Patent application number | Description | Published |
20080205237 | RECORDING MEDIUM, RECORDING METHOD, REPRODUCTION METHOD, RECORDING APPARATUS AND REPRODUCTION APPARATUS - A recording medium comprising a recording area, the recording area includes a first area and a second area, the first area includes a frame area, the frame area includes an area in which a second synchronization code sequence and at least a portion of data are to be recorded, and the second area includes an area in which a third synchronization code sequence and a fourth synchronization code sequence are to be recorded. | 08-28-2008 |
20080212438 | RECORDING MEDIUM, RECORDING METHOD, REPRODUCTION METHOD, RECORDING APPARATUS AND REPRODUCTION APPARATUS - A recording medium comprising a recording area, the recording area includes a first area and a second area, the first area includes a frame area, the frame area includes an area in which a second synchronization code sequence and at least a portion of data are to be recorded, and the second area includes an area in which a third synchronization code sequence and a fourth synchronization code sequence are to be recorded. | 09-04-2008 |
20080247299 | RECORDING MEDIUM, RECORDING METHOD, REPRODUCTION METHOD, RECORDING APPARATUS AND REPRODUCTION APPARATUS - A recording medium comprising a recording area, the recording area includes a first area and a second area, the first area includes a frame area, the frame area includes an area in which a second synchronization code sequence and at least a portion of data are to be recorded, and the second area includes an area in which a third synchronization code sequence and a fourth synchronization code sequence are to be recorded. | 10-09-2008 |
20080247302 | RECORDING MEDIUM, RECORDING METHOD, REPRODUCTION METHOD, RECORDING APPARATUS AND REPRODUCTION APPARATUS - A recording medium comprising a recording area, the recording area includes a first area and a second area, the first area includes a frame area, the frame area includes an area in which a second synchronization code sequence and at least a portion of data are to be recorded, and the second area includes an area in which a third synchronization code sequence and a fourth synchronization code sequence are to be recorded. | 10-09-2008 |
20090168623 | METHOD AND APPARATUS OF DETERMINING A RECORDING CONDITION FOR OPTICAL DISC - An optical disc writing condition determining method according to the present invention includes the steps of: performing a first test write operation at a low speed on an inner test track; setting condition A for performing a write operation at the low speed on the inner test track based on a result of the first test write operation; performing a second test write operation at the low speed on an outer test track; setting condition B for performing a write operation at the low speed on the outer test track based on a result of the second test write operation; performing a third test write operation at a high speed on the outer test track; setting condition C for performing a write operation at the high speed on the outer test track based on a result of the third test write operation; and calculating either a difference between the conditions A and B or a ratio of the condition B to the condition A and modifying the condition C based on the difference or the ratio, thereby determining writing condition D for performing a write operation at the high speed on user data tracks. | 07-02-2009 |
20090168640 | OPTICAL DISC AND PHYSICAL ADDRESS FORMAT - An optical disc medium comprises a track groove, along which main information is recorded. The track groove is divided into a plurality of blocks. The plurality of blocks each include a plurality of frames. The plurality of frames each include one shape of wobbles indicating sub information, among a plurality of prescribed shapes of wobbles. The plurality of blocks each have address information. The address information is represented by a string of at least one piece of sub information represented by the shape of wobbles of at least one of the plurality of frames. | 07-02-2009 |
20090207705 | OPTICAL DISC VERIFICATION METHOD AND OPTICAL DISC MEDIUM - An optical disc verification method according to the present invention includes the steps of: writing data on first, second and third radial locations on an optical disc at a writing speed V | 08-20-2009 |
20090238050 | Optical Disc Recording Device, Method for Recording Data Onto Optical Disc, and Optical Disc - With the method of the present invention for recording data on an optical disk, a recording pulse corresponding to a long mark includes a combination of a leading pulse and a subsequent intermediate pulse. The level of the leading pulse indicates a first recording power, and the level of the intermediate pulse indicates a second recording power. When an optical disk includes a plurality of recording layers, the ratio of the second recording power to the first recording power is determined for each recording layer. When the recording speed is variable, the ratio of the second recording power to the first recording power is determined for each recording speed. | 09-24-2009 |
