Low-power complex analog LMS adaptation systems and methods
Granted: September 27, 2022
Patent Number:
11456898
LMS adaption systems and methods disclosed herein adaptively switch between modes of operation that selectively avoid using the imaginary part of an error signal, in effect, allowing for an LMS adaption that switches between utilizing only the real part of the error signal and utilizing the full complex error signal. Various embodiments take advantage of this added flexibility by implementing a dynamic power saving scheme that, for example, during times when high tracking performance…
Power control systems and methods for machine learning computing resources
Granted: September 20, 2022
Patent Number:
11449126
Described are context-aware low-power systems and methods that reduce power consumption in compute circuits such as commonly available machine learning hardware accelerators that carry out a large number of arithmetic operations when performing convolution operations and related computations. Various embodiments exploit the fact that power demand for a series of computation steps and many other functions a hardware accelerator performs is highly deterministic, thus, allowing for energy…
Method and circuit assembly for the resonance damping of stepper motors
Granted: September 6, 2022
Patent Number:
11437943
A method and a circuit arrangement for damping stepper motor resonances during operation of a stepper motor, in particular in the medium and high speed range, is described, wherein the coils of the stepper motor are each connected into a bridge circuit comprising semiconductor switches, in order to impress into the coils a predetermined target coil current. The resonance damping is achieved by activating a passive FD-phase in the zero crossing of the target coil current, during which all…
Chromatic dispersion equalizer adaption systems and methods
Granted: May 3, 2022
Patent Number:
11323184
Described herein are systems and methods that perform coarse chromatic dispersion (CD) compensation by applying precomputed coarse front-end equalizer (FEE) tap weights to a receiver based on an assumed propagation distance. After a waiting period, the FEE tap weights are applied, and it is determined whether the FEE tap weights cause a decision-directed tracking of channel rotations to satisfy a stability metric. In response to the stability metric not being satisfied, the assumed…
Intelligent current limiter for a computing device
Granted: May 3, 2022
Patent Number:
11320881
A mobile computing device includes one or more digital signal processors, each configured to receive a respective digital signal, one or more amplifiers, each configured to receive a respective digital signal, and one or more output generators configured to receive an output of a respective amplifier, and a battery configured to supply power to at least the amplifier(s). The digital signal processors include an intelligent current limiter. The intelligent current limiter is configured to…
Transistors drivers with fast shutdown-capability, and associated systems and methods
Granted: April 26, 2022
Patent Number:
11316510
A method for quickly shutting down a transistor in a switching circuit includes (a) generating a feedback signal associated with current flowing through the transistor, (b) transmitting the feedback signal through an isolating device to a controller, (c) detecting an over-current condition in the switching circuit without transmitting information through the isolating device, and (d) shutting-down the transistor in response to detecting the over-current condition, without transmitting…
LDMOS transistors including vertical gates with multiple dielectric sections, and associated methods
Granted: April 26, 2022
Patent Number:
11316044
A lateral double-diffused metal-oxide-semiconductor transistor includes a silicon semiconductor structure and a vertical gate. The vertical gate include a (a) gate conductor extending from a first outer surface of the silicon semiconductor structure into the silicon semiconductor structure and (b) a gate dielectric layer including a least three dielectric sections. Each of the at least three dielectric sections separates the gate conductor from the silicon semiconductor structure by a…
Temperature-based control of inductor demagnetization
Granted: April 19, 2022
Patent Number:
11309152
An integrated circuit for demagnetizing an inductive load includes a first switch to control current supplied by a voltage supply to the inductive load. A Zener diode includes an anode connected to a control terminal of the first switch and a cathode connected to the voltage supply. A second switch includes a control terminal and first and second terminals. A temperature sensing circuit is configured to sense a temperature of the first switch and to generate a sensed temperature. A…
Vertically structured pad system
Granted: April 5, 2022
Patent Number:
11296019
A vertically structured pad system and method can include: a platform having etch attributes, a platform top surface, and a platform side surface; a structure on the platform, the structure including a structure side surface extended up from the platform top surface terminating in a structure top surface, the structure including a structure interior surface defining a cavity within the structure, and the platform top surface exposed from within the cavity; and an interconnect structure…
Ultra-wide band frequency offset estimation systems and methods for analog coherent receivers
Granted: February 15, 2022
Patent Number:
11251766
Described herein are systems and methods that allow for correcting a residual frequency offset in the GHz frequency range by using low-complexity analog circuit implementations of a broad-band frequency detector that comprises two analog polyphase filters in a dual configuration. Each filter comprises an RC network of cross-coupled capacitors that facilitate filters with opposite passbands and opposite stop-bands. In various embodiments, the outputs of the two filters are combined to…
