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    • 1. 发明授权
    • Stepping motor
    • 步进电机
    • US08288900B2
    • 2012-10-16
    • US12845112
    • 2010-07-28
    • Takeshi MatsunoYoshiya YamamuraHiroaki ItahashiShigeki MiyajiYukihiro Terada
    • Takeshi MatsunoYoshiya YamamuraHiroaki ItahashiShigeki MiyajiYukihiro Terada
    • H02K37/00
    • H02K37/14H02K1/145H02K2213/03
    • A stepping motor includes a rotor assembly and a stator assembly including two stator units axially coupled to each other. The two stator units each include a pair of yokes which each include a base portion and a plurality of pole teeth extending from the base portion and which are disposed such that each of the pole teeth of one yoke and each of the pole teeth of the other yoke are arranged alternately in the circumferential direction. The pole teeth are shaped symmetric and each include a pair of slant sides inclined so as to become closer to each other with an increase of distance from the base portion, and the slant sides of adjacent pole teeth are located close to each other wherein a magnetic pole gap between the adjacent pole teeth pole teeth is about 0.2 times as large as the thickness of the pole teeth.
    • 步进马达包括转子组件和定子组件,该定子组件包括彼此轴向耦合的两个定子单元。 两个定子单元各自包括一对轭,每个轭包括基部和从基部延伸的多个极齿,并且设置成使得一个轭的每个极齿和另一个轭的每个极齿 轭在圆周方向上交替布置。 极齿形状对称,并且每个包括一对倾斜侧面,其倾斜使得随着距离基部的距离的增加而彼此更接近,并且相邻极齿的倾斜侧面彼此靠近定位,其中磁性 相邻极齿极齿之间的极间距离是极齿的厚度的约0.2倍。
    • 3. 发明授权
    • Relative position measurement system using satellite
    • 卫星相对位置测量系统
    • US07450061B2
    • 2008-11-11
    • US11666255
    • 2004-11-10
    • Yukihiro TeradaKeiji ItoTakenori AbeTakashi Fujita
    • Yukihiro TeradaKeiji ItoTakenori AbeTakashi Fujita
    • G01S5/00
    • G01S19/43G01S19/04G01S19/14G01S19/35G01S19/44G01S19/51
    • A position measurement system for measuring displacement of an observation station viewed from a reference station by receiving radio waves from satellites by these stations, and performing relative position measurement between the stations, having: a short period displacement measurement section for measuring a short period displacement component in each of the stations through independent position measurement; a relative position computing section for performing relative position measurement between said stations; a long period position computing section for inputting a short period displacement component measured by the short period displacement measurement section, a relative position determined by the relative position computing section and an absolute position from the reference station, and determining the absolute position including a long period displacement component by removing the short period displacement component measured by each of the stations; and a radio communication device installed on each of the stations, for transmitting/receiving data to/from another station.
    • 一种位置测量系统,用于通过从这些站接收来自卫星的无线电波来测量从参考站观察的观测站的位移,并且进行站之间的相对位置测量,具有:用于测量短周期位移分量的短周期位移测量单元 在每个车站通过独立的位置测量; 相对位置计算部,用于在所述站之间执行相对位置测量; 用于输入由所述短周期位移测量部测量的短周期位移分量的长周期位置计算部,由所述相对位置计算部确定的相对位置和所述参考站的绝对位置,以及确定包括长周期 通过去除由每个站测量的短周期位移分量; 以及安装在每个站上的用于向/从另一个站发送/接收数据的无线电通信装置。
    • 5. 发明申请
    • THERMAL HEAD DRIVING CIRCUIT
    • 热头驱动电路
    • US20080180511A1
    • 2008-07-31
    • US11968261
    • 2008-01-02
    • Tomomitsu OoharaYukihiro Terada
    • Tomomitsu OoharaYukihiro Terada
    • B41J2/35
    • B41J2/35
    • A disclosed thermal head driving circuit includes an inverter type drive circuit including a p-channel MOS transistor and a first n-channel MOS transistor, and configured to have a driving signal of a rectangular wave provided at gates of the p-channel MOS transistor and the first n-channel MOS transistor to invert the driving signal; a power MOS transistor configured to have provided, at its gate, the inverted drive signal output from the inverter type drive circuit to drive a thermal head connected to its drain; a first resistance connected between a drain of the p-channel MOS transistor and a drain of the first n-channel MOS transistor; and a second resistance connected between a junction point between the first resistance and the drain of the first n-channel MOS transistor, and the gate of the power MOS transistor.
