TW200818155A - A device for and a method of retrieving information - Google Patents

A device for and a method of retrieving information Download PDF

Info

Publication number
TW200818155A
TW200818155A TW96123528A TW96123528A TW200818155A TW 200818155 A TW200818155 A TW 200818155A TW 96123528 A TW96123528 A TW 96123528A TW 96123528 A TW96123528 A TW 96123528A TW 200818155 A TW200818155 A TW 200818155A
Authority
TW
Taiwan
Prior art keywords
jitter
data
value
error
unit
Prior art date
Application number
TW96123528A
Other languages
Chinese (zh)
Inventor
Yu Zhou
Original Assignee
Koninkl Philips Electronics Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of TW200818155A publication Critical patent/TW200818155A/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10018—Improvement or modification of read or write signals analog processing for digital recording or reproduction
    • G11B20/10027—Improvement or modification of read or write signals analog processing for digital recording or reproduction adjusting the signal strength during recording or reproduction, e.g. variable gain amplifiers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10212—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter compensation for data shift, e.g. pulse-crowding effects
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10481—Improvement or modification of read or write signals optimisation methods
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • 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
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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
    • G11B7/0948—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 specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
    • 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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0953—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
    • 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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/1062—Data buffering arrangements, e.g. recording or playback buffers
    • G11B2020/10814—Data buffering arrangements, e.g. recording or playback buffers involving specific measures to prevent a buffer underrun

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Multimedia (AREA)

Abstract

A device for retrieving information from a disc-like optical record carrier (11). The device comprises reading means (21, 22, 25, 30) for reading the information recorded on the record carrier and control means (20) for controlling the reading. Further, the device comprises disc error determination and correction means (32, 36, 37, 38, 39, 40, 41, 42) for determining disc errors and taking corrective actions by adjusting beam control parameters on the fly, during scanning of the record carrier. The disc errors handled by the disc error determination and correction means include tilt, unbalance, variable high-frequency signal asymmetry disc, bifringence disc, etcetera.

Description

200818155 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種用於自一碟片狀光學記錄載體擷取資 汛之i置，该資訊由沿該記錄载體上之一大體上螺旋形之 磁執的光學可讀標記表示，組織成資訊單位之資訊包含主 資料及誤差校正資料，該裝置包含·· -一旋轉單元，其用於旋轉記錄載體； -一讀取頭，其用於藉由一輻射束來掃描該磁軌及基於該等 標記而產生一高頻信號； _ 一讀取頭控制單元，其用於使用表示控制參數之信號來控 制該輻射束之產生及定位； -一解碼單元，其用於將該高頻信號處理成該主資料及該誤 差校正資料； 誤差校正單元，其用於使用誤差校正資料來發現並校正 資料誤差；及 "5己憶體緩衝區，其用於過渡性地儲存主資料。 本發明進一步係關於一種自一碟片狀光學記錄載體擷取 資訊之方法，該資訊由沿該記錄載體上之一大體上螺旋形 之磁軌的光學可讀標記表示，組織成資訊單位之資訊包含 主資料及誤差校正資料，該方法包含下列步驟： a) 旋轉記錄載體且藉由一由一讀取頭產生之輻射束來掃插 該磁軌； b) 使用表示控制參數之信號來控制該輻射束之定位； c) 藉由該讀取頭基於該等標記而產生一高頻信號； 122320.doc 200818155 獅高頻信號處理成該主資料及該誤差校正資料； e)使用决差才父正資料來發現並校正資料爷差及 〇將主資料過渡性地儲存p記憶體緩衝區中。 本么明亦係關於一種在一嘈取奘罢△ ^ 載Μ取自一碟片狀光學記錄 戟體擷取貝訊中使用的電㈣ 【先前技術】 與硬碟機對比’光碟機之最具挑戰性部分為其能夠播放 各種各樣碟片的穩固性要求。 J 批次相同類型之碟片即 使在同一碟機上可能且右+入 b /、有70王不同之回放品質係極其常見 可能由類似指紋、刮痕及灰塵之局部碟片缺陷引起， 由特殊碟片誤差引起’特殊碟片誤差類似碟片偏 、碟片不平衡性、碟片傾斜、碟片基板層厚度之差昱、 ^斤射碟片、可變β(貝他）/不對稱性碟片及導致（例如）得自 碟片之高頻信號之品質改變的其他碟片誤差。此問題隨著 對各種各樣光學記錄器之廣泛使用而變得更顯著。記錄於 不同媒體上的且由不同記錄器記錄之高頻信號的大 能導致嚴重回放問題。 由：國專利US 6,747,924揭示之光碟再生設備藉由在碟 片之只際再生之前關於光碟之複數個測試徑向位置執行測 試再生來解決此問題。在該測試再生期間，設備將高頻信 號之—焦點平衡/偏移及—均衡器調整至最佳設定，隨後在 實際再生期間使用最佳設定。然而，不保證在實際再生期 間將不會出現導致耗時校正動作或甚至再生之中斷的碟片 122320.doc 200818155 【發明内容】 因此，本發明之一目標 再生期問卢报派μ 奸士、—種在資料自碟片之實陬 丹玍J間處理碟片誤差的有效方式。 員IV、 出於此目㈣，根據本發明之一 所述的用於賴取資訊之褒置進」1樣’如在開頭段中 差及控制讀取頭控制單元 用於判定碟片誤 碟片决差判定及校正單元包含下列子單&, 遠 Ο200818155 IX. Description of the Invention: [Technical Field] The present invention relates to an apparatus for extracting information from a disc-shaped optical record carrier, the information being substantially spiraled along one of the record carriers The optically readable mark of the magnetic shape indicates that the information organized into the information unit includes the main data and the error correction data, and the device comprises: a rotating unit for rotating the record carrier; - a read head, which is used Scanning the magnetic track by a radiation beam and generating a high frequency signal based on the marks; a read head control unit for controlling the generation and positioning of the radiation beam using a signal representative of the control parameter; a decoding unit for processing the high frequency signal into the main data and the error correction data; an error correction unit for detecting and correcting data errors using the error correction data; and "5 memory buffer Zone, which is used to store primary data in a transitional manner. The invention further relates to a method of extracting information from a disc-shaped optical record carrier, the information being represented by optically readable indicia along a substantially spiral track of the record carrier, organized into information unit information Include main data and error correction data, the method comprising the steps of: a) rotating the record carrier and sweeping the track by a radiation beam generated by a read head; b) controlling the signal using a signal representative of the control parameter Positioning the radiation beam; c) generating a high frequency signal based on the marks by the read head; 122320.doc 200818155 The lion high frequency signal is processed into the master data and the error correction data; e) using the decision to be the father Positive data to find and correct the data difference and the main data is stored in the p memory buffer. This is also about the kind of electricity that is used in a piece of optical recording of a piece of optical recording of the body. (4) [Previous technique] Compared with the hard disk drive, the most The challenging part is the ability to play the robustness of a wide variety of discs. J batches of the same type of discs may be on the same disc player and right + in b /, with 70 kings different playback quality is extremely common may be caused by partial disc defects like fingerprints, scratches and dust, by special Disc error causes 'special disc error is similar to disc offset, disc imbalance, disc tilt, disc substrate layer thickness difference, ^ 射 disc, variable β (beta) / asymmetry Discs and other disc errors that result in, for example, quality changes in the high frequency signals from the disc. This problem has become more pronounced with the widespread use of a wide variety of optical recorders. The power of high frequency signals recorded on different media and recorded by different recorders causes severe playback problems. The optical disc reproducing apparatus disclosed in the Japanese Patent No. 6,747,924 solves the problem by performing test regeneration on a plurality of test radial positions of the optical disc before the disc is regenerated only. During this test regeneration, the device adjusts the focus balance/offset and equalizer of the high frequency signal to the optimal setting, and then uses the optimal settings during the actual regeneration. However, there is no guarantee that discs that cause time-consuming corrective action or even interruption of regeneration will not occur during actual reproduction. 122320.doc 200818155 [Invention] Therefore, one of the objects of the present invention is to renew the period of time, - An effective way to deal with disc errors between the actual data and the disc. Member IV, for this purpose (4), according to one of the present invention, the information for the information is as follows: as in the beginning, the difference between the control head and the control head control unit is used to determine the disc error. The slice decision and correction unit contains the following sub-singles &

G -一監視單元，其料選擇磁軌之區域，用於監 磁執之位置且用於檢杳未 、 田射束沿 笪禾杈正貧料誤差之出現； -一取樣單元，其用於在輕射 資料每m 长竿田射束所進入之每一區域中取樣一 貝料决差率及 <一抖動^棄笛 ^ . 升動達弟一預定次數，該 號之時間變化； 衣下呵頻化 預一Λ算*單元’其用於將一區域抖動計算為抖動對應於第- 預疋\數之平均值且用於脸 值且用於將一區域資料誤差 誤差率制於第-職錢之平均值； 驗证早7C，其用於在區域抖動以一預定抖動差值而盘任 :他區心斗動不同的狀況下檢查區域抖動及區域資料誤 差率之-第-預定條件’該其他區域抖動係針對任何先前 掃描之區域而計算’且該驗證單元用於在滿足該第一預定 條件的狀況下請求-控制參數基於f料誤差率之一校準， 否則請求該控制參數基於抖動之一校準，控制參數係致動 器傾斜或焦點偏移； -一校準單元，其用於在記憶體緩衝區之佔㈣高於一預定 位準的狀況下或在主資料中出現一未校正資料誤差的狀況 122320.doc 200818155 下執行所請求校準，該校準包含針對控制參數之不同值量 測如請求中之抖動或資料誤差率及判定控制參數之分別= 應於抖動或資料誤差率之一極小值的一區域調整值；及 -一調整單元，其用於在所請求校準成功的狀況下儲存控制 參數之區域調整值以供掃描區域期間使用且將控制參^設 定至區域調整值。 恶樣，如在開頭段中 出於此目的，根據本發明之G - a monitoring unit, the material of which selects the area of the magnetic track, is used for monitoring the position of the magnetic pole and is used for checking the occurrence of the error of the poor beam of the field beam along the ; 笪 ;; - a sampling unit, which is used for Sampling a bail rate and a flicker in each area where the light beam data enters each m long field beam into the area and <1 jitter and discard the flute ^. Raise the Dian a predetermined number of times, the time of the number changes; The next frequency calculation unit* is used to calculate a region jitter as the average value of the jitter corresponding to the first-pre-equivalent number and is used for the face value and is used to make the error error rate of a region data - the average value of the job; verification 7C, which is used to shake the area with a predetermined jitter difference: the area jitter and the regional data error rate under the different conditions of the zone - the first - the scheduled The condition 'this other area jitter is calculated for any previously scanned area' and the verification unit is used to calibrate the request-control parameter based on one of the f-material error rates if the first predetermined condition is met, otherwise requesting the control parameter Control parameter system actuator based on one of the jitter calibration Oblique or focus offset; - a calibration unit for performing under the condition that the memory buffer (4) is above a predetermined level or an uncorrected data error occurs in the main data 122320.doc 200818155 The requested calibration, which includes measuring the different values of the control parameters such as the jitter or data error rate in the request and determining the control parameters respectively = a regional adjustment value that should be one of the jitter or data error rates; and - An adjustment unit for storing the area adjustment value of the control parameter for use during the scan area and setting the control parameter to the area adjustment value in the case where the requested calibration is successful. a bad example, as in the opening paragraph for this purpose, according to the invention

