TW200912909A - Method of recording over defects - Google Patents

Method of recording over defects Download PDF

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Publication number
TW200912909A
TW200912909A TW97117352A TW97117352A TW200912909A TW 200912909 A TW200912909 A TW 200912909A TW 97117352 A TW97117352 A TW 97117352A TW 97117352 A TW97117352 A TW 97117352A TW 200912909 A TW200912909 A TW 200912909A
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TW
Taiwan
Prior art keywords
record carrier
defect
recording
optical record
data
Prior art date
Application number
TW97117352A
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Chinese (zh)
Inventor
Yu Zhou
Tek Seow Loi
Original Assignee
Koninkl Philips Electronics Nv
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Publication of TW200912909A publication Critical patent/TW200912909A/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • G11B7/00375—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs arrangements for detection of physical defects, e.g. of recording layer
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • G11B7/0053—Reproducing non-user data, e.g. wobbled address, prepits, BCA
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0945—Methods for initialising servos, start-up sequences
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

A method comprising controlling recording of data on an optical record carrier based on the detection of at least one defect on the optical record carrier at a moment in time before actual recording of the data on the optical record carrier is disclosed. The method can perform an early detection of defects during recording and take suitable corrective measures to handle the defects. This can reduce the recording problems such as loss of data, unable to read recorded information. The technique is useful for all optical disc recording devices such as CD, DVD, HD-DVD and Blu-ray disc recorders.

Description

200912909 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種在一光碟上記錄資料之方法，更特定 5之係存在於該光碟上的缺陷上記錄該資料。 【先前技術】 WO 2003044794揭示一種在—可重寫之光學記錄媒體上 己錄 > 料之方法。忒方法藉由讀取已記錄資料之至少一部200912909 IX. Description of the Invention: [Technical Field] The present invention relates to a method of recording data on a compact disc, and more specifically recording the data on a defect existing on the optical disc. [Prior Art] WO 2003044794 discloses a method of recording > on a rewritable optical recording medium.忒 method by reading at least one of the recorded data

刀來掃描該光學記錄媒體以找出缺陷，並且基於該等缺陷 而調適記錄策略。 具有一種偵測缺陷而不寫入並且基於偵測到的缺陷而調 適該記錄策略之記錄方法係有利。具有一種摘測缺陷而不 寫入並且基於制到的缺陷而調適該記錄策略之光學驅動 器亦係有利。 【發明内容】 :發明揭示一種方法，其包含在將該資料實際記錄在今 二記錄載體上前的一時刻基於在該光學記錄載體上的至 i。固缺陷之僧測而控制在—光學記錄栽體上的資料之記 ’其係 的一日夺 而控制 本發明揭示-種光學驅動器，其包含一控制單_ 配置以在將該資料實際記錄在該光學 ：： 刻基於在該光皋$料普胁l a Μ體上月,j ,“ 5己錄载體上的至少-個缺陷之偵測 在一光學記錄载體上的資料之記錄。 ’、 此外，該方法可利用—電腦程式來實施。 【實施方式】 131383.doc 200912909 f...A knife is used to scan the optical recording medium to find defects and to adapt the recording strategy based on the defects. It is advantageous to have a recording method that detects defects without writing and adapts the recording strategy based on the detected defects. It is also advantageous to have an optical drive that picks up defects without writing and adapts the recording strategy based on the defects that are made. SUMMARY OF THE INVENTION The invention discloses a method comprising based on i to the optical record carrier at a point prior to the actual recording of the material on the present record carrier. The control of the solid defect is controlled by the recording of the data on the optical recording carrier. The control of the present invention discloses an optical drive comprising a control unit _ configuration for actually recording the data in the The optics:: based on the recording of at least one defect on the recorded carrier on the optical record carrier, based on the last month of the pupil, j. In addition, the method can be implemented by using a computer program. [Embodiment] 131383.doc 200912909 f...

I 參考圖i，該光學記錄載體10(參見圖1}係由一轉轴焉達 52加以以肖速度（⑽)控制《线性速度（CLV)控制。 -光學拾取單元54藉由使用發射自一雷射二極體 (於-記錄功率值)將資料記錄在該光學記錄載體1〇上。备 已記錄該資料時’將其供應給—編碼器單元58，並將藉由 忒編碼器單元58所編碼之資料供應給一雷射二極體驅動單 元％。該雷射二極體驅動單元56基於已編碼⑽而產生一 驅動信號’並將該驅動信號供應給該光學拾取單元Μ之雷 射二極體”自一控制單元54的一控制信號供應 Ή雷射二極體驅動單元56,以便藉由該控制信號決定該 ^錄萊略及記錄功率。_，當從該光學記錄載體1〇讀取 資料時’該光學拾取單元54之雷射二極體發射—讀取功率 (讀取功率<記錄功率)之雷射光，而且接收反射光。將該 接收之反射光轉換成-電氣信號，而且獲得—讀取灯信 號。將該讀取RF信號供應給—RF信號處理單元5〇。 該RF信號處理單元5〇包括—等化器、—二進制化單元、 一鎖相迴路（PLL)單元，而且將該讀取灯信號二進制化、 產生一同步時脈，並將此等信號供應給-解瑪器單元57。 -亥解碼Θ早7057基於此等供應信號而解碼資料，並且輸出 已解碼資料作為讀取資料。 該光學驅動器500亦包含一電路(用於資料讀出），其藉 由分別產生-循軌誤差信號或一聚焦誤差信號及在該光； :己錄載體10上形成的一擺動信號而控制該聚焦词服或循軌 何服(例如用於位址解調變或用於控制旋轉數目卜該等伺 131383.doc 200912909 服控制結構與習知驅動系統中的一樣，因而不詳細加以說 明。 圖1中所示之構造僅解說與該光學驅動器5〇〇之一般操作 相關之部分。省略用於控制該光學拾取單元、該轉軸馬 達，、該滑動馬達及該等控制電路之飼服電路之說明及詳細 解釋’因為其係以類似習知驅動系統的一方式所建構。 在市場上有大量光學記錄載體（例如CD、DVD、HD_ D»VD、藍光碟片）僅最低限度地符合由該等標準（例如DVD =、藍光碟片標準）所規定之規格，或根本不符合由該 等枯準所規定之規格。這可能產生碟片缺陷 體缺陷、一里赴 二 一。