M268708 八、新型說明： 【新型所屬之技術領域】 本新型係關於一種光碟及其撥放設備，尤其關於一種 可防止非法盜拷之光碟及其撥放設備。 【先前技術】 現今最廣泛使用的數位資訊記錄媒體，當屬利用光铜 參存技術之碟片，例如數位音樂光碟（Compact Disk-Digita Audio ’ CD-DA)或數位多用途光碟（Digital Versatile Disk， DVD)等等’其在本說明書中均統稱為光碟⑴沖μ Disk) c 光碟2有超咼的資訊儲存密度，再加上其低廉的成本與易 於攜V性，大大促進了資訊的保存與流通。隨著可燒錄式 光碟，例如CD_R、CD_RW、DVD-R、與dvd rw之推出 與先碟燒錄機（CD DVD ReeQrder)之日漸f及，現今一 般社會j眾均可輕易自行儲存或拷貝數位資訊於光碟内。 • 換a之’在消費者購買經過原廠授權的光碟後，消費 可燒錄式光碟與燒錄機，將經過原廠授權的光碟 斤儲存的數位内容拷貝至可燒錄式光 ^ τ祕曰^ 卞丄於而，此種私 :的行為卻是屬於違反著作權之盜拷行為，並因‘ 成貝光碟的合法授權廠商遭受嚴重的利益損害。 因此，期望有一種可防止盜拷 葬以古^ a, 尤磲及其撥放設備， 稭乂有效地保護電腦軟體著作權， 公益。 阳、進商業利益與社會 M268708 【新型内容】 次有鑑於前述問題，本新型之—目的在於提供_種可防 π拷之光碟，用以有效地保護電腦軟體著作權。 本新1之另-目的在於提供一種光碟撥放設備 撥放可防止盜拷之光碟。 用以 依據本新型之一態樣，提供一種防盜拷之光碟，具有 口數位貝汛s己錄區與一真品識別碼記錄區。數位資訊記錄 區：存有-資訊識別碼，而真品識別碼記錄區則儲存有： 一 α識別碼真品識別碼記錄區係由複數個高反射單元與 低反射單TG所形成。低反射單元之反射率係設計成低到有 :文地防止一般的光碟燒錄機將其正確地拷貝至可燒錄式 ° X有甚者’低反射單元之延伸長度係設計成長到 有效地防止一般的光碟燒錄機將其正確地拷貝至可燒錄 式光碟上° 〇 依據本新型之另_態樣，提供一種光碟撥放設備 以撥放防盜拷之光碟。主軸系統旋轉防盜拷之光碟。數位 貧訊讀取頭讀取防盜拷之光碟之數位資訊記錄區。尋軌系 統移動數位資訊讀取頭。回應於數位資訊讀取頭，數位資 訊讀出電路輸出數位資訊。回應於數位資訊讀出電路，資 訊識別碼彳貞測電㈣取㈣㈣料。真品㈣碼讀取頭 6買取防盗拷之光碟之真品識別碼記錄區。回應於真品識別 ?:::頭真品識別竭讀出電路輸出真品識別碼。識別碼 t、η對於真識別碼與資訊識別碼進行比較。當直品 識別碼與資訊識料相互符合時，制錢較電路控制數、 M268708 位資訊讀出電路繼續回應於數位資訊讀取頭而輸出數位 資訊。 【實施方式】 下文中之說明與附圖將使本新型之前述與其他目 的、特徵、與優點更明顯。茲將參照圖式詳細說明依據本 新型之較佳實施例。 圖1顯示依據本新型之可防止盜拷的光碟 不意圖。參照圖1，防盜拷的光碟i 0具有一圓盤狀的基板 11，通常係由聚碳酸酯（p〇lyCarb〇nate)所形成的透明塑膠 平板。圓盤狀的基板11之中心位置處形成一圓形開口 12, 用以牙過光碟撥放設備之主軸（Spindle)。在圓盤狀的基板 Y上塗佈有一反射層1 3，用以儲存數位資訊且反射讀取 光束。在依據本新型之防盜拷的光碟1〇中，反射層13係 區分成兩部分’其中第—部分係作為—數位資訊記錄區 14，而第二部分係作為一真品識別碼記錄區1 $。 具體而言，數位資訊記錄區14係可經由一般的光學 讀取頭，如CD或DVD撥放機之光學讀取頭，擷取其中 堵存的資A。數位資訊記錄$ i 4得用以儲存音樂、程 ^才曰π —〜日Λ '凡、或文字資料等所有可數位化的資訊内 數^訊記錄區14所健存的資訊可藉由—般 D:燒:機拷貝至可燒錄式光碟上。因此，為了防止非:i ;記:區之防盜:的光碟10特別在數位資 中儲存有一預疋的貢訊識別碼，並且依據本 M268708 新型之防盜拷的光碟10額外設置了真品識別碼記錄區 15、用以儲存一真品識別碼。該真品識別碼係對應於該資 汛識別碼，並且無法藉由一般的CD或dvd燒錄機所拷 貝下文將更洋細說明。在目i所示的實施例中，真品識 別碼Λ錄區1 5係安排於反射層丨3之最外圍的一條或複數 條記錄轨道（Recording Track)。 ^ 一般而言，光碟儲存資訊的方式是在反射層13上 形成反射率較低的凹槽單元（pit)與反射率較高的執跡單 =(Land)，例如藉由母模沖壓（press_M〇idi^)形成或雷射 f束埏錄形成。當光學讀取頭照射光束至反射層丨3時， 讀出電路藉由反射光而測得反射率之高或低，$而對應地 轉換成“1”或“〇，，的數位訊號。 圖2(a)顯不沿著數位資訊記錄區14之一記錄軌道所 見的反射率艾化。參照圖2(a)，在數位資訊記錄區14 之$錄軌道上排列著複數個具有反射率R1之高反射單元 與複數個具有反射_ R2之低反射單元，藉以儲存二元資 2 —田數位貝矾記錄區14遭受光學讀取頭之光束讀取 每—高反射單^可代表二元資料中之“1，，碼，而每一低 f射單元則可代表二元資料中之T碼。在數位資訊記錄區 二中所儲存的數位資訊與資訊識別碼皆可經由習知的光 貝取頭進行6貝取或利用習知的光碟燒錄機進行拷貝。 圖2(b)顯不沿著真品識別碼記錄區丨5之一記錄執道 =呈現的反射率變化。參照圖2(b)，在真品識別碼記錄區 之^己錄轨道上排列著複數個具有反射率R1的高反射單 M268708 元與複數個具有反射率R3的低反射單元，藉以儲存一真 品識別碼2 2。在本新型中，真品識別碼係對應於資訊識別 碼，但兩者之儲存方式與讀取方式則大大不同。比較圖2(a) 與2(b)可知，真品識別碼記錄區15之低反射單元的反射 率R3遠小於數位資訊記錄區14之低反射單元的反射率 R2。此外，真品識別碼記錄區1 5之低反射單元的延伸長 度遠大於數位資訊記錄區14之低反射單元的延伸長度。 在此種情況下’真品識別碼記錄區1 5僅能由授權薇商藉 由母模沖壓之方式而形成。換言之，真品識別碼記錄區工5 所儲存的真品識別碼22無法藉由習知的光碟燒錄器燒錄 或拷貝至可燒錄式光碟上。因此，當非法盜拷的光碟欲進 行撥放時，因為依據本新型之光碟撥放設備所讀出的真品 識7碼不同於資訊識別碼或者甚至無法讀出任何適當的 真M識別碼，所以著作權警告信息將顯示出並且停止運 轉°藉此’本新型有效地使非法盜拷的光碟變成無法撥放 而毫無用處。 μ借？顯示依據本新型之用於防盜拷的光碟10之撥放 ::〇。圖4顯示圖3之光碟撥放設備3〇之操 兹將參照圖3與4詳细鳄日日分括丄 、說月依據本新型之用於防盜拷的光 碟之撥放設備30及其操作方法。 防盜拷之光碟i 〇經由中 備3〇之主轴31上。主轴/、t心以置於光碟撥放設 穩定地轉動防盜拷之光磾2:動主軸Η旋轉，進而 具有-數位資本新狀光碟撥放設備 嗔取碩33與—真品識別碼讀取頭34。 M268708 數位資訊讀取頭33得由習知的CD光學讀取頭（使用雷射 光的波長是780 nm)或DVD光學讀取頭（使用雷射光的波 長是650/63 5 nm)所實施，用以讀取數位資訊記錄區14中 依據習知CD或DVD規格所儲存的數位資訊。真品識別碼 讀取頭34係用以讀取真品識別碼記錄區1 5中所儲存的真 品識別碼。如前所述，真品識別碼記錄區1 5係以極低密 度的格式儲存資料，因此波長較長且光點較大的光束仍然 可適當地讀取真品識別碼。在一實施例中，真品識別碼讀 取頭34係由紅光或其他色光之發光二極體（LED)讀取頭所 貫施’以降低製造成本。在另一實施例中，真品識別碼讀 取頭34亦得由聲波偵測讀取頭所實施。 