Lg Electronics Inc.

Lexmark International, Inc.

Myong Gu Lee

Yong Cheol Park

Jong In Shin

Kyu Hwa Jeong

Sung Dae Kim

A recording medium and apparatus and method for managing defective areas are discussed. According to an embodiment a controller determining whether or not to replace a defective block with a replacement block when a writing or reading data to or from the optical recording medium, based upon a data type to be written or read, and creating a defect list, the defect list including information to indicate whether or not the defective block is replaced with a replacement block; and a writing reading unit, coupled to the controller, to write or read the data to or from the optical recording medium and storing the defect list to a defect management area of the optical recording medium, according to a control of the controller.

Method and apparatus of recording data in the optical recording medium

A defect area management system for an optical storage medium including a management part producing a defect area management signal for real-time processing and transmitting the signal along with data to be written; and a write part executing a defect area management of the optical storage media, writing the data, applied by the defect area management signal from the management part, into the optical storage medium so that whenever a light pickup meets a defect block at the time of writing data requiring the real-time processing into the optical storage medium, it does not have to be moved to the spare area, thus reducing the time it takes to move the light pickup and removing shortcomings of the real-time processing.

Defect area management system and method for optical storage medium

The present invention relates to a recording medium and apparatus and method for managing a defective area of the recording medium. According to an embodiment, the method includes (a) determining whether there is an available replacement block in a spare area and a found defective block is controlled by a linear replacement algorithm; (b) managing a defective data block based on the determination, such that the defective data block is replaced with the replacement block of the spare area if there is the available replacement block and the found defective data block is controlled by the linear replacement algorithm; and (c) recording a defect list to the recording medium, wherein the defect list includes first position information specifying the location of defective data block, second position information specifying the location of replacement block and identification information specifying that the defective data block is replaced.

The present invention relates to an optical recording medium and optical recording medium record/playback apparatus and method, for managing defective areas in a rewritable optical recording medium. Particularly, the present invention adds a linear replacement control (LRC) bit to a secondary defective list (SDL) entry to discriminate a defective block information that is listed at the SDL entry according to a linear replacement algorithm from a defective block information that is listed at the SDL entry according to a skipping algorithm. This allows the optical recording medium record/playback apparatus to transmit correct information to a host. Furthermore, when a defective block requiring a new replacement block is found while recording or playing back data when the spare area is full, instead of carrying out the linear replacement, the LRC bit is set in the SDL entry along with the location information of the defective block to indicate that the corresponding SDL entry was made when the spare area was full, whereby data is not written in the defective block or data of the defective block is not read when rewriting or reproducing the data afterward. Consequently, the present invention can provide efficient management over the optical recording medium.

Method for formatting, and managing a defective area of, a rewritable optical recording medium when a secondary defect list (SDL) is converted into a primary defect list (PDL) without certification by converting only sector numbers of first sectors of the defective blocks listed on the SDL into the PDL. If the defective sector thus listed of the PDL is encountered during writing/reading thereafter, a block (&equals;16 sectors) containing the defective sector is subjected to slipping replacement.

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Kyonggi-do, South Korea

Myong Gu Lee