▲々 …點、一白點、一指紋和一刮痕，如圖2所 '•亥等缺陷可能造成問題，例如在記錄後無法讀取該碟 片或該記錄碟片上的眘杻、主 η 片上的貝枓退失。此外，該等缺陷可能在誤 ，號中引入突然的高振幅尖峰’其容易操控該雷射光束 脫離Π亥磁軌。此可能影響該記錄效能，而且導致記錄失 敗0 _圖3與圖3b，chl顯示該正規化鏡信號MIRN， C h 2 矣，、頁不· fp) *=6 ^ 7-Λ- nt 、"、5旎，eh3顯示該擺動信號，以及Ch4顯 不來焦誤差彳古♦ 碑片…“虎。由此可見’指紋之碟片缺陷通常在該 唯乃上具有動；| 積，而且對於該記錄品質之影塑 較於其他碟片缺陷來得大。 …如相 本發明揭示一福太、土 廿a人 光學記錄載體上=將該資料實際記錄在該 少一::的-時刻基於在該光學記錄載體上的至 之偵測而控制在一光學記錄载體上的資料之記 I31383.doc 200912909 錄。 在將該光學記錄載體***至該光學驅動器用於記錄資料 的同時，一缺陷偵測功能便會開啟，並且將該促動器移動 至下一個記錄區域。該缺陷偵測功能檢查該光學記錄載體 是否有各種類型之缺陷並且偵測該等缺陷。一旦债測到該 缺陷’該光學驅動器可採取適當措施來處置缺陷，接著據 此調適記錄。此可改進該整體記錄品質。該方法不利用該 已§己錄 料來号找S亥等缺陷。因此’該方法在可以偵測缺 陷之存在前不需要該光學驅動器來記錄該資料。該揭示之 方法係在將該資料記錄於該光學記錄载體上的同時，侦測 S亥專缺陷。 在一具體實施例中，該方法包括使用一測量鏡信號與一 測量擺動信號在該光學記錄載體上偵測至少一個缺陷。 該鏡信號（亦即中心二極體信號）之振幅（其代表該光學記 錄載體反射率）係連同該擺動信號一起監視以偵測缺陷之 發生。在此使用之鏡信號係該正規化鏡信號。例如，在一 習知四象限光偵測器（包括具有個別之光偵測器的四個象 限八、8、（：、〇，來自雷射束的該反射光照射於其上）中， 一正規化鏡信號可產生作為來自所有該等光偵測器之該等 信號的總和，並且可用作該反射雷射光之一測量。當該光 子。己錄載體上有缺陷時，該正規化鏡信號位準改變。此等 改變可用來偵測該等缺陷。 一磁執之槽紋（於—光學記錄載體中）係以一波狀或波紋 圖案之形式提供。—槽紋之波紋®案可經相以按一擺動 131383.doc 200912909 頻率產生-擺動k號。該㈣到的擺動信號可用作磁轨位 置資訊，並且亦可用作-產生_時序信號之基本信號。存 在於S亥光學S己錄冑體上的該等缺陷可能在可用來偵測該等 缺陷的該擺動信號中造成干擾。 在另一具體實施例中，該方法包括： -決定該測量鏡信號是否位在預定義下限鏡信號臨限值 與預定義上限鏡信號臨限值之間； -若是如此，則決定在該測量擺動信號中之干擾是否高 於-預定義之擺動信號臨限值中該干擾係獲自該測量 擺動信號之一最大峰值與一最小峰值間之一差異；以及 -若是如此，則宣告一指紋缺陷存在於該光學記錄載體 上。 大體上，該指紋缺陷區域相較於因黑點、刮痕、染料媒 體等其他缺陷造成之區域來得大。若在該指紋區域中跳過 該資料之記錄而且該資料將重新定位於一其他無缺陷區 域，則該重新定位之資料需要大空間。另一方面，若該資 料之。己錄照常執行而不辨別該指紋缺陷區域，則可能因記 錄品質不佳而影響在該指紋缺陷區域中已記錄資料之讀 回，並且可能導致無法校正之誤差。因此辨別該指紋缺陷 可協助該驅動器採取必要動作以在該指紋區域上記錄（例 如增加該記錄1力率及記錄該資料在該指紋缺陷區域上而不 重新定位該資料）。 在另一具體實施例中，該方法包括： 決疋忒測量鏡信號是否位在該預定義下限鏡信號臨限 131383.doc -10- 200912909 值之下； -若是如此，則決定該測量擺動信號之該干擾是否位在 該預定義之擺動信號臨限值之上；以及 •若是如此’則宣告一黑點、一白點、—刮痕、—氣泡 及一染料缺陷之至少一者存在於該光學記錄載體上。 該等缺陷（例如黑點、白點、氣泡或染料缺陷）係記錄嗜 資料必須避開之缺陷，因其會導致記錄品質不佳（或可= 導致不可恢復之誤差），而且從此等缺陷區域讀取該已記 錄資料係困難。當債測到該等缺陷日夺，該光學驅動器具有 該必要資訊以在該等缺陷區域中跳過記錄該資料。此外， 該資料可重新定位於一其他無缺陷區域，而且可繼續記 錄。 現參考圖4a與圖4b，該水平軸代表時間（以毫秒為單 位），該垂直軸代表在分別具有一指紋（參見圖如）與一黑點 (參見圖4b)之一光學記錄載體上測量正規化鏡信號之振 幅。於圖仏與圖4b中可見，在該指紋上該正規化鏡信號之 ::準之降幅相較於在黑點、刮痕、染料缺陷等上的降幅小 仟夕4預疋義上限鏡信號臨限值與預定義下限鏡信號臨 限值可考量該正規化鏡信號位準之變動而設定。 現參考圖4c與圖4d ’該水平軸代表時間(以毫秒為單 )、X垂直軸代表在一分別具有—指紋與—黑點之光學 ’載體上之測里擺動彳&號之振幅。當該光學記錄載體上 沒有缺陷時，該擺動干擾（w〇bble_dis=max_peak- n_peak) 4乎為零。當有_缺陷時，該擺動干擾可能增 I31383.doc 200912909 加，如圖4c與圖4d所示。因此，該擺動信號臨限值可以該 wobble_dis>=disturbance_limit指示發生缺陷之一方式設 定。 在更進一步的具體實施例中，決定至少一個缺陷在該光 學記錄載體上係在閒置時間期間完成。該閒置時間係一介 於開始填充記錄資料緩衝區與開始將該資料記錄在該光學 。己錄載體上間之時段。在將該資料即時記錄至該光學記錄 載體期間，該光學驅動器通常將以—較視訊被編碼成 mpeg資料更高之速度（24倍速或更高）進行記錄。此意謂 在貫際將4資料§己錄至該光學記錄載體上之前，該資料將 遞、a地填充至s亥光學驅動器之記錄緩衝區，直到其達到一 特定臨限為止。在將該資料實際記錄至該光學記錄載體上 以及等待該記錄緩衝區填滿之間，該光學驅動機將為閒 置。此閒置時間係有效用於偵測該光學記錄載體上的缺 陷。換言之’該揭示之方法考慮即時直接記錄至該光學記 錄載體會因資料編碼延時而產生閒置時間之特徵。再者， 此早期偵測缺陷可執行達取決於該記錄資料緩衝區大小與 哥見時間之特定時段。此外，該方法可㈣缺陷而不在該 光學記錄載體上寫入。 在更進一步的具體實施例中，該資料係藉由起始—取決 於"亥偵測到的缺陷之一類型之缺陷處置機制而記錄在該光 :δ己錄載體上。㉟等缺陷可能以許多方式影響該記錄品 二且而要以不同方式加以處置。換言之，各缺陷（例如 木料缺、刮痕、氣泡及指紋）皆需一種不同的校正機制 131383.doc -12- 200912909 來克服該缺陷並且繼續記錄。因 此藉由起始一可基於該 缺陷之類型採取適當措施之缺 ' i田指施乞缺陷處置機制來記錄資料可改 進該記錄品質。換言之，該揭 — 句丁心万法可精由進行早期缺 偵測與§己錄校正（亦即針對可枯，下十# V 丨訂耵_Γ杈正之偵測到的缺陷）來改 進記錄穩健性。Referring to Figure i, the optical record carrier 10 (see Fig. 1) is controlled by a rotational speed (52) to control linear velocity (CLV) control by a rotational speed (10). - The optical pickup unit 54 is transmitted by using one The laser diode (on-recording power value) records the data on the optical record carrier 1 。. When the data has been recorded, it is supplied to the encoder unit 58 and will be supplied by the 忒 encoder unit 58. The encoded data is supplied to a laser diode driving unit %. The laser diode driving unit 56 generates a driving signal 'based on the encoded (10) and supplies the driving signal to the laser of the optical pickup unit The diode is supplied from a control signal of a control unit 54 to the laser diode driving unit 56 to determine the recording and recording power by the control signal. _, when from the optical record carrier 1 When the data is read, the laser diode of the optical pickup unit 54 emits laser light of the read power (read power & recording power), and receives the reflected light. The received reflected light is converted into an electrical signal. And get - read the light signal. Will The read RF signal is supplied to the RF signal processing unit 5. The RF signal processing unit 5 includes an equalizer, a binarization unit, a phase locked loop (PLL) unit, and binarizes the read lamp signal And generating a synchronization clock, and supplying the signals to the - damper unit 57. The decoding unit decodes the data based on the supply signals, and outputs the decoded data as the read data. The optical drive 500 Also included is a circuit (for data reading) that controls the focused word or by generating a tracking error signal or a focus error signal and a wobble signal formed on the light carrier 10 The tracking device (for example, for address demodulation or for controlling the number of rotations), etc., is the same as in the conventional drive system, and thus will not be described in detail. The configuration