Abstract: A transmission device and reception device for digital data that have excellent resistance to noise are provided. An encoder (11-1) of this disclosure, included in a transmission device (1) of this disclosure, applies LDPC encoding to digital data using a unique check matrix for each code rate by using a check matrix in which, taking a check matrix initial value table established in advance for each code rate at a code length of 44880 bits as initial values, 1 entries of a partial matrix corresponding to an information length appropriate for a code rate of 93/120 are allocated in the column direction over a cycle of 374 columns. A demodulator (23) of this disclosure, included in a reception device (2) of this disclosure, decodes digital data encoded by the encoder (11-1).

Abstract: Disclosed is a MIMO system including a transmitter and a receiver, in which an overall BER characteristic is improved. The transmitter (1) maps data, distributed among transmit antennas, onto an IQ plane to generate carrier symbols, and then, applies an inter-polarization interleave processing in a time direction to the carrier symbols between the transmit antennas, to generate OFDM signals. Receiving the OFDM signals, the receiver (2) demodulates the OFDM signals to generate complex baseband signals, and after that, applies a first deinterleave processing in a time direction to the complex baseband signals to generate time deinterleaved data. Further, the receiver (2) applies a MIMO separation processing to the time deinterleaved data to generate a plurality of sets of MIMO separated data and applies a second deinterleave processing between the receive antennas to the plurality of sets of MIMO separated data, so as to generate carrier symbols.

Abstract: A power transmission device that includes a transmission including a plurality of engagement elements for transmitting power from a motor to axles; a case to accommodate the transmission; a hydraulic control device to control hydraulic pressure to the engagement elements; a hydraulic oil reservoir that stores hydraulic oil; and a first pump that is operated by the power from the motor and that suctions the hydraulic oil from the hydraulic oil reservoir through a strainer and supplies the hydraulic oil to the hydraulic control device.

Abstract: A hydraulic control device for an automatic transmission, wherein when the first switching valve is switched to the first state while the second switching valve is in the third state, the reverse range pressure applied from the reverse range pressure input port of the second switching valve can be supplied from the first output port to the hydraulic servo for the first friction engagement element via the fourth output port of the second switching valve and the first input port of the first switching valve, and when a shift range is shifted from a neutral range to a reverse range, the second switching valve is in the fourth state, and the first switching valve is switched from the first state to the second state, so that the reverse range pressure applied to the reverse range pressure input port is cut off by the second switching valve.

Abstract: A range switching device for switching supply and non-supply of a source pressure based on a hydraulic pressure from a hydraulic pressure generating source to a parking device, the parking device being switched into a parking release state while the source pressure is supplied thereto and being switched into a parking state while the source pressure is not supplied thereto.

Abstract: A hydraulic control device has: a modulator valve using oil pressure from a hydraulic source for adjusting a modulator pressure; driving and driven-side hydraulic actuator control valves controlling hydraulic oil from the source to driving and driven-side hydraulic actuators; a driving-side control oil pressure adjusting electromagnetic valve using the modulator pressure for outputting a control oil pressure controlling the driving-side control valve; and a driven-side control oil pressure adjusting electromagnetic valve for outputting a control oil pressure controlling the driven-side control valve, the hydraulic control device including a failsafe valve switched from a normal to a failure position based on a failure disabling electric control for the driving-side and driven-side electromagnetic valves, the modulator valve making the modulator pressure lower than a value at the normal position based on an output switching pressure generated due to switching the failsafe valve from the normal to the failure p

Abstract: Disclosed is a MIMO system including a transmitter and a receiver, in which an overall BER characteristic is improved. The transmitter (1) maps data, distributed among transmit antennas, onto an IQ plane to generate carrier symbols, and then, applies an inter-polarization interleave processing in a time direction to the carrier symbols between the transmit antennas, to generate OFDM signals. Receiving the OFDM signals, the receiver (2) demodulates the OFDM signals to generate complex baseband signals, and after that, applies a first deinterleave processing in a time direction to the complex baseband signals to generate time deinterleaved data. Further, the receiver (2) applies a MIMO separation processing to the time deinterleaved data to generate a plurality of sets of MIMO separated data and applies a second deinterleave processing between the receive antennas to the plurality of sets of MIMO separated data, so as to generate carrier symbols.

Abstract: Disclosed is a MIMO system including a transmitter and a receiver, in which an overall BER characteristic is improved. The transmitter (1) maps data, distributed among transmit antennas, onto an IQ plane to generate carrier symbols, and then, applies an inter-polarization interleave processing in a time direction to the carrier symbols between the transmit antennas, to generate OFDM signals. Receiving the OFDM signals, the receiver (2) demodulates the OFDM signals to generate complex baseband signals, and after that, applies a first deinterleave processing in a time direction to the complex baseband signals to generate time deinterleaved data. Further, the receiver (2) applies a MIMO separation processing to the time deinterleaved data to generate a plurality of sets of MIMO separated data and applies a second deinterleave processing between the receive antennas to the plurality of sets of MIMO separated data, so as to generate carrier symbols.

Abstract: A jump shift of an automatic transmission with multiple shift speeds such as, e.g., ten forward speeds involves operation of many engagement elements. The shifting operation for the jump shift is therefore complicated, making it difficult for the automatic transmission to respond quickly. After shifting to the seventh speed as a direct coupling speed is completed by engaging three clutches C1, C3, C4, the remaining other clutch C2 is also engaged at the seventh speed. In the case of a jump shift, e.g., a shift from the seventh speed to the fifth speed, shifting to the fifth speed is completed by disengaging the clutch C1 and performing control to disengage the clutch C3 and to engage a brake B1 with the remaining other clutch C2 kept in the engaged state. This facilitates the shifting operation from the direct coupling speed and allows the automatic transmission to respond quickly.

