Abstract: A coupling channel noise canceling circuit includes a signal detecting unit, a gain setting unit, a cancel signal generating unit, and a noise canceling unit. The signal detecting unit detects a phase difference and a voltage difference between a broadcast RX signal and a noise cancel signal in a set mode. The gain setting unit outputs compensation gain values corresponding to the phase difference and the voltage difference from the signal detecting unit in the set mode. The cancel signal generating unit sets the compensation gain values from the gain setting unit as an amplification gain for amplification of a communication TX signal in the set mode, and amplifies the communication TX signal by a predetermined gain to generate the noise cancel signal in the set mode and an operation mode. The noise canceling unit cancels an interference noise from the broadcast RX signal by using the noise cancel signal from the cancel signal generating unit in the operation mode.

Abstract: Disclosed is apparatus for distinguishing between ground and an obstacle for autonomous mobile vehicle, comprising an upper 2D laser radar 1, a lower 2D laser radar 2, and a processing unit 10, the processing unit 10 comprising a distance data receiving part 11, an inclination calculating part 12, a ground and obstacle determining part 13, and a transmitting part. Also disclosed is a method for distinguishing between ground and an obstacle for autonomous mobile vehicle by using the apparatus for distinguishing between ground and an obstacle for autonomous mobile vehicle of claim 1, in which the detected object is determined as an obstacle when the actual inclination (g) of the detected object is larger than the reference inclination, and as ground when the actual inclination (g) of the detected object is smaller than the reference inclination.

Abstract: A switched current memory cell includes a current source 100 having one end connected to an operation power source (Vdd) stage, a current memory circuit unit 200 that stores an input current; which is inputted in a sampling mode of the current from the current source 100, during a hold mode, maintains the current value stored in the hold mode, and outputs the stored current in an output mode, an input switch SW10 that is turned on in the sampling mode to transfer an input current to the current memory circuit unit 200, and turned off in the hold mode, an output switch SW20 that is turned on in the output mode to output current from the current memory circuit unit 200, and a current cut circuit unit 300 that connects a current path between the operation power source Vdd stage and the current source 100 in the input mode and output mode, and separates the current path between the operation power source Vdd stage and the current source 100 in the hold mode.

Abstract: An apparatus and method for generating femtosecond electron beam are disclosed. The apparatus for generating electron beam by discharging an electron generated via a cathode to an anode includes a transmission window provided at one side of the cathode to allow incident laser to pass therethrough, a pinhole formed on the anode such that the pinhole corresponds to the position of the electron generated from the transmission window, and a focusing unit provided at one side of the cathode and generating an electric field to accelerate and at the same time concentrate the electron to the pinhole. Electrons are simultaneously concentrated and accelerated to the pinhole by an electric field generated by the focusing unit positioned at the cathode to generate femtosecond electron beam.

Abstract: An apparatus and method for monitoring a beam position using an electrooptic effect are disclosed. The apparatus for measuring the position of a charged particle passing through the interior of an accelerator includes: a crystal positioned within the accelerator and allowing laser generated from a laser generating unit to pass therethrough; a polarization unit polarizing the laser that has passed through the crystal; and a measurement unit measuring the polarized state of the polarized laser to monitor the charged particle. The position of the charged particle passing through the interior of the accelerator can be more accurately measured.

Abstract: A switched current memory cell includes: a current source 100 having one end connected to an operation power source (Vdd) stage, a current memory circuit unit 200 that stores an input current; which is inputted in a sampling mode according to current from the current source 100, during a hold mode, maintains the current value stored in the hold mode, and outputs the stored current in an output mode, an input switch SW10 that is turned on in the sampling mode to transfer an input current to the current memory circuit unit 200, and turned off in the hold mode, an output switch SW20 that is turned on in the output mode to output current from the current memory circuit unit 200, and a current cut circuit unit 300 that connects a current path between the operation power source Vdd stage and the current source 100 in the input mode and output mode, and separates the current path between the operation power source Vdd stage and the current source 100 in the hold mode.

Abstract: A coupling channel noise canceling circuit includes a signal detecting unit, a gain setting unit, a cancel signal generating unit, and a noise canceling unit. The signal detecting unit detects a phase difference and a voltage difference between a broadcast RX signal and a noise cancel signal in a set mode. The gain setting unit outputs compensation gain values corresponding to the phase difference and the voltage difference from the signal detecting unit in the set mode. The cancel signal generating unit sets the compensation gain values from the gain setting unit as an amplification gain for amplification of a communication TX signal in the set mode, and amplifies the communication TX signal by a predetermined gain to generate the noise cancel signal in the set mode and an operation mode. The noise canceling unit cancels an interference noise from the broadcast RX signal by using the noise cancel signal from the cancel signal generating unit in the operation mode.