Patents by Inventor Tahar Takhedmit

Tahar Takhedmit 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: 4549291
    Abstract: A hybrid local communication network operates both in circuit and packet modes with a loop carrying a TDM multiplex for interconnecting a number of terminals connected to the loop. The communications in a packet mode are controlled by a token. The header of each packet comprises the address of the called station and the address of the calling station. The TDM multiplex is arranged in multiframes comprising N frames O-(N-1). Each frame comprises P byte time slots iTO-iT(P-1) for transmitting a packet per frame. The byte time slot iTO in each frame contains the frame alignment pattern of the frame, the byte time slot iT1 contains the frame packet token byte, the byte time slots iT2-iTh contain the packet header, the byte time slots iT(h+1)-iTx contain the useful data of the packet, and the byte time slot iT(x+1)-iT (P-1) contain circuit type communication data. The service and supervision messages between any of the units, on one hand, and the loop control unit, on the other hand, are exchanged in packet mode.
    Type: Grant
    Filed: September 9, 1983
    Date of Patent: October 22, 1985
    Inventors: Roger J. Renoulin, Jean P. Lefranc, Tahar Takhedmit