Patents by Inventor Martin Mallinson

Martin Mallinson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11411943
    Abstract: Methods and systems for facilitating authentication of a user with a plurality of applications are described. One method includes authenticating a user with a first secure application based on information received from a smart credential stored on a mobile device via a local wireless connection. The method includes obtaining a remote challenge from a remote authentication service and a mobile challenge, signing the mobile challenge with a private key, and transmitting a signed version of the mobile challenge, the remote challenge, and a public key to the mobile device. The method further includes receiving a signed version of the remote challenge and a certificate indicating validation of the mobile challenge, and transmitting the signed version of the remote challenge to the remote authentication service. Based on receiving an authentication result from the remote authentication service, access is granted to a remote secure application via the browser.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: August 9, 2022
    Assignee: Entrust Corporation
    Inventors: Michael Mallinson, Ian Reilly, Rathnavalli Jayaprakash, Martin Dale Lyness, Tim Gerlach
  • Patent number: 11392824
    Abstract: A self-clocking (or self-oscillating) modulator in signal processing, similar to a ?? modulator, with particular application in the design of neural networks based on such modulators is described. A system of multiple self-clocking modulators and supporting structures may be configured to perform a calculation similar to that of an analog computer, such as a neural network, at lower power and smaller size than a digital implementation. Such a system constructed using the present approach does not require a sequential solution, but rather converges on a solution in one step; unlike the typical prior art, it thus requires no clock and operates asynchronously in a manner similar to a conventional analog computer. The self-clocking modulator can function as a neuron in a neural network, receiving a sum-of-products signal and generating an output stream like that of a ?? modulator that represents this sum-of-products, potentially also including an activation function and offset.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: July 19, 2022
    Assignee: SiliconIntervention Inc.
    Inventors: A. Martin Mallinson, Christian Leth Petersen
  • Patent number: 11354237
    Abstract: A multiport memory in which one of the ports is analog rather than digital is described. In one embodiment, the analog port functions as a read-only port and the digital port functions as a write only port. This allows the data in the core memory to be applied to an analog signal, while retaining a digital port having access to the core memory for rapid storage of data. One potential use of such a multiport memory is as a bridge between a digital computer and an analog computer; for example, this allows a digitally programmed two-port memory to derive a sum-of-products signal from a plurality of analog input signals, and a plurality of such multiport memories to be used in an analog neural network such as a programmable neural net implementing analog artificial intelligence (AI).
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: June 7, 2022
    Assignee: SiliconIntervention Inc.
    Inventors: A. Martin Mallinson, Christian Leth Petersen
  • Patent number: 11349446
    Abstract: An apparatus and method for using the known phenomena of quantum gate tunneling in semiconductor transistors to define the DC state of a charge-coupled amplifier is described. A first stage in which the tunneling current is bipolar (by pairing PMOS and NMOS transistors) in combination with a second stage with a controlled common mode voltage that can be used to control the first stage tunneling current, and thus the common mode voltage at the input. This can be done without the use of additional elements that may degrade performance or power consumption, since the input devices both process the input signal and maintain the DC operating point of the circuit. The approach may be advantageously used not only in charge-coupled amplifiers as described herein, but also in other capacitively coupled circuits such as charge balancing analog to digital converters (ADCs) and digital to analog converters (DACs).
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: May 31, 2022
    Assignee: SiliconIntervention Inc.
    Inventor: A. Martin Mallinson
  • Patent number: 11271535
    Abstract: Improved performance of analog computers is obtained by utilizing a deliberate reduction in gain of the gain elements present in the analog computer. While a prior output of the circuit (if any) is present, the gain of the gain elements is reduced to a level that is low enough that the input signal cannot propagate through the circuit. The input signal is then changed to a new value, or set of values, while the gain of the gain elements remains reduced. Finally, the gain of the gain elements is increased to a level that is high enough to allow the input signal to propagate through the circuit, resulting in an output that is a solution to the problem represented by the analog computer.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: March 8, 2022
    Assignee: SiliconIntervention Inc.
