WO2004114293A1 - A non-hole optical disc for data storage and reading - Google Patents

A non-hole optical disc for data storage and reading Download PDF

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Publication number
WO2004114293A1
WO2004114293A1 PCT/CN2004/000676 CN2004000676W WO2004114293A1 WO 2004114293 A1 WO2004114293 A1 WO 2004114293A1 CN 2004000676 W CN2004000676 W CN 2004000676W WO 2004114293 A1 WO2004114293 A1 WO 2004114293A1
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WO
WIPO (PCT)
Prior art keywords
area
optical disc
disc
lead
information
Prior art date
Legal status (The legal status 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 status listed.)
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PCT/CN2004/000676
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English (en)
French (fr)
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WO2004114293A8 (en
Inventor
Mali Gong
Lei Huang
Longfa Pan
Yuan Yao
Min Lu
Shurong Ma
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CHENGDU TOSUN SCIENCE AND TECHNOLOGY DEVELOPMENT Ltd
Tsinghua University
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CHENGDU TOSUN SCIENCE AND TECHNOLOGY DEVELOPMENT Ltd
Tsinghua University
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Publication of WO2004114293A1 publication Critical patent/WO2004114293A1/zh
Publication of WO2004114293A8 publication Critical patent/WO2004114293A8/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/24003—Shapes of record carriers other than disc shape
    • G11B7/24012—Optical cards

Definitions

  • the present invention relates to a non-porous optical memory for data storage and reading, and belongs to the field of high-density digital optical storage technology, and more particularly to portable optical storage technology.
  • Optical disc storage is one of the primary means of high density information storage.
  • Optical disc drives are the most common and commonly used disc storage and reading devices.
  • the optical disc drive can be separated from the digital information stored in the optical disc by the optical system, the electromechanical system, and the circuit system, through the decoding and reproduction of the software and hardware, and output through the output terminal, and the digital information is recorded to the optical disc through the processing of the software and hardware. in.
  • the S-direction structure is as shown in FIG. 1 , and it can be seen that the optical disc is composed of the base layer 6 and the information layer (mainly by the transition region 2, the lead-in area 3, the data area 4, and the lead-out area 5).
  • the composition is composed of 7 layers.
  • the information layer of «: the center of the film to the diameter of 44 ⁇ cannot be used for recording information, but only for the clamping, fixing and degree of the disc. Only areas from 44 ⁇ diameter to 78 awake can be used for the storage of data information.
  • the area of the data storage area is only 64.8% of the total area of the disc.
  • transition zone 2 wherein the transition zone comprises: a first zone (diameter 15 ⁇ 16 16), a second transition zone (diameter 16 mn! ⁇ 22 mm), a clamping zone (diameter 22 mm to 33 mm), Third degree zone (diameter 33 mm ⁇ 44 mm). From the end of the third degree zone (diameter 44 mm) to the edge of the disc (77 mm diameter), it is the information area of the disc.
  • the information area is divided into three regions, namely, lead-in area 3 (diameter 44.6 mm to 48 mm), data area 4 (diameter 48 mm to 76 mm), and lead-out area 5 (diameter 76). Mm ⁇ 77 mm).
  • lead-in area control information, publishing information, copyright content, and the like of the optical disc are mainly recorded; various user data can be stored and recorded in the data area; the lead-out area is an area for ensuring that the optical disc can continuously read out the surface smoothly. From the lead-out area to the edge of the disc (80 mm diameter) Not considered for data storage or other purposes.
  • the conventional apertured optical disc has an international standard of 15 mm diameter holes in the center of the disc due to the consideration of the clamping, fixing, reading transition, reading and the like of the disc. And around the hole are various transition zones and clamping zones. Even within the effective information area, it needs to be further divided into a lead-in area, a data area, and a lead-out area. Therefore, the truly valid data area is only from 48 mm in diameter to 76 mm in diameter, and the area of the disc is only 54.25 % for the storage of user data, and the storage capacity is greatly wasted. '
  • An object of the present invention is to provide a non-porous optical disc for data storage and reading.
  • the use of the hard disk storage area at the center of the disk is greatly utilized, thereby greatly improving the existing disk. Capacity to fully meet the user's storage capacity requirements for storage media.
