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公开(公告)号：US11232236B2
公开(公告)日：2022-01-25
申请号：US17048521
申请日：2019-04-18
申请人： Arm Limited
IPC分类号： H04L29/06 , G06F21/75 , G01R19/165 , G01R31/08 , G06F1/28 , G06F21/44 , H04L9/00 , H04L9/08 , H04L9/32 , G01R19/00 , G01R29/26
摘要： A method and authenticator for authenticating a device in a system using the electrical properties of the device is disclosed. Embodiments of the disclosure enable authentication by receiving a plurality of input seed values from a requestor. For each input seed value, load stimuli are generated to produce an electrical load sequence on a power delivery network powering at least part of the system. Noise induced in the power delivery network is measured in response to the electrical load sequence using one or more sensors located on the power delivery network. Based on the measured noise, a dynamic response property (magnitude and phase response as a function of frequency) of the power delivery network corresponding to a respective input seed value can be determined and returned to the requestor.
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公开(公告)号：US10964386B2
公开(公告)日：2021-03-30
申请号：US16496820
申请日：2018-03-26
申请人： Arm Limited
发明人： Wei Wang , Shidhartha Das
摘要： There is provided a system comprising: a storage device having a storage portion comprising a plurality of bitcells coupled to respective first signal lines and second signal lines and control logic to alter a memory state of the plurality of bitcells via the first signal lines and second signal lines; a memory controller coupled to the storage device to transmit one or more initialisation signals to the storage device; wherein the storage device is to initialise the storage portion over a clock cycle in response to the one or more initialisation signals.
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公开(公告)号：US20210064379A1
公开(公告)日：2021-03-04
申请号：US16556101
申请日：2019-08-29
申请人： Arm Limited
摘要： A method and architecture for performing multiply-accumulate operations in a neural network is disclosed. The architecture includes a crossbar having a plurality of non-volatile memory elements. A plurality of input activations is applied to the crossbar, which are then summed by binary weight encoding a plurality of the non-volatile memory elements to connect the input activations to weight values. At least one of the plurality of non-volatile memory elements is then precision programmed.
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公开(公告)号：US20200286557A1
公开(公告)日：2020-09-10
申请号：US16496820
申请日：2018-03-26
申请人： Arm Limited
发明人： Wei Wang , Shidhartha Das
IPC分类号： G11C13/00
摘要： There is provided a system comprising: a storage device having a storage portion comprising a plurality of bitcells coupled to respective first signal lines and second signal lines and control logic to alter a memory state of the plurality of bitcells via the first signal lines and second signal lines; a memory controller coupled to the storage device to transmit one or more initialisation signals to the storage device; wherein the storage device is to initialise the storage portion over a clock cycle in response to the one or more initialisation signals.
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35.发明申请公开(公告)号：US20200251152A1
公开(公告)日：2020-08-06
申请号：US16833154
申请日：2020-03-27
申请人： Arm Limited
摘要： Disclosed are methods, systems and devices for operation of memory device. In one aspect, volatile memory bitcells and non-volatile memory bitcells may be integrated to facilitate copying of memory states between the volatile and non-volatile memory bitcells.
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公开(公告)号：US10447412B2
公开(公告)日：2019-10-15
申请号：US15577487
申请日：2016-04-15
申请人： ARM LIMITED
IPC分类号： H04B7/24 , H04B13/00 , H04B1/3827
摘要： A device comprises a coupling configured to couple signals to and from a communications path including at least a part of a human or animal body; a data transmitter coupled to the coupling and configured to transmit, from time to time, a data signal of at least a predetermined temporal duration via the communications path; and a data receiver coupled to the coupling and configured to detect the presence of a signal on the communications path at sets of one or more successive detection instances disposed between successive transmissions of the data signal by the data transmitter, the data receiver being configured so that the successive detection instances of a set are temporally separated by no more than the predetermined temporal duration; the device being configured to initiate a processing operation in response to a detection by the data receiver of the presence of a signal on the communications path.
