1249735 經濟部智慧財產局員工消費合作社印製 A7 B7五、發明説明（1 ) 本發明是關於配合供記錄的資料，多階段切換雷射束 的照射時間及/或照射功率的至少一方而照射到光記錄媒 體’執行多階段記錄前述資料的光記錄媒體及光記錄方法 〇 如習知的光記錄媒體般，有關對於利用多階段改變再 生信號的長度來記錄資料的方法，多數是利用多階段切換 再生信號的深度（反射信號的調制度），在相同長度的各 信號記錄複數資料的方法的硏究。 根據此光記錄方法，由於只要與利用有無凹坑記錄2 値資料做比較，就能在深度方向記錄複數資料，故可增加 分配在一定長度的信號量。因而能提高線記錄密度，因此 提案利用雷射攝影或記錄層爲多層的光記錄方法。 在此，藉由利用反射率的深度變動等來執行多階段記 錄資料的情形乃稱爲多階段記錄。 就此種多階段記錄而言，欲提高記錄密度必須縮短記 錄標記。 但是記錄標記小於記錄、讀取所使用的雷射加以聚光 時的光束直徑時，多階段記錄變得很困難。 例如於日本特開平1 〇 一 ]_ 3 4 3 5 3號公報主要是 記載欲執行多階段記錄，加以調整雷射光量的情形。在此 ’ ό己錄媒體爲染料膜或相變化膜時，是在記錄部分和未記 錄部分利用不同的反射來形成再生信號。 因而，日本特開平]_ 〇 一 i 3 4 3 5 3號公報的方法 是在於未記錄階段和記錄階段爲有無記錄的關係，不是朝 本紙張尺度適用中國國家標準（CNS ) A4規格（210x297公董) ' " -— (請先閲讀背面之注意事項再填寫本頁) 訂 -4- 1249735 經濟部智慧財產局員Η消費合作社印製 A7 _____________B7五、發明説明（2 ) 向多階的記錄。更具體而言，是在相變化膜或染料膜不存 在記錄與未記錄的中間狀態。 目前以染料膜或相變化膜爲記媒體，而調整雷射光量 完成多階的多階段記錄，是藉由雷射功率的變化，主要是 改變記錄標記的寬度。 聚光光束一般是形成高斯分佈，但記錄膜爲染料膜或 相變化膜時’是在超過某一臨限値的部分來進彳了記錄。改 變雷射功率來變化可記錄的聚光光束的光點尺寸，改變記 錄標記的寬度。 可是提高記錄密度將記錄標記長變得比聚光光束徑還 短的話，利用調制雷射功率來改變標記寬度的手法，進行 多階尤其是5階段以上的多階段記錄就變得很困難。就是 改變記錄功率，使再生時的反射級數做5階段以上變化是 很困難的。 一般聚光光束的直徑是以Κλ/ΝΑ (K :定數、入 :雷射波長、N A :透鏡的數値口徑）來表示。例如光記 錄媒體爲C D時，該C D所利用的拾波器是λ = 7 8 0 n m、N A = 〇 . 4 5而直徑約爲1 · 6 // ηι。此時，記 錄標記長爲1 . 6 // m以下時，利用改變目前的雷射功率 的方法進行5階段以上的多階段記錄是很困難的。 又例如像是日本特開平1 — 1 8 2 8 4 6號公報所揭 示的，朝向記錄層的入射光量成爲數位量時，在記錄層的 反應物的吸光度則改變成數位量的光記錄媒體。 但是推測此光記錄媒體對於雷射照射量（次數）的吸 (請先閱讀背面之注意事項再填寫本頁) -裝· 訂 本紙張尺度適用中國國家標準（CNS ) Α4規格（2】0Χ 297公釐） -5- 1249735 A7 ____B7 五、發明説明（3) 光度變化的絕對値還非常地小，尙未達到實用化。 更且像是揭示於日本特開昭6 1 — 2 1 1 8 3 5號公 報中，則是改變照射到光致變色材料的照射光強度或照射 次數’並於不同任意階段的發色濃度狀態下進行記錄的光 記錄方法。 但是利用此光記錄方法來照射雷射光而讀取時，在發 色濃度狀態下會有無法以5階段以上讀取的問題。 本發明人發現就連錄標記長是比聚光光束直徑短的 條件下，也能改變雷射照射時間及照射功率的至少一方， 來進行5階段以上的多階段記錄。由於此方法是以一定的 線速度來旋轉碟片（記錄媒體），故具有在內外周確保同 一記錄密度的優點，但對於半徑方向的不同位置經常改變 轉數的緣故，記錄再生裝置需要高度的旋轉控制。因此會 在提高資料傳送速率或提高存取速度時產生問題。 本發明是考慮上述情形，且針對一般廣被實用化的 CD — R (追記型CD) 、CD — RW (重寫型CD)的 碟片形狀，提供一目的在於能進行多階的多階段記錄，獲 得良好的信號品質的光記錄媒體及光記錄方法。更提供一 目的在於不僅視頻影像記錄就連電腦的外部記憶裝置都可 利用的多階段光記錄媒體、光記錄方法。 本發明人針對光記錄媒體重新專心硏究，發現多階段 記錄在記錄媒體的記錄方法，確認可利用該記錄方法，對 碟片狀的光記錄媒體，一邊以等角速度旋轉該記錄單元一 邊進行5階段以上的高密度多階段記錄。 本紙張尺度適用中國國家標準（CNS ) A4規格（210 X 297公釐） (請先閲讀背面之注意事項再填寫本頁) 裝- 、!· 經濟部智慧財產局員工消費合作社印製 -6 - 經濟部智慧財產局員工消費合作社印製 1249735 A7 _B7_五、發明説明（4 ) 即可藉由以下的本發明達成上述目的。 (1 ) 一種光記錄媒體，乃屬於藉由一邊在碟片中心 周圍旋轉一邊照射雷射束，而在記錄層形成記錄標記’來 記錄資訊，且讀取該記錄標記，照射雷射束而可讀取所記 錄的資訊的碟片形狀的光記錄媒體，其特徵爲： 在前述記錄層具有規定碟片旋轉方向的單位長度以及 與此垂直的方向的單位寬度，在前述碟片中心周圍的同心 圓狀或螺旋狀連續的設定有複數個虛擬記錄單元，前述虛 擬記錄單元的至少一部分的單位長度，並不拘限於碟片半 徑方向的位置，可針對碟片中心而設定成同一中心角的圓 弧長，前述虛擬記錄單元的前述記錄層可配合雷射束的照 射時間及照射功率的至少一方的5階段以上的調制，而形 成大小不同的記錄標記，藉此根據針對記錄標記的虛擬記 錄單元的面積比以及光穿透率中的至少面積比，來調制光 反射率，而完成5階段以上記錄資訊的多階段記錄。 (2 )前述虛擬記錄單元的單位長度是碟片外周側愈 長，而相對於前述虛擬記錄單元的雷射束的照射時間及照 射功率的至少一方的調制段數就成爲碟片外周側愈多爲特 徵的（1 )的光記錄媒體。 (3 )前述圓弧長是在碟片半徑方向最內側的圓弧長 的2値以上的範圍，並在該圓弧長的範圍設定2個分割虛 擬記錄單元爲特徵的（1 )的光記錄媒體。 (4 )雷射束引導用的溝槽是沿著前述記錄層，隔著 與此平行設置的凸軌而以一定間距的同心圓狀或螺旋狀設 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐) ~' (請先閲讀背面之注意事項再填寫本頁) 1249735 A7 _ _B7_ 五、發明説明（5 ) 在碟片半徑方向，前述虛擬記錄單元是前述單位寬度與前 述溝槽的寬度略一致的被設定在前述溝槽內，前述調制段 數的資訊及分割虛擬記錄單元的資訊的至少一方是記錄在 包括溝槽蛇行軌、凸軌前置凹坑、取樣伺服部的預定信號 記錄部的至少一部分爲特徵的（2 )或（3 )的光記錄媒 體。 (5 )在包括溝槽蛇行軌、凸軌前置凹坑、取樣伺服 部的預定信號記錄部的至少一部分，將各虛擬記錄單元的 角速度成爲一定或部分旋轉數來改變記錄時的旋轉，事先 記錄一部分虛擬記錄單元的角速度爲一定的資訊爲特徵的 (1 ) 、( 2 ) 、（ 3 )或（4 )的光記錄媒體。 (6 )碟片半徑方向最內側位置的前述虛擬記錄單元 的前述單位長度爲前述讀取雷射束的光束寬度的直徑以下 爲特徵的（1 )至（5 )的任一項的光記錄媒體。 (7 ) —種光記錄方法，乃屬於具有記錄層，且一邊 旋轉碟片形狀的光記錄媒體一邊將雷射束照射到前述記錄 層，而於記錄層形成記錄標記，藉此進行記錄資訊的光記 錄方法，其特徵爲：在前述記錄層，以碟片中心周圍的同 心圓狀或螺旋狀連續的假設有複數個虛擬記錄單元，且至 少一部分的前述虛擬記錄單元的單位長度，不拘限於碟片 半徑方向的位置，針對碟片中心而設定成同一中心角的圓 弧長，前述至少一部分的虛擬記錄單元記錄時的旋轉爲一 定的角速度，並對每一個前述各虛擬記錄單元，以5階段 以上調制雷射束的照射時間及照射功率的至少一方，改變 本紙張尺度適用中國國家標準(CNS ) A4規格（210X297公楚1 ~ - 8- (請先閱讀背面之注意事項再填寫本頁) ·!·裝·1249735 Ministry of Economic Affairs Intellectual Property Office Employees Consumption Cooperatives Printed A7 B7 V. INSTRUCTIONS (1) The present invention relates to collating with at least one of the irradiation time and/or the irradiation power of the laser beam in accordance with the information for recording. Optical recording medium 'Optical recording medium and optical recording method for performing multi-stage recording of the aforementioned data. For example, a conventional method of recording an optical recording medium using a multi-stage change of the length of a reproduced signal is mostly using multi-stage switching. The depth of the reproduced signal (the degree of modulation of the reflected signal), the method of recording the complex data for each signal of the same length. According to this optical recording method, since the complex data can be recorded in the depth direction as long as it is compared with the data recorded by the presence or absence of the pit, the amount of signals allocated to a certain length can be increased. Therefore, the line recording density can be increased, and therefore it is proposed to use a laser photography or recording layer as a multilayer optical recording method. Here, the case where the multi-stage recording material is executed by using the depth variation of the reflectance or the like is called multi-stage recording. For such multi-stage recording, the recording mark must be shortened in order to increase the recording density. However, when the recording mark is smaller than the beam diameter at the time of recording and reading the laser used for concentrating, multi-stage recording becomes difficult. For example, in Japanese Unexamined Patent Application No. _ 3 4 3 5 3, the publication mainly describes the case where the multi-stage recording is to be performed and the amount of laser light is adjusted. Here, when the recording medium is a dye film or a phase change film, different reflections are used in the recording portion and the unrecorded portion to form a reproduction signal. Therefore, the method of Japanese Unexamined Patent Publication No. _i 3 3 3 5 3 is that there is a record relationship between the unrecorded stage and the recording stage, and the Chinese National Standard (CNS) A4 specification (210x297 public) is not applied to the paper scale. Dong) ' " -- (Please read the notes on the back and fill out this page) Order -4- 1249735 Ministry of Economic Affairs Intellectual Property Bureau Η Consumer Cooperatives Print A7 _____________ B7 V. Invention Description (2) Record to multiple orders. More