Abstract: Provided are a battery state-of-charge (SOC) estimation method and a battery management system which are capable of estimating an SOC using an inexpensive processor and a small-capacity memory. The SOC estimation method includes an SOC table creation step, an SOC calculation step, an SOC comparison step, and a processing step. The battery management system includes a battery, a sensing resistor, a control switch unit, and a processor.

Abstract: Disclosed are a communication method between a master controller and slave controllers, a slave controller for the communication method, and a battery management system using the communication method and the slave controller, in which the master controller receives safety information about battery cells through a plurality of channels even when each of a plurality of slave controllers includes only one micro controller unit, thereby minimizing the increase in the cost and enhancing the safety of the battery management system. The communication method includes performing bidirectional communication between a master controller and first to Nth (where N is an integer equal to or more than two) slave controllers through a first communication channel, and receiving, by the master controller, an indication signal through a second communication signal via the first to Nth slave controllers.

Abstract: An electronic device is provided. The electronic device includes a housing including a window disposed in at least a partial area of the housing and forming at least a portion of an outer surface of the electronic device, a touch screen display including an active area and a non-active area and accommodated in the housing such that at least a portion of the touch screen display is visually exposed through the window, at least one processor accommodated in the housing and electrically connected to the touch screen display, a memory accommodated in the housing and electrically connected to the at least one processor, and an optical layer disposed between the touch screen display and the window. A portion of a surface area of the optical layer that faces the active area of the touch screen display is formed in a bumpy structure.

Abstract: An electronic device includes a housing including a first surface, a second surface, and a third surface defining an internal space of the housing, a touch screen display interposed between the first surface and the second surface, and a sensor module disposed under the touch screen display and including a light emitting unit and a light receiving unit, wherein the third surface includes a plurality of through holes each including optical structures, wherein a portion of light emitted from the light emitting unit is guided to an exterior of the electronic device through a first optical structure of a first through hole, and wherein at least a portion of light introduced from the exterior of the electronic device is guided to the light receiving unit on a second optical structure of a second through hole.

Abstract: A display module is provided. The display module includes a display area which includes a plurality of pixels, a plurality of first conductive lines, and a plurality of second conductive lines intersecting the first conductive lines, a non-display area at least partially surrounding the display area, test circuitry electrically connected with the first conductive lines, and a third conductive line electrically connected between one of the first conductive lines and the test circuitry. The third conductive line may include a portion disposed in the non-display area and extending along a periphery of the display area.

Abstract: A thickness measuring apparatus and a thickness measuring method. The thickness measuring apparatus includes a light source outputting an extended monochromatic light with coherence; a collimating lens converting output light of the light source into incident beam of parallel ray; a beam splitter reflecting and providing the incident beam to a measurement target and transmitting first reflection light reflected on a top surface of the measurement target and second reflection light reflected on a bottom surface of the measurement target; an imaging lens disposed between the measurement target and the beam splitter with a predetermined focal distance to receive and provide the incident beam to a measurement position of the measurement target disposed on the focal distance; a camera photographing an interference fringe formed by the first and second reflection lights and outputting an interference fringe image; and a processing part.

Abstract: Provided are a thickness measuring apparatus and a thickness measuring method. The thickness measuring method includes irradiating a first laser beam of a first wavelength ?1 to a transparent substrate and measuring intensity of the first laser beam transmitting through the transparent substrate; irradiating a second laser beam of a second wavelength ?2 to the transparent substrate and measuring intensity of the second laser beam transmitting through the transparent substrate; and extracting a rotation angle on a Lissajous graph using the first and second laser beams transmitting through the transparent substrate. A phase difference between adjacent rays by multiple internal reflection of the first laser beam and a phase difference between adjacent rays by multiple internal reflection of the second laser beam is maintained at ?/2.

Abstract: Provided are balancing device and method which can achieve a balancing function between energy storage units connected in series using a small number of switch elements, thereby reducing the manufacturing cost and size and enabling various balancing modes. The balancing device for balancing between a plurality of energy storage units a battery module, in which the energy storage units are connected in series, includes: a transformer; and a switch network comparing a cell switch unit, a polarity switch unit, and au auxiliary switch unit, wherein the auxiliary switch unit includes: a first auxiliary switch unit for connecting a second common node to one terminal of the secondary winding of the transformer; and a second auxiliary switch unit for connecting a first common node to the other terminal of the secondary winding of the transformer.

Abstract: A camera configured to record video and comprising a frame, a lens, an image sensor receiving light passing through the lens, a user interface including a display screen positioned opposite the lens, touch control elements, and navigation logic structured to turn on the camera responsive to touching in a first pattern at least one of the touch control elements, switch to another operating mode from a present operating mode responsive to clicking, at least once, the second touch control element, and enter a program mode responsive to touching the touch control elements according to a second pattern different than the first pattern and different from a single click of the second touch control element.

