公开(公告)号：US09031736B2

公开(公告)日：2015-05-12

申请号：US14150738

申请日：2014-01-08

申请人： Rohit Tomar ,  Prashant Bhargava ,  Neha Jain ,  Matthew B. Ruff

发明人： Rohit Tomar ,  Prashant Bhargava ,  Neha Jain ,  Matthew B. Ruff

IPC分类号： G06F7/00 ,  G07C5/00 ,  G01P15/125 ,  H02M1/36 ,  H04L7/04

CPC分类号： G07C5/00 ,  G01P15/125 ,  H02M1/36 ,  H04L7/044

摘要： A system for performing diagnostic checks on a data message transmitted from a sensor and received by a receiver includes a receiver clock tick counter, a prescaler counter, a calibration pulse detector, a nibble counter, and a calculator. The system receives first and second data messages transmitted from the sensor. Pulse widths of first and second calibration pulses of the first and second data messages, respectively, and lengths of the first and second data messages are measured using the receiver clock tick, prescaler, and nibble counters based on a compensated receiver clock signal. Thereafter, the pulse widths of the first and second calibration pulses and the lengths of the first and second data messages are compared using the calculator to perform the diagnostic checks.

摘要翻译： 用于对从传感器发送并由接收器接收的数据消息进行诊断检查的系统包括接收机时钟计数器，预分频器计数器，校准脉冲检测器，半字节计数器和计算器。 系统接收从传感器发送的第一和第二数据消息。 第一和第二数据消息的第一和第二校准脉冲的分别为第一和第二数据消息的长度的脉冲宽度使用接收器时钟tick，预分频器和半字节计数器基于经补偿的接收机时钟信号来测量。 此后，使用计算器比较第一和第二校准脉冲的脉冲宽度以及第一和第二数据消息的长度以执行诊断检查。

公开(公告)号：US20130345924A1

公开(公告)日：2013-12-26

申请号：US13530085

申请日：2012-06-21

申请人： Rohit Tomar ,  Prashant Bhargava ,  Neha Jain ,  Matthew B. Ruff

发明人： Rohit Tomar ,  Prashant Bhargava ,  Neha Jain ,  Matthew B. Ruff

IPC分类号： G06F19/00 ,  H04B17/00

CPC分类号： G07C5/00 ,  G01P15/125 ,  H02M1/36 ,  H04L7/044

摘要： A system for performing diagnostic checks on a data message transmitted from a sensor and received by a receiver includes a receiver clock tick counter, a prescaler counter, a calibration pulse detector, a nibble counter, and a calculator. The system receives first and second data messages transmitted from the sensor. Pulse widths of first and second calibration pulses of the first and second data messages, respectively, and lengths of the first and second data messages are measured using the receiver clock tick, prescaler, and nibble counters based on a compensated receiver clock signal. Thereafter, the pulse widths of the first and second calibration pulses and the lengths of the first and second data messages are compared using the calculator to perform the diagnostic checks.

摘要翻译： 用于对从传感器发送并由接收器接收的数据消息进行诊断检查的系统包括接收机时钟计数器，预分频器计数器，校准脉冲检测器，半字节计数器和计算器。 系统接收从传感器发送的第一和第二数据消息。 第一和第二数据消息的第一和第二校准脉冲的分别为第一和第二数据消息的长度的脉冲宽度使用接收器时钟tick，预分频器和半字节计数器基于经补偿的接收机时钟信号来测量。 此后，使用计算器比较第一和第二校准脉冲的脉冲宽度以及第一和第二数据消息的长度以执行诊断检查。

