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19 条记录 (耗时 0.02 秒)

    Personal certification authority device
    11.
    发明授权
    Personal certification authority device 有权
    个人认证机构设备

    公开(公告)号：US07386726B2

    公开(公告)日：2008-06-10

    申请号：US10161567

    申请日：2002-05-31

    申请人： Christian Gehrmann ,  Bernard Smeets ,  Jacobus Haartsen ,  Joakim Persson

    发明人： Christian Gehrmann ,  Bernard Smeets ,  Jacobus Haartsen ,  Joakim Persson

    IPC分类号： H04L9/00

    CPC分类号： H04L63/062 ,  H04L9/3263 ,  H04L63/0823 ,  H04L2209/80

    摘要： A method for public key certification in a local network environment, wherein a personal certification authority associated with the local network environment is connected with a first device needing to be certified. Responsive to the connection, a certificate is provided to the device to be certified from the personal certification authority. The devices receiving a certificate may then use the certificate to carry out secure information exchange within the local network environment with other devices having a similar certificate.

    摘要翻译： 一种在本地网络环境中进行公钥认证的方法，其中与本地网络环境相关联的个人认证机构与需要认证的第一设备连接。 响应于该连接，将向从个人认证机构认证的设备提供证书。 接收证书的设备然后可以使用证书在具有相似证书的其他设备的本地网络环境内执行安全信息交换。

    Reduced complexity voice activity detector
    13.
    发明授权
    Reduced complexity voice activity detector 有权
    降低复杂度的语音活动检测器

    公开(公告)号：US06876965B2

    公开(公告)日：2005-04-05

    申请号：US09796383

    申请日：2001-02-28

    申请人： Fisseha Mekuria ,  Joakim Persson

    发明人： Fisseha Mekuria ,  Joakim Persson

    IPC分类号： G10L11/02 ,  H04B1/46 ,  G10L19/02

    CPC分类号： G10L25/78 ,  H04B1/46

    摘要： A voice activity detector is disclosed for use with a radio transmitter to continuously sense the presence of speech in an audio signal. Initially, the audio signal is processed to produce a train of signal samples. Signal peaks are identified therefrom, which are used to compute respective values for a succession of quasi-pitch periods associated with the signal sample train. The quasi-pitch period values are then selectively compared with one another, in order to determine the presence or absence of a speech component.

    摘要翻译： 公开了一种与无线电发射机一起使用的语音活动检测器，以连续地感测音频信号中的语音的存在。 最初，音频信号被处理以产生一串信号样本。 从其识别信号峰值，其用于计算与信号样本列相关联的一系列准音调周期的相应值。 然后，准音调周期值被选择性地彼此比较，以便确定语音分量的存在或不存在。

    Modulated message authentication system and method
    14.
    发明授权
    Modulated message authentication system and method 失效
    调制消息认证系统和方法

    公开(公告)号：US06754824B1

    公开(公告)日：2004-06-22

    申请号：US09415542

    申请日：1999-10-08

    申请人： Joakim Persson ,  Ben Smeets

    发明人： Joakim Persson ,  Ben Smeets

    IPC分类号： H04L900

    CPC分类号： H04L9/3242 ,  H04L2209/34

    摘要： A telecommunications system and method is disclosed for implementing a message authentication code (MAC) for transmitted digital information signals. Digital information signals typically include an error detecting code, such as a Cyclic Redundancy Check (CRC) code, to ensure reliable delivery of the information. In order to verify the identity of the sending node, the CRC code can be modulated by a sequence known only to the participating nodes. Thus, the CRC code not only provides an error detecting function, but also serves as a message authentication code.

