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    • 1. 发明授权
    • Image reconstruction data processing unit
    • 图像重建数据处理单元
    • US4941094A
    • 1990-07-10
    • US274997
    • 1988-10-12
    • Yusuke SattaYasuro Takiura
    • Yusuke SattaYasuro Takiura
    • G06T11/00
    • G06T11/006G06T2211/428Y10S378/901
    • An image reconstruction data processing unit of a simple structure which is capable of fast data processing by parallel operations of a plurality of fast processing units (FPU) is provided.The image reconstruction data processing unit according to the present invention comprises a plurality of FPUs and a single back projection unit (BPU) connected to the formers and is characterized in that the BPU includes a plurality of back projection execution parts corresponding to the FPUs, respectively, and a single pixel memory in which a total sum of output data from the back projection execution parts are stored in a back-projected state.
    • PCT No.PCT / JP88 / 00169 Sec。 371日期:1988年10月12日 102(e)日期1988年10月12日PCT提交1988年2月19日PCT公布。 第WO88 / 06321号公报 日期1988年8月25日。提供一种能够通过多个快速处理单元(FPU)的并行操作进行快速数据处理的简单结构的图像重建数据处理单元。 根据本发明的图像重建数据处理单元包括连接到成形器的多个FPU和单个背投影单元(BPU),其特征在于BPU分别包括对应于FPU的多个反投影执行部分 以及其中来自后投影执行部分的输出数据的总和以后投影状态存储的单个像素存储器。
    • 7. 发明授权
    • Received ultrasonic phase matching circuit
    • 接收超声波相位匹配电路
    • US5031625A
    • 1991-07-16
    • US555487
    • 1990-07-30
    • Takao HigashiizumiToru ShimazakiKeiki YamaguchiYasuro Takiura
    • Takao HigashiizumiToru ShimazakiKeiki YamaguchiYasuro Takiura
    • A61B8/00G01N29/24G10K11/34
    • G10K11/346
    • A received ultrasonic phase matching circuit of the present invention, which utilizes variable delay lines having short delay times as the structural element of variable focus means having a larger aperture and realizes focusing to the regions from the region near the surface of object and to the deeper region thereof, comprises variable attenuators to be controlled individually and variable delay lines having the equal maximum delay times also to be controlled individually to the respective receiving channels forming the maximum aperture for reception of the ultrasonic echoes to form variable aperture by controlling variable attenuators and distribution of delay times for focusing in the aperture using only the variable delay times belonging to such aperture and add and combine the receiving signals delayed by the variable delay lines in the beam steering means.
    • PCT No.PCT / JP89 / 00095 Sec。 371日期1990年7月30日 102(e)日1990年7月30日PCT 1989年1月30日PCT PCT。 出版物WO89 / 06933 日本1989年8月10日。本发明的接收超声波相位匹配电路,其利用具有较短延迟时间的可变延迟线作为具有较大孔径的可变焦点装置的结构元件,并实现对来自接近 物体表面和其较深的区域包括可单独控制的可变衰减器和具有相等的最大延迟时间的可变延迟线也被单独地控制到形成用于接收超声回波的最大孔径的各个接收通道以形成变量 通过控制可变衰减器的光圈和用于聚焦在光圈中的延迟时间的分布,仅使用属于这种孔径的可变延迟时间,并且将波长转向装置中延迟了可变延迟线的接收信号相加并组合。
    • 8. 发明授权
    • Two-wire signal transmission system
    • 双线信号传输系统
    • US3959772A
    • 1976-05-25
    • US587619
    • 1975-06-17
    • Yutaka WakasaHisayuki UchiikeKoju KataokaYasuro Takiura
    • Yutaka WakasaHisayuki UchiikeKoju KataokaYasuro Takiura
    • G08C19/22H04Q9/14
    • G08C19/22
    • A signal transmission system of the type used in process control systems for conveying a signal between a field telemetering instrument and a central controller, or between a central controller and a process control device. The signal transmission system is arranged with a transmitter accepting an input signal, a transmission line for carrying a transmission signal, and a receiver receiving the transmission signal and developing an output signal.In accordance with the invention, converter means in the transmitter develop a pulse width signal with a duration corresponding in a predetermined manner to the value of the input signal, and means in the transmitter provide the transmission signal (e.g., a current signal) with two states (e.g., opposite polarities), one of which has a duration corresponding to the duration of the pulse width signal. Means in the receiver provide the output signal with a duration corresponding to the duration of the one transmission signal state, which corresponds in turn to the value of the input signal, and can be used for conversion to digital or analog form. Means in one of the transmitter or receiver supplies power for the transmission signal, and means in the other of the transmitter or receiver derives operational power, e.g., for the telemetering instrument, from the transmission signal. The signal transmission system thus is able to convey signals with less susceptibility to noise, while at the same time retaining the ability to convey operational power.
    • 用于在现场遥测仪器和中央控制器之间或在中央控制器和过程控制装置之间传送信号的过程控制系统中使用的信号传输系统。 信号传输系统布置有接收输入信号的发射机,用于承载传输信号的传输线,以及接收发射信号的接收机和显影输出信号。