| 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 |
|---|
| 20090022027 | INFORMATION RECORDING APPARATUS AND INFORMATION RECORDING METHOD - In the information recording apparatus, by driving the light source by the pulse signal corresponding to the recording signal, the laser pulse corresponding to the recording signal is irradiated onto the recording medium. The recording signal has the mark period to form the recording mark, and the space period in which the recording mark is not formed. In the mark period, the output level of the laser pulse changes between the normal level and the writing level, thereby, the recording mark is formed on the recording medium. On the one hand, over a predetermined period in the space period, the output level of the laser pulse is changed to the low level lower than the normal level. Thereby, the heat accumulation onto the recording medium, due to the transient response of the laser pulse in the mark period, is reduced, and in the mark period after that, the correct recording mark can be formed. | 01-22-2009 |
| 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 |
