Abstract: Disclosed is a method comprising the steps of: receiving an input of content motion data included in VR content; transmitting, to a motion device, motion control data corresponding to the input content motion data to control movement of the motion device; receiving, from a predetermined sensing apparatus, motion detection data corresponding to a movement state of the motion device; selecting a motion sickness-causing section by using a difference between the motion control data and the motion detection data; generating final motion control data according to a preset algorithm such that the level of motion sickness in the selected motion sickness-causing section is minimized during a preset content reproduction section, and storing the generated final motion control data; and when 3D VR content is reproduced, transmitting, to the motion device, the final motion control data stored in the previous step so as to control the movement of the motion device.

Abstract: Disclosed is a method comprising the steps of: receiving an input of content motion data included in VR content; transmitting, to a motion device, motion control data corresponding to the input content motion data to control movement of the motion device; receiving, from a predetermined sensing apparatus, motion detection data corresponding to a movement state of the motion device; selecting a motion sickness-causing section by using a difference between the motion control data and the motion detection data; generating final motion control data according to a preset algorithm such that the level of motion sickness in the selected motion sickness-causing section is minimized during a preset content reproduction section, and storing the generated final motion control data; and when 3D VR content is reproduced, transmitting, to the motion device, the final motion control data stored in the previous step so as to control the movement of the motion device.

Abstract: A high efficiency power control device for a radio transmitter of a radio communication system is provided which reduces noise, current consumption and the generation of spurious signals. The transmitter has a drive amplifier, a power amplifier and a duplexer. The power control device includes a divider for dividing an output of the drive amplifier into first and second power signals at a same rate. A switching element transfers the second power signal to the duplexer in response to a first control signal. The power amplifier is enabled in response to a second control signal. A control signal generator generates the first and second control signals. Further, the control signal generator activates the first control signal to enable the switching element and inactivates the second control signal to disable the power amplifier, when the transmitter transmits a low power signal.