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    • 1. 发明授权
    • Laser power control in information recording device
    • 信息记录装置中的激光功率控制
    • US06320832B1
    • 2001-11-20
    • US09360970
    • 1999-07-27
    • Yoshihiro NakaoHaruhiko Izumi
    • Yoshihiro NakaoHaruhiko Izumi
    • G11B509
    • G11B7/1267G11B7/0079G11B11/10595
    • A method and device for controlling a power of pulsed light is provided, which is emitted by a light source, condensed by a object lens and irradiated to a recording medium for recording information in the recording medium. In order to use the power more efficiently under the limitation of the maximum output of the light source and the maximum efficiency of condensing light in the optical system, the method includes steps of performing test writing with the pulsed light having a fixed bottom power and variable peak power, calculating an optimum average power in accordance with the bottom power and the peak power of the optimum condition obtained by the test writing step, and recalculating the peak power and the bottom power in accordance with the optimum average power so that the peak power is decreased and the bottom power is increased.
    • 提供了一种用于控制脉冲光功率的方法和装置,其由光源发射,由物镜聚光并照射到用于将信息记录在记录介质中的记录介质。 为了在光源的最大输出的限制和光学系统中的聚光的最大效率的限制下更有效地使用电力,该方法包括以下步骤:用具有固定底部功率和可变的功率的脉冲光执行测试写入 峰值功率,根据通过测试写入步骤获得的最佳条件的底部功率和峰值功率来计算最佳平均功率,并且根据最佳平均功率重新计算峰值功率和底部功率,使得峰值功率 降低,底部功率增加。
    • 10. 发明申请
    • INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD
    • 信息处理设备和信息处理方法
    • US20070300126A1
    • 2007-12-27
    • US11677216
    • 2007-02-21
    • Yoshihiro NakaoIsao Kimura
    • Yoshihiro NakaoIsao Kimura
    • H03M13/09
    • H03M13/05H04L1/0041H04L1/0057H04L2001/0097
    • An information processing device implements error control including at least one of error detection and error correction. The device comprises an information bit sequence acquiring unit and an encoder. The information bit sequence acquiring unit acquires an information bit sequence. The encoder generates a redundant bit sequence enabling execution of error control of the entire information bit sequence, the redundant bit sequence being generated through encoding by a predetermined code based on the information bit sequence and generates a codeword that includes the information bit sequence and the redundant bit sequence. The encoder generates the redundant bit sequence in such a way that one or more bits contained in the redundant bit sequence each functions as a parity bit for one of a plurality of divided information bit sequences produced by dividing the information bit sequence.
    • 信息处理设备实现包括错误检测和纠错中的至少一个的错误控制。 该装置包括信息比特序列获取单元和编码器。 信息比特序列获取单元获取信息比特序列。 编码器产生冗余比特序列,使得能够执行整个信息比特序列的错误控制,该冗余比特序列是通过基于信息比特序列的预定码进行编码而产生的,并产生包括信息比特序列和冗余的码字 位序列。 编码器以这样的方式生成冗余比特序列,使得包含在冗余比特序列中的一个或多个比特各自用作通过划分信息比特序列而产生的多个划分的信息比特序列之一的奇偶校验位。