Abstract: The present invention is directed to a multi-band cable antenna.

Abstract: The present invention is directed to an internal multi-band antenna with multiple layers. The internal multi-band antenna comprises a main radiation patch for forming an upper side of the antenna, one side of the main radiation patch connected to a feeder, the main radiation patch including a plurality of strips in the same plane and formed by a folded slit patch of maze type; and at least one auxiliary radiation patch bent downwardly at one side of an edge of the main radiation patch and formed in parallel to the main radiation patch between the main radiation patch and a feeder ground plane.

Abstract: A digital broadcast transmission system and a signal processing method thereof offers improved receptability. The digital broadcast transmission system includes an error correction encoding unit for encoding an input signal according to a predetermined error correction method; a synchronous signal inserting unit for inserting a synchronous signal in the input signal after the error correction encoding; a first pilot inserting unit for inserting a first pilot signal in the input signal which contains the synchronous signal therein; a second pilot inserting unit for inserting a plurality of second pilot signals in the input signal which contains the first pilot signal therein; a pulse shaping filter for pulse shaping the input signal with the first and the second pilot signals according to a predetermined roll-off factor; and a radio frequency (RF) unit for transmitting the pulse-shaped input signal to a transmission channel band.

Abstract: Digital broadcasting transmission/reception systems capable of improving the synchronization acquisition and the equalization performance, and signal processing methods thereof. The digital broadcasting transmission/reception systems include a FEC encoder encoding an incoming signal according to a FEC scheme, a sync signal insertion unit inserting into the encoded signal a segment sync signal including modified segment syncs, a pilot insertion unit inserting a pilot signal into the sync-inserted signal, a pulse shaping filter pulse-shaping the pilot-inserted signal with a roll-off factor, and a RF unit transmitting the pulse-shaped signal through a transmission channel band. The modified segment sync includes a predetermined number of sync signals, and an average of correlation values with respect to the predetermined number of the sync signals has an auto-correlation property.

Abstract: A digital broadcasting transmission/reception system having an improved receiving performance and a signal processing method thereof. The transmission system includes a FEC encoder encoding an incoming signal according to a certain FEC scheme, a sync insertion unit inserting a sync into the encoded signal, a hidden pilot insertion unit inserting a hidden pilot into the sync-inserted signal, a pilot insertion unit inserting a pilot tone into the hidden-pilot-inserted signal, a pulse shaping filter pulse-shaping the pilot-tone-inserted signal with a certain roll-off factor, and a RF unit transmitting the pulse-shaped signal through a transmission channel band. Performances of equalization and synchronization acquirement can be enhanced in multipath conditions by utilizing the transmission system containing the hidden pilot.

Abstract: A device for removing an interference signal with a different characteristic included in input signals and an interference signal removing method are disclosed. The device for removing an interference signal comprises an IIR notch filter for generating a notch to remove the signal with a different characteristic included in the input signals, a frequency tracking unit for tracking a frequency in the frequency domain for the signal with a different characteristic included in the input signals to provide a position value of the notch, and a power ratio calculation unit for calculating a power ratio of the signal different from the input signals on the characteristic and providing a depth value of the notch set in correspondence with the calculated power ratio, wherein the IIR notch filter removes the signal with a different characteristic using the position value and the depth value. Accordingly, the signal with a different characteristic included in the input signals can be correctly removed.

Abstract: Disclosed is a method for removing sludge in a crude oil storage tank by use of thermal oil discharged from a distillation tower of an oil refinery, such as atmospheric residue, vacuum residue, or vacuum gas oil, and recovering oil having various applications by separating inorganics therefrom. The method is advantageous in terms of minimizing air pollution because of utilizing a closed system, drastically reduced washing time of crude oil storage tank, and continuous removal of the sludge. Additionally, the recovered oil can be provided as fuel oil, marine oil or a feed for secondary treatment processes, such as up-grading processes of heavy oil.

Abstract: Disclosed is a method for removing sludge in a crude oil storage tank by use of thermal oil discharged from a distillation tower of an oil refinery, such as atmospheric residue, vacuum residue, or vacuum gas oil, and recovering oil having various applications by separating inorganics therefrom. The method is advantageous in terms of minimizing air pollution because of utilizing a closed system, drastically reduced washing time of crude oil storage tank, and continuous removal of the sludge. Additionally, the recovered oil can be provided as fuel oil, marine oil or a feed for secondary treatment processes, such as up-grading processes of heavy oil.

Abstract: Disclosed is a multichannel signal receiver which comprises: a descrambler for descrambling scrambled digital satellite broadcasting signals; a signal receiver for receiving and outputting a broadcasting signal; a signal output unit for demultiplexing and demodulating the broadcasting signal, and outputting audio and video signals; a common interface controller for checking whether the broadcasting signal is a paid or a free signal, outputting the broadcasting signal to the signal output unit when the broadcasting signal is a free signal, and outputting the broadcasting signal to the descrambler and outputting the descrambled broadcasting signal to the signal output unit when the broadcasting signal is a paid signal; and a host CPU for controlling the signal receiver, the common interface controller and the signal output unit.

Abstract: The present invention relates to cDNAs encoding murine antibodies against apolipoprotein B-100, the protein moiety of low density lipoprotein(LDL) in human plasma. In addition, the present invention relates to the method of preparation of recombinant antibodies specific for human plasma apolipoprotein B-100 of LDL, and use thereof, for diagnosis and treatment of cardiovascular diseases.

Abstract: The present invention relates to cDNAs encoding murine antibodies against apolipoprotein B-100. In addition, the present invention relates to methods of preparation of recombinant antibodies specific for human plasma apolipoprotein B-100 of LDL, and use thereof, for diagnosis and treatment of cardiovascular diseases.