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TWI352351B - A system with read protecting function - Google Patents

A system with read protecting function Download PDF

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Publication number
TWI352351B
TWI352351B TW095121145A TW95121145A TWI352351B TW I352351 B TWI352351 B TW I352351B TW 095121145 A TW095121145 A TW 095121145A TW 95121145 A TW95121145 A TW 95121145A TW I352351 B TWI352351 B TW I352351B
Authority
TW
Taiwan
Prior art keywords
read
data
storage device
substrate
optical storage
Prior art date
Application number
TW095121145A
Other languages
English (en)
Other versions
TW200735093A (en
Inventor
Sham Wellen
Original Assignee
Sham Wellen
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Publication of TW200735093A publication Critical patent/TW200735093A/zh
Application granted granted Critical
Publication of TWI352351B publication Critical patent/TWI352351B/zh

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Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/24Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00094Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
    • G11B20/0013Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers wherein the measure concerns not the entire record carrier, but a specific physical or logical area of one or more record carriers
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00572Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
    • G11B20/00586Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium
    • G11B20/00608Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium wherein the material that the record carrier is made of is altered, e.g. adding reactive dyes that alter the optical properties of a disc after prolonged exposure to light or air
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00681Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00688Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that a usable copy of recorded data can be made on another medium
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00681Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00695Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that data are read from the recording medium
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00731Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • G11B20/00797Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of times a content can be reproduced, e.g. using playback counters
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/007Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00736Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403Layers; Shape, structure or physical properties thereof
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/25Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537Optical discs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/258Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
    • G11B7/259Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers based on silver

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Manufacturing Optical Record Carriers (AREA)

