Optical disc with copy protection file system format and method of making such disc
AssigneeVinpower Inc.
InventorsShuo Wei Chang, Liao-Hsuan Kuo, Chun-Sung Wu
Life of this patent
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Abstract
The present invention provides an improved file system format for an optical disc to help prevent illegal copying of multimedia content, where certain non-readable data record is placed into increased measured length of a multimedia data block; disc made pursuant to present format allows normal playback with very low level noise that would not affect the user enjoyment of viewing/listening the movie or music content on the multimedia disc.
Claims7
An optical disc of certain file system format to store multimedia data, the format comprising:
- A lead-in block;
- A metadata block having a plurality of data attribute records;
- A multimedia data block having at least a multimedia data record and at least a non-readable data record;
- and
- A lead-out block,
- wherein the four blocks are set in the sequential order described herein and the at least a non-readable data record is set at random position within the multimedia data block to increase the measured length of the multimedia data records.
A method for burning a multimedia optical disc to have a file system format for preventing illegal copying, comprising the steps of:
- a. Read a source multimedia data record;
- b. Burn the source multimedia data record to a location inside the multimedia data block;
- and
- c. Place at least a non-readable record into random location with the multimedia data block of the disc where the measured length of the source multimedia data records is increased.
Dependencies are inferred from the claim text.