公开(公告)号：US4916741A

公开(公告)日：1990-04-10

申请号：US170908

申请日：1988-03-21

申请人： Tsutomu Ishikawa

发明人： Tsutomu Ishikawa

IPC分类号： H04B1/16 ,  H04H1/00 ,  H04H20/48

CPC分类号： H04H20/48 ,  H04B1/1692

摘要： An FMX stereophonic receiver for receiving an FMX stereophonic broadcast signal, which includes a stereo sum signal, a stereo difference signal and a compressed stereo difference signal, is disclosed. When multipath interference takes place, noise signal will be produced, which adversely affects on a level control of an added signal of the stereo difference signal and the compressed stereo difference signal. The disclosed receiver includes a detector for detecting the multipath noise signal contained in the FMX stereophonic broadcast signal. When the multipath noise signal is detected, FMX receiving mode is automatically changed to FM receiving mode by a selecting means, so as to reduce the affect of the noise signal.

公开(公告)号：US08563991B2

公开(公告)日：2013-10-22

申请号：US13338356

申请日：2011-12-28

申请人： Tsutomu Ishikawa

发明人： Tsutomu Ishikawa

IPC分类号： H01L27/15

CPC分类号： H01S5/0612 ,  H01S5/02453 ,  H01S5/0261 ,  H01S5/0265 ,  H01S5/06256 ,  H01S5/06258 ,  H01S5/1209 ,  H01S5/2214 ,  H01S5/227 ,  H01S5/3211 ,  H01S2301/173

摘要： An optical semiconductor device has a semiconductor substrate, an optical semiconductor region and a heater. The optical semiconductor region is provided on the semiconductor substrate and has a width smaller than that of the semiconductor substrate. The heater is provided on the optical semiconductor region. The optical semiconductor region has a cladding region, an optical waveguide layer and a low thermal conductivity layer. The optical waveguide layer is provided in the cladding region and has a refractive index higher than that of the cladding region. The low thermal conductivity layer is provided between the optical waveguide layer and the semiconductor substrate and has a thermal conductivity lower than that of the cladding region.

摘要翻译： 光学半导体器件具有半导体衬底，光学半导体区域和加热器。 光半导体区域设置在半导体衬底上，其宽度小于半导体衬底的宽度。 加热器设置在光学半导体区域上。 光学半导体区域具有包层区域，光波导层和低热导率层。 光波导层设置在包层区域中，折射率高于包层区域的折射率。 低导热率层设置在光波导层与半导体基板之间，其热导率低于包层区域。

公开(公告)号：US20130272903A1

公开(公告)日：2013-10-17

申请号：US13997543

申请日：2011-11-17

申请人： Tsutomu Ishikawa ,  Yujiro Morita ,  Yukihiko Taguchi

发明人： Tsutomu Ishikawa ,  Yujiro Morita ,  Yukihiko Taguchi

IPC分类号： F04B53/18

CPC分类号： F04B53/18 ,  F04B27/0821 ,  F04B27/0834 ,  F04B39/02 ,  F04B39/0238 ,  F04B39/06 ,  F04B39/122

摘要： In a cylinder head 104 provided on a head side of a cylinder block 101 with a valve plate 103 interposed therebetween, a suction chamber 119 is formed on the center side and a discharge chamber 120 is formed so as to encircle the suction chamber 119. In the cylinder head 104, an oil storage chamber 132 for storing an oil separated from a discharged refrigerant by an oil separating portion (a separation pipe 130 etc.) is provided. The oil storage chamber 132 extends in the diametric direction of the cylinder head 104 integrally with the cylinder head 104 and has an open end at the outer face of the cylinder head 104, and the open end is occluded by an occluding member 134. Here, the oil storage chamber 132 has a portion bulging into the suction chamber 119.

