Optical record carrier, drive unit, data updating method and software version-up method
AssigneeHitachi Maxell, Ltd.
InventorTamotsu Iida
Life of this patent
Estimating the term…
Abstract
A disc-shaped optical record carrier includes a first area having a spiral track extending in a first direction from an inner side on the disc, and a second area having a spiral track extending in a second direction opposite to the first direction, from an outer side on the disc located on the same plane as the first area on the disc, wherein one of the first and second areas is assigned a recordable area and the other is assigned a read only area.
Claims18
A disc shaped optical record carrier comprising:
- first area having a spiral track extending in a first direction from an inner side on the disc;
- and
- a second area having a spiral track extending in a second direction opposite to the first direction, from an outer side on the disc located on the same plane as said first area on the disc,
- wherein one of said first and second areas is assigned a recordable area and the other is assigned a read only area.
A disc shaped optical record carrier comprising:
- first and second areas provided respectively in inner and outer portions on the disc, each of said first and second areas being assigned a record area of a different structure and having a track extending in the same direction;
- and
- a buffer area provided between said first and second areas and formed by crossing said first and second areas, information being unable to be recorded in and reproduced from said buffer area.
A disc shaped optical record carrier comprising:
- a first area having a spiral track extending in a first direction from an inner side on the disc;
- and
- a second area having a spiral track extending in a second direction opposite to the first direction, from an outer side on the disc located on the same plane as said first area on the disc, wherein each of said first and second areas being assigned a record area of a different structure.
A drive for driving a disc shaped optical record carrier that comprises a first area having a spiral track extending in a first direction from an inner side on the disc, and a second area having a spiral track extending in a second direction opposite to the first direction, from an outer side on the disc located on the same plane as said first area on the disc, wherein one of said first and second tracks is assigned a recordable area and the other is assigned a read only area.
A drive for driving a disc shaped optical record carrier that comprises first and second areas provided respectively in inner and outer portions on the disc, each of said first and second areas being assigned a record area of a different structure and having a track extending in the same direction, and a buffer area provided between said first and second areas and formed by crossing said first and second areas, information being unable to be recorded in and reproduced from said buffer area.
A drive for driving a disc shaped optical record carrier that comprises a first area having a spiral track extending in a first direction from an inner side on the disc, and a second area having a spiral track extending in a second direction opposite to the first direction, from an outer side on the disc located on the same plane as said first area on the disc, wherein each of said first and second areas being assigned a record area of a different structure.
Dependencies are inferred from the claim text.