An apparatus for simultaneously playing moving channel images of multiple channels, the apparatus comprising: a frequency changeover tuner which is configured to successively select multiple channels as changing frequencies; a demodulation unit which is configured to demodulate data of the selected channels; a storage unit which is configured to store the demodulated data; a playback unit which is configured to play the stored data by channels; an image-management unit which is configured to manage an arrangement of displayed channel images, wherein the apparatus comprises: a fixed channel tuner which is configured to receive a specified frequency real-time playback channel and to play in real time the specified frequency realtime playback channel; wherein the playback unit is configured to simultaneously play moving channel images of the multiple channels, and the frequency changeover tuner is changeable to the fixed channel tuner and the fixed channel tuner is changeable to the frequency changeover tuner, and wherein: if the real-time playback channel selected by the fixed channel tuner is changed to one of the multiple channels selected by the frequency changeover tuner while the frequency changeover tuner is selecting another channel that is not the changed channel for a real-time playback, the fixed channel tuner selects the changed channel for a real-time playback, and the frequency changeover tuner successively selects the remaining channels except for said changed channel, and wherein if a real-time playback channel selected by the fixed channel tuner is changed to the channel selected by the frequency changeover tuner for a real-time playback, the fixed channel tuner becomes the frequency changeover tuner that successively selects the remaining channels except for the changed channel for a real-time playback, and the frequency changeover tuner that selects said changed channel becomes the fixed tuner. a frequency changeover tuner which is configured to successively select multiple channels as changing frequencies; a demodulation unit which is configured to demodulate data of the selected channels; a storage unit which is configured to store the demodulated data; a playback unit which is configured to play the stored data by channels; an image-management unit which is configured to manage an arrangement of displayed channel images, wherein the apparatus comprises: a fixed channel tuner which is configured to receive a specified frequency real-time playback channel and to play in real time the specified frequency realtime playback channel; wherein the playback unit is configured to simultaneously play moving channel images of the multiple channels, and the frequency changeover tuner is changeable to the fixed channel tuner and the fixed channel tuner is changeable to the frequency changeover tuner, a fixed channel tuner which is configured to receive a specified frequency real-time playback channel and to play in real time the specified frequency realtime playback channel; wherein the playback unit is configured to simultaneously play moving channel images of the multiple channels, and the frequency changeover tuner is changeable to the fixed channel tuner and the fixed channel tuner is changeable to the frequency changeover tuner, if the real-time playback channel selected by the fixed channel tuner is changed to one of the multiple channels selected by the frequency changeover tuner while the frequency changeover tuner is selecting another channel that is not the changed channel for a real-time playback, the fixed channel tuner selects the changed channel for a real-time playback, and the frequency changeover tuner successively selects the remaining channels except for said changed channel, and wherein if a real-time playback channel selected by the fixed channel tuner is changed to the channel selected by the frequency changeover tuner for a real-time playback, the fixed channel tuner becomes the frequency changeover tuner that successively selects the remaining channels except for the changed channel for a real-time playback, and the frequency changeover tuner that selects said changed channel becomes the fixed tuner.