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公开(公告)号：US5962873A
公开(公告)日：1999-10-05
申请号：US943054
申请日：1997-10-02
申请人： Michio Ohkubo , Tetsuro Ijichi , Yoshikazu Ikegami
发明人： Michio Ohkubo , Tetsuro Ijichi , Yoshikazu Ikegami
CPC分类号： H01S5/164 , H01S5/028 , H01S5/0281 , H01S5/3072
摘要： In a semiconductor laser device comprising a semiconductor laser main body having an active layer formed between a pair of cladding layers, and a non-absorbing layer of InGaP formed on the facets of the semiconductor laser main body and having a band gap greater than the band gap of the active layer,a diffusion blocking layer of, for example, Si, SiN or Ge is formed on the surface of the non-absorbing layer, and a di-electric protective layer of, for example, AlO.sub.x, SiO.sub.x, SiN.sub.x or MgO.sub.x for regulating reflectance at the facets and protecting the non-absorbing layer is formed on the diffusion blocking layer.
摘要翻译： 在包括形成在一对包层之间的有源层的半导体激光器主体和形成在半导体激光器主体的面上并具有大于带的带隙的InGaP的非吸收层的半导体激光器件中， 在非吸收层的表面上形成有源层的间隙，例如Si，SiN或Ge的扩散阻挡层，以及例如AlO x，SiO x，SiN x或 在扩散阻挡层上形成用于调节面的反射率和保护非吸收层的MgOx。
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公开(公告)号：US06618417B2
公开(公告)日：2003-09-09
申请号：US09872334
申请日：2001-06-01
IPC分类号： H01S500
CPC分类号： H01S5/22 , H01S2301/18
摘要： A GaAs based semiconductor laser has a combination of cladding layers including a ridge structure part, and a remaining part which overlays the active layers of the laser, and an etch stop layer sandwiched between the ridge structure part and the remaining part. The remaining part preferably overlies the entire surface of laser active layers and has a thickness “D” which satisfies 1.1×W>D≧0.5×W wherein W is the width of a spot size having a strength of {fraction (1/e2)} as measured at the laser front facet in a direction perpendicular to the active layers, wherein “e” is the base of the natural logarithm. The semiconductor laser solves the kink phenomenon to obtain an excellent linear relationship between the optical output power and the injected current.
摘要翻译： GaAs基半导体激光器具有包括脊结构部分的覆盖层和覆盖激光器的有源层的剩余部分和夹在脊结构部分与其余部分之间的蚀刻停止层的组合。 其余部分优选地覆盖在激光有源层的整个表面上，并且具有满足1.1×W> D> = 0.5×W的厚度“D”，其中W是在激光下测量的强度为1 / e2的光点尺寸的宽度 在垂直于有源层的方向上的前刻面，其中“e”是自然对数的基础。 半导体激光器解决了扭结现象，以获得光输出功率和注入电流之间的良好的线性关系。
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公开(公告)号：US06560260B1
公开(公告)日：2003-05-06
申请号：US09201245
申请日：1998-11-30
IPC分类号： H01S500
CPC分类号： H01S5/22 , H01S2301/18
摘要： A GaAs based semiconductor laser has a combination of cladding layers including a ridge structure part and a remaining part sandwiching therebetween an etch stop layer. The remaining part overlies the entire surface of laser active layers and has a thickness “D” which satisfies D≧W×0.5 wherein W is the width of a spot size having a strength of 1/e2 for a near field pattern in the active layer in a direction perpendicular to the active layer, wherein “e” is the bottom of the natural logarithm.
摘要翻译： GaAs基半导体激光器具有包括脊结构部分和在其间夹有蚀刻停止层的剩余部分的包层的组合。 其余部分覆盖激光有源层的整个表面，并且具有满足D> = W×0.5的厚度“D”，其中W是在活动中的近场图案具有强度为1 / e2的光点尺寸的宽度 层，其中“e”是自然对数的底部。
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公开(公告)号：US07072373B2
公开(公告)日：2006-07-04
申请号：US10626104
申请日：2003-07-23
IPC分类号： H01S5/00
CPC分类号： H01S5/22 , H01S2301/18
摘要： A GaAs based semiconductor laser having a combination of cladding layers including a ridge structure part, and a remaining part which overlays the active layers of the laser, and an etch stop layer sandwiched between the ridge structure part and the remaining part. The remaining part preferably overlies the entire surface of laser active layers and has a thickness “D” which satisfies 1.1×W>D≧0.5×W wherein W is the width of a spot size having a strength of 1/e2 as measured at the laser front facet in a direction perpendicular to the active layers, wherein “e” is the base of the natural logarithm. The semiconductor laser solves the kink phenomenon to obtain an excellent linear relationship between the optical output power and the injected current.
