Lg Electronics Inc.

Lc Electronics Inc.

Kyu Hwa Jeong

Yong Cheol Park

Jong In Shin

Myong Gu Lee

MyongGu Lee

Han Sang Lee

Sung Dae Kim

Yong-Cheol Park

Dong Chul Kang

Myong-Gu Lee

A system of recording or reading data are discussed. According to an embodiment, the system includes: a host device transmitting a write or read command and data to be written or receiving data based on the read command; and a recording/reproducing device, operatively coupled to the host device via interface, controlling a write or read operation in response to the write or read command the from the host device. The recording/reproducing device includes, a pickup for writing or reading data to or from medium, and a controller for determining whether the data requires a real time recording or producing, controlling a recording or reading operation such that a defective block is replaced with a spare block of the spare area, based upon the determination.

Method and apparatus of recording data in the optical recording medium

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.

A method for recording or reproducing data to/from an optical recording medium, through an interface from the optical recording/reading device to a host device, includes receiving a real time write command from the host device if real time data is generated; determining the presence of a defective block listed on a Defect List of a Defect Management Area in a writing area designated by the write command prior to writing the data; returning position information of a defective block to the host device if a defective block is present; and receiving a new write command from the host device to write the data on the optical recording medium based on the returned position information of the defective block.

Method for real time recording/playback of data to/from an optical recording medium and method for managing files thereof

An optical recording medium and a method for recording information are provided. The optical recording medium having a user area and a spare area, includes a control information stored on a particular area of the optical recording medium, wherein the control information includes an initial recording capacity information stored on a particular area of the optical recording medium, wherein the initial recording capacity information pertains to the user area of the optical recording medium, and the initial recording capacity information is varied based upon at least one of an assignment or expansion of the spare area for defect management, the spare area being assigned to an inner area and/or an outer area of the optical recording medium, or being expanded toward an inner direction from the outer area, and wherein the stored recording capacity information is updated to correspond to the varied recording capacity when the initial recording capacity is varied.

Optical recording medium having recording capacity information and method for indicating recording capacity

A method for real time recording and playback of data to and from an optical recording medium, and a method for managing a file thereof is disclosed. In the present invention, the host controls real time data writing by providing a signal requesting for information on a defective area to the device for recording/playback of data to/from an optical disk before providing a write command. Accordingly, the write command is generated such that data is not written on the defective areas, based upon the returned information on the defective area. Alternatively, the host may first provide a write command to the device for recording/playback of data to/from an optical disk, upon which information on defective areas is returned. Thus, the host generates and provides a new write command such that data is not written on a defective area based upon the returned information on the defective area.

Method for real time recording/playback of data to/from and optical recording medium and method for managing files thereof

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.

A recording medium and apparatus and method for managing defective areas are discussed. According to an embodiment, the method includes: (a) determining whether or not a real time recording is required; and (b) controlling a recording operation based on the determination such that (i) a defective block found during real time recording is not replace with a replacement block of a spare area, while storing a status information identifying that the defective block is not replaced, and (ii) a found defective block is replaced with a replacement block of the spare area if the real time recording is not required as a result of the determination, while storing a status information identifying that the defective block is replaced with the replacement block and storing a location of the replacement block.

An optical recording medium record/playback apparatus manages defective areas in a rewritable optical recording medium. A linear replacement control (LRC) bit is added to a secondary defective list (SDL) entry to discriminate defective block information listed in the SDL entry, according to a linear replacement algorithm, from defective block information listed at the SDL entry, according to a skipping algorithm. This allows the apparatus to transmit correct information to a host. When a defective block requiring a new replacement block is found during recording or playing back data and 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. This indicates that the SDL entry was made when the spare area was full. Thus, data is not written in, or read from, the defective block.

The present invention relates to a recording medium and apparatus and method for managing defective areas in the recording medium. According to an embodiment, the method includes (a) reading a defect management information recorded on a defect management area, the defect management information including second information specifying a location of a replacement area to replace the defective area and status information specifying whether or not the defective area is replaced; (b) identifying the defect management information; and (c) controlling a writing operation according to the result of step (b).

A recording medium and a method for recording are provided. The recording medium according to an embodiment includes a control information used to represent a recording capacity of the recording medium, wherein the control information includes first information associated with a pre-defined recording capacity of the recording medium, and second information associated with a varied recording capacity of the recording medium, the second information being recorded at a position different from the first information.

A method for recording data on an optical recording medium includes the step of receiving data to be written and control data. The control data includes status information to indicate whether or not an other sector within a block in which a sector is included is valid. The data is written in an other sector within the block. The method further includes determining whether to perform an error certification process based on the control data, and writing the data based on the result of determining step.

Method for recording data on optical recording medium

An optical recording medium and a method for recording information to indicate a recording capacity of the recording medium, are provided. The method includes recording information to indicate a varied recording capacity on a particular area of the optical recording medium, if an initial recording capacity of the optical recording medium is varied based upon at least one of an assignment and a variance of a spare area for a defect management, the spare area being assigned to an inner area and/or an outer area of the optical recording medium, or being varied toward an inner direction with respect to an outer position.

Method and apparatus for real time recording/playback of data to/from an optical recording medium

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.

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Kyonggi-do, South Korea

Kyu Hwa Jeong