  • a non-porous optical disc for data storage and reading designed by the present invention comprises a base layer, a cover layer and an information recording layer, wherein the base layer, the information recording layer and the layer are sequentially laminated to each other.
  • the information recording layer may be a lead-out area, a data area, and a lead-in area from the center to the circumference, or may be a lead-in area, a data area, and a lead-out area.
  • the information recording layers described in the above non-porous optical discs may all be data recording layers.
  • the above-mentioned non-porous optical disc has a size of 5 mn! ⁇ 120 mm; thickness is 0.2 mn! ⁇ 3 mm; the thickness of the cover layer is 0.01 mm to 3 mm.
  • the data area of the above non-porous optical disc is engraved with a tight circular information track or a spiral information track.
  • the non-porous optical disc may further include a decorative area provided on the periphery of the optical disc, and the decorative area may be square, circular or any other geometric shape.
  • the material of the peripheral portion of the center of rotation of the above-mentioned non-porous optical disk is the same as or different from that of the other portions of the optical disk.
  • the non-porous optical disc for data storage and reading proposed by the present invention has no holes in the optical disc, and the entire area of the entire optical disc can be used for data storage.
  • This non-porous disc can be a read-only disc and can be written at one time.
  • the non-porous optical disc for data storage and reading proposed by the present invention can be applied to optical information pickup of a conventional optical disc drive or other information pickup/recording mechanism.
  • non-porous optical disc for data storage and reading proposed by the present invention can have a smaller disk area under the premise of realizing the same data storage capacity, it also has sufficient storage development potential, for example, an area more.
  • a small but sufficient capacity non-porous disc can be applied to other personal digital portable consumer electronic products, such as mobile phones, PDAs, walkmans, on-the-go, E-Books, etc., to become an efficient and reliable storage means for these products, thus occupying A broader consumer electronics market.
  • optical disc designed by the present invention is applicable to any optical disc having an international standard and any other optical disc having data storage and reading functions.
  • FIG. 1 is a schematic cross-sectional view showing the appearance of a conventional optical disk.
  • FIG. 2 is a schematic cross-sectional view showing the outline of a non-porous optical disk designed in accordance with the present invention.
  • 3 to 9 are schematic views showing the structure of an embodiment of the present invention.
  • 1 is a positioning hole
  • 2 is a degree area
  • 3 is a lead-in area
  • 4 is a data area
  • 5 is a lead-out area
  • ⁇ is a base layer
  • 7 is a cover layer
  • 8 is a concentric circular track
  • 9 It is a spiral track
  • a decorative area in 10 pieces 11 is the information area in the disc
  • 12 is the peripheral part of the center of rotation of the disc
  • HI is the thickness of the cover layer
  • H2 is the total thickness of the disc
  • D1 is the disc.
  • D2 is the outer diameter of the peripheral portion of the center of rotation of the optical disk.
  • a non-porous optical disc for data storage and reading designed by the present invention includes a base layer 6, .m 7 and an information recording layer, a base layer 6, an information recording layer and an m layer 7 of the user. Phase Press each other together.
  • the information recording layer is the lead-out area 5, the data area 4, and the lead-in area 3 from the center to the garden, or may be the lead-in area 3, the data area 4, and the lead-out area 5 from the center to the garden, as shown in FIG. Show.
  • the information recording layer described in the above non-porous optical disc may also be all data recording layers, as shown in FIG.
  • the above-mentioned non-porous optical disc has a diameter D1 of 5 mm to 120 mm and a thickness H2 of 0.2 mn! ⁇ 3 mm; wherein the thickness HI of the cover layer is 0.01 mm to 3 mm.
  • the above-mentioned non-porous optical disc has a close circular information track or a spiral information track, as shown in Figs. 5 and 6.
  • the non-porous optical disc may further include a decorative area provided on the periphery of the optical disc, and the decorative area may be square, as shown in Fig. 7; circular or any other geometric shape, and the heart shape is shown in Fig. 8.
  • the material of the peripheral portion of the center of rotation of the above-mentioned non-porous optical disk is the same as or different from that of the other portions of the optical disk.
  • the material of the center of rotation of the non-porous optical disk shown in Fig. 9 is different from that of other parts of the optical disk.