數位資訊讀取頭3 3係由尋執馬達3 5所控制，以移動 至所要讀取的記錄執道。然而，真品識別碼讀取頭3 4則 固定於一預定的位置，其對應於真品識別碼記錄區1 5。數 位=貝訊項出電路4 1接收由數位資訊讀取頭3 3而來之訊號 並轉換成二元訊號（圖4之步驟S丨）。真品識別碼讀出電路 42接收由真品識別碼讀取頭34而來之訊號並轉換成二元 訊號（圖4之步驟S2)。 資訊識別碼偵測電路43從數位資訊讀出電路41所獲 待的一 汛號中擷取出該預先儲存的資訊識別碼（圖4之 步驟S3)。隨後，資訊識別碼偵測電路43將所擷取的資訊 $別碼輸出至識別碼比較電路44。另一方面，真品識別碼 頃出電路42輪出真品識別碼至識別碼比較電路44。識別 焉比#乂電路44判斷真品識別碼與資訊識別碼兩者是否相 9 M268708 付（圖4之步驟S4)。當真品識別碼不同於資訊識別碼時， 識別碼比較電路44使警告電路45顯示著作權警告信息於 顯示器50上（圖4之步驟S5)。此外，識別碼比較電路44 輸出停止信號至馬達控制電路46,使得主軸馬達32與尋 執馬達35停止運轉。當真品識別碼相同於資訊識別碼時， 識別碼比較電路44使數位資訊讀出電路41繼續讀取並輸 出數位資訊至數位資訊解碼電路47(圖4之步驟S6)。數位 _ 資訊解碼電路47對於數位資訊進行解碼（圖4之步驟S7)， 隨後藉由顯示器50撥放影像資訊（圖4之步驟S8)並且藉 由揚聲器60撥放聲音資訊（圖4之步驟s9)。 圖5(a)顯示沿著真品識別碼記錄區15之一記錄執道 所呈現的反射率變化。參照圖5(a)，真品識別碼51具有 反射率R1的高反射單元與反射率R3的低反射單元。如前 所述，低反射單元之反射率R3與其延伸長度並非習知的 CD與DVD燒錄機所能形成，僅能藉由母模沖壓之方式而 _ 形成。圖5(b)顯示圖5(a)之真品識別碼記錄區15經由習 知的光碟燒錄機非法盜拷而形成之錯誤的反射率變化。來 照圖5(b)，習知的光碟燒錄機在可燒錄式光碟上僅能形成 反射率R2的單元，並且此單元之延伸長度較短。在此情 況下’真品識別碼5 1之低反射單元R3將被拷貝成由一連 宰的具有反射率R2的小單元52所組成。當此非法盜拷的 光碟放置於依據本新型之光碟撥放設備3()内欲進行撥放 時，由於真品識別碼讀取頭34所發出的讀取光束具有較 大的波長與光點，因此反射光所呈現的反射率將是平均反 10 M268708 射率Rave，其值大於反射率R3。倘若此平均反 :於所預定的臨界反射率’則真品識別碼 …： =成，的資料係高反射率的資料而非：反 別碼盘t於非法金拷的光碟無法提供相互符合的真品識 ^:、_別碼’故光碟撥放設備3〇 ='之控制下顯示著作權警告信息並且停止操作。因李^ 效地防止非法盜拷光碟之行為，藉以增進商業利M268708 8. Description of the new model: [Technical field to which the new model belongs] The new model relates to an optical disc and its playback equipment, especially to an optical disc and its playback equipment that can prevent illegal copying. [Previous technology] The most widely used digital information recording media today are optical discs using optical copper storage technology, such as Digital Music Discs (Compact Disk-Digita Audio 'CD-DA) or Digital Versatile Disks , DVD) and so on, which are collectively referred to as "optical discs in this manual." Disk 2) Disc 2 has a super-high density of information storage, coupled with its low cost and ease of portability, which greatly promotes the preservation of information. And circulation. With the development of recordable optical discs, such as CD_R, CD_RW, DVD-R, and dvd rw, and the introduction of CD DVD ReeQrder, today's general society can easily save or copy by themselves Digital information on the disc. • Change to “a” after the consumer purchases a disc authorized by the original manufacturer, consumes a recordable disc and recorder, and copies the digital content stored by the original authorized disc to the recordable optical disc ^ τ 秘However, this kind of private behavior is a kind of piracy that violates copyright, and suffered serious damage to the interests of the legally authorized manufacturer of Chengbei CD. Therefore, it is expected that there is a way to prevent pirates and burials, such as ancient ^ a, You 磲 and their release equipment, to effectively protect the copyright of computer software, public welfare. Yang, Jin Commercial Interests and Society M268708 [New content] In view of the foregoing problems, the purpose of this new model is to provide _ copy-proof discs that can effectively protect computer software copyrights. The other purpose of this new 1 is to provide a disc playback device that plays discs that prevent copying. According to an aspect of the present invention, an anti-theft optical disc is provided, which has a digital