Description

1352351 九、發明說明: 【發明所屬之技術領域】 本發明係«於-種只可讀取-次之記錄媒體及具讀取保護 •功能之系統’尤指—種具有-感光層之記制體,且該記錄媒體 :之控师料區中具有控制碼,當光儲存裝置載人該記錄媒體時, 光儲存裝置職出-特定功率之魏統?過職料紐照射於 .該感光料’該祕層或資料基板之結齡產生變化,使該反射 擊層所反射回之雷射光源無法被該光儲存裝置所讀取之只可讀取一 次之記錄媒體;此外,本發明亦提供—種具讀取保護功能之系統。 【先前技術】 通常’習知之DVD或CD片中之聲音播案、影像槽案可以經由 -簡單的安全檢查而從-主電腦被下载後於勵或⑶播放器播 放。然而該簡單的安全檢查卻可以被下載者所繞過;因此,_ 或CD片出版者並無法要求下載者付費且因此導致_或⑶媒體 ^ 之非法使用情形日增。 目别存在一些系統或方法可以解決騰或⑶媒體之複製保護 問題,例如授予給Aucsmith等人之美國第5, 991,備號專利即揭 路種方法用以編碼MPEG相容之影像資料以依序壓縮包括偵測複 數個由GOP所紐成之影像資料框,對該⑺p羞生一力口密金錄,以 及使用GOP同步化替換,轉移以及旋轉轉變加密該影像資料。 又例如授予給A_ith等人之美國第5, 915,则號專利即揭 路種密碼系統及方法用以確保使用於誦或⑶片複製保護機制 5 1352351 中金鑰之分配及管理。根據本專利一個DVD片具有壓縮、加密之 内谷被寫置於該DVD片之第-部份,以一第二金鑰自我加密被寫 置於邊DVD片之第二部份,被用以提供内容' 金錄及控制資訊給 該DVD播放器。 該美國第5, 991,403號專利係被用以編碼MpEG相容之影像資 .料以依序壓縮;而該美國第5,915,Q18號專利係—種密碼系統及 方法用以確保使用於DVD或CD片複製保護機制中金鑰之分配及管 • 理。 然而,上述之習知技術或專利皆係使用金鑰對該DVD或⑶片 之内谷進行加密及解密之管理,惟使用金鑰對該DVD或⑶片之内 容進行加密及解密之構造相對複雜,且美國第5,915,〇18號專利 案需要付較多之版稅費用,因料致成本増加,而無法降低_ 或CD片之售價,誠屬美中不足之處。 【發明内容】 •。麵決上述習知技術之缺點,本發明之主要目的係提供一種 只可讀取—次之記錄舰,該記錄媒體具有—感光層,當光儲存 裝置載入該記錄雜時,光儲存裝置所發出一特定功率^雷射^ 源穿過該資料基板照射於該感光料,該感光層之結構會產生變 化’使該反射層所反射回之雷射光源無法被該光儲存裝置所讀取^ 。為解決上述習知技術之缺點,本發明之另一目的係提供^_種 只可讀取-次之記錄媒體,該記錄媒體之控制資料區中具有控制 6 1352351 碼可供光儲存裝置辨識,以達到防止非法複製及讀取保護之目的。 為解決上述習知技術之缺點,本發明之另一目的係提供一種 具讀取保護功能之㈣,其係於記錄舰之控崎舰中具有控 制碼且將資料區中之資料進行編碼,當光儲存裝置载入該記賴 體時’可讀取該控綱錢行觸,若該控制碼係為可辨識,則 將該資料進行解碼後輸出,若該控綱係為不可辨識,則讀㈣ 資料後即輸出。 、 為達上述之目的,本發明係提供一種具讀取保護功能之系 統,其包括:-記錄媒體,其具有—f料基板,其上 資料區及-資,且該資料區中具有經編碼之湖資料^該 控制資料區中具有-控制喝;以及—光儲存裝置,其具有—解: 機制並可於載人該記錄媒體時讀取該控制喝,並對該控制碼進二 1識,若該控制碼係為可辨識,則將該預刻資料進行解錢輸出订 若該控制碼係為不可辨識,則讀取該預刻資料後即輸出。 【實施方式】 所謂只可讀取-次之記賴㈣綱記錄魏巾之内容於桂 取-次後即無法再讀取,此可德該記_射之内容無法^ 複製,其可藉域絲層之材聽生變化或者破壞㈣基j反 等方式而達成,詳細技術内容請參照下列之說明。請參照圖^及 lb ’其分別繪示本創作-較佳實施例之只可讀取—次之記錄= 之示意圖及該記錄媒體之局部放大示意圖。如圖la所示,本創作 之只可讀取一次之記錄媒體10其例如但不限於為— 7 1352351 DVD-ROM,HD DVD-ROM 或 BD-ROM 片,其包括:一資料基板 11 ; 一感光層12 ; —反射層13 ; —貼合層14 ;以及一透明基板15所 組合而成。 - 其中’該資料基板11係為一塑膠材質所製成,例如但不限於 由聚破酸醋’且其上具有一控制資料區1U及一資料區112(請參 照圖lb),且該資料區112中具有預刻(即預先燒錄)之資料,該資 料例如但不限於為電腦程式、影像資料或者聲音資料等。此外, • 該預刻之資料亦可經過編碼後再預刻於該資料基板11上 ^且該編 碼技術例如但不限於為.即-丨、MPEG—2、MPEG_4或Reed_s〇1〇man 編碼技術。 該感光層12係置於該資料基板11之上方,其對光具有敏感 性’只要-特定轉之雷射光賴射於其上,即可使其發生結構 性的變化;該感切12可由—有機染料以旋轉塗佈於該資料基板
11上而形成或者由一無機合金材料塗佈於該資料基板u上而形 成,其中該無機材料係為-金屬合金。其中,該蚊功率之雷射 光源其功率係大於10毫瓦。 〜反射層13係置於該感光層12之上方,其可反射該雷射光 2°(請參照圖2)之雷射讀寫頭(圖未示)判 靴於係由銀或銀合麵製成,惟此Μ 故在此不擬贅述。 用以貼合該資料基 5亥貼合層14係置於該反射層13之上方 8 明2351 板U及該透明基板15。 該透明基板15係置於該貼合層14之上方,係為塑膠材質所 製成,例如但不限於由聚碳酸酯,其上可供列印圖片或文字。 本發明之只可讀取-次之記錄媒體1〇於組合後,當該光儲存 震置20所發出特定功率之雷射光源穿過該資料基板丨丨照射於該 感光層12日守,该感光層12之結構會產生變化,使該反射層13所 反射回之雷射光源無法被該雄存裝置2G所讀取,如此即可達到 防止非法複製及讀取保護之目的。