Reproduction-only recording medium, reproducing apparatus, reproducing method, and disk manufacturing method
AssigneeSony Corporation
InventorShoei Kobayashi
Life of this patent
Estimating the term…
Abstract
A ROM disk having a block data format provided with linking areas as with a rewritable disk. Main data recorded in a main data area and linking data recorded in a linking area in each block are scrambled by identical scrambling data. The scrambling data is generated by a random sequence using address information of the block as an initial value.
Claims9
A reproduction-only recording medium wherein blocks having a main data area and a linking area are continuous with each other to form a data track by embossed pits;
- and
- main data recorded in said main data area and linking data recorded in said linking area in each of said blocks are scrambled by scrambling data generated by an identical system.
A reproducing apparatus for performing data reproduction in correspondence with at least a reproduction-only recording medium in which medium blocks having a main data area and a linking area are continuous with each other to form a data track by embossed pits, and main data recorded in said main data area and linking data recorded in said linking area in each of said blocks are scrambled by scrambling data generated by an identical system, said reproducing apparatus comprising:
- reading means for reading information from a recording medium loaded into the reproducing apparatus;
- and
- decoding means for subjecting the information read by said reading means to data decoding processing and descrambling processing for said scramble, and reproducing said main data and said linking data.
A reproducing method for reproducing data from a reproduction-only recording medium, in which medium blocks having a main data area and a linking area are continuous with each other to form a data track by embossed pits, and main data recorded in said main data area and linking data recorded in said linking area in each of said blocks are scrambled by scrambling data generated by a random sequence using address information of said block as an initial value, said reproducing method comprising the steps of:
- reading information from a loaded recording medium;
- and subjecting the read information to data decoding processing and descrambling processing using scrambling data generated by a random sequence using the address information of said block as an initial value, and reproducing said main data and said linking data.
A disk manufacturing method for manufacturing a reproduction-only disk recording medium, in which medium blocks having a main data area and a linking area are continuous with each other as a data track formed by embossed pits, said disk manufacturing method comprising the steps of:
- scrambling main data recorded in said main data area and linking data recorded in said linking area by using scrambling data generated by a random sequence using address information of said block as an initial value;
- and
- performing disk mastering using the scrambled data.
Dependencies are inferred from the claim text.