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公开(公告)号：US12028069B2
公开(公告)日：2024-07-02
申请号：US17742112
申请日：2022-05-11
申请人： Kratos SRE, Inc.
发明人： Seth D. Cohen
摘要： Technologies are provided for generation of programmable pulse signals using inverse chaotic maps, without reliance on a clocking signal. Some embodiments of the technologies include an apparatus that can receive a sequence of bits having a defined number of bits, where the sequence of bits represent a desired continuous pulse signal having a programmable width in time-domain. The apparatus can also can receive a precursor continuous pulse signal having an arbitrary width in time-domain that fits within the dynamic range of the apparatus. The apparatus can generate the desired continuous pulse signal by transforming the precursor continuous pulse signal using the sequence of bits and an inverse chaotic map.
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公开(公告)号：US20230157550A1
公开(公告)日：2023-05-25
申请号：US17917487
申请日：2021-04-06
申请人： Kratos SRE, Inc.
IPC分类号： A61B5/00 , A61B5/01 , A61B5/1171 , G06V40/16 , G06V40/10
CPC分类号： A61B5/0077 , A61B5/015 , A61B5/1176 , G06V40/168 , G06V40/15
摘要： Systems and methods are provided to monitor vital signs from a plurality of subjects simultaneously and in real-time. The systems and methods can utilize visible video signal or infrared (IR) video signals, or both, defining respective sequences of frames representative of a scene including the plurality of subjects. The systems and methods can analyze digital images corresponding to respective frames in a sequence of frames to generate a time series of image values. In an aspect, the systems and methods can analyze the time series to identify a characteristic frequency representing a value of a vital signal that is oscillatory in nature.
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公开(公告)号：US20240129142A1
公开(公告)日：2024-04-18
申请号：US18478002
申请日：2023-09-29
申请人： Kratos SRE, Inc.
发明人： Seth D. Cohen
CPC分类号： H04L9/3278 , G06F21/44 , H04L9/001 , H04L9/08
摘要： Technologies are provided for clockless physically unclonable functions (PUFs) in reconfigurable devices. Embodiments of the disclosed technologies include processing circuitry configured to perform numerous operations. The operations can include receiving a challenge continuous pulse signal, and generating a response continuous pulse signal by iteratively extending the challenge continuous pulse signal in time-domain. In some configurations, the iteratively extending includes generating a next continuous pulse signal by operating on a prior continuous pulse signal according to a stretching function, and generating a second next continuous pulse width signal by operating on the next continuous pulse signal according to a folding function.
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公开(公告)号：US11726433B2
公开(公告)日：2023-08-15
申请号：US17858845
申请日：2022-07-06
申请人： Kratos SRE, Inc.
发明人： Seth D. Cohen
CPC分类号： G04F10/005 , H03K5/15 , H03M1/141 , H03M1/504
摘要： Technologies are provided for time-to-digital conversion without reliance on a clocking signal. The technologies include a clockless TDC apparatus that can map continuous pulse-widths to binary bits represented via an iterative chaotic map (e.g., tent map, Bernoulli shift map, or similar). The clockless TDC apparatus can convert separated pulses to a single asynchronous digital pulse that turns on when a sensor detects a first pulse and turns off when the sensor detects a second pulse. The asynchronous digital pulse can be iteratively stretched and folded in time according to the chaotic map. The clockless TDC can generate a binary sequence that represents symbolic dynamics of the chaotic map. The process can be implemented by using an iterative time delay component until a precision of the binary output is either satisfied or overwhelmed by noise or other structural fluctuations of the TDC apparatus.
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公开(公告)号：US11733364B2
公开(公告)日：2023-08-22
申请号：US17327403
申请日：2021-05-21
发明人： Seth D. Cohen , Aubrey Beal
CPC分类号： G01S13/106 , G01S7/282 , H03K3/037 , H03K5/01 , H03K2005/00078
摘要： Backend components for noise radar and techniques for operation of those components are provided. Some embodiments include noise radar apparatuses. A noise radar apparatus may include a first unit that generates a random signal or a broadband noise signal using asynchronous logic gates constituting the first unit. The noise radar apparatus also may include a second unit that generates a reference sequence using the generated random signal or the generated broadband noise signal. The second unit comprises at least one tapped delay line formed by second asynchronous logic gates having sampling functionality and storage functionality. The noise radar apparatus may further include a third unit that receives a return signal correlates the return signal and the reference sequence in nearly real-time using third asynchronous logic gates constituting the third unit.
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公开(公告)号：US11415947B2
公开(公告)日：2022-08-16
申请号：US16972915
申请日：2019-06-10
申请人： Kratos SRE, Inc.
发明人： Seth D. Cohen
摘要： Technologies are provided for time-to-digital conversion without reliance on a clocking signal. The technologies include a clockless TDC apparatus that can map continuous pulse-widths to binary bits represented via an iterative chaotic map (e.g., tent map, Bernoulli shift map, or similar). The clockless TDC apparatus can convert separated pulses to a single asynchronous digital pulse that turns on when a sensor detects a first pulse and turns off when the sensor detects a second pulse. The asynchronous digital pulse can be iteratively stretched and folded in time according to the chaotic map. The clockless TDC can generate a binary sequence that represents symbolic dynamics of the chaotic map. The process can be implemented by using an iterative time delay component until a precision of the binary output is either satisfied or overwhelmed by noise or other structural fluctuations of the TDC apparatus.
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公开(公告)号：US11811954B2
公开(公告)日：2023-11-07
申请号：US17572153
申请日：2022-01-10
申请人： Kratos SRE, Inc.
发明人： Seth D. Cohen
CPC分类号： H04L9/3278 , G06F21/44 , H04L9/001 , H04L9/08
摘要： Technologies are provided for clockless physically unclonable functions (PUFs) in reconfigurable devices. Embodiments of the disclosed technologies include processing circuitry configured to perform numerous operations. The operations can include receiving a challenge continuous pulse signal, and generating a response continuous pulse signal by iteratively extending the challenge continuous pulse signal in time-domain. In some configurations, the iteratively extending includes generating a next continuous pulse signal by operating on a prior continuous pulse signal according to a stretching function, and generating a second next continuous pulse width signal by operating on the next continuous pulse signal according to a folding function.
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公开(公告)号：US20230004124A1
公开(公告)日：2023-01-05
申请号：US17858845
申请日：2022-07-06
申请人： Kratos SRE, Inc.
发明人： Seth D. Cohen
摘要： Technologies are provided for time-to-digital conversion without reliance on a clocking signal. Some embodiments of the technologies include a clockless TDC apparatus that can map continuous pulse-widths to binary bits represented via an iterative chaotic map (e.g., tent map, Bernoulli shift map, or similar). The clockless TDC apparatus can convert separated pulses to a single asynchronous digital pulse that turns on when a sensor detects a first pulse and turns off when the sensor detects a second pulse. The asynchronous digital pulse can be iteratively stretched and folded in time according to the chaotic map. The clockless TDC can generate a binary sequence that represents symbolic dynamics of the chaotic map. The process can be implemented by using an iterative time delay component until a precision of the binary output is either satisfied or overwhelmed by noise or other structural fluctuations of the TDC apparatus.
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