公开(公告)号：US20090207746A1

公开(公告)日：2009-08-20

申请号：US12242569

申请日：2008-09-30

申请人： Lu Yuan ,  Danlu Zhang ,  Mehraban Iraninejad ,  Sharad Sambhwani

发明人： Lu Yuan ,  Danlu Zhang ,  Mehraban Iraninejad ,  Sharad Sambhwani

IPC分类号： H04L12/26

CPC分类号： H04B17/382 ,  H04B17/345

摘要： Techniques for estimating thermal noise and rise-over-thermal (RoT) in a communication system are described. Thermal noise in a sideband may be measured and used as an estimate of thermal noise in a signal band. In one design, samples containing a desired signal centered at DC or a frequency higher than DC may be partitioned into blocks of K samples. Each block of K samples may be transformed with an FFT to obtain a corresponding block of K transform coefficients for K frequency bins. The power of transform coefficients for frequency bins in the sideband may be computed. Thermal noise may be estimated based on power values for the frequency bins in the sideband. Power values for frequency bins in the signal band may also be obtained and used to estimate total received power. RoT may then be estimated based on the estimated thermal noise and the estimated total received power.

摘要翻译： 描述了用于估计通信系统中的热噪声和上升热（RoT）的技术。 可以测量边带中的热噪声并将其用作信号频带中的热噪声的估计。 在一种设计中，包含以DC或高于DC的频率为中心的期望信号的样本可被划分为K个样本的块。 可以用FFT对K个采样的每个块进行变换，以获得用于K个频率仓的K个变换系数的相应块。 可以计算边带中频率仓的变换系数的幂。 可以基于边带中的频率仓的功率值来估计热噪声。 也可以获得信号频带中的频率仓的功率值并用于估计总接收功率。 然后可以基于估计的热噪声和估计的总接收功率来估计RoT。

公开(公告)号：US08264975B2

公开(公告)日：2012-09-11

申请号：US12242569

申请日：2008-09-30

申请人： Lu Yuan ,  Danlu Zhang ,  Mehraban Iraninejad ,  Sharad Sambhwani

发明人： Lu Yuan ,  Danlu Zhang ,  Mehraban Iraninejad ,  Sharad Sambhwani

IPC分类号： H04L12/26 ,  H04J11/00

CPC分类号： H04B17/382 ,  H04B17/345

摘要： Techniques for estimating thermal noise and rise-over-thermal (RoT) in a communication system are described. Thermal noise in a sideband may be measured and used as an estimate of thermal noise in a signal band. In one design, samples containing a desired signal centered at DC or a frequency higher than DC may be partitioned into blocks of K samples. Each block of K samples may be transformed with an FFT to obtain a corresponding block of K transform coefficients for K frequency bins. The power of transform coefficients for frequency bins in the sideband may be computed. Thermal noise may be estimated based on power values for the frequency bins in the sideband. Power values for frequency bins in the signal band may also be obtained and used to estimate total received power. RoT may then be estimated based on the estimated thermal noise and the estimated total received power.

摘要翻译： 描述了用于估计通信系统中的热噪声和上升热（RoT）的技术。 可以测量边带中的热噪声并将其用作信号频带中的热噪声的估计。 在一种设计中，包含以DC或高于DC的频率为中心的期望信号的样本可被划分为K个样本的块。 可以用FFT对K个采样的每个块进行变换，以获得用于K个频率仓的K个变换系数的相应块。 可以计算边带中频率仓的变换系数的幂。 可以基于边带中的频率仓的功率值来估计热噪声。 也可以获得信号频带中的频率仓的功率值并用于估计总接收功率。 然后可以基于估计的热噪声和估计的总接收功率来估计RoT。

公开(公告)号：US08254279B2

公开(公告)日：2012-08-28

申请号：US12107013

申请日：2008-04-21

申请人： Charles E. Wheatley, III ,  Avneesh Agrawal ,  Danlu Zhang ,  Sharad Deepak Sambhwani ,  Lu Yuan ,  Mehraban Iraninejad

发明人： Charles E. Wheatley, III ,  Avneesh Agrawal ,  Danlu Zhang ,  Sharad Deepak Sambhwani ,  Lu Yuan ,  Mehraban Iraninejad

