Patents by Inventor Nobuyuki Nagafuji

Nobuyuki Nagafuji 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: 8514945
    Abstract: An IP (Internet Protocol) stream transmitting/receiving system according to an exemplary aspect of the present invention is an IP stream transmitting/receiving system including an IP stream receiving device for performing, at a receiving processing timing of an IP stream, at least FEC (Forward Error Correction) decoding of a received IP stream, wherein the IP stream receiving device includes a circuit for generating the receiving processing timing based on TS (Transport Stream) synchronization that is established in TS time stamp reproducing processing at the latter stage of the FEC decoding processing.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: August 20, 2013
    Assignee: NEC Corporation
    Inventor: Nobuyuki Nagafuji
  • Patent number: 8315312
    Abstract: The invention provides an IP stream communicating system having a receiving apparatus which, when a reception IP (Internet Protocol) stream is inputted, performs at a reception processing timing at least FEC (Forward Error Correction) decoding processing that takes place immediately after reception of the reception IP stream, the IP stream receiving apparatus including: a PCR extracting circuit which extracts a PCR (Program Clock Reference) that has been periodically added into the reception IP stream; an RTP (Real-time Transport Protocol) information extracting circuit which extracts RTP information from an RTP header in the reception IP stream; and a sync calculating circuit which generates block sync of the FEC decoding processing based on PCR information extracted by the PCR extracting circuit and the RTP information extracted by the RTP information extracting circuit.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: November 20, 2012
    Assignee: NEC Corporation
    Inventor: Nobuyuki Nagafuji
  • Publication number: 20090225791
    Abstract: The invention provides an IP stream communicating system having a receiving apparatus which, when a reception IP (Internet Protocol) stream is inputted, performs at a reception processing timing at least FEC (Forward Error Correction) decoding processing that takes place immediately after reception of the reception IP stream, the IP stream receiving apparatus including: a PCR extracting circuit which extracts a PCR (Program Clock Reference) that has been periodically added into the reception IP stream; an RTP (Real-time Transport Protocol) information extracting circuit which extracts RTP information from an RTP header in the reception IP stream; and a sync calculating circuit which generates block sync of the FEC decoding processing based on PCR information extracted by the PCR extracting circuit and the RTP information extracted by the RTP information extracting circuit.
    Type: Application
    Filed: March 3, 2009
    Publication date: September 10, 2009
    Inventor: Nobuyuki Nagafuji
  • Publication number: 20080049846
    Abstract: An IP (Internet Protocol) stream transmitting/receiving system according to an exemplary aspect of the present invention is an IP stream transmitting/receiving system including an IP stream receiving device for performing, at a receiving processing timing of an IP stream, at least FEC (Forward Error Correction) decoding of a received IP stream, wherein the IP stream receiving device includes a circuit for generating the receiving processing timing based on TS (Transport Stream) synchronization that is established in TS time stamp reproducing processing at the latter stage of the FEC decoding processing.
    Type: Application
    Filed: July 31, 2007
    Publication date: February 28, 2008
    Applicant: NEC CORPORATION
    Inventor: Nobuyuki Nagafuji
  • Publication number: 20030215095
    Abstract: A time shift outputting method and a time shift outputting apparatus are disclosed by which temporarily stored contents are invalidated and disabled from further utilization after the temporary storage thereof.
    Type: Application
    Filed: May 14, 2003
    Publication date: November 20, 2003
    Applicant: NEC Corporation
    Inventor: Nobuyuki Nagafuji