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    • 1. 发明授权
    • Intersystem base station handover
    • 系统基站切换
    • US07876729B1
    • 2011-01-25
    • US09521359
    • 2000-03-08
    • Francesco GrilliAvinash JainWilliam Gardner
    • Francesco GrilliAvinash JainWilliam Gardner
    • H04W4/00H04W36/00H04B7/216H04B17/02H04J3/00
    • H04W36/14H04W36/18
    • A mobile wireless telecommunications system includes base stations of a first type operating according to a first air interface, and base stations of a second type operating according to a second air interface. Methods and apparatus are provided for handing over a mobile station in the system from a first base station, which is of the first type, to a second base station, which is of the second type. A communications link is established over the first air interface between the mobile station and the first base station. Data are received from the mobile station responsive to a signal received by the mobile station over the second air interface from the second base station, substantially without breaking the communications link with the first base station. The mobile station is handed over from the first to the second base station responsive to the data received therefrom. In particular, a method of conducting intersystem handover from a multicarrier system to a direct spread system is provided. Timing synchronization is also advantageously made available through the mobile station.
    • 移动无线电信系统包括根据第一空中接口操作的第一类型的基站和根据第二空中接口操作的第二类型的基站。 提供了将系统中的移动台从第一类型的第一基站切换到第二类型的第二基站的方法和装置。 在移动台和第一基站之间的第一空中接口建立通信链路。 响应于移动台通过第二空中接口从第二基站接收的信号,从移动台接收数据,基本上不破坏与第一基站的通信链路。 响应于从其接收的数据,移动台从第一基站切换到第二基站。 特别地,提供了从多载波系统到直接扩展系统进行系统间切换的方法。 有利地通过移动台可用定时同步。
    • 7. 发明申请
    • Method for removing streaks from a scanned image
    • 从扫描图像中去除条纹的方法
    • US20070127840A1
    • 2007-06-07
    • US11295959
    • 2005-12-07
    • William GardnerDu-Yong Ng
    • William GardnerDu-Yong Ng
    • G06K9/40H04N1/409
    • G06K9/40H04N1/4097
    • A method for removing streaks from a scanned image includes performing a scanner light source OFF scan to generate a dark image having M rows of pixels and N+W columns of pixels; generating a line noise profile for the N columns of pixels of the dark image; performing a scanner light source ON scan to generate a regular image having M rows of pixels and N+W columns of pixels; processing the W columns of pixels of the regular image to detect a magnitude of the streak in the regular image; use the magnitude of the streak and the line noise profile to predict an amount of dark noise removal for each of the N columns of pixels of the regular image at the location of the streak; and subtracting the predicted amount of dark noise removal for each of the N columns of pixels from the respective N columns of pixels of the regular image.
    • 用于从扫描图像中去除条纹的方法包括执行扫描仪光源OFF扫描以产生具有M行像素和N + W列像素的暗图像; 生成暗图像的N列像素的线噪声分布; 执行扫描仪光源ON扫描以产生具有M行像素和N + W列像素的规则图像; 处理常规图像的W列的像素以检测正常图像中的条纹的大小; 使用条纹和线噪声分布的大小来预测在条纹位置处的常规图像的N列像素中的每一个的暗噪声去除量; 并从所述常规图像的各N列像素中减去所述N列像素中的每一个的暗噪声去除的预测量。