公开(公告)号：US20150036238A1

公开(公告)日：2015-02-05

申请号：US13956484

申请日：2013-08-01

Applicant: STMicroelectronics Asia Pacific Pte. Ltd.

Inventor： Lorenzo Ferrario ,  Kaufik Linggajaya

IPC: G11B5/54

CPC classification number: G11B5/022

Abstract: The back EMF (BEMF) of a motor is sensed and compared to a target back EMF (BEMF) to generate an error control signal. The circuit supply voltage is also sensed. A PWM motor control signal is generated in response to a comparison of the error control signal to a ramp signal having a variable slope. The variable slope is selected in response to the sensed circuit supply voltage. The motor is then driven in response to the PWM control signal. The sign of the error control signal is used to selectively short one of motor terminals to a reference voltage supply node while the other motor terminal is driven in response to the PWM control signal.

Abstract translation: 电动机的反电动势（BEMF）被感测并与目标反电动势（BEMF）进行比较以产生误差控制信号。 还检测电路电源电压。 响应于误差控制信号与具有可变斜率的斜坡信号的比较，产生PWM电动机控制信号。 响应于检测到的电路电源电压选择可变斜率。 然后根据PWM控制信号驱动电机。 误差控制信号的符号用于选择性地将一个电动机端子短路到参考电压供应节点，同时响应于PWM控制信号驱动另一个电动机端子。

公开(公告)号：US08928609B2

公开(公告)日：2015-01-06

申请号：US13544713

申请日：2012-07-09

Applicant: Francesco Italia ,  Giuseppe Noviello ,  Chee Yu Ng ,  Benedetto Vigna

Inventor： Francesco Italia ,  Giuseppe Noviello ,  Chee Yu Ng ,  Benedetto Vigna

IPC: G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: A touch sensitive display includes a capacitive touch sensor configured to output capacitance values. A motion sensor makes a motion detection and generates a motion signal including a motion value indicative of sensed motion detection. A touch detection circuit is coupled to receive the capacitance values and motion values. The touch detection circuit processes the capacitance values to make a hovering detection and a touching detection with respect to the display. The touch detection circuit further generates an output signal including the motion value correlated in time with each of the hovering detection and touching detection. The output signal may be processed as a user interface control signal. The output signal may also be processed to determine an impulsive strength of the touching detection as a function of an elapsed time between hover and touch and the measured motion values.

Abstract translation: 触敏显示器包括被配置为输出电容值的电容式触摸传感器。 运动传感器进行运动检测并产生运动信号，该运动信号包括指示检测到的运动检测的运动值。 耦合触摸检测电路以接收电容值和运动值。 触摸检测电路处理电容值以对显示进行悬停检测和触摸检测。 触摸检测电路进一步生成包括与悬停检测和触摸检测中的每一个相关的运动值的输出信号。 可以将输出信号作为用户界面控制信号进行处理。 还可以处理输出信号以确定触摸检测的脉冲强度作为在悬停和触摸之间经过的时间以及所测量的运动值的函数。

公开(公告)号：US08903730B2

公开(公告)日：2014-12-02

申请号：US12897635

申请日：2010-10-04

Applicant: Wenbo Zong ,  Yuan Wu ,  Sapna George

Inventor： Wenbo Zong ,  Yuan Wu ,  Sapna George

IPC: G10L21/04

CPC classification number: G10L21/04

Abstract: A time-domain system and method of modifying the time scale of digital audio signals includes a pre-processor. The pre-processor forms a synthesized signal for processing with minimum computation and that has optional features to give preference to certain audio channels and/or frequency bands, a mechanism of adaptively characterizing the temporal features of the synthesized signal by its normalized power and zero-crossing count, and a mechanism of identifying a segment of the synthesized signal where the time scale can be modified without introducing artifacts or losing content.

Abstract translation: 修改数字音频信号的时间尺度的时域系统和方法包括预处理器。 预处理器通过最小的计算形成用于处理的合成信号，并且具有可选特征以优先于某些音频信道和/或频带，这是通过其归一化功率和零归一化功率自适应地表征合成信号的时间特征的机制， 交叉计数，以及识别可以在不引入伪像或丢失内容的情况下修改时间标度的合成信号的段的机制。

公开(公告)号：US20140294307A1

公开(公告)日：2014-10-02

申请号：US13851807

申请日：2013-03-27

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE, LTD.