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公开(公告)号：US09933466B2
公开(公告)日：2018-04-03
申请号：US15172101
申请日：2016-06-02
申请人： ARM Limited
摘要： An apparatus and method are provided for detecting a resonant frequency giving rise to an impedance peak in a power delivery network used to provide a supply voltage. The apparatus includes resonant frequency detection circuitry that comprises test frequency control circuitry and a loading circuit. The test frequency control circuitry is arranged to generate control signals to indicate a sequence of test frequencies. A loading circuit is controlled by the control signals and operates from the supply voltage. In particular, in response to each test frequency indicated by the control signals, the loading circuit draws a duty-cycled current load through the power delivery network at that test frequency. Operation of the loading circuit produces a measurable property whose value varies in dependence on the supply voltage, thus enabling the resonant frequency to be determined from a variation in the value of that measurable property.
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公开(公告)号：US08862935B2
公开(公告)日：2014-10-14
申请号：US14143352
申请日：2013-12-30
申请人： ARM Limited
发明人： Shidhartha Das , David Michael Bull , Emre Ozer
IPC分类号： G06F11/00 , G06F11/07 , G06F11/16 , G06F11/10 , G01R31/3181
CPC分类号： G06F11/0793 , G01R31/31816 , G06F11/1076 , G06F11/1608
摘要： An integrated circuit is provided with error detection circuitry and error repair circuitry. Error tolerance circuitry is responsive to a control parameter to selectively disable the error repair circuitry. The control parameter is dependent on the processing performed within the circuit. For example, the control parameter may be generated in dependence upon the program instruction being executed, the output signal value which is in error, the previous behavior of the circuit or in other ways.
摘要翻译： 集成电路具有错误检测电路和错误修复电路。 误差容限电路响应于控制参数来选择性地禁用错误修复电路。 控制参数取决于电路内执行的处理。 例如，控制参数可以根据执行的程序指令，错误的输出信号值，电路的先前行为或其他方式来生成。
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公开(公告)号：US12118088B2
公开(公告)日：2024-10-15
申请号：US16855716
申请日：2020-04-22
申请人： Arm Limited
发明人： Subbayya Chowdary Yanamadala , Jeremy Patrick Dubeuf , Carl Wayne Vineyard , Matthias Lothar Boettcher , Hugo John Martin Vincent , Shidhartha Das
CPC分类号： G06F21/566 , G06F9/54 , G06F21/72 , G06F21/85 , G06F2221/034
摘要： A moderator system that can receive outputs of various stages of the security analytic framework and can receive input from external sources to provide information about emerging styles of attacks. One or more models/behavioral profiles can be curated by the moderator system, and the moderator system can provide updates to components of the security analytics framework.
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公开(公告)号：US11959950B2
公开(公告)日：2024-04-16
申请号：US17218670
申请日：2021-03-31
申请人： Arm Limited
发明人： Xiaoqing Xu , Zhiyao Xie , Shidhartha Das , Matthew James Walker , Kumara Guru Palaniswamy , Matthew Paul Elwood
IPC分类号： G01R21/133 , G01R31/317 , G05B13/02 , G05B15/02 , G05F1/66 , G06F30/3308 , G06F30/367 , G06F119/06
CPC分类号： G01R21/133 , G01R31/31727 , G05B13/02 , G05B15/02 , G05F1/66 , G06F30/3308 , G06F30/367 , G06F2119/06
摘要： A power meter for measuring power usage in a circuit includes preprocessor and a weighting network. The pre-processor is configured to receive toggle data for a number of power proxy signals in the circuit for a plurality of clock cycles of the circuit in a first time window. The power proxy signals and weighting values are determined automatically from simulated or emulated toggle data. For each power proxy signal, the pre-processor averages the toggle data over one or more clock cycles in one or more second time windows, within the first time window, to provide averaged toggle data, and outputs the averaged toggle data for each second time window. The weighting network is configured to combine the averaged toggle data from the power proxy signals, based on a set of weight values, to provide a measure of the power usage.
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