公开(公告)号：US20050286496A1

公开(公告)日：2005-12-29

申请号：US10953193

申请日：2004-09-29

Applicant: Tanu Malhotra ,  Krishna Kumar

Inventor： Tanu Malhotra ,  Krishna Kumar

IPC: H04L12/66 ,  H04L29/06 ,  H04M1/253 ,  H04M7/00

CPC classification number: H04M7/006 ,  H04L29/06027 ,  H04L65/1006 ,  H04L65/1009 ,  H04L65/1043 ,  H04M1/2535

Abstract: An apparatus includes a plurality of call controllers that are capable of establishing a plurality of communication sessions over a packet network using a plurality of signaling protocols. The apparatus also includes an application controller that is capable of supporting one or more supplementary services during each of the communication sessions. As particular examples, the application controller and at least one of the call controllers are capable of at least one of: placing at least one of the communication sessions on hold so a user may initiate another of the communication sessions, placing at least one of the communication sessions on hold so the user may accept another of the communication sessions, and establishing a conference using at least two of the communication sessions. The communication sessions may use a common signaling protocol or different signaling protocols.

Abstract translation: 一种装置包括能够使用多个信令协议在分组网络上建立多个通信会话的多个呼叫控制器。 该装置还包括能够在每个通信会话期间支持一个或多个补充服务的应用控制器。 作为特定示例，应用控制器和至少一个呼叫控制器能够进行以下至少一个：将至少一个通信会话置于保持状态，以便用户可以发起另一个通信会话，将至少一个 保持通信会话，使得用户可以接受另一个通信会话，并且使用至少两个通信会话来建立会议。 通信会话可以使用公共信令协议或不同的信令协议。

公开(公告)号：US20050273326A1

公开(公告)日：2005-12-08

申请号：US10955904

申请日：2004-09-30

Applicant: Kabi Padhi ,  Sapna George

Inventor： Kabi Padhi ,  Sapna George

IPC: G10L15/02 ,  G10L15/08

CPC classification number: G10L15/02

Abstract: An energy-based pattern recognition algorithm receives the input frames of an audio signal and a test frame sequence and returns a best match in the audio signal to the given test frame sequence. The energy of each input frame is computed, and input frames for which the energy is within a predetermined degree of closeness to the local maximum energy within the test frame sequence are identified as probable matches. Probable matches are then eliminated if the respective probable match does not correspond to a local maximum within a respective neighborhood of adjacent frames. The difference between overall energy for frames neighboring the remaining probable matches and the test frame sequence is computed as a percentage, with the minimum percent deviation in energy from the test frame sequence being returned as the best pattern match. Local signal characteristic matching may be employed to refine matching.

Abstract translation: 基于能量的模式识别算法接收音频信号和测试帧序列的输入帧，并将音频信号中的最佳匹配返回给给定的测试帧序列。 计算每个输入帧的能量，并且将能量在与测试帧序列内的局部最大能量接近的预定程度内的输入帧识别为可能的匹配。 如果相应的可能匹配不对应于相邻帧的相应邻域内的局部最大值，则可以消除可能的匹配。 计算与剩余可能匹配相邻的帧的总体能量与测试帧序列之间的差异作为百分比计算，随着最佳模式匹配，返回测试帧序列的能量的最小百分比偏差。 可以采用本地信号特征匹配来优化匹配。

公开(公告)号：US20050182620A1

公开(公告)日：2005-08-18

申请号：US10951545

申请日：2004-09-28

Applicant: Prakash Kabi ,  Sapna George

Inventor： Prakash Kabi ,  Sapna George

IPC: G10L25/78 ,  G10L19/00

CPC classification number: G10L25/78

Abstract: A system and method is provided for determining whether a data frame of a coded speech signal corresponds to voice or to noise. In one embodiment, a voice activity detector determines a cross-correlation of data. If the cross-correlation is lower than a predetermined cross-correlation value, then the data frame corresponds to noise. If not, then the voice activity detector determines a periodicity of the cross-correlation and a variance of the periodicity. If the variance is less than a predetermined variance value, then the data frame corresponds to voice. In another embodiment, a method determines energy of the data frame and an average energy of the coded speech signal. If the data frame is one of a predetermined number of initial data frames, then a comparison between the average energy to the energy of the data frame is used to determine whether the data frame is noise or voice.

