Patents by Inventor Martin Opitz
Martin Opitz 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).
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Publication number: 20240056119Abstract: A method and a device for controlling antenna changeover of a radio receiver having at least two antennas, wherein the device is configured to change over the transmission in the form of transmitting and/or receiving signals by a first antenna of the radio transceiver to a transmission of signals by an additional antenna of the radio transceiver, wherein an antenna changeover decision interval is determined, after which a decision on the changeover between the antennas is provided at an antenna changeover decision time in each case, taking into consideration at least the negative count of preceding successive negative changeover decisions.Type: ApplicationFiled: October 18, 2021Publication date: February 15, 2024Applicant: Continental Automotive Technologies GmbHInventor: Martin Opitz
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Patent number: 11885867Abstract: A method for determining the distance between an authentication device carried by a user and a motor vehicle, each including a wireless communication module so as to exchange a data frame, the data frame being modulated by changing the phase of a reference signal. The method includes the following steps of: the vehicle receiving a modulated reference signal, sent by the device, demodulating the received signal in order to extract an in-phase component and a quadrature component therefrom, computing the power value of the signal on the basis of the maximum amplitude value of the in-phase component and of the maximum amplitude value of the quadrature component, and determining the distance between the device and the vehicle on the basis of the computed power value.Type: GrantFiled: December 10, 2019Date of Patent: January 30, 2024Inventors: Sylvain Godet, Martin Opitz
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Publication number: 20220050192Abstract: A method for determining the distance between an authentication device carried by a user and a motor vehicle, each including a wireless communication module so as to exchange a data frame, the data frame being modulated by changing the phase of a reference signal. The method includes the following steps of: the vehicle receiving a modulated reference signal, sent by the device, demodulating the received signal in order to extract an in-phase component and a quadrature component therefrom, computing the power value of the signal on the basis of the maximum amplitude value of the in-phase component and of the maximum amplitude value of the quadrature component, and determining the distance between the device and the vehicle on the basis of the computed power value.Type: ApplicationFiled: December 10, 2019Publication date: February 17, 2022Inventors: Sylvain Godet, Martin Opitz
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Patent number: 10103929Abstract: The present disclosure teaches methods for digitally transmitting data. An example method may include: receiving a modulated signal containing at least one useful signal or noise or interference signals; repeatedly estimating at least one parameter of the received signal relevant to the demodulation of the useful signal; monitoring changes in the repeatedly estimated parameters; and detecting a useful signal based at least in part on whether one or more changes in the repeatedly estimated parameters satisfy at least one particular, predefined condition.Type: GrantFiled: September 30, 2014Date of Patent: October 16, 2018Assignee: CONTINENTAL AUTOMOTIVE GMBHInventor: Martin Opitz
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Patent number: 9742461Abstract: A system providing a spread spectrum and a narrowband data transmission may comprise a DSSS transmitter and a DSSS receiver. The DSSS transmitter may convert a bit succession (di) into a chip succession (sk) using a chip sequence (cj, cj?) and send a succession of impulses (s(t)) corresponding to the chip succession (sk). The DSSS receiver may receive impulses (s(t)) sent by the transmitter and filter the received impulses (r(t)) using a filter having an impulse response (x(t)) dependent on the chip sequence (cj, cj?). The chip sequence (cj) may be a spread sequence. The narrowband data transmission may use chip sequence (cj?) and a corresponding impulse response (x(t)) of the filter. The chip sequence (cj?) does not comprise a succession having two directly successive arithmetic sign changes and an arithmetic sign change does not occur after the first and before the last chip in the chip sequence (cj?).Type: GrantFiled: July 3, 2014Date of Patent: August 22, 2017Assignee: CONTINENTAL AUTOMOTIVE GMBHInventors: Martin Opitz, Thomas Reisinger
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Publication number: 20160241426Abstract: The present disclosure teaches methods for digitally transmitting data. An example method may include: receiving a modulated signal containing at least one useful signal or noise or interference signals; repeatedly estimating at least one parameter of the received signal relevant to the demodulation of the useful signal; monitoring changes in the repeatedly estimated parameters; and detecting a useful signal based at least in part on whether one or more changes in the repeatedly estimated parameters satisfy at least one particular, predefined condition.Type: ApplicationFiled: September 30, 2014Publication date: August 18, 2016Applicant: Continental Automotive GmbHInventor: Martin Opitz
