Patents by Inventor Emmanuel Rossi

Emmanuel Rossi 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: 12159528
    Abstract: A method for determining and mitigating over-excursion of an internal mass of an electromechanical transducer may include measuring a sensed signal associated with the electromechanical transducer in response to a driving signal driven to the electromechanical transducer, determining a non-linearity value based on the sensed signal, mapping the non-linearity value to a probability of over-excursion of the internal mass, and applying a gain to a signal path configured to generate the driving signal based on the probability.
    Type: Grant
    Filed: December 14, 2022
    Date of Patent: December 3, 2024
    Assignee: Cirrus Logic Inc.
    Inventors: Marco A. Janko, Filippo Rossi, Hamid Sepehr, Kyle Wilkinson, Emmanuel A. Marchais, Vadim Konradi, Anil Lal, Aleksey S. Khenkin, Chin Huang Yong
  • Publication number: 20240238842
    Abstract: A method includes applying a high frequency signal to an electromechanical actuator and measuring a first response of the electromechanical actuator to the high frequency signal, estimating electrical parameters of the electromechanical actuator based on the first response, applying a low frequency broadband signal to the electromechanical actuator and measuring a second response of the electromechanical actuator to the low frequency broadband signal, and estimating mechanical parameters of the electromechanical actuator based on the second response and the estimated electrical parameters.
    Type: Application
    Filed: January 18, 2023
    Publication date: July 18, 2024
    Inventors: Marco Janko, Jorge Reynaga, Chin Yong, Eric Lindemann, Emmanuel Marchais, Hamid Sepehr, Vadim Konradi, Michael Kurek, Filippo Rossi, Anil Lal, Aleksey Khenkin
  • Patent number: 7016105
    Abstract: A method of automatic gain control for use in an optical amplification device comprising a variable optical attenuator and an optical amplifier connected downstream of the optical attenuator includes the steps of measuring the power at the input of the amplification device, determining the number of channels at the input of the amplification device as a function of the measured power knowing the attenuation value of a span upstream of the device, and modifying the gain of the amplifier as a function of the number of channels determined in this way.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: March 21, 2006
    Assignee: Alcatel
    Inventors: Guy Balland, Alice Michaud, Emmanuel Rossi, Frank Bruyere, Jacques Pochet, Christophe Trouiller
  • Publication number: 20050128939
    Abstract: The invention relates to a method of providing protected transmission between two nodes (1, 2) of a wavelength-division multiplexed network. The invention proposes to have loss of signal over the main line (3) detected by a node, and then to interrupt transmission of data over the main line by said node. By interrupting transmission, it is thus possible to force loss of signal on the other node: the other node then switches its transmission of protected data over to the backup line (4). Interrupting the transmission of data can be achieved by switching off the laser of said node. The invention also describes a method of testing with a view to re-using the main line (3). The invention provides means for switching the protected data over to the backup path that are particularly simple in terms of protocol.
    Type: Application
    Filed: April 29, 2003
    Publication date: June 16, 2005
    Inventors: Stephane Lovisa, Francesco Schiavoni, Guy Balland, Emmanuel Rossi
  • Patent number: 6891607
    Abstract: An optical device that measures and dynamically compensates power loss variations in an optical fiber based on supervisory signals. An injector injects supervisory signals having a predefined optical power downstream of the fiber entry end and a detector extracts the supervisory signals at the exit end of the fiber to detect their optical power. Based on the detected optical power and the predefined optical power, the optical power loss of the supervisory signals in the fiber is determined. The optical power loss and the nominal power loss in the fiber are compared to determine a variation in the power loss in the optical fiber. A controller coupled to the detector and to the exit end of the fiber modifies the power of primary signals delivered by the exit end of the fiber as a function of the detected variation in power loss.
    Type: Grant
    Filed: April 7, 2003
    Date of Patent: May 10, 2005
    Assignee: Alcatel
    Inventors: Arnaud Bisson, Alice Michaud, Emmanuel Rossi, Guy Balland
  • Publication number: 20050041969
    Abstract: An optical system is dedicated to dynamically measuring power loss in an optical fiber (FO) having a first end (E1) and a second end (E2) respectively adapted to receive and to send primary optical signals. The system comprises injection means (3) adapted to inject supervisory signals into the second end (E2) of the optical fiber (FO) at a selected optical power and detection means (5) adapted to extract the supervisory signals at the first end (E1) of the optical fiber (FO) in order to determine their optical power and to deduce therefrom and from the selected optical power primary information representative of the optical power loss of the supervisory signals in the optical fiber (FO), and where applicable to compare the primary information to a value representative of a nominal power loss in the optical fiber (FO) in order to supply secondary information representative of a variation of the power loss in the optical fiber.
