The LPP is similarly shaped between the adjacent tracks in the data area. Formed between adjacent trajectories of such unreadable portions. The part of the LPPs cannot be read to determine the address of the data area. From the initial position, the data area is located closer to the outside of the disc than the unreadable part. 15 In order to determine whether the standard is met, the signal waveform of the push-pull signal PP for the following parts must be determined, which is related to the trench region (which is the main region with the groove track) as shown in Fig. 2, and includes The data area), the readable portion of the embossed area, and the unreadable portion of the embossed area. Effective measurements are required, so such measurements are required' to include the boundary portion between the embossed region and the groove interval and the boundary portion of the endpoint. SUMMARY OF THE INVENTION It is an object of the present invention to provide a push-pull waveform measuring apparatus and method in which, as a part of a disc for measuring a subject, a boundary portion of an area of the embossed 1253631 region and the main section can be effectively performed. Push-pull signal waveform measurement. The push-pull waveform measuring device of the present invention is a device for a disc having a track, the track includes a main area in which information signals are recorded, and an embossed area has pre-formed pits. a light detecting device is disposed, and is provided with a light receiving surface, and the light receiving surface is divided into a first light receiving surface and a second light receiving surface, which are divided into the tangential direction of the tracking line, for the first The light receiving surface and the second light receiving surface receive the reflected light of the light beam irradiated to the wire, and output a first light detecting signal according to the amount of light received by the first light receiving surface and the second light receiving surface, and a second optical detection 10 measurement signal; the subtraction device is configured to calculate a difference between the first optical detection signal and the second optical detection signal output by the optical detection device to generate a push-pull signal; a position for specifying a predetermined position of the main zone, a starting point boundary position of the embossed area, and an end boundary position of the embossed area; and a movement control device for moving the beam irradiation position to a position specified by the prescribed device 15; The playback device is configured to move the beam irradiation position by the movement control device, set the tracking servo system to be in a stopped state for playing the optical disk, and display control means for displaying the waveform of the push-pull signal on the display device. The push-pull waveform measuring method of the present invention is a method for a disc having a wire alignment. The trajectory includes a main area in which an information signal is recorded to 20 and an embossed area having pre-formed pits. The method includes: a light picking step for receiving the reflected light that is incident on the light receiving surface, the light receiving surface is divided into the receiving surface and the tangential direction of the track is divided into a first light receiving surface and a second light receiving And outputting the first light detecting signal and the second light detecting 1253631 measuring signal according to the amount of light received by each of the first light receiving surface and the second light receiving surface; and a subtracting step, the step is calculating light detecting Step outputting a difference between the first photodetection signal and the second photodetection signal, generating a push-pull signal; and a predetermined step of providing a predetermined position in the main region and a starting boundary position of the embossed region And a position in the boundary position of the embossed area; a movement control step for moving the beam to the position specified by the prescribed step; a playback step for supplying the beam After the irradiation position is moved by the movement control step, the tracking servo system is set to a stop state for playing the optical disc; and a display control step is for displaying the push-pull signal waveform on the display device. 