Abstract: A power conversion apparatus including a transformer, a power switch, a pulse width modulation (PWM) signal generator, an energy storage element, and a power circuit is provided. A primary winding of the transformer receives an input voltage from an external power source. An auxiliary winding of the transformer provides an auxiliary voltage. The power switch is coupled to the primary winding. The PWM signal generator generates a PWM signal to control on and off the power switch. The energy storage element is coupled to a power terminal of the PWM signal generator. The power circuit supplies power to the PWM signal generator and charges the energy storage element according to the auxiliary voltage. When a voltage of the energy storage element is greater than or equal to a threshold voltage, the power circuit stores backup power according to the auxiliary voltage.
Abstract: A shaft structure and an electronic device using the same are provided. The shaft structure includes a friction fixing member, a friction rotating member, a latch and a magnetic module. The friction fixture has a fixed wall. The friction rotating member has an elastic wall. The friction rotating member is inserted into the friction fixing member. The latch is inserted into the friction rotating member and pushed against the inner side of the elastic wall so that the elastic wall is expanded to push against the fixed wall of the friction fixing member. The magnetic module is configured to provide a magnetic repulsive force to the latch to push the latch against the elastic wall.
Abstract: An adjusting system and an adjusting method for equalization processing are provided. Frequency band energies of sound receiving signals are obtained. The frequency band energies correspond to different frequency bands, respectively. Target gains corresponding to frequency bands are determined according to the frequency band energies. Frequency responses of filtering processing with respect to a plurality of center frequencies are obtained. Equalization gains corresponding to the frequency bands and having the least gain error are determined. The gain error is related to a difference between the amplitude obtained after the equalization gains are reflected on the frequency responses corresponding to the filtering processing and the target gains. The equalization gains are inputted into the filtering processing according to the corresponding frequency bands. Accordingly, the impact of the filtering processing can be reduced.
Abstract: The disclosure provides a speech processing method and a device thereof. The method includes: acquiring a speech sampling signal frame in a mixed-excitation linear prediction (MELP) speech coding system and estimating signal quality of the speech sampling signal frame; determining, based on the signal quality, a specific linear prediction coding (LPC) order used by an LPC circuit; controlling the LPC circuit to convert the speech sampling signal frame into a line spectrum pair parameter based on the specific LPC order; replacing a speech signal spectrum of the speech sampling signal frame with the line spectrum pair parameter to generate a predicted speech signal; and performing a speech coding operation and a signal synthesizing operation of the MELP speech coding system based on the predicted speech signal.
Abstract: A correction system and a correction method of signal measurement are provided. In the method, a transmitted signal and a received signal are divided into a plurality of transmitted signal groups and a plurality of received signal groups according to a time length, respectively. The received signal is related to a signal received after the transmitted signal is transmitted, and the transmitted signal is a periodic signal. A plurality of to-be-evaluated groups are selected from the received signal groups according to a correlation between the transmitted signal groups and the received signal groups. The correlation corresponds to a delay between the transmitted signal and the received signal. The signal energy of the received signal is determined according to the signal energy of the to-be-evaluated groups. Accordingly, the accuracy of signal measurement can be improved.
Abstract: An electronic device includes a first body, a second body, a rotating shaft connected with the first body and the second body, at least one driving member, a third body and a flexible display. The first body and the second body rotate relatively to be folded or unfolded via the rotating shaft. The driving member is movably pivoted to the rotating shaft. The third body is movably disposed at the second body, the third body is located on a moving path of the driving member, and the third body and the driving member rotate relative to the first body to be folded or unfolded along with the second body. The flexible display is disposed at the first body and the third body, and the driving member drives the third body to move close to or away from the first body in a rotating folding or unfolding process.
November 25, 2020
March 18, 2021
Yen-Chou Chueh, Hui-Ping Sun, Wei-Chih Wang
Abstract: A portable electronic device including a first body, a second body, a first hinge connected to the first body, a second hinge connected to the second body, and a linking rod is provided. The linking rod has a first end and a second end opposite to each other, wherein the first end is pivoted to the first hinge eccentric to a rotation axis of the first hinge, and the second end is pivoted to the second hinge eccentric to a rotation axis of the second hinge. The first and the second bodies are rotated to be closed to or far away from each other by the first hinge, the second hinge, and the linking rod.
May 13, 2020
March 18, 2021
Acer Incorporated, Deda metal Co., Ltd.
Abstract: A hinge module including a first bracket, a linking rod, and a second bracket. A first rotating shaft is disposed on the first bracket. The linking rod has a first end and a second end opposite to each other. The first end is pivoted to the first rotating shaft. A second rotating shaft is disposed on the second bracket and movably and pivotably connected to the first bracket. The second end of the linking rod is pivoted to the second bracket. In a process where the first bracket and the second bracket are rotated relatively, the first rotating shaft and the second rotating shaft are moved close to or away from each other. A portable electronic device is also disclosed.
