By Sensing Driving Condition Of Record Carrier, E.g. Travel, Tape Tension [n: See Provisional Also G9b/15.019, G9b/15.034, G9b/15.054] {g11b 15/093} Patents (Class G9B/15.012)
  • MULTILEVEL PULSE POSITION MODULATION FOR EFFICIENT ENCODING OF INFORMATION INTO SERVO PATTERNS
    Publication number: 20110102927
    Abstract: A storage medium on which servo patterns are encoded to provide lateral and longitudinal position (LPOS) information is provided. Each of the servo patterns includes a servo frame, including first through fourth bursts, which are each independently modulated with multi-level pulse position modulation (PPM) to encode at least one independent bit per burst.
    Type: Application
    Filed: October 30, 2009
    Publication date: May 5, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Giovanni Cherubini, Jens Jelitto, Robert A. Hutchins, Mark A. Lantz