Patent ID: 6173390
Filing Date: 2001-01-09
Classification: G06F,G11B

Abstract:
A resident control program for decoding encrypted data stored on a storage medium, the resident control program being stored on the storage medium along with the encrypted data, and being executed within the driving device, the resident control program comprising:a first program code means for enabling the driving device to judge, upon receipt of an external instruction, whether the resident control program incorporates an executing control program;a second program code means for enabling the driving device to search the storage medium for the executing control program if said first program code means judges that the resident control program does not include the executing control program;a third program code means for enabling the driving device to read the searched executing control program; anda fourth program code means for enabling the driving device to decode the read executing control program; anda fifth program code means for enabling the driving device to incorporate the decoded executing control program into the resident control program.