Abstract: Provided is an information notification device (10) utilizing presence information which includes a processing unit (11) to generate, according to trigger information, at least one presence information (MESSAGE 10, MESSAGE 20, MESSAGE 30) between a first moving body (a four-wheeled vehicle (200)), and a second moving body (a two-wheeled vehicle (300) or a riding electric cart (300)), and a transmitting unit (16) which transmits the presence information to both of the four-wheeled vehicle (200) and the two-wheeled vehicle or the electric cart (300). The presence information is, for example, first presence information (MESSAGE 20) and second presence information (MESSAGE 30). The second presence information (MESSAGE 30) can cause a second processing unit (31) of the electric cart (300) to identify another presence information (34-5) representing the presence of the four-wheeled vehicle (200) around the electric cart (300) based on the second presence information (MESSAGE 30).

Abstract: Provided is an information notification device (10) utilizing presence information which includes a processing unit (11) to generate, according to trigger information, at least one presence information (MESSAGE 10, MESSAGE 20, MESSAGE 30) between a first moving body (a four-wheeled vehicle (200)), and a second moving body (a two-wheeled vehicle (300) or a riding electric cart (300)), and a transmitting unit (16) which transmits the presence information to both of the four-wheeled vehicle (200) and the two-wheeled vehicle or the electric cart (300). The presence information is, for example, first presence information (MESSAGE 20) and second presence information (MESSAGE 30). The second presence information (MESSAGE 30) can cause a second processing unit (31) of the electric cart (300) to identify another presence information (34-5) representing the presence of the four-wheeled vehicle (200) around the electric cart (300) based on the second presence information (MESSAGE 30).

Abstract: Disclosed herein is a gain control circuit including: an amplifying section configured to amplify an input voltage in such a manner that amplitude of an output voltage at an output terminal is kept constant; an allowable voltage acquirer configured to acquire an allowable voltage of an apparatus connected to the output terminal; a voltage divider configured to divide the output voltage according to a ratio between a maximum voltage of the amplified input voltage and the allowable voltage; and an adjusting section configured to further amplify the amplified input voltage according to the ratio and supply a resulting voltage to the output terminal.

Abstract: An operation apparatus includes image capturing device capable of capturing images of a plurality of mark members provided in assembled members in a compartment; determining device capable of determining individually whether each of the mark members is or is not shielded on the basis of the image data taken and outputted by the image capturing device; and operation instructing device configured to output an operation command to on-board devices in accordance with a result of the determining by the determining device. Accordingly, it is easy for an operator to understand operational steps, thereby effectively preventing an erroneous operation due to the operator's misunderstanding. Furthermore, it is possible to simplify a determination logic of the operation instructing device, and also possible to easily provide a retrofitted option.

Abstract: Disclosed herein is a gain control circuit including: an amplifying section configured to amplify an input voltage in such a manner that amplitude of an output voltage at an output terminal is kept constant; an allowable voltage acquirer configured to acquire an allowable voltage of an apparatus connected to the output terminal; a voltage divider configured to divide the output voltage according to a ratio between a maximum voltage of the amplified input voltage and the allowable voltage; and an adjusting section configured to further amplify the amplified input voltage according to the ratio and supply a resulting voltage to the output terminal.

Abstract: An operation apparatus includes image capturing device capable of capturing images of a plurality of mark members provided in assembled members in a compartment; determining device capable of determining individually whether each of the mark members is or is not shielded on the basis of the image data taken and outputted by the image capturing device; and operation instructing device configured to output an operation command to on-board devices in accordance with a result of the determining by the determining device. Accordingly, it is easy for an operator to understand operational steps, thereby effectively preventing an erroneous operation due to the operator's misunderstanding. Furthermore, it is possible to simplify a determination logic of the operation instructing device, and also possible to easily provide a retrofitted option.

Abstract: The controller changes the low vehicle speed region set volume according to an operational input to the volume control switch within a first volume setting range set up in advance when the volume control switch is operated in the low vehicle speed region, and changes the high vehicle speed region set volume according to an operational input to the volume control switch within a second volume setting range set up in advance when the volume control switch is operated in the high vehicle speed region. A lower limit of the second volume setting range is set higher than an upper limit of the first volume setting range. Thus, it is possible to accurately control the volume of the audio system and improve feeling of volume change.

Abstract: A set volume control device for an on-vehicle audio system includes: a volume control switch to which a vehicle occupant can arbitrarily give an operational input; and a controller for controlling a set volume changer based on a vehicle speed detected by a vehicle speed detector and the operational input to the volume control switch so that a set volume of an audio system becomes a low vehicle speed region set volume fixed independently of vehicle speed change in a low vehicle speed region; becomes a high vehicle speed region set volume fixed independently of the vehicle speed change in a high vehicle speed region; and changes according to the vehicle speed change along a predetermined medium vehicle speed region set volume change line connecting the low vehicle speed region set volume and the high vehicle speed region set volume in a medium vehicle speed region between the low vehicle speed region and the high vehicle speed region.