200305149 玖、發明說明： 【發^明所^屬之^拍:掏^貝域^】 發明領域 本發明係有關一種供光碟用之浮凸區偵測裝置及方 5法’該光碟具有一軌線，該軌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。 L先前 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，DVD-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— PCA(功率校準區）、一 RMA(記錄管理區）、一領入區、一資料區以及一領出區。 PCA為測定雷射束記錄功率時進行測試寫入區，為寫 入圯錄相關管理資訊區域。浮凸區係成形於領入區之一部 20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。 如第2圖所示’有凸面溝槽執線1G3其中成形保有資訊 貧料用之資訊凹坑(記號)pt，該溝槽軌、_3與凹面陸地軌 200305149 線102係以螺旋狀或同心形狀交替成形於光碟基板1〇1上。 此外複數個LPPs(陸地前置凹坑）1〇4係成形於田比鄰溝槽執 線103間。LPPs 104預先設置於陸地軌線1〇2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之喊光碟用之光制放H設置有LPP偵測 電路。LPP债測電路係由二進制電路組成，其令來自光碟之 反射束係藉拾取頭接收，例如藉光制器於執線之切線方 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Lm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τ係存在於前置凹坑偵測信號ppD，如 第4圖所不。於同步脈衝Psync之後，以預定間隔存在有二 前置資料脈衝’但此等資料脈衝並非經常性存在於各個週 ㈣表現（例如位址）。如第4圖所示，來自同步脈衝？霞 之第三位置之脈衝騎有扇區位址之前置資料脈衝&當 欲記錄資訊於光碟時，f訊的記錄係經由基於前置凹坑偵 測信號PPD.測光碟位址進行。 要求包括LPPs之光碟製造商製造之光碟之咖須滿足 標準。光碟標準之應用非僅限於光碟資料區，同時也係有 關資訊區之浮凸區。此種錢包括整個浮凸ϋ係由一個無 20 200305149 法項取部分組成之光碟（例如DVD-RW 1〇版）；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侧循序組 成之光碟（例如DVD-RW 1.1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。此外根據〇VD_RW 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 資訊，如此於大部分光碟上皆無任何L p p形成於此種可讀取 部分之毗鄰軌線間。無法讀取部分係由淺相位凹坑形成， 10俾便防止賓5凡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毗鄰軌線間iLpp，係成 形於此種無法讀取部分之就鄰軌線間。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’如第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。因此需進行此種 測量’包括介於浮凸區與溝槽區間之起點邊界部分以及終 20點邊界部分。此外重要地須於測量中準確偵測浮凸區。 為了偵測浮凸區，一般認為預先成形於光碟上之Lpps 經偵測，浮凸區係基於偵測得的LPPs根據位址資訊判定。 但於用於測量波形之光碟，有多種光碟，例如一種其 上未形成LPP之光碟，一種即使有LPP偵測於其上但無有效 200305149 信號品質來準確偵測LPP之光碟，以及一種未指定位址之光 碟。因此有無法基於偵測得的LPPs，根據位址資訊，準確 判定浮凸區的問題。 【發明内容】 5 發明概要 如此本發明之一目的係提供一種可準確偵測光碟上浮 凸區之浮凸區偵測裝置之方法。 根據本發明之浮凸區偵測裝置為一種供具有一軌線之 光碟用之裝置，該軌線包括其中記錄資訊信號之一主區、 10 以及具有預成形凹坑之浮凸區，該裝置包含：光束照射裝 置，其係供以光束照射執線；讀取信號產生裝置，其係供 接收照射於轨線上之光束反射光俾產生一讀取信號；分量 偵測裝置，其係供偵測該讀取信號之一調變振幅或一直流 分量；以及判定裝置，其係供基於分量偵測裝置偵測得之 15 讀取信號之調變振幅或直流分量之變化，而判定光碟浮凸 區。 根據本發明之浮凸區偵測方法為一種供具有軌線之光 碟用之方法，該軌線包括一其中記錄資訊信號之主區、以 及一具有預成形凹坑之浮凸區，該方法包含下列步驟：以光 20 束照射執線；接收照射於軌線之光束之反射光俾產生讀取 信號；偵測讀取信號之經調變振幅或直流分量；以及基於 讀取信號之調變振幅或直流分量變化，而判定光碟浮凸區 之邊界位置。 圖式簡單說明 200305149 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； 5 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圖為方塊圖顯示一種波形測量裝置，其中採用根據 本發明之浮凸區偵測裝置； 第7圖為方塊圖顯示於第6圖裝置之頭放大器及前置凹 10 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 操作結果顯示於示波器之波形範例； 15 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； 第13圖為流程圖顯示浮凸區之起點邊界位置之移動操 20 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 作；以及 9 200305149 第關為流程圖顯示浮凸區之終點邊 K移動操 C實施冷式3 較佳實施例之詳細說明 5 10 後文將參照附圖說明本發明之具體實施例之細f。 /第6圖圖解說明波形測量裝置，其中採用根據本:明之 二凸區制裝置。此種波形測餘置包含於讀寫頭2包含一 謂束產生裝置（圖巾未顯示），其係供記錄資訊資料於 一，可改寫之光碟1上，光碟1具有記錄面如第2圖所 :取束產生裝置（圖巾未顯示），其係供由光碟丨讀取記錄 的貝Λ(包括貧訊資料）；以及一象限光债測器(第7圖符號如）。 。己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I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。 15 讀取束產生裝置以讀取束照射光碟i，光碟⑽藉主轴 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tl件具有光接收面2〇a至2〇d於光碟丨之資訊記錄軌線（溝 槽軌線103)之切線方向以及於記錄軌線切線之正交方向一 分為四。此種光電轉換元件接受光碟丨上四個光接收面2〇a 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1^至11〇1而產生一 焦點錯誤信號、一追蹤錯誤信號以及一滑件驅動信號。焦 20 200305149 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 未顯不）。追蹤致動器係基於追蹤錯誤信號，而調整於光碟 5徑向方向之資訊讀取點形成位置。滑件驅動信號供給滑件 10。滑件10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、 10 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2〇a及20d接收光所 得之光接收信號Ra及Rd相加，而輸出累加光接收信號 Ra+d。加法器22係將藉象限光偵測器20之光接收面20b及 20c接收光所得之光接收信號Rb及Rc相加，而輸出累加光接 15 收信號Rb+c。 加法器23將得自加法器21、22之輸出信號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Rp信號， 供給資訊資料再生電路30及位址偵測電路50。資訊資料再 生電路30將讀取信號二進制化，然後連續實施解調處理、 20 錯誤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30 kHz或以下），且將 此分量輸出作為RF直流分量信號。 11 200305149 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“ 5虎Rb+c。減法裔24之輸出信號變成一種信號， 該信號指示因前述溝槽執線103晃動所致頻率，且供給主車由 馬達9之主軸伺服裝置26。主軸伺服裝置26旋轉驅動主轴馬 5 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。主軸词服馬達26之組成已經揭示於日本專利申古青 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 104係基於得自加法器21 ' 22之各別輸出作 10號成形於光碟1之陸地執線（前置凹坑軌線）1〇2上；以及然後 對記錄處理電路7及位址偵測電路51供給前置凹坑價測信 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，或溝槽軌線1〇3位置，且對伺 15服控制裝置4供給控制#號，用以讓讀寫頭2進行由此記錄 位置跳至預定記錄位置的軌線跳階。記錄處理電路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。安裝於讀寫頭2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 20束，該記錄光束照射於光碟1之溝槽軌線103上。如此傳熱 至被記錄光束照射之溝槽轨線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 第H10-283638號，於此處刪除其進一步說明。 12 200305149 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 由放大器31之輸出信號扣除放大器32之輸出信號，以及然 5後輸出其值，以及一二進制化電路34，其係供於臨限值TH 一進制化減法裔3 3輸出# 5虎’因而產生前述前置凹坑侦測 信號PPD。放大器31之增益G1以及放大器32之增益G2設定 為 G1 =G2 〇 於讀寫頭2，減法器33輸出之信號供給LPF 35之前述二 10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 15 20200305149 发明 Description of the invention: [Delivery of the ^ Ming ^ belongs to: ^ ^ shell domain ^ Field of the invention The present invention relates to a embossed area detection device and method for optical discs' The optical disc has a track The trajectory is composed of a main area in which information signals are written, and an embossed area with pre-shaped pits. L Prior Background of the Invention 10 optical 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. Fig. 1 is a view showing the area composition of a DVD-RW as an example of such a disc. 15 As shown in Figure 1, the DVD-RW has a data structure from the inner peripheral side to the outer peripheral side of the disc, including PCA (power calibration area), RMA (record management area), and lead-in area , A data area, and a lead-out area. PCA is a test write area when measuring the laser beam recording power, and is a write-in management information area. The embossed area is formed in a part of the collar area for 20 minutes. The embossed area has phase pits, which are pre-shaped on the optical disc, and information related to copy prevention can be recorded in the embossed area. Figure 2 is a view showing a part of the recording surface of such a recordable disc. As shown in Figure 2, 'the convex groove 1G3 is formed with information pits (symbols) pt used