Bizarre Patents
Cloaking System Using Optoelectronically Controlled Camouflage
A Cloaking System designed to operate in the visible light spectrum, utilizes optoelectronics and/or photonic components to conceal an object within it.
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 |
| 7804657 | Setting an operating bias current for a magnetoresistive head using ratio of target voltage and measured voltage A method is disclosed for setting an operating bias current for a magnetoresistive (MR) element. A bias current is applied to the MR element, and a voltage across the MR element is measured corresponding to the bias current. The bias current is then adjusted in resp... | 09/28/2010 |
| 7675707 | Disk drive employing repeatable disturbance compensation for fly height control A disk drive is disclosed comprising a disk, a head actuated over the disk, and control circuitry operable to generate a fly height control signal. A fly height of the head is measured, and the measured fly height is combined with a target fly height and a feedforwa... | 03/09/2010 |
| 7672072 | Disk drive modifying an update function for a refresh monitor in response to a measured duration A disk drive is disclosed including a disk, and a head actuated over the disk. A refresh monitor is maintained for data stored on the disk, wherein the refresh monitor comprises an update function responsive to an operating parameter of the disk drive. A duration mo... | 03/02/2010 |
| 7671599 | Static electricity monitor comprising a walking footpad electrode and handrail electrode A static electricity monitor is disclosed operable to test a garment worn by a person, the garment comprising a first piece of footwear worn on a first foot of the person. The static electricity monitor comprises a first footpad electrode having a length of at least... | 03/02/2010 |
| 7669711 | Disk pack balancing station A disk pack balancing station is disclosed for balancing a disk pack assembly, the disk pack assembly comprising a plurality of components including a plurality of disks coupled to a hub of a spindle motor with at least one disk spacer between the disks. The disk pa... | 03/02/2010 |
| 7660067 | Disk drive initializing a coil temperature estimation algorithm using a resistance of the coil estimated during a load operation A disk drive is disclosed including a disk, a head coupled to a distal end of an actuator arm, and a voice coil motor (VCM) operable to rotate the actuator arm about a pivot to actuate the head radially over the disk, wherein the VCM comprises a coil. Control circui... | 02/09/2010 |
| 7656763 | Calibrating a defect scan parameter for a disk drive A method is disclosed for performing a defect scan for a disk drive. Data is recorded on a first data area of a disk substantially free from defects and on a second data area of the disk substantially affected by at least one defect. A defect scan parameter is initi... | 02/02/2010 |
| 7656607 | Disk drive comprising a servo accelerator employing a dual state variable memory A disk drive is disclosed operable to generate an actuator control signal for actuating a head over a disk. A memory address is used to read a first state k variable from a first state variable memory SVM1. The first state k variable is stored in a second sta... | 02/02/2010 |
| 7656604 | Disk drive demodulating a spiral track by finding a maximum correlation between a spiral track crossing signal and a time-shifted nominal spiral track crossing signal A disk drive is disclosed comprising a disk including a plurality of spiral tracks, wherein each spiral track comprises a high frequency signal interrupted by a sync mark at a sync mark interval, and a head actuated over the disk. The spiral tracks are demodulated b... | 02/02/2010 |
| 7653983 | Manufacturing assembly for manufacturing a disk drive A manufacturing assembly is disclosed for manufacturing a disk drive. The manufacturing assembly comprises a pre-merge arm having a contact surface for contacting an actuator arm of the disk drive, and an actuator operable to actuate the pre-merge arm. When installi... | 02/02/2010 |
| 7653927 | System and method for selecting a pay per view program to be transmitted to a program receiver The present invention may be regarded as personal video recorder and a method of selecting a pay per view program to be transmitted to a personal video recorder having a program receiver. A schedule of pay per view programs is obtained. Each of the pay per view prog... | 01/26/2010 |
| 7649704 | Disk drive deferring refresh based on environmental conditions A disk drive is disclosed including a disk having a plurality of tracks, and a head actuated over the disk. A refresh monitor is maintained for refreshing data stored on the disk. A need for a refresh operation is detected when the refresh monitor exceeds a first th... | 01/19/2010 |
| 7647544 | Disk drive implementing data path protection without writing the error detection code data to the disk A disk drive is disclosed comprising a disk, a buffer memory, and control circuitry operable to receive a write command from a host, wherein the write command comprises write data and a write data address. Write EDC data is generated in response to the write data an... | 01/12/2010 |
