Abstract: 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.

Abstract: 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.

Abstract: A recording medium of writable once type, and a method and apparatus for managing a defective area on the recording medium are provided. The method includes detecting an existence of a defective area within a data area of the recording medium once data are written onto the data area in a data writing operation, writing data written in the defective area onto another area of the data user if the defective area is detected, and writing, onto at least one defect management area on the recording medium, defect management information associated with the defective area.

Abstract: 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.

Abstract: 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.

Abstract: Provided is an apparatus for compensating for a gray component of an input image signal. The apparatus detects a pattern of the input image signal and compensates for the gray component by substituting each channel value of the input image signal by a median value if it is determined that the input image signal is gray pattern. Accordingly, a problem of displaying a color component due to distortion of a gray component of an input image signal can be resolved by resolving a color recognition problem of a gray signal generated by channel differences of the input image signal due to noise induced by a display system, which receives an output of an ADC, or external influences.

Abstract: An apparatus of recording data on a recording medium includes an optical recording device and a microcomputer. The recording medium has a lead-in area, a lead-out area, and a data zone, where the data zone has a user data area and a spare area. When the microcomputer receives a command for physically overwriting first data in a first area within the user data area and determines that the first area is included in a pre-recorded area, it controls the recording device to record the first data in a first replacement area instead and to record a first entry in a TDMA, where the first entry specifies the locations of the first area and the first replacement area.

Abstract: Optical recording medium having an indication of a recording capacity, and method for indicating a recording capacity of an optical recording medium facilitates recording or reproducing of an accurate amount of data by indicating the initial recording capacity determined by default and the varied recording capacity by additional allocation of the spare area and the like on particular area of the optical recording medium, and conducting the data writing or reading with reference to the initial recording capacity or the varied recording capacity depending on a state of variation of the recording capacity.

Abstract: An optical recording medium and method of formatting the optical recording medium is disclosed. In the present invention, the location information of the supplementary spare area, if assigned, is reset when the optical recording medium is formatted. The resetting of the location information results in consistency between a file system and a driver of the optical recording medium with respect to the supplementary spare area.

Abstract: An optical recording medium and a method for assigning a spare area in a rewritable optical recording medium are provided, in which a supplementary spare area is assigned as necessary if an enlargement of the spare area is required. The present method includes (1) determining an allowable size of the supplementary spare area, and (2) assigning the supplementary spare area in variable increments within the allowable size determined in (1).

Abstract: A recording medium and a spare area management method for an optical recording medium are provided. The spare area management method utilizes an identification information to indicate whether a primary spare area is full or a supplementary spare area has been assigned or extended, as necessary. The spare area management method improves the performance of the driver by replacing a defective block with a spare block nearer to the defective block.

Abstract: In an up-scaler and method for up-scaling an input image frame in vertical and horizontal directions and generating an up-scaled output image frame, the up-scaler includes a timing generator that generates an output clock signal and a sampling frequency converter that outputs a plurality of duplicated pixel data in response to the output clock signal. The timing generator generates the output clock signal such that a duration corresponding to a vertical active period of the up-scaled output image frame and a duration corresponding to a vertical active period of the input image frame are equal. The sampling frequency converter receives pixel data that forms the input image frame in response to an input clock signal, duplicates the pixel data in the vertical and horizontal directions as many times as a vertical scaling factor and a horizontal scaling factor, respectively, and outputs the duplicated pixel data in response to the output clock signal.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The data structure on the recording medium includes a temporary defect management area storing a data block. The data block includes sequential recording information and a temporary definition structure. The sequential recording information provides information on continuous recording areas in the data area of the recording medium. The temporary definition structure includes at least one pointer to information in the temporary defect management area.

Abstract: A write once optical recording medium and a method and apparatus for storing and recovering defect management information to and from the write once optical recording medium are provided. The recording medium includes at least one recording layer, and a data area on the recording layer. The data area includes at least one spare area and a user data area. The spare area contains at least one replacement cluster, each of the replacement clusters storing therein address information of a corresponding defective cluster.

Abstract: A writable-once optical recording medium such as a BD-WO, and a method and apparatus for managing the writable-once optical recording medium, are provided. The recording medium includes at least one recording layer having at least one temporary defect management area and at least one final defect management area. The method includes recording temporary defect management information in the temporary defect management area of the recording medium, the temporary defect management information including disc usage management information indicating a recording use status of the recording medium; and transferring, at a transfer stage, the temporary defect management information from the temporary defect management area to the final defect management area of the recording medium.

Abstract: A write-once optical recording medium, a method for allocating a defect management area of the write-once optical recording medium, and a method for allocating a spare area of the write-once optical recording medium are provided. A method of managing defects on a write-once optical recording medium having at least one recording layer includes the steps of allocating at least one temporary defect management area having a fixed size and at least one temporary defect management area having a variable size to said optical recording medium, respectively, recording defect management information on the at least one temporary defect management area having a fixed size and the at least one temporary defect management area having a variable size; and using the at least one temporary defect management area having a fixed size and the at least one temporary defect management area having a variable size is provided herein.