Data transfer and reproduction system

摘要

A data transfer and reproduction system which transfers contents data such as music and the like from a master device (10) such as a personal computer and the like to a slave device (20) such as a car-mounted audio device and the like, without putting an operational burden on a user. Certification is registered between the slave device and the master device which transfers contents data, and contents data is transferred between the devices the certification of which has been registered. Of contents data stored in memory in the master device, contents data with a "yet-to-be transferred" identifier is transferred to the slave device at predetermined timing. When the functional disturbance of the slave device is detected during transfer, the transfer of contents data is aborted. The timing of the transfer may be in accordance with a predetermined time schedule, or a transfer command from the user. Otherwise, the transfer may be carried out, when it is detected that the slave device is put in the vicinity of the master device.