recording area and a genuine identification code recording area. Digital information recording area: stores the information identification code, while the authenticity identification code recording area stores:-α identification code The authenticity identification code recording area is formed by a plurality of high reflection units and low reflection single TG. The reflectivity of the low-reflection unit is designed to be as low as possible: Wendi prevents ordinary optical disc recorders from copying it to a recordable type ° X What's more, the extension length of the low-reflection unit is designed to grow effectively Prevents a normal disc burner from copying it onto a recordable disc correctly. According to another aspect of the new model, a disc playback device is provided to play an anti-theft disc. The spindle system rotates anti-theft discs. The digital scan head reads the digital information recording area of the anti-theft disc. The tracking system moves the digital information read head. In response to the digital information read head, the digital information readout circuit outputs digital information. In response to the digital information readout circuit, the information identification code is used to obtain data. Authentic code reading head 6 Buy the authenticity code recording area of the anti-theft disc. Respond to the authenticity identification? ::: The head authenticity identification readout circuit outputs the authenticity identification code. The identification codes t, η compare the true identification code with the information identification code. When the direct product identification code and the information material are consistent with each other, making money is more than the circuit control number. The M268708 bit information readout circuit continues to output digital information in response to the digital information read head. [Embodiment] The following description and drawings will make the foregoing and other objects, features, and advantages of the present invention more apparent. A preferred embodiment according to the present invention will be described in detail with reference to the drawings. Fig. 1 shows the intention of preventing a copy-protected optical disc according to the present invention. Referring to Fig. 1, the anti-theft optical disc i 0 has a disc-shaped substrate 11, which is usually a transparent plastic plate formed of polycarbonate (polycarbonate). A circular opening 12 is formed at the center of the disc-shaped substrate 11 for passing the spindle of the optical disc playback device. A reflective layer 1 3 is coated on the disc-shaped substrate Y to store digital information and reflect the reading beam. In the anti-theft optical disc 10 according to the new model, the reflective layer 13 is divided into two parts, wherein the first part is used as a digital information recording area 14 and the second part is used as a genuine identification code recording area 1 $. Specifically, the digital information recording area 14 can retrieve the blocked data A through a general optical pickup, such as an optical pickup of a CD or DVD player. The digital information record $ i 4 can be used to store music, programs, ^ Cai Yue, π — ~ Λ 'fan, or text data and all digitizable information within the digital ^ information recording area 14 can be saved by- Normal D: Burn: Copy to recordable disc. Therefore, in order to prevent the non-i: i; note: the anti-theft of the area: the disc 10 is stored with a pre-printed Gongxun identification code in the digital data, and a genuine identification code record is additionally set according to the new anti-theft disc 10 of M268708. Area 15 is used to store an authenticity identification code. The authentic identification code corresponds to the flood identification code, and cannot be copied by a general CD or DVD burner, which will be described in more detail below. In the embodiment shown in item i, the authenticity identification code Λ recording area 15 is one or a plurality of recording tracks arranged at the outermost periphery of the reflective layer / 3. ^ Generally speaking, the way to store information on an optical disc is to form a low reflectivity pit on the reflective layer 13 and a high reflectance track = (Land), for example, by stamping the master (press_M 〇idi ^) formation or laser f-beam recording formation. When the optical pickup head irradiates the light beam to the reflective layer 3, the readout circuit measures the reflectivity by reflecting the light, and converts it into a digital signal of “1” or “〇,” correspondingly. 2 (a) shows the reflectance ai as seen along one of the recording tracks of the digital information recording area 14. Referring to FIG. 2 (a), a plurality of reflective R1 are arranged on the recording track of the digital information recording area 14. High-reflection unit and multiple low-reflection units with reflection _ R2 to store binary data 2-field digital alum recording area 14 subject to the light beam of the optical pickup read each high-reflection unit ^ can represent binary data "1 ,," and each low-f unit can represent the T code in the binary data. The digital information and the information identification code stored in the digital information recording area 2 can be retrieved through the conventional optical pickup head or copied using the conventional optical disc recorder. Fig. 2 (b) shows the change in the reflectivity of the recording along one of the recording areas of the authenticity code recording area. Referring to FIG. 2 (b), a plurality of high-reflection singles M268708 with a reflectance R1 and a plurality of low-reflection units with a reflectance R3 are arranged on the ^ recorded track of the authenticity identification code recording area, thereby storing an authenticity identification Code 2 2. In this new model, the authentic identification code corresponds to the information identification code, but the storage and reading methods of the two are greatly different. Comparing FIGS. 2 (a) and 2 (b), it can be seen that the reflectance R3 of the low reflection unit of the authenticity code recording area 15 is much smaller than the reflectance R2 of the low reflection unit of the digital information recording area 14. In addition, the extended length of the low-reflection unit in the authenticity code recording area 15 is much larger than the extended