only illustrates the portion related to the general operation of the optical drive 5. The description of the feeding circuit for controlling the optical pickup unit, the spindle motor, the sliding motor, and the control circuits is omitted. Explicitly and in detail explain 'because it is constructed in a manner similar to conventional drive systems. There are a large number of optical record carriers (such as CD, DVD, HD_D»VD, Blu-ray discs) on the market that are only minimally compatible with this. The specifications specified by standards (such as DVD =, Blu-ray disc standard), or at all do not meet the specifications specified by the standard. This may result in defects in the disc defect, one to go to the second one. ▲ 々 ... point , a white dot, a fingerprint and a scratch, as shown in Figure 2, such as 'Hai' may cause problems, such as the disc cannot be read after recording or the disc on the disc, the shell on the main η In addition, these defects may introduce a sudden high-amplitude spike in the error, which easily manipulates the laser beam away from the magnetic track. This may affect the performance of the record, and cause the record to fail 0 _ Figure 3 and Figure 3b, chl shows the normalized mirror signal MIRN, C h 2 矣, page not · fp) *=6 ^ 7-Λ- nt , &quot ;, 5旎, eh3 shows the wobble signal, and Ch4 shows no focus error 彳 ♦ 碑... "Tiger. It can be seen that the fingerprint of the fingerprint usually has motion on the only one; | The recording quality of the recording quality is larger than that of other disc defects. As shown in the present invention, a Futai, a tuna a person optical record carrier = the actual recording of the data in the one less:: The information on the optical record carrier that is detected and controlled on an optical record carrier is recorded in I31383.doc 200912909. While the optical record carrier is inserted into the optical drive for recording data, a defect detection is performed. The function is turned on and the actuator is moved to the next recording area. The defect detection function checks whether the optical record carrier has various types of defects and detects the defects. Once the defect is detected, the optical Drive can be adapted When measures are taken to dispose of the defect, then the record is adapted accordingly. This improves the overall recording quality. The method does not use the § recorded material to find defects such as S Hai. Therefore, the method can detect defects before they exist. The optical drive is not required to record the data. The method of the disclosure detects the S-specific defect while recording the data on the optical record carrier. In a specific embodiment, the method includes using a measurement The mirror signal and a measurement wobble signal detect at least one defect on the optical record carrier. The amplitude of the mirror signal (ie, the center diode signal), which represents the reflectivity of the optical record carrier, is monitored along with the wobble signal To detect the occurrence of defects. The mirror signal used here is the normalized mirror signal. For example, in a conventional four-quadrant light detector (including four quadrants with individual photodetectors, eight, eight, ( :, 〇, the reflected light from the laser beam is incident thereon), a normalized mirror signal can be generated as the sum of the signals from all of the photodetectors, and Measuring the reflected laser light. When the photon has a defect on the recorded carrier, the normalized mirror signal level changes. These changes can be used to detect the defects. The optical record carrier is provided in the form of a wavy or corrugated pattern. The fluted corrugation® case can be generated by the phase to oscillate at a frequency of 131383.doc 200912909 - the oscillating k number. The (four) oscillating signal is available. As the track position information, and can also be used as the basic signal for generating the - timing signal. The defects existing on the S-ray optical S-recorded body may be caused in the wobble signal that can be used to detect the defects. In another embodiment, the method comprises: - determining whether the measurement mirror signal is between a predefined lower limit mirror signal threshold and a predefined upper limit mirror signal threshold; - if so, determining Whether the interference in the measured wobble signal is higher than - the pre-defined wobble signal threshold is obtained from a difference between a maximum peak value and a minimum peak value of one of the measured wobble signals; and - if so, an announcement is made Fingerprint defects are present on the optical record carrier. In general, the fingerprint defect area is larger than the area caused by other defects such as black spots, scratches, dye media, and the like. If the record of the material is skipped in the fingerprint area and the data is