Abstract: An object of the present invention is to mitigate an influence of a physical quantity other than strain of a tire on a measurement result of a strain sensor and to improve measurement accuracy of the strain sensor. A strain amount detection device according to the present invention calculates an estimation value of a load applied to a tire by using data describing a relationship among an actually measured strain amount, a tire air pressure, a vehicle speed, a tire temperature, and a tire load.

Abstract: An adaptive equalizer includes: a speculative equalization circuit which operates a plurality of first tap coefficients with respect to input data and selects operation data corresponding to the input data from a plurality of operation data obtained by the operation; and an adaptive equalization circuit which generates the plurality of first tap coefficients, on the basis of the input data.

Abstract: An adaptive equalizer includes: a speculative equalization circuit which operates a plurality of first tap coefficients with respect to input data and selects operation data corresponding to the input data from a plurality of operation data obtained by the operation; and an adaptive equalization circuit which generates the plurality of first tap coefficients, on the basis of the input data.

Abstract: There is provided a waveform equalization circuit with pulse width modulation that includes pulse-width adjust-level generation circuits PWCLC1a, PWCLC2a, for generating a pulse-width adjust-level VCNT on the basis of preceding input data units Din_P, Din_N, respectively, pulse-width adjustment circuits PWCC1a, PWCC2a, for adjusting a pulse-width according to VCNT, respectively, and a waveform shaping circuit WAC for shaping a waveform of an output signal from each of the pulse-width adjustment circuits. The pulse-width adjustment circuit has a driving power to be controlled according to a consecutive bits count of each of the preceding input data units, and varies transition time of each of output data units Do1_P, Do1_N, thereby adjusting the pulse width.

Abstract: There is provided a waveform equalization circuit with pulse width modulation that includes pulse-width adjust-level generation circuits PWCLC1a, PWCLC2a, for generating a pulse-width adjust-level VCNT on the basis of preceding input data units Din_P, Din_N, respectively, pulse-width adjustment circuits PWCC1a, PWCC2a, for adjusting a pulse-width according to VCNT, respectively, and a waveform shaping circuit WAC for shaping a waveform of an output signal from each of the pulse-width adjustment circuits. The pulse-width adjustment circuit has a driving power to be controlled according to a consecutive bits count of each of the preceding input data units, and varies transition time of each of output data units Do1_P, Do1_N, thereby adjusting the pulse width.