200816190 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種功率控制方法，特別是關於一種應 用於光碟片燒錄之功率控制方法。 【先前技術】 科技的進步與網路的便捷，造成網路資訊大量地湧入 個$電腦巾，也使得儲存㈣帛之光學記錄舰成為隨手 可得之工具。目前用來長期且大量儲存資料之光學記錄媒 體主要係利用燒錄機來將資料進行燒錄，以將資料完整地 儲存在光學記錄媒體之中。 請參照圖1所示，其係為習知一光碟機燒錄一光碟片 之一流程®。在寫人使用者資料至光碟片之前，首先會先 對光碟機之一讀寫頭進行功率曲線校正（p〇wer curve Calibration) ’亦即以不同的電壓驅動光碟機之一讀寫頭之 雷射，並量測在各電壓下讀寫頭之雷射的輸出功率·，藉以 取得讀寫頭之雷射驅動電壓與輸出功率之一功率曲線，曰以 供後續功率控制之甩（步驟S11)。接著進行—最佳化功率 校正（Optimum P0wer CaHbration，OPC)，藉以得到 _ 碟片之最佳校正功率（步驟S12)。 … 完成前二步驟之後，讀取頭依據最佳校正功率對光碟 片進行燒錄，藉以將使用者資料寫人至光碟片上（步驟 驟314)直到謂已完整地寫人至光碟片上而完成燒錄（步 6 200816190 然而’在實際光碟片燒錄的⑯ 佳功率並非固定，而 2中’燒錄光碟片的最 材質的影響而產生改變:例如，及光碟片本身 的讀取頭若欲維持相同的燒錄^ U越局時，光碟機 錄功率。此外，光1 ’則需要輸出較大的燒 率的變化;再者:，的改變也會影響最佳燒錄功 相同等製程因素以及光碟片=或= 成最佳燒錄功率的改變。 ，亦會造 時，若不對片燒錄過程中最佳燒錄功率產生變動 日守右不對其燒錄功率予以補償 燒錄品質產生差異或資料無法完整儲存;:= 成光碟片燒錄完成後’資料的讀取不易或讀取失敗。 【發明内容】 種依據時基誤差回授 有鐘於上述課題，本發明提供一 之功率控制方法。 本發明揭露-種依據時基誤差回授之功率控制方 法’這個方法包含以下步驟：對—光碟片進行最佳化功率 校正:以取得-基準燒錄功率。然後，將基準燒錄功率與 二測試值分別相加及相減而得一第—寫入功率及一第二 寫入功率。接著，以第-寫入功率來燒錄光碟片之一第一 =段，並讀取光碟片之第一片段，以偵測一第一時基誤差 λ號之後，以第二寫入功率來燒錄光碟片之一第二片 段’並讀取光碟片之第二片段m第二時基誤差訊 7 200816190 號。以及，比較第一時基誤差訊號與第二時基誤差訊號之 大小，來調整基準燒錄功率。 本發明亦揭露一種依據時基誤差回授之功率控制方 法，這種方法包含以下步驟：對一光碟片進行最佳化功率 校正，以取得一基準燒錄功率。然後，將基準燒錄功率與 一測試值分別相加及相減而得一第一寫入功率及一第二 寫入功率。接著，以第一寫入功率來燒錄光碟片之複數個 第-片段，並讀取光碟片之複數個第一片段，以债測複數 個第了時基誤差訊號。之後，以第二寫人功率來燒錄光碟 片之複數個第二片段，並讀取光碟片之複數個第二片段， 以偵測複數個第二時基誤差訊號。分別平均這些第一時基 誤差訊號與這些第二時基誤差訊號而得一第一誤差 值與:第二誤差平均值。以及，比較第—誤差平均值與第 二誤差平均值之大小，來調整基準燒錄功率。 ^ 【實施方式】 請參照圖2所示，係為本發明較佳實施例之依據 誤差回授之功率控制方法之—流程圖。功率控制方匕 含以下步驟S21〜S28。 侍'包 首先對光碟機之-讀寫頭之雷射進行功率 正，以不同的電壓驅動光碟機之—讀寫頭之雷射，“奴 在各電壓下讀寫頭之雷射的輸出功率，藉以接突里測 雷射驅動電壓與輸出功率之—功率曲綠 =項之 制之用（步驟如）。然後對—光碟片進行最 8 200816190 正’以取得一基準燒錄功率（P)(步驟S22)。將基準燒錄功 率與一測試值（ΔΡ)相加而得一第一寫入功率（P1)，將 基準燒錄功率（P)與測試值（△ P)相減而得一第二寫入功 率（P2)(步驟S23)，這些寫入功率的計算如以下式1與式 2所示： P1=P+A P△ p (式1) (式2) ^然後，以第一寫入功率（pi)燒錄光碟片之一第一片 t以將資料寫入至第一片段上，並讀取光碟片之第一片 ^又朴以摘/則一第一時基誤差（迦er)訊號（J1)(步驟S24)。 接以第二寫入功率（P2)燒錄光碟片之一第二片段，以 將貝料=入至第二片段上，並讀取光碟片之第二片段，以 第—時基誤差訊號（J2)(步驟S25)。之後，比較第 喊决差訊號⑽與第二時基誤差訊號⑽之大小，以 基ί燒錄功率（P)從P為步驟S26) '然後，判斷 =貝料疋否已寫入至光碟片上（步驟s27)。當資料已 ^次Γ畢日$ ’則結束燒錄光碟片（步驟S28)。反之，當仍 Μ待寫入至光碟片日夺’則再重回至步驟S23，並將已 之基準燒錄功率(”取代原基準燒錄功率⑻代入式 沙了/ 2而更新第—寫人功率（P1)及第二寫人功率（P2)， 後的^序執灯錢的步驟，藉以使讀寫頭之雷射以更新 、 寫入功率（Pl)及第二寫入功率（P2)燒錄光碟片 200816190 的其他片段，因而後續的資料得以寫入至光碟片上。 在本實施例中，於上述步驟S26中，當第一時基誤差 汛號小於第一時基誤差訊號時（Π<J2)，則調增基準燒錄功 率凋整後之基準燒錄功率（P〇介於原始的基準燒錄功率 (P)與第一寫入功率（ρι)之間（p/>p);當第二時基誤差訊 號小於第一時基誤差訊號時（J2<J1)，則調減基準燒錄功 率調i後之基準燒錄功率（Px)介於原始的基準燒錄功率 (P)與第二寫入功率(P2)之間（p/<p);當第一時基誤差訊 號等於第二時基誤差訊號時（J1=J2)，則維持基準燒錄功率 而不調整（P^=P)。 此外’在本實施例中，於步驟S24中，讀寫頭先以第 一寫入功率（Pl)燒錄光碟片之第一片段，然後讀寫頭再重 新讀取第一片段並同時偵測第一時基誤差訊號（J1);同樣 地’於步驟S25之中，讀寫頭先以第二寫入功率（P2)燒錄 光碟片之第二片段，然後讀寫頭再重新讀取第二片段並同 時摘測第二時基誤差訊號（J2)。 再者’讀寫頭燒錄光碟片與偵測時基誤差訊號亦可同 時進行’並非必定要先後分別進行。例如於步驟S24中， 當讀寫頭以第一寫入功率（P1)燒錄光碟片時，亦同時偵測 第二時基誤差訊號（J2);同樣地，於步驟S25之中，當讀 寫頭以第二寫入功率（P2)燒錄光碟片時，亦同時偵測第一 時基誤差訊號（Π)。 並晴參照圖3所示，係為本發明另一較佳實施例之依 據時基誤差回授之功率控制方法之一流程圖。本實施例之 200816190 功率控制方法包含以下步驟S31〜S39。 首先對光碟機之-讀寫頭進行功率曲線校正（步驟 S31)。然後對-光碟片進行最佳化功率校正，以取得一基 準燒錄功率（P)(步驟S32)。將基準燒錄功率（p)與一测試 值（ΔΡ)相加而得一第一寫入功率（ρι)，將基準燒錄功率 (P)與測試值（ΔΡ)相減而得一第二寫入功率（p2)(步驟 S33)，步驟S31〜S33係與前述實施例之步驟幻卜S23相同。 接著，以第一寫入功率（P1)燒錄光碟片之複數個第一 片段’以將資料寫入至這些第一片段上，並讀取光碟片之 适些第一片段，以偵測這些第一片段分別對應之複數個第 一時基誤差訊號（Π)(步驟S34)。接著，以第二寫入功率 (P2)燒錄光碟片之複數個第二片段，以將資料寫入至這些 第一片奴上，並讀取光碟片之這些第二片段，以偵測這些 第二片段分別對應之複數個第二時基誤差訊號（J2)(步驟 S35)。若在光碟片上，各第一片段與各第二片段係交錯的 連接，言買寫頭則交替地燒錄第一片段與第二片段，藉以將 資料寫入至第一片段與第二片段。另外，在步驟S34與S35 中，亦類似於前述實施例之步驟S24與S25，讀寫頭燒錄 光碟片與偵測時基誤差訊號可先後分別進行，亦可同時進 行0 然後’分別平均這些第一時基誤差訊號（Π)及這些第 二時基誤差訊號（J2)而得一第一誤差平均值（J1，）與一第 一获差平均值(步驟S36)。之後，比較第一誤差平均 值（jr)與第二誤差平均值（J2，）之大小，以調整基準燒錄 11 200816190 功率由p為ρχ步驟S37)。 之後，判斷全部的資料是否已寫入至光碟片上（步驟 538) ，當資料已寫入完畢時，則結束燒錄光碟片（步驟 539) 。