10 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing calibration of each area of a DVD-RW; Fig. 2 is a view showing a composition of a DVD-RW recording surface; and Fig. 3 is a view showing a radial push-pull signal waveform including an LPP component; Figure 4 is a waveform diagram showing the front pit detection signal in the view; 15 Figure 5 is a view showing the readable portion and the unreadable portion of the embossed area; Figure 6 is a block diagram showing the present invention in accordance with the present invention. Waveform measuring device; Fig. 7 is a block diagram showing the structure of the head amplifier and the front pit detecting circuit of the device of Fig. 6; 20 Fig. 8 is a block diagram showing the schematic composition of the oscilloscope of the device of Fig. 6; The flow chart shows the waveform measurement operation by the personal computer; the 10A to 10C are diagrams illustrating the waveform example displayed on the oscilloscope through the waveform measurement operation result of Fig. 9; and the 11th is the flow chart showing the starting point of the embossed area. The movement of the boundary position is performed by 1253631; Fig. 12 is a flow chart showing the movement of the end point boundary position of the embossed area. Fig. 13 is a flow chart showing the starting point boundary position of the embossed area 5; The picture shows the process The figure shows the end point boundary position κ movement operation of the embossed area; FIG. 15 is a flow chart showing the movement of the starting point boundary position of the embossed area; and FIG. 16 is a flowchart showing the end point boundary position of the embossed area. Move the essay. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, details of specific embodiments of the present invention will be described with reference to the drawings. 15 Fig. 6 illustrates a waveform measuring apparatus in which the embossed area detecting apparatus according to the present invention is employed. The waveform measuring device is included in the head 2 and includes a recording beam generating device (not shown) for recording information data on a disc that is written once or rewritable, and the disc has a recording surface as the second The figure shows a read beam generating device (not shown) for reading information (including information material) of the record 20 from the optical disc; and a quadrant photodetector (symbol 20 of Fig. 7). The recording beam generating device and the reading beam generating device need not be separately provided, but may be provided as a single-beam generating device which generates a recording beam during recording and generates a reading beam during reading. The 10!25363l item is generated by the reading beam, and the light is driven by the spindle motor 9, thereby forming an information reading point on the recording surface. As shown in Fig. 7, the quadrant photodetector 20 is composed of a photoelectric conversion element having a light receiving surface 2〇a to an information recording track applied to the optical disk (the groove 5 groove track 1〇3). The tangential direction and the orthogonal direction of the recording tangential line are divided into four. The photoelectric conversion element receives the reflected light of each of the information reading points of the optical disc 1±four light receiving surfaces to 2〇d, and converts each reflected light into an electric signal 'output as the light receiving signals Ra to Rd. The servo control device 4 generates a focus error signal, a tracking error signal, and a slider drive signal based on the light receiving signal RasRd, respectively. The focus error signal is supplied to a focus actuator (not shown) mounted on the head 2. The focus actuator adjusts the focus of the information reading point based on the focus error signal. The tracking error signal is supplied to a tracking actuator (not shown) mounted on the head 2. The tracking actuator adjusts the information reading point formation position in the radial direction of the optical disk 15 based on the tracking error signal. The slider drive signal is supplied to the slider 1〇. The slider ίο moves the head in the radial direction of the disc at the corresponding slider drive signal speed. The light receiving signals Ra to Rd are also supplied to the head amplifier 25, and the head amplifier 25 has adders 21 to 23 and a subtractor 24. The adder 21 adds the light receiving signals Ra, 20 Rd, and the adder 22 adds the light receiving signals Rb, Rc. In particular, the adder 21 adds the light receiving signals Ra and Rd of the light receiving surface 20a and 20d of the image-limited photodetector 20, and outputs the accumulated light receiving signal sharp Ra+d. The adder 22 adds the light receiving signals Rb and RC obtained by