Patents by Inventor Heiko Koerner
Heiko Koerner 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: 10461758Abstract: A ring oscillator (200) comprises a feedback chain (110, 122) having a plurality of inverters (111-113). The ring oscillator (200) also comprises, for at least one of the inverters (111-113) of the chain (110, 122), a further inverter (211). Each of the at least one further inverter (211) is connected in parallel with the corresponding inverter (111-113) of the chain (110, 122) by means of a capacitor (250).Type: GrantFiled: May 10, 2017Date of Patent: October 29, 2019Assignee: Infineon Technologies AGInventor: Heiko Koerner
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Publication number: 20170353190Abstract: A ring oscillator (200) comprises a feedback chain (110, 122) having a plurality of inverters (111-113). The ring oscillator (200) also comprises, for at least one of the inverters (111-113) of the chain (110, 122), a further inverter (211). Each of the at least one further inverter (211) is connected in parallel with the corresponding inverter (111-113) of the chain (110, 122) by means of a capacitor (250).Type: ApplicationFiled: May 10, 2017Publication date: December 7, 2017Inventor: Heiko Koerner
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Patent number: 9785179Abstract: A reference current generating circuit may comprise a first transistor with a gate, a source and a drain and a second transistor with a gate, a source and a drain. The source of the first transistor and the source of the second transistor are connected to one another and the width-to-length ratios of the first and the second transistors are equal. A differential amplifier has two voltage inputs, of which the first is at a reference potential while the second is connected to a first node coupled to the drain of the first transistor. A reference current generating circuit is designed such that the drain-source voltage of the second transistor is greater in amount than the drain-source voltage of the first transistor. An output circuit is set up to output a reference current based on the current through the second transistor.Type: GrantFiled: September 2, 2015Date of Patent: October 10, 2017Assignee: Infineon Technologies AGInventor: Heiko Koerner
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Publication number: 20160062385Abstract: A reference current generating circuit may comprise a first transistor with a gate, a source and a drain and a second transistor with a gate, a source and a drain is provided. In this case, the source of the first transistor and the source of the second transistor are connected to one another and the width-to-length ratios of the first transistor and the second transistor are equal. A differential amplifier has two voltage inputs, of which the first is at a reference potential while the second is connected to a first node, which is coupled to the drain of the first transistor. The gate of the first transistor and the gate of the second transistor are connected to the first output of the differential amplifier. The reference current generating circuit is designed such that the drain-source voltage of the second transistor is greater in amount than the drain-source voltage of the first transistor.Type: ApplicationFiled: September 2, 2015Publication date: March 3, 2016Inventor: Heiko KOERNER
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Patent number: 9166604Abstract: Representative implementations of devices and techniques provide error detection for a phase-locked-loop (PLL) device. A timing monitor is arranged to count pulses output by one or more portions of the PLL device, a quantity or pattern of the pulses indicating an error of the PLL device.Type: GrantFiled: April 25, 2012Date of Patent: October 20, 2015Assignee: INFINEON TECHNOLOGIES AGInventor: Heiko Koerner
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Patent number: 8917122Abstract: Various embodiments relate to frequency dividers. A current of a current source of the frequency divider is controlled based on a property of an output signal of the frequency divider.Type: GrantFiled: September 6, 2013Date of Patent: December 23, 2014Assignee: Infinion Technologies AGInventor: Heiko Koerner
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Patent number: 8587352Abstract: A frequency division circuit with a rational-valued division ratio includes a frequency divider with a selectable integer-valued division ratio supplied with an input signal of a first frequency. An output signal provides a second frequency. A first sigma-delta modulator provides a first modulated control signal representative of a first fractional number. A second sigma-delta modulator provides a second modulated control signal of a second fractional number. The integer-valued division ratio of the frequency divider is modified in accordance with the modulation of the first and the second modulated control signals.Type: GrantFiled: September 16, 2011Date of Patent: November 19, 2013Assignee: Infineon Technologies Austria AGInventor: Heiko Koerner