IPC分类号： H04J3/14 ,  H04W4/00

CPC分类号： H04B17/382 ,  H04B17/345

摘要： Techniques for estimating thermal noise and rise-over-thermal (RoT) in a communication system are described. In an aspect, thermal noise in a sideband may be measured and used to estimate thermal noise in a signal band. In one design, received power in the sideband may be measured, e.g., by computing total power of FFT transform coefficients within the sideband. Thermal noise may be estimated based on (e.g., by filtering) the measured received power in the sideband. Received power in the signal band may also be measured. Total received power may be estimated based on (e.g., by filtering) the measured received power in the signal band. RoT may then be estimated based on the estimated thermal noise and the estimated total received power. The estimated RoT may be used to estimate an available load for a cell, which may be used to admit and/or schedule users in the cell.

摘要翻译： 描述了用于估计通信系统中的热噪声和上升热（RoT）的技术。 在一方面，边带中的热噪声可以被测量并用于估计信号频带中的热噪声。 在一种设计中，边带中的接收功率可以例如通过计算边带内的FFT变换系数的总功率来测量。 可以基于（例如，通过滤波）边带中的测量的接收功率来估计热噪声。 也可以测量信号频带中的接收功率。 可以基于（例如，通过滤波）在信号频带中测量的接收功率来估计总接收功率。 然后可以基于估计的热噪声和估计的总接收功率来估计RoT。 估计的RoT可以用于估计小区的可用负载，其可以用于接纳和/或调度小区中的用户。

公开(公告)号：US20080267086A1

公开(公告)日：2008-10-30

申请号：US12107013

申请日：2008-04-21

申请人： Charles E. Wheatley ,  Avneesh Agrawal ,  Danlu Zhang ,  Sharad Deepak Sambhwani ,  Lu Yuan ,  Mehraban Iraninejad

发明人： Charles E. Wheatley ,  Avneesh Agrawal ,  Danlu Zhang ,  Sharad Deepak Sambhwani ,  Lu Yuan ,  Mehraban Iraninejad

IPC分类号： H04L12/26

CPC分类号： H04B17/382 ,  H04B17/345

摘要： Techniques for estimating thermal noise and rise-over-thermal (RoT) in a communication system are described. In an aspect, thermal noise in a sideband may be measured and used to estimate thermal noise in a signal band. In one design, received power in the sideband may be measured, e.g., by computing total power of FFT transform coefficients within the sideband. Thermal noise may be estimated based on (e.g., by filtering) the measured received power in the sideband. Received power in the signal band may also be measured. Total received power may be estimated based on (e.g., by filtering) the measured received power in the signal band. RoT may then be estimated based on the estimated thermal noise and the estimated total received power. The estimated RoT may be used to estimate an available load for a cell, which may be used to admit and/or schedule users in the cell.

摘要翻译： 描述了用于估计通信系统中的热噪声和上升热（RoT）的技术。 在一方面，边带中的热噪声可以被测量并用于估计信号频带中的热噪声。 在一种设计中，边带中的接收功率可以例如通过计算边带内的FFT变换系数的总功率来测量。 可以基于（例如，通过滤波）边带中的测量的接收功率来估计热噪声。 也可以测量信号频带中的接收功率。 可以基于（例如，通过滤波）在信号频带中测量的接收功率来估计总接收功率。 然后可以基于估计的热噪声和估计的总接收功率来估计RoT。 估计的RoT可以用于估计小区的可用负载，其可以用于接纳和/或调度小区中的用户。

公开(公告)号：US08477734B2

公开(公告)日：2013-07-02

申请号：US12410154

申请日：2009-03-24

申请人： Sharad Deepak Sambhwani ,  Wei Zeng ,  Yibo Jiang ,  Lu Yuan ,  Mehmet Yavuz ,  Pavan Kumar Vitthaladevuni ,  Bibhu P. Mohanty ,  Danlu Zhang ,  Aziz Gholmieh ,  Arjun Bharadwaj