公开(公告)号：US20140121886A1

公开(公告)日：2014-05-01

申请号：US14150738

申请日：2014-01-08

申请人： Rohit Tomar ,  Prashant Bhargava ,  Neha Jain ,  Matthew B. Ruff

发明人： Rohit Tomar ,  Prashant Bhargava ,  Neha Jain ,  Matthew B. Ruff

IPC分类号： G07C5/00

CPC分类号： G07C5/00 ,  G01P15/125 ,  H02M1/36 ,  H04L7/044

摘要： A system for performing diagnostic checks on a data message transmitted from a sensor and received by a receiver includes a receiver clock tick counter, a prescaler counter, a calibration pulse detector, a nibble counter, and a calculator. The system receives first and second data messages transmitted from the sensor. Pulse widths of first and second calibration pulses of the first and second data messages, respectively, and lengths of the first and second data messages are measured using the receiver clock tick, prescaler, and nibble counters based on a compensated receiver clock signal. Thereafter, the pulse widths of the first and second calibration pulses and the lengths of the first and second data messages are compared using the calculator to perform the diagnostic checks.

摘要翻译： 用于对从传感器发送并由接收器接收的数据消息进行诊断检查的系统包括接收机时钟计数器，预分频器计数器，校准脉冲检测器，半字节计数器和计算器。 系统接收从传感器发送的第一和第二数据消息。 第一和第二数据消息的第一和第二校准脉冲的分别为第一和第二数据消息的长度的脉冲宽度使用接收器时钟tick，预分频器和半字节计数器基于经补偿的接收机时钟信号来测量。 此后，使用计算器比较第一和第二校准脉冲的脉冲宽度以及第一和第二数据消息的长度以执行诊断检查。

公开(公告)号：US08645020B2

公开(公告)日：2014-02-04

申请号：US13530085

申请日：2012-06-21

申请人： Rohit Tomar ,  Prashant Bhargava ,  Neha Jain ,  Matthew B. Ruff

发明人： Rohit Tomar ,  Prashant Bhargava ,  Neha Jain ,  Matthew B. Ruff

IPC分类号： G01M17/00

CPC分类号： G07C5/00 ,  G01P15/125 ,  H02M1/36 ,  H04L7/044

摘要： A system for performing diagnostic checks on a data message transmitted from a sensor and received by a receiver includes a receiver clock tick counter, a prescaler counter, a calibration pulse detector, a nibble counter, and a calculator. The system receives first and second data messages transmitted from the sensor. Pulse widths of first and second calibration pulses of the first and second data messages, respectively, and lengths of the first and second data messages are measured using the receiver clock tick, prescaler, and nibble counters based on a compensated receiver clock signal. Thereafter, the pulse widths of the first and second calibration pulses and the lengths of the first and second data messages are compared using the calculator to perform the diagnostic checks.

摘要翻译： 用于对从传感器发送并由接收器接收的数据消息进行诊断检查的系统包括接收机时钟计数器，预分频器计数器，校准脉冲检测器，半字节计数器和计算器。 系统接收从传感器发送的第一和第二数据消息。 第一和第二数据消息的第一和第二校准脉冲的分别为第一和第二数据消息的长度的脉冲宽度使用接收器时钟tick，预分频器和半字节计数器基于经补偿的接收机时钟信号来测量。 此后，使用计算器比较第一和第二校准脉冲的脉冲宽度以及第一和第二数据消息的长度以执行诊断检查。

公开(公告)号：US08447004B2

公开(公告)日：2013-05-21

申请号：US13020815

申请日：2011-02-04

申请人： Rohit Tomar ,  Prashant Bhargava

发明人： Rohit Tomar ,  Prashant Bhargava

IPC分类号： H04L7/00

CPC分类号： H04L7/0331 ,  H04L7/044

摘要： A method and system for estimating and compensating for variation between a receiver clock and a transmitter clock, where a receiver utilizes a high frequency clock signal to generate a receiver clock and then adjusts the receiver clock to compensate for variations between the receiver and transmitter clocks. The adjusted receiver clock is used to sample nibble pulses in a received data frame. Counter based compensation of the receiver clock eliminates the need for the receiver to perform floating point calculations, improves the accuracy of nibble pulse sampling and also reduces area and power consumption of the device.

