Information recording medium, and recording method and reproducing method thereof
View Patent ↗An information recording medium in which bottoms of a guide groove and a pit array formed on a disc substrate are allocated on a same flat plane and shaped in flat. Further, in a transition area from a pit array to a guide groove or from a guide groove to a pit array, the information recording medium is provided with an intermediate area composed of a pit array of which height changes from a height between a bottom and a side of a groove to another height between the bottom and a side of the pit array.
1. An information recording medium comprising:
(a) a lead-in area, said lead-in area including
(1) a first track area having a first physical feature that is formed with emboss,
(2) a first groove area having a second physical feature different from said first physical feature that is allocated in an inner circumferential side of said first track area,
(3) a first connection area for continuously connecting said first track area to said first groove area,
(4) a second groove area having a third physical feature different from said first physical feature that is allocated in an outer circumferential side of said first track area, and
(5) a second connection area for continuously connecting said first track area to said second groove area; and
(b) a data area including a third groove area having a fourth physical feature different from said first physical feature that is allocated in an outer circumferential side of said lead-in area.
2. The information recording medium in accordance with claim 1 , wherein said first track area is recorded with control data.
3. The information recording medium in accordance with claim 1 , wherein said first track area is different from said first groove area in a physical depth.
4. The information recording medium in accordance with claim 1 , wherein said first track area is different from said second groove area in a physical depth.
5. A reproducing method for reproducing an information recording medium in accordance with claim 1 , the reproducing method comprising the steps of:
making a head track on said data area; and
reading out ECC blocked data recorded on said data area by means of said head.
6. A reproducing method for reproducing an information recording medium in accordance with claim 2 , the reproducing method comprising the steps of:
reading out control data recorded on said first track area; and
reading out ECC blocked data recorded on said data area.
7. A reproducing apparatus for reproducing an information recording medium in accordance with claim 1 , the reproducing apparatus comprising:
a head;
a means for making said head track on said data area; and
a means for reading out ECC blocked data recorded on said data area by means of said head.
8. A reproducing apparatus for reproducing an information recording medium in accordance with claim 2 , the reproducing apparatus comprising:
a means for reading out control data recorded on said first track area; and
a means for reading out ECC blocked data recorded on said data area.
9. A recording method for recording information on an information recording medium in accordance with claim 1 , the recording method comprising the steps of:
making a head track on said data area; and
recording ECC blocked data on said data area by means of said head.
10. A recording apparatus for recording information on an information recording medium in accordance with claim 1 , the recording apparatus comprising:
a head;
a means for making said head track on said data area; and
a means for recording ECC blocked data on said data area by means of said head.
11. The information recording medium in accordance with claim 1 , wherein said first track area is different from said third groove area in a physical depth.