所述的擷取資訊之方法進一步包含下列步驟： g) 檢查未校正資料誤差之出現； h) 選擇磁執之區域； 1)監視輻射束沿磁軌之位置； υ對於選定區域中㈣射束所進人之每_區域，取樣一 及一資料誤差率達第一預定 _ 時間變化； 冑糾動表不南頻信號之 Ο k)將一 值； 區域抖動計算為抖動對應於第 一預定次數之平均 1)將-區域資料誤差率計算為資 次數之平均值； 料誤差率對應於第 一預定 m)在區域抖動以一預 同的m , 值而與任何其他區域抖動不 =二區域抖動及區域資料誤差率之-第-預 =件’域抖動係針對任何先前掃描之區域而計 社斶疋弟一預定條# 料誤差率之一校準，^ 況下，請求一控制參數基於資 求該控制參數基於抖動之一校 122320.doc 200818155 準，控制參數係致動器傾斜或焦點偏移； =:體屮緩衝區之佔用率高於-預定位準的狀況下或在 準貝：二:未校正資料誤差的狀況下執行所請求校 卓“权準“針對控制參數之不同值量测如請求中之抖 _ ==_及判定控制參數之分別對應於抖動或資料 口、至率之極小值的一區域調整值；及 • p)在所請求校準成功的狀況下，儲存控制參數之區域調整 p值以供掃描區域射枝用且將控制參數設定至區域調整 值。 出於此目的’根據本發明之一第三實施例，提供一種如 在開頭段中所述的供擷取資訊使用之電腦程式產品，★亥電 腦程式包含用於在電腦程式於讀取震置之一處理器上執行 時使該處理器執行如關於本發明之第二態樣描述之方 程式碼構件。 根據本發明之措施具有在再生期間/作業中⑽加为)判 〇 《不同類型之碟片疾差，且基於該判定而應用有效校正動 作《準）的效應。此適應性碟片誤差判定及校正改良 之效能。 " 、在衣置之貝知例中，控制參數係致動器傾斜，碟片誤 、、’j疋；k正單元經凋適以在由焦點偏移代替致動器傾斜 的情況下於同-區域内重複子單元之動作。此允許在傾斜 杈正之後的更最佳化焦點偏移校準。 在裝置之另—實施例中，所請求校準為控制參數基於抖 動之技帛石茱片，吳差判定及校正單元經調適以在由徑向偏 122320.doc 200818155 移代替控制參數的情況下於同一區域内 及調整單元之動作。除標準校準之外，β向偏元 =準可進-步改良效能。此特定地對不對稱類;： Ο Ο 有利地，碟片誤差判定及校正單元經調適以使得… 頻信號之狀況下，由-包含針對控制參數之不同值量Ζ 徑=誤差信號及判定控制參數之對應於該徑向誤差信號之 -最佳值的區域調整值的校準代替所請求校準，徑向誤、 信號係由讀取頭基於-指示磁軌之預壓印磁執㈣而1 生。此使得在不存在高頻信號時之情況下執行校正動 可能的。 々若碟片誤差判定及校正單元包含—用於下列各項之不對 %性及不平衡性偵測單元，則其係有利的·· :在主資料中出現一未校正資料誤差的狀況下，取樣高頻信 唬之不對稱性達第二預定次數； -_將一平均不對稱性計算為高頻信號之不對稱性對應於第 一預定次數之平均值；及 -在平均不對稱性處於1定不對稱性㈣外的狀況下，校 正高頻信號之不對稱性’否則測試記錄載體之不平衡性。 此有助於判定不對稱性碟片及設I校正動作。 在裝置之-實施例中’不對稱性及不平衡性制單元經 調適以藉由下列各頂氺ρ τ _ 夺貝來才父正鬲頻信號之不對稱性： •取樣抖動及資料誤差率達第三預定次數且計算抖動及資 料誤差率之對應平均值； 122320.doc -10- 200818155 -檢查抖動及資料㈣率之平均值的―第二^條件I -在滿足第二預定條件的狀況τ，針對高頻信k 之不同設定量測資料誤差率且判心 #鱼少一托U士 A a J銜σσ之對應於資料誤 ^之-極小值的最佳設定，否則針對均 :測抖動且判定均衡器之對應於抖動之-極小值的最:: 疋。此杈正了歸因於高頻信號 产壯Μ 个對稱性的效能問題。 在衣置之另—實施例中，不對稱性及不平衡 Ο Ο 經調適以藉由針對一徑向偏移之不同值量測料、^二 向偏移之對應於抖動之一極小 I且判疋徨 沮q 取佳值來校正黑冲g P 號之不對稱性。此可用作校正歸 …… τ Μ %冋頻仏唬之不對金 之效能問題的替代或額外(改良)措施。 二二之Γ一貫施例中’不對稱性及不平衡性偵測單元 、、：以猎由下列各項來測試記錄載體之不平衡性： -取樣一徑向積分器達第四預定次數，· -將一平均徑向積分器計算 次數之平均值； 向積分器對應於第四預定 -將—不平衡性指示器計算為 之一旋轉頻率之平方的比；千〜向積U與記錄载體 下在不二衡性指示器處於—預定不平衡 下，減小記錄载體之旋轉_ L 士 m凡 且庫用浐專1率。此使得偵測不平衡性碟片 應用奴正動作係可能的。 月 第-及一，％例中，處理高頻信號包含高頻信號之一 内，且’第二⑽益被自動地㈣於一範圍 且碟片誤差判定及校正單元經調適用於：犯園 122320.doc 200818155 -監視第二級增益之值； -依賴第二級增益之測得值而調整第—級增益以便 級增益遠離該範圍之界限。此允 一 片引起之誤差。 錄雙折射碟 在附加之申請專利範圍中給出根據本發明之裝 的其他較佳實施例，盆夕掘-如h /5r 中。，J其之揭不内容以引用的方式併入本文 【實施方式】 Ο Ο 圖1:不一具有一磁執9及一中心孔1〇之碟片狀記錄載 體。磁執9根據一螺旋形圈圖案而配置，構成—資訊層上 之大體上平行之磁軌。記錄載體可為光學可讀的，被：為 无碟。所記錄資訊在資訊層上由沿磁軌記錄之光學可们則 標記表示。該等標記由_物理參數之變化構成，且藉此且 有不同於其周圍物質之光學性質(例如，反射變化”資訊層 上之標記可為預壓印的，如在諸如CD_R〇M或DVD之唯讀 碟片中。或者，資訊層或其之至少一部分可為可記錄類型 (其上可記錄標記）。可記錄碟片之實例為cd_r、cd_rw& DVD之可寫版本（諸如DVD+RW)及被稱為藍光光碟（⑽之 兩密度可寫光碟。可記錄類型之記錄載體上的磁軌9由在製 造空白記錄載體期間提供的預壓印磁軌結構(例如，預刻溝 槽）指示。 圖ib為沿可記錄類型之記錄載體u之線b_b所截取的橫 截面，其中一透明基板15具備一記錄層“及―保護層Η。 磁執結構（例如）由使-讀取/寫人頭在掃描期間能夠遵循磁 122320.doc 12 200818155 執9的預刻溝槽14構成。預刻溝槽14可經實施為壓痕或隆起 (evation)，或可由具有與環繞其之材料不同之光學性質的 材料組成。磁執結構亦可由週期性地使祠服信號出現之規 則分布的子磁執形成。記錄載體可意欲載運即時資訊（例 視Λ或曰讯為訊）或其他資訊（諸如電腦資料）。 Γ Ο 圖lc展不(可,己錄)碟片之磁執之橫向位置之一週期變化 (亦被稱為擺動）之-實例。料變化使—額外信號出現於輔 ^貞測器中’例如’ “於-由—掃描裝置之-頭中之中 光·、、、占中之子m或部分偵測器產生的推挽通道中。擺 動係（例如）頻率調變的且位置資訊在調變中編碼。對一包含 以該方式編狀碟片控制資訊之可寫cd系統中之如圖卜 斤丁之先4技術擺動的綜合描述可見於us 4,9〇1，3〇〇及 一 ’6"中味，主思，意欲由一掃描頭中之（子）谓測器 精反射輕射變化㈣測的其他橫向變化係已知的，諸如磁 執、鄰近磁執之預财凹坑(preph)及其他之寬度變化。 圖2展示一根據本發明的用於自一諸如cd_r〇m、dvd、 穿 C^RW、DVD+RW*BD之記錄載體11#員取資訊的 Μ例。该裝置具備用於掃描記錄載體11之磁執的 元2 i冓件4等構件包括—用於旋轉記錄載體11之旋轉單 用於藉由輻射束24來掃描磁軌之讀取頭22及一 制輻射束之產生及定位的讀取頭控制單元U。頭Μ =6知類型之光學系統，其用於產生導引穿過光學元 _$體之資訊層之一磁執上產生輕射光㈣的輻 、 幸田射束24由-輻射源(例如，雷射二極體)產生。頭 122320.doc -13 - 200818155 進一步包含（未圖示）：一聚焦致動器，其用於藉由將輻射束 24之焦點沿該射束之光軸移動來將射束聚焦至磁軌上之輕 射光點23 ;及一滑車（sie(jge)及一循執致動器，其用於將在 一橫向於磁轨之掃描方向之方向上的輻射光點2 3定位於磁 執之中心上。對於一碟片狀媒體，橫向方向被稱為徑向方 向且循執致動器被稱為徑向致動器。循執致動器可包含用 於徑向地移動一光學元件之線圈或可替代地經配置以改變 一反射元件之角度。類似地，聚焦致動器可包含用於移動 輻射束24之焦點的線圈。應注意，聚焦及徑向致動器可以 一用於定位一諸如透鏡之光學元件且執行該等致動器之功 能的致動器之形式建構。循執及聚焦致動器藉由圖3中之來 自讀取頭控制單元25之致動器信號RA&FA驅動。為了讀 取’由資訊層反射之輻射被讀取頭22中一通常類型之铺測 器（例如，四象限二極體）偵測以產生耦合至一前端單元31 以產生各種掃描信號的偵測器信號（包含一主偵測器信號 (j 3 3及用於擔軌及聚焦之子偵測器信號3 5)。主偵測器信號3 3 亦被稱為高頻（HF)信號。子偵測器信號35耦合至讀取頭控 制單元25以用於控制該等聚焦致動器。子偵測器信號^之 實例分別為圖3中之聚焦誤差信號FEN及徑向誤差信號 REN。 … 圖3展不用於控制徑向及焦點致動器之所謂的焦點/徑向 控制迴路之一實例。 主偵測器信號33由一包括一解碼單元及一誤差校正單元 及輸出單元的通常類型之讀取處理單元3〇處理以擷取資 122320.doc -14- 200818155 訊。解碼單元係用於將高頻信號處理成包含於資訊中之主 貝料及秩差校正資料。誤差校正單元係用於使用誤差校正 貧料來發現且校正資料誤差。讀取處理單元可包含一用於 過渡性地儲存主資料之記憶體緩衝區。或者，記憶體緩衝 區可為一獨立單元。因此，用於讀取資訊之讀取構件包括 旋轉單元21、讀取頭22、讀取頭控制單元25及讀取處理單 元30。 、 碩取頭22亦被稱作光學拾取單元〇pu。 裝置包含一控制單元2〇,其經由控制線26(例如，系統匯 流排）連接至裝置中之其他單元以用於控制此等單元。控制 單元20包含用於執行不同控制程序及功能之控制電路，例 如，微處理器、程式記憶體及介面。控制單元20亦可經實 施為邏輯電路中之狀態機。控制單元20控制掃描（例如，用 於記錄或讀取資訊）且可經配置用於自一使用者或自一主 機電腦接收指令。 Q &置可具備用於將資訊記錄於一可寫或可重寫類型之記 錄載體（例如，CD-R或CD-RW，或DVD+RW或BD)上的記錄 構件。在此狀況下，讀取頭22經調適用於將標記記錄於一 記錄載體上。記錄構件與頭22及前端單元31合作以產生一 寫入輻射束，且包含用於處理輸入資訊以產生一寫入信號 來驅動頭22的寫入處理構件，該等寫入處理構件包含一輸 入單元27、一格式器28及一調變器29。為了寫入資訊，輻 射束之功率由調變器29控制以在記錄層中產生光學可福測 標記。標記可為任何光學可讀形式，例如，以藉由諸如染 122320.doc -15- 200818155 料、合金或相變材料之材料記錄時獲得的具有不同於其周 圍，反射係數的區之形式，或以藉由磁光材料記錄時 獲得的具有不同於其周圍物質之偏振方向之區的形式。將 貧訊寫入到光碟上/自光碟讀取f訊及格式化、誤差校正及 通道編碼規則在此項技術中（例如）自CD及DVD系統係熟知 在-實施例中，裝置僅係—儲存系統，例如，供電腦使 用之光碟機。控制單亓妳献里 〇 〇 市」早兀20經配置以經由一標準化介面（未圖 示）與主機電腦中之—處理單元通信。數位資料直接介面傳 輸至格式器單元28且自讀取處理單元3〇介面傳輸。在此狀 況下，介面充當輸入單元及輸出單元。 在-貫施例中’裝置經配置為一單獨單元，例如，供消 費者使用之視訊回放/記錄裝置。控制單元2〇或—包括於裝 置中之額外主機控制單元經配置以直接由使用者控制。裝 置包括應用資料處理(例如，音訊及/或視訊處理)電路。呈 給輸入單元27之資訊可包含類比音訊及/或視訊或數位未 壓縮音訊/視訊信號；在此狀況下’輸入單元27可包含用於 此等信號之壓縮構件。讀取處理單元3〇可包含合適之音訊 及/或視訊解壓縮單元。 在操作甲，讀取頭控制單元25應用用於控制輻射束之各 種態樣的一組射束控制參數。一射束控制參數之_第一實 例係關於達成一正確焦點，且被稱為焦點偏移。焦點偏^ 用以為控制焦點之子偵測器信號及/或致動器信號提供經 s周整设定點。焦點偏移可（例如）補償光學系統或偵測器在頭 122320.doc -16- 200818155 中之位置偏差。一射束控制參數之一相似實例被稱為徑向 爲私且補&掃為光點之橫向位置。—射束控制參數之另 碩早m轉早凡）中之傾斜或碟片傾斜。其他射束控制參 數可關於射束之功率、射束中某些信號元件之時序等。實 務上，射束控制可（部分地）在軟體或在其他單元（諸如雷射 力率匕制早7G或來自一記錄單元之信號圖案）中實施。注 意，射束控制參數在製造裝置期間可能要求校準或量測， 或在使用裝置期間可能受老化、溫度或其他實際操作條件 影響。 用於擷取資訊之裝置包含1於判定碟片誤差且控制讀 取頭控制單元25之碟片誤差判定及校正單元32。碟片誤差 之軸碟片偏差、碟片不平衡性、碟片傾斜、碟片；板 層厚彡之差異、雙折射碟片、可變ρ/不對稱性碟片及導致(例 如）得自碟片之高頻信號之品質（特性）改變的其他碟片誤 差。 、 ^碟片决差判疋及杈正單元32依賴已偵測碟片誤差藉由將 貝取頭k制單元25之-選定射束控制參數調整至一自一校 準私序獲得之校準值來控制讀取頭控制單元25。此程序可 (例如▲)基於高頻信號之抖動(HF抖動)，該抖動表示此信號之 時間變化。舉例而言’抖動可經呈現為經過解碼單元之均 衡器的數位化資料之時間變化之一標準差；如此項技術中 所已知士，信號之前邊緣及後邊緣之抖動係相對於鎖相迴路 (PLL)時脈而量測且由通道位元時脈標準化。一校準程序亦 122320.doc -17- 200818155 可基於一借助於讀取處理單元30所處理之資訊中的資料誤 差率來量測資料擷取之品質的參數。舉例而言，如自Dvd 系統所已知，可使用所謂的PI BLER(内部奇偶碼區塊誤差 率）。此處’資訊單位可為單一區塊或區塊群。pi Bler亦 已知為”pI Sum 8”，其係8個誤差校正碼區塊上的内部奇偶 誤差之一移動平均和。在CD碟片之狀況下，一對應參數係 所謂的Cl BLER。應注意，在下文中，PI BLER亦可表示山 BLER、PI Sum 8或更一般之術語·資料誤差率。 當然，以上兩個品質參數（抖動及資料誤差率）僅可在基 於磁軌中之標記而產生之高頻信號存在的情況下得以量 測。 然而，徑向誤差信號對磁執之擺動的依賴性可用於不具 有標記之位置處。因此，可在可記錄碟片之最佳功率控制 程序期間且在於該等碟片上記錄期間使用基於徑向誤差信 號之校準。 〇 碟片誤差判定及校正單元32監視記錄載體之掃描，評估 品質參數以便識別不同碟片誤差且（若必要的話）採取校正 動作。 出於此目的，碟片誤差判定及校正單元32包括下列子單 元： -一監視單元36,其用於選擇磁執之區域，用於監視輻射束 /〇磁轨之位置且用於檢查未校正資料誤差之出現； 取樣單元37’其用於在輕射束所進入之每一區域中取樣 一資料誤差率及一抖動達第一預定次數，該抖動表示高頻 122320.doc •18- 200818155 信號之時間變化； --計算單元38,其用於將 一預定攻I夕巫μ μ 寸m冲#為抖動對應於第 ^且用於將—區域資料誤差率’管 料誤差率對應於第-預定次數之平均值’·革“為貝 --驗證單元39,其用於在區域 杯打甘从r丄 情乂預疋抖動差值而與 〇 Ο :他區域抖動不同的狀況下檢查區域抖動及區 =之：第一預梅’該其他區域抖動係針對任何先 j :田之區域而什异’且該驗證單元用於在滿足該第一預 :i、件的狀況下請求一控制參數基於資料誤差率之一校 致動=ΓΓ控制參數基於抖動之一校準，控制參數係 致動裔傾斜或焦點偏移； -一校準單元40,其用於在記憶體緩衝區之佔用率高於一預 定位準的狀況下或在主資料中出現一未校正資料誤差的狀 =下執行所請求校準，該校準包含針對控制參數之不同值 1測如請求中之抖動或資料誤差率及判定控制參數之分別 對—應^動或資料誤差率之一極小值的一區域調整值；及 ▲周正單TL 41 ’其用於在所請求校準成功的狀況下儲存控 /數之區域D周整值以供掃描區域期間使用且將控制參數 设疋至區域調整值。 因此’碟片誤差判定及校正單元32之子單元執行一包含 下列步驟之方法： g) 檢查未校正資料誤差之出現； h) 選擇磁軌之區域； i) 監視輪射束沿磁軌之位置； 122320.doc -19- 200818155 j) 對於選定區域中的輻射束所進入之每一區域，取樣一抖動 及一育料誤差率達第一預定次數，該抖動表示高頻信號之 時間變化； k) 將一區域抖動計算為抖動對應於第一預定次數之平均 值； l) 將-區域資料誤差率計算為詞誤差率對應於第一預定 次數之平均值； Ο (j m) 在區域抖動以—料抖動差值而與任何其他區域抖動不 同的狀况下，檢查區域抖動及區域資料誤差率之一第一預 錢件，該其他區域抖動係針對任何先詩描之區域而計 异； η)在滿足第—預定條件的狀況下，請求一 料誤差率夕 >、隹 4 /戈人在貝 Μ&準’否則請求該控制參數基於抖動之-校 /桎制參數係致動器傾斜或焦點偏移； ==緩衝區之佔用率高於-預定位準的狀況下或在 準二：準:未校正資料誤差的狀況下執行所請求校 二:::準包含針對控制參數之不同值量測如請求 動或貝枓誤差率及判定控制參 莩罢瘟夕 k 〜對應於抖動或資料 决差羊之-極小值的一區域調整值；& P)在所明求校準成功的狀況下 值以供掃描區❹門伟… 工制參數之區域調整 值。 ㈣使用且將控制參數設定至區域調整 越過碟片之碟片傾斜或基板層 側可能不同。儘管在碟片内侧至碟片外 …!中’由碟片誤差判定 122320.doc -20- 200818155 及校正單元32在起動時於碟片内側進行（致動器）傾斜校準 及焦點偏移校準且設定最佳傾斜及焦點偏移以達成最小抖 動點，但若在自碟片内側至碟片外側播放時碟片傾斜或基 板層厚度改變，則HF信號品f (抖動及piBLER)可能牵化。 對於傾斜碟片與不同基板層厚度兩者，可谓測徵兆係HF抖 動及/或PI BLER之增大。 ' 藉由監視單S36將整個碟片自内側至外側分割成若干區 域。對於傾斜或焦點偏移校準而言，在掃描彼等區域期間， … 在自内側至外側越過整個碟片之區域中進行校準。詳言 之，若區域（k)中之測得抑抖動比區域叫）、區域（k_2)等中 的測得HF抖動高/低⑽，且之前尚未進行區域k中之校 準’則將在此區域中進行校準。 在回放期間，由取樣單元37監視HF抖動及pi bler。此 藉由針對輕射束所進入之每一區域取樣抖動及ρι 之 值而進行。取樣點之數目係預定的。舉例而言，可藉由自 (J —解碼益暫存器讀取該等值來在記錄载體之-旋轉期間量 .測該等值達25次。隨後，由計算單元38對不同取樣點處的 HF抖動及PI BLER之測得值求平均值。當一特別區域之册 抖動之平均I以一、給定抖動差i而與在任何其他區域中所 1測之平均抖動值不同時，驗證單元39檢查平均抖動及 平均PIBLER之第-預定條件。小於〇.5%之抖動差值可能由 量測雜訊引起。越過區域的大於1%之差值通常意謂目前系 統設定對於此區域並非係最佳的。因此，在裝置之一實施 例中’給定抖動差值為1%。關於第一預定條件，實驗資料 122320.doc 200818155 展示HF抖動低於約13%且ΡΙ BLER>13〇的條件可用以決定 應該應用哪一類型之調整。可取決於—特別系統而應用其 他條件；以上條件主要對於DVD系統係最佳化^若滿足 此條件’ ’證單元39設定對基於PIBLER之校準的請求， 否則將請求基於抖動之校準。 〇The method for extracting information further comprises the steps of: g) checking for the occurrence of uncorrected data errors; h) selecting a region of the magnetic pole; 1) monitoring the position of the radiation beam along the track; υ for the selected region (four) beam For each _ area of the entered person, the error rate of sampling one and one data reaches the first predetermined _ time change; 胄 胄 表 不 不 南 ) k) will be a value; the area jitter is calculated as the jitter corresponding to the first predetermined number of times Average 1) Calculate the error rate of the -area data as the average of the number of times; the material error rate corresponds to the first predetermined m) in the region jitter with a pre-existing m, value and any other region jitter == two-region jitter And the regional data error rate - the first - pre-form 'domain jitter is for one of the previously scanned areas, and one of the predetermined error rates is one of the predetermined error rates, and then a control parameter is requested based on the request. The control parameter is based on one of the jitters 122320.doc 200818155, the control parameter is the actuator tilt or focus offset; =: the occupancy rate of the body buffer is higher than - the predetermined level or in the quasi-be: two : Uncorrected data error In the case of the execution of the requested calibrated "quantity" measurement of the different values of the control parameters, such as the jitter in the request _ == _ and the decision control parameters respectively correspond to a region of jitter or data port, the minimum value of the data rate Adjust the value; and • p) In the case where the requested calibration is successful, the area of the stored control parameter is adjusted for the p-value for the scan area and the control parameter is set to the area adjustment value. For this purpose, according to a third embodiment of the present invention, a computer program product for capturing information as described in the opening paragraph is provided, and the computer program included in the computer program is included in the reading of the computer program. When executed on one of the processors, the processor is caused to execute an equation code component as described in relation to the second aspect of the invention. The measure according to the present invention has the effect of judging "different types of discs during the reproduction/work (10) addition, and applying an effective corrective action "quasi" based on the determination. This adaptive disc error determination and correction improves the performance. " In the case of clothing, the control parameter is the actuator tilt, the disc error, 'j疋; k positive unit is adapted to be replaced by the focus offset instead of the actuator tilt The action of repeating subunits in the same-area. This allows for a more optimized focus offset calibration after tilting. In another embodiment of the apparatus, the requested calibration is a technique based on the jitter of the control parameter, and the ambiguity determination and correction unit is adapted to be replaced by a radial offset 122320.doc 200818155 instead of the control parameter. The action within the same area and adjustment unit. In addition to the standard calibration, the β-direction bias = quasi-advanced step-by-step improvement performance. This particular pair of asymmetry classes: Ο 有利 Advantageously, the disc error determination and correction unit is adapted such that, under the condition of the ... frequency signal, the value of the different values for the control parameters is included - the error signal and the decision control The calibration of the parameter corresponding to the region-adjusted value of the optimum value of the radial error signal replaces the requested calibration, the radial error, and the signal is based on the pre-imprinted magnetic (four) of the read head based on the indicated track. . This makes it possible to perform the correction in the absence of a high frequency signal. 々If the disc error determination and correction unit contains – for the following items, the mismatched and unbalanced detection unit is advantageous. • In the case where an uncorrected data error occurs in the main data, Sampling the asymmetry of the high frequency signal for a second predetermined number of times; -_ calculating an average asymmetry as the asymmetry of the high frequency signal corresponds to an average of the first predetermined number of times; and - the average asymmetry is at 1 Under the condition of asymmetry (4), the asymmetry of the high frequency signal is corrected' otherwise the unbalance of the record carrier is tested. This helps to determine the asymmetry disc and set the I correction action. In the device-embodiment, the 'asymmetry and imbalance unit' is adapted to asymmetry of the signal by the following top 氺 τ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The third predetermined number of times and the corresponding average value of the jitter and the data error rate are calculated; 122320.doc -10- 200818155 - The second condition I of checking the average of the jitter and the data (four) rate - the condition that satisfies the second predetermined condition τ, for the different settings of the high-frequency signal k, the error rate of the measured data and the judgment of the #鱼少一托U士 A a J σσ corresponds to the optimal setting of the data error - the minimum value, otherwise for the measurement: Determine the maximum of the equalizer corresponding to the jitter-minimum value: 疋. This is due to the performance problem attributed to high-frequency signals and strong symmetry. In another embodiment of the garment, the asymmetry and the imbalance Ο are adapted to be measured by different values for a radial offset, and the two-way offset corresponds to one of the jitters I and It is judged that the value of q is used to correct the asymmetry of the black rushing g P number. This can be used as an alternative or additional (improved) measure to correct the problem of τ Μ % 冋 冋 不 不 。. In the consistent application of the 'Asymmetry and Unbalance Detection Unit', the unbalance of the record carrier is tested by the following: - sampling a radial integrator for a fourth predetermined number of times, - the average of the number of calculations of an average radial integrator; the ratio of the integrator corresponding to the fourth predetermined-will-unbalance indicator as the square of one of the rotational frequencies; the sum of the product and the record carrier Under the body, under the unbalanced indicator, the rotation of the record carrier is reduced, and the library is used for the specific rate. This makes it possible to detect unbalanced discs using slave action. In the month-and-first, in the example, the high-frequency signal is processed in one of the high-frequency signals, and the 'second (10) benefit is automatically (four) in a range and the disc error determination and correction unit is adapted to: 122320.doc 200818155 - Monitor the value of the second stage gain; - Adjust the first stage gain depending on the measured value of the second stage gain so that the stage gain is far from the limit of the range. This allows an error caused by a piece. Recording a birefringent disk Another preferred embodiment of the device according to the invention is given in the scope of the appended patent application, in the case of a slab-like h /5r. The contents of the disclosure are incorporated herein by reference. [Embodiment] 1 Ο Figure 1: A disc-like record carrier having a magnetic core 9 and a center hole 1〇. The magnets 9 are arranged in accordance with a spiral pattern to form a substantially parallel track on the information layer. The record carrier can be optically readable and is: non-disc. The recorded information is indicated on the information layer by the optical records recorded along the track. The indicia consists of a change in the physical parameter, and whereby the indicia on the information layer of the optical property (eg, reflection change) different from the surrounding material may be pre-embossed, such as in a CD_R〇M or DVD. In the disc only. Or, the information layer or at least a part of it may be a recordable type (on which a mark can be recorded). An example of a recordable disc is a writable version of cd_r, cd_rw& DVD (such as DVD+RW) And a two-density writable disc called a Blu-ray Disc (10). The track 9 on a recordable type of record carrier is provided by a pre-embossed track structure (eg, pre-groove) provided during the manufacture of the blank record carrier. Figure ib is a cross section taken along the line b_b of the recordable type of record carrier u, wherein a transparent substrate 15 is provided with a recording layer "and a protective layer". The magnetic structure (for example) is made by - reading / The write head can be constructed during the scan to follow the pre-groove 14 of the magnetic 122320.doc 12 200818155. The pre-groove 14 can be implemented as an indentation or an evation, or can have a different material than the surrounding it. The optical properties of the material composition. The structure may also be formed by a sub-magnetism that periodically distributes the rules of the service signal. The record carrier may be intended to carry real-time information (such as video or video) or other information (such as computer data). Lc exhibition does not (can, record) one of the lateral positions of the magnetic position of the disc (also