A control method of multi-phase converters, wherein the multi-phase converter includes a plurality of switching circuits coupled in parallel between an input voltage and a load. The control method includes: comparing a feedback signal with a reference signal to generate a comparison signal, wherein the feedback signal is indicative of an output voltage provided to the load; determining the number of switching circuits for power operation based on the load current; detecting a period of the comparison signal; comparing the detected period of the comparison signal with a time threshold to determine whether a transient rise of load current has occurred; and getting all the switching circuits into power operation if a transient rise of load current is detected.

A feature detection system, the system comprising: at least one processor in operative communication with a signal source, said processor further comprising at least one non-transitory storage medium, wherein at least one non-transitory storage medium contains instructions configured to cause the processor to: apply a joint group sparse denoising and delay estimation approach to a signal received from said signal source; and output statistics regarding the signal, wherein the joint group sparse denoising and delay estimation approach comprises; using the following equation: $\left\{x^{*},{?}^{*}\right\}=\underset{x,?}{\mathrm{argmin}}\left\{\frac{1}{2}\underset{j=1}{\overset{M}{.Math.}}{.Math.y_j-x.Math.}_2^2+\underset{i=0}{\overset{N}{.Math.}}{?}_i{?}_i\left(D_i^{l_i}x\right)\right\}$
where: ?.sub.i are regularization functions; ?y?x?.sub.2.sup.2 is a data-fidelity term and, in embodiments, is chosen as the least-square term; l.sub.i are real numbers; D.sub.i are operators, which may be linear filters that can be written in matrix form; ?.sub.i are regularization parameters; and x*,?* represent estimates of at least one tr

A feature detection system, the system comprising: at least one processor in operative communication with a signal source, said processor further comprising at least one non-transitory storage medium, wherein at least one non-transitory storage medium contains instructions configured to cause the processor to: apply a joint group sparse denoising and delay estimation approach to a signal received from said signal source; and output statistics regarding the signal, wherein the joint group sparse denoising and delay estimation approach comprises; using the following equation: $\left\{x^{*},{?}^{*}\right\}=\underset{x,?}{\mathrm{argmin}}\left\{\frac{1}{2}\underset{j=1}{\overset{M}{.Math.}}{.Math.y_j-x.Math.}_2^2+\underset{i=0}{\overset{N}{.Math.}}{?}_i{?}_i\left(D_i^{l_i}x\right)\right\}$
where: ?.sub.i are regularization functions; ?y?x?.sub.2.sup.2 is a data-fidelity term and, in embodiments, is chosen as the least-square term; l.sub.i are real numbers; D.sub.i are operators, which may be linear filters that can be written in matrix form; ?.sub.i are regularization parameters; and x*,?* represent estimates of at least one tr

A control method of multi-phase converters, wherein the multi-phase converter includes a plurality of switching circuits coupled in parallel between an input voltage and a load. The control method includes: comparing a feedback signal with a reference signal to generate a comparison signal, wherein the feedback signal is indicative of an output voltage provided to the load; determining the number of switching circuits for power operation based on the load current; detecting a period of the comparison signal; comparing the detected period of the comparison signal with a time threshold to determine whether a transient rise of load current has occurred; and getting all the switching circuits into power operation if a transient rise of load current is detected.

A control method of multi-phase converters, wherein the multi-phase converter includes a plurality of switching circuits coupled in parallel between an input voltage and a load. The control method includes: comparing a feedback signal with a reference signal to generate a comparison signal, wherein the feedback signal is indicative of an output voltage provided to the load; determining the number of switching circuits for power operation based on the load current; detecting a period of the comparison signal; comparing the detected period of the comparison signal with a time threshold to determine whether a transient rise of load current has occurred; and getting all the switching circuits into power operation if a transient rise of load current is detected.

In certain aspects of the disclosure, a frequency monitor includes a counter configured to receive a monitored clock signal, to count a number of periods of the monitored clock signal over a predetermined time duration, and to output a count value corresponding to the number of periods of the monitored clock signal. The frequency monitor also includes a comparator configured to receive the count value from the counter, to receive an expected count value, to compare the count value from the counter with the expected count value, and to output a pass status signal or a fail status signal based on the comparison.

A method of determining a spectrum of energies of individual quanta of radiation received in a radiation detector is disclosed. Spectrum sensitive statistics are computed from a time series of digital observations from the radiation detector, defining a mapping from a density of amplitudes of the pulses to the spectrum sensitive statistics. The spectrum is determined by estimating the density of amplitudes of the pulses by applying an inversion of the mapping to the spectrum sensitive statistics. The statistics may be based on a first set of nonoverlapping time intervals of constant length L at least as long as a duration of the pulses without regard to entirety of clusters of the pulses; and a second set of nonoverlapping time intervals of constant length L1 less than L also without regard to entirety of clusters of the pulses. A method of estimating count rate is also disclosed.

A communication system includes a wireless interface including a transmitter, receiver, and a programmable device responsive to a communication signal to switch a communication mode in accordance with the communication signal. A module is coupled to the wireless interface and includes a processor and a memory coupled to the processor. The memory includes a protocol sensor configured to identify a given protocol for received information and employ a corresponding software protocol for further communications.

A monitor for a node of a time division multiple access (TDMA) data bus comprises a logic device configured to calculate a metric of bandwidth use of the TDMA data bus based on monitored signals transmitted by the node, compare of the metric of bandwidth calculated with an expected metric of bandwidth use for the node, determine that a babbling node failure has occurred in response to the metric of bandwidth calculated exceeding the expected metric of bandwidth use for the node, and issue a control signal to reset the node in response to a detected babbling node failure being determined.

A monitor for a node of a time division multiple access (TDMA) data bus comprises a logic device configured to calculate a metric of bandwidth use of the TDMA data bus based on monitored signals transmitted by the node, compare of the metric of bandwidth calculated with an expected metric of bandwidth use for the node, determine that a babbling node failure has occurred in response to the metric of bandwidth calculated exceeding the expected metric of bandwidth use for the node, and issue a control signal to reset the node in response to a detected babbling node failure being determined.