公开(公告)号：EP1826977A2

公开(公告)日：2007-08-29

申请号：EP07250818.7

申请日：2007-02-28

Applicant: STMicroelectronics (Beijing) R&D Co. Ltd.

Inventor： Yiqun, Ge ,  Wuxian, Shi ,  Juan, Du

IPC: H04L27/26

CPC classification number: H04L27/2657 ,  H04L27/2662 ,  H04L27/2684 ,  H04L27/2691

Abstract: A method, and components for performing such method, is provided for synchronizing multiple user signals in a multi-user communication system. An interference matrix is generated based on time delay and frequency offset information for the active users accessing an OFDMA uplink receiver. User signals are received from the active users and are segmented into blocks, and the interference matrix is applied to each of the blocks. The received user signal is OFDM demodulated and unused sub-carriers are discarded. Typically, the method includes also applying a factorization matrix formed by factoring a correction matrix created from the interference matrix and an inverse matrix formed based on the factoring results to the user signal blocks, e.g., the correction step includes multiplying each of the blocks from the user signal by each of these three matrices. The corrected user blocks are then concatenated to form a corrected vector signal.

Abstract translation: 一种方法和用于执行这种方法的组件被提供用于在多用户通信系统中同步多个用户信号。 基于用于访问OFDMA上行链路接收机的活动用户的时间延迟和频率偏移信息生成干扰矩阵。 从活动用户接收用户信号，并将其分割为块，并且将干扰矩阵应用于每个块。 所接收的用户信号是OFDM解调的，并且未使用的子载波被丢弃。 通常，该方法还包括应用通过将从干扰矩阵产生的校正矩阵分解而形成的因子分解矩阵和基于因子分解结果形成的逆矩阵到用户信号块，例如，校正步骤包括将来自 用户信号通过这三个矩阵中的每一个。 然后校正的用户块被级联以形成校正的矢量信号。

公开(公告)号：EP4231122A1

公开(公告)日：2023-08-23

申请号：EP23156559.9

申请日：2023-02-14

Applicant: STMicroelectronics (Beijing) R&D Co. Ltd. ,  STMicroelectronics (Shenzhen) R&D Co., Ltd.

Inventor： CHEN, Bowei ,  DING, Yue ,  SUN, Guodong

IPC: G06F3/041

Abstract: A method for operating an electronic device includes detecting, by a touchscreen controller, a touch point on a touchscreen; determining, by the touchscreen controller, coordinates of the touch point; scaling, by the touchscreen controller, up the coordinates of the touch point to obtain scaled up coordinates by overwriting a reserved portion of a touch event protocol with additional information corresponding to the coordinates of the touch point; reporting, by the touchscreen controller, the scaled up coordinates of the touch point to an application processor; and determining, by the application processor, the coordinates of the touch point with an increased resolution by converting the scaled up coordinates into a floating point value.

公开(公告)号：EP2207089B1

公开(公告)日：2014-08-27

申请号：EP09180314.8

申请日：2009-12-22

Applicant: STMicroelectronics (Beijing) R&D Co. Ltd.

Inventor： Wang, Kai-Feng ,  Sun, Hong- Xia ,  Zhu, Peng-Fei ,  Wu, Yong-Qiang

IPC: G06F9/38

CPC classification number: G06F9/3836 ,  G06F9/3855

公开(公告)号：EP2202636A1

公开(公告)日：2010-06-30

申请号：EP09180316.3

申请日：2009-12-22

Applicant: STMicroelectronics (Beijing) R&D Co. Ltd.

Inventor： Wang, Kai-Feng ,  Sun, Hong-Xia ,  Wu, Yong- Qiang

IPC: G06F9/38 ,  G06F1/32

CPC classification number: G06F9/3844 ,  G06F1/3203 ,  G06F1/3243 ,  G06F9/3804 ,  G06F9/382 ,  Y02D10/152

Abstract: Some microprocessors check branch prediction information in a branch history table and/or a branch target buffer. To check for branch prediction information, a microprocessor can identify which instructions are control flow instructions and which instructions are non control flow instructions. To reduce power consumption in the branch history table and/or branch target buffer, the branch history table and/or branch target buffer can check for branch prediction information corresponding to the control flow Instructions and not the non control flow instructions.