to retain information. The groove track, _3 and concave land track 200305149 line 102 is spiral or concentric. Alternately formed on the optical disc substrate 101. In addition, a number of LPPs (land front pits) 104 were formed between the Tianbi adjacent trench line 103. The LPPs 104 are set on the land track 102 in advance. When recording information by using a disc recorder, the recording timing and address are used. 5 The optical disc H for the shout disc with LPPs is provided with an LPP detection circuit. The LPP debt test circuit is composed of a binary circuit. The reflected beam from the optical disc is received by a pick-up head, for example, the optical controller is divided into two in the tangential direction of the cable, so that the output signal from the optical detector is obtained. The difference signal, in other words, a radial push-pull signal pp is obtained. The push-pull signal pp has the waveform shown in Fig. 3, and the LPP component is raised by the push-pull signal pp. In this way, by comparing the levels of the push-pull signal PP and the threshold value TH, a pit detection signal PPD is generated before the Lm is detected. 15 As shown in Figure 4, the level change of the push waveform is generated at each of the pick-up and read positions corresponding to Lpp, and is generated at the pre-pit detection signal PPd. The synchronization pulse pSYNC appears in each period τ and exists in the pre-pit detection signal ppD, as shown in FIG. 4. After the synchronization pulse Psync, there are two leading data pulses' at predetermined intervals, but these data pulses do not often exist in various cycles (such as address). As shown in Figure 4, from the synchronization pulse? The pulse in the third position of Xia rides on the previous data pulse of the sector address. When information is to be recorded on the disc, the recording of the f-signal is performed based on the pre-pit detection signal PPD. Requires discs made by disc manufacturers including LPPs to meet standards. The application of the optical disc standard is not limited to the data area of the optical disc, but also the embossed area of the information area. This type of money includes an entire embossed disc consisting of a non-20 200305149 item (such as DVD-RW version 10); and an embossed area consisting of a readable portion and an unreadable portion from the inside of the disc A sequential disc (such as DVD-RW version 1.1) is shown in Figure 5. According to this DVD-RW version 1.1, the 176 control data block is located inside the 5 embossed areas (referred to as the control data section) that make up the readable portion, and 16 subsequent servo blocks make up the unreadable portion. In addition, according to the OVD_RW disc, the readable portion is recorded in a deep phase pit, which can be read to prevent copy-related information. Therefore, there is no L pp formed on the adjacent track of this readable portion on most discs. Between the lines. The unreadable part is formed by shallow phase pits. 10 俾 will prevent Bin 5 from being overwritten and recorded on the area being read. In this way, LPP is shaped like iLpp between adjacent tracks in the data area. Between such unreadable sections is the adjacent trajectory. The LPPs of the unreadable portion are set to determine the address of the data area. From the initial position, the data area is located more toward the outside of the disc than the unreadable portion. 15 In order to determine whether the criteria are met, the signal waveforms of the push-pull signal PP must be measured for the following sections, which are related to the trench area (which is the main area with trench trajectory 'as shown in Figure 2 and includes Data area), the readable portion of the embossed area, and the unreadable portion of the embossed area. Therefore, it is necessary to perform such measurement 'including the starting boundary portion and the ending 20-point boundary portion between the embossed area and the groove interval. It is also important to accurately detect the embossed area during the measurement. In order to detect the embossed areas, it is generally considered that the Lpps preformed on the optical disc are detected, and the embossed areas are determined based on the detected LPPs based on the address information. However, there are many types of discs for measuring waveforms, such as a disc on which LPP is not formed, a disc that accurately detects LPP even if LPP is detected thereon but does not have a valid 200305149 signal quality, and an unspecified Address disc. Therefore, it is impossible to accurately determine the embossed area based on the detected LPPs based on the address information. [Summary of the Invention] 5 Summary of the Invention One object of the present invention is to provide a embossed area detection device that can accurately detect embossed areas on an optical disc. The embossed area detecting device according to the present invention is a device for an optical disc having a track including a main area in which an information signal is recorded, 10 and an embossed area having a preformed pit. The device Includes: a beam irradiation device, which is used to irradiate the wire; a reading signal generating device, which is used to receive the reflected light of the beam irradiated on the trajectory, to generate a reading signal; a component detection device, which is used for detection One of the read signals has a modulation amplitude or a direct current component; and a judging device for judging the embossed area of the optical disc based on a change in the modulation amplitude or the DC component of the 15 read signals detected by the component detection device . The embossed area detection method according to the present invention is a method for an optical disc having a trajectory, the trajectory including a main area in which an information signal is recorded, and a embossed area having a preformed pit. The method includes The following steps: irradiate the wire with 20 beams of light; receive the reflected light from the beam irradiated on the trajectory to