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Publication number: 20130285721Abstract: Representative implementations of devices and techniques provide error detection for a phase-locked-loop (PLL) device. A timing monitor is arranged to count pulses output by one or more portions of the PLL device, a quantity or pattern of the pulses indicating an error of the PLL device.Type: ApplicationFiled: April 25, 2012Publication date: October 31, 2013Inventor: Heiko KOERNER
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Publication number: 20130069696Abstract: A frequency division circuit with a rational-valued division ratio includes a frequency divider with a selectable integer-valued division ratio supplied with an input signal of a first frequency. An output signal provides a second frequency. A first sigma-delta modulator provides a first modulated control signal representative of a first fractional number. A second sigma-delta modulator provides a second modulated control signal of a second fractional number. The integer-valued division ratio of the frequency divider is modified in accordance with the modulation of the first and the second modulated control signals.Type: ApplicationFiled: September 16, 2011Publication date: March 21, 2013Applicant: INFINEON TECHNOLOGIES AUSTRIA AGInventor: Heiko Koerner
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Patent number: 7893699Abstract: An identification device for electronic circuits comprises at least two electronic components having different electronic characteristics, a detection unit configured to detect at least one electrical parameter determining the electronic characteristics of the electronic components and an evaluation unit configured to evaluate a mismatch exhibited by the at least two electronic components with respect to each other. In order to distinguish different electronic circuits, the at least one electrical parameter of the electronic components is detected by the detection unit and is analyzed by the evaluation unit.Type: GrantFiled: December 3, 2007Date of Patent: February 22, 2011Assignee: Infineon Technologies AGInventor: Heiko Koerner
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Patent number: 7659788Abstract: An amplitude regulating circuit for an oscillator with an input for a supply signal having an electrical quantity depending on an amplitude of an oscillation of the oscillator has a supply circuit with a control input for a first control signal and a supply output for the supply signal based on the first control signal, a reference circuit with an input for a reference supply signal having a reference quantity, a reference supply circuit with a reference control input for a second control signal and a reference supply output for the reference supply signal based on the second control signal and a comparator circuit with a first control signal output for the first control signal based on the electrical quantity and the electrical reference quantity and a second control signal output for the second control signal based on the electrical quantity and the electrical reference quantity.Type: GrantFiled: July 12, 2007Date of Patent: February 9, 2010Assignee: Infineon Technologies AGInventor: Heiko Koerner
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Publication number: 20090140720Abstract: An identification device for electronic circuits comprises at least two electronic components having different electronic characteristics, a detection unit configured to detect at least one electrical parameter determining the electronic characteristics of the electronic components and an evaluation unit configured to evaluate a mismatch exhibited by the at least two electronic components with respect to each other. In order to distinguish different electronic circuits, the at least one electrical parameter of the electronic components is detected by the detection unit and is analyzed by the evaluation unit.Type: ApplicationFiled: December 3, 2007Publication date: June 4, 2009Applicant: Infineon Technologies AGInventor: Heiko Koerner
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Publication number: 20080061865Abstract: An apparatus for providing a temperature dependent output signal generates a temperature independent signal on the basis of a supply signal and a control signal and generates the output signal on the basis of the supply signal, the control signal and the temperature independent signal.Type: ApplicationFiled: September 13, 2006Publication date: March 13, 2008Inventor: Heiko Koerner
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Publication number: 20080048793Abstract: An amplitude regulating circuit for an oscillator with an input for a supply signal having an electrical quantity depending on an amplitude of an oscillation of the oscillator has a supply circuit with a control input for a first control signal and a supply output for the supply signal based on the first control signal, a reference circuit with an input for a reference supply signal having a reference quantity, a reference supply circuit with a reference control input for a second control signal and a reference supply output for the reference supply signal based on the second control signal and a comparator circuit with a first control signal output for the first control signal based on the electrical quantity and the electrical reference quantity and a second control signal output for the second control signal based on the electrical quantity and the electrical reference quantity.Type: ApplicationFiled: July 12, 2007Publication date: February 28, 2008Inventor: Heiko Koerner
