Patent application number | Description | Published |
20100226230 | RECORDING DEVICE AND METHOD, AND COMPUTER PROGRAM, AND RECORDING MEDIUM - A recording apparatus includes: a first strategy calculating device (SCD) for calculating a first optimum strategy allowing jitter recorded at a first speed to satisfy a desired condition by adjusting a first standard strategy; a second SCD for calculating a second standard strategy at a second speed by performing clock cycle conversion according to a difference between the first and second speeds on the first standard strategy; a second power calculating device for calculating a second optimum power used at the second speed; a third SCD for calculating a second optimum strategy allowing jitter recorded at the second speed to satisfy a desired condition, by adjusting the second standard strategy; and a fourth SCD for calculating a third optimum strategy at a third speed, based on each of a difference between the first standard and optimum strategies and a difference between the second standard and optimum strategies. | 09-09-2010 |
20100290325 | RECORDING APPARATUS AND METHOD, COMPUTER PROGRAM, AND RECORDING MEDIUM - A recording apparatus ( | 11-18-2010 |
20110007614 | RECORDING DEVICE AND METHOD, COMPUTER PROGRAM, AND RECORDING MEDIUM - A recording apparatus is provided with: a recording device for recording a data pattern onto a recording medium provided with a user data area; a first controlling device for controlling the recording device to record the data pattern for adjusting the recording condition into an area portion which is outer than an end on an outer side of a recording-scheduled area portion and in which the data pattern is scheduled to be recorded; a reading device for reading the data pattern recorded by the control of the first controlling device, thereby obtaining a read signal; a measuring device for measuring jitter of the read signal; an adjusting device for adjusting a recording condition such that the jitter satisfies a desired condition, and a second controlling device for controlling the recording device to start the recording into the recording-scheduled area portion by using the recording condition adjusted by the adjusting device. | 01-13-2011 |
Patent application number | Description | Published |
20090285066 | INFORMATION RECORDING APPARATUS AND METHOD, AND COMPUTER PROGRAM - An information recording apparatus ( | 11-19-2009 |
20100074080 | INFORMATION REPRODUCING APPARATUS AND METHOD, AND COMPUTER PROGRAM - An information reproducing apparatus ( | 03-25-2010 |
20100074081 | INFORMATION REPRODUCING APPARATUS AND METHOD, AND COMPUTER PROGRAM - An information reproducing apparatus ( | 03-25-2010 |
20100074091 | INFORMATION REPRODUCING APPARATUS AND METHOD, AND COMPUTER PROGRAM - An information reproducing apparatus ( | 03-25-2010 |
20100080099 | DEVICE AND METHOD FOR REPRODUCING INFORMATION, AND COMPUTER PROGRAM - An information reproducing apparatus ( | 04-01-2010 |
20100080102 | INFORMATION REPRODUCING APPARATUS AND METHOD, AND COMPUTER PROGRAM - An information reproducing apparatus ( | 04-01-2010 |
20100097904 | INFORMATION REPRODUCING APPARATUS AND METHOD, AND COMPUTER PROGRAM - An information reproducing apparatus ( | 04-22-2010 |
20110141866 | TRACKING SIGNAL GENERATION DEVICE AND METHOD, REPRODUCTION DEVICE AND METHOD, AND COMPUTER PROGRAM - A tracking signal generating apparatus is provided with: a reading device for reading reflected light of a laser beam applied onto a recording medium, thereby obtaining a resulting read signal; an amplitude-limiting device for limiting an amplitude level of the read signal by a predetermined amplitude value, thereby obtaining an amplitude limit signal; a filtering device for performing a high-frequency emphasis filtering process on the amplitude limit signal, thereby obtaining an equalization-corrected signal; and a generating device for performing a phase comparison process on the equalization-corrected signal, thereby generating the tracking signal. | 06-16-2011 |
Patent application number | Description | Published |
20080316893 | Reproducing Device and Method - A reproducing device is provided with a beam irradiating means, which irradiates one track on a recording medium with a main beam and irradiates a position deviated from the irradiation position of the main beam with a sub beam; a main signal detecting means for outputting a main reproduction signal based on the main beam; a sub signal detecting means, which is divided by a dividing line along the tangent line direction of the one track, has a plurality of light receiving parts including a first light receiving part on a side close to the one track, and outputs a plurality of sub reproduction signal corresponding to detection light from the plurality of light receiving parts; a delaying means for relatively delaying the main reproduction signal and the sub reproduction signal; a delay quantity setting means for setting a delay quantity; and a crosstalk canceller for removing crosstalk from the delayed main reproduction signal. The sub signal detecting means outputs a first sub reproduction signal corresponding to the detection light from a first light receiving part, and the delay quantity setting means sets the delay quantity by using the first sub reproduction signal. | 12-25-2008 |
20090252016 | INFORMATION RECORDING APPARATUS AND METHOD, AND COMPUTER PROGRAM - An information recording apparatus forms a record mark corresponding to a recording signal by applying a laser beam to a recording medium, and includes: a light source for emitting the laser beam; a signal generating device for generating a recording pulse signal for driving the light source on the basis of the recording signal; a test-writing device for performing test-writing; and a determining device for determining at least one of a power and a pulse width of the recording pulse signal on the basis of a test-writing result, the test-writing device performs the test-writing by changing the power of the recording pulse signal, the determining device determines the power, by which waveform distortion is greater than or equal to an upper limit or is less than or equal to a lower limit of an amplitude limit value on a limit equalizer in the mark period corresponding to the long mark. | 10-08-2009 |
20090316557 | INFORMATION REPRODUCING APPARATUS AND METHOD, AND COMPUTER PROGRAM - An information reproducing apparatus ( | 12-24-2009 |
20090323494 | INFORMATION REPRODUCING APPARATUS AND METHOD, AND COMPUTER PROGRAM - An information reproducing apparatus ( | 12-31-2009 |
20100020660 | INFORMATION RECORDING APPARATUS AND METHOD, COMPUTER PROGRAM, AND RECORDING MEDIUM - An information recording apparatus ( | 01-28-2010 |
20100020661 | INFORMATION RECORDING APPARATUS AND METHOD, COMPUTER PROGRAM, AND RECORDING MEDIUM - An information recording apparatus ( | 01-28-2010 |