Abstract translation: 提供了一种用于确定编码语音信号的数据帧是否对应于语音或噪声的系统和方法。 在一个实施例中，语音活动检测器确定数据的互相关。 如果互相关低于预定的互相关值，则数据帧对应于噪声。 如果不是，则语音活动检测器确定互相关的周期性和周期性的方差。 如果方差小于预定方差值，则数据帧对应于语音。 在另一个实施例中，一种方法确定数据帧的能量和编码语音信号的平均能量。 如果数据帧是预定数量的初始数据帧之一，则使用平均能量与数据帧的能量之间的比较来确定数据帧是噪声还是语音。

公开(公告)号：US20050094580A1

公开(公告)日：2005-05-05

申请号：US10701350

申请日：2003-11-04

Applicant: Krishna Kumar ,  Teck Teo ,  Tze Wong ,  Tanu Malhotra

Inventor： Krishna Kumar ,  Teck Teo ,  Tze Wong ,  Tanu Malhotra

IPC: H04L12/18 ,  H04L29/06 ,  H04L12/16

CPC classification number: H04L65/4038 ,  H04L12/1827 ,  H04L29/06027 ,  H04L65/4046

Abstract: A system and method is disclosed for implementing a multipoint control unit in an endpoint that is participating in and managing a multipoint audio conference in a packet network. The multipoint control unit establishes audio communications between a plurality of endpoints of the packet network, mixes audio communications from the plurality of endpoints, and provides echo cancellation for the endpoint that is managing the multipoint audio conference.

Abstract translation: 公开了一种用于在分组网络中参与和管理多点音频会议的端点中实现多点控制单元的系统和方法。 多点控制单元在分组网络的多个端点之间建立音频通信，混合来自多个端点的音频通信，并且为管理多点音频会议的端点提供回波消除。

公开(公告)号：US06876702B1

公开(公告)日：2005-04-05

申请号：US09807497

申请日：1998-10-13

Applicant: Yau Wai Lucas Hui ,  Hong Lye Oh ,  Jean-Michel Bard

Inventor： Yau Wai Lucas Hui ,  Hong Lye Oh ,  Jean-Michel Bard

IPC: H04N7/26 ,  H04N7/12

CPC classification number: H04N19/51

Abstract: A method and apparatus of encoding digital video, for example according to the ISO/IEC MPEG standards (ISO/IEC 11172-2 MPEG-1 and ISO/IEC 13818-2 MPEG-2), which employs a local motion estimator for determining respective local motion vectors for groups of adjacent macroblocks in a picture. A local motion vector is determined for each row of macroblocks in a picture from the motion vectors of the macroblocks in that row. Then, for macroblocks in the corresponding row of a subsequently coded picture, the local motion vector can be used to select the search window used for determining the motion vectors. The local motion estimator improves search range and accuracy of macroblock motion vector detection without increasing the search window accessing bandwidth and caching requirement, and computation lode of searching.

Abstract translation: 根据ISO / IEC MPEG标准（ISO / IEC 11172-2 MPEG-1和ISO / IEC 13818-2 MPEG-2）对数字视频进行编码的方法和装置，其采用局部运动估计器来确定各自的 用于图片中的相邻宏块组的局部运动矢量。 根据该行中的宏块的运动矢量来确定图像中的每一行宏块的局部运动矢量。 然后，对于随后编码图像的相应行中的宏块，可以使用局部运动矢量来选择用于确定运动矢量的搜索窗口。 局部运动估计器提高了宏块运动矢量检测的搜索范围和精度，而不增加搜索窗口访问带宽和缓存要求，以及搜索的计算量。

公开(公告)号：US20050031201A1

公开(公告)日：2005-02-10

申请号：US10878981

申请日：2004-06-28

Applicant: Kwong Goh

Inventor： Kwong Goh

IPC: G06T5/00 ,  G06T5/40 ,  G06K9/00 ,  G06K9/40 ,  H04N5/14

CPC classification number: G06T5/009 ,  G06T5/40 ,  G06T2207/10016

Abstract: A method for enhancing the contrast of video pictures that includes the steps of receiving an input video signal; extracting a picture from said input video signal; determining an active window for said picture; calculating a histogram for luminance values of pixels in said active window of said picture; determining characteristics of said histogram; selecting one suitable mapping function from a plurality of mapping functions based on the determined characteristics of said histogram; and mapping the luminance value of each pixel in said picture in accordance with said selected mapping function.

Abstract translation: 一种用于增强视频图像的对比度的方法，包括接收输入视频信号的步骤; 从所述输入视频信号中提取图像; 确定所述图片的活动窗口; 计算所述图像的所述活动窗口中的像素的亮度值的直方图; 确定所述直方图的特性; 基于所确定的所述直方图的特性，从多个映射函数中选择一个合适的映射函数; 以及根据所述选择的映射函数映射所述图像中的每个像素的亮度值。

公开(公告)号：US20050007497A1

公开(公告)日：2005-01-13

申请号：US10847205

申请日：2004-05-17

Applicant: Yong Huang ,  Patricia Chiang ,  Lucas Hui ,  Kwong Goh

Inventor： Yong Huang ,  Patricia Chiang ,  Lucas Hui ,  Kwong Goh

IPC: H04N5/52 ,  H04N9/64 ,  H04N9/68 ,  H04N9/77

CPC classification number: H04N9/68 ,  H04N9/77

Abstract: A method of colour saturation compensation in a video signal is disclosed. The method includes the steps of: processing a luminance signal component of the video signal; determining whether the processing of the luminance signal results in a change in chrominance saturation; if the step of determining reveals that the chrominance saturation has changed, applying a chrominance compensation signal to the chrominance signals to counteract the effects of chrominance saturation, wherein said step of applying a compensation signal include the steps of: generating a compensation signal which is dependent on hue and luminance ratio (output luminance signal/input luminance signal). Apparatus for performing the method is also disclosed.