    摘要翻译： 公开了用于实现用于发送的数字信息信号的消息认证码（MAC）的电信系统和方法。 数字信息信号通常包括诸如循环冗余校验（CRC）代码的错误检测码，以确保信息的可靠传送。 为了验证发送节点的身份，CRC码可以通过参与节点已知的序列进行调制。 因此，CRC码不仅提供错误检测功能，而且还用作消息认证码。

    Methods and apparatus for providing robust synchronization of radio transceivers
    15.
    发明授权
    Methods and apparatus for providing robust synchronization of radio transceivers 有权
    用于提供无线电收发器的鲁棒同步的方法和装置

    公开(公告)号：US06690740B1

    公开(公告)日：2004-02-10

    申请号：US09372250

    申请日：1999-08-11

    申请人： Sven Mattisson ,  Joakim Persson ,  Jacobus Cornelius Haartsen

    发明人： Sven Mattisson ,  Joakim Persson ,  Jacobus Cornelius Haartsen

    IPC分类号： H04L2720

    CPC分类号： H04L7/041 ,  H04L7/046 ,  H04L25/062 ,  H04L27/142

    摘要： Methods and apparatus for performing synchronization and DC-offset compensation in FM transmission systems significantly reduce the overhead associated with transmitting a conventional digital preamble at the start of each of a succession of transmitted digital data packets. According to exemplary embodiments, a multi-part digital preamble includes a short, substantially DC-free leading part followed by a code-protected synchronization part which is not necessarily substantially DC-free. The leading part provides for coarse DC offset estimation and synchronization, while the coded synchronization part carries timing and/or other useful information which can be unique for each packet. One or more substantially DC-free trailing parts follow the synchronization part, or are included in the synchronization part itself, and provide for fine tuning of the DC-offset estimate. Since the substantially DC-free leading and trailing parts are extremely short, and since the synchronization part carries useful information, the overhead associated with a preamble according to the invention is significantly reduced as compared to a conventional, entirely DC-free, preamble.

    摘要翻译： 用于在FM传输系统中执行同步和DC偏移补偿的方法和装置显着地减少了在一系列发送的数字数据分组中的每一个的开始时与传统的数字前导码相关联的开销。 根据示例性实施例，多部分数字前导码包括短的，基本上无DC的前导部分，其后面是代码保护的同步部分，其不一定基本上不含DC。 前置部分提供粗略的直流偏移估计和同步，而编码的同步部分承载每个分组可以是唯一的定时和/或其它有用的信息。 一个或多个基本无DC的拖尾部分跟随同步部分，或者被包括在同步部分本身中，并且提供对DC偏移估计的微调。 由于基本无DC的前导部分和尾部部分非常短，并且由于同步部分携带有用信息，与传统的完全无DC前导码相比，与根据本发明的前同步码相关联的开销显着降低。

    Load carriers for vehicles
    17.
    发明授权
    Load carriers for vehicles 有权
    车载载重

    公开(公告)号：US08047412B2

    公开(公告)日：2011-11-01

    申请号：US10567449

    申请日：2004-07-06

    申请人： Arnaud Premartin ,  Olivier Veuillot ,  Hans Odin ,  Joakim Persson

    发明人： Arnaud Premartin ,  Olivier Veuillot ,  Hans Odin ,  Joakim Persson

    IPC分类号： B60P3/07 ,  B60R9/10

    CPC分类号： B60R9/06 ,  B60R9/10 ,  Y10S224/924

    摘要： A load carrier for coupling to a vehicle. The load carrier includes a loading frame and a supporting arch that extends substantially upwardly from and transversely to the loading frame. The supporting arch is divisible into first and second arch parts, each of which arch parts is pivotally coupled to the loading frame such that, when divided, each of the first and second arch parts is configured to be pivoted down to a storage position lying substantially level with the loading frame. The arch parts are configured to be interlocked to each other into an in-use position, in which the first and said second arch parts substantially alone form the supporting arch.

