Patent ID: 6535346
Filing Date: 2003-03-18
Classification: G11B

Abstract:
A disc driving device comprising: first head means moved by a linear motor in a direction along the radius of a first disc for recording information signals thereon at a first recording density or reproducing information signals recorded thereon at the first recording density; first interfacing means for receiving from outside signals to be recorded by said first head means and for sending to outside signals reproduced by said first head means; second head means moved by a linear motor in a direction along the radius of a second disc for recording information signals thereon at a recording density higher than said first recording density or reproducing information signals recorded thereon at said recording density higher than said first recording density; second interfacing means for receiving from outside signals to be recorded by said second head means and for sending to outside signals reproduced by said second head means; shock detection means for detecting the shock from outside; and control means for controlling the recording and/or reproducing processing for said first and second discs on shock detection by said shock detection means;wherein, when said first disc is loaded in a position, and said shock detection means detects the shock, said control means interrupts the recording and/or reproducing processing for said first disc.