| 摘要 |
The invention relates to an information carrier 10 comprising a main channel and an auxiliary channel carrying position information 21 , according to which some of the least significant bits of the position information 21 are made available as local-position information 22 at a higher rate than the whole position information 21 . The information carrier can be in particular an optical disk of recordable type, wherein the auxiliary channel is the wobble channel and the position information 21 is an address. An embodiment of the invention is described of an optical disc based on Blue-ray Disk standard. When an estimate of the current address is already available and the uncertainty only resides in some of the least significant bits, the entire address can be quickly reconstructed as soon as a repetition of the local-position information 22 is acquired. The invention further relates to an apparatus for accessing such an information carrier 10. |
