Method and apparatus for updating data on disk storage medium
AssigneeThomson Licensing
InventorsMarco Winter, Uwe Janssen, Wolfgang Klausberger, Stefan Kubsch, Dietmar Hepper
Life of this patent
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Abstract
The use of disk-assisted, dynamic databases is to be optimized. To this end, provision is made for new data intended to update an old stock of data to have a second index, relating to the new data, generated for them, and for said second index to be stored on the disk storage medium as a supplement to the first index relating to the old stock of data. This allows the number of write access operations to the disk storage medium to be reduced. This is particularly advantageous for optical media, whose useful life can be increased as a result.
Claims18
A method for updating first data, which have an associated first index, on a disk storage medium by
- storing second data, which update the stock of data in the first data, on the disk storage medium,
- creating a second index and
- storing the second index on the disk storage medium, wherein
- the second index is associated exclusively with the second data and is stored on the disk storage medium as a supplement to the first index.
An apparatus for storing data on a disk storage medium, having
- a writing device for writing first data and second data, which update the stock of data in the first data, to the disk storage medium and for writing a first index relating to the first data to the disk storage medium,
- a signal processing device for creating the first index, wherein
- the signal processing device may also be used to create a second index relating exclusively to the second data, and
- the writing device may be used to write the second index to the disk storage medium as a supplement to the first index.
A disk storage medium having
- first data stored thereon,
- second data stored thereon which update the stock of data in the first data, and
- a first index, stored thereon, relating to the first data, comprising
- a second index which relates exclusively to the second data and is stored on the disk storage medium as a supplement to the first index.
Dependencies are inferred from the claim text.