known as the wobble) - an example. The material change causes - the extra signal appears in the auxiliary detector 'for example' In the push-pull channel generated by the light-, /, mid-sub-m or part of the detector in the head of the scanning device, the oscillating system is, for example, frequency-modulated and the position information is encoded in the modulation. A comprehensive description of the first 4 technical swings in a writable cd system containing disc control information in this way can be found in us 4,9〇1,3〇〇 and a '6" The middle taste, the main thought, is intended to be reflected by the (sub)predator in a scan head, and the other lateral changes are known, such as magnetic hold, pre-existing magnetic pre-pits (preph) Other width variations. Figure 2 shows a method for self-using such as cd_r〇m according to the present invention. Example of dvd, record carrier 11# wearing C^RW, DVD+RW*BD. The device is provided with a member for scanning the magnetic carrier of the record carrier 11 and the like. The rotary unit of the record carrier 11 is used for scanning the read head 22 of the magnetic track and the read head control unit U for generating and positioning the radiation beam by the radiation beam 24. The head Μ = 6 known type optical system, For generating a spoke that produces light light (4) on one of the information layers that are guided through the optical element, the Koda field beam 24 is generated by a radiation source (eg, a laser diode). Head 122320.doc -13 - 200818155 further comprising (not shown): a focus actuator for focusing the beam onto the light spot on the track by moving the focus of the radiation beam 24 along the optical axis of the beam 23; and a sie (jge) and a circulatory actuator for positioning a radiant spot 23 in a direction transverse to the scanning direction of the track on the center of the magnet. For a disc-like medium, the lateral direction is referred to as the radial direction and the circulatory actuator is referred to as a radial actuator. The circulatory actuator can include a coil for radially moving an optical element or alternatively configured to change the angle of a reflective element. Similarly, the focus actuator can include a coil for moving the focus of the radiation beam 24. It should be noted that the focus and radial actuators can be constructed in the form of an actuator for positioning an optical element such as a lens and performing the functions of the actuators. The circumvention and focus actuators are driven by the actuator signal RA&FA from the read head control unit 25 in Fig. 3. In order to read 'the radiation reflected by the information layer is detected by a general type of spreader (eg, four quadrant diode) in the read head 22 to generate a coupling to a front end unit 31 to generate various scan signals. The signal (including a main detector signal (j 3 3 and the sub-detector signal 35 for the rail and focus). The main detector signal 3 3 is also called a high frequency (HF) signal. The detector signal 35 is coupled to the read head control unit 25 for controlling the focus actuators. Examples of the sub-detector signals are the focus error signal FEN and the radial error signal REN in Fig. 3, respectively. An example of a so-called focus/radial control loop that is not used to control radial and focus actuators. The main detector signal 33 is read by a common type including a decoding unit and an error correction unit and output unit. The processing unit 3 is processed to obtain the information 122320.doc -14-200818155. The decoding unit is used to process the high frequency signal into the main billet and the rank difference correction data included in the information. The error correction unit is used for Error correction of poor materials to find and correct data The read processing unit may include a memory buffer for temporarily storing the main data. Alternatively, the memory buffer may be a separate unit. Therefore, the reading means for reading information includes the rotating unit 21 The read head 22, the read head control unit 25, and the read processing unit 30. The pick-up head 22 is also referred to as an optical pickup unit 〇pu. The device includes a control unit 2〇 via a control line 26 (for example, The system bus is connected to other units in the device for controlling such units. The control unit 20 includes control circuitry for performing different control procedures and functions, such as a microprocessor, a program memory and an interface. It can also be implemented as a state machine in a logic circuit. Control unit 20 controls scanning (eg, for recording or reading information) and can be configured to receive instructions from a user or from a host computer. A recording member for recording information on a recordable or rewritable type of record carrier (for example, CD-R or CD-RW, or DVD+RW or BD) may be provided. In this case, the read head 22 adjusted For recording the indicia on a record carrier, the recording member cooperates with the head 22 and the front end unit 31 to generate a write radiation beam, and includes write processing for processing the input information to generate a write signal to drive the head 22. The components, the write processing components include an input unit 27, a formatter 28, and a modulator 29. To write information, the power of the radiation beam is controlled by the modulator 29 to produce optical comfort in the recording layer. Marking. The marking may be in any optically readable form, for example, in the form of a zone having a different reflection coefficient than that obtained by recording material such as dye 122320.doc -15-200818155 material, alloy or phase change material. Or in the form of a region having a polarization direction different from the surrounding material obtained by recording with a magneto-optical material. Writing poor information onto a disc/reading from a disc and formatting, error correction and channel encoding rules are well known in the art (for example) from CD and DVD systems. In the embodiment, the device is only A storage system, for example, a CD player for use with a computer. The control unit is configured to communicate with the processing unit in the host computer via a standardized interface (not shown). The digital data is directly interfaced to the formatter unit 28 and transmitted from the read processing unit 3 interface. In this case, the interface acts as an input unit and an output unit. In the embodiment, the device is configured as a separate unit, such as a video playback/recording device for use by consumers. The control unit 2 or the additional host control unit included in the device is configured to be directly controlled by the user. The device includes application data processing (e.g., audio and/or video processing) circuitry. The information presented to input unit 27 may include analog audio and/or video or digital uncompressed audio/video signals; in this case 'input unit 27' may include compression means for such signals. The read processing unit 3 can include a suitable audio and/or video decompression unit. In operation A, the read head control unit 25 applies a set of beam control parameters for controlling various aspects of the radiation beam. The first instance of a beam control parameter is about achieving a correct focus and is referred to as a focus offset. The focus bias is used to provide a s-round setpoint for the sub-detector signal and/or actuator signal that controls the focus. The focus offset can, for example, compensate for the positional deviation of the optical system or detector in the header 122320.doc -16-200818155. A similar example of a beam control parameter is referred to as radial being private and complementing & sweeping into the lateral position of the spot. - the other of the beam control parameters, the early tilt, or the tilt of the disc. Other beam control parameters may relate to the power of the beam, the timing of certain signal elements in the beam, and the like. In practice, beam control can be implemented (partially) in software or in other units, such as a laser rate rate of 7G or a signal pattern from a recording unit. Note that beam control parameters may require calibration or measurement during manufacturing of the device, or may be affected by aging, temperature, or other actual operating conditions during use of the device. The means for extracting information includes a disc error determination and correction unit 32 for determining the disc error and controlling the read head control unit 25. Disc disc deviation, disc imbalance, disc tilt, disc; difference in sheet thickness, birefringence disc, variable ρ/asymmetric disc and resulting in (for example) Other disc errors in which the quality (characteristics) of the high frequency signal of the disc changes. The disc discriminating discriminating and correcting unit 32 relies on the detected disc error to be controlled by adjusting the selected beam control parameter of the beacon head unit 25 to a calibration value obtained from a calibration private sequence. The head control unit 25 is read. This program can (e.g., ▲) jitter based on high frequency signals (HF jitter), which represents the time variation of this signal. For example, 'jitter can be presented as one of the time differences of the time variation of the digitized data of the equalizer of the decoding unit; as is known in the art, the jitter of the leading edge and the trailing edge of the signal is relative to the phase locked loop. The (PLL) clock is measured and normalized by the channel bit clock. A calibration procedure 122202.doc -17-200818155 can also measure the quality of the data retrieval based on the data error rate in the information processed by the reading processing unit 30. For example, a so-called PI BLER (internal parity block error rate) can be used as known from the Dvd system. Here, the information unit can be a single block or a block group. Pi Bler is also known as "pI Sum 8", which is a moving average sum of one of the internal parity errors on eight error correction code blocks. In the case of a CD disc, a corresponding parameter is called Cl BLER. It should be noted that in the following, the PI BLER may also represent a mountain BLER, a PI Sum 8 or a more general term data error rate. Of course, the above two quality parameters (jitter and data error rate) can only be measured in the presence of high frequency signals generated based on the marks in the track. However, the dependence of the radial error signal on the swing of the magnetic hold can be used at locations where there is no mark. Therefore, calibration based on radial error signals can be used during the optimum power control procedure for the recordable disc and during recording on the discs. The disc error determination and correction unit 32 monitors the scan of the record carrier, evaluates the quality parameters to identify different disc errors and, if necessary, takes corrective action. For this purpose, the disc error determination and correction unit 32 comprises the following subunits: - a monitoring unit 36 for selecting the area of the magnetic hold for monitoring the position of the radiation beam/〇 track and for checking for uncorrected The occurrence of a data error; the sampling unit 37' is configured to sample a data error rate and a jitter for a first predetermined number of times in each region into which the light beam enters, the jitter representing a high frequency 122320.doc • 18- 200818155 signal Time variation; - a calculation unit 38 for using a predetermined attack, a jitter, a pulse, a jitter, and a data error rate corresponding to the first The average value of the predetermined number of times is determined by the verification unit 39, which is used to check the area jitter in a situation where the area cup is different from the 〇Ο: his area jitter is different. And the area = the first pre-mei 'this other area jitter is different for any first j: field of the field' and the verification unit is used to request a control parameter in the condition that the first pre: i, piece is satisfied One of the data error rate based on the school actuation = ΓΓ control parameters For one of the jitter calibrations, the control parameters are actuating tilt or focus offset; a calibration unit 40 for presenting in the memory buffer where the occupancy is above a predetermined level or in the master data The status of an uncorrected data error = the required calibration is performed. The calibration includes different values for the control parameters. 1 such as the jitter or data error rate in the request and the decision control parameter are respectively - the response or the data error rate. a region adjustment value of a minimum value; and ▲Zhou Zhengdan TL 41 'is used to store the control area/number of the area D week for the scan area to be used during the scan area and set the control parameter to The area adjustment value. Therefore, the subunit of the disc error determination and correction unit 32 performs a method including the following steps: g) checking for the occurrence of uncorrected data errors; h) selecting the area of the track; i) monitoring the beam beam along the magnetic field Position of the rail; 122320.doc -19- 200818155 j) For each region into which the radiation beam in the selected region enters, a jitter and a feed error rate are sampled for a first predetermined number of times, the jitter indicating high The time variation of the signal; k) calculating a region jitter as the average value of the jitter corresponding to the first predetermined number of times; l) calculating the -region data error rate as the average of the word error rate corresponding to the first predetermined number of times; Ο (jm In the case where the area jitter is different from the jitter of any other area by the jitter of the area, the first pre-money piece of the area jitter and the area data error rate is checked, and the other area jitter is directed to any area of the first poem η) Under the condition that the first-predetermined condition is satisfied, the first error rate is requested. >, 隹4 / 戈人 in Bessie & quasi' otherwise request the control parameter based on the jitter-school/tanning parameter Actuator tilt or focus offset; == buffer occupancy rate is higher than - predetermined level or in the case of quasi-two: quasi-uncorrected data error, the requested school 2::: The different values of the control parameters are measured such as the requested motion or the Bellow error rate and the decision control parameter k k 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 对应 或 或 或 或 或 或Seeking successful calibration Value for scanning region ❹ Wei ... door zone adjustment value of the working parameter system. (4) Use and set the control parameters to the area adjustment. The disc tilting across the disc or the substrate layer side may be different. Although in the inner side of the disc to the outside of the disc, the 'disc error determination 122320.doc -20-200818155 and the correction unit 32 perform the (actuator) tilt calibration and the focus offset calibration on the inside of the disc at the time of starting and The optimum tilt and focus shift are set to achieve the minimum jitter point, but if the disc tilts or the substrate layer thickness changes during playback from the inside of the disc to the outside of the disc, the HF signal f (jitter and piBLER) may be induced. For both tilted discs and different substrate layer thicknesses, it is possible to measure the increase in HF jitter and/or PI BLER. 'The entire disc is divided into several areas from the inside to the outside by monitoring the single S36. For tilt or focus offset calibration, during scanning of these areas, ... calibrates in the area from the inside to the outside across the entire disc. In detail, if the measured jitter ratio in the region (k) is higher/lower (10) than the measured HF jitter in the region (k_2), and the calibration in the region k has not been performed before, it will be here. Calibration is performed in the area. The HF jitter and pi bler are monitored by the sampling unit 37 during playback. This is done by sampling the jitter and the value of ρι for each region into which the light beam enters. The number of sampling points is predetermined. For example, the value can be measured by the amount of time during the rotation of the record carrier by reading the equivalent value from (J - Debt register). Subsequently, the calculation unit 38 compares the different sampling points. The HF jitter and the measured value of the PI BLER are averaged. When the average I of the jitter of a particular region is different from the average jitter value measured in any other region by a given jitter difference i, The verification unit 39 checks the average jitter and the first-predetermined condition of the average PIBLER. The jitter difference less than 〇.5% may be caused by the measurement noise. The difference of more than 1% across the area usually means that the current system is set for this area. It is not optimal. Therefore, in one embodiment of the device, the given jitter difference is 1%. With regard to the first predetermined condition, experimental data 122320.doc 200818155 shows that the HF jitter is less than about 13% and ΡΙ BLER > The conditions of 〇 can be used to determine which type of adjustment should be applied. Other conditions can be applied depending on the particular system; the above conditions are mainly optimized for the DVD system ^ If this condition is met ''Certificate unit 39 is set to PIBLER-based Request for calibration, The request is based on the alignment jitter. Billion