  • the non-porous optical disk of the present invention as shown in Fig. 2, from the center to the outer edge of the disk, no longer divides regions such as a center hole, a transition region, a nip region, and the like for disk fixing, clamping, and transition. From the center of the disc to the edge of the disc (77 mm in diameter), all are the information areas of the disc.
  • the information area of the optical disc shown in Fig. 2 is further divided into three areas according to different functions, from the center to the outer edge of the optical disc, and in turn, the lead-out area 5, the data area 4, and the lead-in area 3.
  • control information, publication information, copyright content, and the like of the optical disc can be recorded in the lead-in area; various user data can be stored and recorded in the data area; the lead-out area is an area for ensuring that the optical disc can continuously and smoothly read data.
  • the non-porous optical disc proposed by the present invention no longer considers the problems of clamping, fixing, reading transition, readout transition, etc. of the disc at the center of the disc, no holes are required in the disc. And various transition zones and clamping zones surrounding the aperture. From the center of the disc to the edge of the disc can be used as a valid information area. Considering that inside the effective information area, there are also divisions of the lead-in area, the observation area, and the lead-out area, The extent of the zone can be at least awake from a diameter of 5 ⁇ to a diameter of 76. Therefore, at least 89.86% of the disk area is a truly valid data area that can be used for user data storage. Comparing Fig. 2 with Fig. 1, it can be seen that with a non-porous optical disc, the storage capacity can be greatly improved.
  • the disc structure shown in Fig. 2 can be applied to any existing optical disc. If applied to a CD standard disc, the single-sided storage capacity can be increased by 65% from the original 650 MB to 1.07 GB; while applied to the DVD standard disc, the single-sided storage capacity can be increased by 65% from the original 4.7 GB. 7.75 GB.
  • the optical disk shown in Fig. 2 is written or read from the outermost periphery to the innermost circle since the outermost edge of the optical disk is the lead-in area and the innermost circle of the optical disk is the lead-out area.
  • Figure 2 shows the disc structure of a non-porous disc:
  • the disc consists of a base layer 6, an information layer (mainly composed of lead-in area 3, data area 4, lead-out area 5, etc.) and a cover layer 7.
  • the thickness of the disc of the non-porous optical disc proposed by the present invention may be between 0.2 mm and 3 mm, for example 1.2 mm; the size of the disc is 5 mn! Between ⁇ 120 mm, for example 78 mm; the thickness of the overlay is between 0.01 mn! Between ⁇ 3 mm, for example 0.6 mm. Since the embodiment of the non-porous optical disc has the structure of the non-porous optical disc shown in Fig. 2, it will not be specifically described below in the embodiment described in Figs. 5 and 6.
  • Fig. 5 is a schematic view showing the distribution of a circular information track of the non-porous optical disk of the present invention.
  • the information track in the lead-in area, the data area, and the lead-out area is a concentric circular track 8 having a plurality of different diameters centered on the center of the disc. All data information is stored in these circular information tracks.
  • Figure 6 is a schematic view showing the distribution of a spiral information track of a non-porous optical disk.
  • the information track in the lead-in area, the random area, and the lead-out area is a closely arranged spiral track 9. All data information is stored on these spiral information tracks.
  • the lead-out area 5 in the light
  • the innermost circle of the disc is the lead-in area 3
  • between the lead-in area and the lead-out area is the data area 4, and the data is written and read from the innermost circle to the outermost periphery.
  • there is no lead-in area and lead-out area in the optical disc and only the flip area 4 can be written or read from the outermost periphery to the innermost circle, or from the innermost circle. Write or read to the outermost periphery.
  • the data zone in the disk can be at least 1 mm in diameter. Up to 76 mm in diameter, therefore, at least 90.23% of the disk area can be used for user data storage, which is a truly effective data area, and the storage capacity can be further improved.
  • the disc structure shown in Fig. 4 can also be applied to any existing optical disc. If applied to a CD standard disc, the single-sided storage capacity can be increased by 66.2% from the original 650 MB to 1.08 GB; while applied to the DVD standard disc, the single-sided storage capacity can be increased by 66.2% from the original 4.7 GB. 7.81 GB.
  • Fig. 7 shows an embodiment in which the non-porous optical disk of the present invention is rectangular in shape.