摘要翻译： 在设置在气缸体101的头侧的气缸盖104中插入有阀板103的情况下，在中心侧形成有吸入室119，并且形成排出室120以包围吸入室119。 气缸盖104，用于储存通过油分离部（分离管130等）从排出的制冷剂分离的油的储油室132。 储油室132在气缸盖104的直径方向上与气缸盖104一体地延伸，并且在气缸盖104的外表面具有开口端，并且开口端被闭塞构件134堵塞。这里， 储油室132具有向吸入室119膨胀的部分。

公开(公告)号：US20130101443A1

公开(公告)日：2013-04-25

申请号：US13805800

申请日：2011-05-27

申请人： Tsutomu Ishikawa

发明人： Tsutomu Ishikawa

IPC分类号： F04B53/18

CPC分类号： F04B53/18 ,  F04B27/1036 ,  F04B27/109 ,  F04B39/02 ,  F04B39/0207 ,  F04B39/0284 ,  F04B39/04

摘要： Lubricating performance and durability of a variable capacity compressor are secured. A first communication hole 202 is formed to be close to a penetration bolt 201a at an upstream side in a rotational direction, the penetration bolt 201a is disposed outside a rotation trajectory of a rotating member such as a swash plate in a front housing 101, and a second communication hole is formed to be close to an upper penetration bolt 201b at a downstream side in a rotational direction. The first and second communication holes are formed by penetrating a peripheral wall of the front housing 101, a storage chamber 206 storing oil in refrigerant is arranged outside the front housing 101 by communicating with an inner space of the front housing 101 through the communication holes, and while refrigerant in the storage chamber 206 is returned to the inner space from the second communication hole 203, oil in refrigerant received by contacting an upstream side of a first penetration bolt 201a is stored in the storage chamber 206 from the first communication hole 202, and as a result, as a rotational speed is increased, a storage amount is increased.

摘要翻译： 确保可变容量压缩机的润滑性能和耐久性。 第一连通孔202形成为靠近旋转方向的上游侧的贯通螺栓201a，贯通螺栓201a配置在前壳体101内的旋转构件如旋转斜盘的旋转轨迹的外侧， 第二连通孔形成为在旋转方向的下游侧靠近上贯穿螺栓201b。 第一连通孔和第二连通孔通过穿过前壳体101的周壁而形成，通过连通孔与前壳体101的内部空间连通，在前壳体101的外侧配置有储存在制冷剂中的油的储存室206， 并且当存储室206中的制冷剂从第二连通孔203返回到内部空间时，通过与第一贯穿螺栓201a的上游侧接触的制冷剂的油从第一连通孔202被储存在储藏室206中， 结果，随着转速的增加，存储量增加。

公开(公告)号：US20110128985A1

公开(公告)日：2011-06-02

申请号：US12734665

申请日：2008-10-17

申请人： Tsuguki Noma ,  Miroru Murayama ,  Satoshi Uchida ,  Tsutomu Ishikawa

发明人： Tsuguki Noma ,  Miroru Murayama ,  Satoshi Uchida ,  Tsutomu Ishikawa

IPC分类号： H01S5/026

CPC分类号： H01S5/223 ,  H01S5/221 ,  H01S5/2219 ,  H01S5/2227 ,  H01S5/2231 ,  H01S5/34326

摘要： Provided is a semiconductor laser which has a low operating current and stably oscillates even for high-temperature output. The semiconductor laser is provided with a substrate (10); an n-type clad layer (12) arranged on the substrate (10); an active layer (13) arranged on the n-type clad layer (12); a p-type clad layer (14), which is arranged on the active layer (13) and composed of a compound containing Al and has a stripe-shaped ridge structure to be a current channel; a current block layer (16), which is arranged on the surface of the p-clad layer (14) excluding an upper surface of the ridge structure and composed of a compound containing Al and has an Al composition ratio not more than that of the p-type clad layer (14); and a light absorption layer (17), which is arranged on the current block layer (16) and absorbs light at the laser oscillation wavelength.

