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    • 94. 发明授权
    • Objective optical element and optical pickup apparatus
    • 物镜光学元件和光学拾取装置
    • US07512055B2
    • 2009-03-31
    • US11133349
    • 2005-05-20
    • Hiroshi HirayamaTohru Kimura
    • Hiroshi HirayamaTohru Kimura
    • G11B7/00
    • G11B7/1353G11B7/1275G11B7/1374G11B7/1378G11B7/139G11B7/13922G11B2007/0006G11B2007/13727
    • An objective optical element for use in an optical pickup apparatus having: a first light source for emitting a first light flux; a second light source for emitting a second light flux; an objective optical element, the objective optical element includes: an optical surface including a common area and an exclusive area; and a wavelength selective film formed on at least one of the common area and the exclusive area; wherein the common area transmits the first light flux which is formed into a converged spot on the information recording surface, and transmits the second light flux which is formed into a converged spot on the information recording surface, and the exclusive area transmits the first light flux which is formed into a converged spot on the information recording surface, and transmits the second light flux which is not formed into a converged spot on the information recording surface.
    • 一种用于光拾取装置的物镜光学元件,具有:第一光源,用于发射第一光束; 用于发射第二光通量的第二光源; 物镜光学元件包括:包括公共区域和专用区域的光学表面; 以及形成在所述公共区域和所述专有区域中的至少一个上的波长选择膜; 其中,所述公共区域将形成为聚光点的所述第一光束透射到所述信息记录面上,并将形成为聚光点的所述第二光束透射到所述信息记录面上,所述专有区域透射所述第一光通量 其在信息记录表面上形成为聚光点,并将未形成会聚点的第二光束透射到信息记录表面上。
    • 97. 发明申请
    • Digital signal forming method, disc recording media using the same, and reproducing method thereof
    • 数字信号形成方法,使用其的盘记录介质及其再现方法
    • US20050149828A1
    • 2005-07-07
    • US11041119
    • 2005-01-21
    • Hiroshi Hirayama
    • Hiroshi Hirayama
    • G11B20/12G11B7/0045G11B7/007G11B20/10G11B20/18G11C29/00H03M13/00
    • G11B20/1809
    • There are provided a digital signal forming method, a disc recording medium for high density recording and a method of reproducing a digital signal for encoding of the error correction code of the related art and improving the error correction capability without any requirement in change of the number of codes. A plurality of correction blocks are formed by forming, a plurality of sector data adding the address information indicating the position on the recording disc to the main data of a plurality of lines in every constant amount of recording information, sharing the main data of each sector data into a plurality of sector data blocks and adding the first correction code to correct the error in the line direction of data and the second correction code to correct the error in the vertical direction of data to each of the divided sector data blocks. Moreover, a plurality of lines of the first correction codes corresponding to the main data of each line of each sector data interleaved to a plurality of correction blocks are allocated with continuation to a plurality of main data of each sector data and each line of a plurality of second correction codes is sequentially allocated among a plurality of sector data.
    • 提供了数字信号形成方法,用于高密度记录的盘记录介质和再现用于编码现有技术的纠错码的数字信号的方法,并且改进了纠错能力,而不需要改变数量 的代码。 多个校正块通过形成多个扇区数据,每个扇区数据将表示记录盘上的位置的地址信息与每个恒定量的记录信息中的多条行的主数据相加,从而共享每个扇区的主数据 将数据分组成多个扇区数据块,并添加第一校正码以校正数据的行方向上的误差和第二校正码,以将数据的垂直方向的误差校正到每个划分的扇区数据块。 此外,对应于交织到多个校正块的每个扇区数据的每行的主要数据的第一校正码的多行被分配给每个扇区数据的多个主数据和多个每个扇区数据的每一行 第二校正码的顺序分配在多个扇区数据中。