Abstract: In an example embodiment, a method of controlling a three-phase alternating current (AC) voltage source includes determining an error between a direct current (DC) bus voltage command and a detected DC bus voltage, the detected DC bus voltage being a part of an outer feedback loop, obtaining one of a virtual conductance or virtual resistance, the one of the virtual conductance or the virtual resistance being a part of an inner feedback loop relative to the outer feedback loop, regulate an output DC bus voltage based on the error and the one of the virtual conductance or the virtual resistance and controlling the three-phase AC voltage source based on the regulation of the output DC bus voltage.

Abstract: An entropy decoding apparatus includes an entropy decoding circuit, a pre-fetch circuit, and a context pre-load buffer. The pre-fetch circuit pre-fetches at least one candidate context for entropy decoding of a part of an encoded bitstream of a frame before the entropy decoding circuit starts entropy decoding of the part of the encoded bitstream of the frame. The context pre-load buffer buffers the at least one candidate context. When a target context actually needed by entropy decoding of the part of the encoded bitstream of the frame is not available in the context pre-load buffer, the context pre-load buffer instructs the pre-fetch circuit to re-fetch the target context, and the entropy decoding circuit stalls entropy decoding of the part of the encoded bitstream of the frame.

Abstract: A novel bi-directional vector modulator to be used as an active phase shifter is proposed. The advantages of the active phase shifter include: 1) Compact size—By active current combining technique, short transmission lines are used to perform signal combining rather than using area-consuming Wilkinson combiner or splitter; 2) High phase resolution and flexibility—phase interpolation can be performed by vector addition through m-path vector modulators; 3) High efficiency—no signal switch loss, only switched matching capacitor; 4) Simplified signal interconnection; 5) No passive combiner needed—eliminate large size and losses in the passive combiner); 6) Can have unequal combining and/or splitting by changing the gain of vector modulator, which is difficult to realize with passive combining and/or splitting network; and 7) Can combine different signals.

Abstract: A first inverter has a set of first output phases coupled to a grid voltage source. A second inverter has a set of second output phases coupled to the grid voltage source. A phase measurement device is adapted to measure at least one reference phase of the grid voltage source at a reference phase point. An electronic data processor is configured to determine an observed phase difference between the reference phase point and an observed position sample of one of a pulse-width-modulation carrier signal of the first inverter, the second inverter, or each parallel-coupled inverter. The electronic data processor is configured to determine a target phase difference between the reference phase point and target position sample of one of the pulse-width-modulation carrier signal.

Abstract: A bi-directional active combiner and splitter using bi-directional variable gain amplifiers (BD_VGAs) is proposed. Advantages of the proposed bi-directional active combiner and splitter includes the following 1) compact size—for each BD_VGA, cascode transistor pair is small and the same matching network is used by the cascode transistor pair for both directions; 2) high efficiency—no switching loss in signal path, only switched matching; 3) reduced passive trace loss and power consumption—simplified signal interconnection; 4) active current combining—eliminates large size in the passive combiner; 5) high input-output isolation—cascode and neutralization; 6) precise gain control and unequal combining or splitting—changing the gain of the BD_VGA; and 7) phase-invariant amplifier design.

Abstract: A housing of plastic strongly bonded to a metal frame is integrally formed as the housing of an electronic device. The metal frame includes at least one plastic grabbing recess to receive portion of a plastic member, an opening of the plastic grabbing recess carries convex teeth, the convex teeth narrow the opening of the plastic grabbing recess, and the convex teeth lock portions of the plastic member.

Abstract: A display device includes a plurality of gate lines, configured to output corresponding scan signals to corresponding pixels; a plurality of data lines, configured to receive display data and output corresponding pixel voltages to corresponding pixels, where the plurality of data lines includes 12 successive data lines from left to right; a gate driver, electrically coupled to the gate lines, configured to drive the pixels; and a data driver, electrically coupled to the data lines, configured to provide data signals to the pixels, where the data driver respectively provides data with polarities of: positive, negative, positive, negative, positive, negative, negative, positive, negative, positive, negative, and positive to the 12 data lines, and each column of pixels includes pixels in two forms; when the display data has a same gray scale, the data driver respectively provides two different pixel voltages to the pixels in two forms.

Abstract: An entropy decoding apparatus includes an entropy decoding circuit, a pre-fetch circuit, and a context pre-load buffer. The pre-fetch circuit pre-fetches at least one candidate context for entropy decoding of a part of an encoded bitstream of a frame before the entropy decoding circuit starts entropy decoding of the part of the encoded bitstream of the frame. The context pre-load buffer buffers the at least one candidate context. When a target context actually needed by entropy decoding of the part of the encoded bitstream of the frame is not available in the context pre-load buffer, the context pre-load buffer instructs the pre-fetch circuit to re-fetch the target context, and the entropy decoding circuit stalls entropy decoding of the part of the encoded bitstream of the frame.

Abstract: A video processing system includes a storage device, a receiving circuit, an audio/video demultiplexing circuit, a video decoder, and a display engine. The storage device includes a data buffer, a bitstream buffer, and a display buffer. An output of the receiving circuit is written into the data buffer. An input of the audio/video demultiplexing circuit is read from the data buffer, and an output of the audio/video demultiplexing circuit is written into the bitstream buffer. An input of the video decoder is read from the bitstream buffer, and an output of the video decoder is written into the display buffer. An input of the display engine is read from the display buffer. Each of the data buffer, the bitstream buffer, and the display buffer is a ring buffer.

Abstract: A housing of plastic strongly bonded to a metal frame is integrally formed as the housing of an electronic device. The metal frame includes at least one plastic grabbing recess to receive portion of a plastic member, an opening of the plastic grabbing recess carries convex teeth, the convex teeth narrow the opening of the plastic grabbing recess, and the convex teeth lock portions of the plastic member.

