Data recording device, data reproducing device, and optical disc

A data recording device for carrying out recording of data onto a first optical disc prescribed by a first standard and for carrying out recording of data onto a second optical disc prescribed by a second standard and having a higher recording density than the first optical disc, the device comprising:

• data input means to which data to be recorded is inputted;
• interleave processing means for carrying out interleave processing on the data inputted to the data input means while switching a first delay parameter and a second delay parameter greater than the first delay parameter;
• switching means for controlling switching between the first delay parameter and the second delay parameter;
• data writing means for writing the data interleaved by the interleave processing means onto the optical disc;
• and
• disc discrimination means for discriminating whether the optical disc on which the data is written by the data writing means is the first optical disc or the second optical disc having a higher recording density than the first optical disc;
• wherein when it is determined by the disc discrimination means that the optical disc on which the data is written by the data writing means is the first optical disc, the switching means selects the first delay parameter and the data writing means writes onto the first optical disc the data interleaved with the first delay parameter;
• and
• wherein when it is determined by the disc discrimination means that the optical disc on which the data is written by the data writing means is the second optical disc having a higher recording density than the first optical disc, the switching means selects the second delay parameter and the data writing means writes onto the second optical disc the data interleaved with the second delay parameter.

A data reproducing device for carrying out reproduction of data interleaved with a first delay parameter from a first optical disc prescribed by a first standard and for carrying out reproduction data interleaved with a second delay parameter greater than the first delay parameter from a second optical disc prescribed by a second standard and having a higher recording density than the first optical disc, the device comprising:

• data reading means for read out the data from the first optical disc or the second optical disc having a higher recording density than the first optical disc;
• first deinterleave processing means for performing deinterleave processing on the data interleaved with the first delay parameter, read out from the first optical disc by the data reading means;
• second deinterleave processing means for performing deinterleave processing on the data interleaved with the second delay parameter, read out from the second optical disc by the data reading means;
• switching means for carrying out switching between the first deinterleave processing means and the second deinterleave processing means;
• data output means for outputting the data deinterleaved by the first deinterleave processing means or the second deinterleave processing means;
• and
• disc discrimination means for discriminating whether the optical disc from which the data is read out by the data reading means is the first optical disc or the second optical disc;
• wherein when it is discriminated by the disc discrimination means that the optical disc from which the data is read out by the data reading means is the first optical disc, the switching means selects the first deinterleave processing means and the data output means outputs the data deinterleaved by the first deinterleave processing means;
• and
• wherein when it is discriminated by the disc discrimination means that the optical disc from which the data is read out by the data reading means is the second optical disc, the switching means selects the second deinterleave processing means and the data output means outputs the data deinterleaved by the second deinterleave processing means.

A data reproducing device for carrying out reproduction of data interleaved with a first delay parameter from a first optical disc prescribed by a first standard and for carrying out reproduction data interleaved with a second delay parameter greater than the first delay parameter from a second optical disc prescribed by a second standard and having a higher recording density than the first optical disc, the device comprising:

• data reading means for read out the data from the first optical disc or the second optical disc having a higher recording density than the first optical disc;
• deinterleave processing means for carrying out first deinterleave processing in the case where the data read out from the optical disc by the data reading means is the data interleaved with the first delay parameter, and for carrying out second deinterleave processing in the case where the data read out from the optical disc by the data reading means is the data interleaved with the second delay parameter;
• switching means for controlling switching between the first deinterleave processing and the second deinterleave processing;
• data output means for outputting the data deinterleaved by the deinterleave processing means;
• and
• disc discrimination means for discriminating whether the optical disc from which the data is read out by the data reading means is the first optical disc or the second optical disc;
• wherein when it is discriminated by the disc discrimination means that the optical disc from which the data is read out by the data reading means is the first optical disc, the switching means selects the first deinterleave processing and the data output means outputs the data deinterleaved by the first deinterleave processing;
• and
• wherein when it is discriminated by the disc discrimination means that the optical disc from which the data is read out by the data reading means is the second optical disc, the switching means selects the second deinterleave processing and the data output means outputs the data deinterleaved by the second deinterleave processing.