Abstract translation: 一些微处理器检查分支历史表和/或分支目标缓冲器中的分支预测信息。 为了检查分支预测信息，微处理器可以识别哪些指令是控制流程指令，哪些指令是非控制流程指令。 为了降低分支历史表和/或分支目标缓冲器的功耗，分支历史表和/或分支目标缓冲器可以检查与控制流程指令相对应的分支预测信息，而不是非控制流程指令。

公开(公告)号：EP2202633A1

公开(公告)日：2010-06-30

申请号：EP09180312.2

申请日：2009-12-22

Applicant: STMicroelectronics (Beijing) R&D Co. Ltd.

Inventor： Sun, Hong- Xia ,  Wang, Kai- Feng ,  Zhu, Peng- Fei ,  Wu, Yong- Qiang

IPC: G06F9/30 ,  G06F9/38

CPC classification number: G06F9/3861 ,  G06F9/384

Abstract: A system for recovering an architecture register mapping table (ARMT). The system includes a first number of collection circuits and decode circuits, a second number of selection circuits, and an enable circuit. Information related to the mapping between each physical register and an appropriate architecture register is obtained from a physical register mapping table (PRMT) by one and only one collection circuit during only one of a fourth number of instruction cycles. Each decode circuit has its input coupled to the output of one different collection circuit and is capable of converting its input into a third number bit wide binary string selection code at its output. Each selection circuit is configured to receive from each selection code a bit from a bit position associated with that selection circuit. The enable circuit is configured to appropriately enable mapping of information from the PRMT to the ARMT.

Abstract translation: 一种用于恢复架构寄存器映射表（ARMT）的系统。 该系统包括第一数量的采集电路和解码电路，第二数量的选择电路和使能电路。 与每个物理寄存器和适当架构寄存器之间的映射相关的信息在仅第四个指令周期中的一个中仅由一个且仅一个采集电路从物理寄存器映射表（PRMT）获得。 每个解码电路的输入端耦合到一个不同的采集电路的输出端，并且能够在其输出端将其输入转换为第三个位宽的二进制串选择码。 每个选择电路被配置为从与该选择电路相关联的位位置从每个选择代码接收一位。 使能电路被配置为适当地启用从PRMT到ARMT的信息的映射。

公开(公告)号：EP1953987A2

公开(公告)日：2008-08-06

申请号：EP08150759.2

申请日：2008-01-29

Applicant: STMicroelectronics (Beijing) R&D Co. Ltd.

Inventor： Jiang, Sen

IPC: H04L27/26

CPC classification number: H04L27/2614

Abstract: An active-set PAR reduction method has low computation cost and delay. Peak canceling, by adding up the original signal and the peak canceling signal, is done only after the final peak canceling signal that can reduce all peaks of the resultant signal below the desired peak level is generated with an iterative method or a maximum iteration is reached. The PAR reduction method cancels the high computation cost for accumulating the peak-canceling effort into each sample every iteration. In the i -th iteration, the method attempts to resolve an intermediate peak canceling signal that can reduce the i peaks of the resultant signal to the desired peak level. The method only calculates the samples of the intermediate peak canceling signal and performs balance testing in some locations where the peak level of the original signal is larger than a selected threshold.

Abstract translation: 有源设置PAR减小方法具有低运算成本和延迟。 山顶取消，加入了原始信号和峰值抵消信号，仅在最后峰值消除信号确实可以减少低于所希望的峰值电平的合成信号的所有峰与在迭代方法或最大迭代产生后，达到完成 ， PAR减小方法取消用于累积峰值消除精力投入到各样品每次迭代的高计算成本。 在第i次迭代中，该方法试图解决在中间峰值消除信号并可以第i得到的信号的峰值减小到期望的峰值电平。 该方法仅计算中间峰值消除信号的采样，并且执行在某些位置在原始信号的峰值电平高于选定阈值更大的平衡测试。

公开(公告)号：EP1895734A2

公开(公告)日：2008-03-05

申请号：EP07253261.7

申请日：2007-08-17

Applicant: STMicroelectronics (Beijing) R&D Co. Ltd.

Inventor： Ge, Yiqun, c/o STMicroelectronics (Beijing) R&D Co. Ltd. ,  Zhou, Xutao, c/o STMicroelectronics (Beijing) R&D Co. Ltd. ,  Shi, Wuxian c/o STMicroelectronics (Beijing) R&D Co. Ltd.

