Patent ID: 6453369
Filing Date: 2002-09-17
Classification: G06F,G11B

Abstract:
A data storage device which reads data from and/or writes data to a memory medium, comprising:a storage unit for storing a first identifier, said first identifier identifying said data storage device as a unique device; an identifier acquisition unit for acquiring a second identifier previously recorded by said storage device itself in a first area of said memory medium, said memory medium being set to said data storage device; and a controller for comparing said first identifier with said second identifier, and permitting or inhibiting access to a second area of said memory medium for data reading and/or writing in accordance with a result obtained by the comparison of said first identifier and said second identifier, wherein said data storage device reads out said first identifier from said storage unit and records said first identifier to said first area of said memory medium as said second identifier when a security state of said memory medium is in an initial state.