    Inventor: A. Martin Mallinson
  • Publication number: 20220057991
    Abstract: Combinatorial logic circuits with feedback, which include at least two combinatorial logic elements, are disclosed. At least one of the combinatorial logic elements receives an external input (i.e., from outside the circuit), at least one of the combinatorial logic elements receives an input that is feedback of the circuit output, and at least one of the combinatorial logic elements receives an input that is neither an external input nor an output of the circuit but rather is from another of the combinatorial logic elements and thus only “implicit” to the circuit. No staticizers are needed; the logic circuits effectively create implicit equations to perform functions that were previously thought to require sequential logic. The combinatorial logic circuits result in a stable output (in some instances after a brief period of time) due to the implicit equations, rather than achieving stability from an explicit expression of some input to the circuit.
    Type: Application
    Filed: August 12, 2021
    Publication date: February 24, 2022
    Inventor: A. Martin Mallinson
  • Patent number: 11258453
    Abstract: A pipelined ADC that does not wait for the residue of a signal to settle to be delivered to the next stage of the pipeline, and thus passes signals to subsequent stages at faster than conventional speeds. A pipelined ADC is used that processes signals representing the boundaries of the search space. Thus, each stage does not necessarily receive the signal as pre-processed by the prior stage, but rather the search space boundaries as pre-processed by the prior stage. Reducing the “search space” of the ADC is equivalent to creating the residues in each step of a pipeline as in the prior art. An ADC operating in this fashion operates without error even if the residual search space boundary outputs from one state are presented to the next stage before the outputs have settled, and can run faster for a given power and bandwidth.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: February 22, 2022
    Assignee: SiliconIntervention Inc.
    Inventor: A. Martin Mallinson
  • Publication number: 20220014848
    Abstract: An apparatus and method for determining signals representative of events in the environment of a reactive transducer while being driven by a switching amplifier is disclosed. While the switching amplifier is in a zero voltage state, a signal capture circuit that is also in a zero voltage state is connected to the transducer for a relatively brief period of time during which a measurement is made of the residual current flow due to the inductance of the transducer. A prediction of the output signal is then subtracted from the signal measured across the transducer, reducing the overall range of the signal and increasing the relative size of the back-EMF signal compared to any remaining output signal. If desired, conventional echo cancellation can then be performed. The back-EMF signal can then be subjected to further processing by an analog-to-digital converter as known in the art.
    Type: Application
    Filed: July 10, 2021
    Publication date: January 13, 2022
    Inventor: A. Martin Mallinson
  • Patent number: 11211938
    Abstract: A digitally controlled oscillator (DCO) that generates an output frequency clock signal without drift and can be rapidly locked to an input or reference clock is described. A variable-modulus-fixed-increment form of DCO is configured to divide the frequency of a nominally fixed frequency oscillator. A constant is derived from the ratio of a fixed increment to the desired output frequency; this constant is multiplied by the frequency of the oscillator and the modulus adjusted to keep the ratio of the input clock and the output clock constant. The frequency of the oscillator is conveniently measured by counting the number of cycles between input cycles of a reference frequency. The oscillator must be greater in frequency than the expected output and is most accurate in cases where the reference frequency is low compared to the expected output frequency.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: December 28, 2021
    Assignee: ESS Technology, Inc.
    Inventor: A. Martin Mallinson
  • Publication number: 20210365766
    Abstract: An apparatus and method for creating data dependency in a neural network without the need for historical data or training is described. An “auxiliary path” that is adjacent to the main path of the neural network contains neurons that receive input data, creating non-linearity beyond that normally present in the network. The outputs of the neurons in the auxiliary path do not directly feed into the layers of neurons in the main path of the network as inputs, but instead are used to “adjust” the input weights to neurons in the main path by selecting which of existing, pre-determined weights are used for any given input. No training phase is required, and the weights in the network do not change, but instead existing paths are simply opened or closed to inputs depending upon the inputs, effectively altering the input weights to the neurons in the main path.
