Patents by Inventor Marcel F. C. Schemmann
Marcel F. C. Schemmann 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: 11968474Abstract: A design for a Tunable Cable Simulator with a minimum number of components and low insertion loss.Type: GrantFiled: June 12, 2023Date of Patent: April 23, 2024Assignee: ARRIS Enterprises LLCInventors: Zhijian Sun, Brent D. Arnold, Eric J. Cormier, Marcel F. C. Schemmann
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Publication number: 20240031526Abstract: A design for a Tunable Cable Simulator with a minimum number of components and low insertion loss.Type: ApplicationFiled: June 12, 2023Publication date: January 25, 2024Applicant: ARRIS Enterprises LLCInventors: Zhijian SUN, Brent D. ARNOLD, Eric J. CORMIER, Marcel F.C. SCHEMMANN
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Patent number: 11870403Abstract: A half duplex amplifier for a cable network.Type: GrantFiled: September 26, 2022Date of Patent: January 9, 2024Assignee: ARRIS Enterprises LLCInventors: Zoran Maricevic, Marcel F. C. Schemmann, Zhijian Sun, Shodhan K. Shetty, Dean Painchaud, Brian J. Solomon
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Publication number: 20230403128Abstract: Devices, systems, and methods for amplifying full duplex signals that include a first frequency band shared between an FDX upstream signal and a downstream FDX signal, and a second frequency band having a legacy upstream signal, where the legacy upstream signal and the FDX upstream signal are amplified by a common amplifier.Type: ApplicationFiled: June 13, 2023Publication date: December 14, 2023Applicant: ARRIS Enterprises LLCInventors: Marcel F.C. SCHEMMANN, Shamsuddin H. CHASMAWALA, Zhijian SUN, Brent D. ARNOLD
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Publication number: 20230098958Abstract: A half duplex amplifier for a cable network.Type: ApplicationFiled: September 26, 2022Publication date: March 30, 2023Applicant: ARRIS Enterprises LLCInventors: Zoran MARICEVIC, Marcel F.C. SCHEMMANN, Zhijian SUN, Shodhan K. SHETTY, Dean PAINCHAUD, Brian J. SOLOMON
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Patent number: 8995844Abstract: An optical homodyne communication system and method in which a side carrier is transmitted along with data bands in an optical data signal, and upon reception, the side carrier is boosted, shifted to the center of the data bands, and its polarization state is matched to the polarization state of the respective data bands to compensate for polarization mode dispersion during transmission. By shifting a boosted side carrier to the center of the data bands, and by simultaneously compensating for the effects of polarization mode dispersion, the provided system and method simulate the advantages of homodyne reception using a local oscillator. The deleterious effects of chromatic dispersion on the data signals within the data bands are also compensated for by applying a corrective function to the data signals which precisely counteracts the effects of chromatic dispersion.Type: GrantFiled: April 17, 2014Date of Patent: March 31, 2015Assignee: Teradvance Communications LLCInventors: Marcel F. C. Schemmann, Zoran Maricevic, Antonije R. Djordjevic, Darby Racey
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Publication number: 20140270808Abstract: An optical homodyne communication system and method in which a side carrier is transmitted along with data bands in an optical data signal, and upon reception, the side carrier is boosted, shifted to the center of the data bands, and its polarization state is matched to the polarization state of the respective data bands to compensate for polarization mode dispersion during transmission. By shifting a boosted side carrier to the center of the data bands, and by simultaneously compensating for the effects of polarization mode dispersion, the provided system and method simulate the advantages of homodyne reception using a local oscillator. The deleterious effects of chromatic dispersion on the data signals within the data bands are also compensated for by applying a corrective function to the data signals which precisely counteracts the effects of chromatic dispersion.Type: ApplicationFiled: April 17, 2014Publication date: September 18, 2014Applicant: Teradvance Communications LLCInventors: Marcel F.C. Schemmann, Zoran Maricevic, Antonije R. Djordjevic, Darby Racey
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Patent number: 8737843Abstract: An optical homodyne communication system and method in which a side carrier is transmitted along with data bands in an optical data signal, and upon reception, the side carrier is boosted, shifted to the center of the data bands, and its polarization state is matched to the polarization state of the respective data bands to compensate for polarization mode dispersion during transmission. By shifting a boosted side carrier to the center of the data bands, and by simultaneously compensating for the effects of polarization mode dispersion, the provided system and method simulate the advantages of homodyne reception using a local oscillator. The deleterious effects of chromatic dispersion on the data signals within the data bands are also compensated for by applying a corrective function to the data signals which precisely counteracts the effects of chromatic dispersion.Type: GrantFiled: January 5, 2012Date of Patent: May 27, 2014Assignee: Teradvance Communications, LLCInventors: Marcel F.C. Schemmann, Zoran Maricevic, Antonije R. Djordjevic, Darby Racey
