Abstract: A water purifier is provided. A water purifier according to one aspect of the present invention may include a housing having a first accommodation space therein, and made of a paper material; a water purifier faucet disposed in the first accommodation space to receive raw water and discharge purified water; and a filter coupled to the water purifier faucet to generate the purified water by filtering the raw water, wherein the water purifier faucet includes a base frame having a second accommodation space therein in which the filter is accommodated; a water inlet module provided on one side of the base frame to supply raw water introduced from the outside to the filter; and a water outlet module provided on the other side of the base frame to receive the purified water generated by the filter and discharge it to the outside.

Abstract: An IoT-based system for measurement of contamination distribution of contaminated groundwater through real-time monitoring of a contamination degree of a contaminated groundwater well for control of a contaminated groundwater purification device and prediction of a purification period based on the measurement result.

Abstract: A battery module includes a module housing including a first plate in which one side is open, a second plate coupled with the first plate to form an internal space, and a partition member disposed across the internal space to couple the first plate with the second plate; and a battery cell stack disposed in the internal space, in which a plurality of battery cells are stacked.

Abstract: Provided is an aqueous rechargeable battery that includes a positive electrode including an organic positive active material including a compound represented by Chemical Formula 1, a negative electrode, a separator between the positive electrode and negative electrode, and an aqueous electrolyte including a water solvent and a metal salt with a molality of greater than or equal to about 10 m. Definitions for Chemical Formula 1 are as described in the specification.

Abstract: An aqueous secondary battery including: a positive electrode; a negative electrode; a separator; and an aqueous electrolytic solution including water and a metal salt represented by Chemical Formula 1 AxDy and having molality of about 5 M to about 40 M wherein in Chemical Formula 1, A is at least one metal ion selected from a sodium ion, a potassium ion, a magnesium ion, a calcium ion, a strontium ion, a zinc ion, or a barium ion, D is at least one type of atomic group ion selected from Cl?, SO42?, NO3?, ClO4?, SCN?, CF3SO3?, C4F3SO3?, (CF3SO2)2N?, AlO2?, AlCl4?, AsF6?, SbF6?, BR4?, and PO2F2?, and 0<x?2, and 0<y?2.

Abstract: An aqueous secondary battery according to an embodiment includes: a positive electrode; a negative electrode; a separator; and an aqueous electrolytic solution including water and a metal salt represented by Chemical Formula 1 and having molarity of about 5 m to about 40 m. AxDy??[Chemical Formula 1] In Chemical Formula 1, A is at least one metal ion selected from a sodium ion, a potassium ion, a magnesium ion, a calcium ion, a strontium ion, a zinc ion, or a barium ion, D is at least one type of atomic group ion selected from Cl?, SO42?, NO3?, ClO4?, SCN?, CF3SO3?, C4F9SO3?, (CF3SO2)2N?, AlO2?, AlCl4?, AsF6?, SbF6?, BF4?, and PO2F2?, and 0<x?2, and 0<y?2.

Abstract: An information-providing device using an electronic pen according to an embodiment of the present invention comprises: a receiving unit for receiving pattern information sensed by an electronic pen on a recording medium on which a pattern is formed; a background image extraction unit for extracting a background image from the pattern information; a writing data conversion unit for converting the pattern information to writing data; a storage unit for storing the writing data and a background image corresponding to the writing data; and a communication unit for transmitting the writing data and the background image corresponding to the writing data to a user terminal.

Abstract: Provided is an electronic board system including an electronic board which includes a sheet on which a pattern for determining position information is printed and a glass layer which is formed on the sheet and has a thickness of 0.1 mm to 3 mm, an electronic pen which senses the pattern and extracts position information on the electronic board from the sensed pattern, and an information processing apparatus which receives the position information from the electronic pen and controls a processing result according to the received position information to be output on the electronic board.

Abstract: An information processing system for a handwriting search according to an embodiment of the present invention comprises: an information extraction device for transforming pattern information sensed by an electronic pen into handwriting data on a recording medium with a pattern formed thereon; and an information management device for transforming the handwriting data into digital data, storing the handwriting data and the digital data, searching for digital data including a keyword when a search request including the keyword is received from a user terminal, and transmitting, to the user terminal, the handwriting data corresponding to the searched digital data.

Abstract: An advertisement-providing device using an electronic pen according to one embodiment of the present invention comprises: a receiving unit for receiving pattern information sensed by an electronic pen on a recording medium on which a pattern is formed, and identification information of the electronic pen; a writing data conversion unit for converting the pattern information to writing data; an advertisement information extraction unit for extracting advertisement information from the identification information; a storage unit for storing the writing data and the advertisement information; and a communication unit for transmitting, to a user terminal, the writing data and advertisement information corresponding to the writing data.