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Publication number: 20160164570Abstract: A system providing a spread spectrum and a narrowband data transmission may comprise a DSSS transmitter and a DSSS receiver. The DSSS transmitter may convert a bit succession (di) into a chip succession (sk) using a chip sequence (cj, cj?) and send a succession of impulses (s(t)) corresponding to the chip succession (sk). The DSSS receiver may receive impulses (s(t)) sent by the transmitter and filter the received impulses (r(t)) using a filter having an impulse response (x(t)) dependent on the chip sequence (cj, cj?). The chip sequence (cj) may be a spread sequence. The narrowband data transmission may use chip sequence (cj?) and a corresponding impulse response (x(t)) of the filter. The chip sequence (cj?) does not comprise a succession having two directly successive arithmetic sign changes and an arithmetic sign change does not occur after the first and before the last chip in the chip sequence (cj?).Type: ApplicationFiled: July 3, 2014Publication date: June 9, 2016Applicant: Continental Automotive GmbHInventors: Martin Opitz, Thomas Reisinger
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Patent number: 9065551Abstract: A circuit arrangement for adaptively suppressing interference signals includes a first local oscillator for generating a first local oscillator signal and a second local oscillator for generating a second local oscillator signal, each signal having an adjustable frequency. The circuit arrangement also includes a first mixer for converting a high-frequency signal into a corresponding intermediate frequency signal using the first local oscillator signal and a second mixer for converting the intermediate frequency signal into a corresponding baseband signal using the second local oscillator signal. The circuit arrangement also includes a notch filter with a rigidly defined blocking range.Type: GrantFiled: May 15, 2012Date of Patent: June 23, 2015Assignee: CONTINENTAL AUTOMOTIVE GMBHInventors: Markus Aunkofer, Martin Opitz, Thomas Reisinger
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Patent number: 8989753Abstract: A method for allocating a transmission signal to a transmission channel which has a transmission bandwidth and a rated center frequency and which is established between a radio transmitter and a radio receiver has the steps: emitting the transmission signal on the radio transmitter end with an actual transmitter frequency; receiving the transmission signal in the radio receiver; determining the frequency of the transmission signal in the radio receiver; and deciding on the allocation of the transmission signal to a transmission channel if the frequency determined by the radio receiver lies in a predetermined frequency range.Type: GrantFiled: July 15, 2010Date of Patent: March 24, 2015Assignee: Continental Automotive GmbHInventors: Markus Aunkofer, Thomas Georgi, Christian Kursawe, Martin Opitz, Thomas Reisinger
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Patent number: 8971385Abstract: A method and arrangement are disclosed for acquiring a spread spectrum signal produced by means of transmitter-end spreading of a bit sequence using a spread code signal, which provide for the reception of the spread spectrum signal; provision of a receiver-end spread code signal which corresponds to the transmitter-end spread code signal; performance of polyphase correlations for respective different code phases which give rise to polyphase correlation results which are each associated with different code phases; filtration using at least two of the code phases; determination of an extreme value in the filtered polyphase correlation results, and determination of the code phase which is associated with the extreme value.Type: GrantFiled: November 22, 2011Date of Patent: March 3, 2015Assignee: Continental Automotive GmbHInventor: Martin Opitz
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Patent number: 8787425Abstract: A signal processing arrangement is designed to process a digitalized phase-modulated and/or digitalized spreaded input signal (1) and has a complex channelizer (2) which despreads and/or demodulates the input signal (1) in the time range on the basis of a folding operation.Type: GrantFiled: January 18, 2010Date of Patent: July 22, 2014Assignee: Continental Automotive GmbHInventors: Lutz Braungardt, Martin Opitz, Thomas Reisinger
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Publication number: 20140169411Abstract: A circuit arrangement for adaptively suppressing interference signals includes a first local oscillator for generating a first local oscillator signal and a second local oscillator for generating a second local oscillator signal, each signal having an adjustable frequency. The circuit arrangement also includes a first mixer for converting a high-frequency signal into a corresponding intermediate frequency signal using the first local oscillator signal and a second mixer for converting the intermediate frequency signal into a corresponding baseband signal using the second local oscillator signal. The circuit arrangement also includes a notch filter with a rigidly defined blocking range.Type: ApplicationFiled: May 15, 2012Publication date: June 19, 2014Inventors: Markus Aunkofer, Martin Opitz, Thomas Reisinger
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Publication number: 20130235909Abstract: A method and arrangement are disclosed for acquiring a spread spectrum signal produced by means of transmitter-end spreading of a bit sequence using a spread code signal, which provide for the reception of the spread spectrum signal; provision of a receiver-end spread code signal which corresponds to the transmitter-end spread code signal; performance of polyphase correlations for respective different code phases which give rise to polyphase correlation results which are each associated with different code phases; filtration using at least two of the code phases; determination of an extreme value in the filtered polyphase correlation results, and determination of the code phase which is associated with the extreme value.Type: ApplicationFiled: November 22, 2011Publication date: September 12, 2013Inventor: Martin Opitz
