公开(公告)号：US06658157B1

公开(公告)日：2003-12-02

申请号：US09605035

申请日：2000-06-27

申请人： Kazushi Satoh ,  Takeshi Kubozono ,  Shintaro Okada ,  Yu Liu ,  Naofumi Yanagihara

发明人： Kazushi Satoh ,  Takeshi Kubozono ,  Shintaro Okada ,  Yu Liu ,  Naofumi Yanagihara

IPC分类号： G06K936

CPC分类号： H04N19/00 ,  G06F17/147 ,  H04N19/122 ,  H04N19/132 ,  H04N19/146 ,  H04N19/152 ,  H04N19/18 ,  H04N19/40 ,  H04N19/61 ,  H04N19/70

摘要： A technique is disclosed for reducing the bit rate of a bit stream coded into a compressed form according to the MPEG-2 standard, without causing significant degradation in image quality of a decoded image. An inverse DCT converter dequantizes a MPEG-2 bit stream and outputs resultant discrete cosine transform coefficients for each DCT block. A band limiter replaces the values of high-frequency components of the discrete cosine transform coefficients in the horizontal direction, with 0. A quantizer quantizes the discrete cosine transform coefficients using a quantization step value different from the original value.

摘要翻译： 公开了一种用于根据MPEG-2标准降低编码成压缩形式的比特流的比特率的技术，而不会导致解码图像的图像质量的显着劣化。 逆DCT转换器对MPEG-2比特流进行去量化，并输出每个DCT块的合成离散余弦变换系数。 频带限制器用水平方向将离散余弦变换系数的高频分量的值替换为0.量化器使用不同于原始值的量化步长值来量化离散余弦变换系数。

公开(公告)号：US06714592B1

公开(公告)日：2004-03-30

申请号：US09711331

申请日：2000-11-13

申请人： Yu Liu ,  Naofumi Yanagihara ,  Kazushi Sato ,  Takeshi Kubozono ,  Shintaro Okada

发明人： Yu Liu ,  Naofumi Yanagihara ,  Kazushi Sato ,  Takeshi Kubozono ,  Shintaro Okada

IPC分类号： H04N712

CPC分类号： H04N19/40 ,  H04N19/124 ,  H04N19/149 ,  H04N19/152 ,  H04N19/177 ,  H04N19/61

摘要： A picture information conversion method and apparatus in which, if the compressed picture information with a variable or non-recognized information volume is input, optimum compression processing on the compressed picture information is performed to prevent underflow and/or overflow to suppress deterioration of the picture quality. A compressed information analysis device 3 analyzes the structure of the picture type of the GOP of the compressed picture information input to the FF buffer 2. A bit allocation device 5 generates a pseudo GOP of the input compressed picture information, based on N frames stored in the FF buffer 2 and on the analysis result information stored in the information buffer 4, and allocates a pre-set code volume to respective pictures of the generated GOP so that the output compressed picture information will be at a second bitrate.

摘要翻译： 一种图像信息转换方法和装置，其中如果输入具有可变或未识别的信息量的压缩图像信息，则执行对压缩图像信息的最佳压缩处理以防止下溢和/或溢出以抑制图像的劣化 质量。 压缩信息分析装置3分析输入到FF缓冲器2的压缩图像信息的GOP的图像类型的结构。比特分配装置5基于存储在N帧中的N个帧来生成输入的压缩图像信息的伪GOP FF缓冲器2和存储在信息缓冲器4中的分析结果信息，并且将所预定的代码量分配给生成的GOP的各个图像，使得输出的压缩图像信息将处于第二位速率。

公开(公告)号：US06687296B1

公开(公告)日：2004-02-03

申请号：US09708255

申请日：2000-11-07

申请人： Kazushi Sato ,  Yu Liu ,  Naofumi Yanagihara

发明人： Kazushi Sato ,  Yu Liu ,  Naofumi Yanagihara

IPC分类号： H04N726

CPC分类号： H04N19/40 ,  H04N19/132 ,  H04N19/149 ,  H04N19/152 ,  H04N19/177 ,  H04N19/186 ,  H04N19/523 ,  H04N19/61

摘要： An apparatus and a method for transforming picture information can significantly reduce the bit rate. A picture information transform apparatus for receiving as input the compressed picture information obtained by coding the picture information of a plurality of picture type images by ways of orthogonal transform and motion compensation includes a variable length decoder 4 for performing a variable length decoding operation on the input compressed picture information, an inverse quantizer 5 for inversely quantizing the decoded information, a band limiter 7 for limiting the bandwidth, a quantizer 8 and a bit rate controller 9 for computationally determining the target bits for the coded images of each picture type by adaptively using a plurality of parameters operating as coefficients for the contents of the coded images of the picture type on the bais of the contents of the coded images of the picture type.

