专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07122899B2 Semiconductor device and production process 有权
公开(公告)号：US07122899B2
公开(公告)日：2006-10-17
申请号：US10133336
申请日：2002-04-26
申请人： Bernhard Lippmann , Stefan Wallstab , Günter Schmid , Rainer Leuschner
发明人： Bernhard Lippmann , Stefan Wallstab , Günter Schmid , Rainer Leuschner
IPC分类号： H01L23/45
CPC分类号： H01L23/576 , H01L28/20 , H01L29/41733 , H01L29/458 , H01L29/78618 , H01L2924/0002 , H01L2924/12044 , H01L2924/3011 , H01L2924/00
摘要： An ohmic resistance is present between two parts of a conductor layer so that the size of the ohmic resistance can be ascertained and/or a semiconductor region is present in or on a layer forming the dielectric. The conductor layer is structured into a gate contact, a source contact, and a drain contact so that a transistor function or switching function is possible in the semiconductor region. Such a configuration allows an attempt to analyze the circuit integrated in the chip to be detected.

2. 发明授权

US06933742B2 Chip card circuit with monitored access to a test mode 有权
标题翻译：芯片卡电路具有监控访问测试模式
公开(公告)号：US06933742B2
公开(公告)日：2005-08-23
申请号：US10197791
申请日：2002-07-18
申请人： Stefan Wallstab
发明人： Stefan Wallstab
IPC分类号： G01R31/317 , H03K19/00
CPC分类号： G01R31/31701
摘要： A circuit for monitoring an entry into a test mode of a chip circuit has a fusible link which can be fired via a firing transistor. A flipflop, which permits access to the test mode, is set by a resulting voltage drop, with the aid of an edge detector. The number of times the test mode has been accessed can be detected from the number of fired fusible links.
摘要翻译：用于监视进入芯片电路的测试模式的电路具有可通过点火晶体管触发的可熔链路。借助于边缘检测器，允许访问测试模式的触发器由所得到的电压降设置。测试模式被访问的次数可以从发射的熔丝链接的数量中检测出来。

3. 发明授权

US07739520B2 Data processing device 有权
标题翻译：数据处理装置
公开(公告)号：US07739520B2
公开(公告)日：2010-06-15
申请号：US10638659
申请日：2003-08-11
申请人： Helmut Horvat , Jan Otterstedt , Stefan Wallstab
发明人： Helmut Horvat , Jan Otterstedt , Stefan Wallstab
IPC分类号： G06F12/14
CPC分类号： H04N21/6334 , G06F15/7867 , G06F21/32 , G06F21/72 , G06F21/77 , H04N21/4181 , H04N21/4405
摘要： The invention relates to a data processing device with a functionally programmable logic circuit and a programming interface. An authorization control unit is provided, which protects the programming interface against an unauthorized access. This enables the functions of a semiconductor module to be changed in a customer-specific manner while preventing unauthorized entities from subsequently changing the functionality.
摘要翻译：本发明涉及具有功能可编程逻辑电路和编程接口的数据处理装置。提供授权控制单元，其保护编程接口免受未经授权的访问。这使得可以以客户特定的方式改变半导体模块的功能，同时防止未经授权的实体随后改变功能。

4. 发明授权

US06601202B2 Circuit configuration with deactivatable scan path 有权
标题翻译：电路配置具有可停用的扫描路径
公开(公告)号：US06601202B2
公开(公告)日：2003-07-29
申请号：US09820250
申请日：2001-03-28
申请人： Herbert Palm , Michael Smola , Stefan Wallstab
发明人： Herbert Palm , Michael Smola , Stefan Wallstab
IPC分类号： G01R3128
CPC分类号： G01R31/318536 , G01R31/31719 , G01R31/318544 , G01R31/318555
摘要： A circuit configuration with a deactivatable scan path, includes a number of function blocks each connected to at least one other of the function blocks. At least one sub-set of the connections is in the form of a respective interlocking element which can be switched through an activation line (Scan Enable) from a normal mode to a test mode and which has a further data input and data output. The further data inputs and outputs are connected to one another by data line sections in such a manner that the interlocking elements form a shift register which provides a scan path. At least one electrically programmable protection element, which either interrupts a given line or connects it to a defined potential, is disposed along the activation line (Scan Enable) and/or the data line sections.
摘要翻译：具有可去激活扫描路径的电路配置包括多个功能块，每个功能块连接到至少另一个功能块。连接的至少一个子集是各自互锁元件的形式，其可以通过激活线（扫描使能）从正常模式切换到测试模式，并且具有另外的数据输入和数据输出。另外的数据输入和输出通过数据线部分彼此连接，使得互锁元件形成提供扫描路径的移位寄存器。沿着激活线（扫描使能）和/或数据线部分设置至少一个电可编程保护元件，其中断给定线路或将其连接到限定的电位。

5. 发明授权

US07036018B2 Integrated security circuit 有权
公开(公告)号：US07036018B2
公开(公告)日：2006-04-25
申请号：US10199614
申请日：2002-07-19
申请人： Helmut Horvat , Stefan Wallstab
发明人： Helmut Horvat , Stefan Wallstab
IPC分类号： G06F11/30 , G06F12/14 , H04L9/32
CPC分类号： G07F7/1008 , G06Q20/341 , G07F7/1083
摘要： An integrated security circuit, for example, a microcontroller for smart cards, includes a function unit executing a security function. A control device determines the number of executions of the security function per unit of time. The continued execution of the security function is blocked when a threshold value is exceeded. For such a purpose, an analog timekeeper incorporating a charge storage device is preferably provided that measures the elapsing time even with the supply potential disconnected. A usage counter is updated whenever the security function is called. The security circuit offers increased protection against statistical attacks. The complexity involved in the implementation is justifiably low. The security circuit is compatible with the existing system.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式