51
Pablo A Ziperovich: Real-time DC offset control and associated method. Quantum Corporation, David B Harrison, October 17, 1995: US05459679 (63 worldwide citation)

An apparatus and method for removing direct current (DC) offset from a received analog signal having DC offset introduced during analog signal processing. The preferred circuit has a DC offset control loop that is enabled and operates in real-time during the reading of a sinusoidal preamble pattern. ...


52
Pablo A Ziperovich: Method for in-chip testing of digital circuits of a synchronously sampled data detection channel. Quantum Corporation, David B Harrison, April 7, 1998: US05737342 (62 worldwide citation)

An on-chip self-test circuit for testing digital elements of a synchronous sampling data detection channel chip, such as a PRML channel of a hard disk drive, with digital pseudo samples representative of samples coming from an analog channel section, includes a sample generator generating idealized ...


53
Kelly J Knudson: Reduced complexity EPR4 post-processor for sampled data detection. Quantum Corporation, David B Harrison, May 28, 1996: US05521945 (62 worldwide citation)

An EPR4 detector comprises a PR4 Viterbi detector and an EPR4 post-processor for improving estimated output sequence at an output of the PR4 Viterbi. The PR4 Viterbi detector produces digital estimates of coded digital information values into the channel in accordance with a path through a PR4 trell ...


54
George A Saliba: Media library having locally vectored drive addressing. Quantum Corporation, David B Harrison, March 16, 1999: US05883864 (61 worldwide citation)

Media unit access time within a media library is minimized by revectoring an address of a closest available media unit player to match a logical address of a media unit player specified within a media exchange command received from a host commanding the library to move a media unit from a command-sp ...


55
Timothy Dreszer: Self-tuning memory management for computer systems. Quantum Corporation, Michael Zarrabian, August 27, 2002: US06442661 (61 worldwide citation)

A method of memory management in a computer system comprising memory. The method includes the steps of: in response to requests for allocation of memory blocks that remain allocated for different durations, allocating each memory block from one of a plurality of regions in the memory based on the du ...


56
Arun Balakrishnan, Stephen P Williams: Conductor trace array having interleaved passive conductors. Quantum Corporation, David B Harrison, March 14, 2000: US06038102 (60 worldwide citation)

A trace conductor array includes an electrically insulative support substrate and a plurality of electrical signal trace conductors formed along substantially parallel paths in a single layer on the substrate. The electrical signal trace conductors each have a plurality of spaced apart trace conduct ...


57
Scott B Russell, Tuan N Nguyen, Marvin P Milock: Shock mounted disk drive module having snap-lock cover. Quantum Corporation, David B Harrison, June 1, 1993: US05216582 (59 worldwide citation)

A housing assembly forms a fixed disk drive module for a low profile fixed disk drive shock-mounted therein. A frame defines front and a rear endwalls and two sidewalls. Each sidewall defines on one edge a row of enclosed cover slots having receiving portions and latching portions and on the other e ...


58
William N Thanos, Bruce R Peterson, William G Moon, Joshua Lindsay, Thomas R Stone: Head position control system for fixed drive including position encoder, temperature sensor and embedded fine servo information. Quantum Corporation, David B Harrison, January 28, 1992: US05084791 (59 worldwide citation)

A micro-Winchester disk drive subsystem includes a data block sequencer, cache memory and interface for a host computing machine. The drive includes a base and a plurality of non-removable directly rotated disks forming data storage surfaces. A balanced rotary head transducer actuator is mounted to ...


59
Michael L Raab: Secondary clock source for low power, fast response clocking. Quantum Corporation, David B Harrison, August 27, 1996: US05550489 (58 worldwide citation)

An integrated digital logic circuit includes a free-running secondary clock oscillator for generating free-running clocking pulses and a frequency-stabilized master oscillator for generating primary clocking pulses. A clock signal selector selects and puts out either the secondary clocking pulses or ...


60
Joel B Kamerman, Michael A Mihalik, Kim S Porter: Stackable modular storage tower. Quantum Corporation, Rives Stoel, May 7, 1996: US05515239 (58 worldwide citation)

A storage column structure includes multiple storage column elements that interlock together in a vertical stack to form a compact, unitary tower assembly. A power supply module is positioned as a base unit to provide stability for the tower assembly. Each of the remaining storage column elements is ...