Abstract: Provided are an absolute position measurement method, an absolute position measurement apparatus, and a scale. The scale includes a scale pattern formed by replacing repeatedly arranged pseudo-random-codes with a sequence of a linear feedback shift register of N stages using a first symbol with first width representing a first state and a second symbol with second width representing a second state. The first is divided into two or more first symbol areas of different structures, and the second symbol is divided into two or more second symbol areas of different structures. There is at least one overlap area in which the first symbol and the second symbol overlap each other to have the same structure.

Abstract: A method of transmitting control information includes dividing frequency bandwidth into ranges to which the same PMI (precoding matrix index) is applied, obtaining multiple antenna information by the range to which the same PMI is applied and transmitting the multiple antenna information. Since multiple antenna information is transmitted by the unit of a range to which the same PMI is applied, radio resources allocated for transmitting the multiple antenna information may be reduced, thereby enhancing data transmission efficiency.

Abstract: A display module is provided. The display module includes a display area which includes a plurality of pixels, a plurality of first conductive lines, and a plurality of second conductive lines intersecting the first conductive lines, a non-display area at least partially surrounding the display area, test circuitry electrically connected with the first conductive lines, and a third conductive line electrically connected between one of the first conductive lines and the test circuitry. The third conductive line may include a portion disposed in the non-display area and extending along a periphery of the display area.

Abstract: A phase detector includes an alternating current input unit to which input power is applied; a zero cross generator that outputs a zero cross signal at a zero cross point of the input power by using a photo coupler; and a zero cross detector that converts the zero cross signal to a pulse signal and detects the phase of the input power based on the pulse signal. A compensation capacitor is connected in parallel at a first side of the photo coupler.

Abstract: A thickness measuring apparatus and a thickness measuring method. The thickness measuring apparatus includes a light source outputting an extended monochromatic light with coherence; a collimating lens converting output light of the light source into incident beam of parallel ray; a beam splitter reflecting and providing the incident beam to a measurement target and transmitting first reflection light reflected on a top surface of the measurement target and second reflection light reflected on a bottom surface of the measurement target; an imaging lens disposed between the measurement target and the beam splitter with a predetermined focal distance to receive and provide the incident beam to a measurement position of the measurement target disposed on the focal distance; a camera photographing an interference fringe formed by the first and second reflection lights and outputting an interference fringe image; and a processing part.

Abstract: Provided are a method of generating a message authentication code and an authentication device and an authentication request device using the method. The method includes generating a second secret key by encrypting seed data, a first secret key, and first auxiliary data using an encryption algorithm; and encrypting the seed data, the second secret key, and second auxiliary data using the encryption algorithm, wherein the encryption algorithm receives data of a preset base number of bits and encrypts the received data, and the number of bits of the second auxiliary data varies according to a difference between the number of bits of the first secret key and the number of bits of the second secret key.

Abstract: The present invention relates to a battery parameter management system and a battery parameter estimation method which are capable of simply estimating parameters of elements forming a battery equivalent model having a simple structure. The battery parameter system includes an amperemeter, a voltmeter, a control switch unit, and a processor, and the battery parameter estimation method includes supplying a pulse current, estimating resistance of an internal resistor, estimating capacitance of an internal capacitor, and estimating parameters of dynamic elements.

Abstract: A phase detector includes an alternating current input unit to which input power is applied; a zero cross generator that outputs a zero cross signal at a zero cross point of the input power by using a photo coupler; and a zero cross detector that converts the zero cross signal to a pulse signal and detects the phase of the input power based on the pulse signal. A compensation capacitor is connected in parallel at a first side of the photo coupler.

Abstract: A security method using an image frame executed in a terminal device connected to an image photographing device includes step of receiving an image frame generated according to a preset frame generation condition from the image photographing device, step of determining whether an event occurrence condition is satisfied, and step of recording and storing the image frame by adjusting the number of frames recorded per unit time according to the determination result. Therefore, by recording and storing an image frame that adjusts the number of frames recorded per unit time at an internal memory or by storing an image frame that adjusts the number of frames recorded per unit time at a cloud server by determining a situation of an image frame received from an image photographing device, even if a smart phone is robbed by a crime participant, a crime situation can be determined.

Abstract: The present invention relates to a method for providing control information in a mobile communication system. More specifically, the invention relates to a method for providing control information through a network in mobile communication. The method comprises: a step for configuring the information associated with plural frequency resource groups and the power levels thereof in the control information of preset data format, wherein the plural frequency resource groups are for application of FFR (Fractional Frequency Reuse), and a step for transmitting the control information to at least one terminal.

Abstract: A method of transmitting control information includes dividing frequency bandwidth into ranges to which the same PMI (precoding matrix index) is applied, obtaining multiple antenna information by the range to which the same PMI is applied and transmitting the multiple antenna information. Since multiple antenna information is transmitted by the unit of a range to which the same PMI is applied, radio resources allocated for transmitting the multiple antenna information may be reduced, thereby enhancing data transmission efficiency.