generate a read signal; detect the modulated amplitude or DC component of the read signal; and the modulated amplitude based on the read signal Or the DC component changes to determine the boundary position of the embossed area of the disc. Brief description of the drawing 200305149 The first picture shows the calibration of the DVD-RW area in the view; the second picture shows the composition of the DVD-RW recording surface; the third picture shows the radial push-pull signal waveform including the LPP component; Fig. 4 is a waveform diagram showing the detection signal of the front pit; Fig. 5 is a diagram showing the readable and unreadable parts of the embossed area; Fig. 6 is a block diagram showing a waveform measuring device. The embossed area detection device according to the present invention is adopted. FIG. 7 is a block diagram showing the structure of a head amplifier and a pre-pit 10 pit detection circuit of the device of FIG. 6; FIG. 8 is a block diagram showing FIG. 6 The schematic composition of the oscilloscope of the device; Figure 9 is a flowchart showing the waveform measurement operation using a personal computer; Figures 10A to 10C are views illustrating the waveform examples displayed on the oscilloscope through the waveform measurement operation of Figure 9; The figure is a flowchart showing the movement of the start and boundary position of the embossed area; Figure 12 is a flowchart showing the movement of the end and boundary position of the embossed area; and the 13th diagram is a flowchart showing the start and boundary position of the embossed area Figure 14 is a flowchart showing the movement operation of the end boundary position of the embossed area; Figure 15 is a flowchart showing the movement operation of the start boundary position of the embossed area; and 9 200305149 is the flow The figure shows the end edge K of the embossed area. A detailed description of the preferred embodiment 3 of the cold movement C. 5 10 The details f of the specific embodiment of the present invention will be described later with reference to the drawings. Fig. 6 illustrates a waveform measuring device in which a convex region system according to the present invention is used. This waveform measurement spare is included in the read-write head 2 and includes a so-called beam generating device (picture not shown), which is used for recording information on a rewritable optical disc 1. The optical disc 1 has a recording surface as shown in FIG. 2 So: a beam taking generating device (not shown in the figure), which is used to read the record Λ (including poor information) from the optical disc; and a quadrant optical debt detector (the symbol in Figure 7 is as). . The recorded beam generating device and the reading beam generating device do not need to be separately provided, but may be provided as a single-beam generating device. The I is placed in the recording period to generate the recording beam and the reading beam is generated in the reading period. 15 The reading beam generating device irradiates the optical disc i with the reading beam, and the optical disc 旋转 is rotationally 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, and the photoelectric conversion element tl has a light receiving surface 20a to 20d of information recording trajectory (groove trajectory 103) on the optical disc. The tangent direction and the orthogonal direction to the tangent to the recording track are divided into four. This photoelectric conversion element receives the reflected light from the respective information reading points of the four light receiving surfaces 20a to 20d on the optical disc, and converts each reflected light into a telecommunication signal 'and outputs it 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 driving signal based on the light receiving signals 1 ^ to 1101, respectively. Focus 20 200305149 A point error signal is supplied to the 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 in the figure) mounted on the head 2. The tracking actuator adjusts the information reading point formation position in the radial direction of the optical disc 5 based on the tracking error signal. The slider driving signal is supplied to the slider 10. The slider 10 moves the read / write head in the radial direction of the optical disc at a speed corresponding to the drive signal of the slider. The light receiving signals Ra to Rd are also supplied to a head amplifier 25, which has adders 21 to 23 and a subtracter 24. The adder 21 adds the light receiving signals Ra and 10 Rd, and the adder 22 adds the light receiving signals Rb and rc. In particular, the adder 21 adds the light receiving signals Ra and Rd obtained by receiving light through the light receiving surfaces 20a and 20d of the quadrant photodetector 20, and outputs an accumulated light receiving signal Ra + d. The adder 22 adds the light receiving signals Rb and Rc obtained by receiving light through the light receiving surfaces 20b and 20c of the quadrant photodetector 20, and outputs the accumulated light to receive the 15 received signals Rb + c. The adder 23 adds the output signals Ra + d and Rb + c obtained from the adders 21 and 22. The output signal from the adder 23 is a read signal or an Rp signal, and is supplied to the information data reproduction circuit 30 and the address detection circuit 50. The information data reproduction circuit 30 binarizes the read signal, and then continuously performs demodulation processing, 20 error correction processing, and various types of information decryption processing, so the information data (image data, audio data, computer data) recorded on the disc 1 is reproduced and output ). The LPF 27 is connected to the output of the adder 23. The LPF 27 extracts the low-frequency component (for example, 30 kHz or below) of the output RF signal by the adder 23, and outputs this component as an RF DC component signal. 