receiving the light from the light receiving faces 2〇b and 2〇c of the quadrant photodetector 20, and outputs the accumulated light punch 1253631 to receive the signal Rb+c. The adder 23 adds the rounding signals Ra+d and Rb+c from the adders 21 and 22. The output signal from the adder 23 is a read signal, or a measure, and is supplied to the information reproducing circuit 30 and the address detecting circuit 5A. The information data re-generating circuit 30 binarizes the read signal, and then continuously performs demodulation processing, error correction processing, and various types of information decryption processing, thereby reproducing and outputting information materials (image data, audio data, and recorded information recorded on the optical disc 1 Computer information). The LPF 27 is coupled to the output of the adder 23. The LPF 27 extracts a low frequency component (e.g., 3 kHz or less) of the output RF signal by the adder 23, and outputs 1 〇 this component as an RF DC component signal. The subtracter 24 subtracts the output signal Rb+c of the adder 22 from the output signal Ra+d from the adder 21. The output signal of the subtracter 24 becomes a signal indicating the frequency due to the sway of the aforementioned groove track 103, and is supplied to the spindle servo 26 of the spindle motor 9. The spindle servo 26 rotationally drives the spindle horse 15 up to 9, allowing the output signal frequency from the subtractor 24 to be set to correspond to the predetermined speed. The composition of the spindle servo motor 26 is disclosed in Japanese Patent Application Laid-Open No. H10-283638, the entire disclosure of which is hereby incorporated by reference. As shown in FIG. 2, the front pit detection circuit 5 detects a land pre-pit (LPP) 104, and the LPP 1〇4 is formed on the optical disc based on the respective output signals 20 from the adders 21 and 22. A land track (pre-pit line) 102 is provided; and then a pre-pit detection signal PPd is supplied to the recording processing circuit 7 and the address detecting circuit 51. The recording processing circuit 7 confirms that the head 2 is currently in the recording position based on the pre-pit detection signal PPd, or the groove is in the position of 1〇3, and supplies a control signal to the servo 12 1253631 control device 4 for The head 2 is caused to perform a jump jump from the recording position to the predetermined position. The recording processing secretary 7 also performs predetermined recording and modulation processing on the information to be recorded, thereby generating a recording modulation data signal, which is supplied to the head 2. The recording beam generating device which is switched to read and write generates a recording beam based on the recording modulation data signal, and the recording beam is irradiated onto the groove track 1〇3 of the optical disk i. Thus, the heat transfer to the groove line 103 irradiated by the recording beam is such that the area is depressed to form information pits (marks). The composition of the recording processing circuit 7 is also disclosed in Japanese Patent Application Laid-Open No. H10-283638, the entire disclosure of which is hereby incorporated herein. As shown in Fig. 7, the pre-pit detection circuit 5 is composed of the following constituent elements: an amplifier 31 for amplifying the output signal Ra+d from the adder 21, and an amplifier 32 for outputting signals from the adder 22. Rb+C, a subtractor 33 for subtracting the output signal of the amplifier 32 from the output signal of the amplification 31, and then outputting its value, and a binarization circuit 34 for the threshold TH binarization subtractor 33 The signal is output, thereby generating the aforementioned pre-pit detection signal PPD. The gain G1 of the amplifier 31 and the gain G2 of the amplifier 32 are set to G1 = G2. At the head 2, the signal output from the subtracter 33 is supplied to the aforementioned binary circuit 34 of the LPF 35. The LPF 35 extracts the low frequency component of the push-pull signal PP to generate the push-pull signal PP. RF signal, RF DC component signal, and push-pull signal PP are supplied to the oscilloscope. 