公开(公告)号：US5088082A

公开(公告)日：1992-02-11

申请号：US563701

申请日：1990-08-07

申请人： Yuichi Yamada ,  Kazuo Ikeda ,  Kouichi Ihara

发明人： Yuichi Yamada ,  Kazuo Ikeda ,  Kouichi Ihara

IPC分类号： G11B7/12 ,  G11B7/125 ,  G11B23/50

CPC分类号： G11B7/126 ,  G11B23/505 ,  G11B7/121

摘要： In a dust removing system, the level of influence of dust sticking to an objective lens of an optical head is detected from either an amount of light emitted from the optical head and reflected from an optical head or from an access time. Three stages of levels with regard to the degree of influence of the dust are set in accordance with such detection value, and a different message for the removal of dust is indicated on a display unit in response to the level of the influence. When the influence is low, a dust removing mechanism is automatically rendered operative to remove the dust. At the first level at which the influence of dust is low, the optical disk in the optical disk device is discharged and cleaning of the objective lens is performed, and an indication is provided on the display unit representing that cleaning is proceeding. When the second stage is detected, the optical disk in the optical disk device is discharged, and a message is indicated on the display unit representing that cleaning of the objective lens should be performed using a cleaning disk. When the third stage is detected, a message is indicated on the display unit representing that cleaning of the objective lens should be performed by manual operation.

摘要翻译： 在除尘系统中，从光学头发射的光的量和从光学头反射的光或从存取时间检测到粘附到光学头的物镜上的灰尘的影响程度。 根据这样的检测值设定与灰尘的影响程度有关的三个阶段的水平，并且响应于影响的程度在显示单元上指示除去灰尘的不同信息。 当影响较小时，自动进行除尘机构除去灰尘。 在灰尘的影响低的第一级别，光盘装置中的光盘被排出并执行物镜的清洁，并且在显示单元上提供表示正在进行清洁的指示。 当检测到第二级时，光盘装置中的光盘被放电，并且在显示单元上显示消息，表示应该使用清洁盘执行物镜的清洁。 当检测到第三级时，在显示单元上显示消息，表示应该通过手动操作执行物镜的清洁。

公开(公告)号：US20110126221A1

公开(公告)日：2011-05-26

申请号：US12947319

申请日：2010-11-16

申请人： Akira Kitayama ,  Kouichi Ihara ,  Kenji Takahashi ,  Tatemi Ido

发明人： Akira Kitayama ,  Kouichi Ihara ,  Kenji Takahashi ,  Tatemi Ido

IPC分类号： G11B33/02 ,  H05K1/00

CPC分类号： G11B17/056 ,  G11B33/122 ,  H05K1/0219 ,  H05K1/0245 ,  H05K1/025 ,  H05K1/028 ,  H05K2201/09727

摘要： A electronic device including a mechanism for changing the relative positions of two circuit boards such as in an optical disc drive, in which a flexible printed circuit electrically connecting between the two circuit board changes shape to suppress fluctuations in the transmission characteristics occurring due to contact with metal such as a case, and provides stable signal transmission. A flexible printed circuit is comprised of at least one or more differential lines, a fixed unit affixed to a case at least at one location, a movable unit that changes shape according to the relative positions of two case. The lines adjacent to the differential line are a grounded surface, and the flexible printed circuit is formed to narrow the distance between the movable unit lines more than the distance between the fixed unit lines.

摘要翻译： 一种电子设备，包括用于改变诸如光盘驱动器中的两个电路板的相对位置的机构，其中电连接在两个电路板之间的柔性印刷电路形状改变，以抑制由于接触而发生的传输特性的波动 金属如外壳，并提供稳定的信号传输。 柔性印刷电路包括至少一个或多个差分线，固定单元至少在一个位置固定到壳体，可移动单元根据两个壳体的相对位置而改变形状。 与差分线相邻的线是接地表面，并且柔性印刷电路被形成为使可移动单元线之间的距离比固定单元线之间的距离更窄。

公开(公告)号：US08448196B2

公开(公告)日：2013-05-21

申请号：US12947319

申请日：2010-11-16

申请人： Akira Kitayama ,  Kouichi Ihara ,  Kenji Takahashi ,  Tatemi Ido

发明人： Akira Kitayama ,  Kouichi Ihara ,  Kenji Takahashi ,  Tatemi Ido

IPC分类号： G11B33/12

CPC分类号： G11B17/056 ,  G11B33/122 ,  H05K1/0219 ,  H05K1/0245 ,  H05K1/025 ,  H05K1/028 ,  H05K2201/09727

摘要： An electronic device including a mechanism for changing the relative positions of two circuit boards such as in an optical disc drive is provided. A flexible printed circuit electrically connected between the two circuit boards changes shape to suppress fluctuations in the transmission characteristics occurring due to contact with metal such as a case, and provides stable signal transmission. The flexible printed circuit includes at least one or more differential lines, a fixed unit affixed to a case at least at one location, and a movable unit that changes shape according to the relative positions of two cases. The lines adjacent to the differential line are a grounded surface, and the flexible printed circuit is formed to narrow the distance between the movable unit lines more than the distance between the fixed unit lines.

