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    • 3. 发明申请
    • Index adding program of relational database, index adding apparatus, and index adding method
    • 关系数据库索引添加程序,索引添加装置和索引添加方法
    • US20060004840A1
    • 2006-01-05
    • US10996762
    • 2004-11-24
    • Toshiaki Senda
    • Toshiaki Senda
    • G06F17/00
    • G06F16/2272
    • An index adding program, index adding apparatus, and index adding method of a relational database, that enables dynamic and efficient addition of a new index without stopping service to an application, by contriving a method of reflecting an update log to the index. The index of the relational database is initially generated and an updating log for the relational database is accumulated during the initial index generation. Thereafter, data corresponding to an update request to the relational database is present in the index; the update request is reflected to the index. If the request is not present, update request is stored in the work area. Further, reflecting of an accumulated update log to the initially generated index is sequentially executed, the update log is disregarded, if the data corresponding to the update log is stored in the work area, or alternatively, the update log is reflected to the index, if data corresponding to the update log is not stored in the work area.
    • 通过设计一种反映更新日志到索引的方法,可以通过关系数据库的索引添加程序,索引添加设备和索引添加方法来实现动态和高效地添加新索引而不停止对应用程序的服务。 最初生成关系数据库的索引,并在初始索引生成期间累积关系数据库的更新日志。 此后,与关系数据库的更新请求对应的数据存在于索引中; 更新请求将反映到索引。 如果请求不存在,更新请求将存储在工作区域中。 此外,顺序地执行对初始生成的索引的累积更新日志的反映,如果与更新日志对应的数据存储在工作区域中,或者更新日志被反映到索引,则忽略更新日志, 如果对应于更新日志的数据未存储在工作区域中。
    • 5. 发明授权
    • Coordinates input apparatus
    • 坐标输入装置
    • US4902858A
    • 1990-02-20
    • US273642
    • 1988-11-10
    • Tsuguya YamanamiToshiaki Senda
    • Tsuguya YamanamiToshiaki Senda
    • G06F3/046G06F3/033G06F3/041G06F3/048
    • G06F3/046
    • A system for detecting the types and statuses of position designating devices is incorporated in a coordinates input apparatus having a tablet constituting a coordinates input section, a plurality of position designating devices of different types, and a position detecting circuit for driving the tablet and detecting positions at which coordinates are input by the position designating devices. The system has an antenna coil disposed around a coordinates input range of the tablet, and a tuning circuit disposed in each of the position designating devices for transmitting radio waves in response to an external signal at an individual frequency determined in accordance with the type of the corresponding position designating device. An AC signal of predetermined frequencies is applied to the antenna coil so that it transmits radio waves. The types and statuses of the position designating devices are detected by judging the condition of the position designating circuits from signals within the antenna coil while the transmission of the radio waves is suspended. With this system, the types and statuses of a plurality of position designating devices can be detected without having to connect the devices to other circuits via cords or provide them with complicated signal generating circuits and power sources such as batteries.
    • 用于检测位置指定装置的类型和状态的系统被结合在具有平板电脑构成坐标输入部分,多个不同类型的位置指定装置的坐标输入装置中,以及用于驱动图形输入板和检测位置的位置检测电路 在哪个坐标由位置指定装置输入。 该系统具有围绕平板电脑的坐标输入范围设置的天线线圈,以及设置在每个位置指示装置中的调谐电路,用于响应于根据外部信号按照 相应的位置指定装置。 将预定频率的AC信号施加到天线线圈,从而发送无线电波。 通过暂停无线电波的发送,通过从天线线圈内的信号判断位置指定电路的状况来检测位置指定装置的种类和状态。 利用该系统,可以检测多个位置指定装置的类型和状态,而不必经由线将装置连接到其它电路,或者向它们提供复杂的信号发生电路和诸如电池的电源。
    • 7. 再颁专利
    • Electronic blackboard and accessories such as writing tools
    • 电子黑板及配件如书写工具
    • USRE35329E
    • 1996-09-17
    • US74569
    • 1993-06-10
    • Azuma MurakamiKazuo AokiTsuguya YamanamiYoshiaki TomofujiTakeshi TanakaSatoshi InashimaTakahiko FunahashiToshihide ChikamiToshiaki Senda
    • Azuma MurakamiKazuo AokiTsuguya YamanamiYoshiaki TomofujiTakeshi TanakaSatoshi InashimaTakahiko FunahashiToshihide ChikamiToshiaki Senda
    • B43L1/04G06F3/033G06F3/041G06F3/046G06F3/048G06K11/06H04N1/00G08C21/00
    • G06F3/046G06F3/033G06F3/03545
    • A characteristic and the position of an implement with a tuned circuit having one of plural resonant frequencies are determined. AC energy at the plural different resonant frequencies is supplied to a two-coordinate direction coil arrangement of a position sensing tablet. The tuned circuit changes the current flowing in the coil arrangement at the implement resonant frequency. The current change is used to signal the implement position and characteristic. The implement may be an eraser for supplying a signal to an electronic display and for removing a mark from a surface of a visual display overlaying the tablet of the eraser. A housing includes a surface for erasing the marking and two tuned circuits each having a reactance positioned close to opposite edges of the erasing surface. Two switches, when activated, cause the tuned circuits to have different resonant frequencies. The switches are respectively activated when opposite eraser edges are being pushed against the display surface. The implement may also be one of a plurality of markers, each for a different color. Another display responds to the signals to display the position and colors of the markings and selectively remove markings from areas corresponding to the eraser position.