20100103793 | MULTILAYER OPTICAL INFORMATION RECORDING MEDIUM, METHOD FOR RECORDING INFORMATION IN THE MULTILAYER OPTICAL INFORMATION RECORDING MEDIUM, RECORDING/REPRODUCING APPARATUS - The present invention provides a novel physical structure for a multilayer optical information recording medium including a plurality of information recording layers, and a recording method and a recording/reproduction apparatus for such a recording medium using the same. The multilayer optical information recording medium according to the present invention includes a test recording area for performing test recording for data recording and/or reproduction conditions in at least one of an inner zone and an outer zone. The test recording area is categorized as one of at least two categories of test recording areas (OPC-A area and OPC-B area). In the OPC-B area, an upper limit value is set on a recording power for the test recording. | 04-29-2010 |
20100135141 | INFORMATION RECORDING MEDIUM AND METHOD FOR REPRODUCING THE INFORMATION FROM THE SAME - The present invention has an object of providing an optical information recording medium including three or more information layers, which allows information to be reproduced from all the information layers at high quality, and a method for reproducing information from such an information recording medium. The reflectance of a third information layer | 06-03-2010 |
20100172226 | INFORMATION RECORDING MEDIUM, REPRODUCTION APPARATUS AND RECORDING APPARATUS - An information recording medium according to the present invention includes three or more information recording layers. Each of the plurality of information recording layers includes a test recording area usable for adjusting a recording condition. One of the plurality of information recording layers includes a reproduction-only management data area in which management data usable for managing the information recording medium is pre-recorded. Each of the other two or more information recording layers among the plurality of information recording layers includes a test recording area at a radial position partially overlapping the radial position of the management data area. | 07-08-2010 |
20100172230 | OPTICAL DISC DRIVE APPARATUS AND OPTICAL DISC REPRODUCTION METHOD USING THE SAME - An optical disc drive apparatus ( | 07-08-2010 |
20100195458 | INFORMATION RECORDING MEDIUM, RECORDING APPARATUS, REPRODUCING APPARATUS AND REPRODUCING METHOD - An information recording medium, comprising N number (N is an integer fulfilling N≧3) of information layers on which information is recordable, and allowing information to be recorded on each of the information layers and allowing information recorded on each of the information layers to be reproduced by being irradiated with laser light. The N number of information layers include an N′th information layer, an (N−1)th information layer, an (N−2)th information layer, . . . a second information layer and a first information layer sequentially located from a laser light incidence side. A reflectance of the N′th information layer is R | 08-05-2010 |
20100202268 | OPTICAL RECORDING METHOD, OPTICAL RECORDING APPARATUS, APPARATUS FOR MANUFACTURING A MASTER THROUGH EXPOSURE PROCESS, OPTICAL INFORMATION RECORDING MEDIUM AND REPRODUCTION METHOD - An optical recording method for recording information by irradiating an optical disc medium with a modulated write pulse train of laser light variable over a plurality of power levels such that a plurality of marks are formed on the optical disc medium, edge positions of each of the marks and a space between adjacent two of the marks being utilized for recording of the information. The optical recording method includes the steps of: encoding record data to generate encoded data which is a combination of marks and spaces; classifying the encoded data according to a combination of a mark length of the mark, a space length of a first space that immediately precedes the mark, and a space length of a second space that immediately succeeds the mark; generating a write pulse train for forming the mark, in which at least one of a leading end edge position, a trailing end edge position and a pulse width of the write pulse train is changed according to a classification result; and irradiating the optical disc medium with the write pulse train generated to form the plurality of marks on the optical disc medium. | 08-12-2010 |