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Patent number: 7170359Abstract: An amplitude-controlled oscillator circuit includes an oscillator for providing a frequency signal having a controllable signal amplitude, a divider circuit for a frequency division of the frequency signal, a minimum amplitude of the frequency signal being associated to the divider circuit and the divider circuit being formed to output a divided frequency signal having a predetermined quality when the signal amplitude is greater than or equal to the minimum amplitude. In addition, the amplitude-controlled oscillator circuit includes a controller for controlling the signal amplitude of the frequency signal, the controller being formed to control the signal amplitude such that it is greater than or equal to the minimum amplitude. It is possible by means of such an amplitude-controlled oscillator circuit to ensure in a simple and low-cost manner that the divided frequency signal has a predetermined quality for example within a wide temperature range.Type: GrantFiled: January 18, 2005Date of Patent: January 30, 2007Assignee: Infineon Technologies AGInventor: Heiko Koerner
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Patent number: 7170356Abstract: A circuit with variable capacitance includes a capacitance, wherein the capacitance includes a first partial capacitance and a second partial capacitance connected in parallel to the first partial capacitance, wherein a capacitance value of the first partial capacitance depends on a first bias of the partial capacitance, and a capacitance value of the second partial capacitance depends on a second bias of the second partial capacitance. The circuit with variable capacitance further includes a unit for providing the first bias and the second bias. With such a circuit with variable capacitance, it is possible to achieve a more linear and flatter characteristic tuning curve of the circuit with variable capacitance as compared to a conventional circuit with variable capacitance in a simple way.Type: GrantFiled: February 23, 2005Date of Patent: January 30, 2007Assignee: Infineon Technologies AGInventor: Heiko Körner
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Patent number: 7049884Abstract: A demodulation arrangement for a radio signal is disclosed wherein an I/Q mixer converts the radio signal to a real and an imaginary component and supplies the components to a limiting circuit. The limiting circuit limits the amplitude of the signals applied to its inputs. A demodulator circuit receives the output of the limiting circuit and converts the signal components to a demodulated signal including a sequence of pulses. A pulse shaper circuit converts the pulses having pulse amplitudes that are greater than a first threshold value to output pulses having a predetermined first amplitude. This reduces fluctuations in the pulse amplitudes, thus leading to a reduction in low-frequency interference and jitter in the data signal.Type: GrantFiled: July 29, 2004Date of Patent: May 23, 2006Assignee: Infineon Technologies AGInventor: Heiko Körner
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Publication number: 20050184766Abstract: An amplitude-controlled oscillator circuit includes an oscillator for providing a frequency signal having a controllable signal amplitude, a divider circuit for a frequency division of the frequency signal, a minimum amplitude of the frequency signal being associated to the divider circuit and the divider circuit being formed to output a divided frequency signal having a predetermined quality when the signal amplitude is greater than or equal to the minimum amplitude. In addition, the amplitude-controlled oscillator circuit includes a controller for controlling the signal amplitude of the frequency signal, the controller being formed to control the signal amplitude such that it is greater than or equal to the minimum amplitude. It is possible by means of such an amplitude-controlled oscillator circuit to ensure in a simple and low-cost manner that the divided frequency signal has a predetermined quality for example within a wide temperature range.Type: ApplicationFiled: January 18, 2005Publication date: August 25, 2005Inventor: Heiko Koerner
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Patent number: 6812801Abstract: A crystal oscillator circuit has capacitors that govern the resonant circuit and are designed such that they can be connected and disconnected, for frequency adjustment. A respective compensation capacitor is connected opposite and in mirror-image form to these capacitors that govern the resonant circuit. This compensation capacitor influences only the dynamic operating point, but has virtually no effect on the oscillation frequency. In consequence, it is not possible to shift the operating point during adjustment of the oscillation frequency, thus ensuring stability of the oscillating system and operation at the desired operating point.Type: GrantFiled: December 20, 2002Date of Patent: November 2, 2004Assignee: Infineon Technologies AGInventor: Heiko Körner