Frequency demodulating circuit, optical disk apparatus thereof and preformating device
    1.
    发明授权
    Frequency demodulating circuit, optical disk apparatus thereof and preformating device 失效
    频率解调电路,其光盘装置和预处理装置

    公开(公告)号:US06678223B2

    公开(公告)日:2004-01-13

    申请号:US10244402

    申请日:2002-09-17

    IPC分类号: G11B7005

    摘要: An optical disk apparatus for driving an optical disk on which a groove wobble corresponding to a signal acquired from frequency modulation of biphase modulated address information, and a mark for representing phase information placed inside the wobble are preformatted, and having the biphase bit count “a” (“a” is a natural number) between two of the adjacent marks, and the channel bit count “n” (“n” is a natural number) between two of the adjacent marks. The apparatus includes first clock signal production device for generating a first clock signal utilizing an “n” frequency multiple of the reproduction signal of the clock mark, wobble signal reproduction device for reproducing from the optical disk a wobble signal corresponding to the groove wobble, and frequency demodulation device for acquiring the address information by frequency demodulation of the wobble signal. The frequency demodulation device has a second clock signal generator for generating a second clock signal by frequency dividing a data clock signal supplied from the first clock signal reproduction device by 1/M(M - - - n/(a·s)) in which a clock “s” (“s” is a natural number) is an oversampling value of the biphase bit, a waveform shaping unit for acquiring binary values by waveforming the wobble signal, and a detector for acquiring the address information by processing the second clock signal using the binary signal.

    摘要翻译: 一种光盘装置,用于驱动光盘,其上对应于从双相调制地址信息的频率调制获取的信号的槽摆动,以及用于表示放置在摆动内的相位信息的标记,并且具有双相位计数“a 两个相邻标记之间的“(”a“是自然数),并且两个相邻标记之间的通道位数”n“(”n“是自然数)。 该装置包括利用时钟标记的再现信号的“n”倍频产生第一时钟信号的第一时钟信号产生装置,用于从光盘再现与凹槽摆动相对应的摆动信号的摆动信号再现装置,以及 频率解调装置,用于通过摆动信号的频率解调获取地址信息。 频率解调装置具有第二时钟信号发生器,用于通过将从第一时钟信号再现装置提供的数据时钟信号分频1 / M(M - - n /(as))来产生第二时钟信号,其中时钟 “s”(“s”是自然数)是双相位的过采样值,波形整形单元,用于通过波形摆动信号来获取二进制值,以及检测器,用于通过处理第二时钟信号来获取地址信息,该检测器使用 二进制信号。

    Frequency demodulating circuit, optical disk apparatus thereof and preformating device
    3.
    发明授权
    Frequency demodulating circuit, optical disk apparatus thereof and preformating device 失效
    频率解调电路,其光盘装置和预处理装置

    公开(公告)号:US06310851B1

    公开(公告)日:2001-10-30

    申请号:US09660889

    申请日:2000-09-13

    IPC分类号: G11B700

    摘要: A frequency demodulating circuit, optical disk and preformatting device having a decoder for decoding a bit “0” and a bit “1” for reproducing address information recorded as a wobble groove. The decoder determines whether an output is a digital “1” or a digital “0” so that even if the waveform of the reproduced signal is erratic or unstable due to a defect, a digital “1” or a digital “0” can be correctly identified by utilizing window pulses. Changes in the slop of a zero cross point of the groove wobble are prevented from occurring by making the groove wobble amplitude fluctuate according to the signal frequency modulation which also greatly reduces jitter and allowing satisfactory acquisition of the address information. Oversampling clock signals of biphase bits are generated by frequency division of data clock signals. Since demodulation is accomplished with a single phase lock loop circuit in the data system using clock signals for both the data and the addresses, the configuration can be made extremely simple. By means of polarity of the playback signal mark having phase information, it is determined whether the beam that scans the optical disk is above the land or above the groove. The marks containing phase information are formed on the base disk surface solely by the on and off control of the paired cutting beams with respect to the direction of the time axis, for easy preformatting of a mark to permit acquiring (phase) position information with high precision.

