Patent ID: 6269420
Filing Date: 2001-07-31
Classification: G06F,Y02D

Abstract:
An information recording/reproducing apparatus comprising:a host computer for recording management information of a file on a recording medium having a file management area for storing the management information;a cache memory which temporarily stores at least a part of information to be recorded from the host computer, the cache memory temporarily storing at least part of the management information to be recorded before the management information is recorded on said recording medium, the cache memory also temporarily storing at least a part of information to be reproduced from said recording medium before the information to be reproduced is sent to said host computer: anda controller that has an analyzing block for analyzing at least a part of the information stored in said cache memory and which controls record/reproduction of information to/from said recording medium,wherein said controller identifies a format of said recording medium on the basis of an analysis result by said analyzing block, determines a position of said file management area, and caches at least a part of said file management area all the time in said cache memory, wherein if a plurality of said file management areas having the same contents exists on said recording medium, said controller compares the contents of the plurality of said file management areas with each other, and if all the contents coincide, said controller caches only one of said file management areas in said cache memory all the time.