、在正常條件τ，當記憶體、緩衝區之佔用帛高於對應於一 =執行-校準所需之時間的預定位準時，執行該校準。其 意謂可在不具有視訊/音訊回放之任何中斷的情況下進行 校準。舉例而言’嶋之佔用率位準可對應於約2秒之視訊 回放(進行引擎位準校準或調整的時間）。亦可在存在不可校 ，之資料誤差("讀取誤差")的狀況下執行校準，由於此(無 論如何）都會導致資料擷取之中斷。 圖4a及4b展示-由碟片誤差判定及校正單元似子單元 執行之程序的一實例。 在裝置之—實施例中，所請求校準係傾斜校準且在進行 此校準之後，重複以上量測及檢查且若滿足以上所述之相 關條件’則執行焦點偏移校準。換言之，若在傾斜設定之 後HF信號抖動差值仍高於1%，則在緩衝時間足夠長時將言主 求且啟動另一焦點偏移校準 丄 、、月 例而…斤需緩衝時間對 f角速度(CAV)、40Hz之则回放為1秒。關於傾斜校準 ^同條剌以衫料行基於彳W❹校準還是 基於PIBLER之焦點偏移校準。 =示一在基於抖動之焦點偏移之校準的狀況下由校 G及調整單元41執行之㈣的―㈣。亦Μ心 122320.doc -22- 200818155 基於H BLER之焦點偏移校準或基於抖動/ρι则 校準遵循相同程序。 、斜 、在裝置之一實施例中’碟片誤差判定及校正單元經調適 以在同-區域中執行每一控制參數之每一類型之校準不超 過-人。換吕之’若成功的話，在同-區域中執行一特定 校準僅-次。-成功校準係有可能發現一控制參數之最佳 區域調整值的校準。將此值儲存於記憶體中以供再次掃描 同一區域期間使用。 田 0 $ 了進—步最小化取抖動’在裝置之另-實施例中，碟 片誤差判定及校正單元經調適以在首先執行基於hf抖動之 致動器傾斜或焦點偏移校準之後執行一基於财抖動之徑向 偏移校準。換言之，重複基於抖動之校準，但由徑向偏移 代替致動器傾斜或焦點偏移。此可藉由以下過程而進行： 在不具有任何先決條件的情況下，簡單地重複校準單元糾 及調整單元41之動作，或藉由重複以上所述之整個程序， 〇 自僅取樣肝抖動且僅檢查關於抖動差值之條件，以便請求 徑向偏移校準。 圖6展示HF抖動及PI BLER對致動器傾斜之依賴性，該等 依賴性用於各別校準中。亦展示適於測得值之二階多項式。 圖7展不HF抖動對焦點偏移之依賴性。，，預設設定”及，，斜 坡下降/上升（ramp down/up)，，模式如用於圖5中者。 在I置之一實施例中，控制參數之區域調整值係簡單地 藉由取得應用於量測期間之控制參數之此值而判定，針對 此值量測HF抖動或PI BLER之一極小值。 122320.doc -23- 200818155 由於測得值㈣離散點，故取得具有該極小值之 '胃總是再現參數之最佳值。此可見於圖7中。因此, 實施例中’校準單元40經調適以藉由計算一適 兮測件值之函數之最小值來判定控制參數之區域調 =函數可為二階或高階多項式；二階多項式要求較簡單計 Γ Ο =置之-實施例中’碟片誤差判定及校正單元經調適 从便件在無高頻信號之狀況下， 由包含針對控制參數之 不冋值s測一徑向誤差信號及判 △ #J疋杈制參數之對應於該徑 σ决是偽號之一最佳值之 Λ 71正值的扠準代替所請求校 準，控向誤差信號係由讀取 執結構而產生。 & “磁執之預壓印磁 ^ 裝置可使用（例如）徑向誤差推挽信 破、基於所謂的經取樣循執之徑向誤差信號或此項技術中 已知之其他徑向誤差信號。 :圖8a及8b分別展示徑向誤差推挽對焦點偏移及致動器傾 斜之依賴性。 基於此依賴性，在裝置之—實施例中，校準單元經調適 以稭由計算-適於徑向誤差信號之測得值的函數之一最大 ㈣判定控制參數之區域調整值。此最大值界定徑向誤差 之最佳值。該函數可為二階或高階多項式，·二階多項 求較簡單計算。 、 圖9展示對HF信號之不對稱性之界定。量測HF信號之峰 值（A〗及A2)及一平均值（CALF)。z κ )不對稱性（亦被稱為β)經計 122320.doc -24- 200818155 算為（AHCALF-A2))與（Ai + (calf_a2))之比。 在裝置之L中’碟片誤差収及校正單元包含一 不對稱性及不平衡性偵測單元42，其用於： -在主資料中出現一未校正資料誤差的狀況下，取樣高頻信 就之不對稱性達第二預定次數； 將平均不對私性計算為高頻信號之不對稱性對應於第 二預定次數之平均值；及 Ο Ο ^平均㈣難處於-敎獨稱性範圍相狀況下，校 正南頻信號之不對稱性，否則測試記錄載體之不平衡性。 此有助於倘測越過碟片之可變HF信號不對稱性。可自解 碼益暫存③讀取Al、a2ACALF之值。在監視單以_測未 校正誤差(”讀取誤差")之後，取樣其達第二預定次數。舉例 而吕’在裝置之一實施例中，在碟片之一旋轉期間，取樣/ 計算不對稱性達16次。隨後，在第二預定數目上對不對稱 性求平均值。出於將碟片分類為不對稱性碟片之目的，將 平均計算之不對稱性與預定不對稱性範輯比對。對於不 同類型之碟片，此範圍^p么匕 乾固可此具有不同值。舉例而言，對於 则二、卿+驗碟片而言，將範圍設定至（_5%，15%)。、 遮一具有在此範圍外之不對稱性的碟片被認為係不 子稱性碟片，校正動作係必要的。 7展示-由不對稱性及不平衡性制單元42執行以用 於偵測HF信號不對稱性之程序的一實例。 二主：，可在更規則基礎上(例如’在進入碟片之一新區 或幻^查不對稱性，因此不僅僅在摘測，，讀取誤差”之後 122320.doc -25- 200818155 進行檢查不對稱性。 在裝置之一實施例中，不對稱 經調適以由1 e Α > 及不平衡性偵測單元42 ㈣以猎由針對徑向偏移之不同值 偏移之對應於抖動之一極小值的=動且判定徑向 ^ #,^ t 取{土值來校正高頻彳古号声 門：對稱性。再者，此最佳值可簡單地藉由取得在量；； 控制茶數之此值而判定，對於此值量咖抖動之 另一選項為使一函數(例如，二階 HF抖動之測得值且計算該函數之一最小值。 、 校正HF信號之不對稱性的 你a a、 σ 万式由不對稱性及不平 衡性偵測單元42藉由下列各項而進行·· -取樣抖動及資料誤差率達第三 料誤差率之對應平均值； _ 人數且叶鼻抖動及資 -檢查抖動及資料誤差率之平均值的一第二預定條件. Ο •在滿足第二狀條件的狀況下，針對高頻信號之-均衡哭 之不同設定量測資料誤差率且判定均衡器之對應於資料誤 ^率之-極小值的最佳設定’否則針對均衡器之不同設定 量測抖動且判定均衡器之對應於抖動之一極小值的最佳設 定。 第三預定次數可與第一預定次數相同，亦即，在碟片之 -旋轉期間25次。類似地，第二預定條件可與第一預定條 件相同，亦即，HF抖動低於13%且PIBLER大於13〇。 在裝置之另一實施例中，第二條件要求pibler>i3〇。在 此狀況下’僅取樣資料誤差率係足夠的。 圖11展示一量測且校正HF信號不對稱性之程序的一實 122320.doc -26- 200818155 例。 Ο ϋ 在DVD碟片之狀況下，可如下進行對均衡器之最佳設定 之判定。若具有適應性削波位準之所謂的限制均衡器用以 放大HF信號分量（如3T)，則關閉限制均衡器。隨後，檢查 册高通遽波器（HFHPF)之設定。若HF高通遽波器截止頻率 高於14T之頻率之約1/1〇，則將其設定至14丁之頻率之 Τ係磁執中m之長度的量度。對於DVD 系統而言，14T係最長標記且3T係最短標記。對於正常 HPF設計而言，將HF聊截止頻率設定至—值，該值盡可 能高且同時不會導致過多相位失真。進行此以便濾出由碟 片刮痕等引起之較低頻率雜訊。對於不對稱性碟片而言， 應將由HFHPF引人之相位失真減小至—盡可能小之位準。 因此，若必要的話，將HF卿截止頻率校正至Μ之頻率 之1/10。在下—步驟中’如以上所述取樣HF抖動及/或ΡΙ 接著，取決於第二條件，執行基於抖動或基於PI BLER之均衡器設定調整。此等調整係藉由改變如圖12中所 示之均衡器之增益支流（tap)A及/或B而進行。 圖13:示抖動對均衡器設定之浴缸型依賴性的一實例。 一根據第二預定條件’不對稱性及不平衡性校正單元42可 經修=藉由計算—適於抖動或資料誤差率之測得值的函 最J值來判疋均衡器之最佳設定。簡單函數係二階 多項式。 有才即使在取佳化均衡器設定以加強信號之3τ分量 之後’不對稱性仍過高’導致持久”讀取誤差t，且/或在所允 122320.doc -27· 200818155 命祀圍外。在此狀況下，可執行類似徑向偏移校準及/或傾 斜校準之其他調整以便進一步減小HF信號之不對稱性。 Ο L) 另犬員型之碟片誤差係不平衡性碟片。由大多數不平衡 :碟假定低於10 g之不平衡性)引起之干擾可由飼服控 制迴路报好地補償。對於（例如）由使用者自己置於碑片上之 貼紙/標認引起的一些非常高之不平衡性碟片而言，正常飼 ==不能處理其。干擾可能如此高以致於其可能影 執效能，引起讀取問題或誤差。處理此種誤差之 放般方式為使碟機下自旋（spin down)且以較低速度進行回 =置之一實施例中’不對稱性及不平衡性偵測單元a 、-调適以藉由下列各項來測試記錄載體之不平衡性. -在預定轉數期間取樣一徑向積分器； 之將平均向積分器計算為徑向積分器對應於預定轉數 之將- 疋褥頻率之平方的比； •在不平衡性指 下.減小記錄載趙之不平衡性範圍外的狀況 差為=轉於數其他原因…碟“平衡性引起之讀取誤 輸出達# ^ Θ (例如’在—轉内）量測徑向積分器（峰間） 出平均值。— 將碟片债測為古：平方的比。若其在預定範圍/值外，則 、 度不平衡碟片。因此，啟動下自旋以降低 122320.doc -28- 200818155 回放速度之動作。 由不對稱性及不平衡性侦測單元42執行以用 於測_载體之不平衡性之程序的一實例。 料：：！:!片誤差由所謂的雙折射碟片引起。雙折射係材 ’ s ’其使具有不同偏振之入射光波被材料不同地 折射。對於雙折射碟片而古，味—上 ^ " HF仏號之振幅自碟片内側至 Ο u 業片外側大大地增加，以使得解碼器W中之辦 制(HFAGC)不再有效，其導致解碼器路徑中HFAGC: ，之飽和。此問題之解決方案為在播放時監視hf厦增 皿田HF AGC增盈罪近可調界限時，進行信號預處理增益 之增大/減小以便避免由於HF織增益太靠近界限之飽 和。在進行PLL鎖定檢查時一直監視HF信號。 在裝置之另一實施例中，當處理高頻信號包含高頻信號 之一第一及一第二級放大，第二級增益被自動地控制於一 範圍内時，碟片誤差判定及校正單元經調適用於： -監視第二級增益之值； •依賴第二級增益之測得值而調整第一級增益以便使第二 級增益遠離該範圍之界限。 圖15展示一由碟片誤差判定及校正單元執行以校正雙折 射之效應的程序之一實例。前增益（a)係指由前端單元3丨（前 1C)執行的HF信號之前信號處理DC增益。hf AGC增益 (age—gain)係指解碼器中之HF AGC區塊。 圖16展示前1C及解碼器1(：之相關部分之布局的一實例。 在裝置之一實施例中，碟片誤差判定及校正單元32經調 122320.doc -29- 200818155 適以執行一如圖17中所示之程序。 在液置之一實施例中，碑片 羔 呆月#爰判疋及杈正單元32或直 4何邛/刀包括於控制單元2〇中。 /、 :誤差判定及校正單元32或内部所包含之任何子單元 可在韌體中實施。 』于早兀 以上關於裝置之不 單元32及其子單元 根據本發明<方法之實施例對應於如 同實施例所述的由碟片誤差判定及校正 執行之功能/程序。In the normal condition τ, the calibration is performed when the memory/buffer occupancy 帛 is higher than a predetermined level corresponding to the time required for a = execution-calibration. It means that it can be calibrated without any interruption in video/audio playback. For example, the occupancy level of 嶋 can correspond to about 2 seconds of video playback (time to perform engine level calibration or adjustment). Calibration can also be performed in the presence of uncorrectable data errors ("reading errors"), as this (in any case) can lead to interruptions in data acquisition. Figures 4a and 4b show an example of a program executed by a disc error determination and correction unit-like subunit. In the apparatus-embodiment, the requested calibration is a tilt calibration and after the calibration is performed, the above measurements and checks are repeated and if the relevant conditions described above are met, the focus offset calibration is performed. In other words, if the HF signal jitter difference is still higher than 1% after the tilt setting, then when the buffer time is long enough, the other focus offset calibration will be started and the monthly example will be used. (CAV), 40Hz playback is 1 second. About tilt calibration ^The same strip is based on 彳W❹ calibration or PIBLER based focus offset calibration. = "(4)" (4) executed by the calibration G and the adjustment unit 41 in the case of calibration based on the focus offset of the jitter. Also worry 122320.doc -22- 200818155 Based on H BLER focus offset calibration or based on jitter / ρι calibration follows the same procedure. The slant, in one embodiment of the apparatus, the disc error determination and correction unit is adapted to perform calibration of each type of each control parameter in the same-area no more than - human. If it is successful, a specific calibration is performed only in the same-area. - A successful calibration system may find a calibration of the optimal zone adjustment value for a control parameter. Store this value in memory for use during the same area scan again. Field 0. In the step of minimizing jitter, in another embodiment of the apparatus, the disc error determination and correction unit is adapted to perform a first after performing an hf-jitter-based actuator tilt or focus offset calibration. Radial offset calibration based on financial jitter. In other words, the jitter based calibration is repeated, but the actuator tilt or focus offset is replaced by a radial offset. This can be done by the following process: simply repeating the action of the calibration unit correction adjustment unit 41 without any preconditions, or by repeating the entire procedure described above, only sampling the liver jitter and Only the conditions regarding the jitter difference are checked to request a radial offset calibration. Figure 6 shows the dependence of HF jitter and PI BLER on actuator tilt, which are used in separate calibrations. Second-order polynomials suitable for the measured values are also shown. Figure 7 shows the dependence of HF jitter on focus shift. , the default setting "and, ramp down / up," mode as used in Figure 5. In one embodiment of the I set, the area adjustment value of the control parameter is simply by The value of the control parameter applied during the measurement period is determined, and the minimum value of HF jitter or PI BLER is measured for this value. 122320.doc -23- 200818155 Since the measured value (4) is discrete, the minimum is obtained. The value of the stomach always reproduces the optimum value of the parameter. This can be seen in Figure 7. Thus, in the embodiment the 'calibration unit 40 is adapted to determine the control parameter by calculating the minimum value of a function of the appropriate value of the workpiece. The regional adjustment = function can be a second-order or higher-order polynomial; the second-order polynomial requires a simpler calculation Γ 置 = set - in the embodiment, the disc error determination and correction unit is adapted from the condition of the high-frequency signal without Including the non-precision value s for the control parameter, the measured radial error signal and the judgment Δ#J疋杈 parameter corresponding to the diameter σ is determined to be one of the pseudo-values Λ 71 positive value of the cross-precision instead of the request Calibration, the steering error signal is read by the structure &"Magnetic pre-imprinted magnetic devices can use, for example, radial error push-pull breaks, based on so-called sampled cyclic radial error signals or other radial errors known in the art. signal. Figures 8a and 8b show the dependence of the radial error push-pull on the focus offset and the actuator tilt, respectively. Based on this dependency, in the device-embodiment, the calibration unit is adapted to calculate one of the functions of the measured value of the radial error signal (4) to determine the regional adjustment value of the control parameter. This maximum defines the optimum value for the radial error. This function can be a second-order or higher-order polynomial, and a second-order multinomial is a simpler calculation. Figure 9 shows the definition of the asymmetry of the HF signal. The peak values (A and A2) and the average value (CALF) of the HF signal are measured. z κ ) Asymmetry (also known as β) is calculated as 122320.doc -24- 200818155 is calculated as the ratio of (AHCALF-A2)) to (Ai + (calf_a2)). In the device L, the 'disc error acceptance correction unit includes an asymmetry and imbalance detection unit 42 for: - sampling a high frequency signal in the presence of an uncorrected data error in the main data The asymmetry is up to a second predetermined number of times; the average non-privacy is calculated as the asymmetry of the high frequency signal corresponding to the average of the second predetermined number of times; and Ο Ο ^ averaging (four) is difficult to be in the state of the 敎 性 范围 范围Correct the asymmetry of the south frequency signal, otherwise test the imbalance of the record carrier. This helps to determine the asymmetry of the variable HF signal across the disc. The value of Al and a2ACALF can be read by self-decoding. After the monitoring unit measures the uncorrected error ("read error"), it is sampled for a second predetermined number of times. For example, in one embodiment of the device, during one rotation of the disc, sampling/calculation The asymmetry is up to 16. Then, the asymmetry is averaged over the second predetermined number. For the purpose of classifying the disc as an asymmetrical disc, the asymmetry of the average calculation and the predetermined asymmetry For the different types of discs, this range can be different. For example, for the second, Qing + inspection disc, set the range to (_5%, 15%). A disc having an asymmetry outside this range is considered to be a non-negative disc, and a corrective action is necessary. 7 Display - performed by the asymmetry and imbalance unit 42 An example of a program for detecting the asymmetry of HF signals. Two masters: can be based on a more regular basis (for example, 'in a new area of a disc or asymmetry, so not only in the test ,, read error" after 122320.doc -25- 200818155 check for asymmetry In one embodiment of the apparatus, the asymmetry is adapted to be offset by a value corresponding to one of the jitters by the 1 e Α > and the imbalance detecting unit 42 (4). = move and determine the radial ^ #, ^ t take { soil value to correct the high frequency 彳 ancient glottal: symmetry. Again, this optimal value can be simply obtained by the amount;; control the value of the tea Judging, another option for this value jitter is to make a function (for example, the measured value of the second-order HF jitter and calculate the minimum value of the function.) Correcting the asymmetry of the HF signal, you aa, σ 10,000 The asymmetry and imbalance detecting unit 42 performs the following items by the following items: - sampling jitter and data error rate up to the corresponding average value of the third material error rate; _ number of people and leaf nose jitter and capital - inspection a second predetermined condition of the average value of the jitter and the data error rate. Ο • Under the condition that the second condition is satisfied, the data error rate is set for the different balance of the high frequency signal and the equalizer is determined. Data error rate - the best setting for the minimum value 'otherwise The different settings of the device measure the jitter and determine the optimal setting of the equalizer corresponding to one of the minimum values of the jitter. The third predetermined number of times may be the same as the first predetermined number of times, that is, 25 times during the rotation of the disc. The second predetermined condition may be the same as the first predetermined condition, that is, the HF jitter is less than 13% and the PIBLER is greater than 13. In another embodiment of the apparatus, the second condition requires pibler>i3〇. The error rate of the sample data only is sufficient. Figure 11 shows a real program of the measurement and correction of the asymmetry of the HF signal. 122320.doc -26- 200818155. Ο ϋ In the case of a DVD disc, it can be as follows The determination of the optimal setting of the equalizer is performed. If a so-called limiting equalizer with an adaptive clipping level is used to amplify the HF signal component (eg 3T), the limiting equalizer is turned off. Subsequently, check the settings of the Qualcomm Chopper (HFHPF). If the HF high-pass chopper cut-off frequency is higher than about 1/1 频率 of the frequency of 14T, it is set to a measure of the length of m in the 磁 series of magnetic frequencies. For DVD systems, the 14T is the longest mark and the 3T is the shortest mark. For a normal HPF design, set the HF talk cutoff frequency to a value that is as high as possible without causing excessive phase distortion. This is done to filter out lower frequency noise caused by disc scratches and the like. For asymmetrical discs, the phase distortion introduced by HFHPF should be reduced to the smallest possible level. Therefore, if necessary, the HF-clear cutoff frequency is corrected to 1/10 of the frequency of Μ. In the next step, the HF jitter and/or 取样 are sampled as described above, and then the jitter based or PI BLER based equalizer setting adjustment is performed depending on the second condition. These adjustments are made by changing the gain taps A and/or B of the equalizer as shown in FIG. Figure 13: An example showing the bath-type dependence of jitter on equalizer settings. According to the second predetermined condition, the asymmetry and imbalance correction unit 42 can correct the optimum setting of the equalizer by calculating the value of the J value of the measured value suitable for the jitter or the data error rate. . Simple functions are second-order polynomials. There is a long-term "reading error t" even after taking the optimisation equalizer setting to enhance the 3τ component of the signal, resulting in a persistent "read error t" and/or outside the allowable 122320.doc -27· 200818155 In this case, other adjustments like radial offset calibration and/or tilt calibration can be performed to further reduce the asymmetry of the HF signal. Ο L) Another dog-type disc error is an unbalanced disc. The interference caused by most imbalances: the disc is assumed to be less than 10 g imbalance can be compensated for by the feeding control loop. For example, caused by the sticker/marking placed on the tablet by the user himself. For some very high imbalanced discs, normal feeding == can't handle it. The interference may be so high that it may affect the performance, causing reading problems or errors. The way to handle such errors is to make the disc Spin down and perform at a lower speed. In one embodiment, the 'asymmetry and imbalance detection unit a' is adapted to test the record carrier by the following: Balanced. - Sampling a path during a predetermined number of revolutions The integrator; the average is calculated to the integrator as the ratio of the square of the frequency of the radial integrator corresponding to the predetermined number of revolutions; • under the imbalance, reducing the imbalance of the recorded load Zhao The difference in status is = the number of other reasons... The disc "balance read error output reaches # ^ Θ (for example, 'in-to-turn) measurement radial integrator (peak) average. — Measure the disc debt as an ancient: squared ratio. If it is outside the predetermined range/value, the disc is unbalanced. Therefore, the spin is activated to reduce the playback speed of 122320.doc -28- 200818155. An example of a procedure performed by the asymmetry and imbalance detecting unit 42 for measuring the imbalance of the carrier. material::! :! The chip error is caused by a so-called birefringence disc. The birefringent material 's' causes the incident light waves having different polarizations to be refracted differently by the material. For the birefringent disc, the amplitude of the scent of the HF 大大 is greatly increased from the inside of the disc to the outside of the Ο u, so that the processing in the decoder W (HFAGC) is no longer effective. Causes the saturation of HFAGC: in the decoder path. The solution to this problem is to increase/decrease the signal pre-processing gain when monitoring the near-adjustable limit of the HF AGC gains of the HF AGC during playback to avoid saturation due to the HF weave gain being too close to the limit. The HF signal is always monitored while the PLL lock check is in progress. In another embodiment of the apparatus, the disc error determination and correction unit is configured when the processed high frequency signal includes one of the high frequency signals, the first and second stage amplification, and the second stage gain is automatically controlled within a range. The tuning applies to: - monitoring the value of the second stage gain; • adjusting the first stage gain depending on the measured value of the second stage gain so that the second stage gain is far from the limit of the range. Figure 15 shows an example of a procedure performed by the disc error determination and correction unit to correct the effect of the birefringence. The front gain (a) refers to the signal processing DC gain before the HF signal performed by the front end unit 3 丨 (front 1C). Hf AGC gain (age-gain) refers to the HF AGC block in the decoder. Figure 16 shows an example of the layout of the relevant portion of the former 1C and decoder 1 (in one embodiment of the apparatus, the disc error determination and correction unit 32 is adapted to perform 122320.doc -29-200818155 as appropriate The procedure shown in Fig. 17. In one embodiment of the liquid placement, the tablet is in the form of a unit or a straight unit 32 or a straight unit. The determination and correction unit 32 or any subunits contained therein may be implemented in the firmware. The above-described unit 32 and its subunits according to the present invention are corresponding to the embodiment as in the embodiment. The functions/procedures performed by disc error determination and correction.

