Patent ID: 7689096

Claim:
An information processing apparatus for recording an inputted information signal to a recording medium as one file, comprising: detection means for detecting a free area based on a block composed of a plurality of continuous clusters, which is a minimum recording unit on said recording medium; recording control means for controlling, on the basis of a detection result obtained by said detection means, recording means for recording said information signal to said block-basis free area on said recording medium; file management means for forming, on said recording medium, a file management table containing information indicative of a link relationship of clusters in which information signals constituting a file are recorded and managing said file management table; and vacancy information table formation means for forming a vacancy information table composed of free cluster information onto a memory other than said recording medium by referencing said file management table, wherein said vacancy information table formation means forms said vacancy information table in a free time, which is arranged when said information signal is processed realtime.