specifically, there is no intermediate state between recording and unrecording in the phase change film or the dye film. At present, the dye film or phase change film is used as the recording medium, and the adjustment of the amount of laser light to complete the multi-stage multi-stage recording is mainly to change the width of the recording mark by the change of the laser power. The condensed beam generally forms a Gaussian distribution, but when the recording film is a dye film or a phase change film, the recording is performed at a portion exceeding a certain threshold. The laser power is changed to change the spot size of the recordable concentrated beam and change the width of the recording mark. However, if the recording density is increased to make the recording mark length shorter than the focused beam path, it is difficult to perform multi-stage recording of a plurality of stages, in particular, five stages or more by using a method of modulating the laser power to change the mark width. It is difficult to change the recording power so that the number of reflection stages during reproduction is changed by more than five stages. Generally, the diameter of the concentrated beam is expressed by Κλ/ΝΑ (K: constant, in: laser wavelength, N A : number of apertures of the lens). For example, when the optical recording medium is C D , the pickup used by the C D is λ = 7 8 0 n m, N A = 〇 . 4 5 and the diameter is about 1 · 6 // ηι. At this time, when the recording mark length is 1. 6 // m or less, it is difficult to perform multi-stage recording of five stages or more by changing the current laser power. Further, for example, as disclosed in Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. 1-8 2 8 4 6 , when the amount of incident light toward the recording layer becomes a digital amount, the absorbance of the reactant in the recording layer is changed to a digital recording medium. However, it is speculated that the optical recording medium absorbs the amount of laser exposure (number of times) (please read the note on the back and fill in the page) - Loading and setting the paper size for the Chinese National Standard (CNS) Α4 specification (2) 0Χ 297 PCT) -5- 1249735 A7 ____B7 V. INSTRUCTIONS (3) The absolute enthalpy of luminosity change is still very small, and it has not been put into practical use. Further, it is disclosed in Japanese Laid-Open Patent Publication No. SHO 61 1 - 2 1 8 3 5, which is to change the intensity of the irradiation light or the number of times of irradiation of the photochromic material and to the color density state at different arbitrary stages. The optical recording method for recording is performed. However, when the laser light is irradiated by the optical recording method and read, there is a problem that it cannot be read in five stages or more in the color density state. The inventors have found that multi-stage recording of five or more stages can be performed by changing at least one of the laser irradiation time and the irradiation power under the condition that the continuous recording mark length is shorter than the diameter of the collecting beam. Since this method rotates the disc (recording medium) at a certain linear velocity, it has the advantage of ensuring the same recording density at the inner and outer circumferences, but the number of revolutions is often changed for different positions in the radial direction, and the recording and reproducing apparatus requires a high degree. Rotation control. This can cause problems in increasing the data transfer rate or increasing the access speed. The present invention has been made in view of the above circumstances, and provides a multi-stage multi-stage recording for a disc shape of a CD-R (recorded type CD) and a CD-RW (rewritten type CD) which are generally widely used. An optical recording medium and an optical recording method that obtain good signal quality. Further, a multi-stage optical recording medium and an optical recording method which are not only available for video image recording but also for an external memory device of a computer are provided. The present inventors have refocused on the optical recording medium, and found a recording method in which the recording medium is recorded in multiple stages, and confirmed that the recording method can be used to rotate the recording unit at an equal angular velocity on the optical recording medium of the disk shape. High-density multi-stage recording above the stage. This paper scale is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) (please read the note on the back and fill out this page). - -!· Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printing -6 - Ministry of Economic Affairs, Intellectual Property Office, Staff Consumer Cooperative, Printed 1249735 A7 _B7_ V. Invention Description (4) The above object can be achieved by the following invention. (1) An optical recording medium which records information by forming a recording mark on a recording layer by irradiating a laser beam while rotating around a center of the disk, and reading the recording mark to illuminate the laser beam. A disc-shaped optical recording medium for reading recorded information, wherein: the recording layer has a unit length of a predetermined disc rotation direction and a unit width perpendicular thereto, and is concentric around the center of the disc The plurality of virtual recording units are continuously arranged in a circular or spiral shape, and the unit length of at least a part of the virtual recording unit is not limited to the position in the radial direction of the disc, and may be set to an arc of the same central angle for the center of the disc. The recording layer of the virtual recording unit can be modulated with five or more stages of at least one of the irradiation time and the irradiation power of the laser beam to form recording marks having different sizes, thereby based on the virtual recording unit for the recording mark. Aligning the light reflectance with at least the area ratio of