詳言之： 控制參數 在方法之一實施例中， 之每一類型之校準僅一次 在同一區域中請求每一 在方法之一實施例 由焦點偏移代替致動 j)至p)之步驟。 中，控制參數為致動器傾斜且其後在 器傾斜的情況下於同一區域内重複自 Ο 之：：法：一實施例中，所請求校準係控制參數基於抖動 準且其後在由徑向偏移代替控制參數的情況下於同一 區域内重複至少步驟0)及P)。 準====高頻信號之時間變化之標 第一預定條件要求區域抖動大體 是率大體上大於每一資訊單位 在方法之一實施例中， 上低於13%且區域資料誤 130個資料誤差。 在方法之一實施例中， 算一適於如請求中之抖動 控制參數之區域調整值係藉由計 或資料誤差率之測得值的函數之 122320.doc -30 - 200818155 一最小值而加以判定。 在方法之一實施例中，在無高頻信號之狀況下，由一包 含針對控制參數之不同值量測一徑向誤差信號及判定控制 蒼數之對應於該徑向誤差信號之一最佳值的區域調整值的 才父準代替所請求校準，徑向誤差信號係由讀取頭基於一指 示磁軌之預壓印磁執結構而產生。 在方法之一實施例中，徑向誤差信號為一徑向誤差推挽 信號。 Ο Ο 在方法之一實施例中，控制參數之區域調整值藉由計算 一適於測得值之函數的一最大值而判定，該最大值界定徑 向誤差信號之最佳值。 在方法之Κ鼽例中，在主資料中出現一未校正資料誤 差的狀況下，執行下列步驟： -取樣高頻信號之不對稱性達第二預定次數； -將-平均不對稱性計算為高頻信號之不對稱性對應於第 二預定次數之平均值；及 -在平均不對稱性處於— 一 、預疋不對稱性範圍外的狀況下，校 正同頻彳吕號之不對猶^1 否則測試記錄載體之不平衡性。 在方法之一實施例中，访Τ 才又正向頻信號之不對稱性包含針 對一徑向偏移之不同值量 αι e j值里測抖動及判定徑向偏移之對應於 抖動之一極小值的一最佳值。 在方法之一實施例中 於抖動之測得值的函數 在方法之一實施例中 ’後向偏移之最佳值藉由計算一適 之一最小值而判定。 ’才父正高頻信號之不對稱性包含下 122320.doc -31 - 200818155 列步驟：In particular: Control Parameters In one embodiment of the method, each type of calibration is requested only once in the same region. Each of the methods in the method is replaced by a focus offset instead of actuation j) to p). The control parameter is that the actuator is tilted and then repeated in the same region with the device tilted:: Method: In one embodiment, the requested calibration system control parameter is based on the jitter criterion and then in the path At least steps 0) and P) are repeated in the same region with the offset instead of the control parameter. Quasi ==== The time-varying condition of the high-frequency signal The first predetermined condition requires that the area jitter is generally greater than the ratio of each information unit in one embodiment of the method, less than 13% above and 130 pieces of regional data error error. In one embodiment of the method, calculating a region adjustment value suitable for the jitter control parameter as in the request is performed by a function of a measured value of the data error rate or a value of 122320.doc -30 - 200818155 determination. In one embodiment of the method, in the absence of a high frequency signal, measuring one radial error signal and determining the control number of one of the radial error signals is determined by a different value for the control parameter. The value of the zone adjustment value replaces the requested calibration, and the radial error signal is generated by the readhead based on a pre-embossed magnet structure of the indicated track. In one embodiment of the method, the radial error signal is a radial error push-pull signal.之一 Ο In one embodiment of the method, the region adjustment value of the control parameter is determined by calculating a maximum value suitable for the function of the measured value, the maximum value defining the optimum value of the radial error signal. In the example of the method, in the case where an uncorrected data error occurs in the main data, the following steps are performed: - sampling the asymmetry of the high frequency signal for a second predetermined number of times; - calculating the average asymmetry as The asymmetry of the high frequency signal corresponds to the average of the second predetermined number of times; and - in the case where the average asymmetry is outside the range of the asymmetry, the correcting of the same frequency is not correct. Otherwise test the imbalance of the record carrier. In one embodiment of the method, the asymmetry of the forward-frequency signal includes a different value for the radial offset, and the determination of the radial offset corresponds to one of the jitters. An optimal value for the value. In one embodiment of the method, the value of the measured value of the jitter is determined in one embodiment of the method. The optimum value of the backward offset is determined by calculating an appropriate minimum value. The asymmetry of the positive high frequency signal is included in the following 122320.doc -31 - 200818155 column steps:

