Abstract: The train control system includes: an on-board device 3 mounted on a train 2 traveling on a predetermined track 1; a vehicle radio set 4 that transmits and receives information of the on-board device 3; wayside radio sets 5 each of which is disposed at a predetermined location on the ground to transmit information to and receive information from the vehicle radio set 4 information; a ground device 8 placed by the track 1 and connected to the wayside radio set 5; an operation controlling device 12 that transmits operation information of the train 2 to the ground device 8; and an interlocking device 11 that performs an operation control of a turnout 6 for switching tracks. The ground device 8 detects the location of the train 2 on the basis of wireless propagation time between the vehicle radio set 4 and the wayside radio set 5, receives entering track information of the train 2 from the operation controlling device 12, and controls an interval between a preceding train 2 and a following train 2.

Abstract: With respect to each of trains, a ground device 6 detects a train location in the control section on the basis of a propagation time of a radio wave between a vehicle radio set 4 and a wayside radio set 5, in the case in which the ground device 6 determines that the number of trains has reached the controllable number of trains or there is the possibility that the number of trains reaches the controllable number of trains in its own control section, a ground device 6 disposed in an adjacent control section to the control section in which the number of trains is reaching the controllable number of trains, when a train 2 scheduled to travel toward the control section stops in a station 8, prevents departure of the train 2 scheduled to pass through the border of the control section by making the train 2 wait at the station 8.

Abstract: A soft decision value generation circuit capable of reducing amount of calculation and hardware scale for generating a soft decision value. The soft decision value generation circuit includes: a phase rotation unit rotating phases of received symbols after coherent detection; addition units calculating, by using the phase-rotated received symbols, absolute values of soft decision values for soft decision value candidates restricted in advance; minimum value selection units selecting minimum values out of the absolute values of the soft decision values; sign reflection units reflecting, based on the phases of the received symbols after the phase rotation, sign information to the minimum values; and soft decision value correction units multiplying outputs of the sign reflection units by a coefficient depending on a noise variance value and an amplitude value of a modulation symbol.

Abstract: The train control system includes: an on-board device 3 mounted on a train 2 traveling on a predetermined track 1; a vehicle radio set 4 that transmits and receives information of the on-board device 3; wayside radio sets 5 each of which is disposed at a predetermined location on the ground to transmit information to and receive information from the vehicle radio set 4 information; a ground device 8 placed by the track 1 and connected to the wayside radio set 5; an operation controlling device 12 that transmits operation information of the train 2 to the ground device 8; and an interlocking device 11 that performs an operation control of a turnout 6 for switching tracks. The ground device 8 detects the location of the train 2 on the basis of wireless propagation time between the vehicle radio set 4 and the wayside radio set 5, receives entering track information of the train 2 from the operation controlling device 12, and controls an interval between a preceding train 2 and a following train 2.

Abstract: With respect to each of trains, a ground device 6 detects a train location in the control section on the basis of a propagation time of a radio wave between a vehicle radio set 4 and a wayside radio set 5, in the case in which the ground device 6 determines that the number of trains has reached the controllable number of trains or there is the possibility that the number of trains reaches the controllable number of trains in its own control section, a ground device 6 disposed in an adjacent control section to the control section in which the number of trains is reaching the controllable number of trains, when a train 2 scheduled to travel toward the control section stops in a station 8, prevents departure of the train 2 scheduled to pass through the border of the control section by making the train 2 wait at the station 8.

Abstract: A soft decision value generation circuit capable of reducing amount of calculation and hardware scale for generating a soft decision value. The soft decision value generation circuit includes: a phase rotation unit rotating phases of received symbols after coherent detection; addition units calculating, by using the phase-rotated received symbols, absolute values of soft decision values for soft decision value candidates restricted in advance; minimum value selection units selecting minimum values out of the absolute values of the soft decision values; sign reflection units reflecting, based on the phases of the received symbols after the phase rotation, sign information to the minimum values; and soft decision value correction units multiplying outputs of the sign reflection units by a coefficient depending on a noise variance value and an amplitude value of a modulation symbol.

Abstract: A recording medium driving apparatus to be used with a recording medium comprises a unit having a driving section receiving a loaded recording medium recording information in the recording medium and/or reproducing the information recorded in the recording medium, and a holding member holding the recording medium and movable in an inserting direction toward the driving section and in a discharging direction leaving the driving section together with the recording medium; an elastic support member supporting the unit against a fixed section; an intermediate member movably supported by the fixed section and connected to the holding member; and a driving member connected to the intermediate member and causing, by the moving force thereof, the holding member to move in the inserting direction or in the discharging direction via the intermediate member; wherein a transmitting section for transmitting a driving force of the driving member to the intermediate member and a relief section for making the intermediate me

Abstract: The present invention provides a recording medium driving apparatus comprising an enclosure having an insertion port for insertion and discharge of a recording medium; a holder holding the recording medium inserted through the insertion port; a driving section having a turntable onto which the recording medium held by the holder is mounted and a locating member for positioning the recording medium; a holder transfer mechanism for transferring the holder in a first direction approaching the driving section and in a second direction leaving the driving section; an elastic support member elastically supporting the driving section in the enclosure; and a constraining mechanism constraining transfer of the driving section; and before the holder having the recording medium inserted therein is transferred by the holder transfer mechanism in the first direction, or after beginning moving in the first direction and before a recording medium inserted in an abnormal direction or posture comes into contact with the turnt