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    • 3. 发明授权
    • Write once optical disc recording apparatus with reduced data error rate
because the value of asymmetry is equalized as additional data is
recorded thereon
    • 由于在其上记录了附加数据,因此不均匀性的值被均等化,因此以一个数据差错率降低的光盘记录装置
    • US5563862A
    • 1996-10-08
    • US452151
    • 1995-05-26
    • Osamu Udagawa
    • Osamu Udagawa
    • G11B7/0045G11B20/10G11B7/00
    • G11B20/10212G11B7/0045
    • An apparatus for recording data signals onto an optical recording medium is disclosed. The apparatus includes a unit for radiating a laser beam onto the optical recording medium, a photo-electric converting unit for converting the laser beam reflected from the optical recording medium into an electrical signal, a first detection unit for detecting whether or not the data signals are recorded on the optical recording medium, a second detection unit for detecting a value of asymmetry based upon an output of the photo-electric converting unit, and a control unit for detecting, prior to recording of the data signals on the optical recording medium, whether or not the data signals are recorded in a region proximate to a region of the optical recording medium in which the data signals are to be recorded. The control unit sets a value of asymmetry detected by the second detection unit based on the data signal reproduced from the proximate region as being a target value of asymmetry when the data signals are recorded in the proximate region. The control unit also sets a predetermined value of asymmetry as the target value of asymmetry when data signals are not recorded in the proximate region.
    • 公开了一种用于将数据信号记录到光记录介质上的装置。 该装置包括用于将激光束照射到光学记录介质上的单元,用于将从光学记录介质反射的激光束转换为电信号的光电转换单元,用于检测数据信号 被记录在光记录介质上,第二检测单元,用于基于光电转换单元的输出检测不对称值;以及控制单元,用于在记录光学记录介质上的数据信号之前, 数据信号是否记录在其中要记录数据信号的光记录介质的区域附近的区域中。 当数据信号被记录在邻近区域中时,控制单元基于从近邻区域再现的数据信号将不对称性的值设置为不对称的目标值。 当数据信号未记录在邻近区域中时,控制单元还将不对称的预定值设置为不对称的目标值。
    • 7. 发明授权
    • File name conversion
    • 文件名转换
    • US6144969A
    • 2000-11-07
    • US930820
    • 1998-01-08
    • Tatsuya InokuchiOsamu UdagawaYasuyoshi KanekoKazuhisa Taira
    • Tatsuya InokuchiOsamu UdagawaYasuyoshi KanekoKazuhisa Taira
    • G06F17/30
    • G06F17/30123Y10S707/99931
    • File name conversion method, and apparatus, for converting a first file name that can be distinguished by a given operating system into a second file name that can be distinguished both by the given operating system and other operating systems. The method and apparatus insure that the first and second file names do not already exist on an associated recording medium prior to recording the first file name on the recording medium and prior to converting the first file name to the second file name. Also provided is a recording medium on which is recorded a file conversion program for converting the first file name to the second file name and for searching whether or not the file names exist on the recording medium.
    • PCT No.PCT / JP97 / 00321 Sec。 371日期1998年1月8日 102(e)日期1998年1月8日PCT提交1997年2月7日PCT公布。 公开号WO97 / 29426 日期1997年8月14日文件名称转换方法和装置,用于将可由特定操作系统区分的第一文件名转换成可由给定操作系统和其他操作系统区别的第二文件名。 该方法和装置确保在将第一文件名称记录在记录介质上之前以及在将第一文件名转换为第二文件名之前,第一和第二文件名不存在于相关联的记录介质上。 还提供了一种记录介质,其上记录有用于将第一文件名转换为第二文件名的文件转换程序,并用于搜索文件名是否存在于记录介质上。