Abstract: A power system and related methods provide sense resistor fault detection and safe operation of switching power converters and connected devices such as portable electronic devices powered by the switching power converter. The power system detects an open circuit or short circuit condition of the sense resistor and controls output current of the switching power converter to ensure safe operating conditions of the power system and connected equipment. The power system can also detect initial inrush current of the connected equipment and detect a duty cycle of the switching power converter to positively detect a short circuit condition of the sense resistor.

Abstract: An image processing device includes: an acquisition unit that acquires a probability distribution of luminance of a pixel in a plurality of perspective images including the luminance of the pixel which is superposition of luminance components resulting from respective objects, based on an occurrence frequency of a perspective image in which the luminance of the pixel has respective values of a plurality of values; a distribution estimation unit that estimates a mixture distribution indicating the acquired probability distribution; a component estimation unit that estimates a component corresponding to a smallest expectation value distribution of which an expectation value is the smallest among a plurality of partial distributions that form the estimated mixture distribution, and forming at least a portion of the luminance of the pixel; a removal unit that removes the estimated component from the luminance of the pixel included in the perspective image.

Abstract: A switching power converter is provided with an overvoltage protection circuit that softly switches on a power bus switch during a soft-start period responsive to a device connecting to a data cable for receiving power over a power bus coupled to the power bus switch.

Abstract: An information sharing method, device and system, and a computer storage medium are described. The method includes: a server receiving user information change data and determining information change content; inquiring at least one pre-stored group according to the information change content, determining that a group corresponding to the information change content exists, and obtaining information about a target object of the group; and sending the information change content is sent to the target object.

Abstract: The application discloses a method for acquiring parameters of a dynamic signal, including: selecting a dynamic sample signal sequence of a power grid to constitute an autocorrelation matrix; determining an effective rank of the autocorrelation matrix and the number of frequency components of the dynamic sample signal sequence; establishing an AR model, and solving a model parameter of the AR model; determining an expression and a complex sequence of the dynamic sample signal sequence by using a Prony algorithm, wherein the dynamic sample signal sequence is represented by the complex sequence with a minimum square error; and substituting a root of a characteristic polynomial corresponding to the model parameter into the complex sequence and solving various parameters of the dynamic sample signal sequence. In the application, with the idea of AR parameter model, a current signal is considered to be a linear combination of signals at previous time points.

Abstract: Embodiments of a portable electronic device are disclosed, the portable electronic device includes a housing, a hollow sleeve, a speaker assembly, and a keyboard module. The hollow sleeve is pivoted on the housing. The speaker assembly is movably disposed in the hollow sleeve. The keyboard module is movably disposed on the outer surface of the hollow sleeve. Through adjusting the position of the speaker assembly and the keyboard module relative to the housing, the usability of the portable electronic device is improved.

Abstract: Embodiments of a portable electronic device are disclosed, the portable electronic device includes a housing, a hollow sleeve, a speaker assembly, and a keyboard module. The hollow sleeve is pivoted on the housing. The speaker assembly is movably disposed in the hollow sleeve. The keyboard module is movably disposed on the outer surface of the hollow sleeve. Through adjusting the position of the speaker assembly and the keyboard module relative to the housing, the usability of the portable electronic device is improved.

Abstract: A method for on-line diagnosing gradually-changing fault of electronic current transformers comprises the following steps collecting output signals of electronic transformers of a whole transformer substation, calculating theoretical instantaneous values of the current at the tail ends of power transmission lines and on secondary sides of transformers at every moment, comparing the theoretical instantaneous values with the corresponding collected values, calculating residual errors of the electronic current transformers at the head and tail ends of each power transmission line and the primary and the secondary sides of each transformer respectively, judging whether gradually-changing fault occurs with the electronic current transformers by comparing the residual errors with preset threshold values, and simultaneously performing Kirchhoff detection by injecting current into a busbar to position a fault transformer.

Abstract: The present invention discloses a backlight control circuit capable of distinguishing an under current condition, comprising: at least one light emission device path having a voltage node; at least one current source for controlling the current amount on the light emission device path; and at least one under current detection circuit for generating a first control signal according to the voltage at the voltage node, wherein when the first control signal changes its state, the under current detection circuit generates a second control signal to change the voltage on the voltage node if the light emission device path is normally connected.

Abstract: The present invention relates to a composition for treating diabetes and a preparation method thereof as well as use thereof. The present invention provides a composition for treating the diabetes, comprising the following active components based on the parts by weight: 10-100 parts of Pumpkin powder; 6-200 parts of spirulina; and 2-90 parts of Lychee Seed. The invention further provides the preparation method of the composition and the use of the medicament for treating the diabetes. By taking the composition, the blood sugar concentration of the diabetics can be effectively controlled, the complicating diseases of the diabetics can be avoided, and the health of the diabetics can be protected.

