| Entries |
| Document | Title | Date |
|---|
| 20080205224 | METHOD AND APPARATUS FOR MANAGING DEFECTS IN RECORDING MEDIA, A COMPUTER READABLE MEDIUM INCLUDING COMPUTER READABLE CODE FOR THE SAME, AND A DEFECT MANAGED RECORDING MEDIUM OBTAINED USING THE SAME METHOD, APPARATUS, AND COMPUTER READABLE MEDIUM - A method, apparatus and computer readable medium for managing recording medium defects and a defect managed recording medium. The recording medium includes a spare area in which a replacement area, which is a substitute for a defective area of the recording medium, is formed, and a temporary defect management area in which temporary management information that specifies the defective area and the corresponding replacement area is recorded, wherein position information and state information regarding the defective area are recorded in the replacement area. Accordingly, it is possible to restore defect information even if recording medium defect management on the recording medium ended abnormally. | 08-28-2008 |
| 20080219118 | RECORDING/REPRODUCING METHOD SUITABLE FOR RECORDING/REPRODUCING AV DATA ON/FROM DISC, RECORDER AND REPRODUCER FOR THE METHOD, INFORMATION RECORDING DISC AND INFORMATION PROCESSING SYSTEM - The present invention relates to a method for recording an AV file using an information recording disk in which data is recorded/reproduced by sectors. The recording method includes the steps of determining whether or not input data is AV data; detecting a defective sector existing in an assigned data recording area; when the input data is AV data while a defective sector is detected in the data recording area, allocating a defective extent including the defective sector; recording AV data in continuous sectors while skipping the defective extent; and allocating an area of continuous sectors where on the AV data is recorded as one AV extent. | 09-11-2008 |
| 20080239901 | Disk drive device and data rewrite method thereof - Embodiments of the present invention help to reduce the occurrence of read hard errors in a hard disk drive (HDD). According to one embodiment, a HDD rewrites data on all data tracks of a block M when the number of write operations to the block consisting of continuous plural data tracks. The HDD further rewrites data on continuous plural data tracks and adjacent to the block. Since the number of write operations is counted every block, a memory area to register the number of write operations can be reduced. | 10-02-2008 |
| 20080273433 | Media Processor - A media processor, such as an optical disk publisher, is capable of efficiently discarding media such as a defective CD without using a manual discarding process. At the time of media publication of an optical disk publisher | 11-06-2008 |
| 20090073837 | OPTICAL PICKUP - An optical pickup to improve countermeasure capability of a disc by allowing polarized light of a spot on the disc to become elliptically polarized light includes a light source to emit semiconductor laser light, an objective lens to condense the light emitted from the light source and form an optical spot on a disc, and a wave plate which is rotated such that the spot formed on the disc becomes elliptically polarized light. | 03-19-2009 |
| 20090135693 | Data recovery through eliminating adjacent track interference - A hard disk drive with a disk that contains a target track and an adjacent track. The drive includes a circuit that determines an error in data read from the target track. Data from the adjacent track is stored in memory. The adjacent track is then erased and the target track data is re-read from the target track. Erasing the adjacent track allows the target track data to be read without adjacent track interference. The data from the adjacent track is typically rewritten onto the disk from memory so no data is lost. | 05-28-2009 |
| 20090135694 | DEVICE AND METHOD FOR DETECTING DISC DEFECT - A method for detecting a typical defect area on a disc track includes the following steps. Firstly, a source signal is provided. Then, first and second signals are generated according to the source signal. The first and second signals are held at the peak level of the source signal and respectively decreased at first and second drop rates. Then, first and second threshold values are subtracted from the first and second signals to generate first and second slice signals, respectively. Afterwards, the source signal is compared with either the first slice signal or the second slice signal. When the first slice signal is larger than the source signal, a typical defect signal is changed from a first level to a second level. Whereas, the typical defect signal is changed from the second level to the first level when the second slice signal is smaller than the source signal. | 05-28-2009 |
| 20090135695 | Method of detecting an abnormal disc - A method of detecting an abnormal disc is provided. Firstly, an objective lens is moved along a one-way path for enabling the light beam of the objective lens to pass through the data layer of a disc. Next, the path having RF signal is detected and recorded. Then, whether the terminal of the one-way path is reached is determined: if the terminal is not reached, the method continues to move the objective lens; if the terminal is reached, the method calculates the length of vibration path on which RF signal is detected. After that, whether the length of vibration path is larger than a path threshold is determined: if the length of vibration path is not larger than a path threshold, the disc is a normal disc; if the length of vibration path is larger than the path threshold, the disc is an abnormal disc. | 05-28-2009 |
| 20090303850 | OPTICAL DISC MEDIUM AND OPTICAL DISC DEVICE - When using an optical disc medium that includes pit trains having their widths narrower than a diffraction limit, it is difficult to detect a tracking error signal and take a tracking-servo control while increasing pit density in a direction orthogonal to a pit-train extension direction. | 12-10-2009 |
