Patents by Inventor Mark Alfred Lantz

Mark Alfred Lantz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12131761
    Abstract: In response to a rotation of timing-based servo (TBS) patterns of a first servo band and a second servo band, heights of top and bottom portions of servo stripes of servo frames of the TBS patterns are adjusted to compensate for changes in a usable height of the servo stripes caused by the rotation.
    Type: Grant
    Filed: April 12, 2023
    Date of Patent: October 29, 2024
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Nhan Xuan Bui, Mark Alfred Lantz, Simeon Furrer, Robert Biskeborn
  • Publication number: 20240274154
    Abstract: A computer-implemented method and a related tape library system for controlling an operation of a tape library system comprising at least one magnetic-tape drive unit and a plurality of tape cartridges, wherein the operation of the tape library system comprises a usage optimization of available resources of the tape library system, is disclosed. The method comprises determining a load value of the resources of the tape library system, accumulating requests to a tape cartridge in a batch before using tape library system to physically accessing the tape cartridge, and dynamically adjusting a number of requests in the batch before physically accessing the tape cartridge dependent on the load value such that a response time of the tape library system is optimized.
    Type: Application
    Filed: July 13, 2023
    Publication date: August 15, 2024
    Inventors: Ilias Iliadis, Mark Alfred Lantz, Slavisa Sarafijanovic
  • Patent number: 12062384
    Abstract: A computer-implemented method and a related tape library system for controlling an operation of a tape library system comprising at least one magnetic-tape drive unit and a plurality of tape cartridges, wherein the operation of the tape library system comprises a usage optimization of available resources of the tape library system, is disclosed. The method comprises determining a load value of the resources of the tape library system, accumulating requests to a tape cartridge in a batch before using tape library system to physically accessing the tape cartridge, and dynamically adjusting a number of requests in the batch before physically accessing the tape cartridge dependent on the load value such that a response time of the tape library system is optimized.
    Type: Grant
    Filed: July 13, 2023
    Date of Patent: August 13, 2024
    Assignee: International Business Machines Corporation
    Inventors: Ilias Iliadis, Mark Alfred Lantz, Slavisa Sarafijanovic
  • Publication number: 20240233756
    Abstract: In an approach to improve write transducers a write transducer for recording data on a magnetic media is disclosed. The write transducer comprises a first pole piece. The write transducer further comprises a second pole piece. The first pole piece and the second pole piece are arranged in such a way, that a write gap is formed between the first pole piece and the second pole piece. A longitudinal axis is defined between opposite ends of the write gap. A length of the write gap along the longitudinal axis varies in the direction transverse to the longitudinal axis.
    Type: Application
    Filed: October 21, 2022
    Publication date: July 11, 2024
    Inventors: Hugo E. Rothuizen, Mark Alfred Lantz, Jason Liang, Icko E. T. Iben
  • Patent number: 12014755
    Abstract: In one aspect of the present disclosure, the degree of side erasure occurring in neighboring tracks is controlled by controlling the skew angle of the tape head, relative to the longitudinal direction of motion of the tape past the head as a track is written. In one embodiment, the tape head is rotated relative to the longitudinal direction of tape travel, and the trailing edge of the tape head which forms an acute angle with the edge of a track being written, is used for writing tracks at a desired track pitch. Other aspects and advantages may be provided, depending upon the particular application.
    Type: Grant
    Filed: July 31, 2023
    Date of Patent: June 18, 2024
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Mark Alfred Lantz, Hugo E. Rothuizen, Simeon Furrer, Stella Brach, Jason Liang, Icko E. T. Iben, Georg Lothar Lauhoff, David Lee Swanson
  • Patent number: 11994169
    Abstract: Provided are a tape guide roller and tape drive having a guide roller having magnets and bushings to stabilize a roller barrel for a tape medium. The tape guide roller has a roller barrel extending around a vertical axis. The tape medium passes across the roller barrel to guide the tape medium on a tape path. A plurality of magnets positioned with respect to the vertical axis provide an axial force to stabilize the tape guide roller axially.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: May 28, 2024
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kevin Bruce Judd, Walter Haeberle, Simeon Furrer, Mark Alfred Lantz, Armando Argumedo
  • Patent number: 11972783
    Abstract: In one general embodiment, a data storage product includes a magnetic recording tape having written thereon at least two servo tracks extending along a longitudinal axis of the tape. Each servo track has a timing-based servo (TBS) pattern comprising a series of servo frames arranged to enable lateral positioning of a magnetic head relative to the servo tracks as well as tape dimensional stability (TDS) compensation via head skew. Each frame comprises a sequence of pairs of leading and trailing servo stripes. Midpoints between the servo stripes in each pair, at all points having a same relative lateral height on the tape, are located along a virtual median line oriented at an angle ? from perpendicular to the longitudinal axis of the tape, the angle ? being greater than 1 degree.