61 示波器 The oscilloscope 61 inputs the RF signal, the RF DC component signal, and the push-pull signal 13 I25363l 唬pp, respectively, and samples and displays the waveform. A personal computer (hereinafter referred to as a PC) 62 is connected to the oscilloscope 61. The specific composition of the personal computer 62 is not illustrated, but includes at least one CPU and internal memory. The connection between the personal computer 62 and the oscilloscope 61 is based, for example, on interface standards 5 such as GHB, 10BASE-T, or RS-232C. The oscilloscope 61 can be composed, for example, as shown in Fig. 8. In other words, the oscilloscope 61 includes an A/D converter 91, a control circuit 92, a sample memory 93, a display memory 94, X and Y drivers 95, 96, a display panel 97, an operation unit 98, and an interface 99. . The A/D converter 91 converts the three input analog signals into digital signals. The control circuit % continuously writes the sample data of the digital signal obtained by the A/D converter 91 into the sample memory 93, and reads the data to be displayed by the sample memory 93, writes the data to the display memory 94, and then arranges Such information. The display § memory 94 includes storage locations for the respective pixels of the display panel 97. The X and Y drivers 95 and 96 drive the display panel 97 based on the information written in the display memory 94, so that the input analog signal waveform is displayed on the display panel 97. The interface 99 is for example connected to the personal computer 62 based on an interface standard such as GpiB, 1〇BASE_T, or RS-232C, and the information written in the sampled δ recall 93 is written to the personal computer 92 via the control circuit 92. Interface 99 also relays instructions from personal computer 62 to control circuit 92. 〇 As shown in Fig. 9, the waveform measuring device of such a composition is illustrated, and the personal computer 62 starts the reproducing operation on the optical disk (step S1). In this regenerative operation, the servo system, for example, the spindle servo, the tracking servo, and the focus servo are all turned off, so that the borrowing head 2 is read by the optical disc. Then, the reading beam from the head 2 is moved to the irradiation position (reading position) which is the position of the radius 25 mm 14 1253631 on the optical disk (step S2). In other words, in the groove region of the optical disc 1, the reading beam is shifted to the irradiation position by the jump of the trajectory. When the reading beam has moved to the irradiation position, the individual tracking servo system is turned on (the tracking servo control is suspended), and the reading by the head 2 is continued by the optical disk 1 (step S3). By turning on the tracking servo 5 system, the trace along the groove line disappears, and thus the irradiation position of the read beam irradiated to the optical disk 1 fluctuates in the radial direction according to the eccentric amount of the optical disk 1. Then, the push-pull h number!^, RF# number, and rf DC component signal waveforms are displayed on the oscilloscope 61 (step S4). The amplitude ppb of the push-pull signal pp (the DC-level ppb (DC) ratio of the AC^RF DC component signal is calculated as ppb (step 10 S5). For example, the personal computer 62 is read by the oscilloscope. The amplitude ppb (AC) of the push-pull signal PP and the DC level ppb (DC) of the RF DC component signal are obtained, and ppb=ppb(AC)/ppb(DC) is obtained. The personal computer 62 is set as a cursor (reference line) The system is located at the center of the push-pull signal PP amplitude of the display screen of the oscilloscope 61 (step S6). This step can be performed according to the instruction of the personal computer 62 or can be manually performed. In other words, as illustrated in FIG. 10A, the cursor moves to push The center of the pull signal PP amplitude is set at the 〇 level (for example). When the personal computer 62 completes the measurement in the groove area, it is determined whether the waveform measurement is the starting point boundary position or the end point boundary position of the embossed area of the optical disc 1. The measured value (step S7). The user can perform the determination by using the input operation. If the measurement is determined to be the waveform measurement value of the boundary position of the starting point of the embossed area of the optical disc 1, the irradiation position of the reading beam from the reading head 2 is moved. To the starting point boundary position of the embossed area of the optical disc 1 (step S8). After moving to the starting point boundary position of the embossed area, the individual tracking servo system 15 1253631 is turned on and continues to be read by the optical disk 1 by the head 2 (step S9), at this time, the push-pull signal PP The RF signal & RF DC component signal waveforms are each displayed on the oscilloscope 61 (step S10). Steps S9 and S10 are similar to the aforementioned steps S3 and S4. For example, as shown in FIG. 10B, the