反之，當仍有資料待寫入至光碟片時，則再重=至 步驟S33，並將已調整之基準燒錄功率（ρ〇取代原基準燒 錄功率（Ρ)代入式1、與式2而更新第一寫入功率（1>1)及$ 二寫入功率（Ρ2)，然後再依序執行後續的步驟，藉以使讀 寫頭以更新後的第一寫入功率（Ρ1)及第二寫入功率（ρ2) 燒錄光碟片的其他片段，因而後續的資料得以寫入至光 片上。 ' 此外，在前述的二實施例中，本方法中所使用之光碟 片為可寫一次型光碟（CD_R)、可重覆讀寫型光碟 (CD-RW)、可寫一次型數位影音光碟（DVD七）、可重覆 讀寫型數位影音光碟（DVD_RW，DVD+RW)、以及動能 隨機記憶數位影音光碟（DVD_RAM)、高解晰度數位 影碟（HD-DVD)、藍光光碟（Blue_ray disc)。 ° 綜上所述，因本發明之依據時基誤差回授之功率控制 方法係利用比較第一/第二寫入功率於燒錄光碟片中之不 同片段所偵測到之第一/第二時基誤差訊號的大小，來調整 於光碟片進行最佳化功率校正步驟中所得之基準燒錄功 率，藉以避免於光碟片燒錄過程中，因最佳燒錄功率產生 變動而造成光碟片的燒錄品質差、資料無法完整儲存、資 料讀取不易或讀取失敗之情況發生。 、 以上所述僅為舉例性，而非為限制性者。任何未脫離 12 200816190 本發明之精神與範疇，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 【圖式簡單說明】 ， 圖1為一種習知光碟機燒錄光碟片之一流程圖； 圖2為依據本發明較佳實施例之依據時基誤差回授之 ， 功率控制方法之一流程圖；以及 圖3為依據本發明另一較佳實施例之依據時基誤差回 授之功率控制方法之一流程圖。 元件符號說明： 13200816190 IX. Description of the Invention: [Technical Field] The present invention relates to a power control method, and more particularly to a power control method applied to optical disk burning. [Prior Art] The advancement of technology and the convenience of the Internet have caused a large influx of Internet information into a computerized towel, which has also made the storage of optical recorders (4) an easy-to-use tool. The optical recording medium currently used for long-term storage of large amounts of data mainly uses a burning machine to burn data to completely store the data in an optical recording medium. Please refer to FIG. 1 , which is a process of burning a disc by a conventional optical disc drive. Before writing the user data to the optical disc, firstly, the power curve correction (p〇wer curve Calibration) of one of the optical disc drives is firstly performed, that is, the lightning reading head of one of the optical disc drives is driven by different voltages. Shooting, and measuring the output power of the laser of the head under each voltage, in order to obtain a power curve of the laser driving voltage and the output power of the head, for subsequent power control (step S11) . Next, Optimum P0wer CaHbration (OPC) is performed to obtain the optimum correction power of the _ disc (step S12). After the first two steps are completed, the read head burns the optical disc according to the best correction power, so that the user data is written to the optical disc (step 314) until the complete writing of the human to the optical disc is completed. Record (Step 6 200816190 However, the 16 good powers burned in the actual disc are not fixed, and the influence of the most material of the 2 burned discs changes: for example, if the read head of the disc itself is to be maintained When the same burning is performed, the CD player records the power. In addition, the light 1' needs to output a large change in the burning rate; in addition, the change will also affect the process factors such as the best burning work and The disc == or the change of the best burning power. It will also make a difference. If the best burning power is not changed during the burning process, the right is not compensated for the burning power. The data cannot be stored completely; := After the completion of the burning of the disc, the reading of the data is not easy or the reading fails. [Summary of the Invention] The present invention provides a power control method based on the time base error feedback. The invention discloses a power control method based on time base error feedback. The method comprises the following steps: optimizing the power correction of the optical disc: to obtain the reference recording power. Then, the reference burning power and the second The test values