摘要翻译： 一种GaAs基半导体激光器，其具有包括脊结构部分的包覆层和覆盖激光器的有源层的剩余部分和夹在脊部结构部分和其余部分之间的蚀刻停止层的组合。 其余部分优选地覆盖在激光有源层的整个表面上，并且具有满足1.1×W> D> = 0.5×W的厚度“D”，其中W是强度为1 / e 2的光点尺寸的宽度， / SUP>，在垂直于有源层的方向上在激光器前刻面处测量，其中“e”是自然对数的基数。 半导体激光器解决了扭结现象，以获得光输出功率和注入电流之间的良好的线性关系。
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公开(公告)号：US06393032B1
公开(公告)日：2002-05-21
申请号：US09100878
申请日：1998-06-22
申请人： Yoshikazu Ikegami
发明人： Yoshikazu Ikegami
IPC分类号： H04L12413
CPC分类号： H04W28/22 , H04L12/413 , H04W74/0816 , H04W84/12
摘要： There is provided a wireless LAN system including a wireless terminal which transmits a frame to and receives a frame from other wireless terminals for connecting wireless channel therebetween, and then transmits data to and receives data from the other wireless terminals through the wireless channel. The other wireless terminals stop transmission on receiving the frame from the wire terminal. The wireless terminal is designed to transmit a frame to and receive a frame from the other wireless terminals at a first data transfer rate for connecting wireless channel therebetween, and thereafter transmit data to and receive data from the other wireless terminals at a second date transfer rate greater than the first data transfer rate. The above-mentioned wireless LAN system ensures that wireless channel connection by means of RTS frame or CTS frame is established at a constant data transfer rate, for instance, at 2.0 Mbps, and data is transferred at a high rate, for instance, at 4.8 Mbps. Hence, when data is to be transferred at a high rate in an IEEE 802.11-standardized wireless LAN network area, a wireless terminal which transfers data at a low rate can surely realize establishment of wireless channel connection, resulting in that a problem of hidden wireless terminals can be solved.
摘要翻译： 提供了一种无线LAN系统，其包括：无线终端，其向其他无线终端发送帧并从其接收无线终端，并且接收来自其间的无线信道的帧，然后通过无线信道向其他无线终端发送数据并从其他无线终端接收数据。 其他无线终端从接线端子接收帧时停止传输。 无线终端被设计成以其第一数据传输速率从其他无线终端向其发送帧并在其间连接无线信道，然后以第二日期传送速率向其他无线终端发送数据并从其他无线终端接收数据 大于第一个数据传输速率。 上述无线LAN系统确保通过RTS帧或CTS帧的无线信道连接以恒定的数据传输速率建立，例如以2.0Mbps建立，并且数据以高速传输，例如以4.8 Mbps。 因此，当在IEEE 802.11标准化的无线LAN网络区域中要高速传输数据时，以低速传输数据的无线终端可以肯定地实现无线信道连接的建立，导致隐藏无线的问题 终端可以解决。
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公开(公告)号：US5828663A
公开(公告)日：1998-10-27
申请号：US564685
申请日：1995-12-01
申请人： Yoshikazu Ikegami
发明人： Yoshikazu Ikegami
IPC分类号： H04L12/28 , H04L12/413 , H04B7/204
摘要： A wireless-LAN terminal comprises a wired-LAN controller, a wireless modem and an access controller intervening between the wired-LAN controller and the wireless modem. In the access controller, the termination of data reception and the occurrence of a transmission request are detected by monitoring a frame-sense (FS) signal and a request-to-send (RTS) signal, respectively. An IFS period is generated by a delay timer when the data reception is terminated and a random amount of time is generated by using a backoff algorithm when the transmission request occurs during a transmission inhibition period. The data transmission is waited until the random amount of time comes to an end, and the data transmission is started when the random amount of time has elapsed and the transmission channel is available. Since a backoff period is determined randomly for each terminal, there is a remarkably reduced probability that a plurality of terminals concurrently start the media access for data transmission.
摘要翻译： 无线LAN终端包括有线LAN控制器，无线调制解调器和介于有线LAN控制器和无线调制解调器之间的接入控制器。 在访问控制器中，通过分别监视帧检测（FS）信号和请求发送（RTS）信号来检测数据接收的终止和发送请求的发生。 当数据接收结束时，由延迟定时器产生IFS周期，并且在发送禁止期间发生发送请求时，通过使用退避算法生成随机的时间量。 等待数据传输直到随机的时间量结束，并且当经过了随机的时间量并且传输信道可用时数据传输开始。 由于每个终端随机确定退避周期，所以多个终端同时开始媒体接入以进行数据传输的概率明显降低。
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公开(公告)号：US06522486B2
公开(公告)日：2003-02-18
申请号：US09767887
申请日：2001-01-24
IPC分类号： G02B702
CPC分类号： G02B6/4201 , G02B6/4248 , H01S5/02216 , H01S5/02284
摘要： An optical communication device which has an optical module including an optical element and a lens system optically coupled through a space and housed in a package, a supporting member for supporting the optical module, and a fixing member directly placed over the optical module for removably fixing the optical module on the supporting member, wherein the optical module is securely sandwiched between the supporting member and the fixing member, and a method of fixing the optical module for use in the optical communication device.
