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| Number | Title | Issue Date |
| 8139457 | Systems and methods for low latency media defect detection Various embodiments of the present invention provide systems and methods for media defect detection. For example, a media defect detection systems is disclosed that includes a data input derived from a medium, a fast envelope calculation circuit that receives the da... | 03/20/2012 |
| 8116183 | Method and apparatus for processing defect in data storage medium A method of detecting defects of a recording medium comprises detecting a number of error-corrected error correction code symbols in each of a plurality of sectors in the recording medium, classifying sectors having a number of error-corrected ECC symbols greater th... | 02/14/2012 |
| 8094530 | Optical disc read/write apparatus and alternative write processing method When data is to be written on an optical disc in the unit of a sector, an attempt is made to read a block A to which a write sector belongs for the purpose of judging whether the block can be normally read. If the block A is not successfully read, it is judged to be... | 01/10/2012 |
| 7978578 | Optical disc device and defect detection method for optical disc medium An optical disc device includes an optical head section and a regularity monitoring circuit. The optical head section generates a wobble signal indicating wobbling of a track formed on a recording surface of an optical disc medium based on a reflected light reflecte... | 07/12/2011 |
| 7916594 | Data processing apparatus and method for reproducing data of an optical recording medium A data processing apparatus utilized for reproducing data from an optical storage medium has individual checking modules for separately controlling a data outputting operation of a data buffering unit according to the data buffered in the data buffering unit and a p... | 03/29/2011 |
| 7768887 | Information recording/reproducing apparatus and updating method of management information for optical disk medium When user data fails to be recorded in an address of a user data area, the same data is recorded in an address of a spare area. Information indicating that the data for the address of the user data area is recorded in the address of the spare area is registered in a... | 08/03/2010 |
| 7733751 | Verification method and apparatus A method of verifying whether a recording and/or reproducing apparatus that records and/or reproduces a disc having temporary defect management area (TDMA) information properly produces the TDMA information, the method including producing TDMA information produced b... | 06/08/2010 |
| 7701822 | Recording method, information recording device, information reproducing device, program, recording medium, and computer program product A recording method recordings data on an information recording medium in units of blocks having a predetermine size, by judging whether or not a block of the data being recorded is a defective block, and newly recording the data in a block which follows the defectiv... | 04/20/2010 |
| 7680005 | Detecting apparatus for detecting statuses of optical disc and method thereof Disclosed are detecting apparatus for detecting statuses of an optical disc and methods thereof, which can avoid or reduce erroneous status decisions at the edge of a blank region. The detecting apparatus includes a blank detector, for detecting a blank region of th... | 03/16/2010 |
| 7639580 | Optical disk players and methods for detecting burst cutting area (BCA) data in a constant linear velocity mode Optical disk players include a disk spinning system that is configured to spin an optical disk at a constant linear velocity and a burst cutting area decoding system that is configured to decode data in a burst cutting area of the optical disk, while the optical dis... | 12/29/2009 |
| 7423946 | Disc with temporary disc definition structure (TDDS) and temporary defect list (TDFL), and method of and apparatus for managing defect in the same A disc with a temporary defect management information area and a defect management area includes a defect management area that is present in at least one of a lead-in area, a lead-out area, and an outer area, a temporary defect information area which is formed in th... | 09/09/2008 |
| 7417928 | Optically recorded data discrimination apparatus and associated methodology The requested data is read from a DVD disk by interruption in ST46. Then, the ID information for indicating the leading end of the data, and the result of the identification by use of the EDC for indicating whether or not the data is correct are stored in ST | 08/26/2008 |
| 7406010 | Data recording/reproducing method with robust error handling capability and data recording/reproducing apparatus thereof A data recording/reproducing method with robust error handling capability and a data recording/reproducing apparatus therefore, are provided. The data recording method includes: dividing data to be recorded on a recording medium into blocks having a predetermined si... | 07/29/2008 |
