Patents by Inventor Samuel Rousselin

Samuel Rousselin 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: 10248135
    Abstract: A stepper motor is driven according to step driving modes including a full-step driving mode, a half-step driving mode and micro-stepping modes. The stepper motor may also be driven in an acceleration phase. A method of controlling the stepper motor includes controlling the current step driving mode of the motor by a processing unit. During the acceleration phase of the stepper motor and the stepper motor being in driven in a current step driving mode other than the full-step driving mode, the processing unit tests, after each speed increase, if a remaining computing power of the processing unit is sufficient for control of the stepper motor to remain in the current step driving mode, and if not the processing unit, in presence of a first switching condition, switches control of the stepper motor to the driving mode having the closest coarser step.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: April 2, 2019
    Assignee: STMicroelectronics (Grand Ouest) SAS
    Inventors: Emmanuel Langouet, Samuel Rousselin
  • Publication number: 20180129227
    Abstract: A stepper motor is driven according to step driving modes including a full-step driving mode, a half-step driving mode and micro-stepping modes. The stepper motor may also be driven in an acceleration phase. A method of controlling the stepper motor includes controlling the current step driving mode of the motor by a processing unit. During the acceleration phase of the stepper motor and the stepper motor being in driven in a current step driving mode other than the full-step driving mode, the processing unit tests, after each speed increase, if a remaining computing power of the processing unit is sufficient for control of the stepper motor to remain in the current step driving mode, and if not the processing unit, in presence of a first switching condition, switches control of the stepper motor to the driving mode having the closest coarser step.
    Type: Application
    Filed: May 30, 2017
    Publication date: May 10, 2018
    Inventors: Emmanuel Langouet, Samuel Rousselin
  • Patent number: 9439224
    Abstract: A mobile telephony radiocommunication management process, with first time slots and second time slots being provided independently of each other, said process comprising the default selection of first time slots for transmitting/receiving first bursts corresponding to these first time slots, and in the case of a first time slot at least partially overlapping with a second time slot, choosing the first time slot or the second time slot, for respectively transmitting/receiving the first burst corresponding to the first time slot or receiving the second burst corresponding to the second time slot, with this choice being made so as to minimize the number of second bursts received for a given result.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: September 6, 2016
    Assignee: ST-ERICSSON SA
    Inventors: Didier Harnay, Stephane Pineau, Samuel Rousselin
  • Patent number: 9008054
    Abstract: A resource management unit for a mobile telephone terminal, with the terminal comprising radio transmission/reception means for transmitting and receiving radio frequency signals corresponding to bursts of symbols during allocated time slots, and a device able to operate in a first mode and in a second mode, said device interfering less with the transmission/reception of radio frequency signals when it is in the first mode than when it is in the second mode. The resource management unit is able to cause the device to change from one of the first and second modes to the other of the first and second modes during the same time slot.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: April 14, 2015
    Assignee: Ericsson Modems SA
    Inventors: Samuel Rousselin, Yann Le Gal
  • Publication number: 20140036891
    Abstract: A resource management unit for a mobile telephone terminal, with the terminal comprising radio transmission/reception means for transmitting and receiving radio frequency signals corresponding to bursts of symbols during allocated time slots, and a device able to operate in a first mode and in a second mode, said device interfering less with the transmission/reception of radio frequency signals when it is in the first mode than when it is in the second mode. The resource management unit is able to cause the device to change from one of the first and second modes to the other of the first and second modes during the same time slot.
    Type: Application
    Filed: October 11, 2013
    Publication date: February 6, 2014
    Applicant: ST-Ericsson SA
    Inventors: Samuel Rousselin, Yann Le Gal
  • Patent number: 8583130
    Abstract: A resource management unit for a mobile telephone terminal, with the terminal comprising radio transmission/reception means for transmitting and receiving radio frequency signals corresponding to bursts of symbols during allocated time slots, and a device able to operate in a first mode and in a second mode, said device interfering less with the transmission/reception of radio frequency signals when it is in the first mode than when it is in the second mode. The resource management unit is able to cause the device to change from one of the first and second modes to the other of the first and second modes during the same time slot.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: November 12, 2013
    Assignee: ST-Ericsson SA
    Inventors: Samuel Rousselin, Yann Le Gal
  • Publication number: 20120115495
    Abstract: A resource management unit for a mobile telephone terminal, with the terminal comprising radio transmission/reception means for transmitting and receiving radio frequency signals corresponding to bursts of symbols during allocated time slots, and a device able to operate in a first mode and in a second mode, said device interfering less with the transmission/reception of radio frequency signals when it is in the first mode than when it is in the second mode. The resource management unit is able to cause the device to change from one of the first and second modes to the other of the first and second modes during the same time slot.
