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    Semiconductor laser control method and semiconductor laser control device
    3.
    发明授权
    Semiconductor laser control method and semiconductor laser control device 有权
    半导体激光控制方法和半导体激光控制装置

    公开(公告)号：US06728178B2

    公开(公告)日：2004-04-27

    申请号：US09983402

    申请日：2001-10-24

    申请人： Kenji Koishi ,  Yoshiyuki Miyabata ,  Makoto Usui ,  Kohjyu Konno ,  Yasuhiro Ueki ,  Tomonori Ueno ,  Yutaka Osada ,  Toru Fujimoto

    发明人： Kenji Koishi ,  Yoshiyuki Miyabata ,  Makoto Usui ,  Kohjyu Konno ,  Yasuhiro Ueki ,  Tomonori Ueno ,  Yutaka Osada ,  Toru Fujimoto

    IPC分类号： H01S310

    CPC分类号： G11B7/1263 ,  G11B7/1267

    摘要： Playback signal amplitude drops and continuity of the signal track amplitude is lost at the beginning the data recording area when data is incrementally written to optical discs such as DVD-R or DVD-RW media. Feed-forward control quickly settles semiconductor laser recording power to the target power level immediately after an incremental recording starts. While recording continues, feedback control maintains laser power at a desired recording power level even when the required current supply varies due to the temperature characteristics of the semiconductor laser when recording lasts for an extended period of time. A semiconductor laser control method and semiconductor laser control device thereby maintain laser power at a stable target recording power level quickly and for as long as recording continues.

    摘要翻译： 当数据被递增地写入诸如DVD-R或DVD-RW光盘的光盘时，数据记录区开始时，回放信号幅度下降和信号轨迹幅度的连续性丢失。 增量记录开始后，前馈控制可以快速将半导体激光记录功率稳定在目标功率水平。 在继续记录的同时，即使当所需的电流源由于半导体激光器的温度特性在长时间持续时的温度特性而变化时，反馈控制将激光功率维持在期望的记录功率水平。 半导体激光器控制方法和半导体激光器控制装置能够使激光功率保持在稳定的目标记录功率水平，并且只要持续进行记录。

    Backlight device
    5.
    发明授权
    Backlight device 有权
    背光装置

    公开(公告)号：US08596850B2

    公开(公告)日：2013-12-03

    申请号：US13264352

    申请日：2010-04-05

    申请人： Naoto Hirohata ,  Yasuhiro Ueki ,  Nobuyoshi Yamagishi ,  Takuya Kakinuma ,  Mikio Okumura

    发明人： Naoto Hirohata ,  Yasuhiro Ueki ,  Nobuyoshi Yamagishi ,  Takuya Kakinuma ,  Mikio Okumura

    IPC分类号： F21V7/04

    CPC分类号： G02B6/0085 ,  G02B6/0031 ,  G02B6/0038 ,  G02B6/0068 ,  G02B6/0073 ,  G02B6/0091

    摘要： A backlight device wherein LEDs which are arranged side by side at a first arrangement interval (P1) are provided to each LED unit. The LED units are mounted to a flexible board at a second arrangement interval. A light guide plate is disposed in such a manner that an end surface thereof is spaced from the LEDs by a distance (H). The light guide plate is disposed so as to satisfy the following relationship: first arrangement interval (P1)≦distance (H)≦second arrangement interval (P2). Specifically, the LEDs are arranged side by side in such a manner that the first arrangement interval (P1) is not less than 0.1 mm but not greater than 3 mm and the second arrangement interval (P2) is not less than 5 mm but not greater than 15 mm. The light guide plate is disposed in such a manner that the distance (H) is not less than 1 mm but not greater than 7 mm.

    摘要翻译： 背光装置，其中以第一布置间隔（P1）并排布置的LED被提供给每个LED单元。 LED单元以第二布置间隔安装到柔性板。 导光板以其端面与LED间隔距离（H）的方式设置。 导光板配置为满足以下关系：第一配置间隔（P1）@间隔（H）@第二配置间隔（P2）。 具体地说，LED以这样的方式并排布置，使得第一布置间隔（P1）不小于0.1mm但不大于3mm，并且第二布置间隔（P2）不小于5mm但不大于 超过15毫米。 导光板配置成使得距离（H）不小于1mm但不大于7mm。

    INFORMATION RECORDING MEDIUM, AND METHOD AND APPARATUS FOR RECORDING A SIGNAL THEREON
    6.
    发明申请
    INFORMATION RECORDING MEDIUM, AND METHOD AND APPARATUS FOR RECORDING A SIGNAL THEREON 有权
    信息记录介质，以及记录信号的方法和装置

    公开(公告)号：US20120057442A1

    公开(公告)日：2012-03-08

    申请号：US13294611

    申请日：2011-11-11

    申请人： Yasuhiro Ueki

    发明人： Yasuhiro Ueki

    IPC分类号： G11B7/126 ,  G11B7/085 ,  G11B7/24

    CPC分类号： G11B7/1267 ,  G11B7/00736 ,  G11B2007/0013

    摘要： A disc-shaped information recording medium includes a laminate of recording layers on and from which an information signal can be optically recorded and reproduced from one side of the medium. Data areas are provided in the recording layers, respectively. The information signal can be recorded on and reproduced from the data areas while a laser beam emitted from an optical pickup is applied to the data areas. Optical recording test areas are provided in the recording layers, respectively. A test signal can be recorded on and reproduced from the optical recording test areas to decide optimum power values of the laser beam for signal recording. The test areas are out of overlap as viewed in a direction of propagation of the laser beam.

    摘要翻译： 盘形信息记录介质包括记录层的层叠体，信息信号可以从介质的一侧被光学记录和再现。 分别在记录层中提供数据区。 信息信号可以被记录在数据区上并从数据区再现，而从光拾取器发射的激光束被施加到数据区。 光记录测试区域分别设置在记录层中。 测试信号可以记录在光学记录测试区域上并从光学记录测试区域再现，以确定用于信号记录的激光束的最佳功率值。 在激光束的传播方向观察时，测试区域不重叠。