An information reproducing apparatus which reproduces information recorded on a medium includes an asymmetry correction circuit configured to correct an asymmetry of a signal read from a medium. The mobile terminal determines a time for receiving the service data in response to the scheduling information and discontinuously receives the service data through a second common channel. A monitoring signal generation section generates monitoring signals based on the monitor data belonging to the arbitrary processing division selected by the data selection section. In addition, the system may generate dynamic tags that allow the participants to identify and locate individuals in the video conference. so as to improve heat efficiency, thus facilitating temperature control in the furnace, reducing wearing of the furnace body and facilitating repair of the furnace.