push-pull signals PP, RF signals, and RF are as shown in FIG. 10B. The DC component signal 5 waveform is simultaneously displayed on the display screen of the oscilloscope 61 on the same time reference. It can be seen from the display of the item that the illumination position of the read beam on the optical disc 1 fluctuates in the radial direction of the optical disc according to the eccentricity of the optical disc! The groove region and the embossed region may be purchased to obtain a boundary between the portions. The personal computer 6 2 measures the positive amplitude (zero or more amplitude bits) of the push-pull signal PP between the readable portion and the groove interval boundary portion 10. PPi and negative amplitude (amplitude level of zero or less) ppj (step S11). The positive amplitude PPi and the negative amplitude PPj can determine the value of all the waveforms of the boundary portion, or the minimum value can be measured. Positive amplitude P The ratio of Pi and negative amplitude PPj to the DC level of the RF DC component signal of each zone is calculated as follows: 15 | PPi I = PPi / ppb (DC) I PPj I = PPj / ppb (DC) I PPi thus calculated I and I PPj I are normalized by the ppb at the aforementioned 25 mm radius position (step S12). In other words, I PPi 丨 / ppb and I PPj I / ppb are obtained. According to the DVD-RW standard, I PPi I / ppb > 0.2 is required. And I PPj I 20 /ppb>0 o If in step S7, the personal computer 62 determines that the waveform is measured as the waveform of the end boundary of the embossed area of the optical disc 1, the irradiation position of the reading beam from the head 2 is moved to the disc 1 The end boundary position of the land (step S13). The movement of step S13 is as follows. After moving to the end boundary position of the embossed area, the tracking system 16 1253631 is opened separately and the head 2 is continuously read by the optical disc 1 (step S14), at this time, the push-pull signal PP, RF signal and rF DC component signal are transmitted. The waveforms are each displayed on the oscilloscope 61 (step S15). Steps S14 and S15 are similar to the aforementioned steps S3 & S4. For example, as shown in Fig. 10C, the push-pull signal pp, rf signal and RF DC component 5 signal waveform are simultaneously displayed on the display screen of the oscilloscope 61 at the same time reference. The illumination position of the read beam on the optical disc 1 fluctuates in the radial position of the optical disc according to the eccentricity of the optical disc, including the boundary between the readable portion and the unreadable portion of the embossed area, and the boundary between the unreadable portion and the groove portion. . The unreadable portion is narrow in the radial direction of the disc, so that when the trace along the groove track disappears due to the opening of the tracking servo system, the readable portion, the unreadable portion, and the groove region are read. The personal computer 62 measures the positive amplitude PPi and the negative amplitude PPj of the push-pull signal PP at the boundary portion between the readable portion and the unreadable portion, and measures the boundary portion between the unreadable portion and the groove portion, and pushes the signal The pp is positively oscillated with 15 PPi and negative amplitude PPj (step S16). Step S16 is similar to step S11. Then, the positive amplitude PPi and the negative amplitude PPj measured at the respective boundaries are respectively normalized by ppb (step S12). The operation of the step S8 will now be explained, and the reading beam irradiation position is moved to the start boundary position of the embossed area of the optical disk 1. The personal computer 62 starts the reproducing operation on the optical disc 1 shown in Fig. 11 (step S21). The operation of the step S21 is carried out in a manner similar to the step si, and the reproduction position starts at a position further inside the embossed area of the optical disc 1. The personal computer 62 reads the address detected by the integrated circuit 50 (step S22). The address detecting circuit 50 and the address debt detecting circuit 51 are all circuits for detecting 17 1253631 : 22 based on the output signal from the head amplifier 25. The address detecting circuit 50 picks up the beam irradiation position address according to the _ 5 10 15 = measurement, and the address detecting circuit 51 detects the read beam irradiation position address based on the pre-pit defect signal PPd. The personal computer illuminating location address Μ is the predetermined starting address of the readable