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    • 93. 发明申请
    • GLONASS Bit Boundary Detection
    • GLONASS位边界检测
    • US20120050096A1
    • 2012-03-01
    • US12870533
    • 2010-08-27
    • Hao-Ren ChengQinfang SunHao ZhouGaspar Lee
    • Hao-Ren ChengQinfang SunHao ZhouGaspar Lee
    • G01S19/42
    • G01S19/423
    • A method of determining a bit boundary of a GLONASS string is provided. In this method, a global position receiver can remove the meander sequence from bits of a GLONASS signal. After removing the meander sequence, time averages of bit energies for 20 possible (consecutive) bit boundary positions can be computed. At this point, the receiver can select a position from the 20 possible bit boundary positions that maximizes bit energy. A maximum accumulated value at this position as well as offset accumulated values at 5 ms and 15 ms offset from the position can be determined. Then, the receiver can determine whether a ratio of at least one of the offset accumulated values to the maximum accumulated value meets a predetermined condition. When the ratio meets the predetermined condition, the receiver can output the position as the bit boundary of the GLONASS string.
    • 提供了一种确定GLONASS字符串的位边界的方法。 在该方法中,全局位置接收器可以从GLONASS信号的位中去除曲折序列。 在去除曲折序列之后,可以计算20个可能(连续)位边界位置的位能量的时间平均值。 此时,接收器可以从最大化位能量的20个可能的位边界位置中选择一个位置。 可以确定该位置处的最大累加值以及距离该位置偏移5ms和15ms的偏移累加值。 然后,接收机可以确定偏移累积值中的至少一个与最大累加值的比率是否满足预定条件。 当该比率满足预定条件时,接收器可以输出该位置作为GLONASS串的位边界。
    • 99. 发明授权
    • Bit map character convertor using chain-codes for the character filling
process
    • 位图字符转换器使用字符填充过程的链码
    • US5600772A
    • 1997-02-04
    • US291445
    • 1994-08-17
    • Hao ZhouLe Jun Shao
    • Hao ZhouLe Jun Shao
    • G06T11/40G06T11/00
    • G06T11/40
    • A data converting apparatus and process for converting outline representations of a character into its bit mapped form using two buffers one being for the bit mapped form of the character symbol and the other for the chain-code representation of the outline of the character are disclosed. Three steps are utilized in the process. The first step draws the character outline on to the drawing buffer and generates the chain-code representation with flags to indicate contour collisions. The contours are then scanned one more time to add missing flags on the chain-code representation. Finally, the inside part of the contour on the drawing buffer is filled using the chain-code representations of the contour, to provide a filled character.
    • 公开了一种数据转换装置和处理,用于使用两个缓冲器将字符的轮廓表示转换成其位映射形式,一个用于字符符号的位映射形式,另一个用于字符轮廓的链码表示。 在这个过程中使用了三个步骤。 第一步将字符轮廓绘制到绘图缓冲区,并用标志生成链码表示,以指示轮廓碰撞。 然后,轮廓再扫描一次以在链码表示上添加缺少的标记。 最后,使用轮廓的链码表示填充绘图缓冲区上的轮廓的内部部分,以提供填充字符。