Patents by Inventor Martin Melendez

Martin Melendez 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).

  • System for selectively coupling trackball and mouse through a switch where input device provides coded signal to disable trackball while permitting signals from mouse
    Patent number: 5669015
    Abstract: A trackball enable/disable system is disclosed for use in a personal computer to permit selective activation and deactivation of a trackball or mouse device. The system includes a keyboard controller that detects the selection of a hot key (or combination of keys) by the operator, and in response either enables or disables the trackball. In one embodiment, the controller includes an associated flag, and sets or reset a the flag in response to hot key selection. Signals from the trackball are received by the keyboard controller and assembled in preparation for transmission to the CPU. Before the trackball data is transmitted to the CPU, the status of the flag is checked to determine if the trackball is enabled or disabled. If disabled, the trackball data is not sent to the CPU. In an alternative embodiment, a pair of switches are provided between the trackball and the controller.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: September 16, 1997
    Assignee: Dell USA L.P.
    Inventors: Philip D. Chidester, Martin Melendez