134results about How to "Improve driving reliability" patented technology

A hard disk drive utilizes hard disks that recover the historically unused read / write space or real estate located in the load / unload zone. Approximately one-half of the load / unload zone is recovered and available for reading and writing operations by forming a first or radially outermost read / write track beginning immediately adjacent to the inner radial edge of the load / unload zone and proceeding radially inward from there to the conventional location of first tracks in the prior art. In another version of the invention, almost the entire load / unload zone is recovered and available for reading and writing operations by aligning the first track with the center of the load / unload zone and proceeding radially inward from there as described above. Both of these versions make significant additional surface area on the disk available where, in the prior art, no data was stored, thereby increasing the efficiency and storage capacity of the hard disk drive.

A generally diamond-shaped detection electrode is formed in the approximate center of the piezoelectric element. The strain resulting from the bending secondary vibration mode in the vicinity of the detection electrode is minimized because the detection electrode is formed in such a manner as to include a vibrational node of the longitudinal primary vibrational mode and a vibrational node of the bending secondary vibrational mode. As a result, when the phase difference between the drive signal and the detection signal is detected, the effect of vibration in the bending secondary vibration mode on the detected phase difference can be suppressed and a single drive frequency can be determined with respect to a prescribed phase difference. Thus, the drive performance of the vibrating body with respect to a driven body (i.e., a body driven by the vibrating body) can be reliably improved because, by controlling the drive frequency such that the phase difference equals a prescribed value, the vibrating body can be made to vibrate at a desired frequency and vibrate in such a manner that the desired vibration components are achieved in each vibration mode.

A gate driving circuit includes a first shift register and a second shift register for driving odd gate lines. The first shift register includes a first plurality of cascade-connected stages that sequentially output a plurality of first gate signals. A first stage of the first shift register receives a first vertical start signal. The second shift register includes a second plurality of cascade-connected stages to sequentially output a plurality of second gate signals. The first stage of the second shift register receives an output signal of the first stage of the first shift register as its vertical start signal. A data charging rate may be improved by ensuring the timing margin of each gate signal, so that the driving reliability of the gate driving circuit may be improved.

A hard disk drive utilizes hard disks that recover the historically unused read / write space or real estate located in the load / unload zone. Approximately one-half of the load / unload zone is recovered and available for reading and writing operations by forming a first or radially outermost read / write track beginning immediately adjacent to the inner radial edge of the load / unload zone and proceeding radially inward from there to the conventional location of first tracks in the prior art. In another version of the invention, almost the entire load / unload zone is recovered and available for reading and writing operations by aligning the first track with the center of the load / unload zone and proceeding radially inward from there as described above. Both of these versions make significant additional surface area on the disk available where, in the prior art, no data was stored, thereby increasing the efficiency and storage capacity of the hard disk drive.