    • 公开的热敏头驱动电路包括:反相器型驱动电路,包括p沟道MOS晶体管和第一n沟道MOS晶体管,并且被配置为具有设置在p沟道MOS晶体管的栅极处的矩形波的驱动信号;以及 第一n沟道MOS晶体管反相驱动信号; 功率MOS晶体管,被配置为在其栅极处提供从逆变器型驱动电路输出的反相驱动信号,以驱动连接到其漏极的热敏头; 连接在p沟道MOS晶体管的漏极和第一n沟道MOS晶体管的漏极之间的第一电阻; 以及连接在第一n沟道MOS晶体管的第一电阻和漏极之间的接合点与功率MOS晶体管的栅极之间的第二电阻。
    • 7. 发明授权
    • Head amplifier circuit
    • 头放大器电路
    • US06411455B1
    • 2002-06-25
    • US09038075
    • 1998-03-11
    • Yukihiro TeradaAkira Ikeuchi
    • Yukihiro TeradaAkira Ikeuchi
    • G11B502
    • G11B5/02G11B5/016H03F3/72
    • A head amplifier circuit supplies a writing current, having a direction in accordance with recording information, to a head for recording information on a recording medium. The head amplifier circuit includes a reference voltage generating portion for generating a reference voltage, a constant current generating portion for generating a constant current based on the reference voltage generated by the reference voltage generating portion, and a grounding portion. During one period of time, the constant current generating portion supplies the constant current to a first end of the head and the grounding portion grounds a second end of the head. During another period of time, the constant current generating portion supplies the constant current to the second end of the head and the grounding portion grounds the first end of the head.
    • 头放大器电路将具有根据记录信息的方向的写入电流提供到用于在记录介质上记录信息的磁头。 头放大器电路包括用于产生参考电压的参考电压产生部分,用于基于由参考电压产生部分产生的参考电压产生恒定电流的恒流产生部分和接地部分。 在一段时间内,恒流产生部分将恒定电流提供给磁头的第一端,接地部分接地磁头的第二端。 在另一时间段期间,恒流产生部分将恒定电流提供给头部的第二端,并且接地部分接地头部的第一端。
    • 8. 发明授权
    • Secondary battery cell protection circuit
    • 二次电池单体保护电路
    • US06297619B1
    • 2001-10-02
    • US09393895
    • 1999-09-10
    • Yukihiro Terada
    • Yukihiro Terada
    • H02J700
    • H02J7/0031H02J2007/0037H02J2007/004
    • A secondary battery cell protection circuit protects a charge control FET, a discharge control FET, and a secondary battery cell from destruction due to use of a charger of greater than rated voltage to charge the secondary battery cell. The secondary battery cell protection circuit has a charger voltage detection circuit, a first charge circuit control circuit for cutting off a charge circuit when the charger voltage detection circuit detects a charger voltage in excess of a predetermined value, and a second charge control circuit for cutting off a charge circuit when the over-charge detection circuit detects a secondary battery cell charge voltage in excess of a predetermined value. When the charge control FET is OFF, a load voltage proportionate to the charge voltage of the charger appears at a −B terminal and is applied to the emitter of a transistor, activating the transistor. A current proportionate to the charge voltage of the charger then flows to the transistor. If at this time the charger voltage is above the rated voltage, then a resistor is set so that a voltage drop of the resistor exceeds a base voltage. As a result, when the charger voltage is above the rated voltage the charge voltage of the secondary battery cell declines thereafter and a charge control FET drive transistor remains in an OFF state even after the charge voltage is at or below a release charge voltage.
