Abstract: A multi-layered high-density recording medium and an optical power adjusting method for use with the same. Control information is pre-recorded in a specific area of at least a specific recording layer among the multiple recording layers, wherein the control information and includes each reference power information for respective recording layers. The method includes: (a) reading control information from a specific area of the recording medium, wherein the control information includes each reference power information for respective recording layers and is pre-recorded in the specific area of at least a specific recording layer among the multi recording layers; (b) adjusting a power value to be used for at least one of a recording operation and a reproducing operation at a target recording layer, by referring to the read control information; and (c) performing at least one of the recording and reproducing operations based on the adjusted power value.

Abstract: The present invention relates to a method of enabling to reproduce main AN data recorded on a high-density recording medium such as a Blu-ray Disc ROM at a playback speed suitable to the recorded main A/V data. In the present method, when main video data is recorded on a recording medium, playback speed information suitable to the video data is also written within a disc information table allocated in a control area that is located ahead of a data area including the video data. The present method is efficiently applicable to a high-density recording medium containing higher-quality video data that requires higher transfer rate than a digital TV broadcast stream that requires about 36 Mbps transfer rate.

Abstract: A high-density optical disc, a method for encrypting data and recording the encrypted data thereon, and a method for reproducing the encrypted data recorded thereon. Data recorded on a high-density optical disc such as a Blu-ray disc-read only memory (BD-ROM) is recorded in a discontinuous recording format as on a high-density rewritable optical disc such as a Blu-ray disc rewritable (BD-RE). Data can be encrypted and recorded using synchronous data, address unit number (AUN) information or disc radius information recorded in the high-density optical disc. An optical disc apparatus such as a BD-ROM player can maintain reproduction compatibility with the high-density rewritable optical disc such as the BD-RE. A user holding an optical disc apparatus such as a BD-RE recorder, etc. can be prevented from unlawfully copying data recorded on the high-density optical disc and reproducing the copied data.

Abstract: A recording medium, and a method and apparatus for recording data in the recording medium are disclosed. The recording medium including an inner area, a data area, and an outer area includes a first test area contained in the inner area, and a second test area contained in the outer area, wherein the first and second test areas are formed by a predetermined wobble modulation method equal to that of the data area. Therefore, the recording medium can be applied to a method for manufacturing a Blu-ray disc, and data can be effectively recorded/reproduced in/from the recording medium, such as the Blu-ray disc.

Abstract: A physical structure suitable for a recording medium such as a BD, and a method and apparatus for recording data in the recording medium using the physical structure are disclosed. The recording medium includes an inner area, a data area, and an outer area. The recording medium includes a test area contained in at least one of the inner area and the outer area, and a management area for storing a position information indicating a position available for testing in the test area, wherein the position information includes a start position of first data unit available for testing and a position of second data unit available for testing, wherein one or more second data units comprise first data unit. Therefore, the recording medium can be applied to a method for manufacturing a BD, and a disc test process and data recording/reproducing operations can be effectively performed.

Abstract: A method and apparatus for recording data in a recording medium are disclosed. The method for recording data in a recording medium including a wobble-shaped test area includes the steps of a) determining a pre-used test area, b) searching for a current OPC start position of the test area by counting the number of wobbles at a wobble-count reference position, c) performing an Optimum Power Control (OPC) process to calculate an optimum write power at the OPC start position, and d) recording data in a data area using the calculated the optimum write power. Therefore, the recording medium can be applied to a method for manufacturing a BD, and a disc test process and data recording/reproducing operations can be effectively performed.

Abstract: A recording medium, a method for recording control information in the recording medium, and a method and apparatus for recording/reproducing data in/from the recording medium using the same are disclosed. The recording medium includes a data area, and a management area for recording control information capable of identifying write compatibility and read compatibility with a driver for recording or reading data on or from the recording medium. Herein, the control information may include a class number for identifying the read compatibility, and a version number for identifying the write compatibility, and the write compatibility may be determined using the version number within the class number.

Abstract: The present invention relates to a method for encoding and decoding an error correction block, and more particularly to a method for encoding and decoding an error correction block useful for a high-density optical disc. When an error correction block is encoded, a user data block is generated and parity outer information for a vertical data stream within the user data block is generated. Then, parity inner information is generated using an eraser detection code contained in a horizontal data stream or at least one of a syndrome check parity, a sync byte and an indicator flag is generated within the user data block so that an eraser can be declared in the horizontal data stream at a predetermined internal. On the other hand, when the error correction block is decoded, a determination is made as to whether errors are detected from the eraser detection code, the syndrome check parity, etc., and erasers are declared according to a result of the determination.

Abstract: The present invention provides a method of managing a defective area of an optical disc recordable at high speed, recording/reproducing method thereof, and recording/reproducing apparatus thereof, by which an accurate decision of the defective area is provided. Moreover, as optimal recording speed is applicable to re-recording in a specific section, thereby enabling to secure high reliance of data. In an optical disc provided with a defect management area for defect management within a high-speed recordable disc, the present invention includes verifying whether the defective area is generated in performing a recording at high speed, re-verifying presence or non-presence of defect of a corresponding area by changing a recording speed into low speed if the defective area is generated at the high speed, and recording to manage in the defect management area a location information of an area decided as the defective area at the high speed but as a non-defective area at the low speed.

