| 摘要 |
An information carrier having a surface upon which the information is stored. The surface having a first series of lineal regions and at least a second series of lineal regions with the second series being spaced from the first series of lineal regions. The first and second series of lineal regions are used to provide duplication of the stored information at two locations on the carrier so that even if a defect occurs in one region the information can still be read from another region. When stored on a disc, the different series of lineal regions can be arranged in a banded structure, whereby each series is separated from the next by a prescribed radial spacing. Alternatively the separate series of lineal regions can be arranged in interleaved fashion progressing radially on the disc. In either the banded or interleaved embodiments, the information contained in each series may be comprised of a plurality of progressing concentric circular segments or, alternatively, a plurality of substantially circular segments arranged along a spiral path on the disc. |