| 7400564 | Disc with temporary disc definition structure (TDDS) and temporary defect list (TDFL), and method of and apparatus for managing defect in the same A disc with a temporary defect management information area and a defect management area includes a defect management area that is present in at least one of a lead-in area, a lead-out area, and an outer area, a temporary defect information area which is formed in th... | 07/15/2008 |
| 7379402 | Disc with temporary disc definition structure (TDDS) and temporary defect list (TDFL), and method of and apparatus for managing defect in the same A disc with a temporary defect management information area and a defect management area includes a defect management area that is present in at least one of a lead-in area, a lead-out area, and an outer area, a temporary defect information area which is formed in th... | 05/27/2008 |
| 7366963 | Data recording/reproduction device, data recording/reproduction method, and digital camera The present invention is directed to a data recording method of notifying degree of deterioration of recording medium thus to perform stable recording operation. Even in the case where uncorrectable address read error does not exist, deterioration information is dis... | 04/29/2008 |
| 7366068 | Method for recording data to a write once disc A write once disc allowing management of a data area, a method of managing the data area of the write once disc, an apparatus recording data on the write once disc, an apparatus and method of reproducing data from a write once disc. The write once disc, includes a l... | 04/29/2008 |
| 7362675 | Apparatus for recording data to and/or reproducing data from a write once disc A write once disc allowing management of a data area, includes a lead-in zone, a data area, and a lead-out zone. The write once disc includes a predetermined area storing area allocation information which indicates whether at least one section of the data area is al... | 04/22/2008 |
| 7362679 | Information storage medium and method of recording and/or reproducing with respect to the medium An information storage medium includes an area in which updated disc-related information and recording-related information updated with a change in at least one of a disc version number and a recording speed is recorded along with existing disc-related information a... | 04/22/2008 |
| 7339870 | Optical disk apparatus and data reproducing method When the data is reproduced by irradiating a laser beam onto the optical disk, an amount-of-irradiation-beam detection signal is produced according to the amount of the laser beam irradiated onto the optical disk, and the defect on the optical disk is detected on th... | 03/04/2008 |
| 7337354 | Write once type recording medium, recording device and recording method for write once type recording medium, and reproduction device and reproduction method for write once type recording medium On a write-once-type recording medium 10, there are provided: a definite defect management area 13 to definitely record therein defect management information; and a plurality of temporary defect management areas 14A, 14B, and 14C t... | 02/26/2008 |
| 7330422 | Optical storage medium having test pattern for measuring a modulation degree during recording process A read-only information storage medium includes: a data area which stores user data; a lead-in area; and a lead-out area. A pattern for achieving a purpose is formed in at least one of the lead-in area and the lead-out area. ... | 02/12/2008 |
| 7330409 | Disc with temporary defect management area, and disc defect management method and apparatus therefor A write once disc with at least one record layer includes a temporary defect management area in which temporary defect information regarding only defect detected during a corresponding recording operation, and temporary defect management information for managing the... | 02/12/2008 |
| 7327646 | Optical recording medium and method for formatting the same with improved compatability and consistency 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... | 02/05/2008 |
| 7321620 | Equalizer and reproduction signal processing device The present invention provides an equalizer capable of accurately compensating for non-linearity of an input signal due to the asymmetry phenomenon, etc., during the disk production process. Two tap coefficients are provided in a coefficient unit. A comparator compa... | 01/22/2008 |
| 7315496 | Memory manage method for defect management of an optical disk A method for accessing data of an optical disk with a disk drive. The drive includes a memory; the optical disk has a plurality of data blocks for recording data and a plurality of spare blocks for replacing defect data blocks. While reading data recorded on the opt... | 01/01/2008 |
| 7313066 | Write once disc allowing management of data area, method of managing the data area, and method for reproducing data from write once disc A write once disc allowing management of a data area, a method of managing the data area of the write once disc, an apparatus recording data on the write once disc, an apparatus and method of reproducing data from a write once disc. The write once disc, includes a l... | 12/25/2007 |
