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

An information processing device comprising:

• a data processing unit configured to perform a data reproduction process from a disc,
• wherein the data processing unit
• performs a process of reading first main management information which is management information corresponding to a first surface of the disc from the first surface which is a data recording surface serving as a data reproduction target,
• performs a process of reading first mirror management information having the same content as the first main management information from a second surface of the disc different from the first surface when a reading error of the first main management information occurs,
• performs the data reproduction process from the first surface with reference to any of the first main management information or the first mirror management information,
• performs a process of reading second main management information which is management information corresponding to the second surface from the second surface which is a data recording surface serving as a data reproduction target,
• performs a process of reading second mirror management information having the same content as the second main management information from the first surface when a reading error of the second main management information occurs, and
• performs the data reproduction process from the second surface with reference to any of the second main management information or the second mirror management information,
• wherein the first main management information is recorded before the second mirror management information on the first surface of the disc,
• wherein the second main management information is recorded before the first mirror management information on the second surface of the disc, and
• wherein the data processing unit is implemented via at least one processor.

A disc type information recording medium on which user data and management information are recorded,

• wherein the management information is individual management information corresponding to each surface of a disc,
• wherein first surface management information corresponding to a first surface of the disc is recorded as first main management information on the first surface,
• wherein first mirror management information having the same content as the first main management information is recorded on a second surface of the disc different from the first surface,
• wherein second surface management information corresponding to the second surface is recorded as second main management information on the second surface,
• wherein second mirror management information having the same content as the second main management information is recorded on the first surface,
• wherein the first surface management information is recorded before the second mirror management information on the first surface of the disc, and
• wherein the second surface management information is recorded before the first mirror management information on the second surface of the disc.

An information processing method of performing data recording control on a disc in an information processing device,

• wherein the information processing device includes a data processing unit configured to record management information regarding the disc,
• wherein the data processing unit
• records management information corresponding to a first surface of the disc as first main management information on the first surface which is a data recording surface on which data recording is performed,
• further performs a process of recording first mirror management information having the same content as the first main management information on a second surface of the disc which is different from the first surface,
• records management information corresponding to the second surface as second main management information on the second surface which is a data recording surface on which data recording is performed, and
• further performs a process of recording second mirror management information having the same content as the second main management information on the first surface,
• wherein the first main management information is recorded before the second mirror management information on the first surface of the disc, and
• wherein the second main management information is recorded before the first mirror management information on the second surface of the disc.

An information processing method of performing data reproduction control from a disc in an information processing device,

• wherein the information processing device includes a data processing unit configured to perform a data reproduction process from the disc,
• wherein the data processing unit
• performs a process of reading first main management information which is management information corresponding to a first surface of the disc from the first surface which is a data recording surface serving as a data reproduction target,
• performs a process of reading first mirror management information having the same content as the first main management information from a second surface of the disc different from the first surface when a reading error of the first main management information occurs,
• performs the data reproduction process from the first surface with reference to any of the first main management information or the first mirror management information,
• performs a process of reading second main management information which is management information corresponding to the second surface of the disc from the second surface which is a data recording surface serving as a data reproduction target,
• performs a process of reading second mirror management information having the same content as the second main management information from the first surface when a reading error of the second main management information occurs, and
• performs the data reproduction process from the second surface with reference to any of the second main management information or the second mirror management information,
• wherein the first main management information is recorded before the second mirror management information on the first surface of the disc, and
• wherein the second main management information is recorded before the first mirror management information on the second surface of the disc.

A non-transitory computer-readable storage medium having embodied thereon program, which when executed by an information processing device causes the information processing device to execute a method, the method comprising:

• causing data recording control to be performed on a disc in the information processing device;
• recording management information regarding the disc;
• performing a process of recording management information corresponding to a first surface of the disc as first main management information on the first surface which is a data recording surface on which data recording is performed;
• performing a process of recording first mirror management information having the same content as the first main management information on a second surface of the disc which is different from the first surface;
• performing a process of recording management information corresponding to the second surface as second main management information on the second surface which is a data recording surface on which data recording is performed;
• and
• performing a process of recording second mirror management information having the same content as the second main management information on the first surface,
• wherein the first main management information is recorded before the second mirror management information on the first surface of the disc, and
• wherein the second main management information is recorded before the first mirror management information on the second surface of the disc.

A non-transitory computer-readable storage medium having embodied thereon program, which when executed by an information processing device causes the information processing device to execute a method, the method comprising:

• causing data reproduction control from a disc to be performed in the information processing device;
• performing a data reproduction process from the disc;
• performing a process of reading first main management information which is management information corresponding to a first surface of the disc from the first surface which is a data recording surface serving as a data reproduction target;
• performing a process of reading first mirror management information having the same content as the first main management information from a second surface of the disc different from the first surface when a reading error of the first main management information occurs;
• performing the data reproduction process from the first surface with reference to any of the first main management information or the first mirror management information;
• performing a process of reading second main management information which is management information corresponding to the second surface from the second surface which is a data recording surface serving as a data reproduction target,
• performs a process of reading second mirror management information having the same content as the second main management information from the first surface when a reading error of the second main management information occurs, and
• performs the data reproduction process from the second surface with reference to any of the second main management information or the second mirror management information,
• wherein the first main management information is recorded before the second mirror management information on the first surface of the disc, and
• wherein the second main management information is recorded before the first mirror management information on the second surface of the disc.