    Type: Application
    Filed: August 17, 2004
    Publication date: February 24, 2005
    Inventors: Arnaud Bisson, Emmanuel Rossi, Guy Balland
  • Patent number: 6850319
    Abstract: An optical system dynamically measures power loss in an optical fiber (2) having an entry end (E) adapted to receive optical signals and an exit end (S) adapted to deliver the signals. The system comprises modulation means (4) upstream from the entry end (E) and adapted to modulate the amplitude of the optical signals with a low-frequency modulation signal having a modulation index inversely proportional to the input power (Pe) of the optical signals, and detection means (7) downstream from the exit end (S) and adapted to extract from the modulated optical signals primary information representative of the output amplitude of the modulation signal and to deduce from the primary information secondary information representative of a variation in the power loss in the fiber.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: February 1, 2005
    Assignee: Alcatel
    Inventors: Arnaud Bisson, Alice Michaud, Emmanuel Rossi, Guy Balland
  • Publication number: 20040146302
    Abstract: It is described a WDM optical communication method based on the use of a plurality of wavelength specific channels defining a spectrum for the transmission of optical signals through an optical communication network. These optical signals will be coupled at a sender side into a common optical fiber of said network, to be amplified by optical amplifiers along said network. The power of optical signals per channel will be tuned at said sender side to build an uniform—flat—spectrum throughout said optical communication network.
    Type: Application
    Filed: July 28, 2003
    Publication date: July 29, 2004
    Applicant: ALCATEL
    Inventors: Guy Balland, Alice Michaud, Emmanuel Rossi
  • Publication number: 20040027651
    Abstract: A method of automatic gain control for use in an optical amplification device comprising a variable optical attenuator and an optical amplifier connected downstream of the optical attenuator includes the steps of measuring the power at the input of the amplification device, determining the number of channels at the input of the amplification device as a function of the measured power knowing the attenuation value of a span upstream of the device, and modifying the gain of the amplifier as a function of the number of channels determined in this way.
    Type: Application
    Filed: August 8, 2003
    Publication date: February 12, 2004
    Applicant: ALCATEL
    Inventors: Guy Balland, Alice Michaud, Emmanuel Rossi, Frank Bruyere, Jacques Pochet, Christophe Trouiller
  • Publication number: 20030189699
    Abstract: An optical system dynamically measures power loss in an optical fiber (2) having an entry end (E) adapted to receive optical signals and an exit end (S) adapted to deliver the signals. The system comprises modulation means (4) upstream from the entry end (E) and adapted to modulate the amplitude of the optical signals with a low-frequency modulation signal having a modulation index inversely proportional to the input power (Pe) of the optical signals, and detection means (7) downstream from the exit end (S) and adapted to extract from the modulated optical signals primary information representative of the output amplitude of the modulation signal and to deduce from the primary information secondary information representative of a variation in the power loss in the fiber.
    Type: Application
    Filed: April 4, 2003
    Publication date: October 9, 2003
    Applicant: ALCATEL
    Inventors: Arnaud Bisson, Alice Michaud, Emmanuel Rossi, Guy Balland
  • Publication number: 20030189700
    Abstract: The optical device is for measuring and dynamically compensating power loss variations in an optical fiber (2). It includes injector means (4) adapted to inject supervisory signals having a chosen optical power downstream of the fiber entry end (E) and detector means (5) adapted to extract the supervisory signals at the exit end (S) of the fiber (2), to determine their optical power, to deduce therefrom and from said chosen optical power primary information representative of the optical power loss of the supervisory signals in the fiber, and to compare said primary information and a value representative of a nominal power loss in the fiber to deliver secondary information representative of a variation in the power loss in the optical fiber (2). Control means (11) coupled to the detector means (5) and to the exit end (S) of the fiber (2) modify the power of the primary signals delivered by the exit end of the fiber (2) as a function of the detected variation in power loss.
    Type: Application
    Filed: April 7, 2003
    Publication date: October 9, 2003
    Applicant: ALCATEL
    Inventors: Arnaud Bisson, Alice Michaud, Emmanuel Rossi, Guy Balland