Bizarre Patents
A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7586712 | Method of and apparatus for detecting actuator vibration in hard disc drive, and hard disc drive write control method of avoiding effect due to read/write head vibration A method of and an apparatus for detecting an actuator vibration, and a hard disc drive write control method of avoiding an effect due to the actuator vibration. The method of detecting an actuator vibration includes: obtaining a specified number of position error s... | 09/08/2009 |
| 7353406 | Disk array optimizing the drive operation time In accordance with one embodiment of the invention, a storage system is configured as at least one logical unit including at least one disk device; a controller for executing a read processing or a write processing of data having been stored or to be stored in the l... | 04/01/2008 |
| 7286317 | Disk drive that compensates for repeatable runout of a disk based on measured timing between servo information and methods thereof A disk drive includes a rotatable data storage disk, a transducer, an actuator, and a controller. The disk includes information and data tracks that are defined thereon. The transducer is configured to read the information from the disk. The actuator is configured t... | 10/23/2007 |
| 7276874 | Storage apparatus, seek control method and program A movement controlling unit performs movement control of a head toward a target track on a magnetic disk medium driving a head actuator, and a position controlling unit performs position control of the head actuator in accordance with proportional integral calculati... | 10/02/2007 |
| 7274530 | Logical mapping for improved head switching between corresponding tracks in a data handling device In a data handling system having a radially-dependent track incongruity between data surfaces, at least some tracks are logically mapped so that tracks on different data surfaces correspond with one another. The correspondence is defined by the mapping so as to shor... | 09/25/2007 |
| 7271972 | Method and apparatus for reducing seek acoustics using a variable-bandwidth low-pass filter A method and apparatus for reducing seek acoustics in a disk drive using a variable-bandwidth low-pass filter is provided. The variable-bandwidth low-pass filter is used to adaptively shape a control signal supplied to a VCM for moving a head relative to a disk surf... | 09/18/2007 |
| 7206161 | Servo track verification apparatus and servo writer A servo track formed on a tape-like recording medium is verified. An input unit allows a user to input information. A tape drive unit causes the tape-like recording medium to run on a predetermined route. A measurement unit is provided adjacent to the predetermined ... | 04/17/2007 |
| 7197652 | Method and system for energy management in a simultaneous multi-threaded (SMT) processing system including per-thread device usage monitoring A method and system for energy management in a simultaneous multi-threaded (SMT) processing system including per-thread device usage monitoring provides control of energy usage that accommodates thread parallelism. Per-device usage information is measured and stored... | 03/27/2007 |
| 7196859 | Processing techniques for time-based servo patterns Techniques are described for accurately processing playback signals of time-based servo patterns recorded on a data storage medium. In particular, techniques are described for determining values for signal peaks within a playback signal of a time-based servo pattern... | 03/27/2007 |
| 7193799 | Apparatus and method of removing resonance frequency in system An apparatus and a method to remove a resonance frequency of a system in which an unnecessary resonance frequency occurs in a head stack assembly (HSA) having a head for reading/writing data. The HSA is identified and filtered to prevent mechanical damage caused by ... | 03/20/2007 |
| 7185118 | Reliable use of desktop class disk drives in enterprise storage applications Aspects of increasing the quality and reliability of desktop class storage disks in enterprise storage applications are described. The aspects include monitoring a number of idle states and busy states in a disk drive, and limiting performance of read/write commands... | 02/27/2007 |
| 7142381 | Servo writing devices for creating servo patterns with inherent track ID The invention is directed to patterns of amplitude-based servo windows that eliminate the need for conventional track identification marks, and various servo writing devices and head configurations that facilitate creation of such servo patterns. The patterns of ser... | 11/28/2006 |
| 7139151 | Band identification in time-based servopositioning formats Time-based servopositioning systems, methods, formats, and data recording media used in association with the same, employing bands of signals that differ from each other in the polarity of the servo signal, or the orientation of the servo signal, or the pattern widt... | 11/21/2006 |
| 7136256 | Head positioning control method for a storage device and head positioning control device A head positioning method and device positions a head which reads a disk-type storage medium at a specified location, and accurately estimates a bias value during settling control. A disk device includes a disk medium, a head, an actuator, and a control circuit, and... | 11/14/2006 |
| 7133231 | Method and apparatus for recording data on hard disk drive, and storage medium therefor A method of and an apparatus for recording data on a hard disk drive, and a storage medium containing a program for executing the method. Data is recorded on a track in a recording region and an address of a next track to be recorded with the data is determined so t... | 11/07/2006 |
| 7110213 | Positioner for positioning head on a disk A drive current output unit outputs a drive current to an actuator, for moving a head to an intended position on a disk. A drive current adjusting unit adjusts the drive current based on a speed of the head, and a distance of a position of the head from the intended... | 09/19/2006 |
| 7085092 | Head slider receiving variable urging force in recording medium drive The operation of the changing mechanism is set to enhance the intensity of the urging force if the acceleration sensor detects an impact. The head slider is urged against the surface of the recording medium with the urging force of a larger intensity. Accordingly, t... | 08/01/2006 |
| 7075747 | Head position control method and disk device A disk device that has displacement of servo signals in the circumference direction and radius direction between a plurality of disks, prevents a drop in performance due to the displacement when the heads are switched. To deal with the displacement in the circumfere... | 07/11/2006 |
| 7075743 | Method of servo writing for magnetic recording system, magnetic recording system In a method of servo writing of a magnetic recording system and the magnetic recording system, the signal is recorded in a dummy area with a higher recording density than the burst signal. Also, the maximum bit length of the burst area is shortened as compared with ... | 07/11/2006 |