    Type: Grant
    Filed: March 29, 2023
    Date of Patent: April 30, 2024
    Assignee: International Business Machines Corporation
    Inventors: Nhan Xuan Bui, Kevin Bruce Judd, Simeon Furrer, Mark Alfred Lantz
  • Publication number: 20240135963
    Abstract: In an approach to improve write transducers a write transducer for recording data on a magnetic media is disclosed. The write transducer comprises a first pole piece. The write transducer further comprises a second pole piece. The first pole piece and the second pole piece are arranged in such a way, that a write gap is formed between the first pole piece and the second pole piece. A longitudinal axis is defined between opposite ends of the write gap. A length of the write gap along the longitudinal axis varies in the direction transverse to the longitudinal axis.
    Type: Application
    Filed: October 20, 2022
    Publication date: April 25, 2024
    Inventors: Hugo E. Rothuizen, Mark Alfred Lantz, Jason Liang, Icko E. T. Iben
  • Patent number: 11948608
    Abstract: An apparatus such as a device having a writer for magnetic media has a trailing pole piece having a portion adjacent a write gap, the portion having a throat height (h1) of between about 100 and about 800 nm, and an aspect ratio of thickness/throat height (t1/h1) in a range of 0.5 and 2.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: April 2, 2024
    Assignee: International Business Machines Corporation
    Inventors: Hugo E. Rothuizen, Icko E. T. Iben, Robert Fontana, Mark Alfred Lantz
  • Publication number: 20240060537
    Abstract: Provided are a tape guide roller and tape drive having a guide roller having magnets and bushings to stabilize a roller barrel for a tape medium. The tape guide roller has a roller barrel extending around a vertical axis. The tape medium passes across the roller barrel to guide the tape medium on a tape path. A plurality of magnets positioned with respect to the vertical axis provide an axial force to stabilize the tape guide roller axially.
    Type: Application
    Filed: August 22, 2022
    Publication date: February 22, 2024
    Inventors: Kevin Bruce JUDD, Walter HAEBERLE, Simeon FURRER, Mark Alfred LANTZ, Armando ARGUMEDO
  • Patent number: 11862194
    Abstract: A data storage system comprises: a head configured to produce a signal representing data stored on a storage medium; an estimator configured to determine an estimated signal comprising a superposition of an estimated linear portion of a partial-response equalizer output and an estimated nonlinear portion of the signal; a bank of noise whitening filters configured for filtering a difference between the signal and the estimated signal; a branch metric calculator configured to calculate branch metrics based on the filtered signal; and an adaptive data-dependent noise-predictive maximum likelihood sequence detector configured to generate an output stream representing the data based on the one or more branch metrics.
    Type: Grant
    Filed: December 1, 2022
    Date of Patent: January 2, 2024
    Assignee: International Business Machines Corporation
    Inventors: Roy Cideciyan, Simeon Furrer, Mark Alfred Lantz
  • Patent number: 11837263
    Abstract: Provided are a tape erase element, tape erase device, and method for forming a tape erase element to erase content of a tape medium. The tape erase element comprises a housing forming a gap extending along a length of an outer surface of the housing. The gap extends from the outer surface of the housing to open into an inner space formed within the housing. A magnet is positioned within the inner space of the housing and having a surface extending across the gap. The magnet produces a magnetic flux that extends through a tape contact zone extending across a portion of the outer surface of the housing and the gap to erase content on the tape medium as the tape guide rollers guide the tape medium across the housing through the tape contact zone.
    Type: Grant
    Filed: August 18, 2022
    Date of Patent: December 5, 2023
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: David Harper, Hugo E. Rothuizen, Mark Alfred Lantz, Edwin Ralph Childers
  • Publication number: 20230317103
    Abstract: A magnetic recording tape comprises a tape substrate, a perpendicular magnetic recording layer disposed over the tape substrate, and a soft-magnetic underlayer disposed between the recording layer and the tape substrate. The perpendicular magnetic recording layer comprises magnetic particles suspended in a binder material, and the soft-magnetic underlayer comprises a continuous film of soft-magnetic material. The magnetic particles in the recording layer comprise one of barium ferrite, strontium ferrite, epsilon iron oxide and chromium dioxide. Tape storage apparatus employing such tape is also provided. The apparatus comprises a read/write head having at least one probe write-head for writing data by perpendicular recording on magnetic tape, at least one reel of magnetic tape as defined above, and a tape transport mechanism for transporting the magnetic tape past the read/write head.
