Patents by Inventor Richard Gaggl
Richard Gaggl 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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Patent number: 9794665Abstract: According to an embodiment, an interface circuit includes a current replicator and a receiver. The current replicator includes a power terminal coupled to a first reference node, an output terminal configured to output a signal proportional to a signal received from a transducer, and an interface terminal coupled to the transducer. Using a single interface terminal, the current replicator may be configured to provide power to the transducer and receive output signals from the transducer. The receiver may include a first input terminal coupled to the output terminal, a second input terminal coupled to a second reference node, and a current converter circuit coupled to the first input terminal.Type: GrantFiled: April 27, 2016Date of Patent: October 17, 2017Assignee: Infineon Technologies AGInventors: Wilfried Florian, Andreas Wiesbauer, Richard Gaggl
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Publication number: 20170276723Abstract: Sensor devices and methods are provided where a test signal is applied to a capacitive sensor. Furthermore, a bias voltage is applied to the capacitive sensor via a high impedance component. A path for applying the test signal excludes the high impedance component. Using this testing signal, in some implementations a capacity imbalance of the capacitive sensor may be detected.Type: ApplicationFiled: March 23, 2016Publication date: September 28, 2017Inventors: Cesare Buffa, Richard Gaggl
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Publication number: 20170279425Abstract: A signal amplification method includes receiving, from a capacitive sensor, a first input signal by a first control terminal of a first transistor, and a second input signal by a first control terminal of a second transistor. The method also includes producing a first output signal, including amplifying a first signal at a first load path terminal of the first transistor using a first inverting amplifier having an output coupled to a resistance network, and producing a second output signal, including amplifying a second signal at a first load path terminal of the second transistor using a second inverting amplifier having an output coupled to the resistance network. The method also includes feeding back the first and second output signal to a second load path terminal of the first transistor and to a second load path terminal of the second transistor via the resistance network according to a pre-determined fraction.Type: ApplicationFiled: March 23, 2016Publication date: September 28, 2017Inventors: Luca Valli, Benno Muehlbacher, Richard Gaggl
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Publication number: 20170245034Abstract: An embodiment amplifier circuit includes a pair of subcircuits that includes a first subcircuit and a second subcircuit, each of which includes a buffer amplifier and a feedback circuit that includes a feedback capacitor. The amplifier circuit also includes a pair of output terminals. The first subcircuit and the second subcircuit each generate a different output signal of a pair of output signals that includes a first output signal and a second output signal. The amplifier circuit is configured for receiving a positive differential input signal at the first subcircuit, receiving a negative differential input signal at the second subcircuit, and receiving the pair of output signals at the pair of output terminals. The amplifier circuit is also configured for transmitting the first output signal to the feedback circuit of the first subcircuit, and transmitting the second output signal to the feedback circuit of the second subcircuit.Type: ApplicationFiled: February 23, 2016Publication date: August 24, 2017Inventors: Francesco Polo, Richard Gaggl
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Patent number: 9525339Abstract: According to various embodiments, a circuit includes a charge pump and a feedback circuit. The charge pump includes a first input, a second input configured to receive an offset signal, and an output terminal configured to provide a charge pump signal based on the first and second inputs. The feedback circuit includes a first input coupled to the output of the charge pump, a second input configured to be coupled to a reference signal, an enable input configured to enable and disable the feedback circuit, and a feedback output coupled to the first input of the charge pump.Type: GrantFiled: November 13, 2015Date of Patent: December 20, 2016Assignee: Infineon Technologies AGInventors: Christian Jenkner, Richard Gaggl
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Publication number: 20160241943Abstract: According to an embodiment, an interface circuit includes a current replicator and a receiver. The current replicator includes a power terminal coupled to a first reference node, an output terminal configured to output a signal proportional to a signal received from a transducer, and an interface terminal coupled to the transducer. Using a single interface terminal, the current replicator may be configured to provide power to the transducer and receive output signals from the transducer. The receiver may include a first input terminal coupled to the output terminal, a second input terminal coupled to a second reference node, and a current converter circuit coupled to the first input terminal.Type: ApplicationFiled: April 27, 2016Publication date: August 18, 2016Inventors: Wilfried Florian, Andreas Wiesbauer, Richard Gaggl