摘要翻译： 一种用于估计和补偿接收机时钟和发射机时钟之间的变化的方法和系统，其中接收机利用高频时钟信号来产生接收机时钟，然后调整接收机时钟以补偿接收机和发射机时钟之间的变化。 经调整的接收机时钟用于对接收到的数据帧中的半字节进行采样。 接收机时钟的基于计数器的补偿消除了接收机执行浮点计算的需要，提高了半字节脉冲采样的精度，并且还减少了器件的面积和功耗。

公开(公告)号：US08689357B2

公开(公告)日：2014-04-01

申请号：US13475947

申请日：2012-05-19

申请人： Mohit Arora ,  Rakesh Pandey ,  Pushkar Sareen ,  Prashant Bhargava

发明人： Mohit Arora ,  Rakesh Pandey ,  Pushkar Sareen ,  Prashant Bhargava

IPC分类号： G06F21/00

CPC分类号： G06F21/72 ,  G06F21/755

摘要： A tamper detector has input and output pins for connection to ends of a tamper detection circuit, and a corresponding set of linear feedback shift registers (LFSRs) timed by clock signals for generating pseudo-random coded detection signals as a function of seed values and of a generator polynomial defined by feedback taps. A comparator compares signals received from the detection circuit with the coded detection signals. A multiplexer provides the coded detection signal selectively from the LFSRs to the output pin and the comparator. A controller varies the seed values for different cycles of values of the pseudo-random coded detection signals. The controller also controls the generator polynomial and a frequency of the clock signals for different cycles of values of the pseudo-random coded detection signals.

摘要翻译： 篡改检测器具有用于连接到篡改检测电路的端部的输入和输出引脚和由时钟信号定时的对应的一组线性反馈移位寄存器（LFSR），用于产生作为种子值的函数的伪随机编码检测信号，以及 由反馈抽头定义的生成多项式。 比较器将从检测电路接收的信号与编码的检测信号进行比较。 复用器将选择性地从LFSR向编码的检测信号提供给输出引脚和比较器。 控制器改变伪随机编码检测信号的不同周期值的种子值。 控制器还控制生成多项式和针对伪随机编码检测信号的不同周期值的时钟信号的频率。

公开(公告)号：US20140353849A1

公开(公告)日：2014-12-04

申请号：US13905150

申请日：2013-05-30

申请人： Mohit Arora ,  Prashant Bhargava ,  Rishi Bhooshan

发明人： Mohit Arora ,  Prashant Bhargava ,  Rishi Bhooshan

IPC分类号： H01L23/00

CPC分类号： G06F21/86 ,  G06F2221/2143 ,  H01L23/573 ,  H01L2924/0002 ,  H01L2924/00

摘要： A system for generating a tamper detection signal indicating tampering with one or more circuits of an integrated circuit (IC) includes a tamper detection module, and wire-pairs connected to the tamper detection module and arranged in a winding configuration to form a wire-mesh. The wire-mesh is placed a predefined distance from the circuits. The tamper detection module generates and provides serial bit-streams to the wire-pairs for detecting a breach in the wire-mesh by an external probe.

摘要翻译： 用于产生表示篡改集成电路（IC）的一个或多个电路的篡改检测信号的系统包括篡改检测模块和连接到篡改检测模块并且以绕组配置布置以形成线网的线对 。 线网放置在与电路预定距离的位置。 篡改检测模块生成并提供串行比特流到线对，用于通过外部探针检测金属丝网中的突破。

公开(公告)号：US08843791B2

公开(公告)日：2014-09-23

申请号：US13759054

申请日：2013-02-05

申请人： Sarthak Mittal ,  Kshitij Bajaj ,  Prashant Bhargava

发明人： Sarthak Mittal ,  Kshitij Bajaj ,  Prashant Bhargava

IPC分类号： G06F11/00 ,  G06F11/07

CPC分类号： G06F11/073 ,  G06F11/0781 ,  G06F11/0787 ,  G11C7/1006 ,  G11C16/349 ,  G11C2029/0409

摘要： A memory error management system connected to memory channels for managing errors detected in corresponding memory devices includes a reporting table including a list of historically reported errors, a binary value representing the current error status of the memory channels, a uniqueness check module for checking whether a historically reported error is reappearing as a current error, an error mask register for generating a masked binary value representing unique current errors in the memory channels, and a channel arbitration module for decoding the channel identifiers of corrupted memory channels from the masked binary value and storing the decoded channel identifiers into the reporting table.