-取樣抖動及資料誤差率達第三 A 料誤差率之對應平均值； 疋人數且計算抖動及資 -檢查抖動及資料誤差率之平均值的 -在滿足第二預定條件的狀況下:―預定條件； 之不同設定量剛資料誤差率 ；7頻信號之-均衡器 差率之-極小值的最佳1 Μ “之對應於資料誤 Ο Ο 量測抖動且判定均衡器之對應 十句衡裔之不同設定 定。 勒之一極小值的最佳設 在方法之一實施例中，均衡器 算一適於抖動或資料誤差率之測2設定相應地藉由計 判定。 、值的函數之一最小值而 2Γ之—實施例中，函數為二階多項式。 列步驟·· /、栽體之不平衡性包含下 取樣—徑向積分輯第四衫次數； 將平均徑向積分器計算為彳<τ<命接 次數之平均值； ”、、工°積y刀器對應於第四預定 將不平衡性指示器計算為平Θ 之一旋轉頻率之平方的比；為千均k向積分器與記錄載體 -在不平衡性指示器處於— 下，減小記錄载體之旋轉頻率。又不平衡性範圍外的狀況 第一及中，處理高頻信號包含高頻信號之一 弟一級放大，箆-如俗、…丄 弟一、、及增盈被自動地控制於一範圍 122320.doc -32- 200818155 内，方法包含下列步驟： -監視第二級增益之值； •依賴第二級增益之測得值而調整第一級增益以便使第二 級增益遠離該範圍之界限。 . 一根據本發明的供一讀取裝置自一碟片狀光學記錄載體 擷取資財使用之電腦程式的+同實施例係操作以在由讀 取裝置執行該電腦程式時使該讀取裝置之一處理器，且詳 5之控制單兀2〇，執行如以上關於以上所呈現之裝置及/或 方法之實施例所述的功能/程序。 儘官已關於本發明之較佳實施例描述了本發明，但應理 解的疋，此等貫施例並非限制性實例。因此，在不脫離如 申睛專利範圍及實施例所界定之本發明之範疇的情況下， 各種修改對於熟習此項技術者而言可變得顯而易見。另 外，本發明處於每個新穎特徵或以上所述之特徵之組合 中。注意，本發明可借助於一執行一電腦程式之通用處理 Q 态或藉由專用硬體或藉由兩者之組合而實施，且在本文件 中，詞’’包含"並不排除不同於所列出之元件或步驟的元件 或步驟之存在，且在一元件前之詞”一”（a/an)並不排除複數 ' 個該等元件之存在，任何參考符號並不限制申請專利範圍 - 之範蜂，，，構件，，可由單一項目或複數項目表示，若干”構 件”可由同一硬體項目表示。 【圖式簡單說明】 .圖la展示一碟片狀光學記錄載體之一實例。 圖lb展示記錄載體之所截取之橫截面。 122320.doc -33- 200818155 圖1 c展示磁執之一擺動之一實例。 圖2展示一根據本發明之讀取裝置。 圖3展示用於控制徑向及焦點致動器之焦點/徑向控制迴 路的一實例。 圖4a及4b展示一根據本發明的由碟片誤差判定及校正單 元32執行之程序的一實例。 Ο ί) 圖5展不一根據本發明的由校準單元⑽及調整單元々ί執 行之程序的一實例。 圖6展不HF抖動及PI BLER對致動器傾斜之依賴性。 圖7展示HF抖動對焦點偏移之依賴性。 圖8a展示徑向誤差推挽信號對焦點偏移之依賴性。 圖8b展示徑向誤差推挽信號對致動器傾斜之依賴性。 圖9展示對HF信號之不對稱性之界定。 圖1〇展示—根據本發明的藉由㈣稱性及不平衡性單元 42來量測HF信號之不對稱性的料之-實例。 :展『根據本發明的量測且校正HF信號不對稱性之 程序的一實例。 圖12展示—數位均衡器之一實例。 圖13展示抖動對均 — 例。 ^衡态玟疋之浴缸型依賴性的之一實 圖1 4展示一根擔太 元42執行之用於測試:二的由不對稱性及不繼 例。 飞记錄載體之不平衡性的程序之一實 圖1 5展不一根搪士 ^ 受明的校正雙折射之效應之程序的一 122320.doc -34- 200818155 實例。 圖16展示讀取處理單元3G及前端單 、 圖的一實例。 之 σΡ分之方塊 圖1 7展示一根據本發明 執行之程序的_實例。 碟“差料及校正單元32 不同圖式中之對應元件具有相同參考數字/符號。 【主要元件符號說明】 Ο ϋ 9 磁執 10 中心孔 11 碟片狀記錄載體 14 預刻溝槽 15 透明基板 16 記錄層 17 保護層 20 控制單元/控制構件 21 旋轉單元/讀取構件 22 讀取頭/讀取構件 23 輻射光點 24 輻射束 25 讀取頭控制單元/讀 26 控制線 27 輸入單元 28 格式器 29 調變器 122320.doc •35- 200818155 30 31 讀取處理單元/解碼單元/誤差校正單 元/讀取構件 前端單元 32 33 * 35 36 〇 37 38 39 40 41 42 A u 碟片誤差判定及校正單元/碟片誤差 判定及校正構件 主摘測器信號 子偵測器信號 監視單/碟片誤差判定及校正構件 取樣單7L /碟片誤差判定及校正構件 汁异單元/碟片誤差判定及校正構件 驗證單元/碟片誤差判定及校正構件 杈準單兀/碟片誤差判定及校正構件 調整單元/碟片誤差判定及校正構件 不對％性及不平衡性偵測單元/碟片 誤差判定及校正構件 增益支流 Αι 峰值 A2 峰值 B 增益支流 CALF FA FEN RA REN HF信號之平岣值 致動器信號 聚焦誤差信號 致動器信號 徑向誤差信號 122320.doc -36-- sampling jitter and data error rate up to the corresponding average of the third A material error rate; 疋 number and calculation of jitter and capital - check jitter and the average of the data error rate - under the condition that the second predetermined condition is met: - predetermined Condition; different setting amount just data error rate; 7-frequency signal-equalizer difference-minimum value 1 Μ "The corresponding data error Ο Measure the jitter and determine the equivalent of the equalizer The setting of one of the minimum values is preferably set in one embodiment of the method, and the equalizer calculates a measurement suitable for the jitter or the data error rate, and the corresponding setting is determined by the calculation. The minimum value is 2Γ—in the embodiment, the function is a second-order polynomial. The column step··, the imbalance of the carrier includes the downsampling—the radial integration of the fourth number of times; the average radial integrator is calculated as 彳<;τ<the average of the number of hits; ",, the ratio of the y-knife corresponds to the fourth predetermined ratio of the unbalanced indicator calculated as the square of one of the rotational frequencies; With record carrier - in imbalance It is in the - next, reducing the rotational frequency of the record carrier. In the first and the middle of the unbalanced range, the processing of the high-frequency signal includes one of the high-frequency signals, and the first-order amplification, 箆-如俗,...丄弟一,, and the increase is automatically controlled to a range 122320. Doc-32-200818155, the method comprises the steps of: - monitoring the value of the second stage gain; • adjusting the first stage gain depending on the measured value of the second stage gain so that the second stage gain is far from the limit of the range. A method according to the present invention for a computer program for obtaining money from a disc-shaped optical record carrier is operated to cause the reading device to be executed when the computer program is executed by the reading device A processor, and the control unit of detail 5, performs the functions/programs as described above with respect to the embodiments of the apparatus and/or method presented above. The present invention has been described in terms of a preferred embodiment of the invention, but it should be understood that such embodiments are not limiting. Therefore, various modifications may become apparent to those skilled in the art without departing from the scope of the invention. In addition, the invention resides in each novel feature or combination of features described above. Note that the present invention can be implemented by performing a general processing Q state of a computer program or by dedicated hardware or by a combination of the two, and in the present document, the word 'includes' does not exclude different The existence of the elements or steps of the elements or steps listed, and the word "a" or "a" or "a" or "an" - The van, ,, component, can be represented by a single item or a plurality of items, and several "components" can be represented by the same hardware item. BRIEF DESCRIPTION OF THE DRAWINGS Figure la shows an example of a disc-shaped optical record carrier. Figure lb shows a cross section of the record carrier taken. 122320.doc -33- 200818155 Figure 1c shows an example of one of the magnetic swings. Figure 2 shows a reading device in accordance with the present invention. Figure 3 shows an example of a focus/radial control loop for controlling radial and focus actuators. Figures 4a and 4b show an example of a program executed by the disc error determination and correction unit 32 in accordance with the present invention. Figure 5 shows an example of a program executed by the calibration unit (10) and the adjustment unit 根据ί according to the present invention. Figure 6 shows the dependence of HF jitter and PI BLER on actuator tilt. Figure 7 shows the dependence of HF jitter on focus shift. Figure 8a shows the dependence of the radial error push-pull signal on the focus offset. Figure 8b shows the dependence of the radial error push-pull signal on the actuator tilt. Figure 9 shows the definition of the asymmetry of the HF signal. Figure 1A shows an example of a material for measuring the asymmetry of an HF signal by means of a (iv) weighing and unbalance unit 42 in accordance with the present invention. An example of a procedure for measuring and correcting the asymmetry of HF signals in accordance with the present invention. Figure 12 shows an example of a digital equalizer. Figure 13 shows the jitter pair averages. ^ One of the bath-type dependencies of the state of 衡 实 Figure 1 4 shows a damper 42 performed for testing: asymmetry and non-regression. One of the procedures for the unbalance of the flying record carrier is shown in Fig. 15. A program of the effect of correcting the effect of birefringence is 122320.doc -34-200818155. Fig. 16 shows an example of the read processing unit 3G and the front end single figure. Block of σ 图 图 Figure 1 7 shows an example of a program executed in accordance with the present invention. The corresponding components in the different patterns of the disc "Differential Material and Correction Unit 32" have the same reference numerals/symbols. [Description of main component symbols] Ο ϋ 9 Magnetic Holder 10 Center hole 11 Disc-shaped record carrier 14 Pre-groove 15 Transparent substrate 16 Recording layer 17 Protective layer 20 Control unit / Control member 21 Rotating unit / Reading member 22 Reading head / Reading member 23 Radiation spot 24 Radiation beam 25 Read head Control unit / Read 26 Control line 27 Input unit 28 Formatter 29 Modulator 122320.doc •35- 200818155 30 31 Read processing unit/decoding unit/error correction unit/reading unit front unit 32 33 * 35 36 〇37 38 39 40 41 42 A u Disc error determination and correction Unit/disc error determination and correction component main digest signal sub-detector signal monitoring single/disc error determination and correction component sampling list 7L/disc error determination and correction component juice different unit/disc error determination and correction Component verification unit/disc error determination and correction component alignment/disc error determination and correction member adjustment unit/disc error determination and correction component error % And unbalance detection unit/disc error determination and correction component gain tributary Αι peak A2 peak B gain tributary CALF FA FEN RA REN HF signal flat value actuator signal focus error signal actuator signal radial error signal 122320.doc -36-