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Patent number: 9357295Abstract: According to an embodiment, an interface circuit includes a current replicator and a receiver. The current replicator includes a power terminal coupled to a first reference node, an output terminal configured to output a signal proportional to a signal received from a transducer, and an interface terminal coupled to the transducer. Using a single interface terminal, the current replicator may be configured to provide power to the transducer and receive output signals from the transducer. The receiver may include a first input terminal coupled to the output terminal, a second input terminal coupled to a second reference node, and a current converter circuit coupled to the first input terminal.Type: GrantFiled: October 22, 2013Date of Patent: May 31, 2016Assignee: Infineon Technologies AGInventors: Wilfried Florian, Andreas Wiesbauer, Richard Gaggl
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Patent number: 9332369Abstract: In accordance with an embodiment, an interface circuit includes a variable voltage bias generator coupled to a transducer, and a measurement circuit coupled to an output of the transducer. The measurement circuit is configured to measure an output amplitude of the transducer. The interface circuit further includes a calibration controller coupled to the bias generator and the measurement circuit, and is configured to set a sensitivity of the transducer and interface circuit during an auto-calibration sequence.Type: GrantFiled: October 22, 2013Date of Patent: May 3, 2016Assignee: Infineon Technologies AGInventors: Christian Jenkner, Richard Gaggl
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Patent number: 9319779Abstract: In accordance with an embodiment, an interface circuit includes an amplifier configured to be coupled to a transducer, a first bypass circuit coupled to a first voltage reference and the amplifier, a second bypass circuit coupled to the first voltage reference and the amplifier, and a control circuit coupled to the second bypass circuit. The first bypass circuit conducts a current when an input signal amplitude greater than a first threshold is applied to the transducer and the control circuit causes the second bypass circuit to conduct a current for a first time period after the first bypass circuit conducts a current.Type: GrantFiled: October 22, 2013Date of Patent: April 19, 2016Assignee: Infineon Technologies AGInventors: Christian Jenkner, Richard Gaggl, Benno Muehlbacher
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Publication number: 20160072383Abstract: According to various embodiments, a circuit includes a charge pump and a feedback circuit. The charge pump includes a first input, a second input configured to receive an offset signal, and an output terminal configured to provide a charge pump signal based on the first and second inputs. The feedback circuit includes a first input coupled to the output of the charge pump, a second input configured to be coupled to a reference signal, an enable input configured to enable and disable the feedback circuit, and a feedback output coupled to the first input of the charge pump.Type: ApplicationFiled: November 13, 2015Publication date: March 10, 2016Inventors: Christian Jenkner, Richard Gaggl
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Patent number: 9253569Abstract: In accordance with an embodiment, a cancelation circuit includes a current mirror and a low pass filter. The current mirror includes an input terminal configured to accept an input current comprising a first noise signal, a first mirrored output and a second mirrored output. The low pass filter includes an input coupled to the first mirrored output and an output coupled to the second mirrored output. A sum of a current from the second mirrored output and a current of from the output of the low pass filter includes a phase-inverted version of the first noise signal.Type: GrantFiled: December 20, 2013Date of Patent: February 2, 2016Assignee: Infineon Technologies AGInventors: Wilfried Florian, Luca Valli, Richard Gaggl
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Patent number: 9190903Abstract: According to various embodiments, a circuit includes a charge pump and a feedback circuit. The charge pump includes a first input, a second input configured to receive an offset signal, and an output terminal configured to provide a charge pump signal based on the first and second inputs. The feedback circuit includes a first input coupled to the output of the charge pump, a second input configured to be coupled to a reference signal, an enable input configured to enable and disable the feedback circuit, and a feedback output coupled to the first input of the charge pump.Type: GrantFiled: December 20, 2013Date of Patent: November 17, 2015Assignee: Infineon Technologies, AGInventors: Christian Jenkner, Richard Gaggl
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Publication number: 20150180333Abstract: According to various embodiments, a circuit includes a charge pump and a feedback circuit. The charge pump includes a first input, a second input configured to receive an offset signal, and an output terminal configured to provide a charge pump signal based on the first and second inputs. The feedback circuit includes a first input coupled to the output of the charge pump, a second input configured to be coupled to a reference signal, an enable input configured to enable and disable the feedback circuit, and a feedback output coupled to the first input of the charge pump.Type: ApplicationFiled: December 20, 2013Publication date: June 25, 2015Applicant: INFINEON TECHNOLOGIES AGInventors: Christian Jenkner, Richard Gaggl