the area ratio and the light transmittance, and completing the recording of 5 stages or more News of the multi-stage record. (2) The unit length of the virtual recording unit is longer on the outer peripheral side of the disc, and the number of modulation periods of at least one of the irradiation time and the irradiation power of the laser beam with respect to the virtual recording unit becomes the outer peripheral side of the disc. An optical recording medium characterized by (1). (3) The arc length is a range of 2 値 or more in the innermost arc of the disk radial direction, and optical recording of (1) characterized by two divided virtual recording units is set in the range of the arc length. media. (4) The groove for guiding the laser beam is along the aforementioned recording layer, and is arranged at a certain pitch in a concentric or spiral shape with a convex track disposed in parallel with this. The Chinese National Standard (CNS) A4 is applied. Specifications (210X 297 mm) ~' (Please read the back note and then fill out this page) 1249735 A7 _ _B7_ V. Invention description (5) In the radial direction of the disc, the aforementioned virtual recording unit is the unit width and the groove The width of the groove is slightly matched in the groove, and at least one of the information of the number of modulation segments and the information of the divided virtual recording unit is recorded on the groove including the grooved serpentine rail, the convex pre-pit, and the sampling servo. At least a part of the predetermined signal recording portion is an optical recording medium of the feature (2) or (3). (5) changing at least a part of the predetermined signal recording portion including the grooved serpentine rail, the convex pre-pit, and the sampling servo unit, and changing the angular velocity of each virtual recording unit to a constant or partial rotation number to change the rotation during recording. An optical recording medium recording a part (1), (2), (3) or (4) of which the angular velocity of the virtual recording unit is constant. (6) The optical recording medium of any one of (1) to (5) characterized in that the unit length of the virtual recording unit at the innermost position in the radial direction of the disk is the diameter of the beam width of the read laser beam . (7) An optical recording method is a method in which a recording layer is provided, and a laser beam is irradiated onto the recording layer while rotating the disc shape, and a recording mark is formed on the recording layer, thereby recording information. The optical recording method is characterized in that: in the recording layer, a plurality of virtual recording units are assumed to be continuous in a concentric or spiral shape around the center of the disc, and at least a part of the unit length of the virtual recording unit is not limited to a disc. The position in the radial direction of the sheet is set to be the arc length of the same central angle for the center of the disc, and the rotation of at least a part of the virtual recording unit at the time of recording is a constant angular velocity, and for each of the aforementioned virtual recording units, the five-stage At least one of the above-mentioned modulated laser beam irradiation time and irradiation power, the paper size is changed according to the Chinese National Standard (CNS) A4 specification (210X297 public Chu 1 ~ - 8- (please read the back of the note first and then fill out this page) ·!·装·
、1T 經濟部智慧財產局員工消費合作社印製 1249735 A7 ____B7_ 五、發明説明（6) 形成在虛擬記錄單元內的記錄標記的大小，利用針對虛擬 記錄單元的面積比及記錄標記的光穿透率中的至少面積比 ’來調制在該虛擬記錄單元全體的光反射率，進行5階段 以上的多階段記錄來記錄資訊。 (8 )將針對前述虛擬記錄單元的雷射束的照射時間 及照射功率的至少一方的調制段數設定成碟片外周側較多 爲特徵的（7 )的光記錄方法。 (9 )配合碟片半徑方向照射位置來變化前述雷射束 的照射功率爲特徵的（7 )或（8 )的光記錄方法。 (1 0 )將前述照射功率由碟片半徑方向內側的照射 位置向著外側的照射位置依序變大爲特徵的（9 )的光記 錄方法。 (1 1 )將前述虛擬記錄單元內的記錄開始位置根據 碟片半徑方向的位置適當分配在前方一致、中心一致、後 方一致的任一處爲特徵的（7 )至（1 0 )的任一項的光 §己錄方法。 (1 2 )在碟片中心周圍的同狀圓狀連續的假設有前 述虛擬記錄單元，且設定成錯開鄰接在碟片的半徑方向的 虛擬記錄單元的碟片旋轉方向的開始位置爲特徵的（7 ) 至（1 0 )的任一項的光記錄方法。 本發明方面是多階調整雷射的照射時間及照射功率的 至少一方，並多階控制反射率。就是調制雷射照射時間及 照射功率，來調制記錄標記的大小，且多階變化根據在一 定的區域（虛擬記錄單元）內的記錄標記的面積比的光反 本紙張尺度適用中.國國家標準（CNS ) A4規格（210X297公釐） 裝— (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局8工消費合作社印製 -9- 經濟部智慈財產局員工消費合作社印製 1249735 A7 B7五、發明説明（7 ) 射率的級數，藉此就能進行多階的記錄。又，此時虛擬記 錄單元的碟片旋轉方向的單位長度，不限於碟片半徑方向 的位置，對碟片中心而言，爲同一中心角的圓弧長，就倉g 利用光記錄媒體的等角速旋轉完成多階段記錄，藉此與利 用線速度一定而旋轉的時候做比較，能以高速完成資料記 錄再生，更能藉由旋轉控制方法的簡略化來實現高存取時 間。 以下參照圖面詳細說明本發明的實施形態例。 有關本發明的實施形態例的碟片形狀的光記錄媒體 1 0是指在記錄層1 2使用染料的C D - R或使用相變化 材料的C D - R W，包括由：利用透明基材所製成的基板 1 4 ;和覆蓋於形成在在該基板1 4的其中一面（第1圖 中的上面）的雷射束引導用的溝槽1 6所形成的前述記錄 層1 2 ;和利用濺鍍等形成在該記錄層1 2的上側的金或 銀等的反射膜1 8 ;和覆蓋該反射膜1 8的外側的保護層 2 0所形成。C D - R W時，包括例如覆蓋溝槽1 6並至 少利用成膜所形成的下部保護層（誘電体層）、由相變化 材料所製成的記錄層、上部保護層（電介質層）、光反射 層’更包括覆蓋這的保護層2 0。 前述溝槽1 6是連續在碟片形狀的中心周圍的螺旋狀 或同心圓狀，且以等距形成在碟片半徑方向，又在鄰接半 徑方向的溝槽1 6間，與此平行地形成連續螺旋狀或同心 圓狀的凸軌1 7。 應用在前述記錄層1 2的染料則有··哇啉藍、份菁、 (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -10- 1249735 A7 ___________B7 五、發明説明（9 ) 5〇。 其次’針對前述虛擬記錄單元4 0及被記錄在此虛擬 日己錄單兀4 0的記錄標記做一說明。 s亥虛擬§5錄卓兀4 0被限定在記錄媒體徑向的單位寬 度及旋轉方向的單位長度。單位寬度則是在最內周部分可 任意地選擇雷射束的光束寬直徑以下，碟片1 〇的軌距或 溝槽寬度等等的寬度。 具體而言，該實施形態例的虛擬記錄單元4 0，乃如 第1圖所示，是在前述溝槽1 6內的記錄層1 2上，以單 位長度且寬度等於溝槽1 6的方式，規定複數個連續螺旋 狀或同心圓狀而假設在碟片1 0的旋轉方向即圓周方向上 〇 藉由對每個此種虛擬記錄單元4 0照射雷射束，並配 合可記錄的資訊形成第3圖模式所舉例表示的記錄標記 48A 〜48G 〇 前述單位長度並不拘限在虛擬記錄單元4 0的碟片半 徑方向的位置，相對於碟片中心的中心角β是設定成同一 圓弧長。又，絕對長度則是在碟片半徑方向的最內側，成 爲比光束直徑（光束寬度的直徑）D短的長度（圓周方向 的長度）。因而虛擬記錄單元4 0的單位長度則成爲碟片 半徑方向的外側變長，當光記錄媒體1 〇在各虛擬記錄單 元4 0成爲等角速度地旋轉時，即等於利用雷射束的各虛 擬記錄單元4 0的掃瞄時間。 在此，由前述雷射裝置3 6所射出的雷射束在記錄層 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X 297公釐） (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -12- 1249735 經濟部智慧財產局員工消費合作社印製 A7 _ B7五、發明説明（id» 1 2位置的光束直徑D則比前述虛擬記錄單元4 〇更大， 但藉由培擇g5錄層1 2的材料，可在雷射束的中心部配合 雷射照射時間或雷射照射功率形成直徑不同的記錄標記 48A〜48G。在此，（雷射束是圓形，但因爲一邊旋 轉光記錄媒體1 0 —邊照射雷射束，所以記錄標記會配合 照射時間而成爲長圓形）。 其原因是所聚焦的雷射束一般是呈高斯分佈，但就記 錄層1 2來看，只用超過雷射束的照射能量的臨界値的部 分就能執行記錄的關係，因此藉由改變雷射束的照射時間 或照射功率’就能改變記錄在記錄層1 2的雷射束的光點 尺寸，藉此例如形成如第3圖所示的7階段記錄標記 4 8 A 〜4 8 G 〇 此時，記錄標記4 8 A〜4 8 G的各大小，是設定成 讀出虛擬記錄單元4 0，照射雷射束時的反射光的光反射 率爲7階段。前述光反射率則是記錄標記愈小反射愈大， 未形成記錄標記的虛擬記錄單元成爲最大的反射率，最大 記錄標記4 8 G在虛擬記錄單元成爲最小的反射率。 