Data reproducing apparatus and program for performing a data reproducing process

Abstract

CPU 16 and a memory controller 15 increment a writing address from a starting address every time when data is written into a shock memory 14 , and increment a reproducing address from a starting address, thereby writing data read out by a pickup 12 to the writing address in the shock memory 14 . Further, CPU 16 and the memory controller 15 suspend operation for reading out data from the shock memory 14 until the writing address reaches an accumulation judging address, and start the operation for reading out data from the reproducing address of the shock memory 14 when the writing address has reached the accumulation judging address. Even if a pickup for reading data from a recording medium such as CD is in a transient state from a stop state or from a fast forward state to a reproducing state, generation of a disconnected sound is prevented.

Description

technical field [0001] The present invention relates to a data reproduction device and a data reproduction processing method for reproducing data recorded on a recording medium such as an optical disk. Background technique [0002] On a recording medium such as a CD (Compact Disc Read Only), data composed of music data is stored in pit trains formed on concentric circular tracks. In a data reproducing device that reproduces data recorded on a CD, the mounted CD is rotated by a spindle motor, a beam of laser light or the like is irradiated along the track of the disc, and a sensor is provided that detects changes in reflected light based on the presence or absence of pits. Tracking control and focus control realize data reproduction. In this way, since the sensor performs data reproduction without physical contact with the storage surface of the optical disc, there is an advantage of not damaging the storage surface. In addition, if the data read out by the sensor has error...

AI Technical Summary

Problems solved by technology

On the contrary, the disadvantage is that when the force is applied to the sensor by external vibration and shock or other reasons, "sound jumping phenomenon" occurs, and even if the error correction is performed by digital signal processing, it cannot be solved.

[0014] In the above-mentioned previous structure, even if the cause of the sound jitter can be judged, there is no description of the countermeasures for suppressing the sound jitter

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