  • the non-porous optical disc in this embodiment is rectangular in shape, wherein the area 10 is a decorative area in the disc, and the area 11 is an information recording area in the disc.
  • Fig. 8 shows an embodiment in which the outer shape of the non-porous optical disk of the present invention is of an arbitrary shape.
  • the shape of the non-porous optical disk in this embodiment is approximately a heart shape, wherein the area 10 is a decorative area in the disk, and the area 11 is an information recording area in the disk.
  • the material of the peripheral portion of the center of rotation of the non-porous optical disk of the present invention is the same as or different from the material of the other portions of the optical disk.
  • the area 12 is a peripheral portion of the center of rotation of the optical disc.
  • the material of the peripheral part of the center of rotation of the disc is not limited (such as magnetic material, metal material, etc.), and the distribution area is not limited (D2 can be within a reasonable range, such as a disc diameter of 80 mm, Then D2 can be 10 awake).
  • the material of the peripheral part of the center of rotation of the disc is different from that of other parts of the disc, and can be used for disc positioning, disc anti-counterfeiting and the like.

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  • Optical Recording Or Reproduction (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Description

一种用于数据存储和读取的无孔光盘 技术领域 本发明涉及一种用于数据存储和读取的无孔 ¾ ， 属于高密度 数字光存储技术领域， 特别涉及便携式光存储技术。
背景技术 光盘存储是高密度信息存储的主要手段之一。 光盘驱动器是最 常见和常用的光盘存储和读取设备。光盘驱动器可以由其中的光学系统、机电系 统以及电路系统， 糊诸存在光盘中的数字信息， 通过软硬件的解码和再现， 并通 过输出终端输出， 以及将数字信息通过软硬件的处理记录到光盘中。
以现有 80 mm光盘盘片为例，期 S向结构如图 1所示，可以看到光盘由基底 层 6、 信息层（主要由过渡区 2、 导入区 3、数据区 4、 导出区 5等组成)、 覆盖 层 7组成。在«：的信息层中， 片中心到直径 44 匪处都不能用于记录信 息， 而只能用于光盘的夹持、 固定和 度。 只有从直径 44匪到直径 78醒的 区域可以用于数据信息的存储。 数据存储区域的面积仅占光盘盘片总面积的 64.8%。