发明人： Sharad Deepak Sambhwani ,  Wei Zeng ,  Yibo Jiang ,  Lu Yuan ,  Mehmet Yavuz ,  Pavan Kumar Vitthaladevuni ,  Bibhu P. Mohanty ,  Danlu Zhang ,  Aziz Gholmieh ,  Arjun Bharadwaj

IPC分类号： H04W4/00

CPC分类号： H04L1/0026 ,  H04L1/1671

摘要： Techniques for reporting acknowledgement (ACK) information and channel quality indication (CQI) information in a wireless communication system are described. A user equipment (UE) may be able to receive data from up to two cells with dual-cell operation. The UE may determine CQI information for a first cell, determine CQI information for a second cell, and send the CQI information for both cells on a feedback channel with a single channelization code. The UE may process a control channel from each cell and, if control information is received from the cell, may further process a data channel from the cell to receive data sent to the UE. The UE may determine ACK information for each cell based on processing results for the data and control channels from that cell. The UE may send the ACK information for both cells on the feedback channel with the single channelization code.

摘要翻译： 描述了在无线通信系统中报告确认（ACK）信息和信道质量指示（CQI）信息的技术。 用户设备（UE）可以能够以双小区操作从多达两个小区接收数据。 UE可以确定第一小区的CQI信息，确定第二小区的CQI信息，并且在具有单个信道化码的反馈信道上发送用于两个小区的CQI信息。 UE可以处理来自每个小区的控制信道，并且如果从小区接收到控制信息，则可以进一步处理来自小区的数据信道以接收发送给UE的数据。 UE可以基于来自该小区的数据和控制信道的处理结果来确定每个小区的ACK信息。 UE可以使用单个信道化码在反馈信道上发送两个小区的ACK信息。

公开(公告)号：US20090245212A1

公开(公告)日：2009-10-01

申请号：US12410154

申请日：2009-03-24

申请人： Sharad Deepak Sambhwani ,  Wei Zeng ,  Yibo Jiang ,  Lu Yuan ,  Mehmet Yavuz ,  Pavan Kumar Vitthaladevuni ,  Bibhu P. Mohanty ,  Danlu Zhang ,  Aziz Gholmieh ,  Arjun Bharadwaj

发明人： Sharad Deepak Sambhwani ,  Wei Zeng ,  Yibo Jiang ,  Lu Yuan ,  Mehmet Yavuz ,  Pavan Kumar Vitthaladevuni ,  Bibhu P. Mohanty ,  Danlu Zhang ,  Aziz Gholmieh ,  Arjun Bharadwaj

IPC分类号： H04J3/00 ,  H04W8/00

CPC分类号： H04L1/0026 ,  H04L1/1671

摘要： Techniques for reporting acknowledgement (ACK) information and channel quality indication (CQI) information in a wireless communication system are described. A user equipment (UE) may be able to receive data from up to two cells with dual-cell operation. The UE may determine CQI information for a first cell, determine CQI information for a second cell, and send the CQI information for both cells on a feedback channel with a single channelization code. The UE may process a control channel from each cell and, if control information is received from the cell, may further process a data channel from the cell to receive data sent to the UE. The UE may determine ACK information for each cell based on processing results for the data and control channels from that cell. The UE may send the ACK information for both cells on the feedback channel with the single channelization code.

摘要翻译： 描述了在无线通信系统中报告确认（ACK）信息和信道质量指示（CQI）信息的技术。 用户设备（UE）可以能够以双小区操作从多达两个小区接收数据。 UE可以确定第一小区的CQI信息，确定第二小区的CQI信息，并且在具有单个信道化码的反馈信道上发送用于两个小区的CQI信息。 UE可以处理来自每个小区的控制信道，并且如果从小区接收到控制信息，则可以进一步处理来自小区的数据信道以接收发送给UE的数据。 基于来自该小区的数据和控制信道的处理结果，UE可以确定每个小区的ACK信息。 UE可以使用单个信道化码在反馈信道上发送两个小区的ACK信息。

公开(公告)号：US20120314971A1

公开(公告)日：2012-12-13

申请号：US13155202

申请日：2011-06-07

申请人： Lu Yuan ,  Jian Sun

发明人： Lu Yuan ,  Jian Sun

IPC分类号： G06K9/40

CPC分类号： G06T5/008

摘要： Techniques for automatic exposure correction of images are provided. In particular, the exposure of an input image may be improved by automatically modifying a non-linear function that characterizes the luminance of shadow, mid-tone, and highlight portions of the image. The input image may be segmented into a number of regions and each region is assigned a zone, where the zone indicates a specified range of luminance values. An initial zone assigned to a region of the image may be changed in order to reflect an optimal zone of the region. Based, in part, on the optimal zones for each region of the image, luminance modification parameters may be calculated and applied to the non-linear function in order to produce a modified version of the input image that improves the appearance of overexposed and/or underexposed regions of the input image.