relocated to a other non-defective area, the relocated data requires a large amount of space. On the other hand, if the information is. If the recorded defect is often performed without discriminating the fingerprint defect area, the read back of the recorded data in the fingerprint defect area may be affected due to poor recording quality, and an error that cannot be corrected may be caused. Thus identifying the fingerprint defect can assist the drive in taking the necessary action to record on the fingerprint area (e.g., increasing the record 1 force rate and recording the data on the fingerprint defect area without repositioning the data). In another embodiment, the method includes: determining whether the measurement mirror signal is below the predefined lower limit mirror signal threshold 131383.doc -10- 200912909; - if so, determining the measurement swing signal Whether the interference is above the predefined threshold of the wobble signal; and • if so, at least one of a black dot, a white spot, a scratch, a bubble, and a dye defect is present in the optical On the record carrier. Such defects (such as black spots, white spots, bubbles or dye defects) are defects that must be avoided by the data, as they can result in poor recording quality (or can cause irreversible errors), and from such defective areas It is difficult to read the recorded data. When the debt detects such defects, the optical drive has the necessary information to skip recording the data in the defective areas. In addition, the material can be relocated to a different defect-free area and can continue to be recorded. Referring now to Figures 4a and 4b, the horizontal axis represents time (in milliseconds), which is measured on an optical record carrier having a fingerprint (see figure) and a black dot (see Figure 4b), respectively. The amplitude of the normalized mirror signal. As can be seen in FIG. 4b and FIG. 4b, the normalized mirror signal on the fingerprint is: the decrease in the amplitude is smaller than that in the black dot, the scratch, the dye defect, etc. The threshold value and the predefined lower limit mirror signal threshold can be set by considering the variation of the normalized mirror signal level. Referring now to Figures 4c and 4d', the horizontal axis represents time (in milliseconds) and the X vertical axis represents the amplitude of the oscillating 彳 & number on an optical 'carrier with a fingerprint and a black dot, respectively. When there is no defect on the optical record carrier, the wobble interference (w〇bble_dis=max_peak-n_peak) is almost zero. When there is a _ defect, the wobble interference may increase by I31383.doc 200912909, as shown in Figure 4c and Figure 4d. Therefore, the wobble signal threshold can be set in such a manner that the wobble_dis >=disturbance_limit indicates that a defect has occurred. In still further embodiments, determining that at least one defect is completed during the idle time on the optical record carrier. The idle time is based on beginning to fill the record data buffer and begin recording the data in the optical. The time period between the recorded carriers. During the instant recording of the data to the optical record carrier, the optical drive will typically record at a higher speed (24x speed or higher) than the video encoded into the mpeg data. This means that the data will be filled and filled into the recording buffer of the optical drive until it reaches a certain threshold before the data is continuously recorded on the optical record carrier. The optical drive will be idle between the actual recording of the material onto the optical record carrier and waiting for the recording buffer to fill. This idle time is effectively used to detect defects on the optical record carrier. In other words, the method of the disclosure considers that direct recording directly to the optical record carrier can be characterized by idle time due to data encoding delays. Furthermore, the early detection of the defect executable depends on the size of the recorded data buffer and the specific time period of the time of the visit. Moreover, the method can (4) be defective without writing on the optical record carrier. In still further embodiments, the data is recorded on the light: delta recorded carrier by a defect handling mechanism of the type of defect detected by "Hai. Defects such as 35 may affect the record in many ways and must be disposed of in different ways. In other words, various defects (such as wood shortages, scratches, bubbles, and fingerprints) require a different correction mechanism 131383.doc -12- 200912909 to overcome this defect and continue recording. Therefore, the quality of the record can be improved by recording a data by initiating a defect based on the type of the defect. In other words, the slogan-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Robustness.