11 200305149 The subtracter 24 subtracts the output "5 Tiger Rb + c" of the adder 22 from the output signal Ra + d of the adder 21. The output signal of the subtractor 24 becomes a signal indicating that the line 103 The frequency caused by shaking is supplied to the main shaft servo device 26 of the motor 9 by the main motor. The main shaft servo device 26 rotates and drives the main shaft horse 5 to 9 so that the frequency of the output signal obtained from the subtractor 24 is set to correspond to the predetermined speed frequency. The composition of the servo motor 26 has been disclosed in Japanese Patent Application No. H10-283638, and its detailed description will be deleted later. As shown in FIG. 2, the front pit detection circuit 5 detects the land front pit The pit (LPP) 104, which is based on the respective output from the adder 21'22, is formed as No. 10 on the land line (pre-pit line) 10 of the optical disc 1; and then the recording process The circuit 7 and the address detection circuit 51 supply a pre-pit price measurement signal PPD. Based on the pre-pit detection signal PPd, the recording processing circuit 7 confirms that the read-write head 2 is currently recording a position, or the groove track 1 〇3 position, and supply control to the servo control device 4 ## is used to make the head 2 perform the trajectory jump from the recording position to the predetermined recording position. The recording processing circuit 7 also performs predetermined recording modulation processing on the information information to be recorded, thereby generating a recording modulation data signal This signal is supplied to the read / write head 2. The recording beam generating device installed on the read / write head 2 generates 20 recording light beams based on such recording modulation data signals, and the recording beam is irradiated on the groove track 103 of the optical disc 1. The heat is thus transferred to the area of the groove trajectory 103 illuminated by the recording beam, so that information pits (symbols) are gradually formed in this area. The composition of the recording processing circuit 7 is also disclosed in Japanese Patent Application Laid-Open No. H10-283638. 12200305149 As shown in Figure 7, the pre-pit detection circuit 5 is composed of the following components: an amplifier 31 for amplifying the output signal Ra + d from the adder 21, a The amplifier 32 provides an output signal Rb + c from the adder 22, a subtracter 33 for subtracting the output signal of the amplifier 32 from the output signal of the amplifier 31, and then outputs its value, and a binary voltage Road 34, which is used for the threshold TH unary 3 3 output # 5 tiger 'thus 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 〇 In the read / write head 2, the signal output by the subtractor 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 a push-pull signal PP. RF signal, RF DC component Signal and push-pull signal pp are supplied to the oscilloscope 61 〇 15 20
不波器61分別輸入RF信號、1^直流分量信號及推挽信 旒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6卜個人電觸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 如GPIB、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⑽ 包含-A/D轉換器9卜-控制電路92、抽樣記憶體％、顯示 記憶體94、X及Y驅動器95、96、—顯示面板97…操作單 元98、以及一介面99。錄轉換器91將三個輪入類比信號轉 成數位信號。控制電路92連續將A/D轉換器9ι所得數奸號 13 200305149 之抽樣資料寫入抽樣記憶體93，以及由抽樣記憶體％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。顯示記憶體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 5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 抽樣記憶體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。 10 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1開始再生操作（步驟S1)。於此再生操作中，伺 服系統例如主軸伺服、追蹤伺服、及焦點伺服全部皆關閉， 俾致能藉讀寫頭2由光碟1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 15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 系統，沿溝槽軌線之蹤跡消失，如此讀取束照射於光碟}之 20 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 推挽信號PP、RF信號及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)對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 驟S5)。例如個人電腦62由示波器讀取推挽信號PP之振幅 14 200305149 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 5自個人電腦62之指令進行或可人工進行。換言之如第 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 鲁 10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丨浮凸區 之起點邊界位置（步驟S8)。此種步驟88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信號及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係類似前述步驟幻及以。例如 馨 如第10B圖所示，推挽信號PP、RF信號及RF直流分量信號 波形同時以同一時間基準顯示於示波器61之顯示畫面上。 20由此項顯示可知，讀取束於光碟1之照射位置係根據光 之偏心ϊ而於光碟徑向方向起伏波動，包括溝槽區與浮凸 區可讀取部分間之邊界。 個人電腦62測定介於可讀取部分與溝槽區間邊界部分 之推挽#號PP之正振幅（零或零以上之振幅位準）ppi以及負 15 200305149 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： ， 5 I PPi | =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SI2)。換言之求出I PPi I /ppb及I ppj I /ppb。根據DVD_RW標準須滿足 I PPi I /ppb>〇.2及 I PPj I _ 10 /ppb>0 o 若於步驟S 7，個人電腦6 2決定波形測量為光碟i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 15服系'統開啟而藉讀寫頭2由光碟】連續讀取(步驟§14”此時 推挽信號P P、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係類似前述步驟以及％。 鲁 例如如第10C圖所示’推挽信號PP、RF信號及奸直流分量 信號波形同時於相同時間基準顯示於示波器&之顯示晝面 20上。讀取束於光碟1之照射位置係、根據光碟1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 取部分於光碟經向方向狹窄，因此當沿溝槽軌線之縱跡因 追縱伺服系統之開啟而消失時，可讀取部、不可讀取部及 16 200305149 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 5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。 10 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S1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 偵測電路50偵測得之位址（步驟S22)。位址偵測電路5〇及位 址偵測電路51皆為基於來自頭放大器25之輸出信號而偵測 15讀取光束照射位置位址之電路。位址偵測電路50根據RF信 唬偵測頊取束照射位置位址，位址偵測電路51根據前置凹 坑偵測信號讀取束照射位置位址。個人電腦62決定 ft?、射位置位址疋否為可讀取部分之預定起點位址（步驟 S23)。若讀取光束照射位置位址非為可讀取部分起點位 2〇址，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位址，則判定讀取光束照射 位置已經移動至光碟丨之浮凸區的起點邊界位置。 現在將說明步驟S13之操作，_取光東隨位置移動 至光碟1浮凸區之終點邊界位置。 17 200305149 個人電腦62就光碟1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62言買 取位址偵測電路51偵測得之位址（步驟S32)。然後個人電腦 5 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玎讀取部分内 部位址，則讀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 束照射位置已經移動至光碟1浮凸區之終點邊界位置。 10 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 測定係依浮凸區前及後的溝槽區不存在記錄資訊決定。 15 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S4i)。步驟 S41係以步驟S21之方式執行。個人電腦62測定尺!7信號振幅 AC、及RF直流分量信號電壓!^(步驟S42)。好信號振幅 AC、及RF直流分量信號電壓dc(步驟S42)可讀取自供給示 20波器612RF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RFi§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 後判定調變振幅Mod是否為60%或以上（步驟S44)。