Method and apparatus for recording and reproducing data on/from write-once disc, and write-once disc therefor

Abstract From the Canadian patent

A write-once disc includes: a plurality of update areas in which a predetermined kind of update information is recorded; at least one main access information area in which main access information is recorded the main access information indicating a final update area in which finally updated information is recorded among the plurality of update areas; and at least one sub access information area in which sub access information is recorded the sub access information indicating a location of the finally updated information recorded in the final update area. Accordingly an access time for reading a predetermined kind of information required to use the write-once disc can be reduced.