在-具體實施例中，該缺陷處置機制在實際記錄該資料 期間基於該指紋缺陷之侧到的位置而調整記錄參數。當 债測到該指紋缺陷時，該光學驅動器可增加特定百分比之 寫入㈣，例如在有指'紋的該缺陷區域上寫入的最佳功率 以此方式，可杈正指紋缺陷。功率之該增加可取 決於該光學記錄載體類型而改變，並且可根據該光學記錄 載體類型或媒體ID儲存在該光學驅動器eepr〇m中。 在另-具體實施例中，該缺陷處置機制基於該黑點、該 ”‘ °亥到痕、5亥氣泡或該染料缺陷之至少一個之彳貞測到 的位置，在實際記錄該資料期間跳過偵測到的缺陷區域。 一旦偵測到該缺陷，該光學驅動器可產生一缺陷旗標，並 且將5亥缺陷旗標設定為高直到離開該缺陷區域為止。基於 該缺陷旗標’該光學驅動器可在該缺陷開始和結束之處標 不旗私對應之實體區塊位址。該光學記錄載體之此缺陷區 域可被記憶並且可由該光學驅動器之缺陷管理實施方案加 以處置。此早期缺陷偵測可在每次記錄期間進行。該揭示 之方法偵測缺陷並且基於偵測到的缺陷之類型調適在該缺 陷上該資料之記錄。因此，該方法改進記錄效率。此外， 該揭示之方法基於該正規化鏡信號及該擺動信號之變化而 131383.doc -13- 200912909 侦測缺陷’因此該缺陷㈣係準確。此外，可調適其他之 缺陷：理方法，例如丨)預分配缺陷資料儲存區並且將受影 a的貝料移動至該預分配區域，以及⑴使用位址變換跳過 缺陷區域。 在更進-步的具體實施例中，該方法係在一空白光學記 .彔載體上執行。此節省記錄時間，因該缺陷债測可在將該 資料記錄在該缺陷區域上前進行。此外，若該缺陷摘測係 在記錄後進行，則有可能增加該缺陷區域之機會。此係因 為在°亥缺區域（記錄期間）之該扭曲的伺服誤差信號可操 縱a促動器至沒有任何缺陷之該相鄰磁軌，導致毁壞該等 相鄰磁軌中的資料。此暗示在有缺陷（例如黑點）之該缺陷 區域中的記錄可能導致該等黑點周圍之資料毁壞。因此， 在兄錄後偵測該等缺陷時，該實際缺陷區域可能增加。該 揭示之方法藉由在該空白光學記錄載體上記錄前進行早期 缺陷偵測而避免此發生。 «亥光學驅動斋500(參見圖1)可加以調適以如該等具體實 施例所揭示執行該方法。為此原因，該光學驅動器包含一 控制單元59，其係配置以在將該資料實際記錄在該光學記 錄載體上前的一時刻基於在該光學記錄載體上的至少一個 缺陷之偵測而控制在一光學記錄載體上的資料之記錄。 在—具體實施例中，該光學驅動器5〇〇(參見圖”包含一 缺陷偵測單元4〇〇，其係配置以使用一測量鏡信號與一測 量擺動信號來偵測在該光學記錄載體上之至少一個缺陷。 現參考圖5，該缺陷偵測單元4〇〇接收該測量正規化鏡信 131383.doc •14- 200912909 號MIRn與該測量擺動信號，並且處理其以發現在該光學 記錄載體上之該等缺陷。用於處理該測量正規化鏡信號 MIRn之該缺陷偵測單元包含： i) 一類比轉數位轉換器402 ii) 一高通遽波器404 iii) 一平均FIR濾波器406 iv) —比較器408及 v) —邏輯AND電路410 在操作中，該類比轉數位轉換器402接收該測量MIRn信 號並且輸出一正規化數位鏡信號，其通過一高通濾波器 404以及一平均濾波器4〇6以濾除DC分量並且獲得 MIRN_out信號。該平均濾波器406可係反因果（anti-Causal) 並且可具有零相位延遲。該比較器408接收作為輸入之該 MIRN 一 out信號並且比較該MIRN_out信號與該預定義之鏡 信號臨限值。該比較器檢查該MIRN_out信號是否位在該 預定義上限鏡信號臨限值與預定義下限鏡信號臨限值之 間’若是如此’則將至該邏輯AND電路410之第一輸入FP 設定為1。若該擺動信號干擾係高於一預定義之擺動信號 臨限值，則至該邏輯AND電路410之第二輸入DD(被該比 較器45 0)設定為1。基於第一輸入FP與第二輸入DD之狀 態’該邏輯AND電路410偵測該指紋缺陷之存在，並且將 FP旗標設定為1。該缺陷偵測之一範例性虛擬程式碼表示 法係如下給定： 若（鏡信號上臨限<MIRN_out<鏡信號下臨限） 131383.doc 200912909 及 右（擺動干擾 >預定義之擺動信號臨限值） 則宣告存在一指紋缺陷。 再者，用於處理該測量擺動信號之該缺陷偵測單元包 含： i) 一類比轉數位轉換器442 Π) —高通濾波器444In a particular embodiment, the defect handling mechanism adjusts the recording parameters based on the side of the fingerprint defect during the actual recording of the data. When the debt detects the fingerprint defect, the optical drive can increase a certain percentage of writes (4), such as the optimum power written on the defective area with the fingerprint, in such a way that the fingerprint defect can be corrected. This increase in power may vary depending on the type of optical record carrier and may be stored in the optical drive eepr〇m depending on the optical record carrier type or media ID. In another embodiment, the defect handling mechanism is based on the detected position of the black dot, the "°H to the mark, the 5H bubble, or the dye defect, and jumps during the actual recording of the data. The detected defect area. Once the defect is detected, the optical driver can generate a defect flag and set the 5H defect flag high until leaving the defect area. Based on the defect flag The driver may mark the physical block address corresponding to the flag at the beginning and end of the defect. This defective area of the optical record carrier can be memorized and can be disposed of by the defect management implementation of the optical drive. The measurement can be performed during each recording. The disclosed method detects the defect and adapts the record of the data on the defect based on the type of the detected defect. Therefore, the method improves the recording efficiency. Further, the method of the disclosure is based on The normalized mirror signal and the change of the wobble signal are 131383.doc -13- 200912909 detecting the defect 'so the defect (4) is accurate. In addition, the adjustable Other drawbacks: rational methods, such as 丨) pre-allocating the defect data storage area and moving the bait of the affected a to the pre-allocated area, and (1) skipping the defective area using the address translation. In the example, the method is performed on a blank optical recording carrier. This saves recording time, since the defect measurement can be performed before the data is recorded on the defective area. After recording, it is possible to increase the chance of the defective area. This is because the twisted servo error signal can manipulate the a actuator to the adjacent track without any defects in the missing area (recording period). Resulting in the destruction of data in such adjacent tracks. This implies that records in the defective area of a defect (such as a black dot) may cause damage to the data around the black