Patents Assigned to Logic Controls, Inc.
  • Patent number: 6272529
    Abstract: A distributed computer network is disclosed for use with a general purpose computer having a communications port and capable of running applications software for controlling the network. The distributed computer network includes a master controller having first and second communications ports, the first communications port of the master controller for operatively communicating with a general purpose computer. The distributed network further includes one or more input/output controllers, each having a first communications port for operatively communicating with the master controller and a second communications port for serially communicating with one or more peripheral devices. The peripheral devices are connected together in a serial daisy chain configuration. The master controller communicates with the input/output controllers via a multidrop RS-485 network bus.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: August 7, 2001
    Assignee: Logic Controls, Inc.
    Inventor: Jackson Lum
  • Patent number: 5895452
    Abstract: A point-of-sale system freely configurable with a plurality of peripheral input devices. The system includes a general purpose computer with an input port for receiving data. An electronic interface is coupled to the input port and readily connectable to the plurality of peripheral input devices for transmitting data from the plurality of peripheral input devices to the computer input port. The plurality of peripheral input devices can be selectively connected and disconnected from the electronic interface, the electronic interface maintaining a continuous dialogue with the computer during the connection and disconnection of the plurality of input devices.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: April 20, 1999
    Assignee: Logic Controls, Inc.
    Inventor: Jackson Lum
  • Patent number: D436355
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: January 16, 2001
    Assignee: Logic Controls, Inc.
    Inventors: Jackson Lum, Shang Qiang Wu