Laser driver and optical transceiver
    22.
    发明授权
    Laser driver and optical transceiver 有权
    激光驱动器和光收发器

    公开(公告)号:US06496525B1

    公开(公告)日:2002-12-17

    申请号:US09400190

    申请日:1999-09-21

    申请人: Hiroshi Kimura

    发明人: Hiroshi Kimura

    IPC分类号: H01S313

    CPC分类号: H01S5/0683 H01S5/042

    摘要: A laser driver according to the present invention is adapted to keep the optical output power of a laser diode constant even if the temperature has changed or if the performance of the laser diode has deteriorated with time. The laser driver includes a photodiode, a current-to-voltage converter, a reference voltage generator, a transconductor, a holding capacitor and a drive current output circuit. The current-to-voltage converter converts an output current of the photodiode, which is provided to monitor the optical output of the laser diode, into a monitor voltage. The transconductor supplies an output current corresponding to a difference between the monitor voltage and a predetermined reference voltage. The drive current output circuit outputs a laser drive current corresponding to the voltage held by the holding capacitor, which is connected to the output terminal of the transconductor. The laser driver with this configuration performs a feedback control in such a manner as to equalize the monitor voltage with the reference voltage, thereby keeping the optical output power of the laser diode constant. As a result, high-precision and stabilized APC performance is realized.

    摘要翻译: 根据本发明的激光驱动器适于保持激光二极管的光输出功率恒定,即使温度已经改变,或者激光二极管的性能随时间而变差。 激光驱动器包括光电二极管,电流 - 电压转换器,参考电压发生器,跨导体,保持电容器和驱动电流输出电路。 电流 - 电压转换器将用于监视激光二极管的光输出的光电二极管的输出电流转换为监视电压。 跨导器提供对应于监视电压和预定参考电压之间的差的输出电流。 驱动电流输出电路输出与由保持电容器保持的电压对应的激光驱动电流,该保持电容器连接到跨导体的输出端子。 具有这种配置的激光驱动器以这样的方式执行反馈控制,以使监视电压与参考电压相等,从而保持激光二极管的光输出功率恒定。 因此,实现了高精度和稳定的APC性能。

    Method of manufacturing semiconductor device
    24.
    发明授权
    Method of manufacturing semiconductor device 失效
    制造半导体器件的方法

    公开(公告)号:US06214664B1

    公开(公告)日:2001-04-10

    申请号:US09443016

    申请日:1999-11-18

    IPC分类号: H01L218242

    CPC分类号: H01L27/10852

    摘要: In a semiconductor device and a method of manufacturing the same, an isolating and insulating film is provided at an end neighboring to a second impurity region with a groove extended to a semiconductor substrate. This removes a crystal defect existed at the end of the isolating and insulating film, and thus prevents leak of a current at this portion from a storage node. Consequently, provision of the groove at the edge portion of the isolating oxide film neighboring to the impurity region removes a crystal defect at this region, and thus eliminates a possibility of leak of a current.

    摘要翻译: 在半导体器件及其制造方法中,隔离绝缘膜设置在与第二杂质区相邻的端部处,并且沟槽延伸到半导体衬底。 这消除了隔离和绝缘膜末端存在的晶体缺陷,从而防止在该部分处的电流从存储节点泄漏。 因此,在与杂质区相邻的隔离氧化膜的边缘部分处设置沟槽消除了该区域的晶体缺陷,从而消除了电流泄漏的可能性。

    Deflection yoke
    25.
    发明授权
    Deflection yoke 失效
    偏转轭

    公开(公告)号:US6124773A

    公开(公告)日:2000-09-26

    申请号:US009885

    申请日:1998-01-21

    摘要: A deflection yoke includes a coil, a base board, and a terminal. The terminal is mounted on the base board. The terminal extends from the base board. The terminal has a first portion and a second portion. The first portion of the terminal extends from the base board and has a substantially circular cross-section. The second portion of the terminal extends from the first portion thereof and has a cross-section with a corner. A lead extending from the coil is wound on the first and second portions of the terminal as a winding on the terminal. The winding has a first portion and a second portion. The first portion of the winding extends around the first portion of the terminal. The second portion of the winding extends around the second portion of the terminal. At least part of of the second portion of the winding is soldered to the second portion of the terminal while at least part of the first portion of the winding is non-soldered.

    摘要翻译: 偏转线圈包括线圈,基板和端子。 端子安装在基板上。 终端从基板延伸。 端子具有第一部分和第二部分。 端子的第一部分从基板延伸并且具有大致圆形的横截面。 端子的第二部分从其第一部分延伸并且具有与拐角的横截面。 从线圈延伸的引线作为端子上的绕组缠绕在端子的第一和第二部分上。 绕组具有第一部分和第二部分。 绕组的第一部分围绕端子的第一部分延伸。 绕组的第二部分围绕端子的第二部分延伸。 绕组的第二部分的至少一部分被焊接到端子的第二部分,而绕组的第一部分的至少一部分未被焊接。

    Control device
    26.
    发明授权
    Control device 失效
    控制装置

    公开(公告)号:US6073653A

    公开(公告)日:2000-06-13

    申请号:US208986

    申请日:1998-12-11

    IPC分类号: G05D7/00 G05D7/06 F17D3/18

    摘要: A flow control device can variably control the flow rate with extremely high accuracy over a wide flow rate range from a high to a low flow rate with a single pump. In this flow control device, a pump is provided in a main pipe line through which fluid is fed. A bypass branches from the main pipe line at a point nearer to the discharge port than is the pump. A flowmeter and a flow control valve are provided in the bypass. In the bypass is further provided a back pressure regulating valve near the discharge port. The degree of opening of the flow control valve is adjusted based on the flow rate detected by the flowmeter. The back pressure regulating valve suppresses pressure fluctuation on the discharge side of the flow control valve.

