Abstract: In an IC card, the value of a monitoring flag is set to an initial value which serves as a predetermined value when all processes corresponding to commands for outputting data are normally performed, in a memory of an IC chip. The value of the monitoring flag is set depending on the execution states of the various processes corresponding to the commands for outputting the data. When the processes prior to data output are completed, data to be output is masked on the basis of the value of the monitoring flag, and the masked data is output using a communication interface.

Abstract: A reproducing apparatus has a plurality of input units which input a picture signal, a reproducing unit which selects one input unit from the plurality of input units and reproduces a picture signal from the selected input unit, a storage unit which stores the selected input unit by the reproducing unit in association with predetermined information, and a control unit which, when the user setting of the storage unit is specified, changes an input in order to select such one input unit stored in the storage unit again.