    • 确定具有多个谐振频率中的一个的具有调谐电路的器具的特性和位置。 将多个不同谐振频率的交流能量提供给位置检测图形输入板的两坐标方向的线圈排列。 调谐电路在器件谐振频率下改变在线圈装置中流动的电流。 当前的变化是用来表示工具的位置和特性。 该工具可以是用于向电子显示器提供信号并从覆盖橡皮片的视觉显示器的表面移除标记的橡皮擦。 壳体包括用于擦除标记的表面和每个具有靠近擦除表面的相对边缘定位的电抗的两个调谐电路。 两个开关在被激活时使调谐电路具有不同的谐振频率。 当相反的橡皮擦边缘被推压到显示表面时,开关分别被激活。 工具还可以是多个标记之一,每个标记各自用于不同的颜色。 另一显示器响应信号以显示标记的位置和颜色,并且从对应于橡皮擦位置的区域中选择性地移除标记。
    • 8. 发明授权
    • Electronic blackboard system marker and eraser therefor
    • 电子黑板系统标记和橡皮擦
    • US5134388A
    • 1992-07-28
    • US690317
    • 1991-04-25
    • Azuma MurakamiTsuguya YamanamiToshiaki SendaYoshiaki TomofujiSatoshi InashimaHiroshi Mizuno
    • Azuma MurakamiTsuguya YamanamiToshiaki SendaYoshiaki TomofujiSatoshi InashimaHiroshi Mizuno
    • G06F3/033G06F3/043G06F3/046G09B5/02G09B29/00G09F9/37
    • G06F3/043G06F3/033G06F3/046G09B29/001G09B5/02G09F9/375
    • A determination is made as to which one of plural objects is proximate a region having a coil therein. Each object includes a tuned circuit having a different resonant frequency. AC energy at the different resonant frequencies is supplied to the coil. The tuned circuit on the particular object in the region having substantially the same resonant frequency as the AC energy supplied to the coil causes a change in the current flowing in the coil at the same resonant frequency. The change in the current flowing in the coil at the same resonant frequency is sensed. In response to the current change at the same resonant frequency the particular object having the tuned circuit with the same resonant frequency as the frequency of the applied AC energy is indicated with a phase detector arrangement responsive to the changed current flowing in the coil at the same resonant frequency and a reference wave at the same resonant frequency. The phase detector arrangement derives indications of the polarities of the phase of quadrature components of the changed current relative to the reference wave and indicates the durations of the polarities relative to predetermined values therefor.
    • 确定多个物体中的哪一个靠近其中具有线圈的区域。 每个物体包括具有不同谐振频率的调谐电路。 将不同谐振频率的交流能量提供给线圈。 在具有与提供给线圈的AC能量基本相同的谐振频率的区域中的特定物体上的调谐电路导致在相同共振频率下在线圈中流动的电流的变化。 感测到以相同谐振频率在线圈中流动的电流的变化。 响应于在相同共振频率下的电流变化,具有与所施加的AC能量的频率具有相同谐振频率的调谐电路的特定对象由相位检测器装置指示,该相位检测器布置响应于在线圈中流过的变化的电流 谐振频率和相同谐振频率下的参考波。 相位检测器装置导出相对于参考波的改变的电流的正交分量的相位的极性的指示,并且指示相对于其预定值的极性的持续时间。
    • 10. 再颁专利
    • Coordinates input apparatus
    • USRE33805E
    • 1992-01-28
    • US576050
    • 1990-08-31
    • Tsuguya YamanamiToshiaki SendaAzuma Murakami
    • Tsuguya YamanamiToshiaki SendaAzuma Murakami
    • G06F3/033G06F3/046
    • G06F3/046
    • A system for detecting the types and statuses of position designating devices is incorporated in a coordinates input apparatus having a tablet constituting a coordinates input section, a plurality of position designating devices of different types, and a position detecting circuit for driving the tablet and detecting positions at which coordinates are input by the position designating devices. The system has an antenna coil disposed around a coordinates input range of the tablet, and a tuning circuit disposed in each of the position designating devices for transmitting radio waves in response to an external signal at an individual frequency determined in accordance with the type of the corresponding position designating device. An AC signal of predetermined frequencies is applied to the antenna coil so that it transmits radio waves. The types and statuses of the position designating devices are detected by judging the condition of the position designating circuits from signals within the antenna coil while the transmission of the radio waves is suspended. With this system, the types and statuses of a plurality of position designating devices can be detected without having to connect the devices to other circuits via cords or provide them with complicated signal generating circuits and power sources such as batteries.