-
1.发明授权EEPROM memory matrix and method for safeguarding an EEPROM memory matrix 有权EEPROM存储器矩阵和用于保护EEPROM存储器矩阵的方法公开(公告)号：US07015821B2
公开(公告)日：2006-03-21
申请号：US10917232
申请日：2004-08-12
IPC分类号： G08B21/00
CPC分类号： G11C16/22
摘要： EEPROM memory matrix in which column lines are alternatively used as detector lines. A precharge voltage is applied to selected detector lines together with the relevant column line in each case before read-out of the memory columns. If a detector line loses its precharge level during the read-out of the memory cells, light incidence is assumed and a corresponding alarm function is triggered. Preferably column lines adjacent to the column lines that are respectively selected for the data transmission are connected as detector lines.
摘要翻译： EEPROM存储器矩阵，其中列线被替代地用作检测器线。 在读出存储器列之前，将预充电电压与每个情况下的相关列线一起施加到选定的检测器线。 如果检测器线在读出存储器单元期间失去其预充电电平，则假设发光，并触发相应的报警功能。 优选地，与分别被选择用于数据传输的列线相邻的列线作为检测器线连接。
-
2.发明授权Method for controlling the charging and discharging phases of a backup capacitor and a circuit configuration for carrying out the method 有权用于控制备用电容器的充电和放电阶段的方法以及用于执行该方法的电路配置公开(公告)号：US06859011B2
公开(公告)日：2005-02-22
申请号：US10431482
申请日：2003-05-06
IPC分类号： H02J7/00 , G06K19/07 , G06K19/073 , H02J1/00 , H02J9/06
CPC分类号： G06K19/073
摘要： A method for controlling the charging and discharging phases of a backup capacitor for a data storage medium has the step where the backup capacitor is first discharged to a defined voltage level before it is charged. The capacitor is discharged using a constant current. This ensures that the charging current for the backup capacitor cannot be used to identify what the charge-state of the capacitor was before discharging. Therefore, it is no longer possible to infer the currents that flowed during security-related arithmetic operations in a data processing unit. In one advantageous circuit configuration, a constant current source is formed by a current-mirror circuit, and a comparator is used to compare the voltage on the backup capacitor with a bandgap reference.
摘要翻译： 用于控制用于数据存储介质的备用电容器的充电和放电阶段的方法具有在充电之前首先将备用电容器放电到所定义的电压电平的步骤。 电容器使用恒定电流放电。 这确保了备用电容器的充电电流不能用于识别放电之前电容器的充电状态。 因此，不可能推断在数据处理单元中与安全相关的算术运算期间流动的电流。 在一个有利的电路结构中，恒流源由电流镜电路形成，并且比较器用于将备用电容器上的电压与带隙基准进行比较。
-
3.发明申请EEPROM memory matrix and method for safeguarding an EEPROM memory matrix 有权EEPROM存储器矩阵和用于保护EEPROM存储器矩阵的方法公开(公告)号：US20050036383A1
公开(公告)日：2005-02-17
申请号：US10917232
申请日：2004-08-12
CPC分类号： G11C16/22
摘要： EEPROM memory matrix in which column lines are alternatively used as detector lines. A precharge voltage is applied to selected detector lines together with the relevant column line in each case before read-out of the memory columns. If a detector line loses its precharge level during the read-out of the memory cells, light incidence is assumed and a corresponding alarm function is triggered. Preferably column lines adjacent to the column lines that are respectively selected for the data transmission are connected as detector lines.
摘要翻译： EEPROM存储器矩阵，其中列线被替代地用作检测器线。 在读出存储器列之前，将预充电电压与每个情况下的相关列线一起施加到选定的检测器线。 如果检测器线在读出存储器单元期间失去其预充电电平，则假设发光，并触发相应的报警功能。 优选地，与分别被选择用于数据传输的列线相邻的列线作为检测器线连接。
-
公开(公告)号：US06646503B2
公开(公告)日：2003-11-11
申请号：US10298833
申请日：2002-11-18
IPC分类号： H03F345
CPC分类号： G01R15/04 , G01R19/16542 , G11C29/02
摘要： A circuit configuration for detecting a functional disturbance has a first and a second differential amplifier. The outputs of the differential amplifiers are connected to the inputs of a gate. One input of the differential amplifiers is in each case connected to a reference potential terminal. The respective other input of the first and second differential amplifiers is connected to a monitoring means, which responds in the event of a change in the supply voltage at a supply potential terminal of the circuit configuration.
摘要翻译： 用于检测功能障碍的电路配置具有第一和第二差分放大器。 差分放大器的输出端连接到门的输入端。 每个差分放大器的一个输入端都连接到参考电位端子。 第一和第二差分放大器的相应另一个输入端连接到监视装置，该监视装置在电路配置的电源端子处的电源电压发生变化的情况下进行响应。
-
-
-
搜索结果
4 条记录 (耗时 0.011 秒)
