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    • 1. 发明授权
    • Radio channel control system for mobile radio telephone systems
    • 用于移动无线电话系统的无线电频道控制系统
    • US4163121A
    • 1979-07-31
    • US829061
    • 1977-08-30
    • Noriaki YoshikawaHitoshi KomagataYoshio Sato
    • Noriaki YoshikawaHitoshi KomagataYoshio Sato
    • H04M3/22H04M3/42H04W72/04H04W84/02H04Q7/00
    • H04M1/72508H04W84/042
    • In a mobile telephone system of the type in which the service area of the system is divided into a plurality of radio zones, mobile-system base stations are installed in respective radio zones, each mobile-system base station is connected to a mobile-system control unit through a common control channel and a plurality of speech channels, and the mobile-system control unit is connected to an existing telephone network via a mobile-system exchange unit, there are provided signal lines extending between the mobile-system base stations and the mobile-system control unit and between the mobile-system control unit and the mobile-system exchange unit and respectively combined with each of the speech channels. These signal lines are used to determine the state of the speech channels, and to transmit control and information signals.
    • 在将系统的服务区域划分为多个无线区域的类型的移动电话系统中,移动系统基站安装在各个无线区域中,每个移动系统基站连接到移动系统 控制单元通过公共控制信道和多个语音信道,并且移动系统控制单元经由移动系统交换单元连接到现有的电话网络,提供了在移动系统基站和 移动系统控制单元和移动系统控制单元与移动系统交换单元之间并分别与每个语音信道组合。 这些信号线用于确定语音信道的状态,并发送控制和信息信号。
    • 2. 发明授权
    • Ultrasonic imaging method and system capable of displaying B-mode image
and color flow mapping image over wide field
    • 超声波成像方法和系统能够在宽视场中显示B模式图像和色彩流映射图像
    • US5447158A
    • 1995-09-05
    • US77356
    • 1993-06-16
    • Hirotaka NakajimaNoriaki YoshikawaMasahiko Yano
    • Hirotaka NakajimaNoriaki YoshikawaMasahiko Yano
    • A61B8/06G01S7/52G01S15/89
    • G01S15/8979A61B8/06A61B8/13G01S7/52071G01S7/52085G01S15/8918G01S15/892G01S7/52063G01S7/52074
    • In ultrasonic imaging method/system, a deep interior portion of a biological body under medical examination can be scanned by blood-flow image scanning beams with a wide view field. The ultrasonic imaging system is arranged by a probe device having a probe plane for transmitting ultrasonic pulses to an interior portion of a biological body under medical examination, and for receiving ultrasonic echoes reflected from the interior portion of the biological body; a B-mode image scanning unit coupled to the probe means, for scanning the interior portion of the biological body by the ultrasonic pulses in a fan-shaped form as fan-shaped B-mode image scanning beams; a B-mode image producing unit for producing B-mode image data of the scanned interior portion from B-mode imaging echoes derived from the probe device, while scanning the interior portion by the fan-shaped B-mode image scanning beams; a blood-flow image scanning unit for scanning the interior portion by transmitting thereto the ultrasonic pulses as blood-flow image scanning beams from the probe plane at a predetermined inclined angle with respect to a normal line direction of the probe plane; a blood-flow image producing unit for producing blood-flow image data of the scanned interior portion from blood-flow imaging echoes derived from the probe means, while scanning the interior portion by the inclined blood-flow image scanning beams; and a dual-mode displaying unit for displaying both of a B-mode image of the scanned interior portion the a blood-flow image thereof in a dual mode by superimposing the blood-flow image data on the B-mode image data.