摘要翻译： 用于变换图像信息的装置和方法可以显着地降低比特率。 一种图像信息变换装置，用于作为输入接收通过正交变换和运动补偿的方式对多个图像类型图像的图像信息进行编码而获得的压缩图像信息，包括：可变长度解码器4，用于对输入进行可变长度解码操作 压缩图像信息，用于对解码信息进行逆量化的逆量化器5，用于限制带宽的频带限制器7，量化器8和比特率控制器9，用于通过自适应地使用每个图像类型的编码图像计算确定目标比特 作为图像类型的编码图像的内容的bais上的图像类型的编码图像的内容的系数的多个参数。

公开(公告)号：US09204800B2

公开(公告)日：2015-12-08

申请号：US13041559

申请日：2011-03-07

申请人： Yu Liu

发明人： Yu Liu

IPC分类号： G01B9/02 ,  A61B5/00

CPC分类号： A61B5/0066 ,  G01B9/02004 ,  G01B9/02027 ,  G01B9/0205 ,  G01B9/02057 ,  G01B9/02069 ,  G01B9/02091 ,  G01B2290/45

摘要： A signal interrogation system comprises an optical coupler to split input laser beam into a first laser beam as a power reference and a second laser beam, the optical coupler being coupled to a first path for the first laser beam and a second path for the second laser beam; an optical circulator disposed in the second path; a bi-directional optical switch disposed in the second path and having on one side a single channel end oriented toward the optical circulator and on another side multiple channel ends with multiple switchable channels; a plurality of optical fibers coupled to the multiple channel ends of the bi-directional optical switch; an interference optical signals path coupled to the optical circulator to receive the interference optical signals from the bi-directional switch; and a balanced photo detector to measure a power difference between the interference optical signals and the power reference.

摘要翻译： 信号询问系统包括光耦合器，用于将输入激光束分割为作为功率基准的第一激光束和第二激光束，所述光耦合器耦合到用于第一激光束的第一路径和用于第二激光器的第二路径 光束; 设置在所述第二路径中的光循环器; 设置在第二路径中并且在一侧具有朝向光循环器定向的单个通道端的双向光开关，并且在另一侧上，多个通道以多个可切换通道结束; 耦合到所述双向光开关的多个通道端的多个光纤; 干涉光信号路径，耦合到所述光环行器以接收来自所述双向开关的干涉光信号; 以及平衡光电检测器，用于测量干涉光信号与功率基准之间的功率差。

公开(公告)号：US09099972B2

公开(公告)日：2015-08-04

申请号：US13509619

申请日：2012-03-13

申请人： Yi Gao ,  James D. Barrus ,  William M. Kushner ,  Yu Liu ,  Li Xiao

发明人： Yi Gao ,  James D. Barrus ,  William M. Kushner ,  Yu Liu ,  Li Xiao

IPC分类号： H03G3/00 ,  H03G3/20 ,  H04M1/60

CPC分类号： H03G3/20 ,  H04M1/6041

摘要： A method and apparatus for adaptively controlling the audio output (122) of a communication device (114) according to the noise characteristics of the receiver listening environment (119). An output volume for the communication device (114) is set by a user (e.g., listener 118). The communication device (114) can intermittently sample ambient noise (116) of its environment (119). A minimum signal to noise threshold can be established for audio output (122). A total adjustment for the audio output (122) is established based on the ambient noise (116), the user set output volume, and the minimum signal to noise threshold. The total adjustment is a product of a software volume adjustment (230) and a hardware gain adjustment (240). The software volume adjustment (230) and the hardware gain adjustment (240) is adaptively applied when the communication device (114) outputs audio (122).

摘要翻译： 一种用于根据接收机收听环境（119）的噪声特性自适应地控制通信设备（114）的音频输出（122）的方法和装置。 通信设备（114）的输出音量由用户（例如，听众118）设置。 通信设备（114）可以间歇地对其环境（119）的环境噪声（116）进行采样。 可以为音频输出（122）建立最小信号噪声阈值。 基于环境噪声（116），用户设定输出音量和最小信号噪声阈值来建立音频输出（122）的总体调整。 总体调整是软件音量调整（230）和硬件增益调整（240）的产物。 当通信设备（114）输出音频（122）时，自适应地应用软件音量调节（230）和硬件增益调整（240）。

公开(公告)号：US20150131441A1

公开(公告)日：2015-05-14

申请号：US14382412

申请日：2012-06-29

申请人： Baiqiu Huang ,  Yu Liu ,  Jun Feng ,  Chao Yao

发明人： Baiqiu Huang ,  Yu Liu ,  Jun Feng ,  Chao Yao

IPC分类号： H04W28/08

CPC分类号： H04W28/08 ,  H04W16/08 ,  H04W48/06 ,  H04W76/28

摘要： A load balancing method and system is provided. When a terminal enters an idle, access or service state, and a base station determines that the terminal is in a multi-band covering section, load conditions of the bands in the section are recorded; and when determining that a preset idle or access or service state condition is met based on the recorded load conditions of the bands in the section, the base station performs load balancing control on the terminal. For the terminal in the idle, access or service state, load balancing for a multi-band network can be implemented.

