Patents by Inventor James E. Rohen

James E. Rohen 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).

  • Virtual graphics display capable of presenting icons and windows to the blind computer user and method
    Patent number: 5186629
    Abstract: The disclosure teaches a computer mouse having tactile feedback to be used with audio computer output to provide a virtual graphic display to blind computer users. The mouse and audio feedback allow blind computer users to visualize computer graphic images and multiple screen windows in much the same way as these forms of computer output are visualized by persons with sight.
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: February 16, 1993
    Assignee: International Business Machines Corporation
    Inventor: James E. Rohen
  • Electronic velocity measurement especially for self-clocking write head
    Patent number: 4394621
    Abstract: A time base signal for controlling the recording of binary data is developed by measuring the velocity of a magnetic record.The velocity is measured by providing an inductive read head and a magnetoresistive read head which sense the same flux field on the magnetic record. The difference in the outputs of these read heads is a measure of the record velocity.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: July 19, 1983
    Assignee: International Business Machines Corporation
    Inventor: James E. Rohen
  • Scannable readout device
    Patent number: 4354100
    Abstract: An array of individually controllable conductors presents variable data as a magnetic flux pattern that can be scanned by equipment presently used to scan prerecorded magnetic strips.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: October 12, 1982
    Assignee: International Business Machines Corporation
    Inventor: James E. Rohen