20100254240 | RECORDING MEDIUM, RECORDING METHOD, REPRODUCTION METHOD, RECORDING APPARATUS AND REPRODUCTION APPARATUS - A recording medium comprising a recording area, the recording area includes a first area and a second area, the first area includes a frame area, the frame area includes an area in which a second synchronization code sequence and at least a portion of data are to be recorded, and the second area includes an area in which a third synchronization code sequence and a fourth synchronization code sequence are to be recorded. | 10-07-2010 |
20100260035 | INFORMATION RECORDING MEDIUM AND MANUFACTURING METHOD THEREOF - An information recording medium ( | 10-14-2010 |
20100302921 | INFORMATION RECORDING MEDIUM, RECORDING APPARATUS, REPRODUCING APPARATUS AND REPRODUCING METHOD - An information recording medium, comprising N number (N is an integer fulfilling N≧3) of information layers on which information is recordable, and allowing information to be recorded on each of the information layers and allowing information recorded on each of the information layers to be reproduced by being irradiated with laser light. The N number of information layers include an N'th information layer, an (N−1)th information layer, an (N−2)th information layer, . . . a second information layer and a first information layer sequentially located from a laser light incidence side. A reflectance of the N'th information layer is R | 12-02-2010 |
20100322057 | OPTICAL RECORDING METHOD, OPTICAL RECORDING DEVICE, MASTER MEDIUM EXPOSURE DEVICE, OPTICAL INFORMATION RECORDING MEDIUM, AND REPRODUCING METHOD - An optical recording method for recording information by irradiating an optical disc medium with a modulated write pulse train of laser light variable over a plurality of power levels such that a plurality of marks are formed on the optical disc medium, edge positions of each of the marks and a space between adjacent two of the marks being utilized for recording of the information. The optical recording method includes the steps of: encoding record data to generate encoded data which is a combination of marks and spaces; classifying the encoded data according to a combination of a mark length of the mark, a space length of a first space that immediately precedes the mark, and a space length of a second space that immediately succeeds the mark; generating a write pulse train for forming the mark, in which at least one of a leading end edge position, a trailing end edge position and a pulse width of the write pulse train is changed according to a classification result; and irradiating the optical disc medium with the write pulse train generated to form the plurality of marks on the optical disc medium. | 12-23-2010 |
20110038237 | OPTICAL DISC AND PHYSICAL ADDRESS FORMAT - An optical disc medium comprises a track groove, along which main information is recorded. The track groove is divided into a plurality of blocks. The plurality of blocks each include a plurality of frames. The plurality of frames each include one shape of wobbles indicating sub information, among a plurality of prescribed shapes of wobbles. The plurality of blocks each have address information. The address information is represented by a string of at least one piece of sub information represented by the shape of wobbles of at least one of the plurality of frames. | 02-17-2011 |
20110044143 | OPTICAL RECORDING METHOD, OPTICAL RECORDING DEVICE, MASTER MEDIUM EXPOSURE DEVICE, OPTICAL INFORMATION RECORDING MEDIUM, AND REPRODUCING METHOD - An optical recording method for recording information by irradiating an optical disc medium with a modulated write pulse train of laser light variable over a plurality of power levels such that a plurality of marks are formed on the optical disc medium, edge positions of each of the marks and a space between adjacent two of the marks being utilized for recording of the information. The optical recording method includes the steps of: encoding record data to generate encoded data which is a combination of marks and spaces; classifying the encoded data according to a combination of a mark length of the mark, a space length of a first space that immediately precedes the mark, and a space length of a second space that immediately succeeds the mark; generating a write pulse train for forming the mark, in which at least one of a leading end edge position, a trailing end edge position and a pulse width of the write pulse train is changed according to a classification result; and irradiating the optical disc medium with the write pulse train generated to form the plurality of marks on the optical disc medium. | 02-24-2011 |