更詳細是前述光反射率是考慮到針對各記錄標記 4 8 A〜4 8 G的虛擬記錄單元4 0的面積比及記錄標記 本身的光穿透率而設定。 記錄標記4 8 A〜4 8 G自身的光穿透率會因構成記 錄層1 2的材料經由雷射束的照射而分解變質，或改變結 晶狀態，就會因其折射率改變或記錄層1 2的厚度方向的 變化量而異。如果所形成的記錄標記部分的光穿透率爲零 (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X29*7公釐） -13- 1249735 A7 B7 五、發明説明（11) ，就不考慮這部分。 (請先閱讀背面之注意事項再填寫本頁) 如前所述，由於虛擬記錄單元4 0的單位長度成爲碟 片半徑方向的外側程長，當光記錄媒體1 0於各虛擬記錄 單元4 0成爲等角速度地旋轉時，等於各虛擬記錄單元 4 0的掃瞄時間。 因而，相對於各虛擬記錄單元4 0的雷射束的相對速 度亦即記錄線速度則變成碟片半徑方向外側變快，複數段 調制雷射照射時間的情形下，最長照射時間的記錄標記後 側的空間則變成碟片半徑方向外側變大，只要空間變大， 就能增多調制段數的裕度。 但對應於此記錄雷射功率本身也必須變大。即單位時 間所移動的距離變大時，相對於單位面積所照射的光量變 小，雷射功率變大來補救。 例如第4圖模式所示，當在光記錄媒體1 0的碟片半 徑方向內側區域，以7階段調制雷射照射時間時，可在碟 片半徑方向外側區域，進行8階段或9段調制。 經濟部智慧財產局員工涓費合作社印製 更且，對於在碟片最內周位置所設定的最短單元長度 ，是當隨著於碟片外周移行而變長的單元長度成爲、最短 的單元長度的2値以上時，如第4圖的最上部所示，可將 虛擬記錄單元分成兩個分割虛擬記錄單元4 0 A、4 Ο B 。只要這樣就能提高記錄密度。 更又，如上所述，以角速度一定的條件來設定虛擬記 錄單元的話，在半徑方向隔著凸軌而相鄰的下一個溝槽和 虛擬記錄單元的開始位置爲相同的關係，暗示於讀寫信號 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -14- 1249735 A7 B7 經濟部智慧財產局員工涓費合作社印製 五、發明説明（1会 時產生串音等現象的可能性。此種情形下，虛擬記錄單元 的位置仍爲原來的，而虛擬記錄單元內的信號開始位置貝[] 如第4圖中以實線所不，前方一致，如虛線所示，中心一 致，如中心線所示，後方一致等分爲兩半來解決即可。再 者，上述實施形態例中，虛擬記錄單元4 0的碟片圓周方 向的長度（單位長度），在碟片半徑方向的最內側區域爲 最短，但當此最短長度爲前述雷射束的光束寬度以下的任 意長度時，在碟片半徑方向中間位置，可成爲與光束寬度 相同程度的長度。 又，當雷射束的最長照射時間時，可在照射能量略等 於當超過使記錄層1 2變化的臨限値時所形成的記錄標記 的長度，設定虛擬記錄單元4〇。 更且，如以下說明，在雷射束能縮小虛擬記錄單元 4 0的長度方向的尺寸的情形下，在記錄媒體1 〇的碟片 半徑方向最外側位置的虛擬記錄單元4 0的單位長度就可 爲雷射束的光束寬度以下。 前述雷射束在記錄層1 2的位置是呈圓形，但此乃如 第5圖所示，例如在物鏡4 2 A加裝光束整形稜鏡4 2 C 、或光圈（圖示省略）等，而使光束形狀成爲記錄媒體 1 0的移送方向短，與此垂直的方向長的長圓形狀或線狀 。此時，記錄標記4 9變短，虛擬記錄單元就變得更短。 即可提高記錄密度。 上述實施形態是指光記錄媒體1 〇爲C D - R的碟片 ，本發明並不限於此，一般可適用在其他的光記錄媒體。 --------Λ裝-- (請先閲讀背面之注意事項再填寫本頁) 訂 本纸張尺度適用中國國家標準（CNS ) Α4規格（210X297公釐） -15 - 1249735 A7 _____B7 五、發明説明（1泽 例如C D - R / R w時，在該位址信號記錄著將位置 置換爲時間的分、秒的時間代碼。記錄裝置是讀取該時間 代碼，將磁頭移動到讀入部分，讀取各種資料。 本發明的多階段光記錄媒體是使用應用C D - R / R W的記錄裝置（記錄、再生）時，可採用經由蛇行軌引 起的位址信號。但通常與C D - R / R W的時間代碼相異 ’是採用位址代碼等信號方式。通常記錄裝置不會讀取與 C D - R / R w相異的位址信號，不會將磁頭移動到所定 位置。（此時，多階段記錄光媒體可由記錄裝置排出）一 方面’配合多階段記錄的記錄裝置，只要是可辨識地設定 該特殊的位址，就能將磁頭移動到讀入部分，讀出信號。 就是多階段光記錄媒體是採用與平常相異的位址，藉 此與其他光記錄媒體做一區分。 利用上述蛇行軌的記錄，例如像是第6圖所示，是藉 由調制光記錄媒體1 〇的讀入區1 〇 2的溝槽1 0 4 A〜 1 〇 4 C的蛇行軌（參考第1圖的符號5 6 a a )所完成 〇 具體是如第7圖所示，蛇行軌的振幅W b不變，各 溝槽1 0 4 A、1〇4 B、1 〇 4 C的蛇行軌周期T a、 T B、T c會變。例如以第6圖所示的使用者區域1 〇 6 的溝槽1 6的蛇行軌周期T。爲基本周期，載入表示比基 本周期長的蛇行軌周期T B爲「1」、短的蛇行軌周期 T a、丁 c爲「〇」的2値信號，來記錄上述各種資訊。 因而’例如蛇行軌周期，如上所述，從光記錄媒體的內周 本紙張尺度適用中國國家標準（CNS ) A4規格（2丨〇χ297公釐） (請先閱讀背面之注意事項再填寫本頁) -裝· 訂 經濟部智慧財產局員工消費合作社印製 -17- 1249735 經濟部智慧財產局員工消費合作社印製 A7 B7 _五、發明説明（1冷 側爲「0」、「1」、「0」時，該光記錄媒體1 〇是表 示多階段記錄用的媒體。 又，如上所述，以事先決定的資訊做爲記錄開始位置 資訊，根據該資訊從使用者區域1 0 6的所定位置開始記 錄。此亦成爲虛擬記錄單元4 0的開始位置的資訊。 又，上述各種資訊的其他記錄方法的例子，乃如第8 圖所示，將上述各種資訊載入形成在各溝槽1 6間的凸軌 1 7的凸軌前置凹坑1 7 A (參照第1圖的符號5 6 B ) ，例如以凸軌前置凹坑間的周期短時爲「1」、長時爲「 〇」來進行2値記錄。 更且，其他例子，乃如第9圖或第1圖中以符號5 6 所示，中途切開溝槽1 6，中途切開的溝槽長度例如短時 以「1」表示、長時以「0」表示。 利用上述第6圖、第8圖、第9圖所示的資訊記錄 手段產生的資訊，就連利用習知的2値記錄型的再生裝置 也能進行讀取，藉此就算該多階段光記錄媒體有誤，塡裝 在2値記錄型的再生及/或記錄裝置，也很容易就能判明 此爲多階型。 更且，上述各種資訊，例如像是第1 0圖所示，能事 先對讀入區1 0 2進行多階段記錄。此時，於第1 0圖中 ，可利用最初的5個虛擬記錄單元4 0 1〜4 0 5的記錄 標記，各別記錄利用多階段記錄媒體及多階段記錄的段數 、下5個虛擬記錄單元4 0 6〜4 1 0的記錄標記進行記 錄或再生的建議雷射功率等。 (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -18- 1249735 A7 ________ B7 五、發明説明（θ 前述預定信號記錄部是單獨或組合來利用前述蛇行軌 、凸軌前置凹坑等或取樣伺服部。 (請先閲讀背面之注意事項再填寫本頁} 取樣伺服部是事先具有配合信號調制段數的數量的反 射率不同的複數凹坑，或又事先在該光記錄媒體的一部分 ，如前所述進行多階段記錄的多階段記錄完成部分的記錄 標記5 4 (參照第1圖）。 (例） 以下將本發明的例子與比較例一起表示，加以說明本 發明。 此例，記錄媒體1 〇是使用在記錄層1 2使用染料的 C D — R，在碟片半徑2 5 m m及5 0 m m的位置，調制 記錄時間，進行6階段（例5爲6階段與8階段）的多階 段記錄實驗。 經濟部智慧財產局8工消費合作社印製 例1〜7及比較例的實施條件及結果，如以下的表1 ，確認可提高傳送速率、縮短存取時間。再者，例1〜7 的記錄線速度是在半徑2 5 m m的位置爲1 0 · 5，在半 徑5 0 m m的位置爲2 1 · 〇 m / s e c作爲等角速度。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -19- 1249735 A7 B7 五、發明説明（17) (表1 ) 例 旋轉速度 (r P m) 雷射記 錄功率 (mW) 單元長度（μηι) 顫動値（％) 25 mm 位置 5 0mm 位置 2 5mm 位置 5 0 m m 位置 1 4000 15. 1 2 7 9 2 4000 15 1 • 7 18 2 . 6 3 3000 13 1 2 7 8 4 4000 15 0.6 1.2 8 9 5 4000 17 1 2 8(6階 8(8階 段） 段） 6 4000 15 1 2 7 9 同心圓狀蛇行軌 7 4000 15 1 2 6 7 錯開在鄰接虛擬記錄單元的記錄開始位置 比較 線速度 15 1 1 7 7 例 1 0.5 m / s e c 批衣-- (請先閱讀背面之注意事項再填寫本頁) 、11 經濟部智慧財產局員工消費合作社印製 面內存取時間：例1〜7 = 5 0 m s e c 比較例=1 3 0 m s e c 在碟片外周的傳送速率：例/比較例=2 對具有記錄層的光記錄媒體，將其照射時間及照射功 率的至少一方做5階段以上變化來照射雷射束，且藉由多 階段記錄著供記錄的資料的記錄方法，記錄層的反射率變 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -20- 1249735 A 7 B7 五、發明説明（1沒 (請先閲讀背面之注意事項再填寫本頁) 化就能進行爲5階段以上的多階段記錄。藉此與利用線速 度一定所旋轉的情形做比較，驅動部的旋轉控制變得很容 易，且可達成高傳送速率、縮短存取時間。 .【圖面說明】 第1圖是表示有關本發明實施形態例的光記錄媒體的 主要部分的一部分斷面立體圖。 第2圖是表示爲了對同一光記錄媒體利用雷射束來記 錄資訊的光記錄裝置的方塊圖。 第3圖是表示藉由同一光記錄裝置，以雷射束的照射 功率調制，在記錄層形成記錄標記時，該記錄標記與虛擬 記錄單元及其光反射率的關係模式圖。 第4圖是表示光記錄媒體的虛擬記錄單元的其他設定 形態的模式圖。 第5圖是表示照射虛擬記錄單元的雷射束爲其他形狀 的槪略立體圖。 經濟部智慧財產局員工消費合作社印製 第6圖是放大表示事先在本發明光記錄媒體記錄各種 資訊的蛇行軌的模式圖。 第7圖是表示同蛇行軌的蛇行軌周期與2値信號關係 的線圖。 第8圖是表示於本發明光記錄媒體記錄各種資訊的凸 軌前置凹坑與2値信號關係的模式圖。 第9圖是表示於本發明光記錄媒體記錄各種資訊而中 途切開的溝槽的長度與2値信號關係的模式圖。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -21 - 1249735 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明説明（1谷 第1 0圖是表示於本發明光記錄媒體記錄各種資訊的 虛擬記錄單元與記錄標記的模式圖。 [ 符 號說 明】 1 0 光 記 錄 媒 體 ( 碟 片） 1 2 記 錄 層 1 4 基 板 1 6 溝 槽 1 7 凸 軌 1 7 A 凸 軌 刖 置 凹 坑 1 8 反 射 膜 2 〇 保 護 層 3 〇 光 記 錄 裝 置 3 1 主 軸 伺 服 器 3 2 主 軸 馬 達 3 6 雷 射 裝 置 3 8 雷 射 驅 動 器 4 0 虛 擬 記 錄 單 元 4 〇 A、 4 0 B 分 割 虛 擬 記 錄 單 元 4 2 記 錄 光 學 系 統 4 2 A 物 鏡 4 2 B 稜 鏡 4 2 C 光 束 整 形 稜 鏡 4 4 聚 隹 尋 軌 伺 服 器 (請先閱讀背面之注意事項再填寫本頁) -裝· 、11 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） - 22- 經濟部智慧財產局員工消費合作社印製 1249735 A7 B7 五、發明説明（2d 4 6 運 送 伺 服 器 4 8 A〜 4 8 G 記 錄 標 記 4 9 記 錄 標 記 5 〇 控 制 裝 置 5 4 記 錄 標 記 5 6 蛇 行 軌 1 〇 2 讀 入 1 〇 4 A 1 0 4 C 溝 槽 1 〇 6 使 用 者 區 域 4 〇 1〜 4 10 虛 擬 記 錄 單 (請先閲讀背面之注意事項再填寫本頁) •裝· 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -23-1T Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printing 1249735 A7 ____B7_ V. Invention description (6) The size of the recording mark formed in the virtual recording unit, using the area ratio for the virtual recording unit and the light transmittance of the recording mark At least the area ratio is used to modulate the light reflectance of the entire virtual recording unit, and multi-stage recording of five or more stages is performed to record information. (8) The optical recording method of (7) characterized in that the irradiation time and the irradiation power of at least one of the laser beams of the virtual recording unit are set to be large on the outer peripheral