Write once disc, disc drive therefor, and method of managing disc defect considering compatibility with rewritable disc drive

A method of managing disc defects occurring on a write once disc that is a double record layer disc including a first record layer in which a lead-in area, a data area, and an outer area are formed along a recording path and a first spare area and a second spare area are formed at both ends of the data area, respectively;

• and a second record layer in which an outer area, a data area, and a lead-out area are formed along a recording path and a third spare area and a fourth spare area are formed at the both ends of the data area, the method comprising:
• allocating a first temporary defect management area (TDMA) to at least one of the lead-in area, the lead-out area, and the outer area;
• allocating a second TDMA between the first spare area and a user data area and/or between the fourth spare area and the user data area;
• and
• performing disc defect management using the first and second TDMAs.

A method of managing disc defects occurring on a write once disc, the method comprising:

• updating a second temporary defect management area (TDMA) of a data area of the write once disc whenever data is recorded in the data area in a predetermined recording period;
• updating a first TDMA formed in at least one of a lead-in area, a lead-out area, and an outer area of the write once disc whenever data is recorded in the data area of the write once disc in another predetermined recording period;
• and
• recording temporary management information, which is most recently updated in the first or second TDMA, in a defect management area (DMA) formed in at least one of the lead-in area, the lead-out area, and the outer area.

A disc drive comprising:

• a pickup that records data on and reads data from a write once disc;
• and
• a controller that controls the pickup to allocate a first TDMA to at least one of a lead-in area and a lead-out area of the write once disc, allocate a second TDMA between a first spare area and a user data area or between the user data area and a second spare area, and perform disc defect management on the write once disc using the allocated first and second TDMAs,
• wherein the write once disc is a single record layer disc in which the lead-in area, a data area, and the lead-out area are sequentially formed and the first and second spare areas are respectively formed at both ends of the data area.

A disc drive comprising:

• a pickup that records data on and reads data from a write once disc;
• and
• a controller that controls the pickup to allocate a first TDMA to at least one of a lead-in area, a lead-out area, and an outer area of the write once disc, allocate a second TDMA between a first spare area and a user data area and/or between a fourth spare area and the user data area, and perform disc defect management on the write once disc using the allocated first and second TDMAs,
• wherein the write once disc is a double record layer disc including a first record layer in which the lead-in area, a data area, and the outer area are formed along a recording path, and the first spare area and a second spare area are respectively formed at both ends of the data area;
• and including a second record layer in which a second outer area, a second data area, and a second lead-out area are formed along a recording path, and a third spare area and the fourth spare area are respectively formed at both ends of the second data area.

A write once disc that is a single record layer disc in which a lead-in area, a data area, and a lead-out area are sequentially formed and a first spare area and a second spare area are sequentially formed in the data area, the write once disc comprising:

• a defect management area (DMA) formed in at least one of the lead-in area and the lead-out area;
• a first temporary defect management area (TDMA) formed in at least one of the lead-in area and the lead-out area;
• and
• a second TDMA formed between the first spare area and a user data area or between the user data area and the second spare area.

A write once disc that is a double record layer disc including a first record layer in which a first lead-in area, a first data area, and a first outer area are sequentially formed along a recording path and a first spare area and a second spare area are formed at both ends of the first data area, and including a second record layer in which a second outer area, a second data area, and a second lead-out area are sequentially formed along a recording path and a third spare area and a fourth spare area are respectively formed at both ends of the second data area, the write once disc comprising:

• a DMA formed in at least one of the first and second lead-in area, lead-out area, and outer area;
• a first TDMA formed in at least one of the lead-in area, the lead-out area, and the outer area;
• and
• a second TDMA formed between the first spare area and a user data area and/or between the fourth spare area and the user data area.

A method of managing defects in a recording medium, comprising:

• allocating a first temporary defect management area (TDMA) to a first predetermined area on the recording medium;
• allocating a second TDMA to a second predetermined area on the recording medium;
• allocating a defect management area (DMA) to the first predetermined area;
• and
• performing disc defect management using the first TDMA, the second TDMA and the DMA, wherein the second predetermined area is within a data area of the recording medium and is separate from the first predetermined area.