    • 二次电池单元保护电路保护充电控制FET,放电控制FET和二次电池单元免受使用大于额定电压的充电器的破坏,以对二次电池单元充电。 二次电池单元保护电路具有充电器电压检测电路,当充电器电压检测电路检测到超过预定值的充电器电压时,用于切断充电电路的第一充电电路控制电路和用于切断充电电压的第二充电控制电路 当过充电检测电路检测到超过预定值的二次电池单元充电电压时,关闭充电电路。 当充电控制FET为OFF时,与B充电器的充电电压成比例的负载电压出现在-B端子处,并施加到晶体管的发射极,激活晶体管。 与充电器的充电电压成比例的电流然后流到晶体管。 如果此时充电器电压高于额定电压,则设置电阻器使得电阻器的电压降超过基极电压。 结果,当充电器电压高于额定电压时,二次电池单元的充电电压此后下降,并且充电控制FET驱动晶体管即使在充电电压处于或低于释放充电电压之后也保持在截止状态。
    • 9. 发明授权
    • Motor driving circuit
    • 电机驱动电路
    • US6104150A
    • 2000-08-15
    • US46825
    • 1998-03-24
    • Tomomitsu OoharaYukihiro Terada
    • Tomomitsu OoharaYukihiro Terada
    • H02P6/00H02P6/08H02P7/06H02P8/00
    • H02P6/08H02P6/28
    • A motor driving circuit controls driving currents to be supplied to stator coils of a plurality of phases so as to supply the driving currents to the stator coils in sequence so as to generate a rotating magnetic field. The interaction between the rotating magnetic field generated by the stator coils and a magnetic field generated by a magnet of a rotor causes the rotor to rotate with respect to the stator coils. The motor driving circuit includes a driving circuit for supplying the driving currents to the stator coils, respectively; and a preventing circuit for preventing the driving means from supplying the driving currents to the stator coils in sequence.
    • 电动机驱动电路控制供给多相的定子线圈的驱动电流,以便依次向定子线圈提供驱动电流,以产生旋转磁场。 由定子线圈产生的旋转磁场与由转子的磁体产生的磁场之间的相互作用使转子相对于定子线圈旋转。 马达驱动电路包括分别向定子线圈提供驱动电流的驱动电路; 以及用于防止驱动装置依次向定子线圈提供驱动电流的防止电路。
    • 10. 发明授权
    • Headphone stereo control circuit
    • 耳机立体声控制电路
    • US5850459A
    • 1998-12-15
    • US879634
    • 1997-06-20
    • Hideaki AdachiYukihiro Terada
    • Hideaki AdachiYukihiro Terada
    • G11B15/00H04R5/033H04R5/04H04R1/10
    • H04R5/04H04R5/033
    • A headphone stereo control circuit includes a pre-power amplifier IC 1 wherein a motor speed control circuit 2, a motor driving transistor 3, a pre-amplifier 4 and a main amplifier 5 are mounted. In the headphone stereo control circuit, a headphone motor 6 is connected to the motor output pin P1of the motor driving transistor 3; a stereo head to the stereo head input pin P2 of the pre-amplifier 4; a tuner circuit 8 to the tuner input pin P3 of the main amplifier 5; and a speaker 9 to the main amplifier output pin P4 of the main amplifier 5. Further, a pin P8 for common use in effecting pre-amplifier.speed control is provided, the pin for common use being capable of applying supply voltage simultaneously to the motor speed control circuit 2 and the pre-amplifier 4, so that the supply voltage is supplied via a single-pole change-over switch 12 to the pin P8 for common use in effecting pre-amplifier.speed control.
    • 耳机立体声控制电路包括其中安装有电动机速度控制电路2,电动机驱动晶体管3,前置放大器4和主放大器5的前置功率放大器IC 1。 在耳机立体声控制电路中,耳机电动机6连接到电动机驱动晶体管3的电动机输出销P1; 立体声头到前置放大器4的立体声头输入引脚P2; 调谐器电路8连接到主放大器5的调谐器输入引脚P3; 以及扬声器9连接到主放大器5的主放大器输出引脚P4。此外,提供用于实现前置放大器速度控制的通用引脚P8,用于常用的引脚能够同时向 电机速度控制电路2和前置放大器4,使得电源电压通过单极转换开关12提供给引脚P8,以用于实现前置放大器速度控制。