    • 在超声成像方法/系统中,可以通过具有宽视野的血流图像扫描光束来扫描体检下的生物体的深部内部。 超声波成像系统由具有探针平面的探针装置配置,用于在医学检查下将超声脉冲发送到生物体的内部,并且用于接收从生物体内部反射的超声回波; 耦合到探针装置的B模式图像扫描单元,用于通过扇形形式的超声波脉冲扫描生物体的内部作为扇形B模式图像扫描光束; B模式图像产生单元,用于通过扇形B模式图像扫描光束扫描内部部分,从由探测装置得到的B模式成像回波产生扫描内部部分的B模式图像数据; 血流图像扫描单元,用于以相对于探针平面的法线方向以规定的倾斜角度从所述探针平面传送超声波脉冲作为血流图像扫描光束来扫描所述内部; 血流图像产生单元,用于通过倾斜的血流图像扫描光束扫描内部部分,从由探测装置得到的血流成像回波产生扫描的内部部分的血流图像数据; 以及双模式显示单元,用于通过将血流图像数据叠加在B模式图像数据上,以双模式显示扫描的内部部分的B模式图像的血流图像。
    • 6. 发明申请
    • CONVERTER CONTROL CIRCUIT
    • 转换器控制电路
    • US20100072967A1
    • 2010-03-25
    • US12464172
    • 2009-05-12
    • Takashi KamishinbaraNoriaki Yoshikawa
    • Takashi KamishinbaraNoriaki Yoshikawa
    • G05F1/10
    • H02M3/158H02M2001/0048Y02B70/1491
    • There is provided a converter control circuit including: a high-side switching element connected between an input voltage terminal and an inductive load; a low-side switching element connected between the inductive load and a reference potential; a drive circuit configured to drive a gate of the switching elements; a drive switch connected to the gate of at least one of the switching elements in parallel with the drive circuit; and a drive switch control circuit switching the drive switch from ON to OFF when the gate voltage of the switching element with the gate connected to the drive switch reaches a prescribed threshold while the switching element is driven by the drive circuit.
    • 提供了一种转换器控制电路,包括:连接在输入电压端子和感性负载之间的高侧开关元件; 连接在感性负载和参考电位之间的低侧开关元件; 驱动电路,被配置为驱动所述开关元件的栅极; 驱动开关,其与所述驱动电路并联连接到所述至少一个所述开关元件的栅极; 以及当所述开关元件的栅极电压连接到所述驱动开关的栅极电压达到规定阈值时,所述驱动开关控制电路将所述驱动开关从ON切换到OFF,同时所述驱动电路驱动所述开关元件。
    • 8. 发明授权
    • Semiconductor device, with an off detection circuit
    • 半导体器件,具有断开检测电路
    • US07294992B2
    • 2007-11-13
    • US11531612
    • 2006-09-13
    • Noriaki Yoshikawa
    • Noriaki Yoshikawa
    • G05F1/613G05F1/656
    • H02M1/38H02M3/1588Y02B70/1466
    • According to the present invention, a semiconductor device is provided wherein a stepdown-type DC-DC converter includes a first off detection circuit, a second off detection circuit, a capacitor, a capacitor, a diode, inverters, an inductor, a first level shift circuit, a second level shift circuit, a third level shift circuit, a 2-input NAND circuit, a 2-input NAND circuit, a high-side N-channel power MOS transistor and a low-side N-channel power MOS transistor. The first off detection circuit and the second off detection circuit reduce fall times of the gates of the N-channel power MOS transistors, thereby reducing dead time.
    • 根据本发明,提供了一种半导体器件,其中降压型DC-DC转换器包括第一关断检测电路,第二关断检测电路,电容器,电容器,二极管,反相器,电感器,第一电平 移位电路,第二电平移位电路,第三电平移位电路,2输入NAND电路,2输入NAND电路,高侧N沟道功率MOS晶体管和低侧N沟道功率MOS晶体管 。 第一关断检测电路和第二关断检测电路减少N沟道功率MOS晶体管的栅极的下降时间,从而减少死区时间。
    • 9. 发明授权
    • Semiconductor device
    • 半导体器件
    • US07265526B2
    • 2007-09-04
    • US11513120
    • 2006-08-31
    • Noriaki Yoshikawa
    • Noriaki Yoshikawa
    • G05F1/40
    • H02M1/38H03K17/04206H03K17/165H03K2217/0036
    • According to this invention, there is provided a semiconductor device having conversion units which change the reference potential of an input signal to a first or second reference potential and outputs the input signal to a first drive unit or second drive unit, change the reference potential of a first control signal output from the first drive unit to the second reference potential and outputs the first control signal to the second drive unit, and changes the reference potential of a second control signal output from the second drive unit to the first reference potential and outputs the second control signal to the first drive unit, wherein the conversion units increase currents flowing through the conversion units on the basis of a time when the input signal changes.
    • 根据本发明,提供了一种具有将输入信号的参考电位改变为第一或第二参考电位的转换单元的半导体器件,并将输入信号输出到第一驱动单元或第二驱动单元,改变参考电位 从第一驱动单元输出到第二参考电位的第一控制信号,并将第一控制信号输出到第二驱动单元,并将从第二驱动单元输出的第二控制信号的参考电位改变为第一参考电位,并输出 所述第二控制信号到所述第一驱动单元,其中所述转换单元基于所述输入信号改变的时间来增加流过所述转换单元的电流。