Abstract: A bulk acoustic wave resonator (BAWR) includes a bulk acoustic resonance unit and at least one compensation layer. The bulk acoustic resonance unit includes a first electrode, a second electrode, and a piezoelectric layer disposed between the first electrode and the second electrode. The first electrode, the second electrode, and the piezoelectric layer each include a material that modifies a resonance frequency based on a temperature, and the at least one compensation layer includes a material that adjusts the resonance frequency modified based on the temperature in a direction opposite to a direction of the modification.

Abstract: Provided are an ultrasonic probe and a method of manufacturing the same. The ultrasonic probe includes: a first unit configured to generate an ultrasonic wave from a first electrical signal or generate a second electrical signal from an echo signal of the ultrasonic wave; a second unit configured to provide the first electrical signal to the first unit or receive the second electrical signal from the first unit; and a third unit configured to electrically connect the first unit to the second unit, the third unit comprising a plurality of conductive bumps spaced apart from one another and a non-conductive paste or film that surrounds the plurality of conductive bumps.

Abstract: The present invention relates to a method of preparing high-strength coated whole cottonseed for livestock feed, wherein the germination ability of whole cottonseed is removed using high-temperature and high-pressure steam, and the surface of whole cottonseed is coated with gelatinized starch with high viscosity, which is prepared by gelatinizing starch in a preparation process. According the method of the present invention, since the germination ability of whole cottonseed is removed, release of foreign genes into the domestic environment, which may occur when using whole cottonseed for livestock feed, may be fundamentally prevented, and thus the method of the present invention may contribute to protection of domestic plant genetic resources. In addition, the use of gelatinized starch with increased viscosity, which is prepared by gelatinizing starch in a preparation process, may dramatically increase the selection range of coating agents.

Abstract: A railroad vehicle monitoring system installed on a railroad vehicle includes: wireless sensor devices installed at attached equipment of the railroad vehicle, including a sensor that senses statuses of the attached equipment, configured to wirelessly transmit a sensing value sensed by the sensor in real time, and including an energy harvester configured to convert energy generated by running of the railroad vehicle into electric energy, and supply the electric energy as a power source for the sensor, a signal process in the sensing value, and wireless communication of the sensing value; sink node devices configured to wirelessly receive the sensing value and output, in real time, railroad vehicle status information obtained by integrating the received sensing value; and a vehicle status monitoring device configured to receive the railroad vehicle status information, integrate and manage the railroad vehicle status information, and output the integrated railroad vehicle status information in real time.

Abstract: Embodiments of the invention are generally directed to transmission and detection of multi-channel signals in reduced channel format. An embodiment of a method for transmitting data includes determining whether a first type or a second type of content data is to be transmitted, where the first type of content data is to be transmitted at a first multiple of a base frequency and the second type of data is to be transmitted at a second multiple of the base frequency. The method further includes selecting one or more channels from a plurality of channels based on the type of content data, clocking a frequency on the first or second multiple of the base frequency according to the type of content data in the selected channels, modifying the content data to fit within a single output channel, and transmitting the modified data via a single output channel at the chosen multiple of the base frequency.

Abstract: A portable ultrasonic probe includes a main body including a transducer to generate an ultrasonic wave and a folder portion including a display portion and pivotally coupled to an end portion of the main body, the main body includes a first heat radiation module configured to absorb and emit heat generated by the transducer, and the folder portion includes a second heat radiation module thermally coupled to the first heat radiation module when the folder portion is in a first position and configured to emit heat transmitted from the first heat radiation module.

Abstract: A control method for collision avoidance in low power wireless sensor communication including a center node and a plurality of neighbor nodes includes assigning a seed to a neighbor node associated with a center node, updating, by the neighbor node, the seed at each radio frame, determining, by the neighbor node, a criterion for performing communication, and transmitting data in a next slot according to a result of carrier sensing is provided.

Abstract: A wireless sensor device includes: an energy harvester configured to convert vibration generated from a broadband vibration source into electricity, an elastic member arranged to receive the vibration and a communication unit fixed by the elastic member, supplied with the converted electricity from the energy harvester, and configured to transmit sensing information obtained by sensing a measurement target. The elastic member operates as a mechanical filter configured to limit a frequency range and an acceleration magnitude of the vibration to be transferred to the communication unit for stabilizing the performance of the communication unit, and the communication unit is arranged to receive vibration passing through the elastic member.

Abstract: The present invention relates to a sensing control signal generation circuit and a semiconductor memory device including the same. In an embodiment, a semiconductor memory device may include a memory block suitable for including a plurality of memory cells coupled in series and a plurality of cell strings respectively coupled to a plurality of bit lines, page buffers suitable for being coupled to the respective bit lines in response to a sensing control signal and each suitable for sensing a voltage of each of the bit lines transferred to a sensing node and storing data corresponding to the results of the sensing or temporarily storing data to be programmed into a selected memory cell, and a sensing control signal generation unit suitable for generating the sensing control signal having a form of a ramping signal rising at a constant slope during the program operation.

