Patent ID: 6801489
Filing Date: 2004-10-05
Classification: G11B

Abstract:
An apparatus for reproducing information by expanding compressed information recorded on a disc, comprising:spindle driving means for driving a spindle motor for rotating said disc; reading means for reading the compressed information from said disc rotated by said spindle motor; memory control means for writing the compressed information read by said reading means to a memory, to read out the compressed information written from the memory in the order of writing and for supplying the read information to expansion means for expanding the compressed information read by said memory control means and outputting reproduced information based on the expanded information; and storage amount control means for stopping the writing of the compressed information to said memory by said memory control means when an amount of the compressed information unread from said memory after writing thereto increases to a first predetermined amount and for restarting the writing of the compressed information to said memory by said memory control means when the amount of the compressed information unread from said memory after writing thereto decreases to a second predetermined amount which is smaller than said first predetermined amount and which is an amount corresponding to the compression ratio of the compressed information, wherein said spindle driving means decreases the rotational speed of said spindle motor during a writing-interruption period for a time from stoppage of the writing of the compressed information to said memory by said storage amount control means to the restarting of the writing, to a lower speed level than a rotational speed level during a writing period when the compressed information is written to said memory.