Patents by Inventor Frederic Lambert

Frederic Lambert 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: 5192997
    Abstract: A method for automatically identifying the PAL or NTSC color TV standard comprises the following steps: providing a first demodulation signal (IC1) with the regenerated 90.degree.-phased sub-carrier; providing a second demodulation signal at the reference frequency of one of the colors (FOR) of the SECAM standard; providing a first voltage (VC1) by integrating the first demodulation signal (IC1), and providing a first associated logic criterion (C1), simultaneously applying the first signal (IC1) at the input of an inverter switched according to the rate of a non-half line-frequency phased signal (FL/2), providing a second voltage (VC2) by integrating the output signal (ICC) of the inverter (31), and providing a second associated logic criterion (C2); similarly providing, but from the second demodulation signal (IC2), the first logic criterion (C1) and the second logic criterion (C2); and identifying the standard received as a function of the state of the first and second logic criteria (C1 and C2).
    Type: Grant
    Filed: February 5, 1991
    Date of Patent: March 9, 1993
    Assignee: SGS-Thomson Microelectronics S.A.
    Inventors: Michel Imbert, Frederic Lambert