Patents by Inventor Wolfgang Roeper
Wolfgang Roeper 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: 11700000Abstract: A CAN bus transmitter has an input to receive a transmit data signal, and CANH and CANL outputs coupled to a CAN bus. The CAN bus transmitter comprises a plurality of CAN driver circuits having inputs coupled through delay circuits with their CANH and CANL outputs in common and connected to the CAN bus. Matching of Cgs capacitances between devices of the CANH and CANL legs provides substantially synchronized changes in the CANH and CANL output logic levels upon a change in the input logic level. Variable delaying of the input logic level changes to each of the plurality of CAN driver circuits reduces emission of unwanted signals from the CAN bus.Type: GrantFiled: January 11, 2022Date of Patent: July 11, 2023Assignee: Microchip Technology IncorporatedInventor: Wolfgang Roeper
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Publication number: 20230011275Abstract: A CAN bus transmitter has an input to receive a transmit data signal, and CANH and CANL outputs coupled to a CAN bus. The CAN bus transmitter comprises a plurality of CAN driver circuits having inputs coupled through delay circuits with their CANH and CANL outputs in common and connected to the CAN bus. Matching of Cgs capacitances between devices of the CANH and CANL legs provides substantially synchronized changes in the CANH and CANL output logic levels upon a change in the input logic level. Variable delaying of the input logic level changes to each of the plurality of CAN driver circuits reduces emission of unwanted signals from the CAN bus.Type: ApplicationFiled: January 11, 2022Publication date: January 12, 2023Applicant: Microchip Technology IncorporatedInventor: Wolfgang Roeper
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Publication number: 20170163056Abstract: A multi-cell battery stack includes a microcontroller and a string of battery management and protection IC devices connected to one another in a daisy chain configuration. Each battery management and protection IC device can include a communication interface circuit that includes pairs of differential input signal lines, receivers including respective current comparator circuits to receive differential signals on the differential input signal lines, and transmitters to provide outgoing differential signals on the differential input signal lines. A digital circuit block allows signals to pass between the receivers and transmitters.Type: ApplicationFiled: February 21, 2017Publication date: June 8, 2017Inventors: Wolfgang Roeper, Hendrik Ahlendorf, Friedemann Schmidt
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Patent number: 9614661Abstract: A multi-cell battery stack includes a microcontroller and a string of battery management and protection IC devices connected to one another in a daisy chain configuration. Each battery management and protection IC device can include a communication interface circuit includes pairs of differential input signal lines, receivers including respective current comparator circuits to receive differential signals on the differential input signal lines, and transmitters to provide outgoing differential signals on the differential input signal lines. A digital circuit block allows signals to pass between the receivers and transmitters.Type: GrantFiled: April 9, 2012Date of Patent: April 4, 2017Assignee: Atmel CorporationInventors: Wolfgang Roeper, Hendrik Ahlendorf, Friedemann Schmidt
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Patent number: 9035691Abstract: A gate drive circuit is disclosed that charges the gate of a switching transistor to a voltage that is high enough to turn the switching transistor fully on and then prevent the charge from flowing back into the gate drive circuit. The gate drive circuit works with a ground rectifier switch by providing a fully differential connection of the switching transistor and its capacitor and resistor in parallel with the antenna.Type: GrantFiled: October 2, 2013Date of Patent: May 19, 2015Assignee: Atmel CorporationInventor: Wolfgang Roeper
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Publication number: 20150091634Abstract: A gate drive circuit is disclosed that charges the gate of a switching transistor to a voltage that is high enough to turn the switching transistor fully on and then prevent the charge from flowing back into the gate drive circuit. The gate drive circuit works with a ground rectifier switch by providing a fully differential connection of the switching transistor and its capacitor and resistor in parallel with the antenna.Type: ApplicationFiled: October 2, 2013Publication date: April 2, 2015Inventor: Wolfgang Roeper
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Patent number: 8884580Abstract: In one embodiment, a method includes receiving a first input current from a battery through a first connection and a second connection and generating a first output current through a third connection to a first node and a fourth connection to a second node. The first and second nodes are configured to output the first output current to an energy store configured to store a charge. The method includes receiving a second input current through the third connection from the first node and the fourth connection from the second nodes and generating a second output current through the first and second connections to charge the battery.Type: GrantFiled: September 27, 2011Date of Patent: November 11, 2014Assignee: Atmel Automotive GmbHInventor: Wolfgang Roeper
