Patents by Inventor Leopold Diouf

Leopold Diouf 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).

  • Internet protocol video delivery in passive optical networks
    Patent number: 7697547
    Abstract: Data representing video content is distributed over a passive optical network (PON) on virtual channels that are assigned to television (TV) channels as subscribers request the TV channels and de-assigned from TV channels when subscribers are no longer viewing them. Associating and de-associating TV channels with virtual channels can be performed with very low latency by using a near-physical layer protocol, such as the Physical Layer Operation Administration and Maintenance (PLOAM) protocol.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: April 13, 2010
    Assignee: Alcatel Lucent
    Inventors: Leopold Diouf, Tom Van Caenegem
  • Deriving passive optical network port identifiers
    Patent number: 7636354
    Abstract: A method in accordance with the present invention comprises identifying a M-bit multicast address and deriving a N-bit PON port identifier from the M-bit multicast address. Identifying the M-bit multicast address and deriving the N-bit PON port identifier are performed at an Optical Line Terminal (OLT) of a Passive Optical Network (PON). The N-bit PON port identifier has fewer bits than the M-bit multicast address. Deriving the N-bit PON port identifier includes mapping N?1 Least Significant Bits (LSB) of the M-bit multicast address to N?1 LSB of the N-bit PON port identifier and setting a 1 Most Significant Bit (MSB) of the N-bit PON port identifier to a bit setting that designates the N-bit PON port identifier as being a multicast port identifier.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: December 22, 2009
    Assignee: Alcatel Lucent
    Inventor: Leopold Diouf
  • Deriving passive optical network port identifiers
    Publication number: 20060126627
    Abstract: A method in accordance with the present invention comprises identifying a M-bit multicast address and deriving a N-bit PON port identifier from the M-bit multicast address. Identifying the M-bit multicast address and deriving the N-bit PON port identifier are performed at an Optical Line Terminal (OLT) of a Passive Optical Network (PON). The N-bit PON port identifier has fewer bits than the M-bit multicast address. Deriving the N-bit PON port identifier includes mapping N-1 Least Significant Bits (LSB) of the M-bit multicast address to N-1 LSB of the N-bit PON port identifier and setting a 1 Most Significant Bit (MSB) of the N-bit PON port identifier to a bit setting that designates the N-bit PON port identifier as being a multicast port identifier.
    Type: Application
    Filed: September 20, 2005
    Publication date: June 15, 2006
    Inventor: Leopold Diouf
  • Internet protocol video delivery in passive optical networks
    Publication number: 20060120723
    Abstract: Data representing video content is distributed over a passive optical network (PON) on virtual channels that are assigned to television (TV) channels as subscribers request the TV channels and de-assigned from TV channels when subscribers are no longer viewing them. Associating and de-associating TV channels with virtual channels can be performed with very low latency by using a near-physical layer protocol, such as the Physical Layer Operation Administration and Maintenance (PLOAM) protocol.
    Type: Application
    Filed: December 7, 2005
    Publication date: June 8, 2006
    Inventors: Leopold Diouf, Tom Van Caegegem