Patents by Inventor Benjamin U. Stewart

Benjamin U. Stewart 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: 4777857
    Abstract: Described is a digital electronic device which selectively intercepts and reroutes the serial data being transmitted between digital music instruments interacting via the MIDI signal standard. Simultaneously, the device performs either transposition or control increment operations by incrementing (or decrementing) only those data bytes which are MIDI addresses of either musical keys or selected controls, (e.g., controls pertaining to volume, pitch bend, tremolo, tone duration, and the like) respectively. The device when equipped with logic gates can operate even faster than a microprocessor-based device performing the same functions, and no programming is required. In fact, a preferred device of the invention built with logic gates and other components available now is capable of operating at 250 kilobaud which is 8 times as fast as the present MIDI baud rate.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: October 18, 1988
    Inventor: Benjamin U. Stewart