IPC: H04L27/26

CPC classification number: H04L27/2657 ,  H04L27/2676

Abstract: A blind carrier frequency offset estimator is based on a single-OFDM-symbol training sequence in multi-user OFDMA uplink. Through multiple access interference modeling and analysis, a virtual user is employed that occupies the all null sub-carriers. By minimizing the energy leakage on the virtual user in term of tentative frequency offsets, the estimator can approach the real frequency offset. The estimator performs only on frequency-domain, simplifies interference calculations, and lowers the rank of the matrix. An iterative computation method is used to approach the real frequency offset.

Abstract translation: 盲载波频偏估计器基于多用户OFDMA上行链路中的单OFDM符号训练序列。 通过多址干扰建模和分析，采用占用全部空子载波的虚拟用户。 通过最小化虚拟用户在暂定频率偏移方面的能量泄漏，估计器可以接近实际频率偏移。 估计器仅在频域上执行，简化了干扰计算，并降低了矩阵的秩。 迭代计算方法用于逼近实际频偏。

公开(公告)号：EP2202635B1

公开(公告)日：2018-11-07

申请号：EP09180315.5

申请日：2009-12-22

Applicant: STMicroelectronics (Beijing) R&D Co. Ltd.

Inventor： Wang, Kai-Feng ,  Sun, Hong-Xia

IPC: G06F9/38

CPC classification number: G06F9/3806 ,  G06F9/3848

Abstract: A system and method for predicting the execution of a branch of computer-executable Instructions. In an embodiment, a branch predictor may include a program-counter register operable to store a program-counter value and a branch-history register operable to store a branch-history value. Additionally, the branch predictor may include a prediction hash table having a plurality of prediction values each uniquely corresponding to a plurality of memory locations. With these components, the branch predictor may generate a first prediction value that corresponds to the program-counter value and may generate a second prediction value that corresponds to a logical combination of the program-counter value and the branch-history value. With these two prediction values obtained from two different prediction schemas, the branch predictor is better suited to generate an overall prediction value based on the first and second prediction values that is more accurate than a single prediction value based upon a single prediction schema.

公开(公告)号：EP1826977B1

公开(公告)日：2011-07-27

申请号：EP07250818.7

申请日：2007-02-28

Applicant: STMicroelectronics (Beijing) R&D Co. Ltd.

Inventor： Yiqun, Ge ,  Wuxian, Shi ,  Juan, Du

IPC: H04L27/26

CPC classification number: H04L27/2657 ,  H04L27/2662 ,  H04L27/2684 ,  H04L27/2691

公开(公告)号：EP2202635A1

公开(公告)日：2010-06-30

申请号：EP09180315.5

申请日：2009-12-22

Applicant: STMicroelectronics (Beijing) R&D Co. Ltd.

Inventor： Wang, Kai-Feng ,  Sun, Hong-Xia

IPC: G06F9/38

CPC classification number: G06F9/3806 ,  G06F9/3848

Abstract: A system and method for predicting the execution of a branch of computer-executable Instructions. In an embodiment, a branch predictor may include a program-counter register operable to store a program-counter value and a branch-history register operable to store a branch-history value. Additionally, the branch predictor may include a prediction hash table having a plurality of prediction values each uniquely corresponding to a plurality of memory locations. With these components, the branch predictor may generate a first prediction value that corresponds to the program-counter value and may generate a second prediction value that corresponds to a logical combination of the program-counter value and the branch-history value. With these two prediction values obtained from two different prediction schemas, the branch predictor is better suited to generate an overall prediction value based on the first and second prediction values that is more accurate than a single prediction value based upon a single prediction schema.

Abstract translation: 一种用于预测计算机可执行指令的分支的执行的系统和方法。 在一个实施例中，分支预测器可以包括可操作来存储程序计数器值的程序计数器寄存器和可操作来存储分支历史值的分支历史寄存器。 另外，分支预测器可以包括具有多个预测值的预测哈希表，每个预测值唯一地对应于多个存储位置。 利用这些分量，分支预测器可以生成对应于程序计数器值的第一预测值并且可以生成与程序计数器值和分支历史值的逻辑组合对应的第二预测值。 利用从两个不同预测模式获得的这两个预测值，分支预测器更适合于基于比基于单个预测模式的单个预测值更精确的第一和第二预测值生成总体预测值。