摘要翻译： 一种光通信装置，其具有包括光学元件和通过空间光耦合并容纳在封装中的透镜系统的光学模块，用于支撑光学模块的支撑构件和直接放置在光学模块上的固定构件，用于可拆卸地固定 所述支撑构件上的光学模块，其中所述光学模块被牢固地夹在所述支撑构件和所述固定构件之间，以及固定所述光学模块以用于所述光学通信装置的方法。
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公开(公告)号：US5774468A
公开(公告)日：1998-06-30
申请号：US553025
申请日：1995-11-03
CPC分类号： H04W74/0808 , H04W74/004 , H04W74/006
摘要： A terminal unit for a wireless communication network includes a wireless modem, a wire network controller, and a CPU. The modem can check whether a RTS signal is inputted or not during reception of communication data, and modulates communication data and performs wireless transmission of the data in response to the RTS signal when no communication data is being received, while it temporarily outputs a CTS signal and disables it thereafter in response to the RTS signal when communication data is being received. Upon reception of a data transmission request from the terminal unit, the controller outputs the RTS signal to the modem after completion of reception of communication data when the data is being received, or outputs the RTS signal to the modem when no communication data is being received. The controller determines interruption of data transmission and outputs a RTI signal when the CTS signal from the modem is temporarily input and disabled thereafter. The CPU requests the controller to perform data transmission, performs back-off processing upon reception of the RTI signal, and causes the controller to generate a RTS signal to the modem after a determined back-off period.
摘要翻译： 无线通信网络的终端单元包括无线调制解调器，有线网络控制器和CPU。 调制解调器可以在接收通信数据期间检查RTS信号是否被输入，并且当没有接收到通信数据时，调制通信数据并响应于RTS信号执行数据的无线传输，同时暂时输出CTS信号 并且当其正在接收通信数据时，响应于RTS信号而将其禁用。 当接收到来自终端单元的数据传输请求时，控制器在接收到数据时接收到通信数据完成后将RTS信号输出到调制解调器，或者当没有接收通信数据时将RTS信号输出到调制解调器 。 当来自调制解调器的CTS信号被临时输入并且此后禁用时，控制器确定数据传输的中断并输出RTI信号。 CPU请求控制器执行数据传输，在接收到RTI信号时执行退避处理，并使得控制器在确定的退避周期之后向调制解调器产生RTS信号。
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9.发明授权公开(公告)号：US06208332B1
公开(公告)日：2001-03-27
申请号：US09156067
申请日：1998-09-17
申请人： Yoshikazu Ikegami
发明人： Yoshikazu Ikegami
IPC分类号： G09G500
CPC分类号： G06F3/045
摘要： In a resistance film tablet system which includes a pair of resistance films superposed on each other and spaced by a predetermined distance therebetween, a value measured at the previous detection is stored in a memory beforehand and is read out for being converted into an analog voltage, then, a capacitance portion of the resistance films is charged with the voltage. The capacitance portion is converged to its convergent value faster, thereby a faster sampling can be operated. It is therefore possible to scan a resistance film tablet system faster by shortening a waiting time after a necessary mode setting, when measuring a voltage at a contact point in X-detection or Y-detection mode.
摘要翻译： 在包括彼此叠置并间隔预定距离的一对电阻膜的电阻胶片系统中，将先前检测时测量的值预先存储在存储器中，并将其读出以转换为模拟电压， 然后，电阻膜的电容部分被充电。 电容部分更快地会聚到其收敛值，从而可以更快地进行采样。 因此，在测量X检测或Y检测模式下的接点处的电压时，可以通过缩短必要模式设定后的等待时间来更快地扫描电阻胶片系统。
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公开(公告)号：US5959435A
公开(公告)日：1999-09-28
申请号：US962004
申请日：1997-10-31
申请人： Yoshikazu Ikegami
发明人： Yoshikazu Ikegami
CPC分类号： G06F1/28
摘要： In a battery-powered electronic apparatus having a microprocessor therein, any task is stopped running on the microprocessor in response to a check timing signal and, after the task is stopped running on the microprocessor, an output voltage of the battery is detected. Subsequently, after resuming the task running on the microprocessor, the remaining quantity of the battery is estimated based on the detected output voltage using a discharge characteristic of the battery.
摘要翻译： 在其中具有微处理器的电池供电的电子设备中，响应于检查定时信号在微处理器上停止任何任务，并且在任务在微处理器上停止运行之后，检测电池的输出电压。 随后，在恢复在微处理器上运行的任务之后，使用电池的放电特性，基于检测到的输出电压来估计电池的剩余量。
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