points. Therefore, detecting such after the duo In the case of a defect, the actual defect area may increase. The method of the disclosure avoids this by performing early defect detection on the blank optical record carrier. «海光驱动斋500(参Figure 1) can be adapted to perform the method as disclosed in the specific embodiments. For this reason, the optical drive includes a control unit 59 configured to actually record the material on the optical record carrier. Recording of data on an optical record carrier is controlled at a time based on detection of at least one defect on the optical record carrier. In a particular embodiment, the optical drive 5〇〇 (see figure) includes a defect detection The measuring unit 4 is configured to detect at least one defect on the optical record carrier by using a measuring mirror signal and a measuring swing signal. Referring now to FIG. 5, the defect detecting unit 4 receives the measurement. The normalized mirror letter 131383.doc • 14-200912909 MIRn and the measurement wobble signal are processed and found to find such defects on the optical record carrier. The defect detecting unit for processing the measured normalized mirror signal MIRn comprises: i) an analog-to-digital converter 402 ii) a high-pass chopper 404 iii) an average FIR filter 406 iv) - a comparator 408 and v) - Logic AND Circuit 410 In operation, the analog to digital converter 402 receives the measured MIRn signal and outputs a normalized digital mirror signal that is filtered through a high pass filter 404 and an averaging filter 4 〇 6 The DC component is obtained and the MIRN_out signal is obtained. The averaging filter 406 can be anti-causal and can have a zero phase delay. The comparator 408 receives the MIRN-out signal as an input and compares the MIRN_out signal with the predefined mirror signal threshold. The comparator checks whether the MIRN_out signal is between the predefined upper limit mirror signal threshold and the predefined lower mirror signal threshold. If so, the first input FP to the logical AND circuit 410 is set to 1 . If the wobble signal interference is above a predefined wobble signal threshold, the second input DD to the logical AND circuit 410 (by the comparator 45 0) is set to one. The logical AND circuit 410 detects the presence of the fingerprint defect based on the state of the first input FP and the second input DD, and sets the FP flag to one. An exemplary virtual code representation of the defect detection is given as follows: if (the mirror signal is on the threshold <MIRN_out<the mirror signal is below the threshold) 131383.doc 200912909 and right (wobble interference > predefined swing signal) The threshold) declares a fingerprint defect. Furthermore, the defect detecting unit for processing the measured wobble signal comprises: i) an analog-to-digital converter 442 Π) - a high pass filter 444

Hi) —平均FIR濾波器446 iv) —數位斜率偵測器448 v) 一比較器450及 vi) —邏輯AND電路452 在操作中，該類比轉數位轉換器442接收該測量擺動信 號並且輸出一數位擺動信號，其接著通過一高通濾波器 444以及平均濾波器446，以過濾雜訊與擺動信號之高頻 分量（擺動調變頻率=N* 818KHz，其中]^係該光學記錄载 體之轉速。相較於擺動頻率，該缺陷在該擺動信號中引起 之干擾具有至少低12倍之頻率。）該平均濾波器446之輸出 係由該數位斜率偵測器448接收以產生一 w〇bble—〇加信 號。該比較器45〇在輸入該wobble一out信號時加以接收並 且比較該w〇bble_out信號與該預定義之擺動信號臨限值。 當該斜率係高於該預定義之擺動信號臨限值時，至該邏輯 AND電路452之該第一輸出便設定為ι(指示該擺動信號 中出現干擾）。 若該MlRN_out信號係小於該鏡信號下臨限位準，則至 131383.doc •16· 200912909 邏輯AND電路452之該第二輸入BD便（被該比較器408)設定 為1。基於DD與BD之狀態，該邏輯AND電路452偵測一黑 點、一白點、一刮痕、一氣泡或一染料缺陷之存在，並且 將該BD旗標設定為1。該缺陷偵測之一範例性虛擬程式碼 表示法係如下給定： 若（MIRN—out〈鏡信號下臨限） 及 若（擺動干擾 &gt;預定義之擺動信號臨限值） rHi) - Average FIR Filter 446 iv) - Digital Slope Detector 448 v) A Comparator 450 and vi) - Logic AND Circuit 452 In operation, the analog to digital converter 442 receives the measurement wobble signal and outputs a The digital wobble signal is then passed through a high pass filter 444 and an averaging filter 446 to filter the high frequency components of the noise and wobble signals (oscillation frequency = N* 818 KHz, where) the speed of the optical record carrier The defect causing the interference in the wobble signal has a frequency that is at least 12 times lower than the wobble frequency. The output of the averaging filter 446 is received by the digital slope detector 448 to generate a w〇bble— Add a signal. The comparator 45 receives and compares the w〇bble_out signal with the predefined wobble signal threshold when the wobble-out signal is input. When the slope is above the predefined wobble signal threshold, the first output to the logic AND circuit 452 is set to ι (indicating interference in the wobble signal). If the MlRN_out signal is less than the threshold level of the mirror signal, then the second input BD of the logical AND circuit 452 to 131383.doc •16·200912909 is set to 1 by the comparator 408. Based on the state of DD and BD, the logical AND circuit 452 detects the presence of a black dot, a white dot, a scratch, a bubble or a dye defect, and sets the BD flag to one. An exemplary virtual code representation of the defect detection is given as follows: if (MIRN_out <mirror signal threshold) and if (wobble interference &gt; predefined swing signal threshold) r

