Write once optical disc recording apparatus with reduced data error rate
because the value of asymmetry is equalized as additional data is
recorded thereon
    2.
    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 失效
    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

    公开(公告)号:US5563862A

    公开(公告)日:1996-10-08

    申请号:US452151

    申请日:1995-05-26

    申请人: Osamu Udagawa

    发明人: Osamu Udagawa

    IPC分类号: G11B7/0045 G11B20/10 G11B7/00

    CPC分类号: G11B20/10212 G11B7/0045

    摘要: 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.

    摘要翻译: 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。

    Method and apparatus for recording data using multiple buffers
    4.
    发明授权
    Method and apparatus for recording data using multiple buffers 失效
    使用多个缓冲器记录数据的方法和装置

    公开(公告)号:US6134626A

    公开(公告)日:2000-10-17

    申请号:US959364

    申请日:1997-10-28

    摘要: In an information recording method and its device to sequentially write data on a recording medium on a fixed data basis, a command to write the first data formed of the fixed data basis is transmitted from the fixed file system to the writing means of the recording medium, and an actual write result of the first data is returned from the writing means to the file system delaying for the fixed number of commands from the time of transmitting the first data. By inserting link blocks on the data sequence to be recorded on the recording medium and sequentially writing a plurality of packets, the write position shift can be prevented, and by returning an actual write result delaying for the predetermined number of commands, the data writing that is error retrievable using the write cache can be realized.

    摘要翻译: 在以固定数据为基础的顺序地将数据写入记录介质的信息记录方法及其装置中,将从固定数据基础形成的第一数据写入的命令从固定文件系统发送到记录介质的写入装置 并且从发送第一数据时起,第一数据的实际写入结果从写入装置返回到文件系统延迟固定数量的命令。 通过在要记录在记录介质上的数据序列上插入链接块并顺序地写入多个分组,可以防止写入位置偏移,并且通过返回预定数量的命令的实际写入结果延迟, 是可以使用写缓存的错误检索来实现的。

    Data recording apparatus adapted for recording data signals onto an
optical recording medium
    7.
    发明授权
    Data recording apparatus adapted for recording data signals onto an optical recording medium 失效
    数据记录装置,用于将数据信号记录到光记录介质上

    公开(公告)号:US5737289A

    公开(公告)日:1998-04-07

    申请号:US586703

    申请日:1996-01-26

    申请人: Osamu Udagawa

    发明人: Osamu Udagawa

    摘要: In this invention, a partition within a test write area on an optical disc is divided into a plurality of sub-partitions to record test write data by different plural recording laser drive powers within respective subcode frames constituting the sub-partitions to determine an optimum laser drive power for recording from an average value of asymmetry values obtained by reproducing respective data recorded by the plural laser drive powers, thereby making it possible to carry out OPC operations of which number is more than 100 which is the maximum number of the OPC operations in the prior art. Accordingly, also in the case where data recording operations more than the maximum number of the conventional data recording operations, i.e., 100 times of operations are carried out, it is possible to maintain quality of recording data.

    摘要翻译: PCT No.PCT / JP95 / 01067 Sec。 371日期1996年1月26日 102(e)日期1996年1月26日PCT提交1995年5月31日PCT公布。 公开号WO95 / 33261 日期1995年12月7日在本发明中,将光盘上的测试写入区域内的分区划分成多个子分区,以通过构成子分区的各个子码帧内的不同的多个记录激光驱动电力来记录测试写入数据 从通过再现由多个激光驱动功率记录的各个数据而获得的不对称值的平均值确定用于记录的最佳激光驱动功率,从而可以执行数量大于100的作为最大数量的OPC操作 的现有技术中的OPC操作。 因此,在进行超过常规数据记录操作的最大数量,即100次操作的数据记录操作的情况下,也可以保持记录数据的质量。