portion (step (2)). (4) If the address of the beam irradiation position is not the starting point address of the readable portion, the address of the reading position of the reading beam is read again. If the reading beam irradiation position address is the starting point of the readable portion, the reading light beam irradiation position has moved to the starting point boundary position of the embossed area of the optical disk i. The operation of the step S13 will now be explained, and the reading beam irradiation position is moved to the end boundary position of the embossed area of the optical disc 1. The personal computer 62 starts the reproducing operation on the optical disc i as shown in Fig. 12 (step S31). The operation of step S31 is performed in a similar step si, and the reproduction position is started on the optical disc 1 at a position further inside than the groove area behind the embossed area. The personal computer phantom reads the address of the address (4) side of the circuit 51 (step S32). The personal computer 62 then determines whether the illumination location address is a predetermined address inside the unreadable portion (step S33). If the reading beam irradiation position address is not the unreadable portion of the internal port P address, the 5 selling beam irradiation position address is read again. If the reading beam irradiation position address is an unreadable partial internal address, it is determined that the reading beam makeup position has moved to the end boundary position of the disc 1 embossed area. In Figures 11 and 12, the starting point boundary position and the ending point boundary position of the embossed area are determined according to the read address, but may also be determined by the modulation amplitude. The operation of moving the reading beam irradiation position to the start boundary position or the end boundary position by detecting the amplitude of the modulation on the optical disk will now be described. Note that the measurement of the modulation amplitude is determined by the absence of recorded information in the groove area before and after the embossed area. 20 1253631
當移動至浮凸區起點邊界位置時，個人電腦62首先開 始就光碟1進行再生操作，如第13圖所示（步驟S41)。步驟 S41係以步驟S21之方式執行。個人電腦62測定尺以言號振幅 AC、及RF直流分量信號電壓1)(：：(步驟S42)。^^信號振幅 5 AC、及RF直流分量信號電壓^^(步驟S42)可讀取自供給示 波器61之RF信號、或讀取自RF信號及RF直流分量信號；或 RF直流分量之平均振幅AC之電壓DC可測定為其測量值。 若測定RF信號振幅AC及RF直流分量信號電壓dc，則其測 量值用以根據AC/DC計算經調變之振幅Mod(步驟S43)。然 1〇後判定調變振幅Mod是否為60%或以上（步驟S44)。若 Mod<60°/〇，[判定讀取光束照射位置係位於]之無資訊記錄 的溝槽區，如此返回再生操作（步驟S45)且重覆步驟S42。 若於步驟S44，Mod-60%，則資訊經記錄，如此指示浮凸 區之可讀取部分，因此決定讀取光束照射位置已經移動至 15 光碟1之浮凸區之起點邊界位置。When moving to the position of the start point boundary of the embossed area, the personal computer 62 first starts the reproducing operation on the optical disk 1, as shown in Fig. 13 (step S41). Step S41 is performed in the manner of step S21. The personal computer 62 measures the amplitude of the amplitude AC, and the RF DC component signal voltage 1) (:: (step S42). The signal amplitude 5 AC, and the RF DC component signal voltage ^ (step S42) can be read from The RF signal supplied to the oscilloscope 61, or read from the RF signal and the RF DC component signal; or the voltage DC of the average amplitude AC of the RF DC component can be measured as its measured value. If the RF signal amplitude AC and RF DC component signal voltage dc are measured Then, the measured value is used to calculate the modulated amplitude Mod according to AC/DC (step S43). Then, it is determined whether the modulation amplitude Mod is 60% or more (step S44). If Mod < 60°/〇 , [determining that the reading beam irradiation position is located in the grooved area of the information-free recording, thus returning to the reproducing operation (step S45) and repeating step S42. If in step S44, Mod-60%, the information is recorded, The readable portion of the embossed area is indicated, and thus it is determined that the reading beam irradiation position has moved to the start boundary position of the embossed area of the 15th disc 1.
