Small cartridge free optical disc with high level of redundancy and tolerance for missing data
A kind of optical disc and data technology, applied in the field of read-only optical media, can solve the problems of expensive, etc., and achieve the effect of maintaining reliability and high read error rate
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[0025] figure 1 100 illustrates an exemplary embodiment of the method of the present invention for distributing e-book information. In step 102, the e-book information is encoded, and in step 104, the encoded e-book information is stored on a coil of spiral or circular tracks in a read-only optical disc having a diameter of 2 to 4 cm and a thickness of 6 to 1.2 mm, the encoded information has sufficient redundancy and sufficient tolerance for missing information so that the disc can be handled and carried without losing reliability of information access. The disc is then distributed free of charge to the public in step 106 without a cartridge.
[0026] Free distribution of e-book information to the public requires discs with very low production costs. Therefore, a disc with a cartridge (for example, SFFD) cannot be used. Because such a disk is not protected, the disk must provide a large amount of redundancy and tolerance against missing data.
[0027] The tray may be abou...
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