    摘要翻译: 一种频率解调电路,光盘和预格式化装置,其具有用于解码位“0”的解码器和用于再现记录为摆动槽的地址信息的位“1”。 解码器确定输出是数字“1”还是数字“0”,使得即使再现信号的波形由于缺陷而不稳定或不稳定,数字“1”或数字“0”可以是 通过利用窗口脉冲正确识别。 通过根据信号频率调制使槽摆动幅度波动,防止槽摆动的零交叉点的变化发生,这也大大降低了抖动,并且令人满意地获取了地址信息。 双相位的过采样时钟信号由数据时钟信号的分频产生。 由于使用数据系统和地址的时钟信号的数据系统中的单相锁定环电路来实现解调,所以可以使结构非常简单。 通过具有相位信息的重放信号标记的极性,确定扫描光盘的光束是否在凹槽之上或之上。 包含相位信息的标记仅通过相对于时间轴的方向的成对的切割光束的开和关控制形成在基盘表面上,以便容易地预格式化标记以允许获取(相位)位置信息 精确。

    Recording medium, recording/reproduction device, and recording/reproduction method
    4.
    发明申请
    Recording medium, recording/reproduction device, and recording/reproduction method 失效
    记录介质,记录/再现装置和记录/再现方法

    公开(公告)号:US20050160440A1

    公开(公告)日:2005-07-21

    申请号:US10508406

    申请日:2004-01-30

    摘要: A recording medium enabling type determination and writing possibility determination for various types of disks. Opening and closing means for opening and closing a detection hole of a cartridge forms a plane substantially horizontal level with a reference plane of the cartridge at a position of the detection hole when the detection hole is in a closed state. The cartridge has at least a first detection hole and a second detection hole formed therein. The second detection hole (H1) is opened and closed by the opening and closing means, and the first detection hole (H0) is in an open state at all times. A disk drive apparatus or a disk determining method determines, together with a disk type, determining information contents (for example writing possibility) based on one or a plurality of detection holes formed in the cartridge, on the basis of an open/closed state of the detection hole and a result of the disk type using a signal based on reflected light from the loaded recording medium.

    摘要翻译: 一种能够对各种类型的盘进行类型确定和写入可能性确定的记录介质。 当检测孔处于关闭状态时,用于打开和关闭盒的检测孔的打开和关闭装置在检测孔的位置处形成具有与盒的基准平面基本水平的平面。 该盒具有形成在其中的至少第一检测孔和第二检测孔。 第二检测孔(H 1)由打开和关闭装置打开和关闭,并且第一检测孔(H 0)始终处于打开状态。 磁盘驱动装置或磁盘确定方法基于盘的类型,基于打开/关闭状态确定基于形成在盒中的一个或多个检测孔的信息内容(例如书写可能性) 检测孔和使用基于来自加载的记录介质的反射光的信号的盘类型的结果。

    Recording medium, recording/reproduction device, and recording/reproduction method
    5.
    发明申请
    Recording medium, recording/reproduction device, and recording/reproduction method 失效
    记录介质,记录/再现装置和记录/再现方法

    公开(公告)号:US20060031859A1

    公开(公告)日:2006-02-09

    申请号:US11246363

    申请日:2005-10-11

    IPC分类号: G11B17/04

    摘要: A recording medium enabling type determination and writing possibility determination for various types of disks. Opening and closing means for opening and closing a detection hole of a cartridge forms a plane substantially horizontal level with a reference plane of the cartridge at a position of the detection hole when the detection hole is in a closed state. The cartridge has at least a first detection hole and a second detection hole formed therein. The second detection hole (H1) is opened and closed by the opening and closing means, and the first detection hole (H0) is in an open state at all times. A disk drive apparatus or a disk determining method determines, together with a disk type, determining information contents (for example writing possibility) based on one or a plurality of detection holes formed in the cartridge, on the basis of an open/closed state of the detection hole and a result of the disk type using a signal based on reflected light from the loaded recording medium.

    摘要翻译: 一种能够对各种类型的盘进行类型确定和写入可能性确定的记录介质。 当检测孔处于关闭状态时,用于打开和关闭盒的检测孔的打开和关闭装置在检测孔的位置处形成具有与盒的基准平面基本水平的平面。 该盒具有形成在其中的至少第一检测孔和第二检测孔。 第二检测孔(H 1)由打开和关闭装置打开和关闭,并且第一检测孔(H 0)始终处于打开状态。 磁盘驱动装置或磁盘确定方法基于盘的类型,基于打开/关闭状态确定基于形成在盒中的一个或多个检测孔的信息内容(例如书写可能性) 检测孔和使用基于来自加载的记录介质的反射光的信号的盘类型的结果。

    Disc detection device and associated method
    7.
    发明授权
    Disc detection device and associated method 失效
    光盘检测装置及相关方法

