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    • 2. 发明申请
    • MULTI-DIMENSIONAL HISTOGRAM METHOD USING MINIMAL DATA-SKEW COVER IN SPACE-PARTITIONING TREE AND RECORDING MEDIUM STORING PROGRAM FOR EXECUTING THE SAME
    • 在空间划分树中使用最小数据仓库的多维组织方法和用于执行相同记录的中继存储程序
    • US20110145244A1
    • 2011-06-16
    • US12695500
    • 2010-01-28
    • Myoung Ho KimYohan J. RohJae Ho KimJin Hyun Son
    • Myoung Ho KimYohan J. RohJae Ho KimJin Hyun Son
    • G06F17/30
    • G06F16/24545
    • The present disclosure relates to a multi-dimensional histogram method using a minimal data-skew cover in a space-partitioning tree, which is used to estimate the selectivity of queries, that is, the sizes of query results, and a recording medium storing a program for executing the multi-dimensional histogram method. In the multi-dimensional histogram method, a Database (DB) system receives information required to generate a histogram from an outside of the DB system, and then constructs a space-partitioning tree based on the information required to generate a histogram. The DB system constructs a multi-dimensional histogram based on a minimal data-skew cover in the space-partitioning tree. When the DB system receives a query from the outside, the DB system calculates the estimate of the selectivity for the query by using the multi-dimensional histogram. Further, the present disclosure includes a recording medium storing a program for executing the multi-dimensional histogram method.
    • 本公开内容涉及使用空间分区树中的最小数据偏斜覆盖的多维直方图,其用于估计查询的选择性,即查询结果的大小,以及存储查询结果的记录介质 用于执行多维直方图方法的程序。 在多维直方图方法中,数据库(DB)系统从DB系统的外部接收生成直方图所需的信息,然后根据生成直方图所需的信息构建空间分割树。 DB系统基于空间分区树中的最小数据偏移覆盖来构建多维直方图。 当DB系统从外部接收到查询时,DB系统通过使用多维直方图计算查询的选择性的估计。 此外,本公开包括存储用于执行多维直方图方法的程序的记录介质。
    • 4. 发明授权
    • Circuit for saving battery for use in a radio paging receiver and method
thereof
    • 用于无线寻呼接收机的节电电路及其方法
    • US5193212A
    • 1993-03-09
    • US460995
    • 1990-01-04
    • Jin-Hyun Son
    • Jin-Hyun Son
    • H04B5/04H04B1/16H04B1/38H04M19/08H04W52/02H04W88/02
    • H04W52/0283H04M19/08H04W52/0229H04W88/022Y02B60/50
    • A circuit for saving battery power in a radio paging receiver having a process for supplying first and second power saving signals indicative of first and second ON and OFF power signals. A first radio-frequency section converts the received radio-frequency signals upon reception of the first ON power signal; a second radio-frequency section then filters and demodulates the output signals from the first radio-frequency section to provide demodulated signals having a first voltage upon reception of the second ON power. A waveform shaper shapes the waveform of the demodulated signals to provide digital signals to the processor upon reception of the second ON power signal; and a switch enables and disables transmission of the first and second ON and OFF power signals from a power source to the first and second radio-frequency sections and the waveform shaper upon reception of the first and second power saving signals.
    • 一种用于在具有提供表示第一和第二开启和关闭功率信号的第一和第二省电信号的处理的无线寻呼接收机中节省电池电力的电路。 第一射频部分在接收到第一ON功率信号时转换接收的射频信号; 然后第二射频部分对来自第一射频部分的输出信号进行滤波和解调,以在接收到第二导通电力时提供具有第一电压的解调信号。 波形整形器对解调信号的波形进行整形,以在接收到第二ON功率信号时向处理器提供数字信号; 并且当接收到第一和第二省电信号时,开关启用和禁止从电源向第一和第二射频部分和波形整形器传输第一和第二ON和OFF电力信号。