Patent ID: 7558931
Filing Date: 2009-07-07
Classification: G11B

Abstract:
1. A write/read apparatus for writing and reading data on a disk-like rotating recording medium comprising: an external interface section for data input; an external interface section for data output; a memory for temporarily storing data that is input through said external interface section for data input and written on said recording medium and data that is read from said recording medium and sent outside the write/read apparatus through said external interface section for data output; an address generating section configured to generate unique addresses associated with physical block addresses of said recording medium; a flag generating section configured to generate flags for prohibiting overwriting of data to be written on said recording medium; and a processing section configured to add the unique addresses generated in said address generating section to corresponding data that is stored in said memory and that is to be written on said recording medium, wherein data with the addition of the flags generated in said flag generating section and the unique addresses is written on said recording medium; wherein said flag generating section automatically determines significance of write data, generates the flags based on the determination and adds the flags to the write data; and wherein the write/read apparatus sends a list of the unique addresses and flags for data written on said recording medium to a host via said external interface section for data output, reads data having the unique addresses specified by said host via said external interface section for data output from said recording medium, and sends read data to said host via said external interface section for data output.