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Publication number: 20150181335Abstract: In accordance with an embodiment, a cancelation circuit includes a current mirror and a low pass filter. The current mirror includes an input terminal configured to accept an input current comprising a first noise signal, a first mirrored output and a second mirrored output. The low pass filter includes an input coupled to the first mirrored output and an output coupled to the second mirrored output. A sum of a current from the second mirrored output and a current of from the output of the low pass filter includes a phase-inverted version of the first noise signal.Type: ApplicationFiled: December 20, 2013Publication date: June 25, 2015Inventors: Wilfried Florian, Luca Valli, Richard Gaggl
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Publication number: 20150110295Abstract: In accordance with an embodiment, an interface circuit includes a variable voltage bias generator coupled to a transducer, and a measurement circuit coupled to an output of the transducer. The measurement circuit is configured to measure an output amplitude of the transducer. The interface circuit further includes a calibration controller coupled to the bias generator and the measurement circuit, and is configured to set a sensitivity of the transducer and interface circuit during an auto-calibration sequence.Type: ApplicationFiled: October 22, 2013Publication date: April 23, 2015Applicant: Infineon Technologies AGInventors: Christian Jenkner, Richard Gaggl
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Publication number: 20150110300Abstract: According to an embodiment, an interface circuit includes a current replicator and a receiver. The current replicator includes a power terminal coupled to a first reference node, an output terminal configured to output a signal proportional to a signal received from a transducer, and an interface terminal coupled to the transducer. Using a single interface terminal, the current replicator may be configured to provide power to the transducer and receive output signals from the transducer. The receiver may include a first input terminal coupled to the output terminal, a second input terminal coupled to a second reference node, and a current converter circuit coupled to the first input terminal.Type: ApplicationFiled: October 22, 2013Publication date: April 23, 2015Applicant: INFINEON TECHNOLOGIES AGInventors: Wilfried Florian, Andreas Wiesbauer, Richard Gaggl
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Publication number: 20150110296Abstract: In accordance with an embodiment, an interface circuit includes an amplifier configured to be coupled to a transducer, a first bypass circuit coupled to a first voltage reference and the amplifier, a second bypass circuit coupled to the first voltage reference and the amplifier, and a control circuit coupled to the second bypass circuit. The first bypass circuit conducts a current when an input signal amplitude greater than a first threshold is applied to the transducer and the control circuit causes the second bypass circuit to conduct a current for a first time period after the first bypass circuit conducts a current.Type: ApplicationFiled: October 22, 2013Publication date: April 23, 2015Applicant: INFINEON TECHNOLOGIES AGInventors: Christian Jenkner, Richard Gaggl, Benno Muehlbacher
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Patent number: 8867736Abstract: A control device includes a circuit operable to sense an analog input voltage dependent on a line current flowing via a communication line of a terminal generate an analog difference voltage in a constant line current operation based on a difference between the sensed analog input voltage and an analog feedback voltage which depends on an adjustable nominal direct-current value and filter a sequence of control error values from a sequence of digital difference voltage values converted from the generated analog difference voltage. The circuit is further operable to convert a control value generated from the sequence of control error values in the constant line current operation to an analog direct voltage for supplying the terminal and convert the nominal direct-current value into the analog feedback voltage in the constant line current operation.Type: GrantFiled: December 29, 2011Date of Patent: October 21, 2014Assignee: Lantiq Deutschland GmbHInventors: Richard Gaggl, Christian Jenkner, Gerhard Noessing
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Patent number: 8787559Abstract: A CODEC circuit for POTS system comprises a digital circuit for outputting a digital control signal having a first bit width, the digital control signal being indicative of a voltage to be applied to a POTS subscriber line pair. Further, the CODEC comprises a noise shaper coupled to an output of the digital circuit for generating a noise-shaped control signal and a digital-to-analog converter coupled to an output of the noise shaper, the input of the digital-to-analog converter having a second bit width being larger than 1 and smaller than the first bit width.Type: GrantFiled: February 28, 2012Date of Patent: July 22, 2014Assignee: Lantiq Deutschland GmbHInventors: Christian Jenkner, Gerhard Noessing, Richard Gaggl, Joachim Pichler
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Patent number: 8243916Abstract: A CODEC circuit for POTS system comprises a digital circuit for outputting a digital control signal having a first bit width, the digital control signal being indicative of a voltage to be applied to a POTS subscriber line pair. Further, the CODEC circuit comprises a noise shaper coupled to an output of the digital circuit for generating a noise-shaped control signal and a digital-to-analog converter coupled to an output of the noise shaper, the input of the digital-to-analog converter having a second bit width being larger than 1 and smaller than the first bit width.Type: GrantFiled: January 15, 2007Date of Patent: August 14, 2012Assignee: Lantiq Deutschland GmbHInventors: Christian Jenkner, Gerhard Noessing, Richard Gaggl, Joachim Pichler