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    VOICE SWITCHING FOR VOICE COMMUNICATION ON COMPUTERS
    33.
    发明申请
    VOICE SWITCHING FOR VOICE COMMUNICATION ON COMPUTERS 有权
    电脑语音通话语音切换

    公开(公告)号：US20090207763A1

    公开(公告)日：2009-08-20

    申请号：US12032589

    申请日：2008-02-15

    Applicant: Qin Li ,  Chao He

    Inventor： Qin Li ,  Chao He

    IPC: H04B3/20

    CPC classification number: H04M9/082

    Abstract: A voice communication end device performs quality checks to determine whether acoustic echo cancellation would be ineffective, such as due to noise or clock drift or discontinuities between incoming and outgoing voice channels. In the case where echo cancellation would prove ineffective, the device falls back on a tri-state voice switching operation that includes a bi-direction state in which both channels are on in full duplex operation, which provides a smoother transition switching between active channels. The tri-state voice switching supports both voluntary transitions where the active user voluntarily stops to yield the active channel, and forced transitions where the active user is forcedly interrupted by the other user speaking more loudly.

    Abstract translation: 语音通信终端设备执行质量检查以确定声学回声消除是否无效，例如由于噪声或时钟漂移或入站和出局语音信道之间的不连续性。 在回声消除无效的情况下，设备退回到三态语音切换操作，该三态语音切换操作包括双向状态，其中两个信道都是全双工操作，这在主动信道之间提供更平滑的转换切换。 三态语音切换支持主动用户自愿停止以产生活动信道的自愿转换，以及强制转换，其中主动用户被其他用户强烈地更大声地中断。

    Ultrahard multilayer coating comprising nanocrystalline diamond and nanocrystalline cubic boron nitride
    34.
    发明申请
    Ultrahard multilayer coating comprising nanocrystalline diamond and nanocrystalline cubic boron nitride 有权
    包括纳米晶体金刚石和纳米晶体立方氮化硼的Ultrahard多层涂层

    公开(公告)号：US20090022969A1

    公开(公告)日：2009-01-22

    申请号：US11880115

    申请日：2007-07-19

    Applicant: Wenjun Zhang ,  Shuit-Tong Lee ,  Igor Bello ,  Kar Man Leung ,  He-qin Li ,  You-Shen Zou ,  Yat Ming Chong ,  Kwok Leung Ma

    Inventor： Wenjun Zhang ,  Shuit-Tong Lee ,  Igor Bello ,  Kar Man Leung ,  He-qin Li ,  You-Shen Zou ,  Yat Ming Chong ,  Kwok Leung Ma

    IPC: B32B7/02

    CPC classification number: C23C16/279 ,  C23C14/0647 ,  C23C16/274 ,  C23C28/044 ,  C23C28/048 ,  C23C28/42 ,  C23C30/005 ,  Y10T428/24975 ,  Y10T428/265 ,  Y10T428/30

    Abstract: A multilayer coating (MLC) is composed of two chemically different layered nanocrystalline materials, nanodiamond (nanoD) and nano-cubic boron nitride (nono-cBN). The structure of the MLC and fabrication sequence of layered structure are disclosed. The base layer is preferably nanoD and is the first deposited layer serving as an accommodation layer on a pretreated substrate. It can be designed with a larger thickness whereas subsequent alternate nano-cBN and nanoD layers are typically prepared with a thickness of 2 to 100 nm. The thickness of these layers can be engineered for a specific use. The deposition of the nanoD layer, by either cold or thermal plasma CVD, is preceded by diamond nucleation on a pretreated and/or precoated substrate, which has the capacity to accommodate the MLC and provides excellent adhesion. Nano-cBN layers are directly grown on nanodiamond crystallites using ion-assisted physical vapor deposition (PVD) and ion-assisted plasma enhanced chemical vapor deposition (PECVD), again followed by nanodiamond deposition using CVD methods in cycles until the intended number of layers of the MLC is obtained.