are respectively added and subtracted to obtain a first write power and a second write power. Then, the first = segment of the optical disc is burned by the first write power, and the optical disc is read. The first segment, after detecting a first time base error λ number, burns a second segment of the optical disk with a second write power and reads a second segment of the optical disk m and a second time base error signal 7 200816190. And, comparing the magnitudes of the first time base error signal and the second time base error signal to adjust the reference burning power. The present invention also discloses a power control method based on time base error feedback, the method comprising The following steps: optimizing the power correction of an optical disc to obtain a reference burning power. Then, adding and subtracting the reference burning power and a test value respectively to obtain a first writing power and a first Two write power. Then, the plurality of first-segments of the optical disc are burned at the first write power, and the plurality of first segments of the optical disc are read, and the plurality of first time-base error signals are measured by the debt. After that, the second write is performed. The human power is used to burn a plurality of second segments of the optical disc and read a plurality of second segments of the optical disc to detect a plurality of second time base error signals, respectively averaging the first time base error signals and the first The second time base error signal obtains a first error value and a second error average value, and compares the first error average value with the second error average value to adjust the reference burn power. ^ [Embodiment] Referring to FIG. 2, it is a flow chart of a power control method according to an error feedback according to a preferred embodiment of the present invention. The power control method includes the following steps S21 to S28. The service package first reads and writes to the optical disk drive. The laser of the head performs power positively, and drives the laser of the CD-ROM with different voltages. "The output power of the laser of the head of the head under each voltage, so as to detect the laser driving voltage and Output power - power The manufactured item = purposes (such as step). Then, the optical disc is subjected to a maximum of 200816,190,190 to obtain a reference burning power (P) (step S22). The reference programming power is added to a test value (ΔΡ) to obtain a first write power (P1), and the reference burn power (P) is subtracted from the test value (ΔP) to obtain a second write. Power (P2) (step S23), the calculation of these write powers is as shown in the following Equations 1 and 2: P1 = P + AP Δ p (Equation 1) (Equation 2) ^ Then, with the first write power ( Pi) burning the first piece of the optical disc to write the data to the first segment, and reading the first slice of the optical disc ^ 朴 朴 取 / then a first time base error (ga er) signal (J1) (step S24). And the second writing power (P2) is used to burn a second segment of the optical disc to input the bedding material into the second segment, and read the second segment of the optical disc to read the first time base error signal ( J2) (step S25). Thereafter, comparing the size of the first callback signal (10) and the second time base error signal (10), the base burn power (P) is from P to step S26) 'and then, judge = whether the material has been written to the optical