会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 97. 发明授权
    • Optical pickup for optical disk apparatus
    • 光盘装置用光拾取器
    • US6125087A
    • 2000-09-26
    • US965448
    • 1997-11-06
    • Kunikazu OhnishiMasayuki InoueTohru SasakiYukio FukuiTakeshi NakaoTakeshi Shimano
    • Kunikazu OhnishiMasayuki InoueTohru SasakiYukio FukuiTakeshi NakaoTakeshi Shimano
    • G11B7/00G11B7/09G11B7/12G11B7/13G11B7/135
    • G11B7/131G11B7/0901G11B7/123G11B7/1353G11B2007/0006G11B7/0908G11B7/0916G11B7/0943
    • Disclosed is an optical pickup and an optical disc device using the same, each including a laser diode, a photo-detector having a region divided into at least six photo-detection areas, and a diffraction grating disposed between the laser diode and the photo-detector and having a region divided into four areas by cross-shaped division lines. The diffraction grating divides a light beam reflected from an optical disc into four diffracted light beams. A focus error signal in accordance with a knife edge method and two kinds of tracking error signals in accordance with a push-pull method and a differential phase detection method are detected by irradiating the light beams diffracted at the areas of the diffraction grating on the detection areas of the photo-detector and/or at boundary lines therebetween, and arithmetically operating light intensity signals obtained from the detection areas of the photo-detector. As a result, there can be realized an optical pickup and an optical disc device, each of which can be matched with various optical discs different in structure by detecting a tracking error signal in accordance with the push-pull method and a tracking error signal suitable for a read only disc using only one photo-detector. Further, in the present invention, a holographic element can be used as the diffraction grating.
    • 公开了一种光拾取器和使用该光拾取器的光盘装置,每个光拾取器和光盘装置均包括激光二极管,具有被划分为至少六个光检测区域的区域的光检测器,以及设置在激光二极管和光电二极管之间的衍射光栅, 并且具有通过十字形划分线划分成四个区域的区域。 衍射光栅将从光盘反射的光束分成四个衍射光束。 通过将衍射光栅衍射的光束照射在检测器上来检测根据刀刃法的聚焦误差信号和根据推挽法和差分相位检测方法的两种跟踪误差信号 光检测器的区域和/或其间的边界线,以及从光检测器的检测区域获得的算术运算光强度信号。 结果,可以实现光拾取器和光盘装置,其中的每一个可以通过根据推挽方法检测跟踪误差信号和适合的跟踪误差信号而与结构不同的各种光盘匹配 对于仅使用一个光电检测器的只读光盘。 此外,在本发明中,可以使用全息元件作为衍射光栅。
    • 98. 发明授权
    • Disk cartridge and disk device using the same
    • 磁盘盒和磁盘设备使用相同
    • US6075763A
    • 2000-06-13
    • US400846
    • 1999-09-21
    • Kiyoshi KanoYasuo OhtsukaMikio ShiraishiToshifumi TakeuchiMasafumi NakamuraMasayuki InoueYoshio SuzukiMichio Miura
    • Kiyoshi KanoYasuo OhtsukaMikio ShiraishiToshifumi TakeuchiMasafumi NakamuraMasayuki InoueYoshio SuzukiMichio Miura
    • G11B17/04G11B23/03G11B33/02G11B3/70
    • G11B17/0436G11B17/047G11B23/0308G11B23/0311G11B23/0317
    • A disk cartridge system including different types of disk cartridges for use in a cartridge drive apparatus, including first and second disk cartridges. The first disk cartridge including a first case having a substantially rectangular shape with first, second, third and fourth edges, the first edge of the case being delimited by a first corner portion connecting the first edge and second edge and a second corner portion connecting the first edge and the third edge. The first case has a first groove at a side plane of both of the second and third edges. The first case also has a first cutout portion at both of the second and the third edges and extending in a direction of and passing through the thickness of the first case. The second disk cartridge includes a second case with a substantially rectangular shape with fifth, sixth, seventh and eighth edges, the fifth edge of the second case being delimited by a fifth corner portion connecting the fifth edge and sixth edge and a sixth corner portion connecting the fifth edge and the seventh edge. The second case has a second groove at a side plane of only one of the sixth and seventh edge. The second case also has a second cutout portion at both of the sixth and the seventh edges extending in a direction of the thickness of the second case without passing through the thickness of the second case. A length, width and thickness of the first case are substantially equal to a length, width and thickness of the second case.
    • 一种盘盒系统,包括用于盒驱动装置的不同类型的盘盒,包括第一和第二盘盒。 第一盒式磁盘包括具有第一,第二,第三和第四边缘的大致矩形形状的第一壳体,壳体的第一边缘由连接第一边缘和第二边缘的第一角部限定,第二角部连接 第一边缘和第三边缘。 第一壳体在第二和第三边缘的两侧的侧面具有第一凹槽。 第一壳体还具有在第二和第三边缘处的第一切口部分,并且在第一壳体的厚度方向上延伸并穿过第一壳体的厚度。 第二盒式磁盘包括具有第五,第六,第七和第八边缘的大致矩形形状的第二壳体,第二壳体的第五边缘由连接第五边缘和第六边缘的第五角部分界定,第六角部分连接 第五边和第七边。 第二壳体在第六边缘和第七边缘中只有一个的侧面具有第二凹槽。 第二壳体还具有在第二壳体的厚度方向上延伸的第六和第七边缘的第二切口部分,而不穿过第二壳体的厚度。 第一壳体的长度,宽度和厚度基本上等于第二壳体的长度,宽度和厚度。