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    • 62. 发明授权
    • Hardware security device for magnetic memory cells
    • 磁性存储单元的硬件安全装置
    • US07224634B2
    • 2007-05-29
    • US10539795
    • 2003-12-15
    • Kars-Michiel Hubert LenssenAdrianus Johannes Maria DenissenNicolaas Lambert
    • Kars-Michiel Hubert LenssenAdrianus Johannes Maria DenissenNicolaas Lambert
    • G11C8/20
    • H01L23/57G11C11/16G11C11/1695H01L2924/0002H01L2924/00
    • The present invention provides a special structure of magnetic elements, e.g. MRAM elements, as a security device for IC's containing magnetic memory cells. In an example embodiment, the structure may comprise a combination of two or more associated magnetic elements with pre-set anti-parallel magnetization directions. By determining the polarisation directions of the magnetic elements, exposure to an external magnetic field can be detected. Inverse polarisation directions indicate a normal situation, aligned polarisation directions indicate that the MRAM-array has been exposed to an external field. In this way it can be detected whether a user has tried to erase or alter the data stored in the MRAM in an illegal way. The IC can regularly check the resistance of the security system during operation. Upon detection of a field exposure, the IC can erase all MRAM data, reset itself or, block its functioning.
    • 本发明提供了一种磁性元件的特殊结构。 MRAM元件作为包含磁存储单元的IC的安全装置。 在示例性实施例中,该结构可以包括具有预设的反并联磁化方向的两个或更多个相关联的磁性元件的组合。 通过确定磁性元件的极化方向,可以检测到暴露于外部磁场。 反偏振方向表示正常情况,对准偏振方向表示MRAM阵列暴露于外部场。 以这种方式,可以检测用户是否尝试以非法方式擦除或更改存储在MRAM中的数据。 IC可以在运行期间定期检查安全系统的电阻。 在检测到场曝光时,IC可以擦除所有MRAM数据,自身复位或阻止其功能。
    • 65. 发明申请
    • Hardware security device for magnetic memory cells
    • 磁性存储单元的硬件安全装置
    • US20060146597A1
    • 2006-07-06
    • US10539795
    • 2003-12-15
    • Kars-Michiel LenssenAdrianus DenissenNicolaas Lambert
    • Kars-Michiel LenssenAdrianus DenissenNicolaas Lambert
    • G11C11/00G11C11/14G11C11/15
    • H01L23/57G11C11/16G11C11/1695H01L2924/0002H01L2924/00
    • The present invention provides a special structure of magnetic elements, e.g. MRAM elements (10, 11), as a security device (30) for IC's containing magnetic memory cells. The structure may comprise a combination of two or more associated magnetic elements (10, 11) with pre-set anti-parallel magnetization directions. By determining the polarisation directions of the magnetic elements, exposure to an external magnetic field can be detected. Inverse polarisation directions indicate a normal situation, aligned polarisation directions indicate that the MRAM-array has been exposed to an external field. In this way it can be detected whether it has been tried to erase or alter the data stored in the MRAM in an illegal way. The IC can regularly check the resistance of the security system during operation. Upon detection of a field exposure, the IC can erase all MRAM data, or can reset itself or block its functioning.
