Patents by Inventor Thomas J. Hahn

Thomas J. Hahn 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: 5561806
    Abstract: An apparatus for facilitating the transfer of data between computers of different types and architectures is disclosed. The Serial Channel Adapter (SCA) includes four primary functional components: 1) low-end parallel bus interface; 2) data staging buffer; 3) serial interface; and 4) adapter controller, all of which are under microprocessor control and fully programmable to achieve maximum flexibility. Two buses are provided, a Local Data Bus and Local Processor Bus, to minimize processor overhead on the data bus and maximize data throughput.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: October 1, 1996
    Assignee: International Business Machines Corporation
    Inventors: John A. Fitchett, Thomas J. Hahn, Gary L. Rouse
  • Patent number: 4337400
    Abstract: An automatic headlight control system for utilization in conjunction with the ignition system and the windshield wiper system of an automobile is disclosed. The control system utilizes a single switching relay to automatically control the operation of the automobile's headlights when the ignition system and windshield wipers are concurrently activated.When the automobile ignition is activated, i.e., in the on or running position, the activation of the windshield wiper switch causes the switching relay to be energized thereby automatically activating the headlights; the de-activation of the windshield wiper switch causes the switching relay to be deenergized thereby automatically inactivating the headlights. Turning the ignition switch to the off position causes both the headlights and windshield wipers to be turned off automatically.
    Type: Grant
    Filed: July 16, 1980
    Date of Patent: June 29, 1982
    Inventor: Thomas J. Hahn