摘要翻译： 提供了即使对于高温输出也具有低工作电流并稳定地振荡的半导体激光器。 半导体激光器设置有基板（10）; 布置在所述基板（10）上的n型覆盖层（12）; 布置在所述n型覆层（12）上的有源层（13）; p型覆盖层（14），其配置在有源层（13）上，由含有Al的化合物构成，具有条状的脊状结构成为电流通道; 布置在p包覆层（14）的表面上的电流阻挡层（16），除了脊结构的上表面，并且由含Al的化合物构成，Al组成比不大于 p型覆层（14）; 以及布置在当前阻挡层（16）上并吸收激光振荡波长的光的光吸收层（17）。

公开(公告)号：US07656927B2

公开(公告)日：2010-02-02

申请号：US12314350

申请日：2008-12-09

申请人： Tsutomu Ishikawa ,  Takuya Fujii

发明人： Tsutomu Ishikawa ,  Takuya Fujii

IPC分类号： H01S3/03

CPC分类号： H01S5/06256 ,  H01L2224/48091 ,  H01L2224/49175 ,  H01S5/02276 ,  H01S5/0265 ,  H01S5/028 ,  H01S5/0612 ,  H01S5/06258 ,  H01S5/1209 ,  H01L2924/00014

摘要： An optical semiconductor device includes an optical semiconductor element, a metal pattern and at least one thermal conductive material. The optical semiconductor element has a first optical waveguide region and a second optical waveguide region. The second optical waveguide region is optically coupled to the first optical waveguide region and has a heater for changing a refractive index of the second optical waveguide region. The metal pattern is provided on an area to be thermally coupled to a temperature control device. The thermal conductive material couples the metal pattern with an upper face of the first optical waveguide region of the optical semiconductor element. The thermal conductive material is electrically separated from the first optical waveguide region.

摘要翻译： 光学半导体器件包括光学半导体元件，金属图案和至少一种导热材料。 光半导体元件具有第一光波导区域和第二光波导区域。 第二光波导区域光耦合到第一光波导区域并且具有用于改变第二光波导区域的折射率的加热器。 金属图案设置在要耦合到温度控制装置的区域上。 导热材料将金属图案与光半导体元件的第一光波导区域的上表面相连。 导热材料与第一光波导区域电分离。

公开(公告)号：US20090168817A1

公开(公告)日：2009-07-02

申请号：US12342869

申请日：2008-12-23

申请人： Tsutomu Ishikawa ,  Toyotoshi Machida ,  Hirokazu Tanaka

发明人： Tsutomu Ishikawa ,  Toyotoshi Machida ,  Hirokazu Tanaka

IPC分类号： H01S3/10 ,  G01J1/00

CPC分类号： H01S5/0687 ,  H01S5/0014 ,  H01S5/0612 ,  H01S5/0617 ,  H01S5/06256 ,  H01S5/1209

摘要： A testing method of a wavelength-tunable laser having a resonator including wavelength selection portions having wavelength property different from each other includes a first step of controlling the wavelength-tunable laser so as to oscillate at a given wavelength according to an initial setting value, a second step of tuning the wavelength property of the wavelength selection portions and detecting discontinuity point of gain-condition-changing of the wavelength-tunable laser, and a third step of obtaining a stable operating point of the wavelength selection portion according to a limiting point of an oscillation condition at the given wavelength, the limiting point being a point when the discontinuity point is detected.

摘要翻译： 具有包括波长特性彼此不同的波长选择部分的谐振器的波长可调激光器的测试方法包括：控制波长可调谐激光器以便根据初始设定值以给定波长振荡的第一步骤; 调整波长选择部分的波长特性并检测波长可调谐激光器的增益状态变化的不连续点的第二步骤，以及根据波长选择部分的限制点获得波长选择部分的稳定工作点的第三步骤 在给定波长处的振荡条件，限制点是当检测到不连续点时的点。