20110096643 | INFORMATION RECORDING MEDIUM, RECORDING DEVICE AND REPRODUCING DEVICE - An information recording medium according to the present invention includes three or more information recording layers. Each of the plurality of information recording layers includes a test recording area usable for adjusting a recording condition. One of the plurality of information recording layers includes a reproduction-only management data area in which management data usable for managing the information recording medium is pre-recorded. One information recording layer includes a recordable management data area in which management data usable for managing the information recording medium is newly writable. Each of the other two or more information recording layers among the plurality of information recording layers includes a test recording area at a radial position overlapping the radial position of a part of the reproduction-only management data area. In the one recording layer including the recordable management data area, the recordable management data area is provided at two positions, i.e., one on the inner side and the other on the outer side to the test recording area. | 04-28-2011 |
20110228658 | INFORMATION RECORDING METHOD, OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE, AND OPTICAL INFORMATION RECORDING MEDIUM USED FOR THE SAME - An optical information recording reproducing apparatus precisely decides at least the time width of a recording pulse sequence so as to obtain a preferable signal quality by controlling a recording power and a pulse time width during a high-speed write. The apparatus includes: modulation instrument for generating a test pattern containing at least a first recording mark length; recording pulse sequence conversion instrument for converting the test pattern into a recording pulse sequence containing test recording pulses having different time widths corresponding to at least the first recording mark length; beam irradiation instrument; reproduced signal processing instrument for holding as a first signal index characteristic, the relation between a first signal index acquired according to the reproduced signal obtained from a predetermined area and the recording power; and recording condition calculation instrument for obtaining a desired time width of a recording pulse of the first recording mark length. | 09-22-2011 |
20120008474 | RECORDING MEDIUM, RECORDING METHOD, REPRODUCTION METHOD, RECORDING APPARATUS AND REPRODUCTION APPARATUS - A recording medium comprising a recording area, the recording area includes a first area and a second area, the first area includes a frame area, the frame area includes an area in which a second synchronization code sequence and at least a portion of data are to be recorded, and the second area includes an area of linking frames in which a third synchronization code sequence and a fourth synchronization code sequence are to be recorded. | 01-12-2012 |
20120026852 | OPTICAL DISK RECORDING DEVICE, METHOD FOR RECORDING DATA ON OPTICAL DISK, AND OPTICAL DISK - According to a method of the present invention for recording data on an optical disk, a recording pulse corresponding to a long mark includes a combination of a leading pulse and a subsequent intermediate pulse. Further, a level of the leading pulse indicates a first recording power, and a level of the intermediate pulse indicates a second recording power. When an optical disk includes a plurality of recording layers, a ratio of the second recording power to the first recording power is determined for each recording layer. When the recording speed is variable, the ratio of the second recording power to the first recording power is determined for each recording speed. | 02-02-2012 |
20120188863 | OPTICAL RECORDING METHOD, OPTICAL RECORDING DEVICE, MASTER MEDIUM EXPOSURE DEVICE, OPTICAL INFORMATION RECORDING MEDIUM, AND REPRODUCING METHOD - An optical recording method includes the steps of: encoding record data to generate encoded data which is a combination of marks and spaces; classifying the encoded data according to a combination of a mark length of the mark, a space length of a first space that immediately precedes the mark, and a space length of a second space that immediately succeeds the mark; generating a write pulse train for forming the mark, in which at least one of a leading end edge position, a trailing end edge position and a pulse width of the write pulse train is changed according to a classification result; and irradiating the optical disc medium with the write pulse train generated to form the plurality of marks on the optical disc medium. | 07-26-2012 |
20120294135 | OPTICAL INFORMATION RECORDING METHOD, OPTICAL INFORMATION RECORDING DEVICE, OPTICAL INFORMATION REPRODUCTION METHOD, OPTICAL INFORMATION REPRODUCTION DEVICE, AND OPTICAL INFORMATION RECORDING MEDIUM - Information is recorded and reproduced with high quality by all of the information layers of an optical information recording medium. A recording wavelength generator ( | 11-22-2012 |