length of the low-reflection unit in the digital information recording area 14. In this case, the 'genuine identification code recording area 15' can only be formed by an authorized Wei merchant by means of stamping by a master mold. In other words, the authenticity identification code 22 stored in the authenticity identification code recording area 5 cannot be burned or copied to a recordable disc by a conventional optical disc recorder. Therefore, when illegally copied discs are intended to be played, because the genuine product identification number 7 read by the new type of optical disc playback device is different from the information identification code or cannot even read any appropriate true M identification code, so A copyright warning message will be displayed and stopped. As a result, the new model effectively makes illegally copied discs unplayable and useless. μ borrowed? Shows the playback of the anti-theft disc 10 according to the present invention :: 〇. FIG. 4 shows the operation of the optical disc playback device 30 of FIG. 3. The operation of the optical disc playback device 30 for anti-theft copy according to the present invention and its operation will be described in detail with reference to FIGS. 3 and 4. method. The anti-theft optical disc i 〇 passes through the main shaft 31 of the backup 30. The main axis /, t centered on the optical disc setting device to stably rotate the light of anti-theft copying 2: 2: moving the main axis Η to rotate, and then have-digital capital new state optical disc playback equipment, take the master 33 and-the authenticity code read head 34. The M268708 digital information read head 33 can be implemented by a conventional CD optical read head (using laser light at a wavelength of 780 nm) or a DVD optical read head (using laser light at a wavelength of 650/63 5 nm). The digital information stored in the digital information recording area 14 according to the conventional CD or DVD specifications is read. The authenticity identification code reading head 34 is used to read the authenticity identification code stored in the authenticity identification code recording area 15. As mentioned earlier, the authenticity code recording area 15 stores data in a very low density format, so light beams with longer wavelengths and larger light spots can still properly read the authenticity code. In one embodiment, the authenticity code reading head 34 is implemented by a light emitting diode (LED) reading head of red light or other color light to reduce the manufacturing cost. In another embodiment, the authenticity code reading head 34 may be implemented by a sonic detection reading head. The digital information reading head 3 3 is controlled by the seek motor 35 to move to the record track to be read. However, the authenticity code reading head 34 is fixed at a predetermined position, which corresponds to the authenticity code recording area 15. Digital = Beijing item output circuit 4 1 receives the signal from the digital information reading head 3 3 and converts it into a binary signal (step S 丨 in Figure 4). The authenticity code reading circuit 42 receives the signal from the authenticity code reading head 34 and