    公开(公告)号:US07224656B2

    公开(公告)日:2007-05-29

    申请号:US11246363

    申请日:2005-10-11

    IPC分类号: G11B7/00

    摘要: A disc drive apparatus is provided which determines a recording medium enabling type and recordability for various types of discs. The discs are housed in a cartridge and each cartridge has at least a first and second detection hole formed therein. The second detection hole (H1) is variably opened and closed by an opening/closing device, and the first detection hole (H0) is in an open state at all times. The disc drive apparatus determines the disc type using a light signal reflected from the loaded recording medium. The disc drive apparatus also determines disc determining parameters (for example, recordability of a disc) based on information received about the disc type and the open/closed state of one or more detection holes formed in the cartridge.

    摘要翻译: 提供一种盘驱动装置,其确定能够对各种类型的盘进行类型和记录的记录介质。 盘被容纳在盒中,并且每个盒具有至少形成在其中的第一和第二检测孔。 第二检测孔(H 1)由打开/关闭装置可变地打开和关闭,并且第一检测孔(H 0)始终处于打开状态。 盘驱动装置使用从加载的记录介质反射的光信号来确定光盘类型。 盘驱动装置还基于接收到的关于盘类型的信息和形成在盒中的一个或多个检测孔的打开/关闭状态来确定盘确定参数(例如,盘的可记录性)。

    Magnetic disk producing method
    9.
    发明授权
    Magnetic disk producing method 失效
    磁盘制作方法

    公开(公告)号:US07471478B2

    公开(公告)日:2008-12-30

    申请号:US11355460

    申请日:2006-02-16

    申请人: Shinichi Nakao

    发明人: Shinichi Nakao

    IPC分类号: G11B5/86

    CPC分类号: G11B5/865 G11B5/82 G11B5/855

    摘要: A magnetic disk can be magnetized simply and in a short time. A magnetic disk producing method produces a magnetic disk having a central hole, an outer radius, a plurality of annular recording tracks formed in a direction from the central hole toward the outer radius, each recording track including a plurality of sectors, and a recess formed between adjacent recording tracks to a predetermined depth. The method includes providing a magnetizing master disk magnetized in a predetermined pattern of alternating N and S polarities extending in a direction from a center of the master disk toward an outer radius thereof; and superposing the master disk on the magnetic disk to magnetically transcribe a magnetic signal to the recording tracks based on the predetermined pattern.

    摘要翻译: 磁盘可以简单地在短时间内被磁化。 磁盘制造方法产生具有中心孔,外半径,从中心孔朝向外半径的方向形成的多个环形记录磁道的磁盘,每个记录磁道包括多个扇区,形成凹部 在相邻记录轨道之间延伸到预定深度。 该方法包括提供磁化母磁盘,其以从母盘的中心朝向其外半径的方向延伸的交替的N和S极性的预定图案被磁化; 并且将主盘叠加在磁盘上以基于预定图案将磁信号磁记录到记录轨道。

    Light spot advancing direction judging device and method, optical head device control device and method, and optical disk recording/reproducing device
    10.
    发明授权
    Light spot advancing direction judging device and method, optical head device control device and method, and optical disk recording/reproducing device 失效
    光点前进方向判断装置和方法,光头装置控制装置和方法以及光盘记录/再现装置

    公开(公告)号:US07065023B2

    公开(公告)日:2006-06-20

    申请号:US10240001

    申请日:2002-02-08

    IPC分类号: G11B7/00

    摘要: A device and a method for judging the radial moving direction of light spots formed on the signal recording surface of an optical disc having grooves of two types, which are different from each other in terms of depth and which are arranged along a recording track that is a land of the optical disc. The judging section of the device judges the moving direction of the main spot on the basis of binarized data of a difference signal of the main spot and binarized data of a difference signal of one of spots on the side. With this arrangement, the moving direction of the light spots relative to a radial direction of the optical disc can be determined only by using difference signals without using any sum signal.

    摘要翻译: 一种用于判断形成在光盘的信号记录表面上的光斑的径向移动方向的装置和方法,该光盘具有在深度方面彼此不同的两种凹槽,并且沿着记录轨迹布置 光盘的一片土地。 设备的判断部分基于主点的差分信号的二值化数据和侧面中的一个点的差分信号的二值化数据来判断主点的移动方向。 通过这种布置,光斑相对于光盘的径向方向的移动方向只能通过使用差信号而不使用任何和信号来确定。