Patent ID: 8761573

Claim:
A recording device comprising: an input portion to which main data and additional data for locating said main data are input; a buffer which accumulates said main and additional data; and a recording control portion which transfers the main data and additional data accumulated in the buffer to a recording medium to record the data in the recording medium by using a certain file system, said main data being recorded in writing units, each of predetermined length formed of a predetermined number of file arrangement units and said additional data being recorded in a number of file arrangement units less than said predetermined number, wherein said recording control portion specifies a partial region to which additional information is recorded, said partial region being in the recording medium or in files recorded on the recording medium, and said additional information having been prepared in the file system and including said additional data and writing history information representing completion of recording of writing units; said recording control portion including a file system control portion to reserve for recording on said recording medium recording regions having a recording capacity sufficient to record an integer multiple of said writing units; said recording control portion transfers data to said recording medium when a writing unit of data is accumulated in the buffer; wherein said additional information, when recorded in said partial region cannot be accessed or deleted in the absence of a particular interface associated with said certain file system.