其中,該層12之結構變化 係為其反射率、折射率或吸收率於經由該雷射光源照射後發生變 化’使該絲存裝置2G之雷射讀寫頭(圖未示)無法讀取該資料。 因此’本發明之記錄媒體10其資料基板n ±之預刻資料於 被讀取-錢即因結構產生變化而無法再為光儲存裝置2()之雷射 讀寫頭讀取,亦㈣删倾已被舰,如此,可確_⑶或_ 片上之預刻資料無法被複製,可使内容提供者付較少之版稅費 用’從而降低所發行之CD或DVD片之價格,因此,確可改善習知 技術之缺點。 此外,為進-步強化讀取保叙目的,本發明^錄媒體1〇 ,控制資舰m中可進-步具有—控制碼115(請參照圖⑻, ,控制媽115可為一生產序號、流水號或電腦程式、影像資料或 聲音資料等之授職碼。當觀錄· 1G魏人該麵存裝錢 時’若該光儲存裝Ϊ 20無法辨識該控制石馬115則該光健雜置2〇 9 1352351 將無法讀取該預刻資料,如此,即可達到讀取保護之目的。 請參照圖2,其繪示本發明另一較佳實施例之具讀取保護功能 之系統之示意圖。如圖所示,本發明之具讀取保護功能之系統, 係由一記錄媒體10以及一光儲存裝置20所組合而成。 其中’該記錄媒體10例如但不限於為一 CD,dvdr〇m耶 DVD-ROM或BD-ROM,其具有一資料基板丨丨,該資料基板丨丨上具有 一控制資料區111及一資料區112(請參照圖ib),其中該控制資 料區111具有若干方塊(blocks)113,例如但不限於192個方塊 113,每-個方塊113具有若干區段(sect〇rs)U4,例如但不限於 16個區段’每-個區段114具有若干位元組,例如但不限於2κ 個位元組,且該資籠112中具有—已編碼之資料,例如但不限 於電腦程式、影像資料或聲音資料等,而該區段Μ中且有一^ 制碼丨15,該控制碼115例如但不限於置於該第g或丨區段^ 中’且具有4〜6位元組之長度’該控制碼115係供該光儲存裝置 =辨識’其可為該記錄細〇之生產序號、流水號或者該電腦程 式、影像㈣鱗音資料等之授權號碼。 限於:=:1係由一—成’該塑膠材質例如但不 放Jim裝置20例如但不限於為—cd播放/燒錄器或勵播 錄器,其可讀取該控制碼u 112推一初 五,、有可對該編碼之資料區 112進仃解碼之機制(圖未示),其 5貝氣 Τ及先儲存裝置20之解碼技 術需與該記錄舰1G之編喝技術相配合,例如觀錄媒難之 編碼技術係使用例如但不限於MpEG i、圆g_2 或 此㈣〇1〇麵編石馬技術而該光儲存農置20之解碼技術係使用例 如但不限於露+齡2、_七伽㈣咖之解碼技 術。 本發明之光儲存裝置2Q係有別於—般之光儲存裝置的,里可 ㈣一般讀取功率之雷射光及-特料率之雷射光,其中該1般 項取功率之雷射光其功率約0· 5mw,可用以讀取該資料區⑴ ;;’而簡定轉之雷射光其功率約1._,可於讀取該資料區 2資咖卿_如2。W絲存裝置並 ^有解碼機制對該記錄媒體料編碼之資料進行解碼,且亦不 曰於载人該記錄媒體_取該控师舰⑴中 =而本㈣之麵钱置2G除具有解韻财記錄媒體馬 2柄之資料進行解碼外,亦可於载入該記錄媒體10時讀㈣ m中之控制碼115,並對該控制碼115之内容進行辨 之生:控制碼115若具有6位元組之長度,則該記錄媒體10 像資轉於生產時將生產賴、流水號或者該f腦程式、影 48 /-音麟等之授權號碼寫人至該控婦料區111中且該 辨識立概獅att⑽)供糊存裝置20 :先錯存裝置2〇可於該控制資料區⑴中讀取該控制碼 咳示該光館存裝置20係具有該解碼機制,且若該光錯存 1352351 裝置20可辨繼㈣碼115,_光儲存裝置 料112並於解碼後輸出,若該控制石馬】 喂取編石馬之貧 儲存裝置20讀取該資料112後 :為不可辨識,則該光 料,如此使物會看到亂碼。因此,藉由上 =未經解褐之資 光儲存裝魏_可軸_護及防轉及 使内容提供者降低所發行之CD或 :::改: 習知技術之缺點。 u此確可改善
進步触讀取倾之目的,本㈣之記錄媒體10 ^一步具有一感光層12(請參照圖1),其係置於該資料基板η之 :,該感光例如但不限於由—有機㈣以旋轉塗佈於該資 / 土板11上或無機合金材料塗佈於該資料M n上而形成,宜 可於特定功率之㈣光财㈣基板u照射於該感光層u 時,該感光層12之結構會產生變化,使該反射層13所反射回之 雷射光源無法觀統歸践所讀取,減,即可達到讀取保 護之目的。其中該感光層12之結構變化係為其反射率、折射率或 吸收率發生變化,而該雷射光源之功率係大於1. 〇毫瓦。 紅上所述,本發明之只可讀取一次之記錄媒體及具讀取保護 功能之系統,其記錄媒體具有一感光層,且該記錄媒體之控制資 料區中具有控制碼’當光齡裝置載人該記麟斜,光儲存裝 置所發出一特定功率之雷射光源穿過該資料基板照射於該感光層 ^ ’ S亥感光層或資料基板之結構會產生變化,使該反射層所反射 12 1352351 回之雷射統無法被該光齡裝置所讀取之只可讀取—次之記錄 媒體等優點’確可改善習知技術之缺點。 本案所揭林,乃難實補,軌局部之變更或修飾而源 於本案之猶思細為制_技藝之人料於推知者,俱不脫 本案之專利權範嘴。 綜上所陳’本餘論就目的、手段與功效,在麵示其迥異
^習知之技觸徵,且其首先創作合於實用,亦在在符合發明之 ^要件,懇言青貴審查委員明察,並祈早曰賜予專利,俾嘉惠 社會,實感德便。 【圖式簡單說明】 圖la為—不意圖’其綠示本發明一較佳實施例之只可讀取— 二人之記錄媒體之示意圖。 圖㈣-示_,錄林㈣—錄實施狀記錄媒㈣ 之局部放大示意圖。
圖2為一示意圖, 護功能之系統之示意圖 【主要元件符號說明】 記錄媒體10 感光層12 貼合層14 光儲存裝置20 資料區112 其1 會示本發明另—較佳實施例之具讀取保 基板11 反射層13 透明基板15 控制資料區111 方塊113 13 1352351 區段114 控制碼115
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Claims (1)

