| 摘要 |
<p>A reproducing apparatus for a disc-shaped recording medium (1) having digital audio signals recorded in a compressed form includes an optical head (2), a spindle motor (3), a servo control unit (20), a decoder (24), a memory (24) and a controller (21). The optical head (2) radiates a light beam on the disc-shaped recording medium (1) for reading out data recorded on the disc-shaped recording medium (1). The spindle motor (3) rotationally drives the disc-shaped recording medium (1) at a constant linear velocity. The servo control unit (20) servo-controls the optical head (2) and the spindle motor (3) based upon error signals generated on the basis of output signal of the optical head (2). The decoder decodes (24) output signals of the optical head (2). The memory (25) transiently stores output data of the decoder (24) and the data stored in the memory (25) is read out at a readout rate slower than the write rate of the data outputted from the decoder (24). The controller (21) controls the optical head (2) and the memory (25) so that, by alternately setting a first period during which data recorded on the disc-shaped recording medium (1) is read out by the optical head (2) and written in the memory (25) a second period during which readout of data recorded on the disc-shaped recording medium (1) by the optical head is discontinued and only readout of the data stored in the memory (25) is made, the data recorded on the disc-shaped recording medium (1) is read out intermittently. The controller (20) discontinues the operation of the servo control unit during the second period. <IMAGE></p> |