如图 1所示，对于任何已有的 80 mm光盘盘片，从盘片的中心到直径 44 mm 处， 根据不同的作用， 可以分为若干区域， 包括中心孔 1 (直径为 15 mm)和过 渡区 2，其中，过渡区包括：第一 度区（直径 15匪〜 16画)、第二过渡区（直 径 16 mn！〜 22 mm),夹持区（直径 22 mm〜33 mm)、第三 度区（直径 33 mm〜 44 mm)。从第三 度区结束 (直径为 44 mm)到光盘盘片的夕卜边缘 (直径 77 mm)， 是光盘的信息区。而根据不同的作用， 的信息区碰一步地被分为三个区域， 即导入区 3 (直径 44.6 mm〜48 mm)、数据区 4 (直径 48 mm〜76 mm)和导出 区 5 (直径 76 mm〜77 mm)。在导入区内主要记录有光盘的控制信息、出版信息、 版权内容等等；在数据区中可以存储和记录各种用户数据；导出区是保证光盘可 以连续平滑地读出麵的区域。而从导出区到光盘的 卜边缘（直径 80 mm)则 不被考虑作为数据存储或是其他用途。
从图 1可以看出，传统的有孔光盘由于考虑到盘片的夹持、固定、读取过渡、 读出 等等问题， 在盘片的中心必须具备一个国际标准为直径 15 mm的孔， 并且围绕该孔是各种过渡区和夹持区。而即使在有效信息区内部，也需要进一步 划分为导入区、 数据区和导出区。 因此， 真正有效的数据区仅仅从直径 48 mm 至直径 76 mm, 盘片的面积只有 54.25 %用于用户数据的存储， 存储容量被大大 浪费。 '
发明内容 本发明的目的是提出一种用于数据存储和读取的无孔光盘， 通 过改 «：片的结构，充分利用衡盘片中心的難存储区域，从而大幅度提高现 有盘片的容量， 以充分满足用户对存储介质的存储容量的要求。
本发明设计的一种用于数据存储和读取的无孔光盘， 包括基底层、 复盖层和 信息记录层， 所述的基底层、信息记录层和 层依次相互叠压在一起。
上述无孔光盘中， 所述的信息记录层从中心向园周依次为导出区、 数据区和 导入区， 也可以导入区、数据区和导出区。
上述无孔光盘中所述的信息记录层也可以全部为数据记录层。
上述无孔光盘的夕卜径尺寸为 5 mn！〜 120 mm;厚度为 0.2 mn！〜 3 mm;其中覆 盖层的厚度为 0.01 mm〜3 mm。
上述无孔光盘的数据区刻有紧密 ^钸的圆形信息轨迹或螺旋形信息轨迹。 上述无孔光盘还可以包括装饰区， 所述的装饰区设于光盘外围， 装饰区可以 为正方形、 圆形或其它任何几何形状。
上述无孔光盘旋转中心的外围部分的材料与光盘其它部分的材料相同， 或不 同。
本发明提出的用于数据存储和读取的无孔光盘， 在光盘中没有任何孔， 整张 光盘的全部区域都可以用于数据存储。这种无孔光盘可以是只读光盘、可一次写 入光盘、可多次擦写光盘等用于数据存储和读取的光盘。 由于本发明提出的无孔 光盘增加了光盘的数据存储区域， 因此具有更大的存储容量。
本发明提出的这种用于数据存储和读取的无孔光盘， 可以适用于普通光盘驱 动器的光学信息拾 记¾¾置或其他信息拾¾ /记录机构。
由于本发明提出的这种用于数据存储和读取的无孔光盘， 可以在实现同样数 据存储容量的前提下， 具备更加微小的光盘面积， 因此还拥有足够的存储发展潜 力， 例如， 面积更小但是容量足够的无孔光盘， 可应用于其他个人数字便携式消 费电子产品， 如手机、 PDA、 随身听、 随身看、 E-Book等等， 成为这些产品高 效可靠的夕卜存储手段， 从而占据更为广阔的消费电子市场。
本发明设计的光盘， 其结构、 «记 程和方式、 数据再现过程和方式， 适用于任何一种已有国际标准的光盘以及其他任何具有数据存储和读取功能的 光盘。
附图说明
图 1是已有普通光盘的外形剖面示意图。
图 2是本发明设计的无孔光盘的外形剖面示意图。
图 3至图 9为本发明的实施例的结构示意图。
图 1〜图 9中， 1是定位孔， 2是 度区， 3是导入区， 4是数据区， 5是导出 区， ό是基底层， 7是复盖层， 8是同心圆轨道， 9是螺旋型轨道， 10 片中的 装饰区， 11是盘片中的信息区， 12是光盘旋转中心的外围部分， HI为覆盖层的 厚度， H2为盘片的总厚度， D1为盘片的夕卜径， D2为光盘旋转中心外围部分的 外径。
具体实施方式
本发明设计的一种用于数据存储和读取的无孔光盘， 如图 1所示， 包括基底 层 6、 .m 7和信息记录层， 戶 的基底层 6、信息记录层和 m层 7依次相 互叠压在一起。所述的信息记录层从中心向园周依次为导出区 5、 数据区 4和导 入区 3，也可以从中心向园周依次为导入区 3、数据区 4和导出区 5，如图 3所示。
上述无孔光盘中所述的信息记录层也可以全部为数据记录层， 如图 4所示。 上述无孔光盘的夕卜径 D1为 5 mm〜120 mm; 厚度 H2为 0.2 mn！〜 3 mm; 其 中覆盖层的厚度 HI为 0.01 mm〜3 mm。