    Abstract translation: 多层涂层（MLC）由两种化学不同的层状纳米晶体材料纳米金刚石（nanoD）和纳米立方氮化硼（non-cBN）组成。 公开了MLC的结构和分层结构的制造顺序。 基层优选为纳米D，并且是作为预处理基底上的收容层的第一沉积层。 它可以被设计成具有较大的厚度，而后续的交替的纳米cBN和nanoD层通常以2至100nm的厚度制备。 这些层的厚度可以被设计用于特定用途。 通过冷或热等离子体CVD沉积纳米D层之前，在预处理和/或预涂底物上进行金刚石成核，其具有容纳MLC的能力并提供优异的附着力。 使用离子辅助物理气相沉积（PVD）和离子辅助等离子体增强化学气相沉积（PECVD）在纳米金刚石微晶上直接生长纳米cBN层，然后再循环使用CVD法进行纳米金刚石沉积，直到预期数量的层 获得MLC。

    Method and apparatus for reducing timestamp noise in audio echo cancellation
    35.
    发明申请
    Method and apparatus for reducing timestamp noise in audio echo cancellation 有权
    用于减少音频回声消除中的时间戳噪声的方法和装置

    公开(公告)号：US20080259828A1

    公开(公告)日：2008-10-23

    申请号：US11788939

    申请日：2007-04-23

    Applicant: Chao He ,  Qin Li ,  Wei-ge Chen

    Inventor： Chao He ,  Qin Li ,  Wei-ge Chen

    IPC: H04B15/00

    CPC classification number: H04M9/082

    Abstract: A communication end device of a two-way communication system is shown. The device includes an audio signal capture device for capturing local audio to be transmitted to another end device, an audio signal rendering device for playing remote audio received from the other end device, and buffers for buffering the captured and rendered audio signals. The device also includes an audio echo canceller operating to predict echo from the rendered audio signal at a calculated relative offset in the captured audio signal based on an adaptive filter, and subtract the predicted echo from the signal transmitted to the other end device The calculated relative offset that is used by the audio echo canceller for a current signal sample is adjusted if a difference between it and an adjusted relative offset of a preceding sample exceeds a threshold value.

    Abstract translation: 示出了双向通信系统的通信终端设备。 该装置包括用于捕获要发送到另一终端设备的本地音频的音频信号捕获设备，用于播放从另一端设备接收的远程音频的音频信号渲染设备，以及用于缓冲所捕获和渲染的音频信号的缓冲器。 该装置还包括音频回波消除器，其操作以基于自适应滤波器在所捕获的音频信号中以计算的相对偏移来预测来自渲染音频信号的回波，并且从发送到另一端装置的信号中减去预测回波。计算的相对 当音频回波消除器用于当前信号样本的偏移量如果其与先前样本的经调整的相对偏移之间的差异超过阈值则被调整。

    Filter bank optimization for acoustic echo cancellation
    36.
    发明申请
    Filter bank optimization for acoustic echo cancellation 有权
    用于声学回声消除的滤波器组优化

    公开(公告)号：US20080253553A1

    公开(公告)日：2008-10-16

    申请号：US11784893

    申请日：2007-04-10

    Applicant: Qin Li ,  Wei-ge Chen ,  Chao He

    Inventor： Qin Li ,  Wei-ge Chen ,  Chao He

    IPC: H04M9/08

    CPC classification number: H04M9/082

    Abstract: A communications device is presented for providing bi-directional audio communications between a near-end user and a far-end user via a bidirectional communications channel. The communications device includes an adaptive echo canceller receiving a near-end audio signal and a far-end audio signal and providing an echo-canceled near-end audio signal for transmission to the far-end user via the communications channel. The adaptive echo canceller includes a first bank of analysis filters for filtering the near-end audio signal, a second bank of analysis filters for filtering the far-end audio signal, and a bank of synthesis filters for filtering sub-band echo-canceled signals generated within the adaptive echo canceller. The first and second filter banks have a frequency response optimized to reduce echo residual gain.

