公开(公告)号：US20100149949A1

公开(公告)日：2010-06-17

申请号：US12712272

申请日：2010-02-25

申请人： Hisashi Senga ,  Tomotada Kamei ,  Kenzo Ishibashi ,  Hideki Hayashi ,  Yohichi Saitoh

发明人： Hisashi Senga ,  Tomotada Kamei ,  Kenzo Ishibashi ,  Hideki Hayashi ,  Yohichi Saitoh

IPC分类号： G11B7/135

CPC分类号： G11B7/1275 ,  G11B7/123 ,  G11B2007/0006

摘要： An optical pickup according to the present invention includes an integrated circuit element (LDD) 5 for driving first, second, and third semiconductor lasers 3, 4, and 5. The LDD 50 is shaped so as to have a rectangular principal face surrounded by one side, with a plurality of input/output pins being arranged along each side. The plurality of input/output pins include a first pin group connected to a blue-violet laser 5 whose oscillation wavelength is the shortest, a second pin group connected to a red laser 4, and a third pin group connected to an infrared laser 3. The wiring structure of the optical pickup includes a first transmission line 41 for connecting the first pin group to the blue-violet laser 5, a second transmission line 33 for connecting the second pin group to the red laser 4, and a third transmission line 31 for connecting the third pin group to the infrared laser 3, where the first transmission line 41 is shorter than both the second and third transmission lines 31 and 33. Of the rectangular principal face of the LDD 50, the side along which the first pin group is provided is orthogonal to the side along which the second pin group is provided or to the side along which the third pin group is provided.

摘要翻译： 根据本发明的光拾取器包括用于驱动第一，第二和第三半导体激光器3,4和5的集成电路元件（LDD）5。LDD 50被成形为具有被一个包围的矩形主面 其中沿着每一侧布置有多个输入/输出引脚。 多个输入/输出引脚包括连接到振荡波长最短的蓝紫色激光器5的第一引脚组，连接到红色激光器4的第二引脚组和连接到红外激光器3的第三引脚组。 光拾取器的布线结构包括用于将第一引线组连接到蓝紫激光器5的第一传输线41，用于将第二引脚组连接到红色激光器4的第二传输线33和第三传输线31 用于将第三引脚组连接到红外激光器3，其中第一传输线41比第二传输线31和第三传输线33短。在LDD 50的矩形主面中，第一引脚组 被设置为与设置有第二引脚组的一侧或与设置第三引脚组的一侧正交。

公开(公告)号：US07558170B2

公开(公告)日：2009-07-07

申请号：US11981366

申请日：2007-10-31

申请人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

发明人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

摘要翻译： 本发明的光信息装置包括：光拾取头，包括：光源; 衍射单位; 冷凝单元; 分束器; 光检测器; 和跟踪误差信号发生器。 光记录介质具有基本上以恒定间距布置的轨道。 平均音高是tp。 当主光束被放置在轨道上时，第一子光束和第二子光束被放置在轨道之间。 跟踪误差信号发生器对从接收主波束的光接收部分输出的信号执行差分运算，产生第一推挽信号，对从光接收部分输出的信号执行差分运算 接收第一子光束和第二子光束以产生第二推挽信号，并且相对于第一推挽信号和第二推挽信号执行差分算术运算以产生跟踪误差信号， 当在与光记录介质的轨道正交的方向上扫描光束时，以间距tp获得的第一推挽信号的幅度波动的情况。

公开(公告)号：US20090168823A1

公开(公告)日：2009-07-02

申请号：US12300161

申请日：2007-05-01

申请人： Tomotada Kamei

发明人： Tomotada Kamei

IPC分类号： H01S3/00

CPC分类号： G11B7/127 ,  H01S5/02212 ,  H01S5/0222 ,  H01S5/4087 ,  H05K3/308 ,  H05K2201/10121 ,  H05K2201/10863

摘要： A semiconductor laser device according to the present invention includes: at least one laser chip that emits a laser beam; a plurality of lead pins that are electrically connected to the laser chip and that supply current to get the laser beam emitted; and a stem that holds the laser chip and the lead pins thereon. The lead pins have mutually different lengths and the longest one of the lead pins is electrically connected to the stem.

摘要翻译： 根据本发明的半导体激光器件包括：发射激光束的至少一个激光芯片; 电连接到激光芯片并提供电流以获得发射的激光束的多个引脚; 以及将激光芯片和引线插脚固定在其上的杆。 引脚具有相互不同的长度，并且最长的一个引脚与电极连接。

公开(公告)号：US07542382B2

公开(公告)日：2009-06-02

申请号：US11981236

申请日：2007-10-31

申请人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

发明人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

公开(公告)号：US07463561B2

公开(公告)日：2008-12-09

申请号：US11789078

申请日：2007-04-23

申请人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

发明人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

公开(公告)号：US07227819B2

公开(公告)日：2007-06-05

申请号：US10646602

申请日：2003-08-22

申请人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

发明人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

摘要翻译： 本发明的光信息装置包括：光拾取头，包括：光源; 衍射单位; 冷凝单元; 分束器; 光检测器; 和跟踪误差信号发生器。 光记录介质具有基本上以恒定间距布置的轨道。 平均音高是tp。 当主光束被放置在轨道上时，第一子光束和第二子光束被放置在轨道之间。 跟踪误差信号发生器对从接收主波束的光接收部分输出的信号执行差分运算，产生第一推挽信号，对从光接收部分输出的信号执行差分运算 接收第一子光束和第二子光束以产生第二推挽信号，并且相对于第一推挽信号和第二推挽信号执行差分算术运算以产生跟踪误差信号， 当在与光记录介质的轨道正交的方向上扫描光束时，以间距tp获得的第一推挽信号的幅度波动的情况。

公开(公告)号：US07539090B2

公开(公告)日：2009-05-26

申请号：US11981464

申请日：2007-10-31

申请人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

发明人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

公开(公告)号：US20080089195A1

公开(公告)日：2008-04-17

申请号：US11981464

申请日：2007-10-31

申请人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

发明人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

公开(公告)号：US20080068944A1

公开(公告)日：2008-03-20

申请号：US11981487

申请日：2007-10-31

申请人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

发明人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

公开(公告)号：US20070195663A1

公开(公告)日：2007-08-23

申请号：US11789078

申请日：2007-04-23

申请人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

发明人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tap. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

摘要翻译： 本发明的光信息装置包括：光拾取头，包括：光源; 衍射单位; 冷凝单元; 分束器; 光检测器; 和跟踪误差信号发生器。 光记录介质具有基本上以恒定间距布置的轨道。 平均球场是水龙头。 当主光束被放置在轨道上时，第一子光束和第二子光束被放置在轨道之间。 跟踪误差信号发生器对从接收主波束的光接收部分输出的信号执行差分运算，产生第一推挽信号，对从光接收部分输出的信号执行差分运算 接收第一子光束和第二子光束以产生第二推挽信号，并且相对于第一推挽信号和第二推挽信号执行差分算术运算以产生跟踪误差信号， 当在与光记录介质的轨道正交的方向上扫描光束时，以间距tp获得的第一推挽信号的幅度波动的情况。