disc (Step s27). When the data has been completed for the next day, the recording of the optical disc is ended (step S28). On the other hand, when it is still necessary to write to the disc, then return to step S23, and replace the original reference burning power (" instead of the original reference burning power (8) into the sand / 2 and update the first - write Human power (P1) and second write power (P2), after the step of executing the light, so that the laser of the head is updated, the write power (Pl) and the second write power (P2) The other segments of the optical disc 200816190 are burned, so that the subsequent data can be written to the optical disc. In the embodiment, in the above step S26, when the first time base error nickname is smaller than the first time base error signal ( Π<J2), the reference burning power after the reference burning power is reduced (P〇 is between the original reference burning power (P) and the first writing power (ρι) (p/>p); when the second time base error signal is smaller than the first time base error signal (J2 < J1), the reference burning power (Px) after the reference burning power adjustment is adjusted is between the original reference burning power (P) and the second write power (P2) (p/<p); when the first time base error signal is equal to the second time base error signal (J1=J2), then Maintaining the reference programming power without adjusting (P^=P). In addition, in the embodiment, in step S24, the head first burns the first segment of the optical disc at the first write power (P1). Then the head re-reads the first segment and simultaneously detects the first time base error signal (J1); likewise, in step S25, the head first burns the disc with the second write power (P2) The second segment of the film, then the read/write head and then re-read the second segment and simultaneously measure the second time base error signal (J2). Further, the 'reading and writing head recording the optical disc and detecting the time base error signal may also Simultaneously, 'does not necessarily have to be performed separately. For example, in step S24, when the head is burning the optical disc at the first write power (P1), the second time base error signal (J2) is also detected at the same time; In step S25, when the head burns the optical disc with the second write power (P2), the first time base error signal (Π) is also detected at the same time. A flow chart of a power control method based on time base error feedback according to another preferred embodiment of the present invention. 2008 of this embodiment The 16190 power control method includes the following steps S31 to S39. First, the power curve correction is performed on the head of the optical disk drive (step S31), and then the optimized power correction is performed on the optical disk to obtain a reference burning power (P). (Step S32). Adding the reference burning power (p) to a test value (ΔΡ) to obtain a first writing power (ρι), and using the reference burning power (P) and the test value (ΔΡ) Subtracting to obtain a second write power (p2) (step S33), steps S31 to S33 are the same as steps S23 of the foregoing embodiment. Next, burning the optical disc at the first write power (P1) a plurality of first segments 'to write data to the first segments, and to read suitable first segments of the optical disk to detect a plurality of first time base error signals corresponding to the first segments respectively (Π (Step S34). Then, a plurality of second