Patents Assigned to Sherwood Johnston
  • Patent number: 4222111
    Abstract: System and method for monitoring occupancy and status of restaurant tables to minimize the time each table is unoccupied. The system includes a processor unit coupled by means of serial data buses to a host unit and a plurality of service units. The host unit includes separate push buttons, or "table buttons", which correspond, respectively, to tables within a particular service area of the restaurant. The processor unit computes and stores the status of each table in the restaurant. The processor periodically computes and transmits display information representative of the updated status of the tables to the host unit and the service units. Such display information for a particular table is utilized at both the host station and the appropriate service station to illuminate or flash the table buttons in such a manner as to indicate the present status of the corresponding tables to restaurant personnel.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: September 9, 1980
    Assignee: Sherwood Johnston
    Inventors: John W. Sloan, Frank E. Bumb, Jr.