    • 本发明提供了一种磁性元件的特殊结构。 MRAM元件(10,11),作为用于包含磁存储器单元的IC的安全装置(30)。 该结构可以包括具有预设的反并联磁化方向的两个或更多个相关联的磁性元件(10,11)的组合。 通过确定磁性元件的极化方向,可以检测到暴露于外部磁场。 反偏振方向表示正常情况,对准偏振方向表示MRAM阵列暴露于外部场。 以这种方式,可以检测是否以非法方式擦除或更改存储在MRAM中的数据。 IC可以在运行期间定期检查安全系统的电阻。 在检测到场曝光时,IC可以擦除所有的MRAM数据,或者可以自动复位或阻止其功能。
    • 66. 发明申请
    • Method and apparatus for managing power consumption of a disk drive
    • 用于管理磁盘驱动器的功耗的方法和装置
    • US20050251696A1
    • 2005-11-10
    • US10526872
    • 2003-08-08
    • Stephen CumpsonNicolaas Lambert
    • Stephen CumpsonNicolaas Lambert
    • G06F1/32G06F3/06G06F1/26
    • G06F1/3268G06F1/3203Y02D10/154
    • Consumer electronic devices that run on a battery or an accumulator—i.e. particularly portable applications such as mobile phones, laptops or MPEG players or recorders-require the management of power consumption. They consist essentially of a host and a storage medium like a disk or means for receiving a storage medium like a disk drive that are coupled with an interface. Power management is very important because long battery life enhances user convenience. According to the invention, it is determined whether it is more efficient either to leave the disk drive in the idle mode or to switch the drive to standby until the next data request appears. The disk drive is entered into the most efficient power mode. The time until the next request is determined by the host.
    • 在电池或蓄电池上运行的消费电子设备 - 特别是便携式应用,如手机,笔记本电脑或MPEG播放器或录像机,需要管理功耗。 它们基本上由主机和诸如磁盘的存储介质组成,或者用于接收诸如与接口耦合的磁盘驱动器的存储介质的装置。 电源管理非常重要,因为电池寿命长,增强了用户的便利性。 根据本发明,确定是否更有效地将磁盘驱动器置于空闲模式,或者将驱动器切换到待机直到下一个数据请求出现。 磁盘驱动器进入最有效的电源模式。 直到下一个请求的时间由主机确定。
    • 68. 发明授权
    • Voltage translator circuit
    • 电压转换电路
    • US06331797B1
    • 2001-12-18
    • US09447543
    • 1999-11-23
    • Nicolaas Lambert
    • Nicolaas Lambert
    • H03L500
    • H03K3/356113G09G3/2011G09G3/3685G09G2310/0259G09G2310/0289H03K3/012
    • A method and apparatus for translating a voltage control signal to switch a drive output, having a circuit with a pair of branches, each branch having a pull down device, respective branches receiving complementary components of the voltage control signal; a pull up device, in series with a respective pull down device, and each being driven by a positive feedback signal reflecting a state of conduction of the pull up device; and a current blocking device, in series with the pull up device, having a control input for impeding a current flowing in series to a respective pull down device. One current blocking device is controlled to selectively block a current flow through one of the branches, while permitting current flow through the other branch. The state of the voltage control signal is switched, current flow through both branches is resumed. In a preferred embodiment, the complementary components of the voltage control signal are formed with an inverter. A transmission gate is provided, having a pair of complementary inputs from the nodes between the pull up devices and pull down device in series, to modulate the optical state of a liquid crystal light modulating structure. The pull down devices, pull up devices, current blocking devices, inverter and complementary device transmission gate are each preferably formed in a silicon integrated circuit, with the liquid crystal light modulating structure formed on the surface.
    • 一种用于转换电压控制信号以切换具有一对分支的电路的驱动输出的方法和装置,每个分支具有下拉装置,各个分支接收电压控制信号的互补分量; 与各自的下拉装置串联的上拉装置,并且每个都由反映上拉装置的导通状态的正反馈信号驱动; 并且与上拉装置串联的电流阻塞装置具有用于阻止电流串联流向相应的下拉装置的控制输入。 控制一个电流阻挡装置以选择性地阻断通过一个分支的电流,同时允许电流流过另一个分支。 切换电压控制信号的状态,恢复通过两个分支的电流。 在优选实施例中,电压控制信号的互补分量由逆变器形成。 提供一个传输门,具有一对互补的输入,从上拉器件和下拉器件串联的节点,以调制液晶光调制结构的光学状态。 下拉装置,上拉装置,电流阻断装置,逆变器和互补装置传输门各自优选地形成在硅集成电路中,其中液晶光调制结构形成在表面上。