Abstract: An axial flow fan includes a hub and a plurality of fan sets disposed around the hub. The hub rotates around a center axis and has a positive pressure side and a negative pressure side opposite to each other. Each of the fan sets includes at least two blades, and each blade has a wind inlet end, a wind outlet end opposite to the wind inlet end, a negative pressure surface, and a positive pressure surface opposite to the negative pressure surface. The wind outlet end of one of the adjacent two blades corresponds to the wind inlet end of the other one of the adjacent two blades. A gap is provided between the negative pressure surface of one of the adjacent two blades and the positive pressure surface of the other one of the adjacent two blades.
Abstract: A computer system and a power management method thereof are provided. The computer system includes a storage apparatus and a processor. The processor is coupled to the storage apparatus. The processor obtains a state transition time of the storage apparatus. The state transition time is the time the storage apparatus takes to enter a power state and leave the power state. The processor changes a transition tolerance time according to the state transition time. In response to an idle timeout, the processor determines whether the storage apparatus enters the power state according to a comparison result between the transition tolerance time and the state transition time. Accordingly, power consumption and performance are improved.
Abstract: A floating control device, an operation method of a floating control device, and an interactive display system are provided. The floating control device includes a motor, a rotating shaft, a rotating component, a plurality of distance sensors and a signal processing unit. The rotating shaft is connected to the motor. The motor drives the rotating component to rotate around the rotating shaft. The distance sensors are disposed on the rotating component. The signal processing unit is configured to receive a plurality of sensing signals from the distance sensors to obtain an operation signal.
Abstract: The present invention discloses a data storage apparatus and an operation method thereof. The data storage apparatus includes a non-volatile memory, a volatile memory coupled to the non-volatile memory, and a memory controller coupled to the non-volatile memory and the volatile memory. The memory controller is configured to perform following operations: receiving a modern standby notification from a host; and updating a second mapping table stored in the non-volatile memory according to a number of flags and a first mapping table stored in the volatile memory.
Abstract: An image stitching apparatus and an operation method thereof are provided. The image stitching apparatus includes a stitching distance determining circuit and a stitching circuit. The stitching distance determining circuit dynamically determines the stitching distance according to the reference information related to the plurality of original images. The stitching circuit is coupled to the stitching distance determining circuit to receive the stitching distance. The stitching circuit image stitches the original images using a stitching distance to generate a stitched image.
Abstract: An electronic device with ultrasonic touch is provided. The electronic device includes a display device, an ultrasonic transmission device, an ultrasonic reception device, a substrate, an ultrasonic controller, and a sensing circuit. The substrate is adjacent to the ultrasonic transmission device and the ultrasonic reception device. The ultrasonic controller generates a control signal. The ultrasonic transmission device generates an ultrasonic wave in a direction toward the substrate according to the control signal, and the ultrasonic reception device simultaneously receives the ultrasonic wave according to the control signal through the substrate and generates a sensing signal corresponding to the received ultrasonic wave. The sensing circuit determines a position whether a touch occurs according to the sensing signal to generate a touch signal.
Abstract: An active touch pen includes a pen barrel, a pen head, a pen shaft, a sleeve, a processor, a sensor and a wireless transmission assembly. The pen head is connected to the pen barrel. The pen shaft and the sleeve are respectively disposed in the pen barrel, and the pen shaft penetrates through the sleeve. The processor, the sensor and the wireless transmission assembly are respectively connected to the pen shaft. The sensor is configured to detect variation of a first pattern of the sleeve during the sleeve rotating relative to the pen barrel so as to obtain a first sensing data and transmits the first sensing data to the processor. The processor calculates rotation amount of the sleeve according to the first sensing data and transmits the rotation amount to the touch display device through the wireless transmission assembly.
Abstract: A method for cooling a heat source by liquefied gas is provided, wherein the heat source is cooled by filling a liquefied gas into a chamber close to the heat source, and the heat source is located in an electronic device. The temperature of the heat source is detected, and the liquefied gas is filled into the chamber via an inlet valve to absorb heat generated by the heat source when the temperature of the heat source rises to a first value. Specifically, an exhaust valve that communicates with the chamber is opened when the temperature of the heat source decreases and then rises to a second value or the pressure inside the chamber reaches a critical value, so that the liquefied gas in the chamber can be vaporized and discharged through the exhaust valve to an atmospheric environment.
October 4, 2018
Date of Patent:
March 2, 2021
Yi-Mu Chang, Ching-Piao Kuan, Fu-Sheng Teng