side of the disk. (9) An optical recording method of (7) or (8) characterized by changing the irradiation power of the aforementioned laser beam in accordance with the irradiation position in the radial direction of the disk. (10) An optical recording method of (9) characterized in that the irradiation power is sequentially increased from the irradiation position on the inner side in the radial direction of the disk toward the irradiation position on the outer side. (1 1 ) Any one of (7) to (1 0 ) characterized in that the recording start position in the virtual recording unit is appropriately allocated to any of the front, the center, and the rear in accordance with the position in the radial direction of the disc. The light of the item § has been recorded. (1 2) The virtual recording unit is assumed to be continuous in a circular shape around the center of the disc, and is set to be shifted from the start position of the disc rotation direction of the virtual recording unit adjacent to the radial direction of the disc ( 7) The optical recording method of any one of (10). In the aspect of the invention, at least one of the irradiation time and the irradiation power of the laser is adjusted in multiple steps, and the reflectance is controlled in multiple steps. Is to modulate the laser irradiation time and the illumination power to modulate the size of the recording mark, and the multi-order change is applied according to the area ratio of the recording mark in a certain area (virtual recording unit). (CNS) A4 size (210X297 mm) Pack — (Please read the note on the back and fill out this page) Order the Ministry of Economic Affairs Intellectual Property Bureau 8 Workers Consumption Cooperative Printed -9- Ministry of Economic Affairs Zhici Property Bureau Staff Consumer Cooperative Printed 1249735 A7 B7 V. Description of invention (7) The number of stages of the rate of incidence, whereby multi-level recording can be performed. Further, at this time, the unit length of the disk rotation direction of the virtual recording unit is not limited to the position in the radial direction of the disk, and the arc of the same center angle is long for the center of the disk, and the optical recording medium is used for the storage unit. The angular velocity rotation completes the multi-stage recording, thereby comparing the data rotation with the linear velocity constant, and the data recording and reproduction can be completed at a high speed, and the high access time can be realized by the simplification of the rotation control method. Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The disc-shaped optical recording medium 10 according to the embodiment of the present invention refers to a CD-R using a dye in the recording layer 12 or a CD-RW using a phase change material, including: made of a transparent substrate a substrate 1 4 ; and the recording layer 1 2 formed by the trench 16 for laser beam guiding formed on one side (the upper surface in FIG. 1 ) of the substrate 14 ; and sputtering A reflection film 18 such as gold or silver formed on the upper side of the recording layer 12; and a protective layer 20 which covers the outer side of the reflection film 18 are formed. The CD-RW includes, for example, a lower protective layer (electrolyte layer) formed by covering the trench 16 and at least formed by film formation, a recording layer made of a phase change material, an upper protective layer (dielectric layer), and light reflection. The layer 'more includes a protective layer 20 that covers this. The groove 16 is spirally or concentrically formed continuously around the center of the disc shape, and is formed equidistantly in the radial direction of the disc and in the groove 16 adjacent to the radial direction, and is formed in parallel therewith. Continuous spiral or concentric convex rail 17. The dye used in the above-mentioned recording layer 12 has ·································································· -10- 1249735 A7 ___________B7 V. Description of invention (9) 5〇. Next, a description will be given of the above-mentioned virtual recording unit 40 and the recording mark recorded on this virtual day. The shovel virtual § 5 is limited to the unit width in the radial direction of the recording medium and the unit length in the direction of rotation. The unit width is arbitrarily selected in the innermost portion of the width of the beam of the laser beam, the width of the track of the disk 1 或 or the width of the groove, and the like. Specifically, the virtual recording unit 40 of the embodiment is a unit length and a width equal to the groove 16 in the recording layer 1 in the groove 16 as shown in Fig. 1 . a plurality of continuous spirals or concentric circles are defined, and it is assumed that the laser beam is irradiated to each such virtual recording unit 40 in the circumferential direction of the disc 10, that is, in the circumferential direction, and is formed in accordance with recordable information. The recording marks 48A to 48G exemplified in the pattern of Fig. 3 are not limited to the position of the virtual recording unit 40 in the radial direction of the disc, and the central angle β with respect to the center of the disc is set to be the same arc length. . Further, the absolute length is the innermost side in the radial direction of the disc, and becomes a length (length in the circumferential direction) shorter than the beam diameter (diameter of the beam width) D. Therefore, the unit length of the virtual recording unit 40 becomes longer on the outer side in the radial direction of the disc, and when the optical recording medium 1 is rotated at an equal angular velocity in each of the virtual recording units 40, it is equal to each virtual record using the laser beam. The scan time of unit 40. Here, the laser beam emitted by the aforementioned laser device 36 is applied to the Chinese National Standard (CNS) Α4 specification (210X 297 mm) on the recording layer paper size (please read the back note first and then fill in this page) Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printing -12- 1249735 Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printing A7 _ B7 V. Invention description (id» 1 2 position beam diameter D is more than the aforementioned virtual recording unit 4 〇 Larger, but by selecting the material of the g5 recording layer 12, the recording marks 48A to 48G having different diameters can be formed at the center portion of the laser beam in combination with the laser irradiation time or the laser irradiation power. Here, (laser) The beam is circular, but since the laser beam is irradiated while rotating the optical recording medium 10, the recording mark becomes an oblong shape in accordance with the irradiation time. The reason is that the focused laser beam is generally Gaussian. However, as far as the recording layer 12 is concerned, the recording relationship can be performed only by the portion exceeding the critical enthalpy of the irradiation energy of the laser beam, so that the recording time can be changed by changing the irradiation time or the irradiation power of the laser beam. Recording the spot size of the laser beam of the layer 12, for example, forming a 7-stage recording mark 4 8 A to 4 8 G as shown in Fig. 3, at this time, recording each of the marks 4 8 A to 4 8 G The size is set to read the virtual recording unit 40, and the light reflectance of the reflected light when the laser beam is irradiated is seven stages. The light reflectance is the smaller the recording mark, the larger the reflection, and the virtual record in which the recording mark is not formed. The unit becomes the maximum reflectance, and the maximum recording mark 4 8 G becomes the minimum reflectance in the virtual recording unit. More specifically, the aforementioned light reflectance is a virtual recording unit 40 considering the respective recording marks 4 8 A to 4 8 G. The area ratio and the light transmittance of the recording mark itself are set. The light transmittance of the recording mark 4 8 A to 4 8 G is decomposed and deteriorated by the irradiation of the laser beam constituting the material of the recording layer 12 or Changing the crystal state varies depending on the refractive index change or the amount of change in the thickness direction of the recording layer 12. If the formed mark portion has a light transmittance of zero (please read the back note first and then fill in the book) Page) This paper scale applies to China Quasi (CNS) A4 specification (210X29*7 mm) -13- 1249735 A7 B7 V. Invention description (11), this part is not considered. (Please read the note on the back and then fill out this page) Since the unit length of the virtual recording unit 40 becomes the outer path length in the radial direction of the disc, when the optical recording medium 10 is rotated at an equal angular velocity in each of the virtual recording units 40, it is equal to the scan of each virtual recording unit 40. Therefore, the relative speed of the laser beam with respect to each virtual recording unit 40, that is, the recording line speed becomes faster in the radial direction of the disc, and the recording of the longest irradiation time in the case where the plurality of sections modulate the laser irradiation time The space on the rear side of the mark becomes larger in the radial direction of the disk, and as long as the space becomes larger, the margin of the number of modulation segments can be increased. However, the laser power itself must also become larger corresponding to this recording. In other words, when the distance moved by the unit time becomes large, the amount of light irradiated per unit area becomes small, and the laser power is increased to remedy. For example, when the laser irradiation time is modulated in seven stages in the inner side of the optical path of the optical recording medium 10 in the half-diameter direction of the optical recording medium 10, eight-stage or nine-stage modulation can be performed in the outer side in the radial direction of the disk. The Ministry of Economic Affairs' Intellectual Property Office employee's fee-based cooperatives prints the shortest unit length set at the innermost position of the disc, and the unit length becomes the shortest unit length as it moves along the outer circumference of the disc. When 2 値 or more, as shown in the uppermost portion of FIG. 4, the virtual recording unit can be divided into two divided virtual recording units 4 0 A, 4 Ο B . As long as this can increase the recording density. Further, as described above, when the virtual recording unit is set under the condition that the angular velocity is constant, the next groove adjacent to the convex track in the radial direction and the start position of the virtual recording unit have the same relationship, suggesting reading and writing. Signal paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) -14- 1249735 A7 B7 Ministry of Economic Affairs Intellectual Property Bureau employee fee cooperative cooperative printing 5, invention description (1 possible crosstalk phenomenon In this case, the position of the virtual recording unit is still the original, and the start position of the signal in the virtual recording unit is [] as shown by the solid line in Figure 4, the front is consistent, as indicated by the dotted line, the center is consistent. As shown by the center line, the rear side can be equally divided into two halves. Further, in the above-described embodiment, the length (unit length) of the disk in the circumferential direction of the virtual recording unit 40 is in the disk radial direction. The innermost area is the shortest, but when the shortest length is any length below the beam width of the aforementioned laser beam, it can be the beam width at the middle position in the radial direction of the disc. Further, when the laser beam has the longest irradiation time, the virtual recording unit 4 can be set when the irradiation energy is slightly equal to the length of the recording mark formed when the threshold 变化 which