    Type: Application
    Filed: June 2, 2010
    Publication date: May 10, 2012
    Inventors: Samuel Rousselin, Yann Le Gal
  • Publication number: 20120082143
    Abstract: A mobile telephony radiocommunication management process, with first time slots and second time slots being provided independently of each other, said process comprising the default selection of first time slots for transmitting/receiving first bursts corresponding to these first time slots, and in the case of a first time slot at least partially overlapping with a second time slot, choosing the first time slot or the second time slot, for respectively transmitting/receiving the first burst corresponding to the first time slot or receiving the second burst corresponding to the second time slot, with this choice being made so as to minimize the number of second bursts received for a given result.
    Type: Application
    Filed: May 27, 2010
    Publication date: April 5, 2012
    Applicant: ST-ERICSSON SA
    Inventors: Didier Harnay, Stéphane Pineau, Samuel Rousselin
  • Patent number: 8054918
    Abstract: A wireless communication system is provided that detects a frequency burst (FB) through analysis of the autocorrelation function of received signals. The system can accommodate the relatively large frequency offsets that are associated with less expensive reference frequency crystals. The system employs a multi-mode filter including an FB filter and a channelization filter. In one embodiment, the FB filter is employed until an FB is located and then, once the FB is located, the channelization filter is employed to receive signals.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: November 8, 2011
    Assignee: St-Ericsson S.A.
    Inventors: Marvin L. Vis, Jing Liang, Richard T. Behrens, Samuel Rousselin
  • Patent number: 7424070
    Abstract: In order to evaluate the noise related to data issuing from a turbo-encoder, estimates of the noise related to its systematic output, to the data issuing from its first elementary encoder, and to the data issuing from its second elementary encoder are determined. At least two of the estimates of the noise related to the systematic output, to the data issuing from the first encoder, and to the data issuing from the second encoder, are added. The results of these additions are divided by the number of augends added, and then inverted, so as to obtain a noise factor, and the noise factor is multiplied with the data issuing from at least one of the first encoder, second encoder, and systematic output.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: September 9, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Philippe A. Le Bars, Frederique Ehrmann, Francois Thoumy, Lionel Le Scolan, Samuel Rousselin
  • Patent number: 7039120
    Abstract: The method of transmitting data in the form of symbols sent over an electromagnetic channel is characterized in that a measurement of significance is attributed to each group of data to be transmitted, in that the transmission reliability of the carriers is estimated dynamically, and in that the most significant data are sent over the most reliable carriers at each instant, the other data being sent over the carriers of decreasing reliability, in decreasing order of significance of the data.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: May 2, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: François Thoumy, Philippe Le Bars, Samuel Rousselin, Lionel Le Scolan, Frédérique Ehrmann
  • Publication number: 20060067437
    Abstract: A wireless communication system is provided that detects a frequency burst (FB) through analysis of the autocorrelation function of received signals. The system can accommodate the relatively large frequency offsets that are associated with less expensive reference frequency crystals. The system employs a multi-mode filter including an FB filter and a channelization filter. In one embodiment, the FB filter is employed until an FB is located and then, once the FB is located, the channelization filter is employed to receive signals.
    Type: Application
    Filed: September 30, 2004
    Publication date: March 30, 2006
    Applicant: Silicon Laboratories Inc.
