System and Method for Securing Wireless Communications
    11.
    发明申请
    System and Method for Securing Wireless Communications 有权
    用于保护无线通信的系统和方法

    公开(公告)号:US20120106737A1

    公开(公告)日:2012-05-03

    申请号:US12915521

    申请日:2010-10-29

    IPC分类号: H04K1/00

    CPC分类号: H04L9/0875

    摘要: A system and method for securing wireless communications are provided. A method for secure communications by a first user includes estimating a channel between the first user and a second user, thereby producing an first phase estimate of the channel, generating a first block of secret bits based on the first phase estimate of the channel, and transmitting public information regarding the first block of secret bits to the second user. The second user makes use of the public information to generate a second block of secret bits.

    摘要翻译: 提供了一种用于确保无线通信的系统和方法。 用于由第一用户进行安全通信的方法包括估计第一用户与第二用户之间的信道,由此产生信道的第一相位估计,基于信道的第一相位估计生成第一密钥位,以及 向第二用户发送关于第一密钥块的公开信息。 第二用户利用公共信息产生第二个秘密位块。

    Salient Object Detection
    12.
    发明申请
    Salient Object Detection 有权
    突出物体检测

    公开(公告)号:US20080304740A1

    公开(公告)日:2008-12-11

    申请号:US11759192

    申请日:2007-06-06

    IPC分类号: G06K9/00

    CPC分类号: G06K9/3233 G06K9/4638

    摘要: Methods for detecting a salient object in an input image are described. For this, the salient object in an image may be defined using a set of local, regional, and global features including multi-scale contrast, center-surround histogram, and color spatial distribution. These features are optimally combined through conditional random field learning. The learned conditional random field is then used to locate the salient object in the image. The methods can also use image segmentation, where the salient object is separated from the image background.

    摘要翻译: 描述用于检测输入图像中的突出物体的方法。 为此,可以使用一组局部,区域和全局特征来定义图像中的显着对象,包括多尺度对比度,中心环绕直方图和颜色空间分布。 这些特征通过条件随机场学习进行最佳组合。 然后使用学习的条件随机字段来定位图像中的显着对象。 该方法还可以使用图像分割,其中显着对象与图像背景分离。

    System and method for securing wireless transmissions
    14.
    发明授权
    System and method for securing wireless transmissions 有权
    用于保护无线传输的系统和方法

    公开(公告)号:US08605905B2

    公开(公告)日:2013-12-10

    申请号:US12871574

    申请日:2010-08-30

    IPC分类号: H04L29/06

    CPC分类号: H04W12/02 H04W12/12

    摘要: A system and method for securing wireless communications are provided. A method for transmitting a message by a transmitter includes partitioning the message into N sub-messages, where N is a positive integer value greater than or equal to two, encoding the N sub-messages into a plurality of packet groups with a first security code, encoding the plurality of packet groups into a plurality of output packets with a second security code, and transmitting the plurality of output packets.

    摘要翻译: 提供了一种用于确保无线通信的系统和方法。 用于由发射机发送消息的方法包括将消息划分为N个子消息,其中N是大于或等于2的正整数,其中N个子消息被编码成具有第一安全码的多个分组组 将所述多个分组组编码成具有第二安全码的多个输出分组,以及发送所述多个输出分组。

    Prevention of audio pop in a digital audio device
    15.
    发明授权
    Prevention of audio pop in a digital audio device 失效
    预防数字音频设备中的音频流行音乐

    公开(公告)号:US08315408B2

    公开(公告)日:2012-11-20

    申请号:US12499936

    申请日:2009-07-09

    CPC分类号: H03F1/305 H03G3/348

    摘要: An electronic audio device with a digital audio output channel in which an amplifier output voltage is gradually ramped up and down to avoid causing a popping sound when the device is turned on and off. This is accomplished without employing any additional hardware, by incrementally changing a digital input word applied to a digital audio source, such as a DSP, so as to gradually change the amplifier output voltage between a minimum, such as zero volts, and a DC working voltage. On powering up, the amplifier is only turned on after the digital word is applied, but while it still results in a minimum amplifier output, and on powering down the amplifier is turned off after it's output has been ramped down, but before removing the digital input word. Sources and output channels can also be switched over by powering down, and then powering up, following the same method.

    摘要翻译: 具有数字音频输出通道的电子音频装置,其中放大器输出电压上下缓慢地上升,以避免在装置打开和关闭时引起爆音。 这通过逐渐改变应用于数字音频源(例如DSP)的数字输入字逐渐改变放大器输出电压在最小(如零伏特)和直流工作 电压。 上电时,放大器仅在数字字被施加之后才导通,但仍然会导致最小的放大器输出,并且在掉电后,放大器在输出降低后会被关闭,但在删除数字字之前 输入字 源和输出通道也可以通过关闭电源进行切换,然后按照相同的方法上电。

    System and Method for Securing Wireless Transmissions
    16.
    发明申请
    System and Method for Securing Wireless Transmissions 有权
    确保无线传输的系统和方法

    公开(公告)号:US20110211696A1

    公开(公告)日:2011-09-01

    申请号:US12714095

    申请日:2010-02-26

    IPC分类号: H04K1/00

    CPC分类号: H04K1/00

    摘要: A system and method for securing wireless transmissions is provided. A method for transmitting secure messages by a transmitter includes encoding a message with a secrecy code to produce L output codewords, where L is an integer value greater than one. The secrecy code includes a first security code and a second security code. The method also includes transmitting one of the L output codewords to a communications device when a channel quality of a channel between the transmitter and the communications device satisfies a criterion, and repeating the transmitting for any remaining L−1 output codewords.

