Abstract: The present disclosure provides a foldable bed frame and associated methods for deploying the foldable bed frame. The bed frame may comprise one or more supporting members for supporting at least a portion of the bed frame, wherein the one or more supporting members comprise: a first bar comprising an opening; a second bar comprising a groove having a first end and a second end; and a locking mechanism comprising an elastic element and a pin. The pin may be inserted into (i) the opening of the first bar and (ii) the groove of the second bar to couple the first and second bars together. The first and second bars may be movable relative to each other when the pin is moved from a first position to a second position in response to a force applied to the elastic element.

Abstract: The present disclosure provides a foldable bed frame and associated methods for deploying the foldable bed frame. The bed frame may comprise one or more supporting members for supporting at least a portion of the bed frame, wherein the one or more supporting members comprise: a first bar comprising an opening; a second bar comprising a groove having a first end and a second end; and a locking mechanism comprising an elastic element and a pin. The pin may be inserted into (i) the opening of the first bar and (ii) the groove of the second bar to couple the first and second bars together. The first and second bars may be movable relative to each other when the pin is moved from a first position to a second position in response to a force applied to the elastic element.

Abstract: A pneumatic-based tactile sensor according to an exemplary embodiment of the present invention includes: a tactile sense transmitting pneumatic unit for generating pneumatic pressure by an external load applied to a first side; and a tactile sense receiving sensor unit for measuring the load by transforming a magnitude of pneumatic pressure of the tactile sense transmitting pneumatic unit into a displacement.

Abstract: A pneumatic-based tactile sensor according to an exemplary embodiment of the present invention includes: a tactile sense transmitting pneumatic unit for generating pneumatic pressure by an external load applied to a first side; and a tactile sense receiving sensor unit for measuring the load by transforming a magnitude of pneumatic pressure of the tactile sense transmitting pneumatic unit into a displacement.

Abstract: An alternating current sequential drive type LED lighting device having improved flicker performance and being capable of reducing the light output deviation of the LED lighting device generated during operation intervals by removing nonluminous intervals of the LED lighting device by means of a loop-back compensation unit.

Abstract: Disclosed are a light emitting diode (LED) driver circuit having improved flicker performance and an alternating current-driving type LED lighting device including the same. The LED driver circuit can remove an LED off period using a charging and discharging circuit during a compensation period so as to reduce light output deviation of an LED lighting device, and provide a driving voltage to another element of the LED lighting device, using the charging and discharging circuit during an additional discharging period so as to simultaneously improve power efficiency.

Abstract: An alternating current sequential drive type LED lighting device having improved flicker performance and being capable of reducing the light output deviation of the LED lighting device generated during operation intervals by removing nonluminous intervals of the LED lighting device by means of a loop-back compensation unit.

Abstract: An alternating current sequential drive type LED lighting device having improved flicker performance and being capable of reducing the light output deviation of the LED lighting device generated during operation intervals by removing nonluminous intervals of the LED lighting device by means of a loop-back compensation unit.

Abstract: Disclosed are a light emitting diode (LED) driver circuit having improved flicker performance and an alternating current-driving type LED lighting device including the same. The LED driver circuit can remove an LED off period using a charging and discharging circuit during a compensation period so as to reduce light output deviation of an LED lighting device, and provide a driving voltage to another element of the LED lighting device, using the charging and discharging circuit during an additional discharging period so as to simultaneously improve power efficiency.

Abstract: An LED luminescence apparatus is provided, which includes a rectifying unit rectifying an AC voltage and generating a rectified voltage; a plurality of LEDs connected in series to an output terminal of the rectifying unit; a plurality of switches having drain terminals connected to cathodes of the plurality of LEDs, respectively; and a switch control unit sensing current through a plurality of resistors connected to source terminals of the plurality of switches, respectively, comparing the sensed current with a set reference current, and outputting a voltage corresponding to a difference between the sensed current and the set reference current to a gate terminal of each of the plurality of switches.

Abstract: The present invention relates to a cochlear implant apparatus, and more particularly, to a cochlear implant apparatus capable of controlling the sensitivity or selectivity of sound through actuators. In accordance with an exemplary embodiment of the present invention, a cochlear implant apparatus for active feedback control which is inserted into the human body and configured to detect a sound in each frequency band includes a sensor unit configured to detect vibration according to a sound and generate an electrical signal corresponding to a magnitude of the vibration and actuators disposed in the sensor unit and each configured to react to the electrical signal and to control sensitivity according to the magnitude of the sound or the selectivity of a sound detected in each frequency band.

