Patents by Inventor Xavier Marchal

Xavier Marchal 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).

  • Transform calculation device
    Patent number: 7552159
    Abstract: The present invention relates to a discrete transform calculation device (FFTP). The device has control means (CNTRL) which configure first and second memories (RAM1 and RAM2) according to the number of transforms used during a first processing. The device applies in particular to a demodulator which allows management of several Fourier transforms in parallel.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: June 23, 2009
    Assignee: NXP B.V.
    Inventors: Olivier Gay-Bellile, Xavier Marchal
  • Digital demodulator for terrestrial receiver
    Patent number: 7145965
    Abstract: A method and a demodulator for processing a Fast Fourier Transform using data blocks include a Fast Fourier Transform (FFT) coprocessor and a digital signal processor (DSP). The FFT coprocessor includes a start function and a computation function (F_FFT). The start function is adapted to generate a start signal each time a first data of a new block is received. The DSP includes a time error function which indicates to the start function for how much data it has to wait before a new start signal is generated.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: December 5, 2006
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Olivier Gay-Bellile, Xavier Marchal
  • Multi-standard channel decoder
    Patent number: 6862325
    Abstract: The invention relates to a multi-standard digital receiver, in a digital video transmission system. It comprises a channel decoder for protecting a transmitted signal against channel transmission errors, the channel decoder comprising: a set of co-processors including at least 3 clusters of programmable co-processors for executing the functions of a digital front-end block (DFE), a channel correction block (CHN) and a forward error correction block (FEC), respectively, a general purpose processor (DSP) for managing control, synchronization and configuration of the channel decoder, and a memory (SM) shared between the clusters and the general purpose processor.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: March 1, 2005
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Olivier Gay-Bellile, Xavier Marchal, Geoffrey Francis Burns, Krishnamurthy Vaidyanathan
  • Transform calculation device
    Publication number: 20040111458
    Abstract: The present invention relates to a discrete transform calculation device (FFTP). The device has control means (CNTRL) which configure first and second memories (RAM1 and RAM2) according to the number of transforms used during a first processing. The device applies in particular to a demodulator which allows management of several Fourier transforms in parallel.
    Type: Application
    Filed: October 7, 2003
    Publication date: June 10, 2004
    Inventors: Olivier Gay-Bellile, Xavier Marchal
  • Digital demodulator for terrestrial receiver
    Publication number: 20030021361
    Abstract: The present invention relates to a method and a demodulator for processing a Fast Fourier Transform using data blocks. The invention is characterized in that it comprises a Fast Fourier Transform coprocessor (FFT_P) and a digital signal processor (DSP). Said coprocessor (FFT_P) comprises a start function (F_STRT) and a computation function (F_FFT). Said start function (F_STRT) is adapted to send to said computation function (F_FFT) a start signal (S_STRT) each time a first data (D) of a new block is received. Said digital signal processor (DSP) comprises a time error function (F_TMERR), which indicates to the start function (F_STRT) for how much data it has to wait before a new start signal (S_STRT) is sent.
    Type: Application
    Filed: July 15, 2002
    Publication date: January 30, 2003
    Inventors: Olivier Gay-Bellile, Xavier Marchal
  • Multi-standard channel decoder
    Publication number: 20020070796
    Abstract: The invention relates to a multi-standard digital receiver, in a digital video transmission system.
    Type: Application
    Filed: October 17, 2001
    Publication date: June 13, 2002
    Inventors: Olivier Gay-Bellile, Xavier Marchal, Geoffrey Francis Burns, Krishnamurthy Vaidyanathan