摘要翻译： 提供了图像自动曝光校正技术。 特别地，可以通过自动修改表征图像的阴影，中间色调和高光部分的亮度的非线性函数来改善输入图像的曝光。 输入图像可以被分割成多个区域，并且每个区域被分配一个区域，其中该区域指示指定的亮度值范围。 可以改变分配给图像的区域的初始区域，以便反映该区域的最佳区域。 基于部分地基于图像的每个区域的最佳区域，可以计算亮度修改参数并将其应用于非线性函数，以便产生输入图像的修改版本，其改善曝光过度和/或 输入图像的曝光不足区域。

公开(公告)号：US20100074552A1

公开(公告)日：2010-03-25

申请号：US12237126

申请日：2008-09-24

申请人： Jian Sun ,  Heung-Yeung Shum ,  Lu Yuan ,  Long Quan

发明人： Jian Sun ,  Heung-Yeung Shum ,  Lu Yuan ,  Long Quan

IPC分类号： G06K9/40

CPC分类号： G06T5/003 ,  G06T2207/20016 ,  G06T2207/20028

摘要： Embodiments related to the removal of blur from an image are disclosed. One disclosed embodiment provides a method of performing an iterative non-blind deconvolution of a blurred image to form an updated image. The method comprises downsampling the blurred image to form a blurred image pyramid comprising images of two or more different resolution scales, downsampling a blur kernel to form a blur kernel pyramid comprising kernels of two or more different sizes, and deconvoluting a selected image in the blurred image pyramid according to a Richardson-Lucy deconvolution process in which a bilateral range/spatial filter is employed.

摘要翻译： 公开了从图像中去除模糊的实施例。 一个公开的实施例提供了一种执行模糊图像的迭代非盲去卷积以形成更新图像的方法。 该方法包括对模糊图像进行下采样以形成包含两个或多个不同分辨率尺度的图像的模糊图像金字塔，对模糊核心进行下采样以形成包含两个或更多个不同大小的粒子的模糊核心金字塔，并且对模糊的所选图像进行解卷积 图像金字塔根据理查森 - 露西反卷积过程，其中采用双边范围/空间滤波器。

公开(公告)号：US20050010703A1

公开(公告)日：2005-01-13

申请号：US10913606

申请日：2004-08-05

申请人： Hugo Cheung ,  Lu Yuan ,  Ramesh Saripalli

发明人： Hugo Cheung ,  Lu Yuan ,  Ramesh Saripalli

IPC分类号： G06F13/38 ,  G06F13/28

CPC分类号： G06F13/385

摘要： An improved high performance scheme is provided with a serial peripheral interface (SPI) to enable microcontroller-based products and other components and devices to achieve a higher serial transmit and receive data rate. An exemplary technique utilizes a CPU and an SPI having a circular FIFO structure. To prevent the memory traffic associated with any SPI accesses from conflicting with other CPU memory accesses, the technique utilizes cycle stealing direct memory access techniques for SPI data transfers with the memory. During a CPU read/write sequence, data is read/written from/to the memory through a virtual special function register (SFR). Once the virtual SFR access is detected, all accesses are redirected to the circular FIFO buffer memory, with no additional pipelining necessary. The CPU pointers can suitably increment as appropriately controlled by hardware. In addition, once an SPI transmit/receive request is made, data communication can be established between the transmit/receive buffer and the memory. To avoid structural hazard, the transmit/receive request can be suitably pipelined until the next available clock phase, for example, within one instruction cycle. As a result, for a 4 Mhz clock rate, the technique can enable a significantly higher data transfer rate, e.g., at 250 Kbytes per second, an improvement of almost twenty times the prior art data rates. The high performance technique also avoids the firmware overhead with minimum hardware control cost. For example, compared to the hardware approach using deeper buffer structures, e.g., with FIFO buffers implemented using flip-flop devices, the exemplary techniques utilize memory, e.g., dynamic or static random access memory (DRAM or SRAM) with direct memory access (DMA).

