Hal H. Ottesen

List of 112 Issue US Patents May 2005
US 3,390,347	"Sample and Hold Circuit," (June 1968)
US 3,495,235	"Analog to Digital Converter," (February 1970)
US 3,505,668	"Bipolar Analog to Digital Converter," (April 1970)
US 3,540,037	"Time Shared Bipolar Analog to Digital and Digital to Analog Converter," (November 1970)
US 3,882,540	"Readback Circuits for Digital Recorders," (May 1975)
US 4,005,477	"Phase Equalized Readback Apparatus and Methods," (January 1977)
US 4,016,603	"Disk Storage Apparatus Having Signals Recorded in a Specific Format," (April 1977)
US 4,048,660	"Record Track Following and Seeking," (September 1977)
US 4,697,127	"Adaptive Control Technique for a Dynamic System," (September 1987)
US 4,894,599	"Deadbeat Control of Disk Drive Actuator," (January 1990)
US 5,237,466	"Method and Apparatus for Programmably Controlling Spindle Synchronization and Phase Among Disk Drives in a Storage Subsystem," (August 1993)
US 5,267,110	"Rotary Actuator for a Direct Access Storage Device," (November 1993)
US 5,270,880	"Predictive Read/Write Inhibit Decision Using Fuzzy Logic," (December 1993)
US 5,283,521	"Method and System for Adaptive Digital Linearization of an Output Signal from a Magnetoresistive Head," (February 1994)
US 5,301,080	"Bias Servo Loop for Magneto-Resistive Read/Write Head," (April 1994)
US 5,327,298	"Noise Minimization for Magnetic Data Storage Drives Using Oversampling Techniques," (July 1994)
US 5,367,409	"Even Harmonic Distortion Compensation for Digital Data Detection," (November 1994)
US 5,369,533	"Data Storage Device Having Different Storage Densities for Differing Types of Data," (November 1994)
US 5,377,058	"Fly Height Servo Control of Read/Write Head Suspension," (December 1994)
US 5,377,131	"Digital Amplitude Estimator," (December 1994)
US 5,381,282	"Inter-Sample Switching of Servo Control in Direct Access Storage Device," (January 1995)
US 5,392,290	"System and Method for Preventing Direct Access Data Storage System Data Loss from Mechanical Shock During Write Operation," (February 1995)
US 5,410,439	"Disk File with Clearance and Glide Measurement and Early Head Crash Warning," (April 1995)
US 5,422,761	"Disk Drive with Redundant Recording," (June 1995)
US 5,455,723	"Method and Apparatus for Ramp Load and Unload," (October 1995)
US 5,463,758	"System and Method for Reducing Seek Time for Read Operations in Mirrored DASD Files," (October 1995)
US 5,521,778	"Disk Drive With Primary and Secondary Actuator Drives," (May 1996)
US 5,574,604	"Inner Diameter Disk Drive Head/Slider Load/Unload Device," (November 1996)
US 5,594,924	"Multiple User Multimedia Data Server With Switch to Load Time Interval Interleaved Data to Plurality of Time Interval Assigned Buffers, (January 1997)
US 5,619,387	"Disk Storage Device with Special Data Track and Incremental Error Offsets in Angularly Spaced Imbedded Concentric Servo Patterns," (April 1997)
US 5,625,508	"Method and Apparatus for Servo Demodulations in a Direct Access Storage Device," (April 1997)
US 5,630,104	"Apparatus and Method for Providing Multimedia Data," (May 1997)
US 5,633,767	"Adaptive and In-situ Load/Unload Damage Estimation and Compensation," (May 1997)
US 5,654,747	"Intelligent Multimedia Set-top Control Method and Apparatus in which Billing Signals Are Communicated to an Information Network upon Presentation of Downloaded Media Programs," (August 1997)
US 5,682,274	"Method and Apparatus for Positioning Transducers to Correct for Read and Write Element Misregistration Offsets Which Vary Dependent on Rotary Actuator Angular Position Across a Disk Medium," (October 1997)
US 5,721,815	"Media-On-Demand Communication System and Method Employing Direct Access Storage Device," (February 1998)