| 7630162 | Disk drive servoing off of first head while determining fly height for second head A method is disclosed for selecting a dynamic fly height (DFH) control setting for a head in a disk drive, the disk drive comprising a plurality of disk surfaces and plurality of respective heads. The method comprises servoing a first head over a first disk surface ... | 12/08/2009 |
| 7626782 | Disk drive employing iterative learning control for tuning seek servo loop A disk drive is disclosed operable to seek a head from a first radial location over a disk to a second radial location over the disk. A reference signal is initialized, a feed-forward control signal is initialized, and a seek is initiated. During the seek operation,... | 12/01/2009 |
| 7619844 | Disk drive comprising a mechanical position sensor to prevent a runaway condition A disk drive is disclosed including a disk having a plurality of servo sectors that define a plurality of servo tracks, an actuator arm, a head attached to a distal end of the actuator arm, a mechanical position sensor operable to detect an estimated position of the... | 11/17/2009 |
| 7619841 | Disk drive subtracting low frequency disturbance from a servo burst signal A disk drive is disclosed including a disk having a plurality of data tracks, wherein each data track comprises a plurality of data sectors and a plurality of servo sectors, and each servo sector comprises a plurality of servo bursts. A data path comprising a data d... | 11/17/2009 |
| 7602575 | Disk drive adjusting estimated reader/writer offset to achieve target burst crossing signal amplitude when propagating servo sectors A disk drive is disclosed comprising control circuitry for self servo writing a disk. An estimated reader/writer offset is initialized, servo bursts in a first servo track are read, the head is moved radially using the estimated reader/writer offset, and propagated ... | 10/13/2009 |
| 7599139 | Disk drive having a high performance access mode and a lower performance archive mode A disk drive is disclosed including a disk having a plurality of tracks, and a head actuated over the disk. A write frequency of write data received from a host is monitored. When the write frequency falls below a threshold, the disk drive is configured to operate i... | 10/06/2009 |
| 7583470 | Disk drive writing wedge RRO data along a sinusoidal path to compensate for reader/writer offset A disk drive is disclosed including a disk having a plurality of tracks, wherein each track comprises a plurality of servo sectors. The disk drive further comprises a head having a read element offset from a write element by a reader/writer offset. The read element ... | 09/01/2009 |
| 7583466 | Disk drive determining operating fly height by detecting head disk contact from disk rotation time A disk drive is disclosed including a disk having a plurality of tracks, wherein each track comprises a plurality of data sectors and a plurality of servo sectors. The disk drive further comprises a spindle motor for rotating the disk, and a head actuated radially o... | 09/01/2009 |
| 7576941 | Disk drive writing wedge RRO values in a butterfly pattern A disk drive is disclosed comprising a plurality of servo sectors that define a plurality of tracks, and a head comprising a read element radially offset from a write element. The read element is positioned over a first track, and the first track is read to generate... | 08/18/2009 |
| 7573670 | Disk drive seeking to OD track and then ramping velocity to implement fast unload A disk drive is disclosed including a disk having a plurality of tracks, wherein each track comprises a plurality of embedded servo sectors. A head connected to a distal end of an actuator arm is rotated about a pivot by a voice coil motor (VCM) in order to actuate ... | 08/11/2009 |
| 7562282 | Disk drive employing error threshold counters to generate an ECC error distribution A disk drive is disclosed comprising a head actuated over a disk. A redundancy generator generates a plurality of redundancy symbols appended to user data to form a codeword C(x) written to a selected data sector on the disk. During a read operation, a syndrome gene... | 07/14/2009 |
| 7548392 | Disk drive controlling a voice coil motor during an emergency unload A disk drive is disclosed including a disk, a spindle motor operable to rotate the disk, a head, and a voice coil motor (VCM) operable to actuate the head over the disk, wherein the VCM comprises a voice coil. The disk drive further comprises a capacitor, and a back... | 06/16/2009 |
| 7539924 | Disk drive implementing data path protection by encoding large host blocks into sub blocks A disk drive is disclosed including a disk having a plurality of data tracks, wherein each data track includes a plurality of data sectors. A head is actuated over the disk for accessing the data sectors. A write command is received from a host, wherein the write co... | 05/26/2009 |
| 7518819 | Disk drive rewriting servo sectors by writing and servoing off of temporary servo data written in data sectors A disk drive is disclosed comprising a disk having a plurality of tracks, wherein each track comprises a plurality of data sectors and a plurality of servo sectors. The disk drive further comprises a head actuated over the disk, the head comprising a read element ra... | 04/14/2009 |