當移動至浮凸區終點邊界位置時，個人電腦62開始就 光碟1進行再生操作，如第14圖所示（步驟S51)。步驟S51係 以類似步驟S31之方式執行。個人電腦“測量^^信號振幅 AC、及RF直流分量信號之電壓DC(步驟S52)，且使用其測 20量值根據AC/DC求出調變振幅Mod(步驟S53)。步驟S52及 S53係以類似步驟S42及S43之方式實施。然後判定計算得之 調變振幅Mod是否於9%至60%之範圍（步驟S54)。若M〇d非 於9%至60%之範圍，表示浮凸區或溝槽區之未記錄任何資 汛之可讀取區係位在光碟之進一步内側，因而返回再生操 19 1253631 作（步驟S55) ’以及重複步驟S52。於步驟㈣，若麻係於 9%至60%之範圍，則記錄資訊，指示浮凸區之不可讀取部 分’因而測定讀取光束照射位置已經移動至光碟丨浮凸區之 起點邊界位置。 5 注意調變振幅侧電路（圖中未顯示）可提供於RF信號 線供測定調變振幅Mod。 現在將說明藉《RF直流分量信號位準，移動讀取光 束照射位置至光碟味凸區之起點邊界位置或終點邊界位 置之操作。RF直流分量信號位準之測定係依據浮凸區前及 10後之溝槽區不存在有記錄資訊決定。 當進行移動至浮凸區之起點邊界位置時，個人電腦62 開始就光碟m行再生操作，如第15圖所示（步驟S61)。步驟 S61係類似步驟S21執行。個人電腦62測定rf直流分量信號 電壓DC(步驟S62),直流分量信號電壓dc係讀取自供^ 丁波器61之RF直流分篁仏號。於—段預定時間，直流分 量信號之平均電壓DC決定為此測量值。當測得肝直流分量 信號電壓DC時判定該電壓Dc是否由高位準改成低位準（步 驟S63)。當讀取光束照射位置由溝槽區進入浮凸區之可讀 取部時，RF直流分量信號由高位準改成低位準。若於高^ 20準，則讀取光束照射位置係於溝槽區，因而返回再生操作 (步職4)，重複步驟S62。若於步驟S63，RF直流分量信號 測得為已經由高位準改成低位準，則指示浮凸區之可讀取 部’如此判定讀取光束照射位置已經移動至光碟！浮凸區之 起點邊界位置。 20 1253631 當移動至浮凸區之終點邊界位置時，個人電腦62開始 就光碟1進行再生操作，如第16圖所示（步驟S71)。步驟S7l 係以類似步驟S31之方式執行。個人電腦62_sRF直流分量 信號之電壓DC(步驟S72)，以及判定測得2RF直流分量信 5號電壓DC是否已經由低位準改成高位準（步驟S73)。當讀取 光束照射位置由浮凸區之可讀取部進入不可讀取部時，rf 直流分ϊ信號由低位準改成高位準。*rf直流分量信號之 電壓DC係於低位準，則讀取光束照射位置位於浮凸區之可 讀取部，因此返回再生操作（步驟S74)，且重複步驟S72。 10若於步驟873,判SRF直流分量信號已經由低位準改變成高 位準，則指示浮凸區或隨後溝槽區之不可讀取部分，如此 判疋靖取光束照射位置已經移動至光碟1浮凸區之終點邊 界位置。 庄意當第10B及10C圖所示，包括浮凸區及溝槽區二者 15之波形圖無法因光碟1的小量偏心獲得時，可藉由供給正弦 波信號給追蹤伺服系統進行步驟sl〇及S15之波形顯示，其 中讀取光束照射被強制含括浮凸區及溝槽區。 八如前文說明，根據本發明，可有效進行各測量主題部 2〇刀^括光碟浮凸區與主區間之邊界部分之推挽信號波形之 測量，且可縮短測量時間。 C圖式簡單説明】 第1圖為視圖顯示DVD-RW各區之校準； 第2圖為視圖顯示DVD-RW記錄面之組成； 弟3圖為視圖顯示包含LPP分量之徑向推挽信號波形； 1253631 第4圖為視圖顯示前置凹坑偵測信號之波形圖； 第5圖為視圖顯示浮凸區之可讀取部分及不可_ 」頊取部 分； 第6圖為方塊圖，顯示根據本發明之波形測量褒置； 5 第7圖為方塊圖顯示於第6圖裝置之頭放大器及前置凹 坑偵測電路之結構； 第8圖為方塊圖顯示第6圖裝置之示波器之示意組成； 第9圖為流程圖顯示藉個人電腦進行波形測量操作； 第10A至10C圖為視圖圖解說明經由第9圖之波形測量 10 操作結果顯示於示波器之波形範例； 第11圖為流程圖顯示浮凸區之起點邊界位置之移動操 作； 第12圖為流程圖顯示浮凸區之終點邊界位置之移動操 作； 15 第13圖為流程圖顯示浮凸區之起點邊界位置之移動操 作； 第14圖為流程圖顯示浮凸區之終點邊界位置之移動操 作； 第15圖為流程圖顯示浮凸區之起點邊界位置之移動操 20 作；以及 第16圖為流程圖顯示浮凸區之終點邊界位置之移動操 作0 22 1253631 【圖式之主要元件代表符號表】When moving to the position of the end point boundary of the embossed area, the personal computer 62 starts the reproducing operation on the optical disk 1, as shown in Fig. 14 (step S51). Step S51 is performed in a manner similar to step S31. The personal computer "measures the signal amplitude AC and the voltage DC of the RF DC component signal (step S52), and uses the measured 20 magnitude to determine the modulation amplitude Mod from the AC/DC (step S53). Steps S52 and S53 are used. It is implemented in a manner similar to steps S42 and S43. Then, it is determined whether the calculated modulation amplitude Mod is in the range of 9% to 60% (step S54). If M〇d is not in the range of 9% to 60%, it means embossing. The readable portion of the area or the trench area where no information is recorded is located further inside the optical disc, thus returning to the regenerative operation 19 1253631 (step S55)' and repeating step S52. In step (4), if the system is tied to 9 In the range of % to 60%, information is recorded indicating the unreadable portion of the embossed area. Thus, it is determined that the reading position of the reading beam has moved to the starting point boundary position of the embossing area of the optical disk. 5 Note the amplitude-modulated side circuit (Fig. It can be provided on the RF signal line for measuring the modulation amplitude Mod. The operation of moving the reading beam irradiation position to the starting boundary position or the end boundary position of the optical disk slanting region by the RF DC component signal level will now be described. RF DC component signal level The measurement is determined according to the absence of recorded information in the groove area before and after the embossed area. When moving to the starting point boundary position of the embossed area, the personal computer 62 starts the reproduction operation of the optical disk m line, as shown in Fig. 15. This is shown in step S61. Step S61 is performed in a similar manner to step S21. The personal computer 62 measures the rf DC component signal voltage DC (step S62), and the DC component signal voltage dc is read from the RF DC branch of the voltage supply 61. The predetermined voltage of the DC component signal is determined as the measured value. When the liver DC component signal voltage DC is measured, it is determined whether the voltage Dc is changed from the high level to the low level (step S63). When the beam irradiation position is changed from the groove region to the readable portion of the embossed region, the RF direct current component signal is changed from a high level to a low level. If the height is higher than 20, the reading beam irradiation position is in the groove region. Therefore, the reproduction operation is returned (step 4), and step S62 is repeated. If the RF direct current component signal is measured to have changed from the high level to the low level in step S63, the readable portion of the embossed area is instructed to read. Beam illumination position has been Move to the disc! The starting point boundary position of the embossed area. 20 1253631 When moving to the end boundary position of the embossed area, the personal computer 62 starts the reproducing operation on the optical disc 1, as shown in Fig. 16 (step S71). Step S7l The method is similar to the step S31. The PC 62_sRF DC component signal voltage DC (step S72), and determines whether the 2RF DC component signal No. 5 voltage DC has been changed from a low level to a high level (step S73). When the reading position of the reading beam enters the unreadable portion from the readable portion of the embossed portion, the rf DC bifurcation signal is changed from the low level to the high level. * The voltage DC of the rf DC component signal is at a low level, and the reading beam irradiation position is located at the readable portion of the embossed area, so that the reproduction operation is returned (step S74), and step S72 is repeated. 