Electrical computers and digital processing systems: support – Computer program modification detection by cryptography
Reexamination Certificate
2008-07-15
2008-07-15
Kincaid, Kristine (Department: 2139)
Electrical computers and digital processing systems: support
Computer program modification detection by cryptography
C713S176000, C713S189000, C380S022000, C380S287000, C726S026000, C714S756000, C714S766000, C714S038110
Reexamination Certificate
active
10211499
ABSTRACT:
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 circuit12according to the key data. The converted information data is sent to an encoder15for generating parity data. This parity data is mixed with information data before conversion in a mixing circuit. The error correction coding block operates to send the resulting data to a modulating circuit17for modulating the data. The modulated data is recorded on a disk record medium.
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Kawashima Isao
Kurihara Akira
Osawa Yoshitomo
Owa Hideo
Sako Yoichiro
Frommer William S.
Frommer & Lawrence & Haug LLP
Kincaid Kristine
Presson Thomas F.
Shaw Yin-Chen
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