Abstract: A function unit having easy exchangeability in a dual wiring system is provided. The function unit is detachably connected to a gate device mounted in a wall surface of a structure, and connected to both of an electric power line and an information line previously installed in the structure. The function unit has at least one of functions for supplying electric power from the electric power line, outputting information from the information line and inputting information into the information line when connected with the gate device. The function unit has a module connector, which is configured to simultaneously establish both of supplying the electric power from the gate device to the function unit, and making a signal transmission between the gate device unit and the function unit when connected to a module port formed at the gate device. To improve function expandability, an additional function unit may be detachably connected to the function unit.

Abstract: A DC to DC converter includes an input terminal, an output terminal, first and second switches, an inductor, a smoothing unit, a first impedance element, a first resistor element, an operational amplifier and a control unit. The first switch is connected to the input terminal. The second switch is connected to the first switch and a ground terminal. The inductor is connected to the first switch and the output terminal. The smoothing unit is connected to the inductor and the ground terminal. The first impedance element is connected to the smoothing unit. The first resistor element is connected in series with the first impedance element. The operational amplifier is connected to the first impedance element. Reference voltage is added to the operational amplifier. The control unit controls the first and second switches according to a control signal outputted from the operational amplifier.

Abstract: A base unit suitable to improve easy exchangeability of a function unit in a dual wiring system is provided. The base unit is mounted in a wall surface of a structure, and connected to both of an electric power line and an information line previously installed in the structure. The base unit has a module port, which is detachably connected to a module connector of the function unit to simultaneously establish both of supplying the electric power from the base unit to the function unit, and making a signal transmission between the base unit and the function unit, thereby enabling the function unit to provide at least one of functions for supplying electric power from the electric power line, outputting information from the information line and inputting information into the information line when connected with the base unit.

Abstract: A common resistor is connected to load impedances that convert differential currents respectively generated by current sources into differential voltages. A constant current generated by the. current sources is supplied to the common resistor to cause the common resistor to generate an in-phase current and set a common potential.

Abstract: A dual wiring system which has improved easy exchangeability and function expandability of function unit, and is capable of constructing a higher-order system by controlling plural function units in a coordinated fashion. A plurality of base units are mounted in wall surfaces of a building structure, and connected to both of an electric power line and an information line installed in the building structure. A function unit is detachably connected to each of the base units, and provides at least one of functions for supplying electric power from the electric power line, outputting information from the information line, and inputting information into the information line. A control unit is detachably connected to the function unit or the base unit, and controls at least two of the function units connected to the electric power line and the information line through the base unit(s) in a coordinated fashion.

Abstract: According to an embodiment of the invention, there is provided a digital/analog converter includes: a decoder that converts a (n?1)-phase input digital signal to a n-phase output digital signal; and a signal generating unit that generates analog signals according to the n-phase output digital signal.

Abstract: A comparator includes a first inverter which is inserted between a power source terminal and one end of a first variable resistor, includes a first FinFET provided with a first gate terminal for receiving a positive phase output signal, and a second gate terminal for receiving a clock signal changing between a first level and a second level, inverts the positive phase output signal, and outputs a negative phase output signal, and a second inverter which is inserted between the power source terminal and one end of a second variable resistor, includes a second FinFET provided with a third gate terminal for receiving the negative phase output signal, a fourth gate terminal for receiving the clock signal, and the same polarity as the first FinFET, inverts the negative phase output signal, and outputs the positive phase output signal.

Abstract: A DEM (dynamic element matching) system in which a digital signal is inputted, has a switching circuit which, being equipped with a plurality of switches, each of the plurality of switches is subjected to on/off control based on a switch control signal, receives a first thermometer code in which the total number of logic ones and logic zeros corresponding to the digital signal is “n” and outputs a second thermometer code in which the total number of logic ones and logic zeros is “n” (where “n” is an integer equal to or larger than 2), a latch circuit which latches the second thermometer code output from the switching circuit and outputs the second thermometer code, and a switch control signal generating circuit which generates the switch control signal using the digital signal or the second thermometer code output from the latch circuit and outputs the switch control signal.

Abstract: A sample rate converter includes a multiplexer which multiplexes input signals, an interpolator which interpolates a multiplexed output signal to generate a first feedback signal, a multiplier which multiplies the first feedback signal by a coefficient, a subtracter which subtracts the multiplied signal from the multiplexed input signal, an adder which adds the residual signal and a second feedback signal to sequentially generate integrated signals corresponding to the input signals, respectively, a register circuit configured to individually hold integrated signals, a multiplexer which multiplexes the integrated signals from the register circuit to generate the second feedback signal, a multiplexer which multiplexes the integrated signals from the register circuit to generate a decimation target signal, a decimator which subjects the decimation target signal to decimation to generate the multiplexed output signal, and a discrimination circuit configured to discriminate the multiplexed output signal to genera

Abstract: A sample rate converter includes a multiplexer to select either one of an input signal and a first feedback signal, and to obtain a selected input signal, a decimator performing decimation on an Nth-order integration signal to generate an output signal, an interpolator performing interpolation on the output signal to generate a second feedback signal, a multiplier which multiplies the second feedback signal by a coefficient to generate a multiplication signal, a subtractor which subtracts the multiplication signal from the selected input signal to generate a residual signal, an adder which adds the residual signal to a third feedback signal to sequentially generate 1st-order to Nth-order integration signals, a register circuit configured to hold the integration signals, a multiplexer to select the first feedback signal from the integration signals that the register hold, and a multiplexer to select the third feedback signal from the integration signals that the register hold.