Abstract translation: 公开了一种视频信号中色彩饱和补偿的方法。 该方法包括以下步骤：处理视频信号的亮度信号分量; 确定亮度信号的处理是否导致色度饱和度的变化; 如果确定步骤显示色度饱和度已经改变，则将色度补偿信号施加到色度信号以抵消色度饱和的影响，其中所述施加补偿信号的步骤包括以下步骤：产生依赖的补偿信号 色相和亮度比（输出亮度信号/输入亮度信号）。 还公开了用于执行该方法的装置。

公开(公告)号：US20040199849A1

公开(公告)日：2004-10-07

申请号：US10729828

申请日：2003-12-04

Applicant: STMicroelectronics Asia Pacific Pte. Ltd. ,  National University of Singapore

Inventor： Christopher Aldridge ,  Mridula Pradhan ,  Chong Yee Lee

IPC: H03M013/00

CPC classification number: H03M13/235 ,  H03M13/09 ,  H03M13/2903 ,  H03M13/2957

Abstract: A method of calculating a Cyclic Redundancy Check (CRC) value for a multi-bit input data word, using a defined generator polynomial is disclosed. The method includes the steps of: serially shifting at least a portion of the input data word into a register; XORing the contents of the register with the generator polynomial if the LSB of the register is null1null; shifting the contents of the register right by one position; shifting into the MSB position of the register a new bit of the input data word, having been XORed with the LSB of the register; repeating the previous step for all message data bits; shifting into the register a number of null0nulls equal to the length of the generator polynomial; reading from the register the calculated CRC value. Apparatus for performing the method is also disclosed.

Abstract translation: 公开了一种使用定义的生成多项式来计算多位输入数据字的循环冗余校验（CRC）值的方法。 该方法包括以下步骤：将输入数据字的至少一部分串行地移位到寄存器中; 如果寄存器的LSB为“1”，则使用生成多项式对寄存器的内容进行异或; 将登记册的内容移位一个位置; 将寄存器的MSB位移入输入数据字的新位，与寄存器的LSB进行异或运算; 对所有消息数据位重复上一步骤; 向寄存器中移动数个“0”等于生成多项式的长度; 从寄存器读取计算出的CRC值。 还公开了用于执行该方法的装置。

公开(公告)号：US20040159927A1

公开(公告)日：2004-08-19

申请号：US10712981

申请日：2003-11-13

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Kum-Weng Loo ,  Chek-Lim Kho

IPC: H01L023/02

CPC classification number: B81C1/00269 ,  G01L19/143 ,  H01L23/04 ,  H01L23/3135 ,  H01L23/473 ,  H01L24/97 ,  H01L2224/83101 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01024 ,  H01L2924/01027 ,  H01L2924/01029 ,  H01L2924/01077 ,  H01L2924/01078 ,  H01L2924/01079 ,  H01L2924/15787 ,  H01L2924/181 ,  H01L2924/00

Abstract: A semiconductor package having a substrate; a semiconductor die attached to the substrate; a housing attached to the substrate and arranged to surround the semiconductor die; and solidified molding material arranged around the housing and adhering to the substrate to secure the housing in position on the substrate. A method of manufacturing the package is also disclosed.

Abstract translation: 一种具有衬底的半导体封装; 附着在基板上的半导体管芯; 壳体，其附接到所述基板并且布置成围绕所述半导体管芯; 以及固化的模制材料，其布置在壳体周围并且附着到基板上以将壳体固定在基板上的适当位置。 还公开了制造封装的方法。

公开(公告)号：US12255595B2

公开(公告)日：2025-03-18

申请号：US17371368

申请日：2021-07-09

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics Asia Pacific Pte Ltd.

Inventor： Marco Sautto ,  Giona Fucili ,  Valerio Lo Muzzo ,  Kaufik Linggajaya

IPC: H01L41/02 ,  H03H11/04 ,  H10N30/30

Abstract: In accordance with an embodiment, a method of operating a piezoelectric transducer configured to transduce mechanical vibrations into transduced electrical signals at a pair of sensor electrodes includes stimulating a resonant oscillation of the piezoelectric transducer by applying at least one pulse electrical stimulation signal to the pair of sensor electrodes; detecting, at the pair of sensor electrodes, at least one electrical signal resulting from the stimulated resonant oscillation, wherein the at least one electrical signal resulting from the stimulated resonant oscillation oscillates at a resonance frequency of the piezoelectric transducer; measuring a frequency of oscillation of the at least one electrical signal resulting from the stimulated resonant oscillation to obtain a measured resonance frequency of the piezoelectric transducer; and tuning a stopband frequency of a notch filter coupled to the piezoelectric transducer to match the measured resonance frequency of the piezoelectric transducer.