摘要翻译： 连接到存储器通道的存储器错误管理系统用于管理在对应存储器件中检测到的错误，包括报告表，其包括历史报告的错误列表，表示存储器通道的当前错误状态的二进制值，用于检查是否存在的唯一性检查模块 历史报告的错误正在作为当前误差重现，用于产生表示存储器通道中的唯一电流错误的掩蔽二进制值的误差掩码寄存器，以及用于从掩蔽的二进制值中解码损坏的存储器通道的通道标识符的通道仲裁模块， 将解码的信道标识符转换为报告表。

公开(公告)号：US20150186676A1

公开(公告)日：2015-07-02

申请号：US14145991

申请日：2014-01-01

申请人： Mohit Arora ,  Prashant Bhargava ,  Pradip Singh

发明人： Mohit Arora ,  Prashant Bhargava ,  Pradip Singh

IPC分类号： G06F21/64

CPC分类号： G06F21/725

摘要： A system for securing a real-time clock (RTC) of an electronic device includes a RTC counter that counts clock pulses of a RTC signal generated by a crystal oscillator, and a reference-time register that periodically stores a reference time value generated by a network-clock generator. A hash-value generator uses a predefined hash algorithm to generate first and second hash values based on the reference time value and the count of the RTC counter, respectively, at predetermined time intervals. A comparator compares the first and second hash values and generates a trigger signal when there is a mismatch.

摘要翻译： 用于保护电子设备的实时时钟（RTC）的系统包括对由晶体振荡器产生的RTC信号的时钟脉冲进行计数的RTC计数器和周期性地存储由 网络时钟发生器。 散列值生成器使用预定义的散列算法，以预定的时间间隔分别基于参考时间值和RTC计数器的计数来产生第一和第二散列值。 比较器比较第一和第二散列值，并且当存在不匹配时产生触发信号。

公开(公告)号：US20140223239A1

公开(公告)日：2014-08-07

申请号：US13759054

申请日：2013-02-05

申请人： Sarthak Mittal ,  Kshitij Bajaj ,  Prashant Bhargava

发明人： Sarthak Mittal ,  Kshitij Bajaj ,  Prashant Bhargava

IPC分类号： G06F11/07

CPC分类号： G06F11/073 ,  G06F11/0781 ,  G06F11/0787 ,  G11C7/1006 ,  G11C16/349 ,  G11C2029/0409

摘要： A memory error management system connected to memory channels for managing errors detected in corresponding memory devices includes a reporting table including a list of historically reported errors, a binary value representing the current error status of the memory channels, a uniqueness check module for checking whether a historically reported error is reappearing as a current error, an error mask register for generating a masked binary value representing unique current errors in the memory channels, and a channel arbitration module for decoding the channel identifiers of corrupted memory channels from the masked binary value and storing the decoded channel identifiers into the reporting table.

摘要翻译： 连接到存储器通道的存储器错误管理系统用于管理在对应存储器件中检测到的错误，包括报告表，其包括历史报告的错误列表，表示存储器通道的当前错误状态的二进制值，用于检查是否存在的唯一性检查模块 历史报告的错误正在作为当前误差重现，用于产生表示存储器通道中的唯一电流错误的掩蔽二进制值的误差掩码寄存器，以及用于从掩蔽的二进制值中解码损坏的存储器通道的通道标识符的通道仲裁模块， 将解码的信道标识符转换为报告表。