Abstract: A transmission device includes: a weighting synthesizer that generates a first precoded signal and a second precoded signal; a first pilot inserter that inserts a pilot signal into the first precoded signal; a phase changer that applies a phase change of i×?? to the second precoded signal, where i is a symbol number and an integer that is greater than or equal to 0; an inserter that inserts a pilot signal into the phase-changed second precoded signal; and a phase changer that applies a phase change to the phase-changed and pilot-signal-inserted second precoded signal. ?? satisfies ?/2 radians<??<? radians or ? radians<??<3?/2 radians.

Abstract: A colorimeter includes: a colorimetric section that performs colorimetry; a first wireless communicating section that performs first wireless communication according to a first wireless communication standard; a second wireless communicating section that performs second wireless communication according to a second wireless communication standard; and a processor that controls the first wireless communicating section and the second wireless communicating section. The processor transmits colorimetric data acquired by the colorimetry in the first colorimetric mode by the first wireless communication when colorimetry in a first colorimetric mode is performed. The processor also transmits colorimetric data acquired by the colorimetry in the second colorimetric mode by the second wireless communication when colorimetry in a second colorimetric mode is performed.

Abstract: An analyzer in an embodiment includes processing circuitry. The processing circuitry identifies at least a part of a contour of a heart of a subject for an image corresponding to a first cardiac time phase and an image corresponding to a second cardiac time phase that are included in time-series images including the heart of the subject. The processing circuitry calculates, using the information about the identified contours, a first cardiac function parameter representing at least one of a volume or an ejection fraction of a heart chamber and a second cardiac function parameter representing a global strain of a myocardium corresponding to the heart chamber. The processing circuitry causes the first cardiac function parameter and the second cardiac function parameter to be displayed by common operation.

Abstract: An analyzer in an embodiment includes processing circuitry. The processing circuitry identifies at least a part of a contour of a heart of a subject for an image corresponding to a first cardiac time phase and an image corresponding to a second cardiac time phase that are included in time-series images including the heart of the subject. The processing circuitry calculates, using the information about the identified contours, a first cardiac function parameter representing at least one of a volume or an ejection fraction of a heart chamber and a second cardiac function parameter representing a global strain of a myocardium corresponding to the heart chamber. The processing circuitry causes the first cardiac function parameter and the second cardiac function parameter to be displayed by common operation.