converts it into a binary signal (step S2 in FIG. 4). The information identification code detection circuit 43 extracts the pre-stored information identification code from a flood number obtained by the digital information readout circuit 41 (step S3 in FIG. 4). Subsequently, the information identification code detection circuit 43 outputs the captured information $ different code to the identification code comparison circuit 44. On the other hand, the authenticity identification code output circuit 42 outputs the authenticity identification code to the identification code comparison circuit 44 in turn. Identification 焉 比 # 乂 The circuit 44 judges whether the authenticity identification code and the information identification code are compatible (Step S4 in FIG. 4). When the authenticity identification code is different from the information identification code, the identification code comparison circuit 44 causes the warning circuit 45 to display the copyright warning information on the display 50 (step S5 in Fig. 4). In addition, the identification code comparison circuit 44 outputs a stop signal to the motor control circuit 46, so that the spindle motor 32 and the seek motor 35 are stopped. When the authenticity identification code is the same as the information identification code, the identification code comparison circuit 44 causes the digital information readout circuit 41 to continue reading and output the digital information to the digital information decoding circuit 47 (step S6 in Fig. 4). The digital information decoding circuit 47 decodes the digital information (step S7 in FIG. 4), and then plays the image information through the display 50 (step S8 in FIG. 4) and the sound information through the speaker 60 (step s9 in FIG. 4). ). Fig. 5 (a) shows the change in reflectance exhibited along one of the recording lanes of the authenticating code recording area 15. Referring to Fig. 5 (a), the authenticity identification code 51 includes a high reflection unit having a reflectance R1 and a low reflection unit having a reflectance R3. As mentioned before, the reflectivity R3 of the low-reflection unit and its extended length cannot be formed by the conventional CD and DVD burners, and can only be formed by stamping the master mold. Fig. 5 (b) shows the change in the reflectivity of the error caused by the illegal copying of the conventional optical disc recorder 15 by the authenticating code recording area 15 of Fig. 5 (a). As shown in FIG. 5 (b), the conventional optical disc recorder can only form a unit with reflectance R2 on a recordable disc, and the extension length of this unit is relatively short. In this case, the low reflection unit R3 of the 'genuine identification code 51' will be copied to be composed of a small unit 52 having a reflectance R2. When this illegally stolen optical disc is placed in the optical disc playback device 3 () according to the present invention for playback, because the reading beam emitted by the authenticity identification code reading head 34 has a large wavelength and light spot, Therefore, the reflectivity of the reflected light will be the average reflectance of 10 M268708 Rave, which is greater than the reflectance