上述无孔光盘的 i ^区亥 |J有紧密 的圆形信息轨迹或螺旋形信息轨迹， 如 图 5和图 6所示。
上述无孔光盘还可以包括装饰区， 所述的装饰区设于光盘外围， 装饰区可以 为正方形， 如图 7所示； 圆形或其它任何几何形状， 图 8所示为心形。
上述无孔光盘旋转中心的外围部分的材料与光盘其它部分的材料相同， 或不 同。 图 9所示的无孔光盘旋转中心的材料与光盘其它部分的材料不同。
如图 2所示的本发明的无孔光盘， 从盘片的中心到外边缘， 不再划分诸如中 心孔、过渡区、夹持区等用于盘片固定、夹持和过渡的区域。从盘片的中心到光 盘的夕卜边缘（直径 77mm)， 全部为光盘的信息区。
图 2所示的光盘信息区根据不同的作用， 也进一步地被分为三个区域， 从光 盘的中心到外边缘， 依次为导出区 5、 数据区 4和导入区 3。 同样， 在导入区内 可以记录光盘的控制信息、 出版信息、版权内容等等； 在数据区中可以存储和记 录各种用户数据； 导出区是保证光盘可以连续平滑地读出数据的区域。
从导入区到光盘的 卜边缘（直径 80 mm)也不被考虑作为数据存储， 但是 可以作为其他用途， 如盘片的固定和夹持等等。
从图 2可以看出， 由于本发明提出的无孔光盘在盘片的中心不再考虑盘片的 夹持、 固定、读取过渡、读出过渡等问题， 因此盘片中不再需要任何孔， 以及围 绕该孔的各种过渡区和夹持区。从盘片中心幵始直到盘片边缘都可以用作有效信 息区。考虑到在有效信息区内部， 也有导入区、觀区和导出区的划分， 其中数 据区的范围至少可以从直径 5 匪至直径 76醒， 因此， 盘片面积至少有 89.86 %是可以用于用户数据存储的真正有效的数据区。对比图 2和图 1可见，采用无 孔的光盘， 其存储容量可以得到极大的提高。
显然， 图 2所示的盘片结构可以应用于任何一种已有的光盘。如应用到 CD 标准光盘中， 单面存储容量可以从原来的 650 MB提高 65%, 达到 1.07 GB; 而 应用到 DVD标准光盘中， 单面存储容量则可以从原来的 4.7 GB提高 65%， 达 到 7.75 GB。
如图 2所示的光盘， 由于在光盘的最外边缘是导入区， 在光盘的最内圈是导 出区， 因此数据从最外围向最内圈进行写入或读取。
图 2 出了无孔光盘的盘片结构： 盘片由基底层 6、信息层（主要由导入 区 3、 数据区 4、 导出区 5等组成）和覆盖层 7组成。
根据不同的应用领域， 本发明提出的这种无孔光盘的盘片厚度可以介于 0.2 mm〜3 mm之间， 例如 1.2mm; 盘片的夕卜径尺寸介于 5 mn！〜 120 mm之间， 例 如 78 mm; 覆盖层的厚度介于 0.01 mn！〜 3 mm之间， 例如 0.6 mm。 由于无孔光 盘的实施例都具有图 2所示出的无孔光盘的结构，因此下面在图 5和图 6所描述 的实施例中不再特别说明。
图 5为本发明的无孔光盘的一种圆形信息轨道的分布示意图。 如图所示， 在 本发明提出的无孔光盘的信息层中， 导入区、数据区、导出区中的信息轨道是以 盘片中心为圆心的无数直径不同的同心圆轨道 8。所有的数据信息存储在这些圆 形的信息轨道上。
图 6为无孔光盘的一种螺旋形信息轨道的分布示意图。 如图所示， 在本发明 提出的无孔光盘的信息层中， 导入区、隨区、导出区中的信息轨道是紧密排布 的螺旋型轨道 9。所有的数据信息存储在这些螺旋形的信息轨道上。
在图 3所示的本发明的一个实施例中， 在光盘的最外边缘是导出区 5， 在光 盘的最内圈是导入区 3， 导入区和导出区之间是数据区 4， 数据从最内圈向最外 围进行写 读取。而在图 4所示的本发明的实施例中，光盘中没有导入区和导 出区， 只有翻区 4， 麵可以从最外围向最内圈进行写入或读取， 也可以从最 内圈向最外围进行写入或读取。从图 4可以看出，由于本实施例中不再有任何孔、 围绕孔的各种过渡区和夹持区、导入区和导出区， 因此盘片中数据区的范围至少 可以从直径 l mm至直径 76 mm, 因此， 盘片面积至少有 90.23%可以用于用户 数据的存储， 是真正有效的数据区， 存储容量可以得到进一步的提高。
显然，图 4所示的盘片结构也可以应用于任何一种已有的光盘。如应用到 CD 标准光盘中， 单面存储容量可以从原来的 650 MB提高 66.2%, 达到 1.08 GB; 而应用到 DVD标准光盘中， 单面存储容量则可以从原来的 4.7 GB提高 66.2%, 达到 7.81 GB。