| 7312390 | Automatic music playing apparatus and computer program therefor An external storage device stores automatic music playing data files, each file including data of a progression of musical notes constituting a performance of a music piece, and registration data files, each file including data of a set of parameters to determine th... | 12/25/2007 |
| 7302019 | Maximum likelihood decoding method and maximum likelihood decoder A maximum likelihood decoder includes metric generators for generating metrics based on a plurality of partial responses and a Viterbi decoder for realizing maximum likelihood decoding by using a synthetic metric generated by synthesizing the metrics. A first partia... | 11/27/2007 |
| 7296178 | Write-once-type recording medium, recording apparatus and method for write-once-type recording medium, and reproducing apparatus and method for write-once-type recording medium On a write-once-type recording medium 10, there are provided: a definite defect management area 13 to definitely record therein defect management information; and a plurality of temporary defect management areas 14A, 14B, and 14C t... | 11/13/2007 |
| 7286311 | Thermal asperity compensation in perpendicular recording A data detection circuit includes a transient detector that senses transient events in data. A first data detector path applies a first equalization target to generate a first bit stream from the data. A second data detector path applies a second equalization target... | 10/23/2007 |
| 7283442 | Method for choosing the defect detection mode of an optical storage device At least one detection area on an optical storage medium is allocated for data storage first, and then the detection area is set to a defect detection mode of either write detection or write verification, depending on the number of defects stated in a previous defec... | 10/16/2007 |
| 7277371 | Recording medium, recording device, reproduction device, recording method and reproduction method In order to enhance the usability of a write-once recording medium, the recording medium is provided with an ordinary recording/reproduction area, an alternate area, a first alternate-address management information area and a second alternate-address management info... | 10/02/2007 |
| 7271971 | Dynamically adapting a magnetic tape read channel equalizer A read channel equalizer of a magnetic tape drive which equalizes digitally sampled magnetic signals detected by a read head is dynamically adapted. A detector of equalizer dynamic adaptation logic compares equalizer output signals to desired values that are based o... | 09/18/2007 |
| 7263047 | Method for erasing a re-writable disk The present invention discloses a method for erasing a re-writable disk. The method includes determining whether the write fail occurs in a program area of the re-writable disk when fully erasing the re-writable disk and a write fail occurs. If the write fail occurs... | 08/28/2007 |
| 7245445 | Method of managing defects in hard disk drive, recording media therefor and hard disk drive therefor A method of managing defects in a hard disk drive, and more particularly, a method of managing defects in a hard disk drive in a case where a position of defects on a disk is known in advance. A data zone is allocated to predetermined tracks around tracks including ... | 07/17/2007 |
| 7219277 | Method for creating defect management information in an recording medium, and apparatus and medium based on said method This invention provides a method for creating/writing defect management information of an information recording medium and an apparatus and optical disc based on the method. In the present invention, it depends on the type of data to be reproduced whether or not def... | 05/15/2007 |
| 7219296 | Information reproducing apparatus and method with correction of equalized signal levels An information reproducing apparatus has an equalizing filter which performs partial response equalization of a detection signal detected by a detecting section and which outputs an equalized signal, a variable gain amplifier which corrects the potential of the equa... | 05/15/2007 |
| 7212481 | Searching method and device for a recording medium having overlapped time address A method and device for searching a recording medium are provided. The recording medium has a management information area of which location information is overlapped with that of a program area. The method for determining an area on a recording medium having an over... | 05/01/2007 |
| 7212474 | Detecting anomalies in a scanning signal An apparatus for scanning a track on a record carrier has a head (22) and front end circuitry (31) for scanning the track and generating scanning signals. A detection unit (32) detects anomalies in the scanning signal, for example for adjusting ... | 05/01/2007 |