Inventor： Yong HUANG ,  Lucas HUI

IPC: G06K9/46

CPC classification number: G06T7/602 ,  G06T7/62 ,  G06T2207/10016 ,  G06T2207/20052 ,  G06T2207/20056 ,  H04N5/2628 ,  H04N7/0122 ,  H04N21/234372

Abstract: A system for determining an aspect ratio of image content based on an analysis of the content. In an embodiment, an analyzer is configured to receive a data input corresponding to an image in a stream of images that constitute a video sequence of images. The analyzer is further configured to determine a mathematical representation of the image content based on a power spectrum analysis of vertical components of the image in comparison to a power spectrum analysis of horizontal components of the image. Based on this comparison of the vertical frequency components to the horizontal frequency components, a determination about the original aspect ratio of the image may be determined. This determination may be used by a video processor to correctly apply aspect ratio conversion for final image output.

Abstract translation: 一种用于基于内容的分析来确定图像内容的宽高比的系统。 在一个实施例中，分析器被配置为接收对应于构成图像的视频序列的图像流中的图像的数据输入。 分析器还被配置为与图像的水平分量的功率谱分析相比，基于图像的垂直分量的功率谱分析来确定图像内容的数学表示。 基于垂直频率分量与水平频率分量的比较，可以确定关于图像的原始纵横比的确定。 视频处理器可以使用该确定来正确应用最终图像输出的宽高比转换。

公开(公告)号：US20140292705A1

公开(公告)日：2014-10-02

申请号：US13853887

申请日：2013-03-29

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE. LTD.

Inventor： Sze-Kwang Tan ,  Yannick Guedon

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0418

Abstract: Apparatus and methods to measure capacitance changes for a touch-sensitive capacitive matrix are described. Charge-removal circuits and measurement techniques may be employed to cancel deleterious effects of parasitic capacitances in the touch-sensitive capacitive matrix. Capacitively switching a supply during timed charge removal may be used to cancel unwanted effects due to clock jitter. The apparatus and methods can improve signal-to-noise characteristics, sensitivity, and/or dynamic range for capacitive measurements relating to touch-sensitive capacitive devices.

Abstract translation: 描述了用于测量触敏电容矩阵的电容变化的装置和方法。 可以采用电荷去除电路和测量技术来消除触敏电容矩阵中寄生电容的有害影响。 在定时充电移除期间电容切换电源可用于消除由于时钟抖动引起的不必要的影响。 该装置和方法可以提高与触敏电容器件相关的电容测量的信噪比特性，灵敏度和/或动态范围。

公开(公告)号：US20140247517A1

公开(公告)日：2014-09-04

申请号：US13781908

申请日：2013-03-01

Applicant: STMICROELECTRONICS S.R.I. ,  STMICROELECTRONICS ASIA PACIFIC PTE. LTD.

Inventor： Frederic Bonvin ,  Davide Betta ,  Seng-Chean Hong

IPC: G11B33/12

CPC classification number: G11B19/047 ,  G06F1/30 ,  G11B19/2072 ,  G11B19/2081

Abstract: Applicant has recognized and appreciated the desirability of powering an actuator using power drawn from one or both of an energy storage device and a spindle motor. In some embodiments, following a loss of external power to a hard disk drive, the hard disk drive (or one or more components thereof) determines whether to provide the actuator with power drawn from the spindle motor or to provide the actuator with power drawn from the spindle motor and from the energy storage device. In some embodiments, the hard disk drive (or the component(s) thereof) may additionally or alternatively determine whether to charge the energy storage device using power drawn from the spindle motor. In some embodiments, the drive may make the determinations based on an amount of power that the actuator is to consume at a time and an amount of power that the spindle motor can provide at the time.

Abstract translation: 申请人已经认识到并且认识到使用从能量存储装置和主轴电动机中的一个或两个引出的功率来驱动致动器的可取性。 在一些实施例中，在硬盘驱动器的外部电力损失之后，硬盘驱动器（或其一个或多个部件）确定是否向主动器提供从主轴电动机提取的功率，或向致动器提供从 主轴电机和储能装置。 在一些实施例中，硬盘驱动器（或其组件）可另外或替代地确定是否使用从主轴电动机抽取的功率对能量存储装置进行充电。 在一些实施例中，驱动器可以基于执行器一次消耗的功率量和主轴电机在此时可提供的功率量来进行确定。

公开(公告)号：US20140195232A1

公开(公告)日：2014-07-10

申请号：US13854134

申请日：2013-04-01

Applicant: STMicroelectronics Asia Pacific Pte Ltd.

Inventor： Evelyn Kurniawati ,  Sapna George

IPC: G10L17/04

CPC classification number: G10L17/04 ,  G10L15/063 ,  G10L15/144 ,  G10L17/02 ,  G10L17/06

Abstract: Embodiments provide a method and system of text independent speaker recognition with a complexity comparable to a text dependent version. The scheme exploits the fact that speech is a quasi-stationary signal and simplifies the recognition process based on this theory. The modeling allows the speaker profile to be updated progressively with the new speech sample that is acquired during usage time.

