Information recording device and a method of recording information by setting the recording area based on contiguous data area

An information recording/reproducing apparatus configured to record and reproduce information recorded on an information recording medium, the information recording medium configured to store AV data and file management information, the information recording medium having a logical structure in which (i) an AV file is provided to store audio data or video data, (ii) defective area management information is provided as information containing information about a defective area, (iii) file management information is provided to manage at least the AV file and file entry information, the file entry information including at least one allocation descriptor of extent for data allocation, and (iv) a contiguous data area (CDA) is provided, wherein the contiguous data area is set as a unit for setting data allocation, and permits skipping to be performed, the contiguous data area has a size expressed by the following formula:

• CDA>STR×PTR×(Ta+Tskip+Tpc)/(PTR−STR)
• wherein STR is an average transmission rate of a control section, PTR is a physical transmission rate, Ta is an average access time of accessing operations in each of which reading means accesses a recording area on an information storage medium, Tskip is a total time required for passing through a skipping process in the contiguous data area, and Tpc is a total access time required for avoiding a PC file or defective area in the contiguous data area,
• the information recording/reproducing apparatus further comprising:
• means for searching for an unrecorded area on the information storage medium;
• means for setting an area to be recorded in the unrecorded area based on the contiguous data area;
• means for setting extent portions in the area to be recorded, in such a manner as to avoid areas other than the AV file;
• means for recording AV data;
• and
• means for reproducing the recorded AV data.

An information recording apparatus for recording information on an information storage medium which has a logical structure in which (i) an AV file is provided to store audio data or video data, (ii) defective area management information is provided as information containing information about a defective area, (iii) file management information is provided to manage at least the AV file and file entry information, the file entry information including at least one allocation descriptor of extent for data allocation, and (iv) a contiguous data area (CDA) is provided, wherein the contiguous data area is set as a unit for setting data allocation, and permits skipping to be performed, the contiguous data area has a size expressed by the following formula,

• CDA≧STR×PTR×(Ta+Tskip+Tpc)/(PTR−STR)
• where STR is an average transmission rate of a control section, PTR is a physical transmission rate, Ta is an average access time of accessing operations in each of which reading means accesses a recording area on the information storage medium, Tskip a total time required for passing through a skipping process in the contiguous data area, and Tpc is a total access time required for avoiding a PC file or defective areas in the contiguous data area, the information recording apparatus comprising:
• means for searching for an unrecorded area on the information storage medium;
• means for setting an area to be recorded in the unrecorded area based on the contiguous data area;
• means for setting extent portions in the area to be recorded, in such a manner as to avoid areas other than the AV file;
• and
• means for recording AV data.

A method for recording information on an information storage medium, the information storage medium having a logical structure wherein (i) an AV file is provided to store audio data or video data, (ii) defective area management information for identifying defective areas, (iii) file management information for managing at least the AV file and file entry information, and (iv) a contiguous data area is set as a unit for setting data allocation and permitting skipping to be performed, the contiguous data area having a size defined by

• CDA≧STR×PTR×(Ta+Tskip+Tpc)/(PTR−STR)
• wherein STR is an average transmission rate of a control section, PTR is a physical transmission rate, Ta is an average access time of accessing operations in each of which reading means accesses a recording area on an information storage medium, Tskip is a total time required for passing through a skipping process in the contiguous data area, and Tpc is a total access time required for avoiding a PC file or defective areas in the contiguous data area,
• the information recording method comprising the steps of:
• searching for an unrecorded area on the information storage medium;
• setting an area to be recorded in the unrecorded area based on the contiguous data area;
• setting extent portions in the area to be recorded, in such a manner as to avoid areas other than the AV file;
• and
• recording AV data.

An information recording method comprising the steps of:

• searching for an unrecorded area on an information storage medium;
• setting an area to be recorded in the unrecorded area based on a contiguous data area;
• setting extent portions in the area to be recorded, in such a manner as to avoid areas other than an AV file;
• and
• recording AV data;
• wherein the contiguous data area having a size defined by
• CDA≧STR×PTR×(Ta+Tskip+Tpc)/(PTR−STR)
• wherein STR is an average transmission rate of a control section, PTR is a physical transmission rate, Ta is an average access time of accessing operations in each of which reading means accesses a recording area on an information storage medium, Tskip is a total time required for passing through a skipping process in the contiguous data area, and Tpc is time a total access time required for avoiding a PC file or defective areas in the contiguous data area.