Abstract: An information processing apparatus includes a memory and a processor coupled to the memory. The processor configured to perform causing a display unit of an operation apparatus to display information for designating a playback target content, accepting the designation of the playback target content from the operation apparatus, based on an operation about the information for designating the content on the operation apparatus, and playing back the content with the designation being accepted by a playback output unit of the information processing apparatus.

Abstract: A current detection unit that monitors changes in two types of voltage produced by the voltage control unit, and detects and abnormal current flowing due to a potential between the two types of the voltages at both ends of the voltage control unit and an HPG control that receives a control signal of a constant voltage supplied from the information processing device, and transmits a HPG signal to the information processing device based on the abnormal current detected by the current detection unit and the control signal, wherein the HPG signal is a signal indicating a supply state of the direct current power voltage.

Abstract: A method for controlling a backlight for illuminating a transmissive display panel includes measuring an amount of current supplied to the transmissive display panel, and controlling brightness caused by the backlight source on the basis of the amount of the current. Further the method includes storing data of a threshold value to be compared with the amount of the current, and controlling the brightness to decrease when the transmissive panel is a normally white type and the amount of the current is smaller than the threshold value data or when the transmissive panel is a normally black type and the amount of the current is larger than the threshold value data.

Abstract: A power monitoring and control apparatus for a display device has a signal receiving unit that receives a display signal from a information processing device, a power conversion unit that converts alternating current power into direct current power, a voltage control unit that produces a desired direct voltage based n the direct current power, A current detection unit that monitors changes in two types of voltage produced by the voltage control unit, and detects and abnormal current flowing due to a potential between the two types of the voltages at both ends of the voltage control unit and an HPG control that receives a control signal of a constant voltage supplied from the information processing device, and transmits a HPG signal to the information processing device based on the abnormal current detected by the current detection unit and the control signal, wherein the HPG signal is a signal indicating a supply state of the direct current power voltage.

Abstract: In the size measurement of steel sections, a pair of two-dimensional rangefinders and a pair of one-dimensional rangefinders are arranged so as to sandwich a steel section consisting of a pair of flange portions and a web portion in a widthwise direction of the flange portion and face to each other, whereby a vertical distance ranging from the two-dimensional rangefinder to the flange portion and a vertical distance ranging from the one-dimensional rangefinder to the web portion are measured, respectively to calculate a deviation at center, a flange width and a web thickness from the above measured values. In this case, a laser rangefinder is used as each of the two-dimensional rangefinder and one-dimensional rangefinder.