| 7505223 | Compensating for non-linear thermal expansion when writing spiral tracks to a disk of a disk drive A method of writing spiral tracks for a disk drive is disclosed. A first concentric reference track is written at a first radial location near an outer diameter of a disk surface, a second concentric reference track is written at a second radial location near an inn... | 03/17/2009 |
| 7502197 | Disk drive demodulating a time-based servo pattern A disk drive is disclosed including a disk having a first and second set of time-based servo patterns. The first set of time-based servo patterns comprises a first cyclical pattern that repeats radially over the disk, and the second set of time-based servo patterns ... | 03/10/2009 |
| 7502195 | Compensating for thermal expansion when writing spiral tracks to a disk of a disk drive A method is disclosed for writing M spiral tracks (i=1 to M) to a disk of a disk drive. A head is positioned over a first radial location to write a concentric reference track comprising N concentric servo sectors. Prior to writing one of the spiral tracks, the conc... | 03/10/2009 |
| 7499236 | Calibrating correlation between PES and off-track displacement by processing high frequency signal in spiral track A method is disclosed for writing product servo sectors to the disk of a disk drive by demodulating spiral tracks recorded on the disk. Each spiral track comprises a high frequency signal interrupted at a predetermined interval by a sync mark. The high frequency sig... | 03/03/2009 |
| 7495857 | Servo writing a disk drive by writing spiral tracks using a mechanical position sensor A disk drive is disclosed including a disk, an actuator arm, a head attached to a distal end of the actuator arm, a mechanical position sensor operable to generate a position signal representing a position of the head relative to the disk, and a voice coil motor for... | 02/24/2009 |
| 7489464 | Servo writing a disk drive using a secondary actuator to control skew angle A method of servo writing a plurality of servo sectors to a disk of a disk drive to define a plurality of data tracks is disclosed. The disk drive comprises the disk, an actuator arm, a head coupled to a distal end of the actuator arm, wherein the head comprises a r... | 02/10/2009 |
| 7486060 | Switching voltage regulator comprising a cycle comparator for dynamic voltage scaling A switching voltage regulator is disclosed for regulating a voltage supplied to system circuitry. The switching voltage regulator comprises an oscillator operable to generate an oscillator signal representing a gate speed of a reference circuit in the system circuit... | 02/03/2009 |
| 7480116 | Disk drive employing coarse position feedback from mechanical position sensor to improve format efficiency A disk drive is disclosed including a disk having a plurality of servo tracks. The servo tracks are banded together to form a plurality of servo track bands, and each servo sector comprises a fine track address that identifies one of the servo tracks. The disk drive... | 01/20/2009 |
| 7477471 | Disk drive employing offset compensation for velocity control of a voice coil motor A disk drive is disclosed employing a VCM control loop comprising a voltage detector operable to detect a back EMF voltage across a voice coil of a voice coil motor, a current detector operable to detect a current flowing through the voice coil, and a control voltag... | 01/13/2009 |
| 7471483 | Disk drive compensating for rotational vibrations, physical shocks, and thermal popping A disk drive is disclosed comprising a disk, and a head actuated radially over the disk. A first linear acceleration signal is generated representing a first acceleration disturbance, a second linear acceleration signal is generated representing a second acceleratio... | 12/30/2008 |
| 7471486 | Disk drive estimating seek time according to a seek profile and a variance group A disk drive is disclosed which receives a plurality of access commands from a host, where each access command identifies a target track. The access commands are stored in a command queue, and for each command in the command queue, a seek length is computed correspo... | 12/30/2008 |
| 7468855 | Servo writing a disk drive from a number of spiral tracks equal to a non-integer multiple of product servo wedges A method is disclosed of writing product servo sectors to a disk of a disk drive to define a plurality of product servo wedges, the disk comprising a plurality of spiral tracks. The spiral tracks are spaced apart circumferentially by a substantially equal spacing, a... | 12/23/2008 |
| 7458282 | Screwdriver comprising a slider having an attached screw bit and a position detector for position feedback A screwdriver is disclosed comprising a base, a carriage moveably coupled to the base, an actuator operable to move the carriage relative to the base, and a slider comprising an attached screw bit, wherein the slider is coupled to the base through the carriage and t... | 12/02/2008 |