摘要翻译： 提供负载平衡方法和系统。 当终端进入空闲，接入或服务状态，并且基站确定终端处于多频带覆盖部分时，记录该部分中频带的负载条件; 并且当基于所述区段中的所述频带的所记录的负载条件来确定满足预设的空闲或访问或服务状态条件时，所述基站对所述终端执行负载均衡控制。 对于处于空闲，接入或业务状态的终端，可以实现多频带网络的负载均衡。

公开(公告)号：US20150016633A1

公开(公告)日：2015-01-15

申请号：US13509619

申请日：2012-03-13

申请人： Yi Gao ,  James D. Barrus ,  William M. Kushner ,  Yu Liu ,  Li Xiao

发明人： Yi Gao ,  James D. Barrus ,  William M. Kushner ,  Yu Liu ,  Li Xiao

IPC分类号： H03G3/20

CPC分类号： H03G3/20 ,  H04M1/6041

摘要： A method and apparatus for adaptively controlling the audio output (122) of a communication device (114) according to the noise characteristics of the receiver listening environment (119). An output volume for the communication device (114) is set by a user (e.g., listener 118). The communication device (114) can intermittently sample ambient noise (116) of its environment (119). A minimum signal to noise threshold can be established for audio output (122). A total adjustment for the audio output (122) is established based on the ambient noise (116), the user set output volume, and the minimum signal to noise threshold. The total adjustment is a product of a software volume adjustment (230) and a hardware gain adjustment (240). The software volume adjustment (230) and the hardware gain adjustment (240) is adaptively applied when the communication device (114) outputs audio (122).

摘要翻译： 一种用于根据接收机收听环境（119）的噪声特性自适应地控制通信设备（114）的音频输出（122）的方法和装置。 通信设备（114）的输出音量由用户（例如，听众118）设置。 通信设备（114）可以间歇地对其环境（119）的环境噪声（116）进行采样。 可以为音频输出（122）建立最小信号噪声阈值。 基于环境噪声（116），用户设定输出音量和最小信号噪声阈值来建立音频输出（122）的总体调整。 总体调整是软件音量调整（230）和硬件增益调整（240）的产物。 当通信设备（114）输出音频（122）时，自适应地应用软件音量调节（230）和硬件增益调整（240）。

公开(公告)号：US08878603B2

公开(公告)日：2014-11-04

申请号：US13530818

申请日：2012-06-22

申请人： Yu Liu ,  Xiaofeng Shen ,  Jianhua Zhang

发明人： Yu Liu ,  Xiaofeng Shen ,  Jianhua Zhang

IPC分类号： H03D3/00 ,  H03K9/08 ,  G01R29/027

CPC分类号： G01R29/0273 ,  G01R29/02

摘要： A device for detecting a PWM wave, comprising: a PWM wave generating module, configured to generate the PWM wave; a detecting module coupled to the PWM wave generating module, configured to receive the PWM wave and to determine an electric level of the PWM wave; a timer coupled to the detecting module, configured to start a counting when the detecting module receives the PWM wave, and to interrupt the counting when the counting reaches a predetermined value, the detecting module determining whether the electric level of the PWM wave is a high electric level or a low electric level when the counting is interrupted; and a calculating module coupled to the detecting module, configured to calculate a duty ratio of the PWM wave based on a number of high electric level and a number of low electric level of the PWM wave determined within one period of the PWM wave.