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Patent number: 8810199Abstract: In one embodiment, a circuit comprising a first set of one or more semiconductor switches coupled to a first node and a first terminal of an energy store configured to store energy, and a second set of one or more semiconductor switches coupled to a second node and a second terminal of the energy store, each of the first and second sets of semiconductor switches being configured to couple to a terminal of a battery cell.Type: GrantFiled: September 28, 2011Date of Patent: August 19, 2014Assignee: Atmel Automotive GmbHInventor: Wolfgang Roeper
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Publication number: 20130264881Abstract: A multi-cell battery stack includes a microcontroller and a string of battery management and protection IC devices connected to one another in a daisy chain configuration. Each battery management and protection IC device can include a communication interface circuit includes pairs of differential input signal lines, receivers including respective current comparator circuits to receive differential signals on the differential input signal lines, and transmitters to provide outgoing differential signals on the differential input signal lines. A digital circuit block allows signals to pass between the receivers and transmitters.Type: ApplicationFiled: April 9, 2012Publication date: October 10, 2013Applicant: ATMEL CORPORATIONInventors: Wolfgang Roeper, Hendrik Ahlendorf, Friedemann Schmidt
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Publication number: 20120074907Abstract: In one embodiment, a circuit comprising a first set of one or more semiconductor switches coupled to a first node and a first terminal of an energy store configured to store energy, and a second set of one or more semiconductor switches coupled to a second node and a second terminal of the energy store, each of the first and second sets of semiconductor switches being configured to couple to a terminal of a battery cell.Type: ApplicationFiled: September 28, 2011Publication date: March 29, 2012Applicant: Atmel Automotive GmbHInventor: Wolfgang Roeper
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Publication number: 20120074895Abstract: In one embodiment, a method includes receiving a first input current from a battery through a first connection and a second connection and generating a first output current through a third connection to a first node and a fourth connection to a second node. The first and second nodes are configured to output the first output current to an energy store configured to store a charge. The method includes receiving a second input current through the third connection from the first node and the fourth connection from the second nodes and generating a second output current through the first and second connections to charge the battery.Type: ApplicationFiled: September 27, 2011Publication date: March 29, 2012Applicant: Atmel Automotive GmbHInventor: Wolfgang Roeper
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Patent number: 7129788Abstract: A d.c. signal controlled oscillator includes a frequency-determining network having a control input and a modulation input. A phase regulating loop includes the oscillator and components that provide a control signal to the control input. A circuit apparatus for driving the oscillator includes a modulation generator that provides a modulation signal to the modulation input, and a circuit arrangement that autonomously generates a signal depending on and representing a slope of the modulation and provides this slope signal to the modulation generator, which generates the modulation signal dependent on the slope signal.Type: GrantFiled: April 27, 2004Date of Patent: October 31, 2006Assignee: Atmel Germany GmbHInventors: Juergen Eckert, Thorsten Fahlbusch, Burkhard Gehring, Hans-Werner Groh, Horst Haefner, Hermann Hammel, Michael Hecker, Gerald Krimmer, Reinhard Reimann, Wolfgang Roeper, Friedemann Schmidt, Juergen Schnabel, Wolfgang Schneider, Michael Vogt, Hans-Peter Waible
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Publication number: 20040233009Abstract: A d.c. signal controlled oscillator includes a frequency-determining network having a control input and a modulation input. A phase regulating loop includes the oscillator and components that provide a control signal to the control input. A circuit apparatus for driving the oscillator includes a modulation generator that provides a modulation signal to the modulation input, and a circuit arrangement that autonomously generates a signal depending on and representing a slope of the modulation and provides this slope signal to the modulation generator, which generates the modulation signal dependent on the slope signal.Type: ApplicationFiled: April 27, 2004Publication date: November 25, 2004Applicant: ATMEL Germany GmbHInventors: Juergen Eckert, Thorsten Fahlbusch, Burkhard Gehring, Hans-Werner Groh, Horst Haefner, Hermann Hammel, Michael Hecker, Gerald Krimmer, Reinhard Reimann, Wolfgang Roeper, Friedemann Schmidt, Juergen Schnabel, Wolfgang Schneider, Michael Vogt, Hans-Peter Waible