Abstract: A semiconductor device includes first and second processor cores configured to perform a lock step operation and including first and second scan chains. The semiconductor device further includes a scan test control unit that controls a scan test of the first and second processor cores using the first and second scan chains, and a start-up control unit that outputs a reset signal for bringing the first and second processor cores into a reset state. The start-up control unit outputs an initialization scan request before the start of a lock step operation, and the scan test control unit performs an initialization scan test operation on the first and second processor cores by using an initialization pattern.

Abstract: Disclosed is a rotational laser apparatus capable of setting an obliquity without requiring a high accuracy light receiver or a complex optical system for separating different polarized fluxes. The rotational laser apparatus comprises a plurality of reflected sections provided on a target in a direction transverse to scanning laser beam. The reflected planes is disposed in such a manner that a time series arranging state for pulses of the light receiving signal differs between a case that the scanning laser beam intersects the reflected sections from one side to the other side and a case that the laser beam intersects the reflected sections from the other side to one side, with identical scanning direction of the scanning laser beam, The control part includes a judging circuit for judging an operated direction of the oblique mechanism based on the time series arranging state for pulses of the light receiving signal.

Abstract: Disclosed is a rotational laser apparatus capable of setting an obliquity without requiring a high accuracy light receiver or a complex optical system for separating different polarized fluxes.

Abstract: The present invention relates to a laser irradiating device and a target device, and particularly to a laser irradiating device capable of performing remote control without using a radio remote controller. A plurality of reflective pattern members are prepared wherein combination reflective members respectively composed of reflective portions A for storing the direction of polarization and reflecting it, and polarizing-direction conversion reflective portions C for converting the direction of polarization and reflecting it are arranged. The combination reflective members of the individual reflective pattern members are respectively made different in arrangement from one another. Further, the reflective pattern member corresponding to a command to be transferred to the laser irradiating device reflects identification reflected light corresponding to the command onto the laser irradiating device, whereby the laser irradiating device can be remote-controlled.