摘要翻译： 提供一种包括用于改变诸如光盘驱动器中的两个电路板的相对位置的机构的电子设备。 电连接在两个电路板之间的柔性印刷电路改变形状以抑制由于与壳体等金属的接触而发生的传输特性的波动，并提供稳定的信号传输。 柔性印刷电路包括至少一个或多个差分线，至少在一个位置附接到壳体的固定单元，以及根据两个壳体的相对位置改变形状的可移动单元。 与差分线相邻的线是接地表面，并且柔性印刷电路被形成为使可移动单元线之间的距离比固定单元线之间的距离更窄。

公开(公告)号：US20090103406A1

公开(公告)日：2009-04-23

申请号：US12285821

申请日：2008-10-15

申请人： Akira Kitayama ,  Tatemi Ido ,  Nobuaki Sato ,  Hiroharu Sakai ,  Kouichi Ihara

发明人： Akira Kitayama ,  Tatemi Ido ,  Nobuaki Sato ,  Hiroharu Sakai ,  Kouichi Ihara

IPC分类号： G11B7/00

CPC分类号： G11B7/00456

摘要： There is provided an optical disc drive comprises an optical pick-up including a laser diode (LD) and a laser diode driver (LDD) for driving the laser diode, a digital signal processor (DSP) including a write strategy circuit and low voltage differential signaling (LVDS) drivers for transmitting a produced write strategy signal, a circuit board having the DSP mounted thereon and including a line for transmitting the write strategy signal, a transmission line connecting the circuit board and the LDD and transmitting a write strategy signal, and differential resistors connected between differential lines of outputs of the LVDS drivers. Especially, a resistor having a resistance value in a range of 80 to 500Ω is inserted between the differential lines of outputs of the LVDS driver inside the DSP.

摘要翻译： 提供了一种光盘驱动器，其包括：光拾取器，包括用于驱动激光二极管的激光二极管（LD）和激光二极管驱动器（LDD）;数字信号处理器（DSP），包括写策略电路和低电压差 用于发送产生的写入策略信号的信令（LVDS）驱动器，安装有DSP的电路板，并且包括用于发送写入策略信号的线路，连接电路板和LDD的传输线，并发送写入策略信号，以及 差分电阻连接在LVDS驱动器的输出差分线路之间。 特别地，在DSP内部的LVDS驱动器的输出的差分线之间插入电阻值为80〜500Ω的电阻。

公开(公告)号：US08665681B2

公开(公告)日：2014-03-04

申请号：US12285821

申请日：2008-10-15

申请人： Akira Kitayama ,  Tatemi Ido ,  Nobuaki Sato ,  Hiroharu Sakai ,  Kouichi Ihara

发明人： Akira Kitayama ,  Tatemi Ido ,  Nobuaki Sato ,  Hiroharu Sakai ,  Kouichi Ihara

IPC分类号： G11B7/00

CPC分类号： G11B7/00456

摘要： There is provided an optical disc drive comprises an optical pick-up including a laser diode (LD) and a laser diode driver (LDD) for driving the laser diode, a digital signal processor (DSP) including a write strategy circuit and low voltage differential signaling (LVDS) drivers for transmitting a produced write strategy signal, a circuit board having the DSP mounted thereon and including a line for transmitting the write strategy signal, a transmission line connecting the circuit board and the LDD and transmitting a write strategy signal, and differential resistors connected between differential lines of outputs of the LVDS drivers. Especially, a resistor having a resistance value in a range of 80 to 500Ω is inserted between the differential lines of outputs of the LVDS driver inside the DSP.

摘要翻译： 提供了一种光盘驱动器，其包括：光拾取器，包括用于驱动激光二极管的激光二极管（LD）和激光二极管驱动器（LDD）;数字信号处理器（DSP），包括写策略电路和低电压差 用于发送产生的写入策略信号的信令（LVDS）驱动器，安装有DSP的电路板，并且包括用于发送写入策略信号的线路，连接电路板和LDD的传输线，并发送写入策略信号，以及 差分电阻连接在LVDS驱动器的输出差分线路之间。 特别地，在DSP内部的LVDS驱动器的输出的差分线之间插入电阻值为80〜500Ω的电阻。