    Abstract translation: 呈现通信设备，用于经由双向通信信道在近端用户和远端用户之间提供双向音频通信。 通信设备包括接收近端音频信号和远端音频信号的自适应回波消除器，并提供回波消除的近端音频信号，以经由通信信道传输给远端用户。 自适应回波消除器包括用于滤波近端音频信号的第一组分析滤波器，用于滤波远端音频信号的第二组分析滤波器，以及用于滤波子带回波消除信号的一组合成滤波器 在自适应回波消除器内产生。 第一和第二滤波器组具有优化的频率响应以减少回波残余增益。

    Method and device for anonymous entity identification
    39.
    发明授权
    Method and device for anonymous entity identification 有权
    用于匿名实体识别的方法和设备

    公开(公告)号：US09225728B2

    公开(公告)日：2015-12-29

    申请号：US13884749

    申请日：2011-06-24

    Applicant: Zhiqiang Du ,  Manxia Tie ,  Xiaolong Lai ,  Qin Li

    Inventor： Zhiqiang Du ,  Manxia Tie ,  Xiaolong Lai ,  Qin Li

    IPC: H04L29/06 ,  H04L9/32

    CPC classification number: H04L63/12 ,  H04L9/3255 ,  H04L63/0407 ,  H04L63/08 ,  H04L63/0853

    Abstract: The present invention discloses a method for anonymous entity identification, which comprises the following steps: an entity A transmits an RA and an IGA to an entity B; the entity B returns an RB, an IGB and a TokenBA to the entity A; the entity A sends an RA′, the RB, the IGA and the IGB to a credible third-party TP; the credible third-party TP checks the validity of a first group and a second group according to the IGA and the IGB; the credible third-party TP returns an RESGA, an RESGB, and a TokenTA to the entity A, or returns the RESGA, the RESGA, a TokenTA1 and a TokenTA2 to the entity A; and the entity A performs a verification after receiving them; the entity A sends a TokenAB to the entity B; and the entity B performs the verification after receiving it. In the present invention, there is no need to send the identity information of the entity to be identified to an opposite terminal, so that anonymous identity identification is realized.

    Abstract translation: 本发明公开了一种匿名实体识别方法，包括以下步骤：实体A向实体B发送RA和IGA; 实体B向实体A返回RB，IGB和TokenBA; 实体A将RA'，RB，IGA和IGB发送到可信的第三方TP; 可靠的第三方TP根据IGA和IGB检查第一组和第二组的有效性; 可信第三方TP向实体A返回RESGA，RESGB和TokenTA，或将RESGA，RESGA，TokenTA1和TokenTA2返回给实体A; 实体A在接收到验证后进行验证; 实体A向实体B发送TokenAB; 并且实体B在接收到该验证之后执行验证。 在本发明中，不需要将要识别的实体的身份信息发送到对方终端，从而实现匿名身份识别。

    Switch route exploring method, system and device
    40.
    发明授权
    Switch route exploring method, system and device 有权
    切换路线探索方法，系统和设备

    公开(公告)号：US09137259B2

    公开(公告)日：2015-09-15

    申请号：US13702785

    申请日：2011-01-14

    Applicant: Qin Li ,  Jun Cao ,  Manxia Tie ,  Zhenhai Huang

    Inventor： Qin Li ,  Jun Cao ,  Manxia Tie ,  Zhenhai Huang

    IPC: H04L29/06 ,  H04L12/721

    CPC classification number: H04L63/1475 ,  H04L45/26

    Abstract: A switch route exploring method, system and device are provided in the present invention. The method comprises that: a transmitting source node NSource constructs a switch route exploring request packet and transmits it to a destination node NDestination; the switch route exploring request packet comprises information of switch route from the transmitting source node NSource to the destination node NDestination, wherein the information is known by the transmitting source node NSource; and the destination node NDestination constructs a switch route exploring response packet and transmits it to the transmitting source node NSource.

    Abstract translation: 在本发明中提供了一种开关路径探索方法，系统和装置。 该方法包括：发送源节点NSource构建探索请求分组的交换路由，并将其发送到目的节点NDestination; 所述交换路由探索请求分组包括从所述发送源节点NSource到所述目的节点NDestination的切换路由的信息，其中，所述信息由所述发送源节点NSource知道; 并且目的地节点NDestination构建探索响应分组的交换机路由，并将其发送到发送源节点NSource。

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