Patent ID: 6018506
Filing Date: 2000-01-25
Classification: G11B

Abstract:
A disc reproducing device for reproducing a disc-shaped recording medium having recorded thereon at least first data to be reproduced at a first reproducing rate and second data to be reproduced at a second reproducing rate faster than said first reproducing rate, said first data and said second data being recorded separately in plural areas, comprising:disc-shaped recording medium rotating driving means for rotationally driving said disc-shaped recording medium;rotating speed controlling means for controlling said disc-shaped recording medium rotating driving means so as to rotate at a rotational speed corresponding to at least said second reproducing rate;inputting means for inputting a readout command for said first data or the second data;accessing means for accessing said disc-shaped recording medium for reading out data recorded thereon;accessing means movement means for moving said accessing means to a desired position in the radial direction of said disc-shaped recording medium;controlling means for causing said accessing means movement means to move said accessing means based on the readout command for said first data or the second data from said inputting means for causing said accessing means to read out desired data on said disc-shaped recording medium;output data discriminating means for discriminating whether output data read out from said accessing means is the first data or the second data and for outputting the result of discrimination;buffer memory means for storing said first data; andbuffer memory controlling means for causing said output data at said second reproducing rate to be stored in said buffer memory means if, based on the results of judgment, said output data is the first data, said buffer memory controlling means causing said first data of said buffer memory means to be read out at said first reproducing rate;said buffer memory controlling means causing said first data of said buffer memory means to be read out at said first reproducing rate, said buffer memory controlling means causing said accessing means to access said second data as desired based on the readout command for said second data from said input means for reading out said second data.