Abstract: The present invention relates to a composition for treating diabetes and a preparation method thereof as well as use thereof. The present invention provides a composition for treating the diabetes, comprising the following active components based on the parts by weight: 10-100 parts of Pumpkin powder; 6-200 parts of spirulina; and 2-90 parts of Lychee Seed. The invention further provides the preparation method of the composition and the use of the medicament for treating the diabetes. By taking the composition, the blood sugar concentration of the diabetics can be effectively controlled, the complicating diseases of the diabetics can be avoided, and the health of the diabetics can be protected.

Abstract: In one embodiment the present invention includes an over-current protection method. The method comprises generating a switching signal, starting and stopping a timer, sensing a current through a switch, comparing a response time to a reference time, and generating an over-current alarm signal. The switching signal activates one or more switches in a switching regulator. The timer is started in response to the switch being activated and is stopped in response to the sensed current exceeding a threshold. The response time indicates the time period between the starting and the stopping of the timer. The over-current alarm signal is generated if the response time is less than the reference time.

Abstract: The present invention discloses a handwriting input processing device and method. The method comprises: determining time efficiency and space efficiency for sampling coordinate points on a touch screen according to the prestored configuration parameters; determining a time interval between strokes and a time interval between words of user writing according to the configuration parameters, and sampling and identifying user operations on the touch screen according to the determined time interval between strokes, time interval between words, time efficiency, and space efficiency.

Abstract: Disclosed is a producing method of an optically active ?-amino acid useful as intermediate for the production of medicines, agricultural. chemicals and physiologically active substances, by means of a catalytic and asymmetric synthesis method of high performance and a high enantiomeric excess, without requiring additional procedures such as introduction and removal of protecting group and so on. The method includes subjecting an enamine to an asymmetric hydrogenation.

Abstract: A method for decreasing nitrogen oxides of a pulverized coal boiler using burners (2) of internal combustion type comprising: designing or changing all or part of burners of the pulverized coal boiler as internal combustion type burners (2), in which the ignition sources may be plasma generators (1) or ignition devices such as small oil guns etc., and the power thereof can be adjusted for controlling the ignition intensity in the burners (2). The burners (2) are interiorly divided into several stage combustion chambers (5) and are provided with pulverized coal concentrators (4) which do deep fuel staging in the burners (2).

Abstract: A mobile terminal and method for providing user shortcut operations are provided. The mobile terminal includes a mobile terminal TV function module (103), as well as a touch track identification module (104) and a keypad key logic translation module (105) both connected to the mobile terminal TV function module; it also includes a user configuration module (106) that is connected to both the keypad key logic translation module (105) and the touch track identification module (104), as well as a storage unit that is connected to the user configuration module (106) and the mobile terminal TV function module (103).

Abstract: In one embodiment the present invention includes an over-current protection method. The method comprises generating a switching signal, starting and stopping a timer, sensing a current through a switch, comparing a response time to a reference time, and generating an over-current alarm signal. The switching signal activates one or more switches in a switching regulator. The timer is started in response to the switch being activated and is stopped in response to the sensed current exceeding a threshold. The response time indicates the time period between the starting and the stopping of the timer. The over-current alarm signal is generated if the response time is less than the reference time.

Abstract: A plasma ignition burner. The plasma ignition burner has at least two stages of burner barrels and a plasma generator for igniting the pulverized coal in a first stage burner barrel of the at least two stages of burner barrels. The burning flame of the former stage burner barrel ignites the pulverized coal in the next stage burner barrel, or further burns with the supplemented air in the next stage burner barrel. The axial direction of said plasma generator is parallel to the direction along which the pulverized-coal-contained air flow enters into the first stage burner barrel and at the same time, parallel to the axis of the burner barrels.

Abstract: The present invention discloses a backlight control circuit capable of distinguishing an under current condition, comprising: at least one light emission device path having a voltage node; at least one current source for controlling the current amount on the light emission device path; and at least one under current detection circuit for generating a first control signal according to the voltage at the voltage node, wherein when the first control signal changes its state, the under current detection circuit generates a second control signal to change the voltage on the voltage node if the light emission device path is normally connected.

Abstract: This invention relates to a plasma igniter for directly igniting the pulverized coal burner. Said plasma igniter consists of a plasma generator which includes a composite anode, an combined type cathode, an electromagnetic coil and a transmitting coil; a pulverized coal burner which comprises multi-stage chambers for conveying igniting coal, an equipment for adjusting concentration of coal powder and a four-stage burner canister; and a generator brace. Said combined type cathode consists of a cathode plate, a fixation nut, a conductive pipe, an inflowing pipe, an inflowing guiding pipe, a cathode lid and a sealing spacer. The lining for generating electric arc is assembled with the front of cathode. An alloy plate is used as the cathode plate. The nozzle that used for cooling the cathode is first convergent and then expansive, and is placed in the middle of the conductive pipe. The plasma igniter has the advantage of stable burning.