Patents by Inventor Joseph V. Bednar

Joseph V. Bednar 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: 5926111
    Abstract: A system for summoning a service industry worker using pulsed width modulation for remote signalling having a number of signalling switches, each connected to a transmitter. When a switch is activated, the corresponding transmitter transmits an RF carrier modulated by a lower frequency tone, turning the tone on and off in a pattern determined by a unique code assigned to the switch. A central receiver filters the signal from the transmitter and converts the tone pattern to a binary output to a computer. The computer instructs a display unit to turn on a light corresponding to the switch by sending its number in a serial bit stream of all lights that should be on. The bit stream is interpreted by circuits in the display unit using a clock signal. Upon the clock signal, the bit is sent to the appropriate register, which is used to turn on the correct light.
    Type: Grant
    Filed: October 16, 1995
    Date of Patent: July 20, 1999
    Assignee: D & B Supply, Inc.
    Inventors: Charles F. Davis, Joseph V. Bednar