Abstract: Provided is an electronic board system. The electronic board system includes an electronic pen which senses pattern information on a recording medium on which a dot pattern is formed, an information processing apparatus which stores first pattern information on a first recording medium and second pattern information on a second recording medium, compares the sensed pattern information received from the electronic pen with the first pattern information and the second pattern information, processes a signal related to the first recording medium or the second recording medium according to a comparison result, and controls a processing result to be output, and an electronic board which outputs the processing result.

Abstract: The present invention is a system and system for equalizing a signal in a communication system. The signal is represented by samples at a time instant, and the samples are filtered using a sign permutation filter. An estimate of the signal is determined by a linear combination of the samples with corresponding weights. The error of the estimate is then computed. The weights are updated by an updating circuit to minimize the error.

Abstract: A device for canceling co-channel interference and a method thereof are provided. The device, in a simulcast receiver for receiving a high definition television (HDTV) signal having a digital format and an analog broadcasting TV signal, includes a detector for detecting a synchronous signal from the analog broadcasting TV signal and outputting a detection signal, a co-channel interference rejection filter for removing co-channel interference from a first input signal including co-channel interference and outputting a second input signal, and a selector for selecting either the first or second input signal according to the detection signal. Therefore, the presence or absence of co-channel interference can be accurately determined regardless of channel environment.

Abstract: A motion image compression apparatus capable of changing frame rate, including a compression section for compressing motion images using a prediction technique after receiving the motion images frame by frame, and a preprocessing section located at a front end of the compression section for receiving original motion images, changing a frame rate of the original motion images to a desired frame rate and sending the motion images having the desired frame rate to the compression section frame by frame.

Abstract: A dynamic focus electron gun for a color cathode ray tube including a cathode, a control electrode and a screen electrode, which constitute a triode, a first focusing electrode having three vertically elongated electron beam through-holes formed through its emitting surface, a second focusing electrode which constitutes a quadrupole lens together with the first focusing electrode and having three circular electron beam through-holes formed through its entering surface facing the emitting surface of the first focusing electrode, and a final accelerating electrode installed adjacent to the second focusing electrode and constituting a main electronic lens together with the second focusing electrode.

Abstract: A method for preventing a collision of an extended orthogonal code uses an extended orthogonal code applying a hadamard code, and prevents an extended orthogonal code's collision occurred by a duplicated address among a plurality of subscriber channels, in a wideband code division multiple access wireless local loop (WCDMA-WLL) communication system. The method effectively prevents an address collision among a plurality of channels in case that the channels having different data transmission speeds are simultaneously transmitted by using one WCDMA-WLL frequency. As a result, when a plurality of subscribers is divided by using an extended orthogonal code in a WCDMA-WLL system supporting a multiple-data transmission speed, the method prevents an allocation of a collidable matrix code. Also, the method prevents an error generated in dividing subscriber channels caused by a code collision, and thus enhances a reliability and a stability of a communication system.

Abstract: A modulation/demodulation receiver having a reference signal in a digital communication system. A method for signal processing and co-channel interference signal removal in the receiver includes the steps of processing an input signal to be at a predetermined multilevel, feeding the processed signal to an adaptive equalizer, determining the type of multilevel from the signal applied to the adaptive equalizer and selecting an operation mode from at least two multilevel operation modes, for the adaptive equalizer and blocks downstream from the adaptive equalizer, and causing the adaptive equalizer to adaptively equalize the signal at the predetermined multilevel in the selected operation mode and remove co-channel interference.

Abstract: Circuit and method for determining a received signal for a receiver such as a simulcast receiver or an HDTV receiver are provided. The circuit includes a first detector for detecting a first reference signal included in a received signal and outputting a first detection signal, and a second detector for detecting a second reference signal included in the received signal and outputting a second detection signal. The circuit also includes a generator for generating a determination signal which indicates that the received signal is an analog broadcasting signal in the event the first detection signal is detected, and indicates that the received signal is a high definition signal in the event if the second detection signal is detected. Therefore, the received signal can be determined correctly, according to channel selection.

Abstract: A co-channel interference canceler and a method thereof. The co-channel interference canceler comprises: a co-channel interference rejection filter for outputting a second signal by performing co-channel interference rejection filtering on a first signal including co-channel interference; a selection signal generator for generating a selection signal which selects the signal with less error by calculating the error of each of the first and second signals with respect to a reference signal; a selection corrector for outputting a corrected selection signal by correcting the selection signal such that a predetermined one of the first and second signals is selected in a predetermined error region; and a selector for selecting one of the first and second signals according to the corrected selection signal.

Abstract: A circuit and method for adaptively calculating a decision error of a digital signal in a digital modulation system.