Buffer memory self-diagnosis method for information signal processing apparatus

摘要

In an information processing device such as an optical disc device which is used as an external memory unit of a computer, the increasing of the initial access time can be effectively avoided nevertheless the capacity of the buffer memory is bulked up. Only the partial region of the buffer memory is self-diagnosed and then recording and reproducing of the data is started so as to self-diagnose the residual region in the back ground.