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AssigneeSony Corporation
InventorsYoichiro Sako, Yoshitomo Osawa, Akira Kurihara, Isao Kawashima, Hideo Owa
Estimating the term…
A data transmitting method, a data recording apparatus, a data record medium and a data reproducing apparatus are provided to disallow the encryption to be easily decoded and keep the secrecy of key information higher. The data transmitting apparatus includes an error correction coding process block. In the block, an input converting circuit operates to perform a logic operation with respect to the information data from an interface circuit according to the key data. The converted information data is sent to an encoder for generating parity data. This parity data is mixed in a mixing circuit with information data before conversion. The error correction coding block operates to send the resulting data to a modulating circuit for modulating the data. The modulated data is recorded on a disk record medium.
A method for transmitting digital data, comprising the steps of:
An apparatus for recording digital data on a record medium, comprising:
A record medium having a record signal recorded thereon in accordance with a standard recording scheme which is readable by a reproducing apparatus, said record signal including error corrected parity data and non data-converted input information data obtained by performing a data correcting process on an input information data according to encryption key information to generate at least parity data and a data converted input information data, and a an error correction for all or part of said data connected input information data and parity data, wherein said recorded signal at least in part instructs the operation of said reproducing apparatus.
An apparatus for reproducing data recorded on a record medium, on which data an error correction or detection coding process is performed, comprising:
Dependencies are inferred from the claim text.