Information processing device, information processing method, and information processing program

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
• link information table formation means for forming a link information table containing information indicative of said cluster link relationship to continuous memory areas external to said recording medium by referencing said file management table,
• wherein said link information table formation means forms said link information table in a free time, which is arranged when said information signals are being processed realtime, and
• wherein said detection means detects a free area by referencing said file management table.

An information processing apparatus for reading a file recorded to a recording medium, said recording medium being formed with a file management table containing information indicative of a link relationship of clusters in which information signals constituting said file are recorded, said information processing apparatus comprising:

• link information table formation means for forming link information table containing information indicative of said cluster link relationship to continuous memory areas external to said recording medium by referencing said file management table;
• and
• read control means for controlling reading means for reading said information signals on the basis of information contained said link information tab1e,
• wherein said link information table formation means forms said link information table in a free time, which is arranged when said information signals are being processed realtime.

An information processing method for recording an inputted information signal to a recording medium as one file, comprising the steps of:

• 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;
• controlling, on the basis of a detection result obtained by said detecting step, recording means to record said information signal to said block-basis free area on said recording medium;
• forming a file management table containing information indicative of a link relationship of clusters in which information signals constituting a file are recorded;
• forming a vacancy information table containing cluster vacancy information, which is formed in a memory other than said recording medium,
• wherein said vacancy information table formation step forms said vacancy information table in a free time, which is arranged when said information signal is processed realtime.

An information processing method for recording an inputted information signal to a recording medium as one file, comprising the steps of:

• 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;
• controlling, on the basis of a detection result obtained by said detection step, recording means to record said information signal to said block-basis free area on said recording medium;
• forming a file management table containing information indicative of a link relationship of clusters in which information signals constituting a file are recorded;
• forming a link information table containing information indicative of said cluster link relationship to continuous memory areas external to said recording medium by referencing said file management table;
• and
• controlling reading means for reading said information signals on the basis of information contained in said link information table,
• wherein said link information table formation step forms said link information table in a free time, which is arranged when said information signals are being processed realtime.

An information processing method for reading a file recorded to a recording medium formed with a file management table containing information indicative of a link relationship of clusters in which information signals constituting a file are recorded, said information processing method comprising the steps of:

• forming a link information table containing information indicative of said link relationship of clusters to continuous memory areas other than said recording medium by referencing said file management table;
• and
• controlling reading said information signal on the basis of said link information tab1e,
• wherein said link information table formation step forms said link information table in a free time, which is arranged when said information signals are being processed realtime.

An information processing program stored on a non-transitory recording medium installed on an information processing apparatus, the information processing apparatus recording inputted information data to a non-transitory recording medium on a file basis executes the steps of:

• 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;
• controlling, on the basis of a detection result obtained by said detecting step, recording said information data to said block-basis free area on said recording medium;
• forming a file management table containing information indicative of a link relationship of clusters in which information data constituting a file are recorded;
• and forming a vacancy information table containing cluster vacancy information, which is formed in a memory other than said recording medium, wherein said vacancy information table formation step forms said vacancy information table in a free time, which is arranged when said information data is processed realtime.

An information processing program stored on a non-transitory recording medium installed on an information processing apparatus, the information processing apparatus recording inputted information data to a non-transitory recording medium on a file basis executes the steps of:

• 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;
• controlling the recording on the basis of a detection result obtained by said detection step;
• recording said information data to said block-basis free area on said recording medium;
• forming a file management table containing information indicative of a link relationship of clusters in which information data constituting a file are recorded;
• forming a link information table containing information indicative of said cluster link relationship to continuous memory areas external to said recording medium by referencing said file management table;
• and controlling reading said information data on the basis of said link information table, wherein said link information table formation step forms said link information table in a free time which is arranged when said information data are being processed realtime.