Abstract: In one embodiment the method includes reading speed information from a specific area of the recording medium. The speed information includes one or more speed flags to indicate whether a corresponding speed is applicable to the recording medium. A first speed flag for a first recording speed lower than a second recording speed is set to be dependent on a second speed flag for the second recording speed. Data is recorded on a main data area of the optical recording medium based on the read speed information.

Abstract: In one embodiment, the method includes reading control information including version information from a specific area of the recording medium. The version information includes a first version information and a second version information. At least one of the first version information and the second version information is used to determine a backward compatibility with respect to reading or writing of the recording medium. A recording/reproducing of data on/from the recording medium is controlled based on the version information.

Abstract: An apparatus, and related method, for recording data that includes a controller to generate control information required to record a main data. The control information including at least one information unit for a specific writing speed and recording layer. The information unit includes write strategy parameters for first write strategy type to be used for the writing speed and recording layer, the first write strategy type being one of an (n?1) write strategy type and an n/2 write strategy type, where n is a length of mark and each type represents a number of write pulse to form a corresponding mark. A writing/reading unit records the control information at a specific area of a recording medium, wherein the controller controls the writing/reading unit to record the control information and to record the main data on the recording layer using write strategy parameters for the first write strategy type included in the information unit, at the specific writing speed.

Abstract: After pre-coding bit data of address information to be recorded on an optical disc on the basis of at least 4 wobble units, wobble data pre-coded on at least 4 wobble units is modulated by a BPSK (Binary Phase Shift Keying) or ASK (Amplitude Shift Keying) method, and the modulated wobble data is alternately recorded on both sides of a land and/or groove of the optical disc. As a result, wobble signals, recorded on sides of signal tracks of a groove and a land, in consecutively repeated anti-phase, or having consecutively repeated different amplitudes, are avoided. There are no consecutively repeated zero-level sections in a push-pull signal, thereby minimizing performance degradation of a wobble PLL (Phase-Locked Loop) and a noise generated in a reproduction RF signal.

Abstract: Herein disclosed are an apparatus and method for encoding a wobble signal to be recorded on an optical disc, and an apparatus and method for decoding a wobble signal read from the optical disc. The encoding apparatus performs a minimum shift keying modulation operation for a wobble signal to be recorded as physical address information on a writable optical disc, by adjusting a first frequency f1 and second frequency f2 of the wobble signal with coherence. Therefore, a peak point of the wobble signal is formed at a point of time that the frequencies change. The decoding apparatus band pass filters an analog wobble signal read from the optical disc, converts the filtered wobble signal into a digital wobble signal, detects a peak point of the converted digital wobble signal, outputs a peak detection signal with a level transition at the detected peak point, and detects/outputs original wobble data on the basis of the outputted peak detection signal.

Abstract: A method of recording writing speed information and per writing speed write strategy information within disc control information is provided. The standardized disc control information can be uniformly applied to efficiently cope with the record/playback of the optical disc. In configuring disc control information within a management area of an optical disc including at least one recording layer, the method includes steps of providing the at least one disc control information within the management area, the disc control information provided per applicable writing speed to each of the at least one recording layer; and recording applicable recording speed information within the disc control information.

Abstract: In a recordable optical disc including at least one recording layer, write strategy information is recorded within disc control information, so that standardized disc control information can be uniformly applied to data recording and reproduction. At least one disc information is recorded as the disc control information within the management area. The disc control informations are recorded for at least one write strategy for a same writing speed and recording layer.

Abstract: A recording medium, such as a high-density and/or read-only recording medium including a data area including at least two data sections and a linking area to link neighboring data sections, the linking area including scrambled user data produced by scrambling user data with a scrambling key, and to methods and apparatuses for forming, recording, and reproducing the recording medium.

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 must be used together irrespective of the recording layers or used separately on the layer-by-layer basis.

Abstract: A recording medium, such as a high-density and/or read-only recording medium that has the same or similar physical recording format, including a linking area, in order to improve reproduction compatibility with a high-density and/or rewritable recording medium, and to methods and apparatuses for forming, recording, and reproducing the recording medium.