若 200305149The non-wave filter 61 inputs an RF signal, a DC signal, and a push-pull signal 旒 PP, respectively, and samples these signals and displays their waveforms. The specific composition of a personal computer (hereinafter referred to as a PC) 62 connected to an oscilloscope is not illustrated, but it contains at least one CPU and internal memory. The connection between the personal computer 62 and the oscilloscope 61 is based on, for example, an interface standard such as GPIB, 10BASE-T, or RS-232C. The oscilloscope 61 can be composed as shown in FIG. 8, for example. In other words, the oscilloscope includes an A / D converter 9 and a control circuit 92, a sampling memory%, a display memory 94, X and Y drivers 95, 96, a display panel 97, an operation unit 98, and an interface 99. The recording converter 91 converts three round-in analog signals into digital signals. The control circuit 92 continuously writes the sampling data of the serial number 13 200305149 obtained by the A / D converter 9 to the sampling memory 93, and reads the data to be displayed from the sampling memory%, and writes this data to the display memory 94. And arrange this information. The display memory 94 includes a storage position corresponding to each pixel of the display panel 97. The X and Y drivers 95 and 96 drive the display panel 97 according to the data written into the display memory 94, so the input analog signal waveform is displayed on the display panel 97. The interface 99 is based on, for example, an interface standard such as GpiB, 10BASE-T, or RS-232C for connection to the personal computer 62, and writes data written in the sampling memory 93 to the personal computer 92 through the control circuit 92. The interface 99 also relays instructions from the personal computer 62 to the control circuit 92. 10 As shown in FIG. 9, in the waveform measuring device of such a configuration, the personal computer 62 starts the reproducing operation on the optical disc 1 (step S1). During this reproduction operation, the servo systems such as the spindle servo, the tracking servo, and the focus servo are all turned off, so that the optical disk 1 can be read by the read / write head 2. Then, the reading beam from the head 2 moves to the irradiation position (reading position), which is a position on the disc with a radius of 25 mm and 15 positions (step S2). In other words, in the groove area of the optical disc 1, the reading beam is moved to the irradiation position by the jumping of the track. When the reading beam has been moved to the irradiation position, the separate tracking servo system is turned on (tracking servo control is suspended), so that reading from the optical disc 1 by the read / write head 2 is continued (step S3). By turning on the tracking servo system, the trace along the groove trajectory disappears, so that the reading beam is irradiated on the optical disc. The 20 irradiation positions fluctuate in the radial direction according to the eccentricity of the optical disc 1. The waveforms of the push-pull signal PP, RF signal, and RF DC component signal are then displayed on the oscilloscope 61 (step S4). The ratio ppb (AC) / ppb (DC) of the amplitude ppb (AC) of the push-pull signal PP to the DC level ppb (DC) of the RF DC component signal is calculated as ppb (step S5). For example, the personal computer 62 reads the amplitude of the push-pull signal PP 14 200305149 ppb (AC) and the DC level ppb (DC) of the RF DC component signal from an oscilloscope, and finds ppb = ppb (AC) / ppb (DC). The personal computer 62 is set so that the cursor (reference line) is positioned at the center of the amplitude of the push-pull signal PP on the display screen of the oscilloscope 61 (step S6). This step may be performed according to an instruction from the personal computer 62 or may be performed manually. In other words, as illustrated in the figure, the cursor movement sets the amplitude center of the push-pull signal PP at the zero level (for example). When the personal computer 62 finishes the measurement in the groove area, it is determined whether this waveform measurement is a measurement value set at the start boundary position or the end boundary position of the embossed area of the optical disc 1 (step S7). The user can perform this determination using an input operation. If the measurement is judged as a waveform measurement value of the starting boundary position of the embossed area of the optical disc 1, the irradiation position of the reading beam from the read / write head 2 moves to the starting boundary position of the embossed area of the optical disc (step S8). The movement of such step 88 will be described in detail later. After moving to the starting and boundary position of the embossed area, the separate tracking servo system 15 is turned on and continues to be read by the optical disc 1 by the read / write head 2 (step S9). At this time, the waveforms of the push-pull signal PP, RF signal and RF DC component signal are respectively It is displayed on the oscilloscope ^ 61 (step S10). Steps S9 and S10 are similar to the previous steps. For example, as shown in FIG. 10B, the waveforms of the push-pull signal PP, RF signal, and RF DC component signal are simultaneously displayed on the display screen of the oscilloscope 61 at the same time reference. 