Abstract: An optical tracking system includes optical source devices. The optical source devices are configured to emitting optical signals. A control method, suitable for the optical tracking system, includes following operations. A dimensional scale to be covered by the optical tracking system is obtained. Signal strength of the optical signals provided by the optical source devices is adjusted according to the dimensional scale. The signal strength of the optical signals is positively correlated with the dimensional scale.

Abstract: An improved power system architecture for a hybrid electric vehicle includes a power control unit including a motor inverter, a generator inverter, and a DC-to-DC converter, and vehicle power management (VPM) circuitry directly connected to each of the motor inverter, generator inverter, and DC-to-DC converter. In this arrangement, communication timing is greatly reduced, thereby allowing for feedforward control of the motor inverter, generator inverter, and DC-to-DC converter. The feedforward control enables the VPM circuitry to predict current influx or draw by a motor and determine the corresponding currents to provide to or from the generator and battery prior to or simultaneously with the actual current influx or draw by the motor. This improves vehicle dynamics and responsiveness, as well as enables complete recapture of braking currents and eliminates the need for a brake chopper resistor, thereby improving overall vehicle efficiency.

Abstract: A medication management system includes a cabinet, at least one drawer unit, at least one positioning unit and at least one control unit. The at least one drawer unit has an engaging portion. The at least one positioning unit includes an engaging module that separably engages with the engaging portion of the at least one drawer unit, a drive module that is operable to disengage the engaging module from the engaging portion of the at least one drawer unit, and an actuator that actuates operation of the drive unit to disengage the engaging module from the engaging portion of the at least one drawer unit based on an opening signal. The control unit is electrically connected to the actuator for outputting the opening signal.

Abstract: A light emitting diode package includes a light emitting diode chip, a light conversion layer covering the light emitting diode chip, a reflecting layer surrounding the light emitting diode chip. The light emitting chip has a light output top surface, a first electrode and a second electrode. The first electrode and the second electrode are opposite to the light output top surface. The light emitting diode package further includes a supporting layer made of metal material. The supporting layer is mounted on a bottom surface of the reflecting layer facing away from the light output top surface and surrounds the light emitting chip and the light conversion layer.

Abstract: A novel reactive power overexcitation regulation technology for synchronous generator, comprises measuring a stator voltage, a stator current, an active power and a reactive power of the synchronous generator; calculating the allowable upper limit value of the reactive power of the generator according to the allowable stator current of stator heating, and calculating the allowable value of the reactive power of the minimum stator current of the generator according to the contact reactance between the generator and the grid; comparing the stator current with its allowable value, calculate the excess calorific value of the stator of the generator if the calculated actual stator current is larger than its allowable value, enter reactive power overexcitation limiting regulation mode if the excess calorific value of the generator reaches the upper limit of the allowable heating margin of the generator; and using the larger value between the allowable upper limit value of the reactive power and the allowable value

Abstract: An optical tracking system includes optical source devices. The optical source devices are configured to emitting optical signals. A control method, suitable for the optical tracking system, includes following operations. A dimensional scale to be covered by the optical tracking system is obtained. Signal strength of the optical signals provided by the optical source devices is adjusted according to the dimensional scale. The signal strength of the optical signals is positively correlated with the dimensional scale.

Abstract: A display panel includes a driver, X data lines, Y scan lines, and X*Y pixels. The driver is configured to receive display data with X*Y resolution. The X data lines are electrically connected to the driver and configured to receive a plurality of pixel voltages. The X*Y pixels are electrically connected to the data lines and the scan lines. When each gray level of a first color display data set is identical and lower than a first threshold value, the pixel voltages of the plurality of first color subpixels are not identical.

Abstract: A medication management system includes a cabinet, at least one drawer unit, at least one positioning unit and at least one control unit. The at least one drawer unit has an engaging portion. The at least one positioning unit includes an engaging module that separably engages with the engaging portion of the at least one drawer unit, a drive module that is operable to disengage the engaging module from the engaging portion of the at least one drawer unit, and an actuator that actuates operation of the drive unit to disengage the engaging module from the engaging portion of the at least one drawer unit based on an opening signal. The control unit is electrically connected to the actuator for outputting the opening signal.

Abstract: Techniques are disclosed relating to circuitry configured to perform reciprocal-based floating-point division. In some embodiments, floating-point circuitry includes reciprocal circuitry configured to generate a reciprocal of a divisor, multiplication circuitry configured to multiply the reciprocal results with a dividend, and circuitry configured to clear a least significant bit of an integer representation of the multiplication output to generate a modified multiplication output. The floating-point circuitry may be configured to convert the modified multiplication output to a representation using the first precision to generate a division output. In some embodiments, the refinement using the integer representation may provide correctly-rounded subnormal division results. The disclosed techniques may improve accuracy, reduce processing time, and/or reduce instructions needed for floating-point division, with little to no increase in chip area.

Abstract: An automatic wire arranging device includes a controller, at least one driving device electrically connected with the controller, a first wire clamping jig connected with the at least one driving device, a second wire clamping jig disposed to the first wire clamping jig, at least one charge-coupled device camera connected with the controller, and at least one puncher pin connected with the at least one driving device. The first wire clamping jig opens a plurality of first clamping slots. Each of the plurality of the first clamping slots opens a through-hole. The second wire clamping jig opens a plurality of second clamping slots. The at least one puncher pin is capable of penetrating through the through-hole and pushing against a core wire to be away from one of the plurality of the first clamping slots and be blocked in one of the plurality of the second clamping slots.