Disc player and method of preventing lock of its resume play

A disc player for performing resume play comprising:

• a disc reproducing engine for reproducing data on a disc;
• a reproducing parameter setting/extracting unit for extracting a parameter indicating a reproducing position in reproducing;
• a reproducing state monitor for monitoring whether the reproducing is proceeding;
• a reproducing parameter storage unit for storing the reproducing position even when the power is turned off;
• a nonvolatile memory constituting any one of a number-ofloadings counter for indicating how many times the parameter is loaded before the parameter is saved, an effective flag for indicating whether contents of the parameter are effective, and a just-after-loading flag for indicating that it is just after loading the reproducing parameter and before any saving;
• and
• a controller for inquiring of said reproducing state monitor about progress of the reproducing every time the reproducing parameter is stored, saving the parameter extracted by said reproducing parameter setting/extracting unit into said reproducing parameter storage unit when the reproducing is progressing, referring to said nonvolatile memory when the power is turned on, interpreting that contents of said reproducing parameter storage unit are ineffective when a value in said nonvolatile memory indicates “disapproval of resume play”, and commanding said reproducing parameter setting/extracting unit to set the contents of said reproducing parameter storage unit into said disc reproducing engine when the value in said nonvolatile memory indicates “approval of resume play”.