Abstract: A sound output device of the present invention is one that receives a digital audio signal including a plurality of channels and performs digital signal processing on the received digital audio signal, and includes a detecting portion which detects peak values or effective values of the plurality of channels included in the digital audio signal. The sound output device also includes an electric power calculating portion which calculates necessary electric power to output sound of each of the channels according to the peak values or the effective values. The sound output device also includes a sound volume adjusting portion which adjusts sound volume of the digital audio signal according to a total of the necessary electric power calculated by the electric power calculating portion for each of the channels.

Abstract: This digital electronic device includes an arithmetic portion calculating an adjustment coefficient employed to adjust a signal level calculated on the basis of a digital value detected by a detecting portion to not more than a possible output level that an output portion can output and an adjusting portion adjusting a digital signal on the basis of the adjustment coefficient calculated by the arithmetic portion such that the signal level becomes not more than the possible output level.

Abstract: A device fault handling system includes a host device provided on a network and a communication-compatible device that enables communication with the host device through the network. The communication-compatible device is configured to send to the host device fault event information indicating an occurrence of a fault in a specific function of the communication-compatible device, and the host device is configured to provide notification of query information to the user, based on the fault event information, as to whether the fault is to be handled by the user or whether the fault is to be handled on a host device side.

Abstract: An advertising system includes a server that is provided on an external network and that stores advertising information, an external network-compatible device capable of acquiring the advertising information from the server via the external network, and an external network-incompatible device that is not capable of acquiring the advertising information from the server via the external network. The external network-compatible device is configured to acquire, from among the advertising information stored in the server, certain advertising information that corresponds to the external network-incompatible device, and send it to the external network-incompatible device.

Abstract: This electronic apparatus includes a plurality of functional blocks, a storage portion storing and accumulating use states of the plurality of functional blocks, and a control portion. The control portion is configured to perform control of disconnecting power supplied to a functional block whose usage rate is not more than a prescribed usage rate, tending to be disused, of the plurality of functional blocks in a state where power is supplied to at least one functional block.