Abstract translation: 实施例提供了具有与文本相关版本相当的复杂性的文本独立说话人识别的方法和系统。 该方案利用了语音是准稳态信号，并简化了基于该理论的识别过程。 该建模允许使用在使用时间期间获取的新的语音样本来逐渐更新扬声器简档。

公开(公告)号：US20140140423A1

公开(公告)日：2014-05-22

申请号：US14170111

申请日：2014-01-31

Applicant: STMICROELECTRONICS, INC. ,  STMICROELECTRONICS ASIA PACIFIC PTE LTD.

Inventor： Karthik MURALIDHAR ,  George A. VLANTIS

IPC: H04L25/03 ,  H04B7/04

CPC classification number: H04L25/03821 ,  H04B7/0413 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0226 ,  H04L27/2601

Abstract: In an embodiment, a transmitter includes a transmission path configurable to generate first pilot clusters in response to a matrix, each first pilot cluster including a respective first pilot subsymbol in a first cluster position and a respective second pilot subsymbol in a second cluster position such that a vector formed by the first pilot subsymbols is orthogonal to a vector formed by the second pilot subsymbols, the matrix having a dimension related to a number of cluster positions in each of the first pilot clusters. For example, where such a transmitter transmits simultaneous orthogonal-frequency-division-multiplexed (OFDM) signals (e.g., MIMO-OFDM signals) over respective channels that may impart inter-carrier interference (ICI) to the signals due to Doppler spread, the pattern of the pilot symbols that compose the pilot clusters may allow a receiver of these signals to estimate the responses of these channels more accurately than conventional receivers.

Abstract translation: 在实施例中，发射机包括可配置为响应于矩阵生成第一导频簇的传输路径，每个第一导频簇包括第一簇位置中的相应第一导频子符号和第二簇位置中的相应第二导频子符号，使得 由第一导频子符号形成的矢量与由第二导频子符号形成的矢量正交，该矩阵具有与每个第一导频簇中的簇的位置数相关的维数。 例如，在这种发射机通过可能由于多普勒扩展而给予信号的载波间干扰（ICI）的相应信道上发射同时正交频分复用（OFDM）信号（例如，MIMO-OFDM信号）的情况下， 构成导频簇的导频符号的模式可以允许这些信号的接收机比常规接收机更准确地估计这些信道的响应。

公开(公告)号：US08731323B2

公开(公告)日：2014-05-20

申请号：US13304118

申请日：2011-11-23

Applicant: Haiyun Wang ,  Lucas Hui

Inventor： Haiyun Wang ,  Lucas Hui

IPC: G06K9/40

CPC classification number: H04N5/21 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20021 ,  G06T2207/20192 ,  H04N5/142 ,  H04N19/86

Abstract: A method and apparatus are disclosed for identifying and removing banding artifacts (i.e., false contours) resulting from insufficient bit depth caused by digital image quantization, conversion, and/or compression. This method includes: explicitly identifying texture block and flat block; de-termination of filter window sizes with the consideration of handling transitions between texture block and flat block; de-banding filtering with edge protection; and noise shaping according to de-banding filter result.

Abstract translation: 公开了一种用于识别和去除由数字图像量化，转换和/或压缩引起的比特深度不足导致的带状伪影（即假轮廓）的方法和装置。 该方法包括：明确识别纹理块和平块; 考虑处理纹理块和平块之间的过渡的过滤器窗口尺寸的解除终止; 边缘保护去带滤波; 并根据去带滤波器的结果进行噪声整形。

公开(公告)号：US20140092050A1

公开(公告)日：2014-04-03

申请号：US13629877

申请日：2012-09-28

Applicant: Sze-Kwang Tan ,  Yannick Guedon ,  Dianbo Guo

Inventor： Sze-Kwang Tan ,  Yannick Guedon ,  Dianbo Guo

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0414 ,  G06F3/0416 ,  G06F2203/04103 ,  G06F2203/04108

Abstract: A readout device for a capacitive sense matrix includes a computer readable storage medium configured to store capacitance data. The capacitance data represents capacitance values of the capacitive sense matrix. The readout device also includes a readout circuit configured to receive a signal from the capacitive sense matrix, the readout circuit being configured based upon the capacitance data. Also described are a readout method and a method of compensating for variations in capacitance.

Abstract translation: 用于电容性感测矩阵的读出装置包括被配置为存储电容数据的计算机可读存储介质。 电容数据表示电容性感测矩阵的电容值。 读出装置还包括被配置为从电容性感测矩阵接收信号的读出电路，读出电路基于电容数据配置。 还描述了补偿电容变化的读出方法和方法。