Abstract: In a sound/moving picture reproduction system 1, a main data transferring device 2 includes a sound/moving picture data storing portion storing sound/moving picture data. A plurality of auxiliary data transferring devices 4 are connected in parallel to the main data transferring device 2. The auxiliary data transferring devices 4 are arranged in one or more stages along a data transfer direction defined from the main data transferring device toward a plurality of data reproducing devices 8. Each of the plurality of auxiliary data transferring devices 4 includes a copied data storing portion storing copied data of received sound/moving picture data. The main data transferring device reads sound/moving picture data from the is sound/moving picture data storing portion and transfers the read sound/moving picture data to either one of the plurality of auxiliary data transferring devices.

Abstract: Each of the data transmission devices 15a-15d serially and cyclically transmits all the song data over a corresponding channel, by a time cycle corresponding to the number of the song data. The four data transmission devices 15a-15d transmit the song data, at timings shifted from one another by (1/the number of channels) of the time cycle. Each terminal determines one channel out of the four channels that can most rapidly supply desired song data. Each terminal then picks up the desired song data from the determined channel.

Abstract: A microcomputer selects one of a plurality of drive units, and controls the selected drive unit to reproduce image data from a video disk located thereon. When a reproduction error occurs in the thus reproducing drive unit, the microcomputer selects another drive unit, and controls the drive unit to reproduce images. Accordingly, it is possible to always provide accurate images.

Abstract: The clock demodulator 25 continually demodulates the clock signal of the control CPU 7 transmitted from the clock modulator 10 of the center S. The terminal control CPU 23 performs processes such as transmission and reception of data with the demodulated clock signal as a reference clock. The time required to synchronize the clocks of the CPUs 7 and 23 is eliminated. Transmission and reception of data is executed quickly as soon as right of transmission is transferred to a terminal.