    摘要翻译： 用于联接到车辆的负载载体。 负载载体包括装载框架和从装载框架大致向上延伸并且横向于从装载框架延伸的支撑拱顶。 支撑拱可以分成第一和第二拱形部分，每个拱形部分都枢转地联接到装载框架，使得当被分割时，第一和第二拱形部分中的每一个被构造成向下枢转到基本上位于的存储位置 水平与装载框架。 拱形部分构造成彼此互锁成为使用位置，其中第一和第二拱形件基本上单独形成支撑拱。

    Side-tone control within a telecommunication instrument
    18.
    发明授权
    Side-tone control within a telecommunication instrument 有权
    电讯仪器内的侧音控制

    公开(公告)号：US06768795B2

    公开(公告)日：2004-07-27

    申请号：US09758665

    申请日：2001-01-11

    申请人： Alberto Diego Jimenez Feltström ,  Mats Ormin ,  Ulf Axel Lindgren ,  Joakim Persson

    发明人： Alberto Diego Jimenez Feltström ,  Mats Ormin ,  Ulf Axel Lindgren ,  Joakim Persson

    IPC分类号： H04M900

    CPC分类号： H04M1/585

    摘要： A side-tone control unit for a telecommunication instrument is configured to include a side-tone amplifier having a transfer function selectively controlled in accordance with a set of amplifier parameters, and a side-tone controller, coupled to the side-tone amplifier, for selectively applying the set of amplifier parameters to the side-tone amplifier based on the detected energy of an uplink signal and the detected energy of a downlink signal. The side tone controller can select a particular set of amplifier parameters by indexing a table in accordance with quantized values of the detected uplink signal energy and the detected downlink signal energy.

    摘要翻译： 用于电信仪器的侧音控制单元被配置为包括具有根据一组放大器参数选择性地控制的传递函数的侧调放大器和耦合到侧音放大器的侧调控制器，用于 基于检测到的上行链路信号的能量和检测到的下行链路信号的能量，选择性地将该组放大器参数应用于侧音放大器。 侧音控制器可以根据检测到的上行链路信号能量和检测到的下行链路信号能量的量化值对表格进行索引来选择特定的一组放大器参数。

    Method and apparatus for providing comfort noise in communication system with discontinuous transmission
    19.
    发明授权
    Method and apparatus for providing comfort noise in communication system with discontinuous transmission 有权
    在具有不连续传输的通信系统中提供幅度可调舒适噪声的方法和装置

    公开(公告)号：US06708147B2

    公开(公告)日：2004-03-16

    申请号：US09796380

    申请日：2001-02-28

    申请人： Fisseha Mekuria ,  Joakim Persson

    发明人： Fisseha Mekuria ,  Joakim Persson

    IPC分类号： G10L1100

    CPC分类号： G10L19/012

    摘要： In a voice communication system having a transmitter and receiver on opposing sides of an interface, the transmitter is switched on to transmit speech components and is switched off during speech pauses. To provide comfort noise at the receiver, and thus avoid annoying effects caused by continual switching of the transmitter, a comfort noise generator disposed to produce comfort noise of an adjustable amplitude is located on the receiver side of the interface. A first subsystem responsive to operation of the transmitter provides a flag to the receiver to commence operation of the comfort noise generator, when the transmitter discontinues transmission in response to a speech pause. A second subsystem transmits a succession of amplitude parameters through the interface to selectively adjust the amplitude of the generator in corresponding relationship with a noise level at the transmitter.

    摘要翻译： 在具有在接口的相对侧上的发射机和接收机的语音通信系统中，发射机被接通以传输语音分量，并且在语音暂停期间被关闭。 为了在接收机上提供舒适噪声，并且因此避免了由发射机的连续切换引起的麻烦的影响，设置成产生可调振幅的舒适噪声的舒适噪声发生器位于接口的接收机侧。 当发射机响应于语音暂停而停止发送时，响应于发射机的操作的第一子系统向接收机提供标志以开始舒适噪声发生器的操作。 第二子系统通过接口发送一系列幅度参数，以选择性地调整发生器的幅度与发射机处的噪声电平相对应的关系。