公开(公告)号：US07474684B2

公开(公告)日：2009-01-06

申请号：US11730260

申请日：2007-03-30

申请人： Tsutomu Ishikawa ,  Takuya Fujii

发明人： Tsutomu Ishikawa ,  Takuya Fujii

IPC分类号： H01S5/00

CPC分类号： H01S5/06256 ,  H01L2224/48091 ,  H01L2224/49175 ,  H01S5/02276 ,  H01S5/0265 ,  H01S5/028 ,  H01S5/0612 ,  H01S5/06258 ,  H01S5/1209 ,  H01L2924/00014

摘要： An optical semiconductor device includes an optical semiconductor element, a metal pattern and at least one thermal conductive material. The optical semiconductor element has a first optical waveguide region and a second optical waveguide region. The second optical waveguide region is optically coupled to the first optical waveguide region and has a heater for changing a refractive index of the second optical waveguide region. The metal pattern is provided on an area to be thermally coupled to a temperature control device. The thermal conductive material couples the metal pattern with an upper face of the first optical waveguide region of the optical semiconductor element. The thermal conductive material is electrically separated from the first optical waveguide region.

摘要翻译： 光学半导体器件包括光学半导体元件，金属图案和至少一种导热材料。 光半导体元件具有第一光波导区域和第二光波导区域。 第二光波导区域光耦合到第一光波导区域并且具有用于改变第二光波导区域的折射率的加热器。 金属图案设置在要耦合到温度控制装置的区域上。 导热材料将金属图案与光半导体元件的第一光波导区域的上表面相连。 导热材料与第一光波导区域电分离。

公开(公告)号：US06771112B1

公开(公告)日：2004-08-03

申请号：US09552085

申请日：2000-02-24

申请人： Tsutomu Ishikawa ,  Hiroshi Kojima

发明人： Tsutomu Ishikawa ,  Hiroshi Kojima

IPC分类号： H03K17687

CPC分类号： H01L27/098 ,  H01L21/761 ,  H01L27/0635 ,  H01L29/808 ,  H03F1/14

摘要： An integrated semiconductor device is provided that has pads with less input signal attenuation. When J-FET (2) is driven by an input signal, the current passing through it varies. The parasitic capacitance (4) is charged or discharged by the input/output signal of the buffer circuit (6) following the varying current. Thus, since the voltage across the parasitic capacitance (3) varies in phase and at the same level, the parasitic capacitance (3) can be ignored. This effect allows attenuation of an input signal due to the parasitic capacitance (3) to be prevented.

摘要翻译： 提供了具有较少输入信号衰减的焊盘的集成半导体器件。 当J-FET（2）由输入信号驱动时，通过它的电流变化。 寄生电容（4）由跟随变化电流的缓冲电路（6）的输入/输出信号充电或放电。 因此，由于寄生电容（3）两端的电压在相位和相同的电平上变化，寄生电容（3）可以被忽略。 该效果允许由于寄生电容（3）而导致的输入信号的衰减被阻止。

公开(公告)号：US5165099A

公开(公告)日：1992-11-17

申请号：US721864

申请日：1991-06-26

申请人： Masato Onaya ,  Tsutomu Ishikawa ,  Susumu Yamada

发明人： Masato Onaya ,  Tsutomu Ishikawa ,  Susumu Yamada

IPC分类号： H04S7/00

CPC分类号： H04S7/00 ,  H04S7/302

摘要： The balance of the volumes in right and left channels in a stereo play back system is controlled. The amount of attenuation of an attenuator provided in each channel is controlled. When the levels of right and left stereo signals are judged to be approximately the same, an oscillator is permitted to oscillate and the pulses from the oscillator are counted by a counter. In accordance with a voltage signal which corresponds to the level ratio of the right and left stereo signals, whether the counter must count upwards or downwards is determined. The balance is controlled in accordance with the amount of attenuation of each attenuator which is determined in accordance with the decoded count value. The completion of the control is detected when the level ratio of the right and left stereo signals alternately change after they become substantially equal, and the control is automatically finished. When the control is finished, the counter is reset so as to facilitate balance control when the source of the stereo signals is changed.