Patents by Inventor Lionel Heitz

Lionel Heitz 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).

  • Error control apparatus using restore memory for recovering from parity discordances in transmissions between controller and real-time I/O devices
    Patent number: 4864531
    Abstract: An input/output device monitors the transmission of information between a processor of a programmable controller and sensors and actuators of a process to be controlled. This device includes electronic circuits adapted for calculating the parities of the digital words which pass therethrough, these parities being compared with corresponding parities calculated by the processor which thereafter invalidates the words having two different parities.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: September 5, 1989
    Assignee: La Telemecanique Electrique
    Inventors: Jesse T. Quatse, Lionel Heitz, Jacky Pergent, Olivier Penot
  • Method and apparatus for protecting and monitoring the transmission of information between the central unit of a programmable controller and the sensors and/or the actuators of the controlled process
    Patent number: 4774656
    Abstract: An input/output device is used for a programmable controller having on input/output cards a plurality of electronic channels forming the logic interfaces between the connection bus with the central unit and the sensors or the actuators connected to the controllers; this device further uses electronic circuits for monitoring the good transmission of input/output signals by the adaptation interfaces providing for the galvanic isolation of the bus with respect to the sensors and actuators of the controlled automatism.
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: September 27, 1988
    Assignee: La Telemecanique Electrique
    Inventors: Jesse T. Quatse, Lionel Heitz, Jacky Pergent, Olivier Penot