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Title |
Order No |
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Parent |
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Adaptive Misposition Correcting Method and Apparatus for Magnetic Disk Servo System
A method and apparatus for correcting alignment errors in a magnetic disk drive servo system by dynamically and iteratively measuring and compensating for position errors.
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4,536,809
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Bidirectional Retrieval of Magnetically Recorded Data
A patent describing a method and apparatus for accurately identifying and retrieving digital data from magnetic storage media while moving in either forward or reverse directions.
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3387293
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Bidirectional Retrieval of Magnetically Recorded Data
A method and apparatus for retrieving data from magnetic media in both forward and reverse directions using specialized mark tracks.
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3,387,293
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DIFFERENTIAL LINEAR VELOCITY TRANSDUCER
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XX-31ED7-56
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Frequency-Independent, Self-Clocking Encoding Technique and Apparatus for Digital Communications
A digital encoding method that transmits data using bipolar, self-clocking pulses to eliminate DC components, allowing for frequency-independent communication.
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4,475,212
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Interface Between a Pair of Processors, Such as Host and Peripheral-Controlling Processors in Data Processing Systems
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XX-772F5-16
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Interface Between a Pair of Processors, Such as Host and Peripheral-Controlling Processors in Data Processing Systems
A description of a communications interface for data processing systems that synchronizes processors via memory-based ring buffers without needing a hardware bus interlock.
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4,449,182
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Interface Between a Pair of Processors, Such as Host and Peripheral-Controlling Processors in Data Processing Systems
This patent describes an interface mechanism that allows two processors to communicate efficiently over a bus lacking hardware interlock capabilities.
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4,449,182
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Phase Locked Loop with Bandwidth Ramp
A patent for a phase locked loop (PLL) that adjusts its bandwidth monotonically to improve lock acquisition and noise immunity.
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4,954,788
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Positioning System and Formatting Scheme for Magnetic Tape Media
A magnetic tape positioning and formatting system that uses multi-density recording to reliably identify data records, beginning-of-tape, and end-of-tape markers.
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4,321,632
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PRECISION SETTING OF CURRENTS AND REFERENCE VOLTAGES
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XX-519B5-A5
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System for Interrupt Arbitration
This patent describes an arbitration method for data processing systems that allows an interrupting unit to request and obtain system bus access for transmitting an interrupt vector.
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4,381,542
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TESTER FOR COLLISION-DETECT CIRCUITRY
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XX-79812-3F
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Transducer Positioning System and Data Disk Therefor
This document describes a magnetic disk drive servo system that uses asymmetrical servo information signals for track seeking and following.
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4,390,912
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