Abstract: Disclosed herein are a microelectromechanical systems (MEMS) microphone with a dual-back plate, and a method of manufacturing the same. The MEMS microphone according to an exemplary embodiment of the present invention includes: a substrate having a first back plate formed at a central portion thereof; a membrane plate disposed on first support parts formed at both sides on the substrate and vibrated depending on external sound pressure; and a second back plate disposed on second support parts formed at both sides of the membrane plate.

Abstract: An alternating current sequential drive type LED lighting device having improved flicker performance and being capable of reducing the light output deviation of the LED lighting device generated during operation intervals by removing nonluminous intervals of the LED lighting device by means of a loop-back compensation unit.

Abstract: An LED luminescence apparatus is provided, which includes a rectifying unit rectifying an AC voltage and generating a rectified voltage; a plurality of LEDs connected in series to an output terminal of the rectifying unit; a plurality of switches having drain terminals connected to cathodes of the plurality of LEDs, respectively; and a switch control unit sensing current through a plurality of resistors connected to source terminals of the plurality of switches, respectively, comparing the sensed current with a set reference current, and outputting a voltage corresponding to a difference between the sensed current and the set reference current to a gate terminal of each of the plurality of switches.

Abstract: An LED luminescence apparatus is provided, which includes a rectifying unit rectifying an AC voltage and generating a rectified voltage; a plurality of LEDs connected in series to an output terminal of the rectifying unit; a plurality of switches having drain terminals connected to cathodes of the plurality of LEDs, respectively; and a switch control unit sensing current through a plurality of resistors connected to source terminals of the plurality of switches, respectively, comparing the sensed current with a set reference current, and outputting a voltage corresponding to a difference between the sensed current and the set reference current to a gate terminal of each of the plurality of switches.

Abstract: The present invention relates to a cochlear implant apparatus, and more particularly, to a cochlear implant apparatus capable of controlling the sensitivity or selectivity of sound through actuators. In accordance with an exemplary embodiment of the present invention, a cochlear implant apparatus for active feedback control which is inserted into the human body and configured to detect a sound in each frequency band includes a sensor unit configured to detect vibration according to a sound and generate an electrical signal corresponding to a magnitude of the vibration and actuators disposed in the sensor unit and each configured to react to the electrical signal and to control sensitivity according to the magnitude of the sound or the selectivity of a sound detected in each frequency band.

Abstract: An LED luminescence apparatus is provided, which includes a rectifying unit rectifying an AC voltage and generating a rectified voltage; a plurality of LEDs connected in series to an output terminal of the rectifying unit; a plurality of switches having drain terminals connected to cathodes of the plurality of LEDs, respectively; and a switch control unit sensing current through a plurality of resistors connected to source terminals of the plurality of switches, respectively, comparing the sensed current with a set reference current, and outputting a voltage corresponding to a difference between the sensed current and the set reference current to a gate terminal of each of the plurality of switches.

Abstract: Disclosed herein are a microelectromechanical systems (MEMS) microphone with a dual-back plate, and a method of manufacturing the same. The MEMS microphone according to an exemplary embodiment of the present invention includes: a substrate having a first back plate formed at a central portion thereof; a membrane plate disposed on first support parts formed at both sides on the substrate and vibrated depending on external sound pressure; and a second back plate disposed on second support parts formed at both sides of the membrane plate.

Abstract: A printing control system and method for an inkjet printer, wherein a carrier equipped with one or more inkjet cartridges is driven while the line feeding is being executed, and the line printing is initiated after the line feeding of the paper is completed. The printing control method may comprise a number of steps to determine whether a line printing by the ink cartridges has been completed, and if so, executing the line feeding. The printing control method may further comprise estimating an expected length of time TE from a time point TC where the carrier initiates a next movement, to a time point TI where the next line printing is initiated, and comparing a length of feeding time TRX remaining until the line feeding is completed with the expected length of time TE, and driving the carrier if the length of remaining feeding time TRX becomes less than or equal to the expected length of time TE.

Abstract: Provided is a method of printing thermal media by aligning an image using a printer in which a thermal printhead, a feeding roller, and an edge detection sensor are sequentially disposed in a print proceeding direction. The method includes the steps of feeding a thermal medium having a first surface and a second surface so that a front edge of the thermal medium is movable a first distance from the edge detection sensor. The thermal medium print starting position is located under a heating element of the thermal printhead. A printing process for the first surface is performed while feeding the medium nad the thermal printhead is rotated so that the thermal printhead faces the second surface of the thermal medium. The thermal medium is fed so that the front edge of the thermal medium moves a second distance from the edge detection sensor. The print starting position of the second surface is located under the heating element of the thermal printhead.