US 5,721,878	"Multimedia Control System and Method for Controlling Multimedia Program Representation," (February 1998)
US 5,729,397	"System and Method for Recording Direct Access Storage Device Operating Statistics, " (March 1998)
US 5,732,215	"System for Equalizing Operating Temperature by Allocating Infrequently Accessed Data to the High Temperature DASD and Allocating Frequently Accessed Data to the Low Temperature DASD," (March 1998)
US 5,739,972	"Method and Apparatus for Positioning a Magnetoresistive Head Using Thermal Response to Servo Information on the Recording Medium," (April 1998)
US 5,739,994	"Optimally Banded Disk for Use with Multiple Frequency Channel," (April 1998)
US 5,751,510	"Method and Apparatus for Restoring a Thermal Response Signal of a Magnetorestrictive Head," (May 1998)
US 5,751,883	"Multimedia Direct Access Storage Device and Formatting Method," (May 1998)
US 5,764,430	"Disk Drive Having Optimized Spindle Speed for Environment," (June 1998)
US 5,778,135	"Real-Time Edit Control for Video Program Material," (July 1998)
US 5,787,292	"Power Saving Method and Apparatus for Use in Multiple Frequency Zone Drives," (July 1998)
US 5,831,786	"Disk Drive Having Position Sensor for Ramp Load and Unload, and Method for its Use," (November 1998)
US 5,838,514	"Method and Apparatus for Calibrating a Thermal Response of a Magnetoresistive Transducer," (November 1998)
US 5,854,772	"Method and Apparatus for Rotary Actuator Arc Compensation Correction in a Direct Access Storage Device," (December 1998)
US 5,870,241	"Method and Apparatus for Evasive Maneuvering to Keep DASD Heads Away from Protruding Surface Defects," (February 1999)
US 5,872,676	"Method and Apparatus for Positioning a Dual Element Magnetoresistive Head Using Thermal Signals," (February 1999)
US 5,875,066	"Method and Apparatus for Real-time Filtering of a Position Error Signal for a Disk Drive Servo System," (February 1999)
US 5,880,901	"Method and Apparatus for Positioning a Magnetoresistive Head," (March 1999)
US 5,920,441	"Method and apparatus for controlling a multiple-stage actuator for a disk drive," (July 1999)
US 5,930,493	"Multimedia server system and method for communicating multimedia information," (July 1999)
US 5,936,788	"Method and apparatus for ramp load and unload," (August 1999)
US 5,973,870	"Adaptive and in-situ load/unload damage estimation and compensation," (October 1999)
US 5,995,371	"Method and apparatus for real-time filtering of a position error signal for a disk drive servo system," (November 1999)
US 6,002,539	"Method for calibrating a dual element magnetoresistive head," (December 1999)
US 6,002,540	"Method and apparatus for rotary arc compensation correction in a direct access storage device," (December 1999)
US 6,005,742	"Method and apparatus for controlling a multiple-stage actuator for a disk drive," (December 1999)
US 6,023,384	"Data recording device and control apparatus for recording data twice on one track using different encoding methods," (February 2000)
US 6,031,683	"Method for optimization of seek and settle performance in hard disk drives," (February 2000)
US 6,035,351	"Storage of user defined type file data in corresponding select physical format," (March 2000)
US 6,049,441	"Method and apparatus for real-time filtering of a position error signal for a disk drive servo system," (April 2000)
US 6,067,203	"Disk drive having optimized spindle speed for environment," (May 2000)
US 6,078,461	"In situ offset correction for position error signal," (June 2000).
US 6,084,754	"Method and apparatus for positioning a magnetoresistive head using thermal response to servo information on the record medium," (July 2000).
