Hongawa
Kenichi Hongawa, Shiga JP
Patent application number | Description | Published |
---|---|---|
20100297500 | Negative Electrode Active Material for Lithium Ion Rechargeable Battery and Negative Electrode Using the Same - A negative electrode active material for a lithium ion rechargeable battery having high electrode density, excellent in permeability of an electrolyte, less in capacity loss due to charging/discharging, and excellent in cycle performance is provided at a low cost. Further, there is provided a negative electrode for the lithium ion rechargeable battery, wherein the negative electrode active material as a mixture of three kinds of graphite powders, different in hardness and shape from one another, with a binder added thereto, is coated onto a metallic current collector to be dried and pressed, thereby rendering an electrode density not lower than 1.7 g/cm | 11-25-2010 |
Tadashi Hongawa, Ome-Shi JP
Patent application number | Description | Published |
---|---|---|
20110292533 | MAGNETIC DISK DRIVE AND METHOD FOR REWRITING DATA BLOCK - According to one embodiment, a magnetic disk includes a disk, a controller and an indicator module. The disk includes a plurality of data sectors. The controller is configured to control data rewrite for reading a first data block stored in the disk and writing a second data block corresponding to the read first data block to a write destination on the disk. The indicator module is configured to embed an indicator indicative of an attribute relating to data rewrite in each sector data in the second data block written to the write destination when the each sector data is written to the write destination. | 12-01-2011 |
20110292536 | DATA WRITE CONTROL APPARATUS AND DATA WRITE CONTROL METHOD - According to one embodiment, a data write control apparatus includes a magnetic disk, a write controller, and a retry controller. The magnetic disk includes a track in which data is recorded in sector unit. The write controller is configured to execute control to write a sector data block to a predetermined sector in the track. The retry controller is configured to execute control to retry a write process to a predetermined number of sectors to which data has been written and which include a first sector, and to manage the number of retries performed on each sector. | 12-01-2011 |
Tadashi Hongawa, Tokyo JP
Patent application number | Description | Published |
---|---|---|
20110292538 | RECORDING MEDIUM CONTROLLER AND METHOD THEREOF - According to one embodiment, a recording medium controller includes a recording medium, an input module, a reading module, and a writing module. The recording medium includes a write area and an escape area. The write area includes track groups. Each of the track groups is a unit for writing data and includes tracks. The input module receives a write command for data. The reading module reads data stored in the escape area and data from a first track group of the track groups. The writing module writes data received for the write command to the escape area, and writes merged data obtained by merging the data read from the escape area and the data read from the first track group to each track of a second track group of the track groups by using a shingle recording technique in which adjacent tracks are partly overlapped with each other. | 12-01-2011 |
Yukio Hongawa, Tokyo JP
Patent application number | Description | Published |
---|---|---|
20150176559 | PUMPED STORAGE POWER PLANT - A pumped storage power plant performs a pumping operation by using a pump turbine, upper and lower regulating reservoirs. An upper space of one of the reservoirs is sealable. The pumped storage power plant detects an air pressure in the upper space, first and second water levels of the one and the other reservoirs. A controller of the pumped storage power plant obtains information of the detected air pressure, first and second water levels, and an electrical energy input from an external grid and used during the pumping operation. A calculation water level of the one reservoir is calculated by using the first water level and the air pressure. The controller adjusts the air pressure such that a difference between the second water level and the calculation water level becomes a desired difference that is determined by a characteristic of the pump turbine depending on the input electrical energy. | 06-25-2015 |