摘要翻译： 一种用于检测PWM波的装置，包括：PWM波发生模块，用于产生PWM波; 耦合到所述PWM波发生模块的检测模块，被配置为接收所述PWM波并确定所述PWM波的电平; 耦合到所述检测模块的定时器，被配置为当所述检测模块接收到所述PWM波时开始计数，并且当所述计数达到预定值时中断所述计数，所述检测模块确定所述PWM波的电平是否为高 计数中断时的电平或低电平; 以及耦合到所述检测模块的计算模块，被配置为基于在所述PWM波的一个周期内确定的所述PWM电波的数量和所述PWM波的低电平的数量来计算所述PWM波的占空比。

公开(公告)号：US08814351B2

公开(公告)日：2014-08-26

申请号：US13325078

申请日：2011-12-14

申请人： Cedric Begon ,  Aude Lapprand ,  Yves LeClaire ,  Yu Liu ,  Christelle Marck

发明人： Cedric Begon ,  Aude Lapprand ,  Yves LeClaire ,  Yu Liu ,  Christelle Marck

IPC分类号： G02C3/00

CPC分类号： B29D11/0073 ,  G02B1/105 ,  G02B1/14 ,  G02C7/02

摘要： An ophthalmic lens includes: a transparent ophthalmic lens substrate made of organic glass; an adhesive layer covering at least one of the faces of the transparent substrate; a transparent film made of a thermoplastic polymer fixed to the transparent substrate via the adhesive layer; and an abrasion-resistant coating covering the transparent thermoplastic polymer film, characterized in that the ophthalmic lens has a minimum thickness at the center of less than 2 mm, preferably less than 1.5 mm and even more preferably less than 1.2 mm. Two processes for manufacturing such a lens and the use of an adhesive multilayer film to improve the impact strength of such a lens are also described.

摘要翻译： 一种眼用透镜，包括：由有机玻璃制成的透明眼镜片基材; 覆盖所述透明基板的至少一个面的粘合剂层; 由通过粘合剂层固定到透明基板的热塑性聚合物制成的透明膜; 以及覆盖所述透明热塑性聚合物膜的耐磨涂层，其特征在于，所述眼科镜片在中心处的最小厚度小于2mm，优选小于1.5mm，甚至更优选小于1.2mm。 还描述了用于制造这种透镜的两个方法和使用粘合剂多层膜来改善这种透镜的冲击强度。

公开(公告)号：US20130313575A1

公开(公告)日：2013-11-28

申请号：US13976351

申请日：2011-12-06

申请人： Xiaolong Chen ,  Chunjun Liu ,  Tonghua Peng ,  Longyuan Li ,  Bo Wang ,  Gang Wang ,  Wenjun Wang ,  Yu Liu

发明人： Xiaolong Chen ,  Chunjun Liu ,  Tonghua Peng ,  Longyuan Li ,  Bo Wang ,  Gang Wang ,  Wenjun Wang ,  Yu Liu

IPC分类号： H01L29/16 ,  H01L21/02

CPC分类号： H01L29/1608 ,  C30B23/00 ,  C30B23/002 ,  C30B23/005 ,  C30B23/06 ,  C30B29/36 ,  H01L21/02529 ,  H01L29/435

摘要： A semi-insulating silicon carbide monocrystal and a method of growing the same are disclosed. The semi-insulating silicon carbide monocrystal comprises intrinsic impurities, deep energy level dopants and intrinsic point defects. The intrinsic impurities are introduced unintentionally during manufacture of the silicon carbide monocrystal, and the deep energy level dopants and the intrinsic point defects are doped or introduced intentionally to compensate for the intrinsic impurities. The intrinsic impurities include shallow energy level donor impurities and shallow energy level acceptor impurities. A sum of a concentration of the deep energy level dopants and a concentration of the intrinsic point defects is greater than a difference between a concentration of the shallow energy level donor impurities and a concentration of the shallow energy level acceptor impurities, and the concentration of the intrinsic point defects is less than the concentration of the deep energy level dopants. The semi-insulating SiC monocrystal has resistivity greater than 1×105 Ω·cm at room temperature, and its electrical performances and crystal quality satisfy requirements for manufacture of microwave devices. The deep energy level dopants and the intrinsic point defects jointly serve to compensate the intrinsic impurities, so as to obtain a high quality semi-insulating single crystal.

摘要翻译： 公开了一种半绝缘碳化硅单晶及其生长方法。 半绝缘碳化硅单晶包括固有杂质，深能级掺杂剂和固有点缺陷。 在碳化硅单晶的制造期间无意中引入固有杂质，并且有意地掺杂或引入深能级掺杂剂和固有点缺陷以补偿固有杂质。 本征杂质包括浅能级供体杂质和浅能级受体杂质。 深能级掺杂剂的浓度和本征点缺陷的浓度的总和大于浅能级供体杂质的浓度与浅能级受体杂质的浓度之间的差异， 内在点缺陷小于深能级掺杂剂的浓度。 半绝缘SiC单晶在室温下的电阻率大于1×105Ω·cm，其电性能和晶体质量满足微波器件制造要求。 深能级掺杂剂和固有点缺陷共同用于补偿固有杂质，从而获得高质量的半绝缘单晶。