    Inventors: Marvin Vis, Jing Liang, Richard Behrens, Samuel Rousselin
  • Patent number: 6954471
    Abstract: The present invention concerns a method and an apparatus of generating a reference event in a receiving node receiving frames of information, when a frame of information is received, the method and the apparatus sample the frame of information in order to form sampled data, process sampled data in order to detect among said sampled data a specific data, monitor the number of processed sampled data until the detection of a specific data and generate a reference event according to the result of processing and monitoring.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: October 11, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Samuel Rousselin, Philippe Le Bars, Lionel Le Scolan, François Thoumy, Frédérique Ehrmann, Mohamed Braneci, Patrice Nezou, Pascal Rousseau
  • Publication number: 20050185735
    Abstract: In order to evaluate the noise related to data issuing from a turbo-encoder: estimates of the noise related to its systematic output, to the data issuing from its first elementary encoder and to the data issuing from its second elementary encoder are determined (70); at least two of the estimates of the noise related to the systematic output, to the data issuing from the first encoder, and to the data issuing from the second encoder, are added (72); the results of these additions are divided (74) by the number of augends added, and then inverted (76), so as to obtain a noise factor; and the noise factor is multiplied with the data issuing from at least one of the first encoder, second encoder and systematic output.
    Type: Application
    Filed: April 28, 2005
    Publication date: August 25, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Philippe Le Bars, Frederique Ehrmann, Francois Thoumy, Lionel Scolan, Samuel Rousselin
  • Patent number: 6898251
    Abstract: In order to evaluate the noise related to data issuing from a turbo-encoder, estimates of the noise related to its systematic output, to the data issuing from its first elementary encoder, and to the data issuing from its second elementary encoder are determined. At least two of the estimates of the noise related to the systematic output, to the data issuing from the first encoder, and to the data issuing from the second encoder, are added. The results of these additions are divided by the number of augends added, and then inverted, so as to obtain a noise factor, and the noise factor is multiplied with the data issuing from at least one of the first encoder, second encoder, and systematic output.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: May 24, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Philippe Le Bars, Frederique Ehrmann, Francois Thoumy, Lionel Le Scolan, Samuel Rousselin
  • Patent number: 6408167
    Abstract: A radio device includes a receiving part (45) formed by a high-frequency selective amplifier stage (50) including a frequency selective circuit (51) having a plurality of capacitive elements (68-78), any one or more which can be selectively connected into the selective circuit in dependence on a control magnitude stored in a storage element (90) in order to tune the selective circuit to a certain frequency. Under the control of a microprocessor (92) the stored control magnitude is set to that which gives the best level measured by a level detector (98) at the output of the amplifier stage. The microprocessor varies the control magnitude to produce a series of alternate connections into the selective circuit of each and every combination of one or more of the reactive elements, receives the measurement by the level detector of the level at the output of the amplifier stage or each control magnitude, and selects the control magnitude giving the best level.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: June 18, 2002
    Assignee: Koninklijke Philips Electronisc N.V.
    Inventors: Samuel Rousselin, Luigi DiCapua
  • Publication number: 20020041640
    Abstract: In order to evaluate the noise related to data issuing from a turbo encoder: estimates of the noise related to its systematic output, to the data issuing from its first elementary encoder and to the data issuing from its second elementary encoder are determined (70); at least two of the estimates of the noise related to the systematic output, to the data issuing from the first encoder, and to the data issuing from the second encoder, are added (72); the results of these additions are divided (74) by the number of augends added, and then inverted (76), so as to obtain a noise factor; and the noise factor is multiplied with the data issuing from at least one of the first encoder, second encoder and systematic output.
    Type: Application
    Filed: March 14, 2001
    Publication date: April 11, 2002
    Inventors: Philippe Le Bars, Frederique Ehrmann, Francois Thoumy, Lionel Le Scolan, Samuel Rousselin
  • Patent number: 5936474
    Abstract: An electronic device is disclosed having an oscillation circuit included in a phase-locked loop. The phase-locked loop includes a phase detector and a variable divider having a selected dividing ratio. A control circuit is provided which melts a fuse as a function of the magnitude of the output of the phase detector for each dividing ratio of the divider, indicating a bad or good locking of the loop.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: August 10, 1999
    Assignee: U.S. Philips Corporation
    Inventor: Samuel Rousselin