Abstract: A hydraulic control device that includes a second switching valve that is switchable between a third position in which the forward range pressure input from the first switching valve is output to the shift controller and the reverse range pressure is blocked when the second signal pressure is off and a fourth position in which the reverse range pressure input from the first switching valve is output to the shift controller and the forward range pressure is blocked when the second signal pressure is on.

Abstract: In a sleeve, two input ports are formed as ports that receive a discharge pressure of an electromagnetic pump, and a drain port connected to a drain oil passage is formed on the same circumference as that on which the input port is formed, so as to have a smaller opening area than the input port and an output port connected to an oil passage. The axial length of the second land is set so that the input port can be closed by the second land when a signal pressure is equal to or higher than a set pressure, and that the input port and the drain port can be closed by the second land when the signal pressure is lower than the set pressure.

Abstract: A transmission device and reception device for digital data that have excellent resistance to noise are provided. An encoder (11-1) of this disclosure, included in a transmission device (1) of this disclosure, applies LDPC encoding to digital data using a unique check matrix for each code rate by using a check matrix in which, taking a check matrix initial value table established in advance for each code rate at a code length of 44880 bits as initial values, 1 entries of a partial matrix corresponding to an information length appropriate for a code rate of 93/120 are allocated in the column direction over a cycle of 374 columns. A demodulator (23) of this disclosure, included in a reception device (2) of this disclosure, decodes digital data encoded by the encoder (11-1).

Abstract: A power transmission device that is mounted on a vehicle and provided with a transmission having a plurality of engagement elements for transmitting power from a motor to an axle, a case that accommodates the transmission, and a hydraulic control device that controls hydraulic pressure to the plurality of engagement elements.

Abstract: A hydraulic control device that includes a solenoid valve capable of supplying a first engagement pressure to the first engagement element; and a first cut valve that is interposed in an oil passage from the solenoid valve to the first engagement element and is capable of cutting off supply of a hydraulic pressure to the first engagement element, wherein only the first engagement pressure and a second engagement pressure serve as hydraulic pressures that act such that the first cut valve cuts off the supply of the hydraulic pressure to the first engagement element, and the first cut valve is switched so as to cut off the supply of the hydraulic pressure to the first engagement element when the first engagement pressure and the second engagement pressure are simultaneously supplied to the first engagement element and the second engagement element, respectively.

Abstract: The present invention provides a control unit. When the control unit performs shifting from a state in which a first shift speed is established by supplying engagement pressures to both hydraulic oil chambers and engaging a predetermined engagement element to a second shift speed by switching engagement and disengagement states of engagement elements other than the predetermined engagement element (Step S1), the control unit reduces the supply of the engagement pressure to one of the two hydraulic oil chambers to a level lower than that in the state in which the first shift speed is established (Step S3).

Abstract: A hydraulic control apparatus, wherein the first switching valve receives an input of one of the hydraulic pressure from the first electromagnetic valve device and the predetermined hydraulic pressure from the third switching valve, as a switching signal pressure, the first switching valve is switched from the first state to the second state in response to the input of the switching signal pressure, and the first switching valve is held in the second state, and the second switching valve receives an input of one of the hydraulic pressure from the first electromagnetic valve device and the predetermined hydraulic pressure from the third switching valve, as a holding pressure for holding the normal supply state.

Abstract: A hydraulic control device that includes a normally closed first solenoid valve, a first check valve, a failsafe valve, and a second check valve, wherein the first movable member of the first check valve is biased to cut off the communication between the first input port and the first drain port in case of the failure in which no current is applied to the first solenoid valve.

Abstract: A hydraulic control device that includes a solenoid valve capable of supplying a first engagement pressure to the first engagement element; and a first cut valve that is interposed in an oil passage from the solenoid valve to the first engagement element and is capable of cutting off supply of a hydraulic pressure to the first engagement element, wherein only the first engagement pressure and a second engagement pressure serve as hydraulic pressures that act such that the first cut valve cuts off the supply of the hydraulic pressure to the first engagement element, and the first cut valve is switched so as to cut off the supply of the hydraulic pressure to the first engagement element when the first engagement pressure and the second engagement pressure are simultaneously supplied to the first engagement element and the second engagement element, respectively.

Abstract: A modulator, demodulator, transmission device, and reception device for digital data that have excellent resistance to noise are provided. A modulator according to one aspect of this disclosure includes a modulation mapper (15) that performs 16APSK mapping at a radius ratio of 2.87 when the LDPC code rate is 93/120. A modulator according to another aspect of this disclosure includes a modulation mapper (15) that performs 32APSK mapping at a second inner circle to first inner circle radius ratio of 2.87 and an outer circle to first inner circle radius ratio of 5.33 when the LDPC code rate is 93/120. The modulator is included in a transmission device (1) according to this disclosure. A demodulator according to this disclosure includes a quadrature detector (21) that performs demodulation corresponding to the modulator. The demodulator is included in a reception device (2) according to this disclosure.

Abstract: A hydraulic control device for an automatic transmission where the spool is locked at the first position and the switching pressure can regulate the belt holding force of the primary pulley or the secondary pulley without switching a position of the spool when the engagement pressure is supplied to the second working oil chamber, and the spool is not locked at the first position and the switching pressure can switch the spool to the second position against the urging member when the engagement pressure is not supplied to the second working oil chamber.