Patents by Inventor David Chamla

David Chamla 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: 7511570
    Abstract: A transconductance filtering device with a flexible architecture that can selectively present a different topology and/or order beginning with the same initial structure is disclosed. For example, depending on the communications standard detected, the elementary cells of the filtering circuit required to form the adapted filter are selected and connected in such a manner as to obtain the configuration desired for the filtering means. As an example, the filter may be for use with a wireless communications system forming, in particular, a cellular mobile telephone. The filter is configurable by means of at least two elementary cells of the same structure and of controllable interconnection means each having an open or closed state.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: March 31, 2009
    Assignees: STMicroelectronics SA, Centre National de la Recherche Scientifique (CNRS)
    Inventors: David Chamla, Andreia Cathelin, Andreas Kaiser
  • Patent number: 7436260
    Abstract: An electronic device where the ratio between two amplification factors of two amplifiers, called main amplifiers, is adjusted using a control means. The control means constantly equalizes the output signals of the two main amplifiers by adapting one of the control signals. The output signals are acted on in order to adjust the control signals. Owing to the fact that the input signals are in a ratio N, this same ratio is obtained between the amplification factors of the two main amplifiers. The two main control signals, used to control the main amplifiers, are employed for controlling any other amplification factor of at least two other amplifiers or groups of amplifiers, so as to establish a ratio N between these other amplification factors. The main circuit thus allows N to be applied and regulated between the amplification factors of other amplifiers.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: October 14, 2008
    Assignee: STMicroelectronics SA
    Inventors: David Chamla, Andreia Cathelin, Andreas Kaiser
  • Publication number: 20070194854
    Abstract: A transconductance filtering device with a flexible architecture that can selectively present a different topology and/or order beginning with the same initial structure is disclosed. For example, depending on the communications standard detected, the elementary cells of the filtering circuit required to form the adapted filter are selected and connected in such a manner as to obtain the configuration desired for the filtering means. As an example, the filter may be for use with a wireless communications system forming, in particular, a cellular mobile telephone. The filter is configurable by means of at least two elementary cells of the same structure and of controllable interconnection means each having an open or closed state.
    Type: Application
    Filed: December 29, 2006
    Publication date: August 23, 2007
    Applicants: STMicroelectronics SA, Centre National De La Recherche Scientifique (CNRS
    Inventors: David Chamla, Andreia Cathelin, Andreas Kaiser
  • Publication number: 20070188237
    Abstract: An electronic device where the ratio between two amplification factors of two amplifiers, called main amplifiers, is adjusted using a control means. The control means constantly equalizes the output signals of the two main amplifiers by adapting one of the control signals. The output signals are acted on in order to adjust the control signals. Owing to the fact that the input signals are in a ratio N, this same ratio is obtained between the amplification factors of the two main amplifiers. The two main control signals, used to control the main amplifiers, are employed for controlling any other amplification factor of at least two other amplifiers or groups of amplifiers, so as to establish a ratio N between these other amplification factors. The main circuit thus allows N to be applied and regulated between the amplification factors of other amplifiers.
    Type: Application
    Filed: December 29, 2006
    Publication date: August 16, 2007
    Applicants: STMicroelectronics SA, Centre National De La Recherche Scientifique (CNRS)
    Inventors: David Chamla, Andreia Cathelin, Andreas Kaiser