| 7072637 | Method and system for arranging frequently accessed data to optimize power consumption A method and system for optimizing energy consumption during data file read/write operations in a battery powered disk-based memory system is provided. ... | 07/04/2006 |
| 7064914 | Position error signal quality In a method for generating a confidence level of a position error signal (PES) component that is indicative of a quality of the PES component, a PES component is generated using position signal samples of a read back signal corresponding to a servo burst pattern. Ne... | 06/20/2006 |
| 7038872 | Servo patterns with inherent track ID The invention is directed to patterns of amplitude-based servo windows that eliminate the need for conventional track identification marks, and various servo writing devices and head configurations that facilitate creation of such servo patterns. The patterns of ser... | 05/02/2006 |
| 7038871 | Multi-band servo patterns with inherent track ID The invention is directed to patterns of amplitude-based servo windows that eliminate the need for conventional track identification marks, and various servo writing devices and head configurations that facilitate creation of such servo patterns. The patterns of ser... | 05/02/2006 |
| 7009807 | Methods and systems for improved deceleration control for a disk drive Improved deceleration control for a disk drive is provided. A deceleration profile is selected based on a present velocity (vi), a present position (xi) and a BEMF constant associated with a voice coil motor (VCM). A control signal is supplied ... | 03/07/2006 |
| 7002884 | Intermediate power down mode for a rotatable media data storage device The power consumed by a data storage device having at least one disk connected with a spindle can be reduced by reducing the rotation rate of the spindle to a rotation rate greater than zero. In one method in accordance with the present invention, wherein a head is ... | 02/21/2006 |
| 6995946 | Temperature compensation of seek profiles in data storage devices Methods relating to compensating a pre-defined seek profile for use in a data storage device, such as a disc drive, to manage the internal temperature of the device are disclosed. One embodiment disclosed is related to determining a seek profile compensation value t... | 02/07/2006 |
| 6995944 | Head positioning control method for a storage device and head positioning control device A head positioning method and device positions a head which reads disk-type storage medium at a specified location, and accurately estimates estimates a bias value during settling control. A disk device includes a disk medium, a head, an actuator , and a control cir... | 02/07/2006 |
| 6961860 | Method and system for optimizing power consumption during data read/write operation in disk-based memory A method and system for optimizing energy consumption during data read/write operations in a disk-based memory system is provided. The method includes the steps of reading a data clip length, Ls and determining an available energy-optimum recordable track... | 11/01/2005 |
| 6961204 | Head position control method and disk storage device A head position control method controls the speed of the head using the position and the speed detected from the servo information on the disk and directly detects the head speed. The speed detection pattern is assigned to the servo area of the disk, and the speed o... | 11/01/2005 |
| 6944106 | Information recording apparatus for controlling recording power of a recording medium An information recording apparatus that records information with a substantially constant linear density in a circumferential direction of a recording medium having a disk shape, includes variable velocity recording control means, recording power modification means,... | 09/13/2005 |
| 6943970 | Position demodulating method and circuit of disk apparatus Position information PosN and PosQ are compared and position information Pos1 and Pos2 in which influences of an error of a position sensitivity gain appear oppositely are calculated. Subsequently, a weight gain G1=M and a weight gain G2=... | 09/13/2005 |
| 6940680 | Method and apparatus for head positioning control in disk drive A servo system is disclosed which is applied to a disk drive for detecting characteristic frequency components of a position error between a position of the head and the target position, and calculating a control correction value for correcting a control value. The ... | 09/06/2005 |
| 6917490 | System and method for storing information in a disk drive An information handling system includes a processor and a disk drive coupled to receive information from the processor. The disk drive is configured to write the information to a first location on a platter. The disk drive is further configured to write the informat... | 07/12/2005 |
| 6906889 | Magnetic disk drive A magnetic disk drive has a low power consumption state in which the spindle motor is stopped for reducing the average power consumption when no read or write commands have been received. When a read or write command is received, the spindle motor is started. The ti... | 06/14/2005 |
| 6898042 | Slider level microactuator with integrated fly control A microactuator comprises a stator, a rotor and an operator coupling the rotor to the stator. The operator comprises a four-block magnet array supported by either the stator or rotor, and first and second coils supported by the other of the stator or rotor. Current ... | 05/24/2005 |
| 6850383 | Disk drive comprising current sense circuitry for a voice coil motor A disk drive is disclosed comprising a voice coil motor (VCM) for actuating a head radially over a disk. A VCM driver comprises first and second transistors forming a common collector amplifier for sensing a current flowing through a voice coil of the VCM. The commo... | 02/01/2005 |
| 6850384 | Disk drive comprising oscillators and counters for sensing current in a voice coil motor A disk drive is disclosed comprising a voice coil motor (VCM) driver including an H-bridge driver having a first sense resistor connected in series with a supply voltage and a second sense resistor connected in series with ground. First and second amplifiers amplify... | 02/01/2005 |
| 6848019 | Performance in a data storage device using head-to-head offsets in access command scheduling Apparatus and method for improving disc drive performance by compensating for head-to-head offsets when scheduling a plurality of pending access commands. A disc drive includes a plurality of recording surfaces on which a plurality of concentric data tracks are defi... | 01/25/2005 |
| 6738219 | Seek pattern formation circuit A seek pattern formation circuit includes a seek pattern generation circuit for generating a seek pattern formed of a predetermined pulse train every time a step pulse is applied and a seek pattern shaping circuit for shaping the seek pattern and supplying the shape... | 05/18/2004 |
| 6728060 | Disc drive with delayed reassignment write A method of writing to a disc in a disc drive includes receiving data to be written to a designated area of the disc wherein the designated area has a beginning, an end, and contains a defective portion. The data is written to the disc starting from the beginning of... | 04/27/2004 |