changes the recording layer 12 is exceeded. Further, as described below, in the case where the laser beam can reduce the size in the longitudinal direction of the virtual recording unit 40, the unit length of the virtual recording unit 40 at the outermost position in the disk radial direction of the recording medium 1 〇 It may be below the beam width of the laser beam. The aforementioned laser beam is circular at the position of the recording layer 12, but this is as shown in Fig. 5, for example, the objective lens 4 2 A is equipped with beam shaping 稜鏡 4 2 C or an aperture (not shown), the beam shape is such that the transfer direction of the recording medium 10 is short, and the vertical direction is long or linear. In this case, the recording mark 49 becomes short, virtual. The recording unit is made shorter. The recording density can be increased. The above embodiment refers to a disc in which the optical recording medium 1 is a CD-R, and the present invention is not limited thereto, and is generally applicable to other optical recording media. -------Λ装-- ( Read the precautions on the back and fill out this page. The standard paper size applies to the Chinese National Standard (CNS) Α4 specification (210X297 mm) -15 - 1249735 A7 _____B7 V. Invention description (1 Ze, for example, CD - R / R w At this address signal, a time code in which the position is replaced with time and seconds is recorded. The recording device reads the time code, moves the magnetic head to the reading portion, and reads various materials. The multi-stage light of the present invention. When the recording medium is a recording device (recording, reproduction) using the CD-R / RW, the address signal caused by the snake track can be used. However, the time code of the CD-R / RW is usually different from the address code. Equal signal method. Usually, the recording device does not read an address signal different from C D - R / R w and does not move the head to a predetermined position. (At this time, the multi-stage recording optical medium can be discharged by the recording device) On the one hand, the recording device with the multi-stage recording can move the magnetic head to the reading portion and read the signal as long as the special address is identifiably set. . That is, the multi-stage optical recording medium adopts an address different from usual, thereby distinguishing it from other optical recording media. The recording of the above-mentioned snake track, for example, as shown in Fig. 6, is a serpentine track by modulating the groove 1 0 4 A to 1 〇 4 C of the reading area 1 〇 2 of the optical recording medium 1 (refer to The symbol 5 6 aa of Fig. 1 is completed as shown in Fig. 7. The amplitude W b of the meandering track is constant, and the serpentine path period of each groove 1 0 4 A, 1〇4 B, 1 〇 4 C T a, TB, T c will change. For example, the meandering track period T of the groove 16 of the user area 1 〇 6 shown in Fig. 6 is used. For the basic period, the above-mentioned various information is recorded by loading a signal indicating that the snake track period T B which is longer than the base period is "1", the short snake track period T a , and the c is "〇". Thus, for example, the serpentine cycle, as described above, applies the Chinese National Standard (CNS) A4 specification (2丨〇χ297 mm) from the inner circumference of the optical recording medium. (Please read the notes on the back and fill out this page. ) - Installed by the Ministry of Economic Affairs, Intellectual Property Bureau, Staff Consumer Cooperatives, Printing -17- 1249735 Ministry of Economic Affairs, Intellectual Property Office, Staff and Consumers Cooperatives, Printing A7 B7 _ V. Invention Description (1 cold side is "0", "1", " In the case of 0, the optical recording medium 1 〇 is a medium for multi-stage recording. As described above, the information determined in advance is used as the recording start position information, and the information is obtained from the predetermined position of the user area 16 6 based on the information. The recording is started. This also becomes the information of the start position of the virtual recording unit 40. Further, as an example of other recording methods of the above various kinds of information, as shown in Fig. 8, the above various information is loaded and formed in each of the grooves 16 For example, the convex pre-pit 1 7 A (refer to the symbol 5 6 B in Fig. 1) of the convex rail 17 is, for example, the period between the pre-pits of the convex rails is "1", and the long time is " 〇" to carry out 2 records. Moreover, its For example, as shown in the symbol of FIG. 9 or Fig. 1, the groove 16 is cut in the middle, and the length of the groove cut in the middle is, for example, "1" for a short time and "0" for a long time. The information generated by the information recording means shown in the sixth, eighth, and ninth diagrams can be read by the conventional two-recording type reproducing apparatus, thereby judging the multi-stage optical recording medium. In case of mistakes, it can be easily identified as a multi-stage type by using a 2-inch recording type reproduction and/or recording device. Moreover, the above various information, for example, as shown in Fig. 10, can be The multi-stage recording is performed in the reading area 1 0 2. In this case, in the first drawing, the recording marks of the first five virtual recording units 4 0 1 to 4 0 5 can be used, and the respective recordings use the multi-stage recording medium and The number of segments recorded in multiple stages, the recording marks of the next five virtual recording units 4 0 6 to 4 1 0, the recommended laser power for recording or reproduction, etc. (Please read the notes on the back and then fill in this page) Applicable to China National Standard (CNS) A4 specification (210X297 mm) -18- 1249735 A7 ____ ____ B7 V. INSTRUCTIONS (θ The aforementioned predetermined signal recording unit uses the aforementioned snake track, convex track front pit or the like or the sampling servo unit