Dynamic error quantizer tuning systems and methods
Granted: February 1, 2022
Patent Number:
11239909
Dynamic error-quantizer tuning systems and methods prevent misconvergence to local minima by using a dynamic quantizer circuit that controls reference voltages of three or more comparators that are independently adjusted to modify the transfer function of the dynamic quantizer circuit. A weighted sum of the comparator outputs is subtracted from the input to form an error signal in a control loop. The ratio of the reference voltages is chosen to reduce or eliminate local minima during a…
Analog coherent signal processing systems and methods
Granted: January 25, 2022
Patent Number:
11233574
Real-time systems and methods prevent duplication of independent signal streams in a coherent receiver subject to source separation controlled by multiplicative coefficients under adaptive feedback control. In various embodiments, this is achieved by first obtaining a first set of coefficients associated with a first signal stream and a second set of coefficients associated with a second signal stream. In response to the sets of coefficients satisfying a condition, the first set modified…
Heat imaging thermophile device and method
Granted: December 14, 2021
Patent Number:
11199454
A temperature measurement footprint device, a mobile temperature measurement device, and a method for determining a temperature measurement footprint are described. In an implementation, a temperature measurement footprint device includes a thermopile configured to measure a temperature of an object; a camera configured to capture an image of the object, the camera disposed proximate to and in communication with the thermopile; and a light source configured to illuminate the object, the…
LDMOS transistors with breakdown voltage clamps
Granted: December 7, 2021
Patent Number:
11195909
A lateral double-diffused metal-oxide-semiconductor (LDMOS) transistor including a breakdown voltage clamp includes a drain n+ region, a source n+ region, a gate, and a p-type reduced surface field (PRSF) layer including one or more bridge portions. Each of the one or more bridge portions extends below the drain n+ region in a thickness direction. Another LDMOS transistor includes a drain n+ region, a source n+ region, a gate, an n-type reduced surface field (NRSF) layer disposed between…
Comparator diagnostic systems and methods
Granted: November 30, 2021
Patent Number:
11190175
An analog front-end circuit for self-calibrating a comparator, the circuit comprising a comparator in a comparator measurement path; a preamplifier coupled to the comparator by a set of switches; and an amplifier coupled to the preamplifier, the preamplifier receiving a reference signal as a first input and a user-definable reference as a second input, the user-definable reference generating a user-definable value chosen to create a known condition at an output of the preamplifier, the…
LED driver systems and methods
Granted: November 30, 2021
Patent Number:
11190103
Described herein are embodiments for systems and methods LED driver. In one or more embodiments, the LED driver may operate in a boost mode to charge a capacitor using a power source or in a boost mode to use the charged capacitor to provide current to a load, such as an LED string. In one or more embodiments, the LED driver uses a single inductor for boost mode operation or buck mode operation. Such embodiments simplify the LED driver and therefore provide an economic advantage. In one…
Charging device
Granted: November 30, 2021
Patent Number:
11190100
A charger device comprises a Single-Input-Multiple-Output (SIMO) device including a first transistor connected to an input and a first end of an inductor, a second transistor connected to ground and the first end of the inductor, a third transistor connected to a second end of the inductor and a first output, a fourth transistor connected to the second end of the inductor and a second output, and a controller connected to the SIMO device. The controller is configured to cause the SIMO…
Systems and methods for identifying polarization/quadrature channels in dual-polarization coherent optical transmission
Granted: November 23, 2021
Patent Number:
11184203
Described are systems and methods for identifying the phase and polarization of independent modulation streams in quadrature channels of a coherent transmission system by using digital code. As a result, phase rotation and polarization of streams that during transmission may have become rotated and swapped around in the channel are correctly labeled and depermuted according to a known and predictable order.
Coupled inductors for low electromagnetic interference
Granted: November 23, 2021
Patent Number:
11183328
A coupled inductor for low electromagnetic interference includes a plurality of windings and a composite magnetic core including a coupling magnetic structure formed of a first magnetic material and a leakage magnetic structure formed of a second magnetic material having a distributed gap. The coupling magnetic structure magnetically couples together the plurality of windings, and the leakage magnetic structure provides leakage magnetic flux paths for the plurality of windings.
Systems and methods for operating secure elliptic curve cryptosystems
Granted: November 9, 2021
Patent Number:
11171780
Various embodiments of the invention implement countermeasures designed to withstand attacks by potential intruders who seek partial or full retrieval of elliptic curve secrets by using Various embodiments of the invention implement countermeasures designed to withstand attacks by potential intruders who seek partial or full retrieval of elliptic curve secrets by using known methods that exploit system vulnerabilities, including elliptic operation differentiation, dummy operation…