20 From this display, it can be seen that the irradiation position of the reading beam on the optical disc 1 fluctuates in the radial direction of the optical disc according to the eccentricity of the light, including the boundary between the readable portion of the groove area and the embossed area. The personal computer 62 measures the positive amplitude (zero or above amplitude level) ppi of push-pull #PP between the readable portion and the boundary portion of the groove interval, and the negative 15 200305149 amplitude (zero or below amplitude level) ) PPj (step S11). Positive amplitude PPi and negative amplitude PPj can determine its value for all waveforms in the boundary part, or its minimum value can be determined. The ratio of the measured positive amplitude PPi and negative amplitude PPj to the DC level of the RF direct current component signal of each zone is calculated as follows:, 5 I PPi | = PPi / ppb (DC) · I PPj I = PPj / ppb (DC) I PPi I and I PPj I thus calculated are normalized by ppb at the aforementioned 25 mm radius position (step SI2). In other words, I PPi I / ppb and I ppj I / ppb are obtained. According to the DVD_RW standard, I PPi I / ppb > 0.2 and I PPj I _ 10 / ppb> 0 are required. If at step S7, the personal computer 62 determines that the waveform is measured as the waveform at the end boundary of the embossed area of the disc i, then The irradiation position of the reading beam from the head 2 moves to the end boundary position of the embossed area of the optical disc 1 (step S13). The movement of step S13 will be described later. After moving to the end boundary position of the embossed area, track the servo system separately and start reading from the optical disc by using the read / write head 2] (step §14). At this time, the push-pull signal PP, RF signal and RF DC component The signal waveforms are displayed on the oscilloscope 61 (step S15). Steps S14 and S15 are similar to the previous steps and%. For example, as shown in Figure 10C, the waveforms of the push-pull signal PP, RF signal, and DC component signal are at the same time reference. Displayed on the oscilloscope & display day surface 20. The reading position of the reading beam on the optical disc 1 fluctuates in the radial position of the optical disc according to the eccentricity of the optical disc 1, including the readable portion and the unreadable portion of the embossed area. Boundary, and the boundary between the unreadable portion and the groove interval. The unreadable portion is narrow in the warp direction of the optical disc, so when the longitudinal track along the groove track disappears due to the opening of the tracking servo system, the readable portion , Unreadable section and 16 200305149 The groove area accepts reading. The personal computer 62 measures the boundary between the readable section and the unreadable section, the positive amplitude ppi and negative amplitude PPj of the push-pull signal PP; Do not The boundary between the readable portion and the groove interval, the positive amplitude 5 PPi and negative amplitude PPj of the push-pull signal PP (step S16). Step S16 is similar to step S11. Then the positive amplitude ppi and negative amplitude measured at each boundary PPj is individually standardized by ppb (step S12). The operation of step S8 will now be described, and the reading beam irradiation position is moved to the starting boundary position of the embossed area of the disc 1. 10 The personal computer 62 starts from the disc 1 shown in FIG. Reproduction operation (step S21). The operation of step S21 is performed in a similar manner to step S1. The reproduction position starts from the inner position of the disc 1 than the embossed area. The reading is detected by the personal computer 62 by the address detection circuit 50 Address (step S22). Both the address detection circuit 50 and the address detection circuit 51 are circuits that detect 15 reading beams to irradiate the position address based on the output signal from the head amplifier 25. The address detection circuit 50 The beam irradiation position address is acquired based on the RF signal detection, and the address detection circuit 51 reads the beam irradiation position address based on the pre-pit detection signal. The personal computer 62 determines ft? Is the predetermined starting address of the readable part (step S23) If the reading beam irradiation position address is not the starting position bit of the readable part 20, then read the reading beam irradiation position address again. If the reading beam irradiation position address is the starting point address of the readable part , It is determined that the irradiation position of the reading beam has moved to the starting boundary position of the embossed area of the optical disc 丨. Now, the operation of step S13 will be described. _Fetching East moves with the position to the end boundary position of the embossed area of optical disc 1. 17 200305149 The personal computer 62 starts the reproduction operation of the optical disc 1 as shown in FIG. 12 (step S31). The operation of step S31 is performed similarly to the step si, and the reproduction position starts on the optical disc 1 at an inner position than the groove area behind the embossed area. . The personal computer 62 buys the address detected by the address detection circuit 51 (step S32). The personal computer 5 62 then determines whether the irradiation position address is a predetermined address inside the unreadable portion (step S33). If the reading beam irradiation position address is not the internal address of the reading part, the reading beam irradiation position address is read again. If the reading beam irradiation position address is the internal address of the unreadable portion, it is determined that the reading beam irradiation position has moved to the end boundary position of the embossed area of the optical disc 1. 10 In Figures 11 and 12, the start and end boundary positions of the embossed area are determined based on the read address, but can also be determined by the modulation amplitude. The operation of moving the reading beam irradiation position to the start or end boundary position on the disc by detecting the modulation amplitude will now be described. Note that the modulation amplitude is determined by the absence of recorded information in the groove area before and after the embossed area. 15 When moving to the starting edge boundary position of the embossed area, the personal computer 62 first starts the reproduction operation of the optical disc 1, as shown in FIG. 13 (step S4i). Step S41 is performed in the manner of step S21. The personal computer 62 measures the signal amplitude AC and the RF DC component signal voltage! ^ (Step S42). The good signal amplitude AC and the RF DC component signal voltage dc (step S42) can be read from the 612 RF signal supplied to the oscilloscope or from the RF signal and the RF DC component signal; or the average amplitude AC voltage of the RF DC component. DC can be determined as its measurement value. If the RFi§ amplitude AC and RF DC component signal voltage DC are measured, the measured values are used to calculate the modulated amplitude Mod based on AC / DC (step S43). It is then determined whether the modulation amplitude Mod is 60% or more (step S44). If 200305149