則宣告存在一缺陷（例如染料缺陷' 一黑點、一刮痕和 一氣泡）。 一如该等具體實施例所揭示包含該光學驅動器之記錄器 可在δ己錄期間執行一早期偵測缺陷，並且在記錄期間採取 適富之板正措施來處置缺陷。此亦可減少記錄問題，例如 資料遺失、無法讀取已記錄資訊。 雖然藉由使用範例性光碟之具體實施例解釋本發明，但 本發明適用於所有類型之光學記錄載體（CD、dvd、hd_ DVD、藍光碟片）。其不限於兩層單面碟片（亦即雙層碟 片），亦不限於兩層雙面碟片(亦即雙層雙面碟片）。熟習此 項技術人士可在軟體或在硬體或同時在軟體和硬體實施該 方法之所說明之具體實施例。從圖式、揭示内容及隨附申 請專利H㈣閱讀，實現本文所聲明巾請專利範圍之熟諸 此項技術者將可瞭解及實現所揭示具體實施例的其他變 動3 G 3的使用並未排除在中請專利範圍或說明中 所列這些之外的元件存在。在—元件之前使用不定冠詞 I31383.doc 200912909 ”一&quot;或”一個'，並未排除可能存在有複數個該等元 々 圖式及說明只是解說性而不是限制本發明。 4等 【圖式簡單說明】 圖1顯示一範例性光學驅動器； 圖2顯示於一範例性光學記錄載體上的範例缺陷； α = 3a與圖3b示意性顯示_具有指紋與具有局部染料媒體 或黑點之乾例性空白光學記錄載體的信號特徵·， 圖4a至圖4d示意性顯示—具有一指紋與—黑點缺陷之空 白光予δ己錄載體的正規化鏡信號與擺動信號之變化；以及 圖5顯不根據本發明之一具體實施例的缺陷偵測之示意 方塊圖。 【主要元件符號說明】 10 光學記錄載體 50 RF信號處理單元 52 轉轴馬達 54 光學拾取單元 56 雷射二極體驅動 57 解碼器單元 58 編碼器單元 59 控制單元 40〇 缺陷彳貞測單元 131383.doc 200912909 402 類比轉數位轉換器 404 尚通濾、波器 406 平均FIR濾波器 408 比較器 410 邏輯AND電路 442 類比轉數位轉換器 444 局通滤波器 446 平均FIR濾波器 448 數位斜率偵測器 450 比較器 452 邏輯AND電路 500 光學驅動器Then there is a defect (such as a dye defect 'a black spot, a scratch and a bubble). A recorder incorporating the optical drive as disclosed in the specific embodiments can perform an early detection of defects during delta recording and take appropriate board positive measures during recording to handle defects. This also reduces recording problems, such as missing data and the inability to read recorded information. Although the invention is explained by way of a specific embodiment using an exemplary optical disc, the invention is applicable to all types of optical record carriers (CD, dvd, hd_DVD, Blu-ray disc). It is not limited to two-layer single-sided discs (i.e., double-layer discs), and is not limited to two-layer double-sided discs (i.e., double-layer double-sided discs). A specific embodiment of the method can be practiced by a person skilled in the art, either in software or in hardware or in both software and hardware. The use of the drawings, the disclosure, and the accompanying patent application H. Components other than those listed in the patent scope or description are present. The use of the indefinite article I31383.doc 200912909 "a" or "a" does not exclude the existence of a plurality of such elements. 4, etc. [Simplified illustration of the drawings] Fig. 1 shows an exemplary optical actuator; Fig. 2 shows exemplary defects on an exemplary optical record carrier; α = 3a and Fig. 3b schematically show _ fingerprints with local dye media or The signal characteristics of the dry blank optical record carrier of the black dot. Figure 4a to Figure 4d schematically show the change of the normalized mirror signal and the wobble signal of the blank light with a fingerprint and black spot defect to the δ record carrier. And Figure 5 shows a schematic block diagram of defect detection in accordance with an embodiment of the present invention. [Main component symbol description] 10 Optical record carrier 50 RF signal processing unit 52 Spindle motor 54 Optical pickup unit 56 Laser diode drive 57 Decoder unit 58 Encoder unit 59 Control unit 40〇 Defect detection unit 131383. Doc 200912909 402 Analog-to-Digital Converter 404 Shangtong Filter, Wave 406 Average FIR Filter 408 Comparator 410 Logic AND Circuit 442 Analog-to-Digital Converter 444 Local Pass Filter 446 Average FIR Filter 448 Digital Slope Detector 450 Comparator 452 Logic AND Circuit 500 Optical Driver

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Claims (1)