    Type: Application
    Filed: January 24, 2022
    Publication date: October 5, 2023
    Inventors: MARK ALFRED LANTZ, HUGO E. ROTHUIZEN, SIMEON FURRER, ROBERT FONTANA
  • Publication number: 20230253011
    Abstract: In response to a rotation of timing-based servo (TBS) patterns of a first servo band and a second servo band, heights of top and bottom portions of servo stripes of servo frames of the TBS patterns are adjusted to compensate for changes in a usable height of the servo stripes caused by the rotation.
    Type: Application
    Filed: April 12, 2023
    Publication date: August 10, 2023
    Inventors: Nhan Xuan Bui, Mark Alfred Lantz, Simeon Furrer, Robert Biskeborn
  • Patent number: 11682423
    Abstract: In response to a rotation of timing-based servo (TBS) patterns of a first servo band and a second servo band, heights of top and bottom portions of servo stripes of servo frames of the TBS patterns are adjusted to compensate for changes in a usable height of the servo stripes caused by the rotation.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: June 20, 2023
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Nhan Xuan Bui, Mark Alfred Lantz, Simeon Furrer, Robert Biskeborn
  • Publication number: 20230154488
    Abstract: An apparatus such as a device having a writer for magnetic media has a trailing pole piece having a portion adjacent a write gap, the portion having a throat height (h1) of between about 100 and about 800 nm, and an aspect ratio of thickness/throat height (t1/h1) in a range of 0.5 and 2.
    Type: Application
    Filed: February 25, 2022
    Publication date: May 18, 2023
    Inventors: Hugo E. Rothuizen, Icko E.T. Iben, Robert Fontana, Mark Alfred Lantz
  • Patent number: 11494445
    Abstract: A method for data storage tape access ordering is provided. The method receives an order request for accessing a plurality of data segments stored on a data storage tape. Each data segment is defined by segment characteristics. The method identifies a number of data segments within the plurality of data segments in the order request. The method determines an order model based on the number of data segments and the segment characteristics of the plurality of data segments. The method generates an access order for the plurality of data segments based on the order model and retrieves a subset of data segments from the data storage tape based on the access order.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: November 8, 2022
    Assignee: International Business Machines Corporation
    Inventors: Slavisa Sarafijanovic, Mark Alfred Lantz, Paul Merrill Greco
  • Patent number: 11373676
    Abstract: An apparatus includes an array of write transducers. Each write transducer includes a lower yoke, a lower write pole piece comprising a lower base layer in magnetic communication with the lower yoke and a lower high moment layer above the lower base layer. Each write transducer includes a write gap above the lower write pole piece and an upper write pole piece above the write gap. The upper write pole piece includes an upper high moment layer above the write gap and an upper base layer above the upper high moment layer. Each write transducer includes an upper yoke above the upper base layer. A media facing side of the lower pole piece and at least a portion of a media facing side of the upper pole piece extend along a plane and the remainder of the media facing side of the upper pole piece is recessed from the plane.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: June 28, 2022
    Assignee: International Business Machines Corporation
    Inventors: Robert Fontana, Icko E. T. Iben, Mark Alfred Lantz, Hugo E. Rothuizen, Simeon Furrer
  • Publication number: 20220108718
    Abstract: In response to a rotation of timing-based servo (TBS) patterns of a first servo band and a second servo band, heights of top and bottom portions of servo stripes of servo frames of the TBS patterns are adjusted to compensate for changes in a usable height of the servo stripes caused by the rotation.
    Type: Application
    Filed: October 1, 2020
    Publication date: April 7, 2022
    Inventors: Nhan Xuan Bui, Mark Alfred Lantz, Simeon Furrer, Robert Biskeborn
  • Patent number: 11243697
    Abstract: Technology for choosing a design for a computer data storage system having a prescribed reliability. The selection of a “matching storage system,” matching the prescribed reliability is based on computation of first and second reliability indicators.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: February 8, 2022
    Assignee: International Business Machines Corporation
    Inventors: Praveen Viraraghavan, Ilias Iliadis, Mark Alfred Lantz