Abstract: A dual wiring system with easy exchangeability of a function unit is provided. A gate device is mounted in a wall surface of a structure, and connected to both of an electric power line and an information line previously installed in the structure. The function unit has at least one of functions for supplying electric power from the electric power line, outputting information from the information line and inputting information into the information line when connected with the gate device. The function unit has a module connector comprised of an electric power connector and an information signal connector, which is detachably connected to a module port of the gate device comprised of an electric power port and an information signal port. To further improve function expandability, an additional function unit can be detachably connected to the function unit.

Abstract: A dual wiring system is provided, which has improved easy exchangeability and function expandability of function unit, and is capable of constructing a higher-order system by controlling plural function units in a coordinated fashion. A plurality of base units are mounted in wall surfaces of a building structure, and connected to both of an electric power line and an information line installed in the building structure. The function unit is detachably connected to each of the base units, and provides at least one of functions for supplying electric power from the electric power line, outputting information from the information line, and inputting information into the information line. A control unit is detachably connected to the function unit or the base unit, and controls at least two of the function units connected to the electric power line and the information line through the base unit(s) in a coordinated fashion.

Abstract: Disclosed is an AD converter including: a first conversion stage including a quantizing part to generate m parallel pieces of quantized signals from m pieces of input analog signals representing n-dimensional vectors (n?m?2n), a decoding part to generate m pieces of decoded analog signals from the m parallel pieces of quantized signals, and a residual amplifying part to output m pieces of amplified residual signals by multiplying respective differences between each of the m pieces of analog signals and each of the m pieces of decoded analog signals; a second conversion stage including a quantizing part to generate m parallel pieces of quantized signals from the m pieces of amplified residual signals; and a synthesizing part to generate m parallel pieces of digital signals by synthesizing each of the quantized signals in the first conversion stage and in the second conversion stage at each parallel position.

Abstract: A dual wiring system with improved function expandability is provided. A base unit is mounted in a wall surface of a structure, and connected to both of an electric power line and an information line previously installed in the structure. Each of function units has at least one of functions for providing electric power from the electric power line, outputting information from the information line and inputting information into the information line when connected with the base unit. The base unit is detachably connected with one of the function units by use of a joining member, so that electric power is supplied from the base unit to the function unit through a power transmission means, and a signal transmission between the base unit and the function unit is obtained through a signal transmission means.

Abstract: The sample rate converter includes a synthesizing unit which synthesizes an input signal sampled with frequency fs with a feedback signal of the frequency fs, in a frequency band from 0 to fs/N (where N indicates a natural number), with a gain greater than at least 1, to generate a synthesized signal, a downsampler which downsamples the synthesized signal to obtain an output signal of sample rate fs/N, and an upsampler which upsamples the output signal to generate the feedback signal.

Abstract: A function unit having easy exchangeability in a dual wiring system is provided. The function unit is detachably connected to a gate device mounted in a wall surface of a structure, and connected to both of an electric power line and an information line previously installed in the structure. The function unit has at least one of functions for supplying electric power from the electric power line, outputting information from the information line and inputting information into the information line when connected with the gate device. The function unit has a module connector, which is configured to simultaneously establish both of supplying the electric power from the gate device to the function unit, and making a signal transmission between the gate device unit and the function unit when connected to a module port formed at the gate device. To improve function expandability, an additional function unit may be detachably connected to the function unit.

Abstract: A comparator includes a first inverter which is inserted between a power source terminal and one end of a first variable resistor, includes a first FinFET provided with a first gate terminal for receiving a positive phase output signal, and a second gate terminal for receiving a clock signal changing between a first level and a second level, inverts the positive phase output signal, and outputs a negative phase output signal, and a second inverter which is inserted between the power source terminal and one end of a second variable resistor, includes a second FinFET provided with a third gate terminal for receiving the negative phase output signal, a fourth gate terminal for receiving the clock signal, and the same polarity as the first FinFET, inverts the negative phase output signal, and outputs the positive phase output signal.

Abstract: A D/A converter includes a plurality of current sources configured to be on or off according to input digital data; a constant voltage source configured to apply a constant voltage to the current sources; current supply wirings provided between the constant voltage source and the respective current source, the current supply wirings respectively having equal length from the constant voltage source to the respective current source; ground-side wirings summing up output currents from the plurality of current sources; and output terminals connected to the ground-side wirings, the output terminals outputting analogue data corresponding to the input digital data.

Abstract: A transistor switch circuit includes: a MOS transistor in which a channel is formed when a gate-source voltage is zero; and a voltage supply part which is connected to a gate of the MOS transistor to supply the gate with a voltage for turning off the MOS transistor.

Abstract: According to an embodiment of the invention, there is provided a digital/analog converter includes: a decoder that converts a (n?1)-phase input digital signal to a n-phase output digital signal; and a signal generating unit that generates analog signals according to the n-phase output digital signal.