图 7所示为本发明的无孔光盘的夕卜形为矩形的一个实施例。 如图所示， 该实 施例中的无孔光盘的夕卜形为矩形， 其中， 区域 10为盘片中的装饰区， 区域 11为 盘片中的信息记录区。
图 8所示为本发明的无孔光盘的外形为任意形状的一个实施例。 如图所示， 该实施例中的无孔光盘的外形近似为心形， 其中， 区域 10为盘片中的装饰区， 区域 11为盘片中的信息记录区。
本发明无孔光盘旋转中心外围部分的材料， 如图 9所示， 与光盘其它部分的 材料相同， 或不同。 其中， 区域 12为光盘旋转中心的外围部分。根据不同的应 用， 光盘旋转中心外围部分的材料不限（如可以是磁性材料、 金属材料等)、 分 布区域不限（D2在合理的范围内即可， 如盘片夕卜径为 80 mm， 则 D2可以为 10 醒)。光盘旋转中心外围部分的材料与光盘其它部分材料不同，可以用于盘片定 位、盘片防伪等其它用途。

Claims

权 利 要 求
、 一种用于数据存储和读取的无孔光盘， 包括基底层、 复盖层和 信息记录层， 所述的基底层、 信息记录层和复盖层依次相互叠 压在一起。 、 如权利要求 1所述的无孔光盘， 其特征在于其中所述的信息记 录层从中心向园周依次为导出区、 数据区和导入区。
、 如权利要求 1所述的无孔光盘， 其特征在于其中所述的信息记 录层为数据记录层。 、 如权利要求 1所述的无孔光盘， 其特征在于所述的光盘的外径 尺寸为 5 腿〜 120 腿。
、 如权利要求 1所述的无孔光盘， 其特征在于所述的光盘的厚度 为 0. 2 腿〜 3 腿。 、 如权利要求 1所述的无孔光盘， 其特征在于所述的覆盖层的厚 度为 0. 01 醒〜 3 醒。
、 如权利要求 2所述的无孔光盘， 其特征在于其中所述的数据区 刻有紧密排布的圆形信息轨迹或螺旋形信息轨迹。
替换页（细则第 26条) 、 如权利要求 3所述的无孔光盘， 其特征在于其中所述的数据区 刻有紧密排布的圆形信息轨迹或螺旋形信息轨迹。
、 如权利要求 1所述的无孔光盘， 其特征在于该光盘还包括装饰 区， 所述的装饰区设于光盘外围， 装饰区为正方形、 圆形或其 它任何几何形状。 如权利要求 1所述的无孔光盘，其特征在于该光盘旋转中心的外 围部分的材料与光盘其它部分的材料相同或不同。
替换页（细则第 26条)
PCT/CN2004/000676 2003-06-23 2004-06-23 A non-hole optical disc for data storage and reading Ceased WO2004114293A1 (en)

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Publication number Priority date Publication date Assignee Title
CN1290933A (zh) * 1999-06-22 2001-04-11 索尼株式会社 光记录媒体和光盘盒
CN1393857A (zh) * 2001-06-21 2003-01-29 清华大学光盘国家工程研究中心 无孔光盘
WO2003017269A1 (fr) * 2001-08-10 2003-02-27 Tdk Corporation Procede de fabrication d'un disque optique
WO2003041078A1 (fr) * 2001-11-06 2003-05-15 Tdk Corporation Disque optique et procede de tournage d'un disque optique

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1290933A (zh) * 1999-06-22 2001-04-11 索尼株式会社 光记录媒体和光盘盒
CN1393857A (zh) * 2001-06-21 2003-01-29 清华大学光盘国家工程研究中心 无孔光盘
WO2003017269A1 (fr) * 2001-08-10 2003-02-27 Tdk Corporation Procede de fabrication d'un disque optique
WO2003041078A1 (fr) * 2001-11-06 2003-05-15 Tdk Corporation Disque optique et procede de tournage d'un disque optique

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