KMW Inc and Sk Telesys Co. | Date: 2016-01-28
Some embodiments of the present disclosure relate to an analog distributed antenna system, and its operating method, provided with an orthogonal frequency division multiplexing (OFDM) high-speed modem for use in transceiving control signals between a main unit and remote units in order to effectively control the remote units connected to the main unit.
KMW Inc | Date: 2017-01-04
A multi-band antenna apparatus according to one of various embodiments of the present invention may comprise: an antenna housing in which an antenna module having two or more frequency bands is mounted; a plurality of repeaters detachably coupled to the antenna housing according to slide movement thereof; connector parts which protrude from the antenna housing and are connected to the plurality of repeaters, respectively; and a bracket which fixes the antenna housing to an outer wall and couples the plurality of repeaters to the antenna housing in an individually detachable manner.
KMW Inc | Date: 2017-03-01
The present disclosure in some embodiments provides an antenna line device installed in each antenna apparatus of a multiple antenna system, including a control part for controlling according to control signal from a base station body, and at least two of a DC ping part, RF ping part and domain detection part. The DC ping part is configured to include an electrical element installed in an operating power transfer path to cause a voltage drop, and to detect an operating power level before or after the voltage drop caused by the electrical element under the control of the control part. The RF ping part is configured to check a connection of feeder lines to corresponding antenna arrays by detecting signals inputted through the feeder lines under the control of the control part. The domain detection part includes a switch configured to be installed in a control data transfer path and to be turned on/off for identifying an antenna apparatus that covers each coverage sector.
KMW Inc | Date: 2017-01-25
The present invention relates to a power saving safety helmet capable of wireless communication, and a wireless transmission and reception method therefor, and the power saving safety helmet capable of wireless communication comprises: a voice input unit for receiving a voice input from a user; a sensor unit sensing whether an accident involving the user has occurred so as to generate an accident sensing signal; a wireless communication unit for intermittently transmitting and receiving, by using frequency channels different from each other, a voice signal and an emergency signal generated by the voice and the accident sensing signal or transmitted from the outside; a sound output unit for outputting a voice and a beep sound corresponding to the voice signal and the emergency signal transmitted from the outside; and a control unit for controlling the beep sound so as to be outputted at output time intervals which are set to be different according to the reception strength of the received emergency signal.
KMW Inc | Date: 2016-12-23
The present invention relates to an indirect lighting apparatus using an LED, comprising: a case unit provided along the perimeter of the upper part of a wall surface, and having a light emitting opening on a side opposite to the wall surface; a substrate mounted with an LED and provided at the innermost side of the inner bottom surface of the case unit; a light distributing unit for distributing light to the ceiling through the light emitting opening by reflecting the light emitted from the LED; and a cover unit for covering the light emitting opening of the case unit. The present invention uses a simple structure so that the apparatus is fixedly provided on the wall surface, and can be used as main lighting or mood lighting by providing the distributed light capable of selectively illuminating the entire ceiling.
KMW Inc | Date: 2016-06-07
An automatic RF filter tuning system and a method for manufacturing a filter using the same are disclosed. An RF filter tuning system for tuning an RF filter that includes a plurality of cavities having resonance elements and a cover having tuning areas that are positioned correspondingly to the resonance elements, includes a measuring unit configured to measure resonance characteristics of the cavity of the RF filter, a control unit configured to calculate a tuning value of the RF filter based on the resonance characteristics, and a tuning unit configured to tune the RF filter based on the tuning value calculated by the control unit. The tuning unit includes a striking unit configured to strike the tuning area of the cover of the RF filter, thereby adjusting the resonance value and tuning the RF filter.
KMW Inc and Sk Teleys Co. | Date: 2016-03-28
An apparatus for implementing an adaptive sectorization in a DAS (Distributed Antenna System) is provided. In some embodiment of the present disclosure, a DAS that supports an adaptive sectorization has the flexibility of supporting multiple sectors simply with an extension of STM (Sectorization Module) without being affected by the hardware structure. Where no sector splitting is needed, the STM is replaced by a COM (Head-end Combining Module) to provide a simple structure for supporting the sectors.
KMW Inc | Date: 2017-05-03
The present invention relates to an indirect lighting apparatus using an LED, comprising: a case unit (10) provided along the perimeter of the upper part of a wall surface (1), and having a light emitting opening (11) on a side opposite to the wall surface; a substrate (20) mounted with an LED (21) and provided at the innermost side of the inner bottom surface of the case unit (10); a light distributing unit (30) for distributing light to the ceiling through the light emitting opening (11) by reflecting the light emitted from the LED; and a cover unit (40) for covering the light emitting opening of the case unit. The present invention uses a simple structure so that the apparatus is fixedly provided on the wall surface, and can be used as main lighting or mood lighting by providing the distributed light capable of selectively illuminating the entire ceiling.
KMW Inc | Date: 2016-10-04
Some embodiments of the present disclosure provide a transceiver extension device. A transceiver extension device is provided for connection with an enclosure including a cage for a circuit board and a transceiver. The transceiver extension device includes an extension cage configured to accommodate the transceiver, an extension connector configured to be inserted into the cage of the enclosure, and an extension circuit board configured to transmit a signal of a second transceiver to the circuit board in the enclosure.
KMW Inc | Date: 2017-05-17
The present invention relates to a camera-integrated LED lighting device including a body having an open upper surface and providing an accommodation space therein, the body having a bottom surface formed with a rear portion of the bottom surface arranged lower than a front portion of the bottom surface, a power supply, a communication control unit, and an antenna unit accommodated in the body, a plurality of lighting units coupled to the front portion of the bottom surface of the body, a camera unit coupled to the rear portion of the bottom surface of the body, a cover part openably hinge-coupled to the upper surface of the body at one end thereof and having an antenna cover part formed with a part of the cover part protruding upward to accommodate the antenna unit in a protruded state, and a speaker unit coupled to the bottom surface of the body.