R3. If the average reflection: at the predetermined critical reflectance, then the authenticity identification code ...: = Cheng, the data is high reflectance data instead of: anti-code disc t illegal illegal copy of the disc can not provide a genuine authenticity Recognize ^ :, _Don't Code 'So the disc playback device 3〇 =' displays the copyright warning message and stops the operation. Li ^ effectively prevents illegal copying of optical discs in order to increase commercial profits
盈與杜會公益。 雖…、本新型業已藉由較佳實施例作為例示加以說 μ瞭解者為·本新型不限於此被揭露的實施例。相反 地’本新型意欲涵蓋對於熟習此項技藝之人士而言係明顯 的各種修改與相似置。因&，巾請專利範圍之範圍應根 據最廣的.全釋，以包容所有此類修改與相似配置。 【圖式簡單說明】 圖1顯不依據本新型之防盜拷的光碟之平面示意圖。 固（a)"、、員示沿著數位資訊記錄區之一記錄執道所呈現 的反射率變化。 圖2(b)顯不沿著真品識別碼記錄區之一記錄軌道所呈 現的反射率變化。 Θ 3纟、、員示依據本新型之用於防盜拷的光碟之撥放設 圖4顯示依據本新型之用於防盜拷的光碟之撥放設備 之搡作流程圖。 11 M268708 圖5(a)顯示沿著真品 現的反射率變化。 圖5(b)顯示圖5(a)之 磲燒錄機非法盜拷而形成 【主 要元件符號說明】 10 防盜拷之光碟 11 基板 12 開口 13 反射層 14 數位資訊記錄區 15 真品識別碼記錄區 21 數位資料 22 真品識別碼 30 光碟撥放設傷 31 主轴 32 主轴馬達 33 數位資訊讀取頭 34 真品識別碼讀取頭 35 哥軌馬達 41 數位資訊讀出電路 42 真品識別碼讀出電i 43 負訊識別碼偵测電万 12 M268708 44 識別碼比較電路 45 警告電路 46 馬達控制電路 47 數位資訊解碼電路 50 顯示器 51 真品識別碼 52 非法盜拷的真品識別碼 60 揚聲器 R1〜R3 反射率Profit and Du Hui Charity. Although ..., the present invention has been described by way of example of the preferred embodiment. The understanding is that the present invention is not limited to the disclosed embodiment. Rather, the new model is intended to cover modifications and similarities that would be apparent to a person skilled in the art. Because of & the scope of patents should be based on the broadest. Full release to accommodate all such modifications and similar configurations. [Schematic description] Figure 1 shows a schematic plan view of an anti-theft optical disc according to the present invention. Solid (a) ", staff instructions along one of the digital information recording area to record the change in reflectance presented by the road. Fig. 2 (b) shows the change in reflectance that appears along one of the recording tracks of the authenticating code recording area. Θ 3, the instructions show the playback device of the anti-theft optical disc according to the new model Figure 4 shows the flow chart of the playback device of the anti-theft optical disc according to the new model. 11 M268708 Figure 5 (a) shows the change in reflectance along the real product. Fig. 5 (b) shows the pirate recorder of Fig. 5 (a) being illegally copied. [Description of main component symbols] 10 Anti-theft disc 11 Substrate 12 Opening 13 Reflective layer 14 Digital information recording area 15 Authentication code recording area 21 Digital information 22 Authenticity code 30 Disc playback setting injury 31 Spindle 32 Spindle motor 33 Digital information read head 34 Authenticity code read head 35 Brother rail motor 41 Digital information readout circuit 42 Authenticity code readout circuit i 43 Negative signal identification code detection unit 12 M268708 44 Identification code comparison circuit 45 Warning circuit 46 Motor control circuit 47 Digital information decoding circuit 50 Display 51 Genuine product identification code 52 Illegal copy of genuine product identification code 60 Speaker R1 ~ R3 Reflectivity
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