Lg Electronics Inc.

Yong Hee Han

Yong Cheol Park

Han Sang Lee

Jong In Shin

Myung Ho Lee

Sang On Park

Sung Woo Park

Myung Gu Lee

A method for protecting disc copy of the present invention includes the steps of detecting an identifier of a disc to be reproduced and determining if a disc copy is permitted or not using copy protection disc information and the identifier. A recording and reproducing apparatus having a disc copy-protection function of the present invention includes a reproducing drive for reading data from a disc, a recording drive for writing data on other disc, storage unit for storing a copy-protection disc information for judging whether a disc copy is permitted or not, and control unit for controlling a disc copy from the disc in the reproducing drive to the other disc in the recording drive.

Recording and reproducing apparatus having copy-protection function and method thereof

A method of reproducing an audio file includes: identifying a type of audio data in the audio file based on an extension information of the audio file separated from but associated with the audio data of the audio file; and determining whether the audio file is reproducible by checking whether a part of the audio file constructs a specific format stream corresponding to the identified audio type.

Apparatus and method for reproducing audio file

A method of reproducing an audio file includes: determining whether the audio file is reproducible by checking whether a part of the audio file constructs a specific format stream corresponding to a predetermined audio type; and controlling for selectively reproducing only audio files reproducible based on a result of the determining step.

A method of reproducing an audio file includes: applying a reproducing mode established based on an attribute information; obtaining at least a part of the audio file under the established reproducing mode; and determining whether the audio file is reproducible under the established reproducing mode by checking whether the part of the audio file constructs a specific format stream corresponding to the applied reproducing mode.

A recording medium and a spare area management method for an optical recording medium are provided. The recording medium includes a spare area including a first spare area and/or an extendable second spare area and a control information area including first and second state information to indicate respectively whether or not the first spare area and the second spare area are in full state, wherein the second state information is set indicate further whether or not the second spare area is assigned.

Spare area management method of optical recording medium

A method of recording data onto an optical disk uses a write strategy that corresponds to the recording features of the optical disk. The method detects a track pitch or storage capacity of a recording medium, adjusts a write strategy according to the detected track pitch or storage capacity wherein the write strategy has been chosen to correspond to the manufacturer of the recording medium, and records input data onto the recording medium using the adjusted write strategy. Accordingly, data quality during later reproduction is improved even though it is recorded onto a non-standard disk that is larger in capacity than the standard.

Method of recording signals onto a recording medium

A method of reproducing an audio file includes: reading an extension information of the audio file, the extension information of the audio file being separated but associated with audio data of the audio file; establishing a reproducing mode for reproducing the audio file based on the extension information; obtaining at least a part of the audio file under the established reproducing mode; and determining whether the audio file is reproducible under the established reproducing mode by checking whether the part of the audio file constructs a specific format stream corresponding to the established reproducing mode.

Method for reproducing audio file

An apparatus and a method of determining an optimal writing power for an aged writable disk after checking whether a writable disk is aged or not, are discussed. The apparatus and method according to an embodiment read signals written on a writable disk, judge whether or not the writable disk is aged based on a signal characteristic, e.g., a level difference between the read signals before and after an equalization and jitter of the read signals, and conduct an OPC for the writable disk to obtain a precise optimal writing power if the disk is judged to be aged. The precise optimal writing power can prevent deterioration of reproduction characteristic of recorded data even though an aged writable disk is used.

Method and apparatus of detecting an optimal writing power for an aged writable disk

An optical disc player discriminates an attribution of tracks recorded onto a disc inserted in the player, and normally reproduces MP3 tracks recorded onto discs inserted into a plurality of disc drivers using an MP3 decoder. Also, according to a method of reproducing an optical disc, the optical disc player discriminates a kind of an inserted disc as an audio file disc, an MP3 file disc, or a general data file disc and normally performs a reproducing operation for the files or music recorded onto the inserted disc.

Optical disc player and method for reproducing thereof

An apparatus includes a controller storing information on dense/sparse state of the tracking error signal in connection with characteristic of the signal generated by a phase encoder while tracking servo of a servo unit is inactivated, and, in data reproduction mode, identifying a current disk phase based on characteristic of the signal generated by the phase encoder, and adjusting tracking characteristic of the servo unit based on the stored information in connection with the signal characteristic in order to compensate an effect rate of eccentricity on the identified disk phase. Through minute adjustment of servo characteristic for each disk phase, error range of TE signal to track in real time is reduced. Therefore, tracking for an eccentric disk becomes easier and more reliable.

Apparatus of controlling tracking for a disk

An optical disc player discriminates an attribute of tracks recorded onto a disc inserted in the player, and normally reproduces MP3 tracks recorded onto discs inserted into a plurality of disc drivers using an MP3 decoder. Also, according to a method of reproducing an optical disc, the optical disc player discriminates a kind of an inserted disc as an audio file disc, an MP3 file disc, or a general data file disc and normally performs a reproducing operation for the files or music recorded onto the inserted disc.

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.

A spare area management method of an optical recording medium is disclosed. 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. Also, the present spare area management method improves the performance of the driver by replacing a defect block with a spare block nearer to the defect block.

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Sungnam-si, South Korea

Yong Hee Han