Abstract: To realize a compact device that detects phase or controls phase or an amplitude with high sensitivity, a signal controller includes: a linear conductor having a first end fixed to a negative electrode and a second end serving as a free end; a positive electrode facing the free end with a small gap therebetween; a first signal source that applies a voltage between the negative electrode and the positive electrode, the voltage applied being variable; a driving electrode that applies an electric field to a space around the conductor, the electric field having a component perpendicular to the lengthwise direction of the conductor; and a second signal source that applies an AC signal to the driving electrode. The signal processor can be a device for controlling or modulating phase or amplitude.

Abstract: To realize a compact device that detects phase or controls phase or an amplitude with high sensitivity, a signal controller includes: a linear conductor having a first end fixed to a negative electrode and a second end serving as a free end; a positive electrode facing the free end with a small gap therebetween; a first signal source that applies a voltage between the negative electrode and the positive electrode, the voltage applied being variable; a driving electrode that applies an electric field to a space around the conductor, the electric field having a component perpendicular to the lengthwise direction of the conductor; and a second signal source that applies an AC signal to the driving electrode. The signal processor can be a device for controlling or modulating phase or amplitude.

Abstract: A signal reproduction apparatus reproduces, from an input signal containing a weak signal which is a piece of transmission information and noise superimposed thereon, the weak signal through use of a stochastic resonance phenomenon. The apparatus includes N nonlinear elements NL1-NLN (N is a natural number equal to or greater than 2) which receive N reception signals R (split signals) split to N branch lines L1-LN, and output nonlinear output signals NLO1-NLON; N delay elements D1-DN which delay the nonlinear output signals by different times, respectively; and a combiner which combines delay signals DS1-DSN output from the delay elements D1-DN. The correlation among the noise components contained in the delay signals DS1-DSN obtained by delaying the nonlinear output signal is extremely small, and the correlation of the weak signal is large.

Abstract: A signal reproduction apparatus reproduces, from an input signal containing a weak signal which is a piece of transmission information and noise superimposed thereon, the weak signal through use of a stochastic resonance phenomenon. The apparatus includes N nonlinear elements NL1-NLN (N is a natural number equal to or greater than 2) which receive N reception signals R (split signals) split to N branch lines L1-LN, and output nonlinear output signals NLO1-NLON; N delay elements D1-DN which delay the nonlinear output signals by different times, respectively; and a combiner which combines delay signals DS1-DSN output from the delay elements D1-DN. The correlation among the noise components contained in the delay signals DS1-DSN obtained by delaying the nonlinear output signal is extremely small, and the correlation of the weak signal is large.

Abstract: A mobile radio communication system estimates the positional relationship between an own moving terminal and another moving terminal around a view obstruction. If the absolute value of the difference between detected reception power levels is lower than a first power threshold value, the own moving terminal determines that the other moving terminal is positioned within the visual range of the own moving terminal, the distance from the own moving terminal to the other moving terminal being shorter than a predetermined distance BP, or that the other moving terminal is positioned outside thereof, the distance to the visual range of the own moving terminal being shorter than the predetermined distance BP. Also if the absolute value is higher than or equal to the first power threshold value, the own moving terminal determines in a similar manner.

Abstract: A mobile radio communication system estimates the positional relationship between an own moving terminal and another moving terminal around a view obstruction. If the absolute value of the difference between detected reception power levels is lower than a first power threshold value, the own moving terminal determines that the other moving terminal is positioned within the visual range of the own moving terminal, the distance from the own moving terminal to the other moving terminal being shorter than a predetermined distance BP, or that the other moving terminal is positioned outside thereof, the distance to the visual range of the own moving terminal being shorter than the predetermined distance BP. Also if the absolute value is higher than or equal to the first power threshold value, the own moving terminal determines in a similar manner.