US 6,088,176	"Method and apparatus for separating magnetic and thermal components from an MR head signal," (July 2000)
US 6,097,559	"System and method for detecting head-to-disk contact in-situ a direct access storage device using a position error signal," (August 2000)
US 6,104,562	"Multiple element transducer for magnetic recording," (August 2000)
US 6,154,335	"Method and apparatus for positioning a dual element magnetoresistive head," (November 2000)
US 6,154,858	"In-situ method and apparatus for detecting surface defects to identify handling damage in a disk drive," (November 2000)
US 6,208,804	"Multimedia direct access storage device and formatting method," (March 2001)
US 6,222,697	"Apparatus with the method of unique disk identification for magnetic hard disk drives," (April 2001)
US 6,239,936	"Method and apparatus for calibrating a thermal response of a magnetoresistive element," (May 2001)
US 6,275,345	"System and method for estimating a frequency of slider airbearing resonance," (August 2001)
US 6,281,676	"Rigid disk surface defect detection and classification," (September 2001)
US 6,288,856	"Real-time head-to-disk clearance measuring method and apparatus," (September 2001)
US 6,314,377	"Optimal location of drive assemblies within a multiple drive array," (November 2001)
US 6,384,994	"Method for positioning a magnetoresistive head using a thermal response to servo information on the record medium," (May 2002)
US 6,385,000	"Method and apparatus for extending the operating life of a magnetoresistive transducer in a disk drive system," (May 2002)
US 6,392,841	"Method and apparatus for restoring a thermal response of a magneto-resistive read transducer," (May 2002)
US 6,407,874	"Method and apparatus for detection slider airbearing resonance using SAT P-list data," (June 2002)
US 6,415,238	"Adaptive compensation for arm electronics amplification circuitry of a disk drive system," (July 2002)
US 6,417,982	"System and method for identifying and filtering a head suspension assembly resonance frequency," (July 2002)
US 6,424,484	"Apparatus with and method of unique disk identification for magnetic hard disk drives," (July 2002)
US 6,519,102	"Method and apparatus for implementing an in-situ digital harmonic computation facility for direct access storage device (DASD)," (February 2003)
US 6,529,685	"Multimedia direct access storage device and formatting method," (March 2003)
US 6,556,371	"Generation of higher-order harmonic sine and cosine sequences by indexing a first-order sine/cosine table," (April 2003)
US 6,560,054	"Generation of a fixed angular disk position index in a DASD using a sensorless spindle motor," (May 2003)
US 6,571,310	"Method and apparatus for managing a heterogeneous data storage system," (May 2003)
US 6,608,727	"Method and apparatus for determining the tribology for a head/disk interface," (August 2003)
US 6,631,493	"Method and apparatus for limiting soft error recovery in a disk drive storage device," (October 2003)
US 6,654,191	"Restoration of hard disk drive readback signal in the presence of thermal modulation," (November 2003)
US 6,657,809	"Method and apparatus for positioning a transducer using a phase difference in surface profile variations on a storage medium," (December 2003)
US 6,665,134	"Method and apparatus for detection and analysis of an envelope of a frequency modulated readback signal in a storage system," (December 2003)
US 6,667,111	"Readback signal detection and analysis in a magnetic data storage system," (December 2003)
US 6,674,590	"System and method for estimating a frequency of slider airbearing resonance," (January 2004)
US 6,678,108	"Method and apparatus for identifying spindle imbalance in a hard disk drive," (January 2004)
US 6,683,737	"Method and apparatus for predictive failure analysis technique for head crashes in hard drives using position error signal," (January 2004)
US 6,687,080	"Method and apparatus for improved PES demodulation in the presence of thermal asperities," (February 2004)
US 6,700,728	"Method and disk drive for enhanced performance in the presence of stationary PES outliers," (March 2004)
US 6,717,763	"Power savings method and apparatus for disk drives," (April 2004)
US 6,741,970	"Method and apparatus for enhanced, high speed updating and storing of E-commerce orders in a server," (May 2004)
US 6,762,899	"Method and apparatus for estimating the flyheight of an airbearing slider in a storage device using variable spindle velocity," (July 2004)
US 6,765,745	"Method and apparatus for in situ detection of high-flying sliders over customer data," (July 2004)
US 6,768,607	"Adaptive dual-frequency notch filter," (July 2004)
US 6,775,081	"Servo format for disk drive data storage devices," (August 2004)
US 6,785,079	"Method and apparatus for estimating the flyheight of an airbearing slider in a storage device," (August 2004)
US 6,831,808	"Method and apparatus for determining track identity from abbreviated track identifying data in a disk drive data storage device," (December 2004)
US 6,873,744	"Image restoration from transformed component data," (March 2005)