    摘要翻译: 流量控制装置可以在具有单个泵的高流量到低流量的宽流量范围内以极高的精度可变地控制流量。 在该流量控制装置中,在供给流体的主管路上设置有泵。 旁路在比主泵更靠近排放口的点处从主管道分支。 旁路中设有流量计和流量控制阀。 在旁路中还设置有靠近排出口的背压调节阀。 基于由流量计检测的流量来调节流量控制阀的开度。 背压调节阀抑制流量控制阀的排出侧的压力波动。

    Semiconductor device having misalignment resistive interconnect layers
    28.
    发明授权
    Semiconductor device having misalignment resistive interconnect layers 失效
    具有不对准电阻互连层的半导体器件

    公开(公告)号:US5920124A

    公开(公告)日:1999-07-06

    申请号:US862255

    申请日:1997-05-23

    申请人: Hiroshi Kimura

    发明人: Hiroshi Kimura

    摘要: A semiconductor device having a structure of at least two interconnect levels is disclosed wherein word lines as a lower interconnect layer are not removed if a misalignment exists when contact holes are formed. The word lines (2) serving as gate electrodes are arranged on a surface of a p-type Si substrate (14) serving as a base. An etching stopper underlay insulative film (10) is formed over the word lines (2), and an etching stopper film (9) is formed to cover the etching stopper underlay insulative film (10). An interlayer insulative film (8) and bit lines (1) are deposited on the etching stopper film (9), and a hole is formed. A sidewall insulative film (16) is formed on a side surface of the hole. The etching stopper film (9) functions to prevent part of the word lines (2) which is located in the hole from being removed.

    摘要翻译: 公开了一种具有至少两个互连级别的结构的半导体器件,其中如果在形成接触孔时存在不对准,则作为下互连层的字线不被去除。 用作栅极的字线(2)布置在用作基底的p型Si衬底(14)的表面上。 在字线(2)上形成有蚀刻止动器底层绝缘膜(10),并且形成蚀刻阻挡膜(9)以覆盖蚀刻停止层叠绝缘膜(10)。 在蚀刻阻挡膜(9)上淀积层间绝缘膜(8)和位线(1),形成孔。 在孔的侧面形成有侧壁绝缘膜(16)。 蚀刻停止膜(9)用于防止位于孔中的字线(2)的一部分被去除。

    Apparatus for reading and writing read/write disks
    29.
    发明授权
    Apparatus for reading and writing read/write disks 失效
    读写磁盘的设备

    公开(公告)号:US5761185A

    公开(公告)日:1998-06-02

    申请号:US805784

    申请日:1997-02-25

    CPC分类号: G11B17/0282 G11B17/021

    摘要: A read/write apparatus which enables setting and removal of a read/write compact disk within a limited space of the apparatus includes a turntable 83 having a cap portion 123 that permits a center hole h of a read/write compact disk to be fitted therearound. Clips 124 are capable of advancing and retreating from a rim of cap portion 123 of turntable 83. A setting/removing lever 136 is provided in such a manner that setting/removing lever 136 is capable of rotating by a specified angle with respect to turntable 83. A head 85 which is capable of moving parallel to the radius of the read/write compact disk to perform reading or writing of the read/write compact disk is provided. Head 85 has a stopper 145 which catches a catching portion 139 of setting/removing lever 136 at a position head 85 approaches closest to turntable 83. Cap portion 123 is provided with a setting/removing device 125. During forward rotation of turntable 83, setting/removing device 125 catches stopper 145, thereby causing clips 124 to advance. During reverse rotation of turn table 83, setting/removing device 125 catches stopper 145 and which enables clips 124 to retreat.

    摘要翻译: 一种读/写装置,其能够在设备的有限空间内设置和移除读/写光盘,包括转台83,转盘83具有允许读/写光盘的中心孔h安装在其周围的盖部分123 。 夹124能够从转台83的盖部分123的边缘前进和后退。设置/拆卸杆136设置成使得设置/移除杆136能够相对于转台83旋转特定角度 提供能够平行于读/写光盘的半径移动以执行读/写光盘的读取或写入的头部85。 头部85具有止动件145,其在靠近转盘83的位置头部85处接近设置/移除杆136的捕获部分139。盖部分123设置有设置/移除装置125.在转盘83的正向旋转期间,设定 移除装置125卡止止挡件145,从而使夹子124前进。 在转台83的反向旋转期间,设置/移除装置125卡住止动件145,并且使得夹子124能够退回。