Abstract: A control apparatus is to be moved with a moving apparatus and configured to control luminance of an image to be displayed on a display unit acquired by an imaging unit. The control apparatus comprising a memory storing instructions, and a processor configured to execute the instructions to obtain information about a position of a moving body in the image, and determine the luminance of the image based on the position of the moving body.

Abstract: The electric apparatus includes first and second electrically driven elements operating in response to receipt of electric signals whose polarities reverse periodically at mutually same periods, and a signal outputter outputting the electric signals respectively to the first and second electrically driven elements. The first and second electrically driven elements are arranged such that each of their element surfaces faces toward the element surface of the other electrically driven element or such that their element surfaces face toward a same plane from mutually opposite sides across the plane. The signal outputter outputs the electric signals such that, in each period of the electric signals, a time period in which their polarities are mutually opposite is longer than a time period in which their polarities are mutually identical.

Abstract: The electric apparatus includes first and second electrically driven elements operating in response to receipt of electric signals whose polarities reverse periodically at mutually same periods, and a signal outputter outputting the electric signals respectively to the first and second electrically driven elements. The first and second electrically driven elements are arranged such that each of their element surfaces faces toward the element surface of the other electrically driven element or such that their element surfaces face toward a same plane from mutually opposite sides across the plane. The signal outputter outputs the electric signals such that, in each period of the electric signals, a time period in which their polarities are mutually opposite is longer than a time period in which their polarities are mutually identical.

Abstract: A fan power supply apparatus is disclosed, which is capable of cooling a lamp to an adequate temperature in a case where AC power is shut off. The fan power supply apparatus comprises a DC generator which generates DC power from AC power, a backup power supply which is charged with the DC power from the DC generator,a supplying device which supplies the DC power from the backup power supply to the cooling fan. The controller controls the supplying device to start supplying the DC power to the cooling fan when the input of the AC power is stopped and controls the supplying device to stop supplying the DC power in response to the elapse of a predetermined time period detected with a timer after the start of the DC power supply.

Abstract: A camera section for photographing an object to generate a video signal is connected via a cable to a video signal processing section that receives and processes the video signal. When the camera section is replaced with a different one, signals corresponding to the new camera section are automatically provided. A video signal, a synchronizing signal therefor, a clock signal, and control data are multiplexed on a signal line in the cable and the signal obtained is transmitted from the camera section to the video signal processing section, and control data is sent from the video signal processing section to the camera section. These control data are transmitted during a vertical interval of the video signal, and a DC voltage is supplied to the camera section from the video signal processing section via a shield line that is paired with the signal line in the cable.