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    • 5. 发明申请
    • ACTIVE-MATRIX DISPLAY AND DRIVE METHOD THEREOF
    • 主动矩阵显示及其驱动方法
    • US20100073265A1
    • 2010-03-25
    • US12515680
    • 2008-05-21
    • Tadahiko HiraiJun SumiokaKaoru Okamoto
    • Tadahiko HiraiJun SumiokaKaoru Okamoto
    • G09G3/20
    • G09G3/3283G09G3/3241G09G3/325G09G2300/0861G09G2310/0251G09G2320/0285G09G2320/043
    • An active-matrix display includes a data line, at least one select line, a control unit supplying a voltage signal and a current signal to the data line, and a pixel circuit receiving the voltage signal and the current signal from the data line to drive a light emitting element, the control unit including a voltage or first current source supplying a voltage or current pulse to the data line in order to make the voltage holding unit hold the voltage signal for making the light emitting element emit light having predetermined brightness in a first selection period in which the first switch is closed, a second current source supplying the current signal for making the light emitting element emit light having the predetermined brightness to the data line in a second selection period in which the first switch and the second switch are closed, a detection circuit detecting potential held in the voltage holding unit in the second selection period, and a correction unit correcting the voltage signal based on a relationship between the current signal and the detected potential.
    • 有源矩阵显示器包括数据线,至少一个选择线,向数据线提供电压信号和电流信号的控制单元,以及从数据线接收电压信号和电流信号以驱动的像素电路 发光元件,所述控制单元包括向所述数据线提供电压或电流脉冲的电压或第一电流源,以使所述电压保持单元保持所述电压信号,以使得所述发光元件在所述发光元件中发射具有预定亮度的光 第一开关闭合的第一选择期间,在第一开关和第二开关为止的第二选择期间,向第一开关供给用于使发光元件发光的电流信号的第二电流源向数据线发射 关闭在第二选择期间保持在电压保持单元中的检测电路的检测电路和校正电压的校正单元 基于当前信号与检测电位之间的关系的信号。
    • 7. 发明申请
    • LIGHT EMITTING ELEMENT CIRCUIT AND DRIVE METHOD THEREOF
    • 发光元件电路及其驱动方法
    • US20080297056A1
    • 2008-12-04
    • US12127124
    • 2008-05-27
    • Tadahiko Hirai
    • Tadahiko Hirai
    • G09G3/00G06F3/038
    • G09G3/3241G09G2300/0408G09G2300/0842G09G2310/0262G09G2320/043
    • The present invention provides a light emitting element circuit that includes a current mirror circuit which includes two thin film transistors, two current input terminals and two output terminals, a capacitor for holding voltage corresponding to an electric current to be input from one of the two current input terminals, and a light emitting element connected to the current mirror circuit, and that supplies an electric current in accordance with the voltage held in the capacitor to the light emitting element through the current mirror circuit, wherein the two output terminals of the current mirror circuit are connected to the light emitting element, and the two current input terminals of the current mirror circuit are connected with each other through a switch in a time period other than a time period during which an electric current is input from the one of the two current input terminals.
    • 本发明提供了一种发光元件电路,其包括电流镜电路,其包括两个薄膜晶体管,两个电流输入端子和两个输出端子,用于保持对应于从两个电流之一输入的电流的电压的电容器 输入端子和连接到电流镜电路的发光元件,并且通过电流镜电路将依照电容器中保持的电压的电流提供给发光元件,其中电流镜的两个输出端 电路连接到发光元件,并且电流镜电路的两个电流输入端子通过开关在除二极管中的一个输入电流的时间段之外的时间段内彼此连接 电流输入端子。
    • 9. 发明申请
    • Unauthorized access prevention method
    • 未经授权的访问预防方法
    • US20060108416A1
    • 2006-05-25
    • US10538037
    • 2004-03-26
    • Tadahiko Hirai
    • Tadahiko Hirai
    • G06K5/00G06K19/06
    • G06K19/07363G06K19/073
    • An unauthorized access prevention method is provided for an integrated circuit including one or plural resistor elements capable of selecting between a high impedance state and a low impedance state irreversibly in an interface portion within the integrated circuit or a peripheral circuit portion. When a signal inconsistent with verification information and standard that are preset in the integrated circuit is received at least once, the impedance state of the resistor element is changed from an initial state to stop a part or all of accesses to the integrated circuit irreversibly. The unauthorized access prevention method is thus implemented by a simple structure manufactured with ease and at low cost.
    • 提供了一种用于集成电路的未经授权的访问防止方法,该集成电路包括能够在集成电路或外围电路部分中的接口部分中不可逆地在高阻抗状态和低阻抗状态之间选择的一个或多个电阻器元件。 当至少接收到与集成电路中预设的验证信息和标准不一致的信号时,电阻元件的阻抗状态从初始状态改变,以不可逆地停止对集成电路的部分或全部访问。 因此,通过以简单且低成本制造的简单结构来实现未授权的访问防止方法。
    • 10. 发明授权
    • Nonvolatile solid-state memory and method of driving the same
    • 非易失性固态存储器及其驱动方法
    • US06724651B2
    • 2004-04-20
    • US10112722
    • 2002-04-02
    • Tadahiko Hirai
    • Tadahiko Hirai
    • G11C1100
    • G11C11/15
    • The present invention is aimed at decreasing the current required for writing in a magnetic random access memory (MRAM), and power consumption thereof. In a magnetic random access memory of the present invention, information is written in memory elements arranged in a same row or column by performing once each of the first information writing step of applying a first magnetic field to put memory elements in the high-resistance state, and the second information writing step of applying a second magnetic field to the memory elements in which the first information has not been written to write information in all memory elements in the same row under recording of information. Alternatively, a magnetic random access memory includes a plurality of first wirings for applying a magnetic field in the direction of the easy magnetization axis of a magnetic layer, and a plurality of second wirings for applying a magnetic field in a direction inclined from the direction of the easy magnetization axis of the magnetic layer, wherein a current is passed through one of the second wirings to apply a magnetic field to all memory elements arranged in a same row or column of the rows or columns of a plurality of the memory cells arranged in parallel to the second wirings, and currents are passed through the plurality of first wirings in directions according to the information to be recorded in the respective memory elements synchronously with the current pulse passed through the second wiring to apply a magnetic field to each of the magnetoresistive elements, thereby recording information on the plurality of memory elements arranged in the same row or column.
    • 本发明旨在降低在磁随机存取存储器(MRAM)中写入所需的电流及其功耗。 在本发明的磁随机存取存储器中,通过执行第一信息写入步骤中的每一个,将信息写入到排列在同一行或列中的存储器元件中,以将第一磁场施加到高电阻状态 以及第二信息写入步骤,在记录信息的同一行的所有存储元件中,向尚未写入第一信息的存储元件施加第二磁场以写入信息。 或者,磁性随机存取存储器包括用于在磁性层的容易磁化轴方向上施加磁场的多个第一布线,以及多个第二布线,用于沿着从磁性层的方向倾斜的方向施加磁场 磁性层的容易的磁化轴,其中电流通过第二布线中的一个,以将布置在多个存储单元的行或列的同一行或列中的所有存储器元件施加磁场 平行于第二布线,并且电流根据要记录在各个存储元件中的信息的方向通过多个第一布线,与通过第二布线的电流脉冲同步,以向每个磁阻施加磁场 从而在布置在同一行或列中的多个存储元件上记录信息。