Abstract: An estimation device is a device that estimates a charge state of an energy storage device including a negative electrode having a negative active material that contains Si. The estimation device includes a control unit that determines based on a charge-discharge history of the energy storage device whether or not to perform a first estimation method of estimating a charge state of the energy storage device by using a relationship between the charge state and a voltage of the energy storage device.

Abstract: A mobile body system for managing a mobile body that moves within a predetermined area includes a mobile body associated with a guest group including one or more guests, and a managing apparatus configured to manage an outer appearance of the mobile body. The managing apparatus includes an activity collector configured to collect activity information indicative of an activity of the guest within the predetermined area, and an outer appearance manager configured to change the outer appearance of the mobile body viewed by the guest based on the activity information collected by the activity collector.

Abstract: A mobile body system for managing a mobile body that moves within a predetermined area includes a mobile body associated with a guest group including one or more guests, and a managing apparatus configured to manage an outer appearance of the mobile body. The managing apparatus includes an activity collector configured to collect activity information indicative of an activity of the guest within the predetermined area, and an outer appearance manager configured to change the outer appearance of the mobile body viewed by the guest based on the activity information collected by the activity collector.

Abstract: A mobile unit system is lent to a user group consisting of at least one user in a park. The mobile unit system includes a first mobile unit configured to support an activity of the at least one user; and a second mobile unit configured to cooperate with the first mobile unit. The second mobile unit is smaller in size and has lower functionality than the first mobile unit. The first mobile unit has at least one of a baggage transportation function, a user transportation function, and a payment processing function.

Abstract: A movable body for transporting a visitor at a predetermined area includes a first display device configured to display a video on a virtual window being a display range defined on an inner surface of the movable body, and a display controller configured to partially altering a vehicle window view video which should be originally obtained from the virtual window when the virtual window is assumed to be a physical window, to generate an entertainment effect video. In an operation to generate the entertainment effect video, the display controller may partially or entirely convert a figure of a person contained in the vehicle window view video into that of a fictitious character or may convert at least one of persons contained in the vehicle window view video into an invisible form.

Abstract: A power-supply device has a first power supply circuit adapted to generate from an input voltage a first output voltage and a second power supply circuit adapted to generate from the first output voltage a second output voltage. The second power supply circuit monitors the first output voltage to check if it is higher than a first threshold voltage, and also monitors the first power-supply circuit to check if it has started operation for generating the first output voltage, so that the second power supply circuit stays on stand-by, even when the first output voltage is higher than the first threshold voltage, until the first power supply circuit starts operation for generating the first output voltage.

Abstract: A power-supply device has a first power supply circuit adapted to generate from an input voltage a first output voltage and a second power supply circuit adapted to generate from the first output voltage a second output voltage. The second power supply circuit monitors the first output voltage to check if it is higher than a first threshold voltage, and also monitors the first power-supply circuit to check if it has started operation for generating the first output voltage, so that the second power supply circuit stays on stand-by, even when the first output voltage is higher than the first threshold voltage, until the first power supply circuit starts operation for generating the first output voltage.

Abstract: A regulator circuit is provided which suppresses a variation in output voltage upon occurrence of a variation in input voltage or output current without any increase in steady-state power consumption.

Abstract: A monitoring circuit for preventing a malfunction of a microcomputer including a capacitor, charging means for charging the capacitor, discharging means for discharging the capacitor, voltage comparing means for comparing a certain reference voltage with a charging voltage of the capacitor, thereby generating a signal for resetting an operation of a monitoring object when the capacitor is charged to have a certain voltage or more, and source voltage deciding means for monitoring a source voltage of the monitoring object and resetting the operation of the monitoring object when the source voltage of the monitoring object is equal to or lower than a certain voltage.

Abstract: A semiconductor integrated circuit device has a MOS transistor M2 including a parasitic diode Dx2 for preventing a reverse current due to a parasitic diode Dx1 of a MOS transistor M1. The semiconductor integrated circuit device further has a voltage setting circuit 1 for turning the MOS transistor M2 off in a reversely biased state, and an anti-reverse-current element 2 for preventing a reverse current from flowing through the voltage setting circuit 1 in a reversely biased state. In normal operation, a direct-current voltage within the withstand voltage range of the MOS transistor M2 is fed to the gate thereof according to the voltage applied to the conductive terminal 6y of the MOS transistor M2.

Abstract: A semiconductor integrated circuit device has a MOS transistor M2 including a parasitic diode Dx2 for preventing a reverse current due to a parasitic diode Dx1 of a MOS transistor M1. The semiconductor integrated circuit device further has a voltage setting circuit 1 for turning the MOS transistor M2 off in a reversely biased state, and an anti-reverse-current element 2 for preventing a reverse current from flowing through the voltage setting circuit 1 in a reversely biased state. In normal operation, a direct-current voltage within the withstand voltage range of the MOS transistor M2 is fed to the gate thereof according to the voltage applied to the conductive terminal 6y of the MOS transistor M2.

Abstract: A power supply device that feeds electric power to an output terminal that is to be connected to a load has first and second PNP-type transistors having their emitters connected to a supplied power line. The collector of the first transistor is connected to the output terminal, and is connected also through two serially connected resistors to ground. An operational amplifier controls the first and second transistors in such a way that the voltage at the node between the two serially connected resistors is kept equal to a setting voltage. To achieve this, a control current is fed to the bases of the first and second transistors. In accordance with the collector current of the second transistor, a limiter circuit limits the output current of the first transistor. The limiter circuit controls the first transistor through the operational amplifier. Between the collectors of the first and second transistors, a capacitor is connected.

Abstract: In order for simulcast phase synchronization to be carried out autonomously by each base station, a highly accurate clock is provided in the central station and in each base station, and phase compensation is performed in accordance with time information from these clocks. As a result, simulcast synchronization that depends on the accuracy of clocks can be established, and the required synchronization accuracy can be obtained even when high transmission speeds are involved. The clocks can be corrected by a portable reference clock brought to each base station and central station site, and/or by a global positioning system installed at each base station and/or central station site.