Mod<60%，[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 5 光碟1之浮凸區之起點邊界位置。 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62測量RF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 10量值根據AC/DC求出調變振幅Mod(步驟S53)。步驟S52及 S 5 3係以類似步驟s 4 2及S 4 3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 方、9/。至60%之範圍，表示浮凸區或溝槽區之未記錄任何資 訊之可讀取區係位在光碟之進一步内側，因而返回再生操 15作（步驟S55)，以及重複步驟S52。於步驟S54，若M〇d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碎凸區之 起點邊界位置。 20線供測定調變振幅Mod。 注意調變振幅_電路（圖巾未顯㈤可提供於即信號 現在將說明藉偵測RF直流分量信號位準 ’移動讀取光Mod < 60%, [determining that the reading beam irradiation position is located in the groove area without information recording], so return to the reproduction operation (step S45) and repeat step S42. If at step S44, Mod-60%, the information is recorded so as to indicate the readable portion of the embossed area, so it is determined that the irradiation position of the reading beam has moved to the starting boundary position of the embossed area of the 5 disc 1. When moving to the end boundary position of the embossed area, the personal computer 62 starts the reproduction operation on the optical disc 1, as shown in Fig. 14 (step S51). Step S51 is performed in a similar manner to step S31. The personal computer 62 measures the RF signal amplitude AC and the voltage DC of the RF DC component signal (step S52), and uses the measured value to obtain a modulation amplitude Mod from AC / DC (step S53). Steps S52 and S 5 3 are implemented in a manner similar to steps s 4 2 and S 4 3. It is then determined whether the calculated modulation amplitude Mod is in the range of 9% to 60% (step S54). If Mod is not square, 9 /. A range of up to 60% indicates that the readable area where no information is recorded in the embossed area or groove area is located further inside the disc, and therefore returns to the reproduction operation (step S55), and repeats step S52. In step S54, if Mod is in the range of 9% to 60%, the information is recorded, indicating the unreadable portion of the embossed area. Therefore, it is determined that the irradiation position of the reading beam has moved to the starting boundary position of the broken area of the optical disc. . 20 lines for measuring modulation amplitude Mod. Pay attention to the modulation amplitude_circuit (the picture is not displayed and can be provided immediately. The signal will now be explained by detecting the level of the RF DC component signal.
後之溝槽區不存在有記錄資訊決定。 200305149 §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1進行再生操作，如第15圖所示（步驟S61)。步驟 S61係類似步驟S21執行。個人電腦直流分量信號 s電壓1步驟S62)。RF直流分量信號電壓DC係讀取自供給 不波為61之RF直流分量信號。於一段預定時間，RF直流分 里k號之平均電壓DC決定為此測量值。當測得rf直流分量 仏號電壓DC時判定該電壓DC是否由高位準改成低位準（步 i^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。若於高位 1〇 進 平’則讀取光束照射位置係於溝槽區，因而返回再生操作 (步驟S64)，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 4 ’如此判定讀取光束照射位置已經移動至光碟1浮凸區之 起點邊界位置。 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S71 係以類似步驟S31之方式執行。個人電腦62測定RF直流分量 仏號之電壓DC(步驟S72)，以及判定測得之RF直流分量信 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 直流分量信號由低位準改成高位準。若1^7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 頊取部，因此返回再生操作（步驟S74)，且重複步驟S72。 若於步驟S73,判定RF直流分量信號已經由低位準改變成高 20 200305149 位準，則指示浮凸區或隨後溝槽區之不可讀取部分，如此 判定讀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。 注意當第10B及10C圖所示，包括浮凸區及溝槽區二者 5 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 波信號給追蹤词服系統進行步驟S10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。 此外前述具體實施例中，說明一種情況，其中本發明 之浮凸區偵測裝置應用至測量裝置，但本發明並非囿限於 10此。例如於’當因浮凸區無法讀取部分之LPP偵測 困難，造成無法偵測LPP時，資料無法記錄於恰在浮凸區後 方之 > 料區，結果該光碟被視為無用光碟處理。本發明可 應用至記錄裝置作為對抗此項問題之措施。換言之當無法 偵測浮凸區之非可讀取部分之Lpp時，讀取信號之調變振幅 15或直流分量經偵測出，用來偵測浮凸區無法讀取部分之終 點位置，或偵測資料區起點位置，因而資料被記錄於浮凸 區正後方之資料區。 “如前文說明，根據本發明，光碟之浮凸區係基於尸自 光碟之讀取信號之調變振幅或直流分量的改變而偵测，士 此可準確偵測光碟浮凸區，由其起點邊界位置至其終點邊 界位置’而無需使用基於LPP偵測之位址資訊。 【闺式簡單說明】 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； 21 200305149 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； 第5圖為視圖顯示浮凸區之可讀取部分及不可讀取部 分； 5 第6圖為方塊圖顯示一種波形測量裝置，其中採用根據 本發明之浮凸區偵測裝置； 第7圖為方塊圖顯示於第6圖裝置之頭放大器及前置凹 坑摘測電路之結構， 第8圖為方塊圖顯示第6圖裝置之示波器之示意組成； 10 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 作； 15 第12圖為流程圖顯示浮凸區之終點邊界位置之移動操 作； 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 20 作； 第15圖為流程圖顯示浮凸區之起點邊界位置之移動操 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 200305149 【圖式之主要元件代表符號表】 1···光碟 61...示波器 2...讀寫頭 62…個人電腦 4...伺服控制裝置 91... A/D轉換器 5...前置凹坑偵測電路 92...控制電路 7...記錄處理電路 93...抽樣記憶體 9...主轴馬達 94...顯示記憶體 10…滑件 95 ...X驅動裔 20...象限光偵測器 96 ...Y驅動器 20a-d··.光接收面 97...顯示面板 21-23...加法器 98…操作單元 24...減法器 99...介面 25...頭放大器 101…光碟基板 26...主軸伺服裝置 102...陸地軌線 27...LPF 103…溝槽轨線 30...資訊資料再生電路 104...陸地前置凹坑 31，32...放大器 S1-S16，S21-S23，S31-S33， 33...減法器 S41-S45，S51-S55，S61-S64， 34.. .二進制化電路 35.. .LPF 50，51...位址偵測電路 S71-S74.