1352351一 十、申請專利範圍: 1. 一種具讀取保護功能之系統,其包括: ”争?月/为修林充本
區中具有一控制碼,該記錄媒體進—步具有一感光層 而該控制資料 層,其係置於 :該ί料基板之上方’其中該感光層係由—有機染料以旋轉塗佈於 及貝料基板上或無機合金材料塗佈於該資料基板上而形成;以及 光儲存裝置,其可發出-特定功率之雷射光源,當該 鲁=源穿過該資料基板照射於該感光層時,該感光層之結構會產生 史化’使5亥反射層所反射回之雷射光源無法被該光儲存裝置所讀 取’且其具有-解碼機制並可於載入該記錄媒體時讀取該斤制°貝 碼’並對該控制碼進行辨識,若該控制碼係為可辨識,則^ 刻資料進行解碼後輸出,若該控制碼係為不可 ^ 刻資料後即輸出。 两⑴頃取顧 2.如申請專利範圍第!項所述之具讀取保護功能之系統,並中 6亥貝料基板及該透明基板係為一聚碳酸酯之塑膠材質所製成二 、3· ί申請專利範圍第1項所述之具讀取保護功能之系統,其中 •。控制貧料區具有192個方塊,每—個方塊具有咖位元組且每、一 4固區段,每一個區段具有2Κ位元組,該控制瑪具有 4. 如申請專利範圍第㈣所述之具讀取保護功能之系統, ^控制碼係為一生產序號、流水號或授權號碼。 、 5. 如申請專利範圍第㈣所述之具讀取保護功能之系統, "心己錄媒體係為一CD,DVD_R〇M,hddvd r〇m 或 bd r〇m。、 6. 如申請專職_丨獅狀具讀取賴魏之系統,其中 μ光儲存裝置係為一 CD播放/燒錄器或播放/燒錄器。 7. 如申請專利範圍第1項所述之具讀取賴魏之系統,其中 15 1352351 該編碼技術係使用MPEG-1、MPEG-2、MPEG-4或Reed-Soloman編碼 技術而該光儲存裝置之解碼機制係使用肥阢—丨、MpEG_2、MpEG_4 或Reed-Sol oman之解碼技術。 士請專利範圍第1項所述之具讀取保護功能之系統,兑 中5亥感先層之結構變化係為其反射率 ” 化;而該雷射統之解係'大於L 〇毫瓦。 R生2
16 Γ352351
七、指定代表圖: (一) 本發明指定代表圖為:第(2 )圖。 (二) 本代表圖之元件符號簡單說明: 記錄媒體10 光儲存裝置20 控制資料區111 資料區112
八、本發明若有化學式時,請揭示最能顯示發明特徵的化學式:
TW095121145A 2006-03-13 2006-06-14 A system with read protecting function TWI352351B (en)

