Abstract:
Disclosed is an air conditioner with an enhance efficiency. The air conditioner An air conditioner includes: an indoor part for inhaling indoor air to exchange heat with an indoor heat exchanger, and again discharging the heat-exchanged air into an indoor space; an outdoor part for inhaling an outdoor air to exchange heat with an outdoor heat exchanger, and again discharging the heat-exchanged air into an outdoor space; a base partitioned into the outdoor part and the indoor part and loaded on the partitioned outdoor part and indoor part; and a cabinet provided to cover both sides and a rear surface of the outdoor part, and having an insertion guide formed at a lower portion thereof.
Abstract:
The present invention relates to a test tray for a test handler. According to this invention, there is disclosed a technique that an insert loaded in a loading part which is arranged in a matrix pattern in a frame of the test tray allows an amount and direction of free movement thereof to be determined in accordance with a location of the loading part, where the insert is loaded, on the matrix, thereby enabling a thermal expansion or contraction of a match plate or the test tray to be compensated.
Abstract:
A method for transmitting and receiving pilot symbols in an orthogonal frequency division multiplexing (OFDM)-based communication system is provided. Pilot symbols are mapped to pilot tone frequencies assigned to terminals, and even-numbered or odd-numbered pilot symbols are phase-rotated to be orthogonal. An apparatus for transmitting pilot symbols in an OFDM-based communication system is provided. A tone mapping unit maps pilot tone frequencies assigned to terminals onto pilot symbols to be transmitted, and a phase rotation unit phase-rotates either even-numbered or odd-numbered pilot symbols. An apparatus for transmitting pilot symbols in an OFDM-based communication system is provided. A tone mapping unit maps pilot tone frequencies assigned to terminals onto pilot symbols to be transmitted, and a transmission unit stores a signal in a buffer and transmits a first portion of the signal in a first pilot symbol and a second portion of the signal in a second pilot symbol.
Abstract:
A reciprocating compressor includes a case to which a suction pipe and a discharge pipe are respectively connected, having a closed space; a reciprocating motor disposed inside the case, for generating a reciprocating force; a compressing unit receiving the reciprocating force generated from the reciprocating motor, for compressing a fluid; and a separation plate for dividing the closed space of the case into a low pressure portion into which a fluid is sucked through the suction pipe and a high pressure portion from which a fluid compressed in the compressing unit is discharged. Accordingly, the reciprocating compressor cuts off vibration generated from the compressing unit and the reciprocating motor and thus reduce the vibration transmitted to the compressor case and other elements so that noise can be reduced, life spans of other elements can be lengthened, and reliability of the compressor can be improved.
Abstract:
The present invention relates to a printing through a plurality of printer robot systems. Specifically, the invention provides a mobile printer system which prints letters or pictures inputted by a user without being constrained by the printing region through a plurality of mobile printer robots. The present invention comprises a plurality of mobile printer robot systems which have in-built printer functions and a main body which controls the printer operations through a wireless communication with the printer robot system.