中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

93 records (took 0.034 seconds)

    VERIFIED DISTANCE RANGING
    71.
    发明授权
    VERIFIED DISTANCE RANGING 有权
    TESTED距离测量

    公开(公告)号：EP2020126B1

    公开(公告)日：2012-07-25

    申请号：EP07760866.9

    申请日：2007-04-18

    Applicant: QUALCOMM Incorporated

    Inventor： JULIAN, David Jonathan ,  EKBAL, Amal ,  LEE, Chong U.

    IPC: G01S13/76 ,  H04W64/00

    CPC classification number: G01S13/765 ,  G01S13/0209 ,  G01S13/284 ,  H04W64/00

    Abstract: Various techniques are described relating to verifying a distance between devices. A distance between two devices may be verified by requiring one of the devices to take one or more actions that generate a result that is only possible if the device is at most a given distance from the other device. In some aspects verified ranging is accomplished through the use of a ranging signal and a responsive signal. In some aspects the ranging signal may comprise a random, pseudorandom, or deterministic sequence. A responding device may operate on a ranging signal in accordance with a known function to generate a responsive signal. A ranging device also may perform operations to determine the likelihood that a responding device properly operated on a ranging signal that the ranging device transmitted to the responding device.

    DELAY LINE CALIBRATION
    76.
    发明公开
    DELAY LINE CALIBRATION 审中-公开
    DELAY在线校准

    公开(公告)号：EP2095510A1

    公开(公告)日：2009-09-02

    申请号：EP07854613.2

    申请日：2007-11-12

    Applicant: QUALCOMM Incorporated

    Inventor： LEE, Chong U. ,  JULIAN, David Jonathan ,  EKBAL, Amal

    IPC: H03L7/081

    CPC classification number: H03L7/0812 ,  H03L7/085

    Abstract: A tunable delay line is calibrated to maintain the delay of the delay line at a desired value or within a desired range of values. In some aspects a signal is passed through a delay line multiple times so that the cumulative delay of the signal through the delay line (e.g., as indicated by a count) may be calculated over a period of time. The count is compared with an expected count and, based on this comparison, the delay of the delay line is adjusted as necessary. In some aspects the signal may comprise a digital signal. In some aspects a delay through a delay line may be calculated based on analysis of amplitude changes in a signal caused by a phase shift imparted on the signal by the delay line. In some aspects a delay line is incorporated into a transmitted reference system to generate and/or process transmitted reference signals.

    DELAY LINE CALIBRATION
    77.
    发明公开
    DELAY LINE CALIBRATION 审中-公开
    校准延迟线

    公开(公告)号：EP2095506A2

    公开(公告)日：2009-09-02

    申请号：EP07864266.7

    申请日：2007-11-12

    Applicant: QUALCOMM Incorporated

    Inventor： LEE, Chong U. ,  JULIAN, David Jonathan ,  EKBAL, Amal

    IPC: H03K5/13 ,  H03K5/00

    CPC classification number: H03K5/131 ,  H03K2005/00104 ,  H03K2005/00156

    Abstract: A tunable delay line is calibrated to maintain the delay of the delay line at a desired value or within a desired range of values. In some aspects a signal is passed through a delay line multiple times so that the cumulative delay of the signal through the delay line (e.g., as indicated by a count) may be calculated over a period of time. The count is compared with an expected count and, based on this comparison, the delay of the delay line is adjusted as necessary. In some aspects the signal may comprise a digital signal. In some aspects a delay through a delay line may be calculated based on analysis of amplitude changes in a signal caused by a phase shift imparted on the signal by the delay line. In some aspects a delay line is incorporated into a transmitted reference system to generate and/or process transmitted reference signals.

    VERIFIED DISTANCE RANGING
    78.
    发明公开
    VERIFIED DISTANCE RANGING 有权
    TESTED距离测量

    公开(公告)号：EP2020126A1

    公开(公告)日：2009-02-04

    申请号：EP07760866.9

    申请日：2007-04-18

    Applicant: QUALCOMM Incorporated

    Inventor： JULIAN, David Jonathan ,  EKBAL, Amal ,  LEE, Chong U.