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US5815484A (en) * 1995-12-28 1998-09-29 Hide And Seek Technologies L.L.C. Copy protectable optical media device and methodology therefor
US5915018A (en) * 1996-11-05 1999-06-22 Intel Corporation Key management system for DVD copyright management
US6747930B1 (en) * 1996-12-24 2004-06-08 Hide & Seek Technologies, Inc. Data protection on an optical disk
US6638593B2 (en) * 2000-06-30 2003-10-28 Verification Technologies, Inc. Copy-protected optical media and method of manufacture thereof
US6589626B2 (en) * 2000-06-30 2003-07-08 Verification Technologies, Inc. Copy-protected optical media and method of manufacture thereof
WO2002084656A1 (de) * 2001-03-28 2002-10-24 Bayer Aktiengesellschaft Optischer datenträger enthaltend in der informationsschicht einen triazacyaninfarbstoff als lichtabsorbierende verbindung
US20060105134A1 (en) * 2004-11-12 2006-05-18 Flexplay Technologies, Inc. Optical media, read inhibiting agents and methods of making and using same
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US20070030781A1 (en) * 2005-07-15 2007-02-08 Microsoft Corporation Tamper resistant security data on optical media
US7933194B2 (en) * 2006-02-01 2011-04-26 Wellen Sham Read-once record medium

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