| 20100080099 | DEVICE AND METHOD FOR REPRODUCING INFORMATION, AND COMPUTER PROGRAM - An information reproducing apparatus ( | 04-01-2010 |
| 20100226227 | METHODS AND APPARATUSES OF PROCESSING READBACK SIGNAL GENERATED FROM READING OPTICAL STORAGE MEDIUM - A method of processing a readback signal generated from reading an optical storage medium is provided. The method includes: performing a defect detection according to the readback signal to generate a defect detection result indicating defective areas on the optical storage medium; and performing a parameter calibration upon at least a parameter associated with processing of the readback signal according to the defect detection result. | 09-09-2010 |
| 20110280114 | METHOD AND APPARATUS FOR DETERMINING A LOCATION OF A DEFECT ON A STORAGE MEDIUM - A defect is detected on a storage medium of a disk drive. A location of the defect is determined, within a smallest addressable unit of data stored on the storage medium. An indication of the location is stored in a memory. A location of a sensor of the disk drive relative to the data stored on the storage medium is monitored. A response of at least one of a defect detector of the disk drive, a read channel controller of the disk drive, and a servo controller of the disk drive is changed based on the location of the sensor relative to the data stored on the storage medium and the stored indication of the location of the defect. | 11-17-2011 |
| 20120039156 | DEVICE AND METHOD FOR DETECTING DISC DEFECT - A method for detecting a typical defect area on a disc track includes the following steps. Firstly, a source signal is provided. Then, first and second signals are generated according to the source signal. The first and second signals are held at the peak level of the source signal and respectively decreased at first and second drop rates. Then, first and second threshold values are subtracted from the first and second signals to generate first and second slice signals, respectively. Afterwards, the source signal is compared with either the first slice signal or the second slice signal. When the first slice signal is larger than the source signal, a typical defect signal is changed from a first level to a second level. Whereas, the typical defect signal is changed from the second level to the first level when the second slice signal is smaller than the source signal. | 02-16-2012 |
| 20130064060 | METHOD AND APPARATUS FOR DETERMINING A LOCATION OF A FEATURE ON A STORAGE MEDIUM - A change in a property of a signal is detected, the signal having been sensed from a storage medium by a disk drive. A count is determined, the count corresponding to a first location on the storage medium at which the change in the property of the signal sensed from the storage medium is detected. The count is used to predict a second location on the storage medium corresponding to the change in the property of the signal sensed from the storage medium. Relative to the first location on the storage medium, the second location on the storage medium is closer to an actual location of a feature on the storage medium that causes the change in the property of the signal sensed from the storage medium. | 03-14-2013 |
| 20130088946 | METHOD FOR PLAYING BACK RECORDING MEDIUM AND RECORDING MEDIUM PLAYBACK DEVICE USING THE SAME - A method for playing back data stored on a recording medium and a recording medium play back apparatus using the same are provided. A method includes determining a section of data to be updated, among the data stored on the recording medium, transmitting information of the section of data to be updated to an external server, receiving new data to substitute for the section of data to be updated from the external server; and substituting the section of data to be updated with the new data and playing back the substituted new data at a point when playing back the section of data to be updated starts. | 04-11-2013 |
| 20130188464 | RECORD/ACCESS DEVICE AND RECORD/ACCESS METHOD - A recording/reproduction device according to the present invention includes a recording/reproduction section for recording or reproducing data on or from an information recording medium; a verification section for checking whether or not the data recorded on the information recording medium can be reproduced normally; a management information recording section for recording, on the information recording medium by use of the recording/reproduction section, only management information which needs to be changed among a plurality of types of management information for managing the data recorded on the information recording medium; and a management information checking section for checking, by use of the verification section, whether or not latest management information including management information which does not need to be changed and is to be reused can be reproduced normally. | 07-25-2013 |
| 20130201809 | RECORDING/REPRODUCING SYSTEM AND SERVER - If a fault, or deterioration in read-out quality, is detected during recording processing with respect to a first recording face, a duplication is made, with respect to the recorded data on the second recording face of the same recording medium, on a separate recording medium. | 08-08-2013 |
| 20140140181 | SYSTEMS AND METHODS FOR CONTENT PLAYBACK AND RECORDING - A method for content playback and recording may include using a computer to obtain media content from a recorded medium. Concurrently with obtaining the media content, the method may include reencrypting the encrypted media content using a secondary encryption key and storing the reencrypted media content in a storage device. | 05-22-2014 |