摘要翻译： 提供了一种改进的高性能方案，其具有串行外围接口（SPI），以使基于微控制器的产品和其他组件和设备能够实现更高的串行发送和接收数据速率。 一种示例性技术利用具有圆形FIFO结构的CPU和SPI。 为了防止与任何SPI访问相关联的存储器流量与其他CPU存储器访问冲突，该技术利用循环窃取直接存储器访问技术来与存储器进行SPI数据传输。 在CPU读/写序列期间，数据通过虚拟专用功能寄存器（SFR）从/读取/写入存储器。 一旦检测到虚拟SFR访问，所有访问都被重定向到循环FIFO缓冲存储器，而不需要额外的流水线。 CPU指针可以适当地递增，由硬件适当控制。 另外，一旦进行了SPI发送/接收请求，就可以在发送/接收缓冲器和存储器之间建立数据通信。 为了避免结构性的危害，发送/接收请求可以被适当地流水线化，直到下一个可用的时钟相位，例如在一个指令周期内。 因此，对于4 Mhz时钟速率，该技术可以实现显着更高的数据传输速率，例如，以每秒250 KB的速度提高近现有技术数据速率的二十倍。 高性能技术也可以以最小的硬件控制成本来避免固件开销。 例如，与使用更深的缓冲结构的硬件方法相比，例如，利用使用触发器装置实现的FIFO缓冲器，示例性技术利用存储器，例如具有直接存储器访问（DMA或DRAM）的动态或静态随机存取存储器（DRAM或SRAM） ）。

公开(公告)号：US5589095A

公开(公告)日：1996-12-31

申请号：US315787

申请日：1994-09-30

申请人： Lin-Sen Yuan ,  Lu Yuan

发明人： Lin-Sen Yuan ,  Lu Yuan

IPC分类号： C10M173/02

CPC分类号： C10M173/02 ,  C10M2201/02 ,  C10M2201/065 ,  C10M2201/066 ,  C10M2201/084 ,  C10M2207/125 ,  C10M2207/126 ,  C10M2207/129 ,  C10M2209/104 ,  C10M2209/108 ,  C10M2211/06 ,  C10M2213/02 ,  C10M2213/062 ,  C10N2210/01 ,  C10N2240/401 ,  C10N2250/02

摘要： A non-toxic coolant/lubricant is provided which is specifically designed for use in extremely high-load, high-stress machine operations, such as broaching. The composition of this coolant/lubricant includes about 8 to 15 wt % of molybdenum disulfide (MoS.sub.2) powder; about 2 to 6.6 wt % of soap flakes; about 6 to 12 wt % of a liquid polytetrafluoroethylene suspension; and about 66.4 to 84 wt % water. The liquid polytetrafluoroethylene component, which is a water-based suspension of polytetrafluoroethylene, serves as a replacement for toxic CCl.sub.4, which has been used to increase lubricity in coolant/lubricants comprising molybdenum disulfide. The replacement of CCl.sub.4 with liquid polytetrafluoroethylene in the present composition results in a non-toxic but still highly effective coolant/lubricant.

摘要翻译： 提供无毒的冷却剂/润滑剂，专门设计用于极高负荷，高应力的机器操作，如拉削。 该冷却剂/润滑剂的组成包括约8至15重量％的二硫化钼（MoS 2）粉末; 约2至6.6重量％的皂片; 约6至12重量％的液体聚四氟乙烯悬浮液; 和约66.4-84重量％的水。 作为聚四氟乙烯的水性悬浮液的液体聚四氟乙烯组分用作用于增加包含二硫化钼的冷却剂/润滑剂的润滑性的有毒CCl4的替代物。 在本发明组合物中用液体聚四氟乙烯替代CCl4导致无毒但仍然高效的冷却剂/润滑剂。