Claims (1)

200818155 十、申請專利範園： 1 · 一種自一碟片狀光學記錄載體擷取資訊之方法，該資訊 由沿該記錄载體上之一大體上螺旋形之磁軌的光學可讀 &5己表示’組織成資訊單位之該資訊包含主資料及誤差 枚正資料，該方法包含下列步驟： -紋轉该記錄載體，且藉由一由一讀取頭產生之輻射 束來掃描該磁執； Ο G -使用表不控制參數之信號來控制該輻射束之定位，· 一藉由該讀取頭基於該等標記而產生一高頻信號； -將該高頻信號處理成該主資料及該誤差校正資料； -使用該誤差校正資料來發現並校正資料誤差； 將名主貝料過渡性地儲存於一記憶體緩衝區申； -檢查未校正資料誤差之出現； - 選擇該磁軌之區域； 血肌砀顆射采沿該磁執之位置； 、-對於該等選定區域中之該輻射束所進入的每一區 域’取樣-，動及—f料誤差率達m欠數，該 抖動表示該高頻信號之時間變化； -將-區域抖動計算為該抖動對應於該第一預定次 數之平均值； • 將一區域資料誤#盎 < 曾& 差革3十异為該資料誤差率對應於 邊弟一預定次數之平均值； -在該區域抖動以一預定 厂丄 頂疋科動差值不同於任何豆他 區域抖動的狀況下，檢查該 /、 匕孕枓動及該區域資料誤差 122320.doc 200818155 該其他區域抖動係針對任何先 率之一第一預定條件 知描之區域而計算； -隹滿足該第一預定條件的狀況下，f主龙一 基於該資料誤差率 s、卫彳苓數 „4ί ^ 杈準，否則請求該控制參數美於 ::校準，該控制參數係-致動器傾斜或點 "在該記憶體緩衝區之佔、玄古 ，、牙下…一— 之佔用率南於-預定位準的狀 Ο 〇 〆下或在5亥主資料中出現一去 見未权正貧料誤差的狀況下， 執行該所請求之校準，該校準包含針對該控制參數之不 f值，量測如該請求中之該抖動或該資料誤差率及判定 礼制參數之分別對應於該抖動或該資料誤差率之一極 小值的區域調整值；及 -在該所請求之校準成功的狀況下，儲存該控制束數 之該區域調整值以供掃描該區域期間使用，且將該控制 參數設定至該區域調整值。 2·如請求項1之方法，其中在同一區域中請求每一控制 之每一類型之該校準不超過一次。 ^ /月长員1之方法，其中該控制參數係該致動器傾斜，且 其後在由該焦點偏移代替該致動器傾斜的情況下，於同 一區域内重複自j)至P)之步驟。 4’如明求項i之方法，其中該所請求之校準係該控制參數基 於4抖動之該校準，且其後在由一徑向偏移代替該控制 參數的情況下，於同_區域内重複至少步驟〇)及？）。 月求項1之方法，其中該抖動係該鬲頻信號之時間變化 122320.doc 200818155 之標準羔，η 4 该預定抖動差值大體上為1〇/〇。 6 ·如請求項5 $古& i 、 方去，其中該第一預定條件要求該區域抖動 大體上低於1 1 〇/ -、Λ，且該區域資料誤差率大體上大於每一資 訊單位130個資料誤差。 、 7 · 如請求項1 >古 一、 万法，其中該控制參數之該區域調整值係藉 ^適於如該請求中之該抖動或該資料誤差率之該 4測得值之函數之一最小值而判定。 Γ Ο 8 · 如請求項1夕士 ^ 、 法，，、中在無該高頻信號之狀況下，該所 :Γ、ί校準係由—包含針對該控制參數之不同值量測-.^ ^仏旒及判定該控制參數之對應於該徑向誤差信 取佳值之該區域調整值的校準所代替，該徑向誤 差L就係由該讀取頭美 貝取頭基於一指不該磁執之預壓印磁執結 構而產生。 挽信號。、之方法，其中該徑向誤差信號係一徑向誤差推 i〇. :::士項9之方法’其中該控制參數之該 由計算-適於該等測得值之函數之⑼ 爭 取大值而判定，該 取大值界疋該徑向誤差信號之該最佳值。 11 ·如請求項丨之方法， 心“、、 隹1主貝枓中出現-未校正資料 、的狀況下，執行下列步驟： =該高頻信號之-不對稱性達_第二預定次數； 性對第均不對稱性計算為該高頻信號之該不對稱 ㈣於以二預定次數之平均值；及 -在該平均不對稱性處於一褚金 預疋不對稱性範圍外的 122320.doc 200818155 狀況下，校正該高頻信號之該不對稱性， 錄載體之不平衡性。 £ 12. 如請求項11之方法，其中校正該高頻信號之該不對稱性 包含針對-徑向偏移之不同值量測該抖動’及判定該徑 向偏移對應於該抖動之一極小值的最佳值。 13. 如：求項12之方法，其中該徑向偏移之該最佳值係藉由 二十异-適於該抖動之該等測得值之函數之一最小值而判 定。 Ο Ο 14·如明求項11之方法，其中校正該高頻信號之該不對稱性 包含下列步驟： :取樣該抖動及該資料誤差率達一第三預定次數，且 計算該抖動及該資料誤差率之對應平均值； -檢查該抖動及該資料誤差率之該等平均值之一 一預定條件； 一在滿^該第二預定條件的狀況下，針對該高頻信號 :一均衡器之不同設定量測該資料誤差率，且判定該均 ::之對應於該資料誤差率之一極小值的最佳設定，否 均衡11之不同設定量測該抖μ判定該均衡器 、Μ於4抖動之一極小值的最佳設定。 15::=項]4:方法，其中該均衡器之該等最佳設定係相 :错由汁异_適於該抖動或該資料誤差率之該等測量 函數之一最小值而判定。 16·如明求項7、1 0、13或1 5中任一項之方、本 二階多項式。 項之方法，其中該函數係 122320.doc 200818155 1 7.如請求項丨】 > 古、i 含下列步驟：/ 、中測試該記錄載體之不平衡性包 樣t向積分器達—第四預定次數； •將—平均徑向積分器計算A1@ ^ 、 該第四預定次數之平均值；為“向積分器對應於 將不平衡性指示器計算為該平 該記錄載體之一旋轉頻率之平方的比值；200818155 X. Patent Application Park: 1 · A method of extracting information from a disc-shaped optical record carrier, the information being optically readable & 5 of a substantially spiral track along one of the record carriers It has been stated that the information organized into information units includes master data and error correction data. The method comprises the following steps: - rotating the record carrier and scanning the magnetic carrier by a radiation beam generated by a read head Ο G - using the signal of the control parameter to control the positioning of the radiation beam, - generating a high frequency signal based on the mark by the read head; - processing the high frequency signal into the main data and The error correction data; - the error correction data is used to find and correct the data error; the main bill and the material are stored transiently in a memory buffer; - the uncorrected data error is detected; - the magnetic track is selected a region; a blood sputum spheroid along the position of the magnetic slab; - for each region in the selected region where the radiation beam enters - sampling -, and the error rate of the -f material is m less than, Jitter representation The time variation of the high frequency signal is calculated as follows: - the area jitter is calculated as the average value of the jitter corresponding to the first predetermined number of times; • the error of one area data is incorrectly #昂<> The rate corresponds to the average of a predetermined number of times of the brothers; - in the region, the jitter is determined by a predetermined factory dome, and the movement is different from any other area of the bean, and the area is checked and/or the pregnancy is detected. Data error 122320.doc 200818155 The other region jitter is calculated for the region of any first rate of the first predetermined condition; - 隹 satisfying the first predetermined condition, f main dragon is based on the data error rate s The number of defending points is „4ί ^ 杈, otherwise the control parameter is requested to be:: calibration, the control parameter is - the actuator tilts or points " in the memory buffer, Xuangu, under the teeth ... a - the occupancy rate is south - the predetermined level 〇〆 或 or in the case of a 5 亥 master data to see the unqualified positive and negative material error, the calibration is performed, the calibration includes The control parameter a value that is not f, measuring the jitter in the request or the data error rate and the decision ritual parameter respectively corresponding to the jitter or a minimum value of the data error rate; and - at the request In the case that the calibration is successful, the area adjustment value of the control bundle number is stored for use during scanning of the area, and the control parameter is set to the area adjustment value. 2. The method of claim 1, wherein in the same area The calibration of each type of each control is requested no more than once. ^ / month 1 method, wherein the control parameter is the actuator tilt, and thereafter the actuator is replaced by the focus offset In the case of tilting, the steps from j) to P) are repeated in the same area. 4' The method of claim i, wherein the requested calibration is based on the calibration of the 4 jitter, and thereafter, in the case of a radial offset instead of the control parameter, in the same region Repeat at least steps 〇) and? ). The method of claim 1, wherein the jitter is a time variation of the chirp signal 122320.doc 200818155 standard lamb, η 4 the predetermined jitter difference is substantially 1〇/〇. 6 · If the request item 5 $古 & i, the square go, wherein the first predetermined condition requires that the region jitter is substantially lower than 1 1 〇 / -, Λ, and the data error rate of the region is substantially greater than each information unit 130 data errors. 7. If the request item 1 > ancient one, ten thousand, wherein the area adjustment value of the control parameter is adapted to be a function of the jitter in the request or the measured value of the data error rate Determined by a minimum value. Γ Ο 8 · If the request item 1 夕 ^ , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , And 判定 判定 判定 判定 判定 判定 判定 判定 判定 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该Produced by pre-embossing the magnetic structure. Pull the signal. And the method, wherein the radial error signal is a radial error 〇i〇. ::: method of the term 9 wherein the control parameter is calculated by the function of the measured value (9) It is determined by the value that the large value is the optimum value of the radial error signal. 11 · In the case of the method of requesting the item, in the case where the heart ", 隹1 main 枓 - - uncorrected data, the following steps are performed: = the asymmetry of the high frequency signal reaches _ the second predetermined number of times; The degree-to-average asymmetry is calculated as the asymmetry of the high-frequency signal (4) over an average of two predetermined times; and - the average asymmetry is outside the range of a sheet metal asymmetry. In the case of 200818155, the asymmetry of the high frequency signal is corrected, and the unbalance of the carrier is recorded. [12] The method of claim 11, wherein the asymmetry of correcting the high frequency signal comprises a radial offset The different values are measured and the radial offset is determined to correspond to an optimum value of one of the jitters. 13. The method of claim 12, wherein the optimal value of the radial offset is The method of claim 11, wherein the asymmetry of the high frequency signal is corrected by the method of the present invention, wherein the asymmetry of the high frequency signal is as follows: Steps: : Sampling the jitter and the error rate of the data reaches a first a predetermined number of times, and calculating a corresponding average value of the jitter and the error rate of the data; - checking one of the average values of the jitter and the data error rate; a condition of being full of the second predetermined condition, Determining the data error rate for the high frequency signal: different equalizer settings, and determining the optimal setting of the mean:: corresponding to a minimum value of the data error rate, or not setting the different setting of the equalization 11 The jitter μ determines the optimal setting of the equalizer and the minimum value of one of the 4 jitters. 15::=Item]4: Method, wherein the optimal setting phase of the equalizer: wrongly adapted The jitter or the minimum of one of the measurement functions of the data error rate is determined. 16) The method of any one of the items 7, 10, 13, or 15 of the present invention, the second-order polynomial, wherein The function is 122320.doc 200818155 1 7. If the request item &> Ancient, i contains the following steps: /, the unbalanced package of the record carrier is tested to the integrator - the fourth predetermined number of times; - the average radial integrator calculates A1@^, the fourth predetermined number of times Average; "to the integrator corresponding to calculating the imbalance indicator as the ratio of the square of the rotational frequency of one of the record carriers; ϋ 的狀、、兄在：不平衡性指示器處於-預定不平衡性範圍外 、/下，減小该記錄載體之該旋轉頻率。 18.:::们之方法’其中處理該高頻信號包含該高頻信號 =及一第二級放大’第二級增益被自動地控制於 一祀圍内，該方法包含下列步驟： '監視該第二級增益之值； 依賴該第二級增益之測得值而調整第_級增益，以 便使該第二級增益遠離該範圍之界限。 曰皿 19· 一種用於自一碟片狀光學記錄載體擷取資訊之裝置，該 貧=沿該記錄載體上之—大體上螺旋形之磁執的光學 可讀標記表示’組織成資訊單位之該資訊包含主資料及 誤差校正資料，該裝置包含： 知轉單元21，其用於旋轉該記錄載體； -一讀取頭22,其用於藉由—輕射束來掃描該磁軌及 基於該等標記而產生一高頻信號； _ 一讀取頭控制單元25，其用於使用表示控制參數之 #號來控制該輻射束之產生及定位； 122320.doc 200818155 -一解碼單π 30，其用於將該高頻信號處理成該主資 料及該誤差校正資料； 、 -一决差校正單元30，其用於使用該誤差校正資料來 發現並校正資料誤差； -一記憶體緩衝區，其用於過渡性地儲存該主資料； / 一碟片誤差判定及校正單元32,其用於判定碟片誤 差及控制該讀取頭控制單元，該碟片誤差判定及校正單 元包含下列子單元： C Ο -一監視單元36,其用於選擇該磁軌之區域，用於監 視該輜射束沿該磁執之位置且用於檢查未校正資料誤 之出現； ^ 取樣單7L 37，其用於在該輻射束所進入之每一區 域中’取樣-資料誤差率及—抖動達—第—預定次數 違抖動表示該高頻信號之時間變化； 區域抖動計算為該抖動 ，且用於將一區域資料 於該第一預定次數之平 -一計算單元38,其用於將一 對應於該第一預定次數之平均值 誤差率計算為該資料誤差率對應 均值； -一驗證單元39,其用於在該區域抖動以—預定抖動 ^值上不同於任何其他區域抖動的狀況下，檢查該區域抖 抖==資料誤差率之一第一預定條件，該其他區域 =二先前掃描之區域而計算，且該驗證單元 於該資料誤差率之一校準，否則二控制參數基 +否則a月求§亥控制參數基於該 122320.doc 200818155 抖動之一校準，該控 移； 要文係—致動器傾斜或一焦點偏 -一校準單元40，复用於少吟 古於益a ，、用於在该記憶體緩衝區之佔用率 同於一預定位準的狀況下， + 正貝枓块是的狀況下，執 仅 含斜w 丁 μ所绚求之校準，該校準包 同值，如該請一動 Ο Ο 或該資料誤'差率之極：二參數之分別對應於該抖動 值的區域調整值；及 -一調整單元41，其用於在該所^I Τ , Μ^ 仕邊所凊求校準成功的狀況 間使用，e收 匕周整值以供掃描該區域期 ]便用且將該控制參數今定$ +广 %如請求物之u j 域調整值。 經調適以在同二二片誤差判定及校正單元32 ° °°°或中執行每-控制參數之每一類型之 该杈準不超過一次。 母頰孓之 21. 如請求項19之裳置，該 哕雄Η #/默保δ亥致動态傾斜，其中 〇亥碟片块i判定及校正單元32叙 r 代替該致-、、二凋適以在由該焦點偏移 代曰邊致動态傾斜的情況下， 單元之動作。 、门一區域内重複該等子 22. 如請求物之裝置，該 抖動之, 皁為该控制參數基於該 適準，其，該碟片誤差判定及校正單元則周 區域内*1向偏移代㈣控制參數的情況下，於同一 23二 =複至少該校準單元及該調整單元之動作。、 •明求項19之裝置，其中該抖動俜 化之禪準# p , 亥回頻^號之時間變 丰是，且該預定抖動差值大體上為1%。 122320.doc 200818155 24.:請求項23之裝置，其中該第—預定條件要求該區域抖 動大體上低於13%，且該區域資料誤差率大體上大於= 貧訊單位1 3 〇個資料誤差。 2 5 ·如請求項19之裝置，豆φ ’、〜扠準單元4〇經調適以藉由計 异一適於如該請求中之兮七丨# " ^動或該資料誤差率之該等測 付值之函數之一最小值來划6 J疋该控制參數之該區域調整 值0 26·如請求項19之装置，1 φ兮潜， f、 /、中该碟片誤差判定及校正單元32 、㈣適以使得在錢高頻信號之狀況下，該所請求校準 係由一包含針對該控制參數之不同值量測—徑向誤差作 遽及判定該控鮮數之對應於㈣向誤差㈣之一最佳 值之該區域調整值的校準所代替，該徑向誤差信號係由 δ亥頃取頭基於一指示該磁軌之預壓印磁軌結構而產生。 27.如請求項26之裝置，其十該徑向誤差信號係一徑 推挽信號。 G 28.如請求項27之裝置，其中該校準單元健調適以藉由叶 算一適於料測得值之函數之-最大值來判定該控制參 數之該區域調整值，与Γ畀士 Μ田^ U堂值。亥取大值界定該徑向誤差信號之該 最佳值。 29.如請求項19之裝置，其中該碟片誤差散及校正單元32 包含一不對稱性及不平衡性偵測單元42,其用於： 在忒主貝料中出現一未校正資料誤差的狀況下，取 樣該高頻信號之-不對稱性達—第二預定次數； -將一平均不對稱性計算為該高頻信號之該不對稱 122320.doc 200818155 性對應於該第二預定次數的平均值；及 -在該平均不對稱性處於一 預疋不對稱性範圍外的 狀況下，杈正該高頻信號之 錄載體之不平衡性。 冉性，否則測試該記 3〇.如請求項29之裝置，其中該不對稱性及不平衡性備測單 讀_以藉由針對一徑向偏移之不同值來量 〇 Ο 且判定該徑向偏移之對應於該抖動之-極小值的最 佳值來校正該高頻信號之該不對稱性。 31·如f求項3〇之裝置，其中該不對稱性及不平衡性偵測單 :做㈣以藉由計算一適於該抖動之該等測量值之函 之最小值來判定該徑向偏移之該最佳值。 1如請求項29之裝置’其中該不對稱性及不平衡性 疋42經調適以藉由下列各項來校正 稱性： 门頊乜就之该不對 二二取樣該抖動及該資料誤差率達一第三預定次數，且 計算該抖動及該資料誤差率之對應平均值； 才双查该抖動及該資料誤差率之該等平均值之一# 二預定條件； 一弟 - 一在滿足該第二預定條件的狀況下，針對該高頻信號 之均衡器之不同設定量測該資料誤差率，且 衡器之對應於該資料誤差率之一極小值的最佳設定：均 料對該均衡H之不同設定㈣該抖動，且判定該均: 。、之對應於该抖動之一極小值的最佳設定。 、 33.如請求項32之裝置，其中該不對稱性及不平衡性偵測單 122320.doc 200818155 元42相應地經調適，以藉由計算一適 誤差率之該等剛得 科動或该資料 之該等最佳設^值之函數之—最小值來^該均衡器 34. 如請求項25、28、31或33中任一項之裝置， 係二階多項式。 ，、中邊函數 35. 如請求項29之裝置，農 元42經調適以藉由二、〃、冉十及不平衡性债測單 性·· "下列各項來測試該記錄载體之不平衡 Γ L) -取樣-徑向積分器達一第四預定次數； - 將一平均徑向積分写外曾 ^ ^ ® ^ ^ 、 十开為該徑向積分器對應於 遠弟四預疋次數之平均值； -將一不平衡性指示器計算為哕羋的斤 ..,ρ ^ ^ 馮忒千均徑向積分器與 5亥5己錄載體之-旋轉頻率之平方的比值； 的狀兄在平衡性指示器處於一預定不平衡性範圍外 的狀况下，減小該記錄載體之該旋轉頻率。 3 6 ·如明求項19之裝置，處理該高頻 一外一 ^ η馮1口琥包含该鬲頻信號之 一弟-及-第二級放大’第二級增純自動地控制於一 範圍内:其中該碟片誤差判定及校正單元32經調適用於： -監視該第二級增益之值； •依賴該第二級增益之測得值而調整第_級增益，以 便使該第二級增益遠離該範圍之界限。 A 一種電腦以產品，其於—讀取裝置自—碟片狀光學記 錄載體擷取資訊中時使用，該電腦程式包含在該讀取裝 置之-處理器上執行該電腦程式時，使該處理器執行如 請求項！至19中任-項之方法之步驟的程式碼構件。 122320.doc -10-The shape of the 、, brother: the imbalance indicator is outside the predetermined imbalance range, /, reducing the rotational frequency of the record carrier. 18.::: The method of 'the processing of the high frequency signal comprising the high frequency signal = and a second level of amplification 'the second stage gain is automatically controlled within a range, the method comprising the following steps: 'Monitoring The value of the second stage gain; adjusting the _th stage gain depending on the measured value of the second stage gain so that the second stage gain is far from the limit of the range. A device for extracting information from a disc-shaped optical record carrier, the subtraction = an optically readable mark along a substantially spiral magnetic shape on the record carrier indicating 'organized into information units The information includes main data and error correction data, and the device comprises: a transfer unit 21 for rotating the record carrier; a read head 22 for scanning the magnetic track by using a light beam and based on The markers generate a high frequency signal; _ a read head control unit 25 for controlling the generation and positioning of the radiation beam using the # sign representing the control parameter; 122320.doc 200818155 - a decoding single π 30, The method is used for processing the high frequency signal into the main data and the error correction data; - a decision correction unit 30 for using the error correction data to find and correct data errors; - a memory buffer, It is used for the transient storage of the master data; a disc error determination and correction unit 32 for determining the disc error and controlling the read head control unit, the disc error determination and correction unit comprising the following Subunit: C Ο - a monitoring unit 36 for selecting the area of the track for monitoring the position of the beam along the magnetic pole and for checking for the occurrence of uncorrected data errors; ^ Sampling list 7L 37 And for each of the regions into which the radiation beam enters, 'sampling-data error rate and-jitter-to-first-order number of violations indicate temporal changes of the high-frequency signal; region jitter is calculated as the jitter, and And a region data is used in the first predetermined number of level-to-one calculation unit 38, configured to calculate an average error rate corresponding to the first predetermined number of times as the data error rate corresponding mean; - a verification unit 39 , in the case where the jitter in the region is different from any other region jitter in the case where the predetermined jitter value is different from any other region, the area is shaken == one of the data error rates, the first predetermined condition, the other region=two previous scans Calculated by the region, and the verification unit is calibrated at one of the data error rates, otherwise the second control parameter base + otherwise a month § hai control parameter is based on one of the 122320.doc 200818155 jitter calibration, the control shift The text system-actuator tilt or a focus bias-a calibration unit 40 is multiplexed for the lesser, and is used for the condition that the occupancy rate of the memory buffer is the same as a predetermined level. + In the case of Zhengbei block, the calibration is only required to be slanted, and the calibration package has the same value. If the error is Ο or the data is incorrect, the difference between the two parameters is corresponding to the two parameters. The area adjustment value of the jitter value; and an adjustment unit 41 for using between the conditions for which the calibration is successful, and the e-receiving period is used for scanning the The zone period is used and the control parameter is set to $+广% as the uj field adjustment value of the request. It is adapted to perform each of the per-control parameters in the same two or two error determination and correction unit 32 ° ° ° ° or more than once. 21. In the case of claim 19, the 哕 哕 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / The action of the unit in the case of dynamic tilting caused by the focus offset. Repeating the sub-portion in the area of the door. 22. If the device of the request object, the dithering, the soap is based on the appropriateness of the control parameter, and the disc error determination and correction unit is offset by *1 in the circumferential area. In the case of generation (4) control parameters, at least the calibration unit and the operation of the adjustment unit are repeated in the same 23 second. The device of claim 19, wherein the jitter 俜 准 # p p p p p p p p p p p p p p p p p p p 亥 亥 亥 亥 亥 亥 亥 亥 亥 亥 亥 。 。 。 。 。 。 122. The device of claim 23, wherein the first predetermined condition requires that the region jitter is substantially less than 13% and the region data error rate is substantially greater than = 1 poor data unit 1 3 data errors. 2 5 · If the device of claim 19, the bean φ ', ~ fork unit 4 is adapted to be suitable for the error rate of the data as in the request The minimum value of one of the functions of the measured value is 6 J疋 The area of the control parameter is adjusted to 0. 26. The device of claim 19, 1 φ 兮 potential, f, /, the disc error determination and correction Units 32 and (4) are adapted such that, in the case of a high frequency signal of money, the requested calibration is determined by a different value for the control parameter, a radial error, and a determination of the control number corresponding to the (four) direction. Instead of the calibration of the zone adjustment value of one of the errors (iv), the radial error signal is generated by the delta heave head based on a pre-embossed track structure indicating the track. 27. The apparatus of claim 26, wherein the radial error signal is a push-pull signal. G 28. The apparatus of claim 27, wherein the calibration unit is adapted to determine the region adjustment value of the control parameter by a maximum value of a function of the measured value of the leaf, and the gentleman Tian ^ U Church value. The large value of the sea defines the optimum value of the radial error signal. 29. The apparatus of claim 19, wherein the disc error dispersion and correction unit 32 includes an asymmetry and imbalance detecting unit 42 for: displaying an uncorrected data error in the main billet In the case of sampling, the asymmetry of the high frequency signal is up to a second predetermined number of times; - calculating an average asymmetry as the asymmetry of the high frequency signal 122320.doc 200818155 corresponds to the second predetermined number of times The average value; and - in the case where the average asymmetry is outside the range of a pre-symmetry asymmetry, the imbalance of the record carrier of the high-frequency signal is corrected. In the case of the apparatus of claim 29, wherein the asymmetry and the imbalance are prepared for the single reading, by measuring the different values for a radial offset and determining the The radial offset corresponds to the optimum value of the jitter-minimum value to correct the asymmetry of the high frequency signal. 31. The device of claim 3, wherein the asymmetry and imbalance detection list is: (4) determining the radial direction by calculating a minimum value of a function suitable for the measurement of the jitter. The best value of the offset. 1] The apparatus of claim 29, wherein the asymmetry and imbalance 疋42 is adapted to correct the weighing by: 顼乜 顼乜 该 该 取样 取样 该 该 及 及 及 及 及 及 及 及 及a third predetermined number of times, and calculating the corresponding average value of the jitter and the error rate of the data; and double checking the jitter and one of the average values of the error rate of the data # 二 predetermined condition; one brother - one in the satisfaction of the first Under the condition of two predetermined conditions, the data error rate is measured for different settings of the equalizer of the high frequency signal, and the optimal setting of the scale corresponding to the minimum value of the data error rate is: Different settings (4) the jitter, and determine the::. The optimum setting corresponding to one of the minimum values of the jitter. 33. The apparatus of claim 32, wherein the asymmetry and imbalance detection unit 122320.doc 200818155 42 is adapted accordingly to calculate the appropriate error rate of the newly acquired or the The minimum value of the function of the data is the minimum value of the equalizer 34. The apparatus of any one of claims 25, 28, 31 or 33 is a second order polynomial. , the middle function 35. As in the device of claim 29, the agricultural element 42 is adapted to test the record carrier by means of the second, the first, the tenth and the unbalanced debt test. Unbalanced Γ L) - Sampling - Radial integrator reaches a fourth predetermined number of times; - Writes an average radial integral outside ^ ^ ® ^ ^ , Ten is opened for the radial integrator to correspond to the far four The average of the number of times; - the calculation of an imbalance indicator as the 斤 ..., ρ ^ ^ The ratio of the 均 忒 均 径向 径向 与 5 5 5 5 5 5 5 - - - - ; ; The brother reduces the rotational frequency of the record carrier in the event that the balance indicator is outside of a predetermined imbalance. 3 6 ·If the device of the item 19 is processed, the high frequency one is processed, and the other is a one of the frequency signals. The second stage amplification is automatically controlled to one. In the range: wherein the disc error determination and correction unit 32 is adapted to: - monitor the value of the second stage gain; • adjust the _th order gain by relying on the measured value of the second stage gain to enable the The secondary gain is far from the limit of this range. A computer-based product, which is used when the reading device reads information from a disc-shaped optical record carrier, and the computer program includes the processing when the computer program is executed on a processor of the reading device Execute as request item! The code component of the steps of the method of any of the 19th. 122320.doc -10-
TW96123528A 2006-06-29 2007-06-28 A device for and a method of retrieving information TW200818155A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06116268 2006-06-29