Abstract: Disclosed are a method for recording address information on an optical recording medium, an optical recording medium including address information recorded thereon by the same method, and a method for detecting the address information recorded on the optical recording medium. The address information is recorded on the optical recording medium by such a procedure that physical address information of the optical recording medium is ASK (Amplitude Shift Keying)-modulated so as to convert the physical address information to a wobble signal, and then a wobble-shaped recording track is formed on the optical recording medium using the converted wobble signal, thereby recording the physical address information on the recording medium. Therefore, physical address information can be accurately decoded using a phase locked loop circuit and a wobble signal detecting circuit having a simple configuration, without reducing the data recording capacity of the optical recording medium.

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: The present invention relates to a method of inserting sync patterns of different lengths in modulated data, and a recording medium having sync patterns produced by the method. The sector sync and the frame sync pattern to be inserted in modulated data in accordance with the present invention must satisfy the given (d,k) constraints, have distinctive 0's run the modulated channel data can not have, and be as short as it can. In addition, the frame sync pattern is shorter than the sector sync pattern because the frame sync pattern is more frequently inserted than the sector one. Owing to the present sync patterns, the storage capacity reduction of a recording medium due to necessary insertion of sync patterns can be minimized under a given modulation condition.

Abstract: A method for recording address information on an optical recording medium, an optical recording medium including address information recorded thereon by the same method, and a method for detecting the address information recorded on the optical recording medium. Physical address information of the recordable optical recording medium is encoded for insertion as a synchronous code in a head of each sector in an error correction code block unit including a predetermined number of sectors. After the encoded physical address information is modulated into a wobble signal, a wobble-shaped groove is formed on the optical recording medium, using the wobble signal. This configuration allows sector-by-sector addressing operation without reducing the data recording capacity of the optical recording medium for recording real data.

Abstract: A recording medium is provided, which maximizes the recording capacity and simplifies the configuration of an information recording/reproducing apparatus including a pickup. In the medium, different types of wobbling signals are preformatted in each of the adjacent land and groove signal tracks. A same-phase wobbling signal provided by wobbling each side of the respective land and groove signal tracks in the same phase, and a different-phase wobbling signal provided by wobbling each side of the respective land and groove signal tracks in a different phase are used as the different types of wobbling signals. The physical positions of all the land and groove signal tracks are indicated by the same-phase wobbling signal.

Abstract: A recording medium is provided, which maximizes the recording capacity and simplifies the configuration of an information recording/reproducing apparatus including a pickup. In the medium, different types of wobbling signals are preformatted in each of the adjacent land and groove signal tracks. A same-phase wobbling signal provided by wobbling each side of the respective land and groove signal tracks in the same phase, and a different-phase wobbling signal provided by wobbling each side of the respective land and groove signal tracks in a different phase are used as the different types of wobbling signals. The physical positions of all the land and groove signal tracks are indicated by the same-phase wobbling signal.

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: An apparatus and method for detecting a wobble signal read from an optical disc. The wobble signal detection apparatus comprises an analog/digital (A/D) converter for A/D-converting an analog wobble signal, read from the optical disc and then band pass filtered, a slope detector for detecting a slope of the A/D-converted wobble signal according to a variation thereof, and a wobble signal detector for detecting a peak point of the A/D-converted wobble signal using the detected wobble signal slope, and detecting/outputting a square-wave wobble signal with a high level or low level transition at the detected peak point. The slope detector calculates variations of data values of the A/D-converted wobble signal sampled within a predetermined period on the basis of predetermined different weights, accumulates the calculated values and detects the slope of the A/D-converted wobble signal on the basis of the accumulated value.

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 modulating a series of data words into (d,k) constrained sequence in order to record onto a recording medium. The present method generates, for each data word, a number of alternative sequences by combining mutually different digital words with the data word, calculates for each alternative sequence a digital sum value (DSV) and a penalty based on respective consecutive-zeros sections within the sequence and a joining consecutive “zeros” to a previously-selected sequence, and selects one alternative sequence for recording onto a recordable medium based on the calculated DSV and penalties. Owing to the present invention, DC component of sequences to be recorded onto a recording medium is suppressed and stabilization of a reproduction clock is improved through writing more edge information (i.e., “1”s).