    摘要翻译: 提供了一种用于确保无线传输的系统和方法。 用于由发射机发送安全消息的方法包括用保密码编码消息以产生L个输出码字,其中L是大于1的整数值。 秘密码包括第一安全码和第二安全码。 该方法还包括当发射机和通信设备之间的信道的信道质量满足标准并且对任何剩余的L-1输出码字重复发送时,将L个输出码字之一发射到通信设备。

    Salient object detection
    17.
    发明授权
    Salient object detection 有权
    突出物体检测

    公开(公告)号:US07940985B2

    公开(公告)日:2011-05-10

    申请号:US11759192

    申请日:2007-06-06

    IPC分类号: G06K9/34

    CPC分类号: G06K9/3233 G06K9/4638

    摘要: Methods for detecting a salient object in an input image are described. For this, the salient object in an image may be defined using a set of local, regional, and global features including multi-scale contrast, center-surround histogram, and color spatial distribution. These features are optimally combined through conditional random field learning. The learned conditional random field is then used to locate the salient object in the image. The methods can also use image segmentation, where the salient object is separated from the image background.

    摘要翻译: 描述用于检测输入图像中的突出物体的方法。 为此,可以使用一组局部,区域和全局特征来定义图像中的显着对象,包括多尺度对比度,中心环绕直方图和颜色空间分布。 这些特征通过条件随机场学习进行最佳组合。 然后使用学习的条件随机字段来定位图像中的显着对象。 该方法还可以使用图像分割,其中显着对象与图像背景分离。

    PREVENTION OF AUDIO POP IN A DIGITAL AUDIO DEVICE
    18.
    发明申请
    PREVENTION OF AUDIO POP IN A DIGITAL AUDIO DEVICE 失效
    在数字音频设备中预防音频播放

    公开(公告)号:US20090275322A1

    公开(公告)日:2009-11-05

    申请号:US12499936

    申请日:2009-07-09

    IPC分类号: H04M3/00 H04B15/00

    CPC分类号: H03F1/305 H03G3/348

    摘要: An electronic audio device with a digital audio output channel in which an amplifier output voltage is gradually ramped up and down to avoid causing a popping sound when the device is turned on and off. This is accomplished without employing any additional hardware, by incrementally changing a digital input word applied to a digital audio source, such as a DSP, so as to gradually change the amplifier output voltage between a minimum, such as zero volts, and a DC working voltage. On powering up, the amplifier is only turned on after the digital word is applied, but while it still results in a minimum amplifier output, and on powering down the amplifier is turned off after it's output has been ramped down, but before removing the digital input word. Sources and output channels can also be switched over by powering down, and then powering up, following the same method.

    摘要翻译: 具有数字音频输出通道的电子音频装置,其中放大器输出电压上下缓慢地上升,以避免在装置打开和关闭时引起爆音。 这通过逐渐改变应用于数字音频源(例如DSP)的数字输入字逐渐改变放大器输出电压在最小(如零伏特)和直流工作 电压。 上电时,放大器仅在数字字被施加之后才导通,但仍然会导致最小的放大器输出,并且在掉电后,放大器在输出缓慢下降后关闭,但在取出数字字之前 输入字 源和输出通道也可以通过关闭电源进行切换,然后按照相同的方法上电。

    System and method for securing wireless communications
    20.
    发明授权
    System and method for securing wireless communications 有权
    用于确保无线通信的系统和方法

    公开(公告)号:US08744082B2

    公开(公告)日:2014-06-03

    申请号:US12938841

    申请日:2010-11-03

    IPC分类号: H04K1/00

    摘要: A system and method for securing wireless communications are provided. A method for secure communications by a first user includes estimating a channel between the first user and a second user based on a pilot signal transmitted by the second user, determining a first threshold and a second threshold based on the estimate of channel, selecting a first subset of channel estimates, signaling the first subset of channel estimates to the second user, receiving a second subset of channel estimates from the second user, for each channel estimate in the second subset of channel estimates, quantizing the channel estimate based on a relationship between a gain of the channel estimate and the first threshold and the second threshold, generating a first secret key based on quantized channel estimates, verifying that the first secret key matches a second secret key generated by the second user, and transmitting information to the second user.

    摘要翻译: 提供了一种用于确保无线通信的系统和方法。 用于由第一用户进行安全通信的方法包括基于由第二用户发送的导频信号来估计第一用户与第二用户之间的信道,基于信道的估计来确定第一阈值和第二阈值,选择第一用户 信道估计的子集,向第二用户发送信道估计的第一子集,从第二用户接收信道估计的第二子集,用于信道估计的第二子集中的每个信道估计,基于信道估计之间的关系量化信道估计 信道估计的增益和第一阈值和第二阈值,基于量化的信道估计生成第一秘密密钥,验证第一秘密密钥与第二用户生成的第二密钥匹配,以及向第二用户发送信息 。