Patents by Inventor Jeans-Yves L. Lejard

Jeans-Yves L. Lejard 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: 4935813
    Abstract: A system for use with D2-MAC/ packets contains, on the one hand, a transmitting part formed by a pick-up member (1) for producing said pictures constituted by a plurality of picture elements or samples distributed over even and odd lines, a filter member (22) for filtering the samples of the filtered samples, a sub-sampling member (20) for taking certain samples from the output of the filter member and a transmission circuit (5) for transmitting through the channel the certain samples taken and, on the other hand, at least one receving part constituted by a receiving circuit (10), an interpolation member (41) for recovering samples on the basis of the certain samples received, and a first display circuit (50) for the recovery of a high-definition picture; the sub-sampling member (20) is designed to take from the pictures supplied by the pick-up member a predetermined number of samples in three consecutive fields.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: June 19, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Frederic L. J. Fonsalas, Jean-Yves L. Lejard, Pascal F. P. Hayet, Marcel R. Le Queau
  • Patent number: 4922342
    Abstract: A transmission system for TV transmission in the D2 MAC/packet mode includes a transmission part formed by an arrangement (1) for supplying pictures constituted by a plurality of picture elements or samples distributed over even and odd lines, a filter member (22) for filtering the samples of the filtered samples, a sub-sampling circuit (20) for taking certain samples from the output of the filter member, and the output of a transmitter circuit (5) for transmitting through the channel the samples taken, and also includes at least one receiving part constituted by a receiving circuit (10) for receiving the samples taken, an interpolation member (41) for recovering samples from the samples received and a first display circuit (50) for converting the recovered and received samples into a high-definition restituted picture.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: May 1, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Frederic L. J. Fonsalas, Jeans-Yves L. Lejard, Pascal F. P. Hayet, Marcel R. Le Queau