Abstract: The present invention relates to an arc flash detection device for detecting the generation of an arc flash in a power receiving and distributing facility and for generating a trip signal upon the generation of the arc flash, including: optical fiber cables for transmitting an arc flash detection optical signal and receiving an arc flash optical signal converted by the arc flash; a lens part having a reflection element adapted to reflect the arc flash detection optical signal transmitted through the optical fiber cables and the arc flash optical signal converted by the arc flash if the arc flash is generated; and an optical detection part for transmitting the arc flash detection optical signal through the optical fiber cables and comparing the arc flash optical signal received through the lateral periphery of one side optical fiber cable and the arc flash optical signal reflected on the lens part with the arc flash detection optical signal to output an arc flash generation signal as a difference signal betwee

Abstract: An apparatus for dynamically configuring a wireless sensor relay network for monitoring train activity according to the present invention includes a plurality of wireless sensors that wirelessly transmit sensor data obtained by measuring heat and vibration of a train running unit, a plurality of coordinator units that are located in train cars, and receive the sensor data from one or more wireless sensors located within the same train car, a plurality of wireless relay units that are located in the train cars, form a wireless sensor relay network with the wireless relay unit located in a neighboring train car, and transmit the sensor data received from the coordinator units, and a gateway unit that receives the sensor data from the plurality of wireless relay units through the wireless sensor relay network, and transmits the received sensor data to a control center.

Abstract: Provided are a matching segment circuit, to which a radio frequency (RF) is applied, and an RF integrated device using the matching segment circuit. The matching segment circuit to which an RF is applied may include an input end connected to a first RF device, a parallel segment having a first capacitor and a first inductor connected in parallel, a second inductor connected to the parallel segment in series, and an output end connected to a second RF device. The first capacitor, the first inductor, and the second inductor may be configured so that an impedance of the first RF device and an impedance of the second RF device may match.

Abstract: A semiconductor chip includes a first circuit block configured to receive a first power supply voltage through a first power supply terminal of the semiconductor chip, a second circuit block configured to receive a second power supply voltage through a second power supply terminal of the semiconductor chip, and an alternative supply unit that is connected between the first power supply terminal and the first circuit block and receives the first power supply voltage through the first power supply terminal. The alternative supply circuit is configured to apply an alternative power supply voltage generated using the second power supply voltage to the first circuit block in response to a supply of the first power supply voltage being stopped.

Abstract: A semiconductor memory device includes a memory cell suitable for having a predetermined cell state based on a data stored therein, a control signal generation unit suitable for generating a control signal for changing the cell state of the memory cell during a reading operation, an information storage unit suitable for storing a variation status information of the control signal to which a moment when the cell state of the memory cell changes is reflected, and an output unit suitable for outputting the variation status information of the control signal stored in the information storage unit as a signal corresponding to the data stored in the memory cell.

Abstract: Embodiments of the invention are generally directed to transmission and detection of multi-channel signals in reduced channel format. An embodiment of a method for transmitting data includes determining whether a first type or a second type of content data is to be transmitted, where the first type of content data is to be transmitted at a first multiple of a base frequency and the second type of data is to be transmitted at a second multiple of the base frequency. The method further includes selecting one or more channels from a plurality of channels based on the type of content data, clocking a frequency on the first or second multiple of the base frequency according to the type of content data in the selected channels, modifying the content data to fit within a single output channel, and transmitting the modified data via a single output channel at the chosen multiple of the base frequency.

Abstract: A multimedia system for data communications. A source device communicates data over a full duplex control channel of a multimedia communication link. The source device has a first link layer that retries unsuccessful data communications over the full duplex control channel until a first maximum retry limit of the first link layer is reached. A sink device communicates data over the full duplex control channel of the multimedia communication link. The sink device has a second link layer that retries unsuccessful data communications over the full duplex control channel until a second maximum retry limit of the second link layer is reached, where the second maximum retry limit is different than the first maximum retry limit.

Abstract: A tapping device and method using induction heat for melt comprises melting furnace made of steel; heating unit disposed in the upper part in the melting furnace and made of graphite material; induction coil wound around the heating unit; insulator disposed adjacent to the bottom surface of the lower part of the melting furnace; supporter disposed outside the insulator; and firebricks disposed on the bottom surface of melting furnace and outside the supporter.

Abstract: Embodiments of the invention are generally directed to a multimedia I/O system architecture for advanced digital television. An embodiment of a multimedia system includes an I/O (input/output) control chip, the I/O control chip including one or more audio/video sub-processing engines for the processing of one or more data streams; a processing core chip for the processing of data, including audio/video data received from the I/O control chip; and one or more shared I/O channels for the transfer of data between the I/O control chip and the processing core chip.

Abstract: The present invention relates to a differential amplifier circuit. A differential amplifier circuit has an advantage in that it can improve a voltage drop characteristic attributable to a load current by enhancing response speed. Furthermore, the differential amplifier circuit can improve a bandwidth characteristic by reducing the quiescent current of a class AB amplifier and also improve a slew rate characteristic by adaptively changing a tail current because a signal path is diversified. Accordingly, response speed can be enhanced by an improved bandwidth characteristic, and the current driving ability can be also enhanced by an improved slew rate characteristic.