Inventors list |
Assignees list |
Classification tree browser |
Top 100 Inventors |
Top 100 Assignees |
Ishihara, Kawasaki-Shi
Hiroaki Ishihara, Kawasaki-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100225397 | AMPLIFIER AND RADIO - An amplifier includes: a substrate; first to fourth amplifying units arranged on the substrate and each having first and second terminals, and each amplifying first and second signals to generate first and second amplified signals; a first inductive line arranged on the substrate, connecting the first terminal of the first amplifying unit and the first terminal of the second amplifying unit, and having a linear portion and a bending portion; a second inductive line arranged on the substrate, connecting the second terminal of the second amplifying unit and the first terminal of the third amplifying unit, and having a linear portion and a bending portion; a third inductive line arranged on the substrate, connecting the second terminal of the third amplifying unit and the first terminal of the fourth amplifying unit, and having a linear portion and a bending portion; a fourth inductive line arranged on the substrate, connecting the second terminal of the fourth amplifying unit and the second terminal of the first amplifying unit, and having a linear portion and a bending portion; and a fifth inductive line which establishes magnetic field coupling with the first to fourth inductive lines, and has third and fourth terminals, combines the plurality of the first amplified signals amplified to output the first combined signal from the third terminal, and combines the plurality of the second amplified signals to output the second combined signal from the fourth terminal. | 09-09-2010 |
| 20100245160 | FMCW SIGNAL GENERATION CIRCUIT - An FMCW signal generation circuit includes: an oscillator configured to oscillate in an oscillation frequency that is variable in accordance with a control signal being input thereto and output an FMCW signal having the oscillation frequency; a phase detector configured to detect a phase of the FMCW signal; a first differentiator configured to obtain a frequency by differentiating the phase detected by the phase detector; a second differentiator configured to obtain a frequency variation rate by differentiating the frequency obtained by the first differentiator; a subtractor configured to calculate an error between a set frequency variation rate that is set at a given value and the frequency variation rate obtained by the second differentiator; and an integrator configured to generate the control signal for controlling the oscillation frequency of the oscillator by integrating the error calculated by the subtractor. | 09-30-2010 |
Masaaki Ishihara, Kawasaki-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20080218578 | RECORDING APPARATUS - There is provided a recording apparatus in which a pressure contact position of a pinch roller to a conveying roller and a distance between the pressure contact position of the pinch roller and a platen can be properly set corresponding to different recording conditions so that a high quality image can be recorded even under the different recording conditions. A movement of the pressure contact position in which the pressure contact position of the pinch roller | 09-11-2008 |
Shigenori Ishihara, Kawasaki-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20110124200 | METHOD AND APPARATUS OF PLASMA TREATMENT - The present invention provides a plasma treatment apparatus and a conditioning method capable of performing a conditioning for the whole vacuum chamber. A plasma treatment apparatus according to an embodiment of the present invention is provided with a moving means for moving a substrate holder ( | 05-26-2011 |
Yoshiyuki Ishihara, Kawasaki-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20090073600 | POSITIONING CONTROL SYSTEM AND POSITIONING CONTROL METHOD - There is provided with a positioning control system including: a head moving unit; a position detecting unit detecting a head position at predetermined time intervals; an error detecting unit detecting a position error of the head for a target position; a disturbance detecting unit detecting a non-periodic disturbance; a modifying unit modifying a first position error signal corresponding to a first head position detected in a first rotation period based on a second position error signal corresponding to a second head position detected one period length before; and a feedback controller, wherein the modifying unit modifies the first signal after reducing an amplitude of the second position error signal when a detected timing of the second head position is included in a predetermined time range with respect to a detected timing of the non-periodic disturbance detected in a second rotation period which is one period before the first rotation period. | 03-19-2009 |
| 20090109567 | SEEK CONTROL APPARATUS AND METHOD FOR GENERATING CONTROL DATA FOR SEEK CONTROL - There is provided a method for generating acceleration data used in feed-forward control of head seeking, wherein, a seek distance and one of a seek period and the count of samples are received; a weighting factor for the change rate of acceleration between adjacent sample times is determined respectively; and an optimum acceleration at each sample time is obtained by performing an optimization calculation that minimizes an objective function under a constraint condition based on variables representing accelerations at each sample time, either the seek period or the count of samples, and the seek distance. | 04-30-2009 |
| 20090219646 | POSITIONING CONTROL SYSTEM AND METHOD THEREFOR - There is provided with a positioning control system which includes: a head moving unit configured to move a head for recording or reproducing information with respect to a disk capable of recording information; a position detecting unit configured to detect a position of the head; an error detecting unit configured to detect a position error signal of a detected head position with respect to a predetermined target position; a compensation controller configured to generate control input by performing phase lead compensation and phase delay compensation for the position error signal and supply the control input to the head moving unit; and a gain controller configured to control at least one of gains the phase lead compensation and the phase delay compensation based on frequency components contained in the position error signal and an amplitude of the position error signal. | 09-03-2009 |
| 20110019299 | LOAD/UNLOAD CONTROL METHOD AND APPARATUS FOR A MAGNETIC DISK DRIVE - According to one embodiment, an estimation method comprises measuring and creating. The measuring is configured to measure a head velocity and a terminal voltage of a coil of a voice coil motor at least two times before unload in a control system eliminating an influence caused by a transient response of inductance of the voice coil motor. The calculating is configured to a calculate torque constant and a coil resistance based on command voltages and at least two measured head velocities and terminal voltages of the coil. | 01-27-2011 |