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    • 4. 发明授权
    • Wavelength locker using modulator current and photodetector
    • 波长锁定器使用调制器电流和光电检测器
    • US07372879B2
    • 2008-05-13
    • US11006032
    • 2004-12-06
    • Giorgio GiarettaYuxin Zhou
    • Giorgio GiarettaYuxin Zhou
    • H01S3/10H01S3/13
    • G01J9/00H01S5/0014H01S5/02212H01S5/02292H01S5/02415H01S5/026H01S5/0601H01S5/06837H01S5/0687
    • The wavelength of light emitted by a laser and modulated by a frequency response modulator is determined from the power of the emitted light and the current drawn by the modulator. From the temperature and current applied to the modulator and the optical power of the emitted light; the wavelength of the beam of light is determined as a function of a ratio of the current and power for each temperature of operation. As the wavelength of the emitted light shifts, for example as the laser ages or the laser temperature shifts, the inventive methods and devices then detect the wavelength shift and implement any necessary adjustments in the operating conditions of the laser diode. For example, a thermoelectric cooler can be used to heat or cool the laser diode as necessary to thereby adjust the wavelength of the emitted light.
    • 由激光发射并由频率响应调制器调制的光的波长由发射光的功率和由调制器汲取的电流确定。 从施加到调制器的温度和电流以及发射光的光功率; 光束的波长被确定为每个操作温度的电流和功率的比率的函数。 当发射的光的波长发生变化时,例如当激光老化或激光温度偏移时,本发明的方法和装置然后检测波长偏移并且在激光二极管的工作条件下实现任何必要的调整。 例如,可以使用热电冷却器来根据需要加热或冷却激光二极管,从而调节发射光的波长。
    • 5. 发明申请
    • WEARABLE HEARTBEAT AND BREATHING WAVEFORM CONTINUOUS MONITORING SYSTEM
    • 可穿戴的心脏和呼吸波形连续监测系统
    • US20140350424A1
    • 2014-11-27
    • US14284655
    • 2014-05-22
    • Xiaosong DuYuxin Zhou
    • Xiaosong DuYuxin Zhou
    • A61B5/0452A61B5/0432
    • Apparatus and method are provided to collect and analyze heartbeat waveforms. In one novel aspect, the heartbeat waveforms are collected from wearable devices. In one embodiment, the wearable device collects heartbeat waveforms by attaching the device to the patient for a long period and sends the collected waveforms to a receiver through a wireless network. In another novel aspect, an application program is installed in a smart device to receive heartbeat waveforms from one or more wearable devices. The application program either relays the received waveform to a remote processing center or processes the data before sending. In another novel aspect, an analysis method compares received patient's current heartbeat waveform with historic data. In one embodiment, the historic data are stored in a cloud-based database. In another novel aspect, the remote processing center is an open platform data center, which takes in certified third party inputs.
    • 提供装置和方法来收集和分析心跳波形。 在一个新颖的方面,心跳波形从可穿戴设备收集。 在一个实施例中,可穿戴设备通过将设备长时间地附接到患者来收集心跳波形,并通过无线网络将收集的波形发送到接收器。 在另一个新颖的方面,将应用程序安装在智能设备中以从一个或多个可穿戴设备接收心跳波形。 应用程序可以将接收到的波形中继到远程处理中心,也可以在发送前处理数据。 在另一个新颖的方面,分析方法将接收到的患者的当前心跳波形与历史数据进行比较。 在一个实施例中,历史数据被存储在基于云的数据库中。 在另一个新颖的方面,远程处理中心是一个开放平台数据中心,它接受认证的第三方输入。
    • 8. 发明授权
    • Bias control in an optical modulator and transmitter
    • 光调制器和发射机中的偏置控制
    • US08543010B2
    • 2013-09-24
    • US13033502
    • 2011-02-23
    • Yuxin ZhouHock Gin Lim
    • Yuxin ZhouHock Gin Lim
    • H04B10/04H04J14/02
    • H04B10/50575H04B10/572
    • An apparatus and method for controlling bias in an optical modulator is disclosed. The method is particularly applicable to controlling multi-wavelength modulators and wavelength-tunable transmitters. At a calibration stage, a desired optical performance of the modulator is achieved, and an amplitude of a peak-to-peak variation of the output optical signal at a pre-determined amount of dither is stored in a memory as a reference. At operating stage, a controller of the optical modulator adjusts a bias voltage of the modulator until the measured peak-to-peak optical signal variation matches the reference value stored at the calibration stage. For multi-wavelength modulators and tunable transmitters, the calibration is repeated at each wavelength, and corresponding peak-to-peak optical signal variations are stored in the memory.
    • 公开了一种用于控制光调制器中的偏置的装置和方法。 该方法特别适用于控制多波长调制器和波长可调发射机。 在校准阶段,实现调制器的期望的光学性能,并且以预定量的抖动将输出光信号的峰 - 峰变化的幅度作为参考存储在存储器中。 在操作阶段,光调制器的控制器调节调制器的偏置电压,直到所测量的峰 - 峰光信号变化与存储在校准阶段的参考值相匹配。 对于多波长调制器和可调谐发射器,在每个波长处重复校准,并且对应的峰 - 峰光信号变化存储在存储器中。
    • 9. 发明申请
    • COMPUTATION OF STACK USAGE IN EMBEDDED COMPUTING SYSTEMS
    • 嵌入式计算系统中堆栈使用的计算
    • US20100131803A1
    • 2010-05-27
    • US12323366
    • 2008-11-25
    • William E. LamieYuxin Zhou
    • William E. LamieYuxin Zhou
    • G06F11/36G06F9/45
    • G06F11/3604G06F8/433G06F11/3612
    • A method to facilitate memory allocation includes examining an executable program file configured to be executed by a processor to identify a group of functions present within the executable program file, and calculating memory requirements for each function of the group of functions. Further operations include identifying a plurality of root functions as functions which are not referred to by other functions, creating a function call tree for each of the plurality of root functions, such that each of the function call trees comprise functions which are directly or indirectly referred to by an associated one of the plurality of root functions, and calculating memory requirements for one or more function call paths of each of the function call trees based upon the calculated memory requirements of the functions included within the one or more function call paths.
    • 便于存储器分配的方法包括检查被配置为由处理器执行以识别可执行程序文件中存在的一组功能的可执行程序文件,以及计算该组功能的每个功能的存储器要求。 进一步的操作包括将多个根功能识别为不被其他功能参照的功能,为多个根功能中的每个功能创建功能调用树,使得每个功能调用树包括直接或间接引用的功能 通过所述多个根功能中的相关联的一个功能,并且基于所计算的所述一个或多个功能呼叫路径中包括的功能的存储器需求来计算每个所述功能调用树的一个或多个功能调用路径的存储器需求。