Optical disk with logical tracks formed thereon and optical disk drive device

An optical disk drive device for use with an optical disk;

• said optical disk including,
• a recording region;
• a plurality of physical tracks formed in said recording region, and corresponding to one revolution of said optical disk;
• said recording region being organized into a plurality of annular zones centered at a center of said optical disk, an annular recording density of said optical disk being higher in zones further from said center of said optical disk such that a linear recording density of said optical disk is substantially constant throughout said recording region;
• an integer number of sectors formed in each of said physical tracks, each sector including a header field with a track address field;
• one or more of said sectors being formed into one of a plurality of logical tracks by setting a track address in said track address field of each sector to indicate membership in one of said logical tracks, each logical track including a predetermined number of said sectors, said logical tracks being divided into revolution groups such that a number of said revolution groups equals a number of said zones, thus, each revolution group corresponds to one of said zones, and an end point of at least one revolution group is not coinciding with an end point of a corresponding one of said zones;
• said optical disk drive device receiving a linear logical address from a host device, and determining a logical track address as an integral quotient of said linear logical address divided by said predetermined number.

A method for accessing an optical disk;

• said optical disk including,
• a recording region;
• a plurality of physical tracks being formed in said recording region, and corresponding to one revolution of said optical disk;
• said recording region being divided into a plurality of annular zones centered at a center of said optical disk, an annular recording density of said optical disk being higher in zones further from said center of said optical disk such that a linear recording density of said optical disk is substantially constant throughout said recording region;
• an integer number of sectors formed in each of said physical tracks, each sector including a header field with a track address field;
• one or more of said sectors being formed into one of a plurality of logical tracks by setting a track address in said track address field of each sector to indicate membership in one of said logical tracks, each logical track including a predetermined number of said sectors, said logical tracks being divided into revolution groups such that a number of said revolution groups equals a number of said zones, thus, each revolution group corresponds to one of said zones, and an end point of at least one revolution group is not coinciding with an end point of a corresponding one of said zones;
• said method comprising:
• (a) receiving a linear logical address from a host device;
• (b) determining a logical track address as an integral quotient of said linear logical address divided by said predetermined number of sectors.