Recording medium, recording method, and recording/reproducing device
AssigneeSony Corporation
InventorOsamu Nakamura
Life of this patent
Estimating the term…
Abstract
As a tape recording format, tracks are formed by a succession of block units, and a data unit called a group is formed by data of size equivalent to a predetermined plurality of tracks. Using this format, a base group number indicating the group to which the current track physically belongs is recorded in the ID information for a track, and the lower four bits or similar of a group number indicating the group to which the current block logically belongs is recorded within a block. By this means, even if rewriting is performed in block units and a recorded state results in which the blocks of a plurality of groups are intermixed within a track, the group to which each block belongs can be correctly identified during reproduction.
Claims12
A recording medium, in which data are recorded on magnetic tape, characterized in that:
- data are recorded so as to form tracks comprising a plurality of blocks, and groups, which are recording and reproduction data units corresponding to a predetermined plurality of tracks, are stipulated;
- wherein
- physical group identification information indicating the group to which the current track physically belongs is recorded within the data of said tracks;
- and,
- logical group identification information indicating the group to which the current block logically belongs is recorded, using a number of bits smaller than the number of bits of said physical group identification information, in said blocks.
A recording method in which data are recorded on magnetic tape characterized in that:
- data are recorded so as to form tracks comprising a plurality of blocks, and groups, which are recording and reproduction data units corresponding to a predetermined plurality of tracks, are stipulated;
- wherein
- during recording,
- physical group identification information indicating the group to which the current track physically belongs is recorded so as to be stored within the data of said tracks;
- and
- logical group identification information indicating the group to which the current block logically belongs is recorded so as to be stored, using a number of bits smaller than the number of bits of said physical group identification information, in said blocks.
A recording and reproduction apparatus, which records data on magnetic tape, characterized in that:
- data are recorded so as to form tracks comprising a plurality of blocks, and groups, which are recording and reproduction data units corresponding to a predetermined plurality of tracks, are stipulated;
- comprising
- recording means which performs recording so as to store physical group identification information, indicating the group to which the current track physically belongs, in the data of said track;
- and
- which performs recording so as to store, within said blocks, logical group identification information to indicate, using a number of bits smaller than the number of bits of said physical group identification information, the group to which the current block logically belongs.
Dependencies are inferred from the claim text.