Patents by Inventor Allan Hodkinson

Allan Hodkinson 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).

  • Apparatus and method for use in transferring information relative to a storage medium
    Patent number: 7623309
    Abstract: Plural information transfer elements transfer signals from plural magnetic tape tracks of plural tapes. Each element and track has a different non-linear transfer function. A processor (1) determines appropriate compensation for the signal one of the transfer elements derives, (2) accesses stored information for compensation characteristics of each of the data transfer elements, and (3) references the accessed information with the compensation determined for the one element to establish an appropriate compensation for the other elements.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: November 24, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Allan Hodkinson
  • Drop-out management system and method
    Patent number: 7039835
    Abstract: Drop-outs in a data read channel having one or more controllable elements are managed. A data read channel derives a signal having at least one drop-out characterising parameter from which data are to be recovered. The signal from the data read channel is tapped and compared with at least one drop-out characterising parameter of the tapped signal with two or more thresholds to categorise the drop-out. One or more elements of the data read channel is controlled in response to the category of the drop-out.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: May 2, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Allan Hodkinson, Rafel Jibry
  • Apparatus and method for use in transferring information relative to a storage medium
    Publication number: 20050041315
    Abstract: Plural information transfer elements transfer signals from plural magnetic tape tracks of plural tapes. Each element and track has a different non-linear transfer function. A processor (1) determines appropriate compensation for the signal one of the transfer elements derives, (2) accesses stored information for compensation characteristics of each of the data transfer elements, and (3) references the accessed information with the compensation determined for the one element to establish an appropriate compensation for the other elements.
    Type: Application
    Filed: April 28, 2004
    Publication date: February 24, 2005
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventor: Allan Hodkinson
  • Data storage cartridge with sensor
    Publication number: 20030067703
    Abstract: There is disclosed a medium cartridge comprising: a casing; a data storage medium for storing data; and at least one shock sensor for sensing a shock condition experienced by said medium cartridge.
    Type: Application
    Filed: September 23, 2002
    Publication date: April 10, 2003
    Inventors: Stephen Anthony Holmes, Christopher Huw Williams, Allan Hodkinson
  • Drop-out management system and method
    Publication number: 20030039048
    Abstract: Drop-outs in a data read channel having one or more controllable elements are managed. A data read channel derives a signal having at least one drop-out characterising parameter from which data are to be recovered. The signal from the data read channel is tapped and compared with at least one drop-out characterising parameter of the tapped signal with two or more thresholds to categorise the drop-out. One or more elements of the data read channel is controlled in response to the category of the drop-out.
    Type: Application
    Filed: July 3, 2002
    Publication date: February 27, 2003
    Inventors: Allan Hodkinson, Rafel Jibry