200912909 十、申請專利範圍·· 1. 一種方法，其包含： 在將資料實際記錄在光學記錄載體上前的一時刻基於 在光學記錄載體上的至少一個缺陷之偵測而控制在一光 學記錄载體上的資料之記錄。 2·如請求項1之方法，其進一步包含： 使用一測量鏡信號與一測量擺動信號，偵測在該光學 記錄栽體上之該至少〆個缺陷。 3 .如請求項2之方法，其進一步包含： 決定該測量鏡信號是否位在預定義下限鏡信號臨限值 與預定義上限鏡信號臨限值之間； 若是如此’則決定在該測量擺動信號中之干擾是否高 於一預定義之擺動信號臨限值，其中該干擾係獲自該測 量擺動信號之一最大峰值與一最小峰值間之一差異；以及 若是如此，則宣告/指紋缺陷係存在於該光學記錄載 體上。 4. 如請求項3之方法，其進一步包含： 決定該測量鏡信號是否位在該預定義下限鏡信號臨限 值之下； 右是如此，則決定該測量擺動信號之該干擾是否位在 該預定義之擺動信號臨限值之上；以及 若是如此，則宣告一黑點、一白點、一刮痕、—氣泡 或一染料缺陷之至少一者係存在於該光學記錄載體上。 5. 如請求項1至4中任一頊之方法，其進一步包含： 131383.doc 200912909 在閒置時間期間決定該光學記錄載體上之該至少一個 缺fe，其中该閒置時間係一介於開始填充記錄資料緩衝 區與開始將該資料記錄在光學記錄載體上間之時段。 6.如研求項1至4令任一項之方法，其中控制在該光學記錄 載體上的該資料之該記錄包含： 藉由起始一取決於偵測到的缺陷之一類型之缺陷處置 機制而控制在該光學記錄載體上的該資料之該記錄。 月长項6之方法，其中該缺陷處置機制在實際記錄該 資料期間基於該指紋缺陷之㈣到的位置來調整記錄參 數。 8.如β求項6之方法，其中該缺陷處置機制在實際記錄該 ::广·月間基於„亥黑點、該白點、該刮痕、該氣泡或該染 料缺陷之至少一個之該偵測到的位置而跳過偵測到的缺 陷區域。 9.如喷求項i至4中任一項之方法其中該方法係在—空白 光學記錄載體上執行。 1〇. 一種光學驅動器（500)，其包含： :制早兀(59)，其係配置以在將該資料實際記錄在 以:記錄載體上前的一時刻基於在該光學記錄載體上 ί料：個缺陷之該偵測而控制在-光學記錄载體上的 貝枓之記錄。 J 11.12. 一種記錄器，其包含如請求項 -種電腦程式’其包含配置 件’垓方法包含： 10之光學驅動器。 以執行一方法之程 式碼構 131383.doc 200912909 在將資料實際記錄在一光學記錄載體上前的一時刻基 於在該光學記錄載體上的至少一個缺陷之偵測而控制在 該光學記錄載體上的該資料之記錄。 / i 131383.doc200912909 X. Patent Application Range 1. A method comprising: controlling an optical record carrier based on detection of at least one defect on the optical record carrier at a point prior to actual recording of the material on the optical record carrier Record of physical data. 2. The method of claim 1, further comprising: detecting the at least one defect on the optical record carrier using a measurement mirror signal and a measurement wobble signal. 3. The method of claim 2, further comprising: determining whether the measurement mirror signal is between a predefined lower limit mirror signal threshold and a predefined upper limit mirror signal threshold; if so, determining a swing in the measurement Whether the interference in the signal is higher than a predefined swing signal threshold, wherein the interference is obtained from a difference between a maximum peak value and a minimum peak value of one of the measured swing signals; and if so, the announcement/fingerprint defect system exists On the optical record carrier. 4. The method of claim 3, further comprising: determining whether the measurement mirror signal is below a threshold value of the predefined lower limit mirror signal; if the right is the case, determining whether the interference of the measurement swing signal is at the Above the predefined swing signal threshold; and if so, at least one of a black dot, a white dot, a scratch, a bubble or a dye defect is present on the optical record carrier. 5. The method of any of claims 1 to 4, further comprising: 131383.doc 200912909 determining the at least one absence on the optical record carrier during the idle time, wherein the idle time is between the start of the fill record The data buffer and the period between the start of recording the data on the optical record carrier. 6. The method of any one of clauses 1 to 4, wherein the recording of the data on the optical record carrier comprises: disposing of a defect by a type that depends on one of the detected defects The mechanism controls the recording of the material on the optical record carrier. The method of Month Length 6, wherein the defect handling mechanism adjusts the recording parameters based on the position of the fingerprint defect (4) during the actual recording of the data. 8. The method of claim 6, wherein the defect handling mechanism actually records the:: Detecting at least one of the black point, the white point, the scratch, the bubble, or the dye defect The detected position is skipped of the detected defect area. The method of any one of the items i to 4, wherein the method is performed on a blank optical record carrier. ), comprising: a system (59) configured to detect the defect on the optical record carrier at a time prior to actually recording the material on the record carrier. Controlling the recording of the beigu on the optical record carrier. J 11.12. A recorder comprising, as the request item, a computer program 'which contains a configuration piece', the method comprising: an optical drive of 10. To perform a method The code structure 131383.doc 200912909 controls the recording of the data on the optical record carrier based on the detection of at least one defect on the optical record carrier at a point prior to actual recording of the material on an optical record carrier. / i 131383.doc
TW97117352A 2007-05-11 2008-05-09 Method of recording over defects TW200912909A (en)

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JP2000311373A (en) * 1999-04-28 2000-11-07 Sony Corp Disk drive
US7020385B2 (en) * 2000-03-13 2006-03-28 Matsushita Electric Industrial Co., Ltd. Method for information recording and apparatus therefor
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