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    Detection technique for digitally altered images
    52.
    发明授权
    Detection technique for digitally altered images 有权
    用于数字改变图像的检测技术

    公开(公告)号：US08260067B2

    公开(公告)日：2012-09-04

    申请号：US12421949

    申请日：2009-04-10

    Applicant: Yun-Qing Shi ,  Bin Li

    Inventor： Yun-Qing Shi ,  Bin Li

    IPC: G06K9/36 ,  G06K9/38 ,  G06K9/46

    CPC classification number: H04N19/60 ,  H04N19/865

    Abstract: Techniques are generally described to determine whether a JPEG image has undergone two compressions. Probabilities can be computed for the first digits of quantized DCT (discrete cosine transform) coefficients from a set of AC (alternate current) modes to detect or determine whether the JPEG image has undergone two compressions. The set of AC modes may include a predetermined number of distinguishable AC modes where a distinguishable AC mode may be an AC mode in which a second quantization step (QS2) is not an integer multiple of the first quantization step (QS1). Classifiers may be created during a training process, and later may be used to assist in determining whether a suspect JPEG image has undergone two compressions. When the classifiers support a multi-classification system, described detection techniques may also be arranged to determine a primary quality factor for the double compressed JPEG image.

    Abstract translation: 通常描述技术来确定JPEG图像是否经历了两次压缩。 可以从一组AC（交替电流）模式的量化DCT（离散余弦变换）系数的第一位计算概率，以检测或确定JPEG图像是否经历了两次压缩。 AC模式的集合可以包括预定数量的可区分AC模式，其中可区分AC模式可以是其中第二量化步长（QS2）不是第一量化步长（QS1）的整数倍的AC模式。 可以在训练过程中创建分类器，并且稍后可以用来帮助确定可疑JPEG图像是否经历了两次压缩。 当分类器支持多分类系统时，还可以安排所描述的检测技术来确定双压缩JPEG图像的主要品质因子。

    Handover Method of Terminal, and Base Station Thereof
    59.
    发明申请
    Handover Method of Terminal, and Base Station Thereof 有权
    终端切换方法及其基站

    公开(公告)号：US20120149378A1

    公开(公告)日：2012-06-14

    申请号：US13390778

    申请日：2010-03-30

    Applicant: Bin Li ,  Na Liang

    Inventor： Bin Li ,  Na Liang

    IPC: H04W36/22

    CPC classification number: H04W36/0055 ,  H04W28/08

    Abstract: A handover method of a target base station is disclosed in the present invention, including: after a source base station to which a terminal belongs transmitting a handover request message to at least one alternate target base station, every alternate target base station notifying the source base station of a load state parameter, and the source base station determining one target base station according to the load state parameter of every alternate target base station and indicating the terminal to perform handover to the target base station. A base station is also provided in the present invention, including: a handover request transmission module, a handover request response reception module, a target base station determination module and a handover request response transmission module. The present invention avoids the re-request process of the base station when the handover request fails, and can improve the handover success ratio.

    Abstract translation: 本发明公开了一种目标基站的切换方法，包括：在终端所属的源基站向至少一个备用目标基站发送切换请求消息之后，每个备用目标基站通知源基站 并且源基站根据每个备用目标基站的负载状态参数确定一个目标基站，并指示终端执行到目标基站的切换。 本发明还提供一种基站，包括：切换请求传输模块，切换请求响应接收模块，目标基站确定模块和切换请求响应传输模块。 本发明避免了当切换请求失败时基站的重新请求过程，并且可以提高切换成功率。

    High speed dynamic comparative latch
    60.
    发明申请
    High speed dynamic comparative latch 有权

    公开(公告)号：US20120133395A1

    公开(公告)日：2012-05-31

    申请号：US12981514

    申请日：2010-12-30

    Applicant: Bin Li ,  Guosheng Wu

    Inventor： Bin Li ,  Guosheng Wu

    IPC: H03K3/023

    CPC classification number: H03K3/356173 ,  H03K5/249

    Abstract: A dynamic high-speed comparative latch comprises a pre-amplifier unit for enlarging input differential signals, a regenerating latch unit for latching outputted differential signals from the pre-amplifier unit by using a positive feedback, specifically, converting the output of the pre-amplifier unit into a latched result at a first state of a clock cycle, and then retaining the latched result and simultaneously resetting relevant nodes at a second state opposite to the first state of the clock cycle, and a latch unit for outputting the effective outputted value of the regenerating latch unit when the regenerating latch unit being in a retaining state. The pre-amplifier unit is connected with the regenerating latch unit, and the regenerating latch unit is connected with the latch unit. The pre-amplifier unit comprises only one input clock signal. The present invention has a simple structure, and ensures the correctness of the output result of the latch.

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