··步驟 23There is no record information decision in the subsequent groove area. 200305149 § When moving to the starting boundary position of the embossed area, the personal computer 62 starts the reproduction operation of the optical disc 1, as shown in FIG. 15 (step S61). Step S61 is performed similarly to step S21. Personal computer DC component signal s voltage 1 step S62). The RF DC component signal voltage DC is read from the supplied RF DC component signal of 61. In a predetermined period of time, the average voltage DC of k number in the RF DC division is determined as this measurement value. When the rf DC component No. voltage DC is measured, it is determined whether the voltage DC is changed from a high level to a low level (step i ^ S63). When the reading beam is irradiated from the groove region to the readable portion of the embossed region, the RF DC component signal is changed from a high level to a low level. If it is leveled at the high position 10 ', the irradiation position of the reading beam is in the groove area, so the process returns to the reproduction operation (step S64), and step S62 is repeated. If at step S63, the RF DC component signal is measured as having been changed from a high level to a low level, it indicates that the embossed area can be read. 4 'This determines that the reading beam irradiation position has moved to the starting boundary of the embossed area of disc 1. position. When moving to the end boundary position of the embossed area, the personal computer 62 starts the reproduction operation on the optical disc 1, as shown in Fig. 16 (step S71). Step S71 is performed in a similar manner to step S31. The personal computer 62 measures the voltage DC of the RF DC component signal (step S72), and determines whether the measured RF DC component signal voltage Dc has been changed from a low level to a high level (step S73). When the reading beam is irradiated from the readable portion of the embossed area to the unreadable portion, the RF DC component signal is changed from a low level to a high level. If the voltage DC of the 1 ^ 7 DC component signal is at a low level, the irradiation position of the reading beam is located in the snapping portion of the embossed area, so the process returns to the regeneration operation (step S74), and step S72 is repeated. If it is determined in step S73 that the RF DC component signal has been changed from a low level to a high 20 200305149 level, an unreadable portion of the embossed area or the subsequent groove area is indicated, so it is determined that the irradiation position of the reading beam has moved to the optical disc 1 The end boundary position of the embossed area. Note that as shown in Figures 10B and 10C, the waveform diagram 5 including both the embossed area and the groove area 5 cannot be obtained due to a small amount of eccentricity of the optical disc 1. The sine wave signal can be supplied to the tracking word server system to perform step S10. And the waveform display of S15, in which the reading beam irradiation is forced to include the embossed area and the groove area. In addition, in the foregoing specific embodiment, a case is described in which the embossed area detecting device of the present invention is applied to a measuring device, but the present invention is not limited to this. For example, when the LPP cannot be detected due to the unreadable part of the embossed area, and the LPP cannot be detected, the data cannot be recorded in the > material area just behind the embossed area. . The present invention can be applied to a recording device as a countermeasure against this problem. In other words, when the Lpp of the non-readable portion of the embossed area cannot be detected, the modulation amplitude 15 or DC component of the read signal is detected to detect the end position of the unreadable portion of the embossed area, or The starting position of the data area is detected, so the data is recorded in the data area directly behind the embossed area. "As explained earlier, according to the present invention, the embossed area of the optical disc is detected based on the change in the modulation amplitude or the DC component of the read signal from the corpse. Boundary position to its end boundary position 'without using address information based on LPP detection. [Brief description] Figure 1 shows the calibration of each area of the DVD-RW in the view; Figure 2 shows the DVD-RW record in the view. Surface composition; 21 200305149 Figure 3 shows the waveform of the radial push-pull signal containing the LPP component in the view; Figure 4 shows the waveform of the pre-pit detection signal in the view; Figure 5 shows the embossed area in the view Readable part and unreadable part; 5 FIG. 6 is a block diagram showing a waveform measurement device using the embossed area detection device according to the present invention; FIG. 7 is a block diagram showing the head of the device in FIG. 6 The structure of the amplifier and pre-pit test circuit. Figure 8 is a block diagram showing the schematic composition of the oscilloscope in Figure 6. 10 Figure 9 is a flowchart showing the waveform measurement operation by a personal computer; Figures 10A to 10C For the view Explain the waveform example displayed on the oscilloscope through the waveform measurement operation results in Figure 9; Figure 11 is a flowchart showing the movement of the starting and boundary positions of the embossed area; 15 Figure 12 is a flowchart showing the end and boundary of the embossed area Position movement operation; Figure 13 is a flowchart showing the movement operation of the start and boundary position of the embossed area; Figure 14 is a flowchart showing the movement operation of the end and boundary position of the embossed area; Figure 15 is a flowchart display The movement operation of the starting and boundary positions of the embossed area; and FIG. 16 is a flowchart showing the movement operation of the ending and boundary position of the embossed area. 0 22 200305149 [Representative symbol table of the main components of the drawing] 1 ··· CD 61 .. Oscilloscope 2 ... Reading head 62 ... Personal computer 4 ... Servo control device 91 ... A / D converter 5 ... Front pit detection circuit 92 ... Control circuit 7 ... Record processing circuit 93 ... Sampling memory 9 ... Spindle motor 94 ... Display memory 10 ... Slider 95 ... X drive line 20 ... Quadrant light detector 96 ... Y drive 20a -d ... Light receiving surface 97 ... Display panel 21-23 ... Adder 98 ... Operating unit 24 ... subtractor 99 ... interface 25 ... head amplifier 101 ... disc substrate 26 ... spindle servo 102 ... land track 27 ... LPF 103 ... groove track 30 ... Information material reproduction circuit 104 ... land front pits 31, 32 ... amplifiers S1-S16, S21-S23, S31-S33, 33 ... subtractors S41-S45, S51-S55, S61-S64, 34 .. Binary circuit 35 .. LPF 50, 51 ... Address detection circuit S71-S74 ... Step 23