Publications (1)

Publication Number Publication Date
TW200818155A true TW200818155A (en) 2008-04-16

Family

ID=38686977

Family Applications (1)

Application Number Title Priority Date Filing Date
TW96123528A TW200818155A (en) 2006-06-29 2007-06-28 A device for and a method of retrieving information

Country Status (2)

Country Link
TW (1) TW200818155A (en)
WO (1) WO2008001317A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102341856B (en) * 2009-03-02 2015-01-07 索尼电脑娱乐公司 Optical disk device, control method therefor, program, and information recording medium
CN112285438A (en) * 2020-11-19 2021-01-29 重庆建安仪器有限责任公司 Aerial 3D radiation monitoring system based on aerial location

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5805543A (en) * 1995-02-22 1998-09-08 Matsushita Electric Industrial Co., Ltd. Tilt control apparatus based on pulsed width detection of an information reproduced signal
JPH10134372A (en) * 1996-10-31 1998-05-22 Sony Corp Reproducing device and method
JP2001126261A (en) * 1999-10-29 2001-05-11 Yamaha Corp Optical disk reproducing device
JP3702817B2 (en) * 2000-09-13 2005-10-05 ティアック株式会社 Optical disk drive device
JP4176948B2 (en) * 2000-10-23 2008-11-05 株式会社ソニー・コンピュータエンタテインメント Optical pickup position control method
JP4069087B2 (en) * 2004-02-17 2008-03-26 株式会社日立製作所 Optical disc apparatus and tilt correction processing method thereof
JP2005243201A (en) * 2004-03-01 2005-09-08 Ricoh Co Ltd Optical disk device

Also Published As

Publication number Publication date
WO2008001317A2 (en) 2008-01-03
WO2008001317A3 (en) 2008-02-21

Similar Documents

Publication Publication Date Title
US7782722B2 (en) Method of adjusting spherical aberration and focus offset and information recording/reproduction apparatus using the same
TW200818155A (en) A device for and a method of retrieving information
US8542562B2 (en) Optical disc drive and recording method
JP2008525928A (en) Recordable optical storage system
JP4095001B2 (en) Optical disc with spatial characteristics
TWI330835B (en) Optical disc drive and method of determining optimum write power for writing data to optical disc
JP3968495B2 (en) Optical recording medium driving apparatus, focus setting value correcting method, and optical recording medium
US20080273432A1 (en) Processing method of optical disc recording/playback signal, optical disc recording/playback device and program
JP2008130126A (en) Information recording/reproducing device and recording learning method
US20080259757A1 (en) Method of Adjusting Writing Parameters, Optical Disc Writer and Method of Recording Data Using the Same
JP2005174419A (en) Device and method for recording and reproducing optical information
JP2004192679A (en) Information recording method, recording type optical disk, and information recording/reproducing apparatus
JP5028531B2 (en) Recording apparatus and method, and computer program
JP2006351127A (en) Optical disk recording device and recording power adjusting method
JP5048066B2 (en) Recording apparatus and method, computer program, and recording medium
WO2007058208A1 (en) Optical axis shift correcting device and method, and computer program
JP2007207294A (en) Optical disk drive, focus offset adjusting method
JP2007220152A (en) Method and device for recording optical information
JP4240104B2 (en) Optical disk device
EP1800301A1 (en) Optical disk device having a tilt corrector, method for reading and/or writing an optical disk using an optical disk device having a tilt corrector
US20080221813A1 (en) Jitter-Based Calibration Procedure With Improved Resolution For Optical Disc Drives
KR101064562B1 (en) Optical disc recording method and optical disc recording and reproducing apparatus
JP2009026427A (en) Optical disk device and its control method
JP2008305483A (en) Optical disk recording device and optical disk recording method
JP2011258290A (en) Recording device, recording method and program