Patent ID: 7245572

Claim:
A device for protecting a plurality of PID synchronous signals in an optical storage system comprising: a synchronous pattern detecting device used for detecting at least one synchronous signal wherein the at least one synchronous signal comprises data synchronous signals and PID synchronous signals; a data synchronous signal insertion device that is connected to the synchronous pattern detecting device used for adding the amount of data synchronous signals to a first predetermined number; a counting/reloading device that is connected to the data synchronous signal insertion device used for sequentially counting the first predetermined number of data synchronous signals and an additional second predetermined number of data synchronous signals; a PID window generator that is connected to the counting/reloading device used for generating a plurality of protecting windows respectively corresponding to the plurality of physical identification data synchronous signals while the counting/reloading device is counting the second predetermined number of data synchronous signals; and a PID synchronous signal protection device that is connected to the PID window generator used for protecting the plurality of physical identification data synchronous signals according to the plurality of protecting windows.