separately or in combination. (Please read the back note first and then fill in the page.) Sampling servo The portion is a plurality of pits having different reflectances in advance in accordance with the number of signal modulation segments, or a recording mark 5 of a multi-stage recording completion portion of the multi-stage recording as described above in a part of the optical recording medium. (Refer to Fig. 1) (Example) Hereinafter, the present invention will be described with reference to a comparative example of the present invention. In this example, the recording medium 1 is a CD-R using a dye in the recording layer 12, in the dish. At a position with a radius of 2 5 mm and 50 mm, the recording time was modulated, and a multi-stage recording experiment was performed in 6 stages (Example 5 was 6 stages and 8 stages). The Ministry of Economic Affairs, Intellectual Property Office, and the Consumers' Cooperatives Printed the conditions and results of the examples 1 to 7 and the comparative examples. As shown in Table 1 below, it was confirmed that the transfer rate can be increased and the access time can be shortened. Further, the recording linear velocity of Examples 1 to 7 is 1 0 · 5 at a position of a radius of 25 m, and 2 1 · 〇 m / s e c at a position of a radius of 50 m as an equiangular velocity. This paper scale applies to China National Standard (CNS) A4 specification (210X297 mm) -19- 1249735 A7 B7 V. Invention description (17) (Table 1) Example rotation speed (r P m) Laser recording power (mW) unit Length (μηι) Shake 値 (%) 25 mm Position 5 0mm Position 2 5mm Position 5 0 mm Position 1 4000 15. 1 2 7 9 2 4000 15 1 • 7 18 2 . 6 3 3000 13 1 2 7 8 4 4000 15 0.6 1.2 8 9 5 4000 17 1 2 8 (6th order 8 (8 stages) segment) 6 4000 15 1 2 7 9 Concentric circular snake track 7 4000 15 1 2 6 7 Staggered at the beginning of recording of adjacent virtual recording units Line speed 15 1 1 7 7 Example 1 0.5 m / sec Batch --- (Please read the note on the back and fill out this page), 11 Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printed in-plane access time: Example 1 〜7 = 5 0 msec Comparative Example=1 3 0 msec Transfer rate on the outer circumference of the disc: Example/Comparative example=2 For an optical recording medium having a recording layer, at least one of the irradiation time and the irradiation power is performed in five stages or more. Change to illuminate the laser beam, and record the data for recording by multiple stages The recording method, the reflectivity of the recording layer is changed to the Chinese standard (CNS) A4 specification (210X297 mm) -20- 1249735 A 7 B7 V. Invention description (1 no (please read the notes on the back first) By filling in this page, it is possible to perform multi-stage recording of five or more stages. This makes it easier to control the rotation of the drive unit by using a rotation of the line speed, and it is possible to achieve high transfer rate and shorten storage. Fig. 1 is a partially cutaway perspective view showing a main part of an optical recording medium according to an embodiment of the present invention. Fig. 2 is a view showing the use of a laser beam for recording on the same optical recording medium. A block diagram of an optical recording device of information. Fig. 3 is a view showing the recording mark and the virtual recording unit and the light reflectance thereof when the recording mark is formed on the recording layer by the same optical recording device modulated by the irradiation power of the laser beam. Fig. 4 is a schematic view showing another setting form of the virtual recording unit of the optical recording medium. Fig. 5 is a view showing the ray irradiated to the virtual recording unit. Coming to the beam slightly perspective view of another shape. Economic Intellectual Property Office employee printed consumer cooperative 6 is an enlarged view of a previously recorded on the optical recording medium of the present invention, various information track meandering pattern of FIG. Fig. 7 is a line diagram showing the relationship between the serpentine track period and the 2値 signal of the serpentine track. Fig. 8 is a schematic view showing the relationship between the convex pre-pits and the 2-turn signals for recording various kinds of information on the optical recording medium of the present invention. Fig. 9 is a schematic view showing the relationship between the length of the groove and the signal of 2 切 cut in the middle of recording various kinds of information on the optical recording medium of the present invention. This paper scale applies to China National Standard (CNS) A4 specification (210X297 mm) -21 - 1249735 Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printed A7 B7 V. Invention description (1 valley Figure 10 shows the light in the invention Recording mode diagram of virtual recording unit and recording mark for recording various information on the media. [Symbol description] 1 0 Optical recording medium (disc) 1 2 Recording layer 1 4 Substrate 1 6 Groove 1 7 Convex rail 1 7 A Convex rail Pit 1 8 Reflective film 2 〇 Protective layer 3 Twilight recording device 3 1 Spindle servo 3 2 Spindle motor 3 6 Laser device 3 8 Laser driver 4 0 Virtual recording unit 4 〇A, 4 0 B Split virtual record Unit 4 2 Recording optical system 4 2 A Objective lens 4 2 B 稜鏡 4 2 C Beam shaping 稜鏡 4 4 Convergence tracking servo (please read the notes on the back side and fill out this page) - Install ·, 11 paper Scale applies to China Standard (CNS) A4 Specification (210X 297 mm) - 22- Ministry of Economic Affairs Intellectual Property Office Staff Consumer Cooperative Printed 1249735 A7 B7 V. Invention Description (2d 4 6 Shipping Server 4 8 A~ 4 8 G Record Mark 4 9 Recording mark 5 〇Control device 5 4 Recording mark 5 6 Snake track 1 〇2 Read in 1 〇4 A 1 0 4 C Groove 1 〇6 User area 4 〇1~ 4 10 Virtual record sheet (please read the back Note: Please fill out this page again) • Loading · This paper scale applies to China National Standard (CNS) A4 specification (210X297 mm) -23-