会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Data recording and/or reproducing apparatus and method for detecting sector defects
    • 用于检测扇区缺陷的数据记录和/或再现装置和方法
    • US06483789B1
    • 2002-11-19
    • US09470355
    • 1999-12-22
    • Yoshiyasu KubotaTakayuki SugawaraTakahiro Kawauchi
    • Yoshiyasu KubotaTakayuki SugawaraTakahiro Kawauchi
    • G11B509
    • G11B20/1883G11B5/012
    • A method for detecting a defective sector on a recording medium in a method for recording and/or reproducing data for the signal recording medium. A read gate is opened to reproduce data from a data field at a pre-set timing derived from a timing reference signal obtained on detecting a servo timing mark recorded in a servo field. If the timing reference signal has not been detected with success, the read gate is opened at a timing obtained based on a detection signal of a previously detected servo timing mark to reproduce the data from the data field. In detecting the defective sector, the state of deviation between the timing of opening the read gate and the data field is detected to detect the defective sector of the disc.
    • 一种用于在用于记录和/或再现用于信号记录介质的数据的方法中的用于检测记录介质上的缺陷扇区的方法。 一个读门被打开,以从在检测到伺服字段中记录的伺服定时标记获得的定时参考信号得到的预定定时从数据字段再现数据。 如果定时参考信号未成功检测到,则读门在基于先前检测到的伺服定时标记的检测信号获得的定时被打开,以从数据场再现数据。 在检测到缺陷扇区时,检测打开读取门的时间与数据场之间的偏差状态,以检测盘的缺陷扇区。
    • 6. 发明授权
    • Disk device with improved error-correction capability
    • 具有改进纠错能力的磁盘设备
    • US07080306B1
    • 2006-07-18
    • US09511931
    • 2000-02-24
    • Takayuki SugawaraHiroki HirashimaIsao AsanoKyoichi Shirane
    • Takayuki SugawaraHiroki HirashimaIsao AsanoKyoichi Shirane
    • G11B20/18
    • G11B20/1803
    • A disk device for performing error-correction processing is loaded with a high-reliability disk to which a C1 code as a low-level error-correction code (ECC) is added for every sector, and a C2 code as a high-level ECC is added for every plurality of sectors. A host computer includes a device driver corresponding to the high-reliability disk. When data written to the high-reliability disk is read, low-level error-correction is performed based on the C1 code in units of one block corresponding to one sector, and the corrected data is notified to the host computer. Simultaneously, the C2 code along with the data for a plurality of blocks is loaded, and high-level error correction based on the C2 code is thereby performed.
    • 用于进行纠错处理的盘装置装载有高可靠性盘,作为低级错误校正码(ECC)的C1码被添加到每个扇区,并且C2码作为高级ECC 为每个多个扇区添加。 主计算机包括对应于高可靠性盘的设备驱动器。 当读取写入高可靠性磁盘的数据时,以对应于一个扇区的一个块为单位的C1代码执行低级错误校正,并将校正后的数据通知给主计算机。 同时,C2代码与多个块的数据一起被加载,由此执行基于C2代码的高级错误校正。
    • 7. 发明授权
    • Recording/reproduction system
    • 录音/复制系统
    • US06223321B1
    • 2001-04-24
    • US09129496
    • 1998-08-05
    • Masahiro NasuTakayuki Sugawara
    • Masahiro NasuTakayuki Sugawara
    • G11B2018
    • H03M13/1515G11B20/1833H03M13/29H03M13/2909
    • A recording/reproduction device includes a reading mechanism to read information data stored in a floppy disk and constituted by a plurality of byte data and first inspection data and second inspection data to detect an error of the information data. First and second calculation mechanism calculate a first and second syndrome value from the byte data and the first and second inspection data, respectively. First and second error correction mechanisms perform error correction for the information data on the basis of the first and second syndrome value, respectively. A computer includes the second error correction mechanism. Because the second error correction is not performed in the floppy disk drive, the capacity of a storage unit is decreased, a memory in the floppy disk drive can be considerably smaller than that of a conventional floppy disk drive, and the cost of the floppy disk drive can be reduced. In addition, since secondary correction is not performed in the floppy disk drive, an increase in data transfer rate from the floppy disk drive to the computer can be realized.
    • 记录/再现装置包括读取机构,用于读取存储在软盘中并由多个字节数据和第一检查数据构成的信息数据和第二检查数据,以检测信息数据的错误。 第一和第二计算机构分别从字节数据和第一和第二检查数据计算第一和第二校正值。 第一和第二纠错机构分别基于第一和第二综合征值对信息数据进行纠错。 计算机包括第二纠错机构。 由于在软盘驱动器中不执行第二纠错,所以存储单元的容量降低,软盘驱动器中的存储器可以比常规软盘驱动器的存储器小得多,并且软盘的成本 驱动可以减少。 此外,由于在软盘驱动器中不执行二次校正,因此可以实现从软盘驱动器到计算机的数据传输速率的增加。