Abstract: The present invention relates to a method of managing CPI (Copy Protection Information) for preventing unauthorized copy of encrypted content recorded on a high-density recording medium such as a BD-ROM (Blu-ray Disc ROM). In the present method, when main content data is recorded in encrypted manner, CPI that is necessary to decrypt the encrypted main content data is written in a predetermined PIC area and is also copied at least once in an area other than the PIC area.

Abstract: Disclosed is a thin film transistor substrate for LCD, for preventing the increase of failed pixels due to opening of gate line by when opening of gate line occurs, allowing black matrix to perform the function of the gate line on behalf of the opened gate line. The substrate includes: black matrix arranged between adjacent unit pixels on transparent insulating substrate; first oxide film formed on black matrix; active polysilicon layer pattern formed at active region; second oxide film formed on resultant substrate including active polysilicon layer pattern, and including first contact hole exposing predetermined portion of black matrix; gate line formed on selected area of second oxide film and electrically contacting with black matrix through first contact hole; third oxide film formed on resultant substrate; data line formed on third oxide film; planarizing film formed on third oxide film including data line; and pixel electrode formed on planarizing film.

Abstract: The present invention relates to a method of correcting data on a high-density recording medium such as a BD-ROM (Blu-ray ROM Disk) and a BD-RW (Blu-ray ReWritable Disk). In the present method, whether there is any error in a predetermined-sized LDC data block, which is included in a physical cluster, is determined based on if there is an error in sync data and BIS data neighboring the LDC data block, and, if determined to be erroneous, error correcting operation for the LDC block is conducted.

Abstract: The present invention relates to method and apparatus of determining a recording location of a high-density recording medium. The present method determines a targeted recording location on a high-density rewritable or read-only recording medium based on successively-detected frame syncs or their combination that includes at least one frame sync written after the targeted recording location.

Abstract: A recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, capable of preventing unauthorized duplication of data streams, written thereon, onto another medium, such as a BD-RE or BD-R, which includes physical mark information, and to methods and apparatuses for forming, recording, reproducing, and restricting playback of the recording medium to prevent unauthorized duplication.

Abstract: A high-density optical disc such as BD-RE (Blu-ray Disc Rewritable) or BD-ROM, and a recording/reproducing method thereof are disclosed. Diverse additional information such as disc reflectivity information, disc layer information or disc type information is efficiently recorded in a particular information field included in a data unit recorded on the burst cutting area of a high-density optical disc or a particular 1-byte address field included in an address unit recorded on the high-density optical disc so that it can be read when the high-density optical disc is loaded in an optical disc apparatus or when a data recording or reproducing operation for the high-density optical disc is carried out. Accordingly, it is possible to achieve optimal optical power control and automatic gain control or identification of a current position, while enabling a normal data recording or reproducing operation corresponding to the type of the optical disc.

Abstract: A high-density read-only optical disc, and an optical disc apparatus and method using the same. The apparatus and method record data on a lead-in area of a high-density read-only optical disc such as a BD-ROM (Blu-ray disc ROM (Read Only Memory)) in the form of pre-pit strings associated with an HFM (High-Frequency Modulated) groove applied to a BD-RW (Blu-ray Disc Rewritable). Moreover, the apparatus and method continuously apply the same tracking servo operation to an entire area of the same high-density read-only optical disc or rewritable optical disc. Therefore, the apparatus and method can simplify an algorithm for controlling a plurality of tracking servo operations, and avoid an increased size of the optical disc apparatus.

Abstract: The present invention relates to a method of recording addresses onto a high-density read-only recording medium and a high-density read-only recording medium containing addresses recorded thereby. In a high-density read-only recording medium in accordance with the present invention, data is recorded in a plurality of recording blocks wherein each block is composed of a Run-in, a physical cluster in which a part of the data has been written after being ECC-formatted and modulated, and a Run-out, and each block has its address in its Run-in and/or Run-out.

Abstract: A high-density multi-layer optical disc, a method for recording data thereon on a layer-by-layer basis, and a method for managing spare areas thereof. In a high-density multi-layer optical disc, having a plurality of recording layers formed thereon, such as a Blu-ray disc rewritable (BD-RE) dual layer, management information is recorded and managed appropriately to the multiple layers so that data can be recorded in a state where the recording layers are linked to each other or the recording layers are separated from each other. Inner and outer spare areas are separately assigned to each of the recording layers formed on the high-density multi-layer optical disc. The management information is recorded and managed appropriately to the multiple layers so that the data can be recorded in a state where the spare areas of the recording layers or used together irrespective of the recording layers or used separately on the layer-by-layer basis.

Abstract: A high-density multi-layer optical disc and a method for managing layer formatting thereof. A high-density multi-layer optical disc such as a Blu-ray disc rewittable (BD-RE) dual layer includes management information, additionally recorded in a lead-in area, needed for identifying formatting status of a plurality of recording layers. After the management information is referred to, at least one unformatted recording layer is automatically formatted. Optionally, the unformatted recording layer is formatted on the basis of a formatting method selected by a user. The multiple recording layers formed on the high-density multi-layer optical disc can be conveniently and effectively formatted.

Abstract: A recording medium, such as an optical disc, method of recording disc version information thereof, recording and/or reproducing method using the disc version information thereof, and recording and/or reproducing apparatus thereof are provided. The standardized disc information can be uniformly applied to efficiently cope with the recording and/or reproducing of the optical disc. In recording disc version information within a management area of a disc, the disc version information is separated into a first version information and a second version information and also can be recorded in at least two separate areas, respectively.