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Patent number: 8411894Abstract: A transducer generates acoustic energy. The transducer is suitable for incorporation into any device that needs sound reproduction capability, including devices with generally rectangular geometries such as cell phones, PDAs, and portable gaming devices. The transducer includes a displaceable membrane with a deformable corner. The deformable corner may extend the frequency range over which the transducer generates acoustic energy without distortion. The deformable corner may be part of a membrane periphery around the displaceable membrane. The membrane periphery may be square, triangular, or may take any other polygonal shape.Type: GrantFiled: April 14, 2010Date of Patent: April 2, 2013Assignee: AKG Acoustrics GmbHInventor: Martin Opitz
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Patent number: 8260608Abstract: A method conceals dropouts in one or more audio channels of a multi-channel arrangement. The method maps transmitted signals into a frequency domain during an error-free signal transmission of two or more channels. A magnitude spectra and spectral filter coefficients are derived. The spectral filter coefficients relate the magnitude spectrum of the audio channel to the magnitude spectrum of at least one other channel. When a dropout occurs, a replacement signal is generated through the filter coefficients and a substitution signal. The filter coefficients may be generated prior to the detection of the dropout.Type: GrantFiled: June 5, 2009Date of Patent: September 4, 2012Assignee: AKG Acoustics GmbHInventors: Martin Opitz, Cornelia Falch, Robert Höldrich
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Patent number: 8208679Abstract: A transducer membrane enhances sound reproduction. Curved portions of the membrane periphery contribute to the enhanced sound reproduction. The transducer membrane may add or improve sound reproduction capability in cell phones, gaming systems, personal data assistants, or other devices.Type: GrantFiled: August 1, 2007Date of Patent: June 26, 2012Assignee: AKG Acoustics GmbHInventor: Martin Opitz
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Publication number: 20120122401Abstract: A method for allocating a transmission signal to a transmission channel which has a transmission bandwidth (14) and a rated center frequency and which is established between a radio transmitter (1) and a radio receiver (2) has the steps: emitting the transmission signal on the radio transmitter (1) end with an actual transmitter frequency; receiving the transmission signal in the radio receiver (2); determining the frequency of the transmission signal in the radio receiver (2); and deciding on the allocation of the transmission signal to a transmission channel if the frequency determined by the radio receiver (2) lies in a predetermined frequency range.Type: ApplicationFiled: July 15, 2010Publication date: May 17, 2012Inventors: Markus Aunkofer, Thomas Georgi, Christian Kursawe, Martin Opitz, Thomas Reisinger
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Publication number: 20110280283Abstract: A signal processing arrangement is designed to process a digitalized phase-modulated and/or digitalized spreaded input signal (1) and has a complex channelizer (2) which despreads and/or demodulates the input signal (1) in the time range on the basis of a folding operation.Type: ApplicationFiled: January 18, 2010Publication date: November 17, 2011Inventors: Lutz Braungardt, Martin Opitz, Thomas Reisinger
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Publication number: 20100266148Abstract: A transducer generates acoustic energy. The transducer is suitable for incorporation into any device that needs sound reproduction capability, including devices with generally rectangular geometries such as cell phones, PDAs, and portable gaming devices. The transducer includes a displaceable membrane with a deformable corner. The deformable corner may extend the frequency range over which the transducer generates acoustic energy without distortion. The deformable corner may be part of a membrane periphery around the displaceable membrane. The membrane periphery may be square, triangular, or may take any other polygonal shape.Type: ApplicationFiled: April 14, 2010Publication date: October 21, 2010Applicant: AKG Acoustics GmbHInventor: Martin Opitz
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Publication number: 20100215076Abstract: In a method and a device (10) for transmitting a digital signal sequence, with a prescribed number of individual signals, over large distances relative to the transmission power, the digital signal sequence is repeatedly sent from a first communication device (1, 1a). A second communication device (2, 2a) receives the repeatedly sent signal sequence, wherein a first series of consecutive individual signals of the repeatedly sent digital signal sequence is received (S1) first, the number of individual signals corresponding to the number of consecutive individual signals prescribed for the digital signal sequence. The sequence of individual signals is converted into a sequence of symbol values representing the individual signals and stored in a register (24). Further sequences of individual signals received at a defined time interval after the first sequence of individual signals are also converted into symbol value sequences and superimposed on the sequence stored in the register (24).Type: ApplicationFiled: February 27, 2008Publication date: August 26, 2010Inventors: Herbert Froitzheim, Martin Opitz