    Type: Application
    Filed: May 25, 2021
    Publication date: November 25, 2021
    Inventor: A. Martin Mallinson
  • Publication number: 20210330279
    Abstract: An improved method and apparatus for detecting and measuring one or more biometric parameters of a user using a computing device in conjunction with an electroacoustic (audio) transducer is described. A first mode in which the audio transducer produces sound is disabled, and the device is placed in a second mode of operation in which a biometric signal is recovered from the transducer using a “back” audio signal. The biometric signal may then be measured or analyzed. The first mode is disabled by temporarily creating a high impedance between circuitry producing the audio signal and the transducer, while the biometric parameter is measured. This allows for detection of the biometric event without the need for significant additional components or circuitry. The computing device may most conveniently be a smartphone, but the approach described herein may also be easily and usefully applied to tablets, laptop or desktop computers or other devices.
    Type: Application
    Filed: April 27, 2021
    Publication date: October 28, 2021
    Inventors: Dustin Dale Forman, Christian Leth Petersen, A. Martin Mallinson
  • Publication number: 20210336625
    Abstract: A digitally controlled oscillator (DCO) that generates an output frequency clock signal without drift and can be rapidly locked to an input or reference clock is described. A variable-modulus-fixed-increment form of DCO is configured to divide the frequency of a nominally fixed frequency oscillator. A constant is derived from the ratio of a fixed increment to the desired output frequency; this constant is multiplied by the frequency of the oscillator and the modulus adjusted to keep the ratio of the input clock and the output clock constant. The frequency of the oscillator is conveniently measured by counting the number of cycles between input cycles of a reference frequency. The oscillator must be greater in frequency than the expected output and is most accurate in cases where the reference frequency is low compared to the expected output frequency.
    Type: Application
    Filed: April 27, 2021
    Publication date: October 28, 2021
    Inventor: A. Martin Mallinson
  • Publication number: 20210288623
    Abstract: An apparatus and method for using the known phenomena of quantum gate tunneling in semiconductor transistors to define the DC state of a charge-coupled amplifier is described. A first stage in which the tunneling current is bipolar (by pairing PMOS and NMOS transistors) in combination with a second stage with a controlled common mode voltage that can be used to control the first stage tunneling current, and thus the common mode voltage at the input. This can be done without the use of additional elements that may degrade performance or power consumption, since the input devices both process the input signal and maintain the DC operating point of the circuit. The approach may be advantageously used not only in charge-coupled amplifiers as described herein, but also in other capacitively coupled circuits such as charge balancing analog to digital converters (ADCs) and digital to analog converters (DACs).
    Type: Application
    Filed: March 9, 2021
    Publication date: September 16, 2021
    Inventor: A. Martin Mallinson
  • Publication number: 20210281273
    Abstract: A pipelined ADC that does not wait for the residue of a signal to settle to be delivered to the next stage of the pipeline, and thus passes signals to subsequent stages at faster than conventional speeds is described. A pipelined ADC is used that processes signals representing the boundaries of the search space. Thus, each stage does not necessarily receive the signal as pre-processed by the prior stage, but rather the search space boundaries as pre-processed by the prior stage. Reducing the “search space” of the ADC is equivalent to creating the residues in each step of a pipeline as in the prior art. An ADC operating in this fashion operates without error even if the residual search space boundary outputs from one state are presented to the next stage before the outputs have settled, and can run faster for a given power and bandwidth.
    Type: Application
    Filed: March 8, 2021
    Publication date: September 9, 2021
    Inventor: A. Martin Mallinson
  • Patent number: 11081097
    Abstract: A system and method for passively balancing electroacoustic transducers so that sounds other than the transducer's output can be detected. A transducer producing audio output based upon an input audio signal can operate in reverse to produce a signal in response to the impact of external sound upon the transducer from another source. This “reverse” or “microphone” signal represents the sound from the other source. Transducers are operated in monophonic mode, each in opposite polarity to the other thus canceling out and leaving only the microphone signal created by the transducers, i.e., a signal representing the external sound. The microphone signal can be amplified, and can be filtered and processed to identify and/or obtain various types of information about the sound received by the transducers.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: August 3, 2021
    Assignee: ESS Technology, Inc.
