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Information recording disc and system

  • US 5,323,380 A
  • Filed: 07/02/1991
  • Issued: 06/21/1994
  • Est. Priority Date: 07/02/1990
  • Status: Expired due to Fees
First Claim
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1. An information recording disc comprising at least two bands, each of the bands containing at least one track, one of the at least two bands being one of a read-only area band and a write area band along the at least one track of the one band, and another of the at least two bands being a mixed area band having at least one read-only area and at least one write area at different portions along the at least one track of the mixed area band, and at least one disc structure track including at least mixed track division information recorded therein, the mixed track division information enabling assignment of read-only and write areas to a sector number of the at least one track of the mixed area band.

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