10 If, in step 873, the SRF DC component signal has been changed from a low level to a high level, indicating an unreadable portion of the embossed region or the subsequent groove region, so that the beam irradiation position has been moved to the disc 1 float The end point boundary position of the land. Zhuang Yi, as shown in Figures 10B and 10C, when the waveform diagram of both the embossed area and the grooved area 15 cannot be obtained by the small amount of eccentricity of the optical disc 1, the step S1 can be performed by supplying a sine wave signal to the tracking servo system. The waveforms of 〇 and S15 are shown, wherein the reading beam illumination is forced to include the embossed area and the grooved area. As described above, according to the present invention, the measurement of the push-pull signal waveform of the boundary portion of the optical disk embossed area and the main section of each measurement subject portion 2 can be effectively performed, and the measurement time can be shortened. A brief description of the C pattern] Fig. 1 is a view showing the calibration of each area of the DVD-RW; Fig. 2 is a view showing the composition of the DVD-RW recording surface; and Fig. 3 is a view showing the radial push-pull signal waveform including the LPP component. 1253631 Fig. 4 is a waveform diagram showing the front pit detection signal in the view; Fig. 5 is a view showing the readable portion of the embossed area and the non-"" capturing portion; Fig. 6 is a block diagram showing The waveform measuring device of the present invention; 5 FIG. 7 is a block diagram showing the structure of the head amplifier and the front pit detecting circuit of the device of FIG. 6; FIG. 8 is a block diagram showing the schematic of the oscilloscope of the device of FIG. Figure 9 is a flow chart showing a waveform measurement operation by a personal computer; FIGS. 10A to 10C are diagrams illustrating an example of a waveform displayed on the oscilloscope through the waveform measurement 10 of FIG. 9; FIG. 11 is a flowchart display The movement operation of the boundary position of the starting point of the embossed area; FIG. 12 is a flow chart showing the movement operation of the boundary position of the embossed area; 15 FIG. 13 is a flow chart showing the movement operation of the starting point boundary position of the embossed area; Figure The flow chart shows the movement operation of the end boundary position of the embossed area; FIG. 15 is a flow chart showing the movement of the starting point boundary position of the embossed area; and FIG. 16 is a flow chart showing the position of the end point of the embossed area. Move operation 0 22 1253631 [The main component representative symbol table of the figure]
1.. .光碟 2.. .讀寫頭 4.. .伺服控制裝置 5.. .前置凹坑偵測電路 7.. .記錄處理電路 9.. .主軸馬達 10…滑件 20.. .象限光偵測器 20a-d···光接收面 21-23...加法器 24.. .減法器 25.. .頭放大器 26.. .主軸伺服裝置 27.. .LPF 30.. .資訊資料再生電路 31，32...放大器 33.. .減法器 34.. .二進制化電路 35.. .LPF 50，51...位址偵測電路 61.. .示波器 62.. .個人電腦 91.. . A/D轉換器 92…控制電路 93.. .抽樣記憶體 94…顯示記憶體 95.. .X驅動器 96.. .Y驅動器 97…顯示面板 98…操作單元 99.. .介面 101.. .光碟基板 102.. .陸地軌線 103.. .溝槽軌線 104.. .陸地前置凹坑 S1-S16，S21-S23，S31-S33， S41-S45，S51-S55，S61-S64， S71-S74···步驟 231...Disc 2...Reading head 4...Servo control device 5.. Front recess detection circuit 7.. Record processing circuit 9. Spindle motor 10...Slider 20.. . Quadrant photodetector 20a-d···light receiving surface 21-23...adder 24..subtractor 25.. head amplifier 26.. spindle servo 27.. .LPF 30.. Information data reproduction circuit 31, 32...Amplifier 33.. Subtractor 34.. . Binarization circuit 35.. .LPF 50, 51... Address detection circuit 61.. oscilloscope 62.. Personal computer 91.. A/D converter 92...Control circuit 93..Sampling memory 94...display memory 95..X driver 96..Y driver 97...display panel 98...operation unit 99.. Interface 101.. CD substrate 102.. Land track 103.. Groove track 104.. Land front pits S1-S16, S21-S23, S31-S33, S41-S45, S51- S55, S61-S64, S71-S74···Step 23