    IPC: H04L12/56

    CPC classification number: G01S13/765 ,  G01S13/0209 ,  G01S13/284 ,  H04W64/00

    Abstract: Various techniques are described relating to verifying a distance between devices. A distance between two devices may be verified by requiring one of the devices to take one or more actions that generate a result that is only possible if the device is at most a given distance from the other device. In some aspects verified ranging is accomplished through the use of a ranging signal and a responsive signal. In some aspects the ranging signal may comprise a random, pseudorandom, or deterministic sequence. A responding device may operate on a ranging signal in accordance with a known function to generate a responsive signal. A ranging device also may perform operations to determine the likelihood that a responding device properly operated on a ranging signal that the ranging device transmitted to the responding device.

    INTER-PULSE DUTY CYCLING
    79.
    发明公开
    INTER-PULSE DUTY CYCLING 审中-公开
    ARBEITSZYKLUS ZWISCHEN IMPULSEN

    公开(公告)号：EP2020091A2

    公开(公告)日：2009-02-04

    申请号：EP07761399.0

    申请日：2007-04-26

    Applicant: Qualcomm Incorporated

    Inventor： JIA, Zhanfeng ,  LEE, Chong U. ,  EKBAL, Amal ,  JULIAN, David Jonathan

    IPC: H04B1/69 ,  H04B1/16

    CPC classification number: H04B1/7174 ,  H04B1/71632 ,  H04R25/554 ,  H04R25/558 ,  H04R27/00 ,  H04R2225/33 ,  H04R2225/55 ,  H04R2227/003 ,  H04R2420/07

    Abstract: Low power wireless communication techniques may be employed in devices that communicate via a wireless body area network, a wireless personal area network, or some other type of wireless communication link. In some implementations the devices may communicate via one or more impulse-based ultra-wideband channels. Inter-pulse duty cycling may be employed to reduce the power consumption of a device. Power may be provided for the transmissions and receptions of pulses by charging and discharging a capacitive element according to the inter-pulse duty cycling. Sub-packet data may be transmitted and received via a common frequency band. A cell phone may multicast to two or more peripherals via wireless communication links.

    Abstract translation: 低功率无线通信技术可以用于经由无线体区域网络，无线个人区域网络或某种其他类型的无线通信链路进行通信的设备中。 在一些实现中，设备可以经由一个或多个基于脉冲的超宽带信道进行通信。 可以采用脉冲间占空比来降低器件的功耗。 可以通过根据脉冲间负载循环对电容元件充电和放电来为脉冲的发射和接收提供功率。 可以经由公共频带发送和接收子分组数据。 蜂窝电话可以通过无线通信链路多播到两个或多个外围设备。

    LOW POWER OUTPUT STAGE
    80.
    发明公开
    LOW POWER OUTPUT STAGE 有权
    低功率输出级

    公开(公告)号：EP2013967A2

    公开(公告)日：2009-01-14

    申请号：EP07761014.5

    申请日：2007-04-20

    Applicant: QUALCOMM Incorporated

    Inventor： LEE, Chong U. ,  JULIAN, David Jonathan

    IPC: H03F3/217

    CPC classification number: H03F3/217 ,  H03F2200/331

    Abstract: Power consumption of an output stage such as a class-D output stage may depend on the amplitude and the activity of the signal being output. Here, control signals may be generated to independently control coupled switches of the output stage and to provide a tri-state control scheme for the output stage. These control signals may be generated based on durations of different levels of an input signal over one or more periods of time.

    Abstract translation: 诸如D类输出级的输出级的功耗可能取决于输出信号的幅度和活动。 这里，可以产生控制信号以独立地控制输出级的耦合开关并且为输出级提供三态控制方案。 这些控制信号可以基于一个或多个时间段内的输入信号的不同级别的持续时间来生成。

Patent Agency Ranking