    Inventors: Christian Leth Petersen, Shawn William Scarlett, A. Martin Mallinson
  • Publication number: 20210133551
    Abstract: A programmable impedance element consists of a plurality of nominally identical two-port elements, each two-port element having an impedance element and two switches, the two-port elements arranged in a chain fashion with a structured set of switches such that a range of impedances can be obtained from each cell by dynamically changing the connections between the impedance elements in the cell. The common cell is constructed by connecting the nominally identical two-port impedance elements in a way that the number of possible combinations of the impedance elements is reduced to the subset of all possible combinations that uses the minimum possible number of connections. This structure allows the creation of matched impedances using industry standard devices. The connections between impedance elements are switches that may be “field-programmable,” i.e., that may be set on the chip after manufacture and configured during operation of the circuit, or alternatively may be mask programmable.
    Type: Application
    Filed: March 2, 2020
    Publication date: May 6, 2021
    Inventor: A. Martin Mallinson
  • Patent number: 10965311
    Abstract: Described herein is an improved apparatus for increasing the performance of a ?? modulator, which may function as an ADC. In one embodiment, the ?? modulator comprises a voltage to current converter, a capacitor connected between two outputs of the voltage to current converter to receive a differential input current, and a switch that can switch between connecting each output of the voltage to current converter to ground while disconnecting the other output of the voltage to current converter. In this embodiment, the ?? modulator has no common mode control loop, and no reference current. This results in decreased complexity, i.e., fewer components, as well as reduced noise.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: March 30, 2021
    Assignee: SiliconIntervention Inc.
    Inventor: A. Martin Mallinson
  • Patent number: 10965257
    Abstract: A signal processing circuit that achieves functionality similar to that of a switched capacitor circuit without the necessity a clock. The circuit compensates for finite open loop gain and for offset voltages in the components, allowing the circuit to “calculate” the result of a problem represented by the circuit essentially immediately upon the presentation of a new input or set of inputs. After the circuit is initialized to remove gain, an input is applied to the circuit, and propagates through the network and affects the state of amplifier outputs; the propagation from the input through capacitors to the ultimate output(s) of the circuit is the analog calculation taking place. The calculation is not mediated by a clock, but rather the calculation corresponds to the circuit's one-time response to the application of the inputs. Using these techniques complex signal processing circuits and even analog neural networks may be constructed.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: March 30, 2021
    Assignee: SiliconIntervention Inc.
    Inventor: A. Martin Mallinson
  • Publication number: 20210036665
    Abstract: A signal processing circuit that achieves functionality similar to that of a switched capacitor circuit without the necessity a clock. The circuit compensates for finite open loop gain and for offset voltages in the components, allowing the circuit to “calculate” the result of a problem represented by the circuit essentially immediately upon the presentation of a new input or set of inputs. After the circuit is initialized to remove gain, an input is applied to the circuit, and propagates through the network and affects the state of amplifier outputs; the propagation from the input through capacitors to the ultimate output(s) of the circuit is the analog calculation taking place. The calculation is not mediated by a clock, but rather the calculation corresponds to the circuit's one-time response to the application of the inputs. Using these techniques complex signal processing circuits and even analog neural networks may be constructed.
    Type: Application
    Filed: July 28, 2020
    Publication date: February 4, 2021
    Inventor: A. Martin Mallinson
  • Publication number: 20210005175
    Abstract: A system and method for passively balancing electroacoustic transducers so that sounds other than the transducer's output can be detected. A transducer producing audio output based upon an input audio signal can operate in reverse to produce a signal in response to the impact of external sound upon the transducer from another source. This “reverse” or “microphone” signal represents the sound from the other source. Transducers are operated in monophonic mode, each in opposite polarity to the other thus canceling out and leaving only the microphone signal created by the transducers, i.e., a signal representing the external sound. The microphone signal can be amplified, and can be filtered and processed to identify and/or obtain various types of information about the sound received by the transducers.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 7, 2021
    Inventors: Christian Leth Petersen, Shawn William Scarlett, A. Martin Mallinson