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Ashitani
Atsuhiko Ashitani, Toyama-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100083898 | Substrate processing apparatus - There are provided an inner tube in which a substrate is stored; an outer tube surrounding the inner tube; a gas nozzle disposed in the inner tube; a gas ejection hole opened on the gas nozzle; a gas supply unit supplying gas into the inner tube through the gas nozzle; a gas exhausts hole opened on the side wall of the inner tube; and an exhaust unit exhausting a space between the outer tube and the inner tube and generating a gas flow in the inner tube toward the gas exhaust hole from the gas ejection hole, wherein the side wall of the inner tube is constituted, so that a distance between an outer edge of the substrate and the gas exhaust hole is set to be longer than a distance between the outer edge of the substrate and the gas ejection hole. | 04-08-2010 |
Tatsuji Ashitani, Yokohama-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20080285402 | OPTICAL DISC APPARATUS AND OPTICAL DISC RECORDING AND REPRODUCING METHOD - According to one embodiment, there is provided an optical disc apparatus including: a recording unit forming a mark and a space on the optical disc by using a laser beam having a set recording power level and, thus, recording data on an optical disc; a reproduction unit reproducing the mark and the space formed on the optical disc; a change amount calculating unit calculating an amount of change in an amplitude of readout signal for the space reproduced by the reproduction unit; and a recording power determining unit determining an optimal recording power level of the laser beam so as to set the calculated amount of change in the amplitude of the readout signal within a predetermined range. | 11-20-2008 |
| 20090034376 | OPTICAL DISC DEVICE AND RECORDING METHOD AS WELL AS RECORDING PARAMETER SETTING METHOD - According to one embodiment, a plurality of conditions are simultaneously recorded for a power in a combination of power and strategy conditions which are parameters to be adjusted, such that the number of seeks required for a feedback can be reduced, and time for an automatic adjustment required at a rising edge can be reduced. | 02-05-2009 |
| 20090168622 | OPTICAL DISK APPARATUS - According to one embodiment, an optical disk apparatus comprises an enable signal generation module configured to generate an enable signal for discriminating a mark and a space in a reproduction signal of an optical disk, a first index calculation module configured to calculate a first evaluation index for evaluating a signal quality of the mark based on a discrimination in accordance with the enable signal and a second index calculation module configured to calculate a second evaluation index for evaluating a signal quality of the space based on the discrimination in accordance with the enable signal. | 07-02-2009 |
Tatsuji Ashitani, Tokyo JP
| Patent application number | Description | Published |
|---|---|---|
| 20080285401 | OPTICAL DISC APPARATUS AND OPTICAL DISC RECORDING AND REPRODUCING METHOD - According to one embodiment, there is provided an optical disc apparatus including: a recording unit forming a mark and a space having a predetermined code length by using a laser beam and, thus, recording data on an optical disc; a crest value acquiring unit acquiring a crest value of the mark and the space for each code length from a readout signal of the optical disc; an asymmetry calculation unit calculating asymmetry value for each code length from the crest value; and a recoding parameter determining unit determining, based on a linear characteristic between the asymmetry value for each code length and the recording power level, an optimal recording parameter including an optimal recording power level of the laser beam, the recoding parameter determining unit determining the optimal recording power level to set the asymmetry value for each code length within a predetermined range. | 11-20-2008 |
| 20080285406 | OPTICAL DISC APPARATUS AND OPTICAL DISC REPRODUCTION METHOD - Provided is an optical disc apparatus which reproduces with use of a PRML method an optical disc having data recorded in a plurality of code lengths, the optical disc apparatus including: an AD conversion unit adapted to convert a reproduction signal of the optical disc into a multi-value digital signal; a waveform equalization unit adapted to perform waveform equalization on the multi-value digital signal on the basis of a predetermined partial response to generate an equalized reproduction signal; a decoding unit adapted to generate decoded data corresponding to data recorded on the optical disc from the equalized reproduction signal; and a crest value extraction unit adapted to extract a crest value for each of the code lengths on the basis of the decoded data and a type of the predetermined partial response. | 11-20-2008 |
Tomoji Ashitani, San Mateo, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20080306981 | Extensible Document Transformation Language: An Innovative Way of Generating Business Document and Report - In various embodiments, a method for generating documents in native application formats includes receiving a document template as a first document according to a native format. The first document is parsed to generate an Extensible Document Transformation Language (XDTL) template representing the document template. An XDTL execution document is generated based on the XDTL template. A second document is then generated according to the native format based on the XDTL execution document. | 12-11-2008 |