Abstract: A communication system according to the present invention includes a plurality of terminal devices that are able to communicate mutually. Each of the terminal devices includes a voice input conversion device, a voice transmitting device, a voice receiving device, and a voice reproducing device. When there is a plurality of voice signals which has not been completed reproduction, the voice reproducing device reproduces after arranging the voice signals so that respective voices corresponding to the respective voice signals do not overlap.

Abstract: A communication system according to the present invention includes a plurality of terminal devices that are able to communicate mutually. Each of the terminal devices includes a voice input conversion device, a voice transmitting device, a voice receiving device, and a voice reproducing device. When there is a plurality of voice signals which has not been completed reproduction, the voice reproducing device reproduces after arranging the voice signals so that respective voices corresponding to the respective voice signals do not overlap.

Abstract: A receiver of the present invention includes a microphone, an unnecessary signal remover, and an FM detector. The microphone receives a transmission signal generated by frequency modulating a signal in a frequency band that is receivable by the microphone, on the basis of transmission data. The unnecessary signal remover removes unnecessary signal components by processing the received signal from the microphone. The FM detector restores transmission data by performing FM detection of the received signal from which unnecessary signal components were removed by the unnecessary signal remover.

Abstract: A receiver of the present invention includes a microphone, an unnecessary signal remover, and an FM detector. The microphone receives a transmission signal generated by frequency modulating a signal in a frequency band that is receivable by the microphone, on the basis of transmission data. The unnecessary signal remover removes unnecessary signal components by processing the received signal from the microphone. The FM detector restores transmission data by performing FM detection of the received signal from which unnecessary signal components were removed by the unnecessary signal remover.

Abstract: A communication system according to the present invention includes a plurality of terminal devices that are able to communicate mutually. Each of the terminal devices includes a voice input conversion device, a voice transmitting device, a voice receiving device, and a voice reproducing device. When there is a plurality of voice signals which has not been completed reproduction, the voice reproducing device reproduces after arranging the voice signals so that respective voices corresponding to the respective voice signals do not overlap.

Abstract: The present invention is a still image extraction apparatus for extracting a specific frame as a still image from a plurality of frames. The still image extraction apparatus includes: an extraction condition registration device, an extraction determination device, and an extraction device. The extraction condition registration device registers an extraction condition, which is specified by a user of the still image extraction apparatus, for extracting the still image in an extraction condition recording unit. The extraction determination device determines in a frame-by-frame manner whether or not the plurality of frames satisfy the extraction condition registered in the extraction condition recording unit. The extraction device extracts, as a still image, a frame that has been determined to satisfy the extraction condition.

Abstract: A vehicle includes a detection device and a color change device. The detection device detects an internal state and an external state of the vehicle. The color change device at least partially changes a color of a body of the vehicle depending on a result of detection by the detection device.

Abstract: In a charging fee billing system according to the invention, a preferential card having preferential information stored thereon is issued, the preferential information allowing for an investor having borne costs required for power storage facilities for use in a commercial power system to receive a discount for electricity fees involved in the charging of an electric automobile. When charging is performed for an electric automobile that is equipped with a preferential card, a charging unit set up at a charging stand acquires preferential information from the preferential card. The charging unit bills a charging fee to which a preferential rate has been applied based on the preferential information acquired from the preferential card.