segments of the optical disc are burned at a second write power (P2) to write data to the first slaves, and the second segments of the optical disc are read to detect these The second segments respectively correspond to a plurality of second time base error signals (J2) (step S35). If the first segment and the second segment are interlaced on the optical disk, the first and second segments are alternately burned to write the data to the first segment and the second segment. In addition, in steps S34 and S35, similar to steps S24 and S25 of the foregoing embodiment, the read/write head recording optical disc and the detecting time base error signal may be respectively performed separately, or may be simultaneously performed at 0 and then 'average these respectively. The first time base error signal (Π) and the second time base error signal (J2) obtain a first error average value (J1,) and a first difference average value (step S36). Thereafter, the magnitude of the first error average (jr) and the second error average (J2,) are compared to adjust the reference burn 11 200816190 power from p to ρ χ step S37). Thereafter, it is judged whether or not all the data has been written onto the optical disc (step 538), and when the data has been written, the burning of the optical disc is ended (step 539). On the other hand, when there is still data to be written to the optical disc, then again = to step S33, and the adjusted reference burning power (ρ〇 replaces the original reference burning power (Ρ) into Equation 1, and Equation 2 And updating the first write power (1>1) and the second write power (Ρ2), and then performing the subsequent steps in order to make the read/write head update the first write power (Ρ1) and the first Two write powers (ρ2) are used to burn other segments of the optical disc, so that subsequent data can be written onto the optical film. In addition, in the second embodiment described above, the optical disc used in the method is write-once. CD-ROM, CD-RW, CD-ROM (DVD 7), Repeatable Digital Audio CD (DVD_RW, DVD+RW), and random kinetic energy Memory digital video disc (DVD_RAM), high resolution digital video disc (HD-DVD), Blu-ray disc (Blue_ray disc). In summary, the power control method based on the time-based error feedback of the present invention is comparatively first. /The second write power is detected in different segments of the burned disc The size of the first/second time base error signal is adjusted to the reference recording power obtained in the optimized power correction step of the optical disc to avoid the optimal burning power during the optical disc burning process. The change caused the poor quality of the burning of the optical disc, the inability to complete the storage of the data, the difficulty in reading the data, or the failure of the reading. The above is only an example and not a limitation. Anything that does not leave 12 200816190 The spirit and scope of the invention, and equivalent modifications or alterations thereof, should be included in the scope of the appended patent application. [Simplified illustration of the drawings], Figure 1 is one of the conventional optical disc recorders. 2 is a flow chart of a power control method according to a time base error feedback according to a preferred embodiment of the present invention; and FIG. 3 is a timing basis error feedback according to another preferred embodiment of the present invention. Flowchart of one of the power control methods. Symbol description: 13