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Publication number: 20120128361Abstract: An optical homodyne communication system and method in which a side carrier is transmitted along with data bands in an optical data signal, and upon reception, the side carrier is boosted, shifted to the center of the data bands, and its polarization state is matched to the polarization state of the respective data bands to compensate for polarization mode dispersion during transmission. By shifting a boosted side carrier to the center of the data bands, and by simultaneously compensating for the effects of polarization mode dispersion, the provided system and method simulate the advantages of homodyne reception using a local oscillator. The deleterious effects of chromatic dispersion on the data signals within the data bands are also compensated for by applying a corrective function to the data signals which precisely counteracts the effects of chromatic dispersion.Type: ApplicationFiled: January 5, 2012Publication date: May 24, 2012Inventors: Marcel F.C. Schemmann, Zoran Maricevic, Antonije R. Djordjevic, Darby Racey
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Patent number: 8103173Abstract: An optical homodyne communication system and method in which a side carrier is transmitted along with data bands in an optical data signal, and upon reception, the side carrier is boosted, shifted to the center of the data bands, and its polarization state is matched to the polarization state of the respective data bands to compensate for polarization mode dispersion during transmission. By shifting a boosted side carrier to the center of the data bands, and by simultaneously compensating for the effects of polarization mode dispersion, the provided system and method simulate the advantages of homodyne reception using a local oscillator. The deleterious effects of chromatic dispersion on the data signals within the data bands are also compensated for by applying a corrective function to the data signals which precisely counteracts the effects of chromatic dispersion.Type: GrantFiled: September 4, 2009Date of Patent: January 24, 2012Assignee: Teradvance Communications, LLCInventors: Marcel F. C. Schemmann, Zoran Maricevic, Antonije R. Djordjevic, Darby Racey
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Publication number: 20110007299Abstract: A sensor module (1) for measuring the distance to a target and/or the velocity of the target (50), the sensor module (1) comprising at least one laser source (100), at least one detector (200) being adapted to detect modulated laser light and at least one control element the control element (400) being adapted to vary the focus point of the laser light and/or the intensity of the laser light and/or the direction of the laser light. The control of the laser light emitted by the laser source (100) either by active optical devices as variable focus lenses or controllable attenuators or passive optical elements in combination with arrays of laser sources (100) and detectors (200) enable flexible and robust sensor modules.Type: ApplicationFiled: January 12, 2009Publication date: January 13, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Holger Moench, Mark Carpaij, Alexander M. Van Der Lee, Stefan Schwan, Meng Han, Marcel F.C. Schemmann
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Publication number: 20100046957Abstract: An optical homodyne communication system and method in which a side carrier is transmitted along with data bands in an optical data signal, and upon reception, the side carrier is boosted, shifted to the center of the data bands, and its polarization state is matched to the polarization state of the respective data bands to compensate for polarization mode dispersion during transmission. By shifting a boosted side carrier to the center of the data bands, and by simultaneously compensating for the effects of polarization mode dispersion, the provided system and method simulate the advantages of homodyne reception using a local oscillator. The deleterious effects of chromatic dispersion on the data signals within the data bands are also compensated for by applying a corrective function to the data signals which precisely counteracts the effects of chromatic dispersion.Type: ApplicationFiled: September 4, 2009Publication date: February 25, 2010Applicant: TERADVANCE COMMUNICATIONS, LLCInventors: Marcel F.C. SCHEMMANN, Zoran MARICEVIC, Antonije R. DJORDJEVIC, Darby RACEY
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Patent number: 7599627Abstract: An optical homodyne communication system and method in which a side carrier is transmitted along with data bands in an optical data signal, and upon reception, the side carrier is boosted, shifted to the center of the data bands, and its polarization state is matched to the polarization state of the respective data bands to compensate for polarization mode dispersion during transmission. By shifting a boosted side carrier to the center of the data bands, and by simultaneously compensating for the effects of polarization mode dispersion, the provided system and method simulate the advantages of homodyne reception using a local oscillator. The deleterious effects of chromatic dispersion on the data signals within the data bands are also compensated for by applying a corrective function to the data signals which precisely counteracts the effects of chromatic dispersion.Type: GrantFiled: May 31, 2001Date of Patent: October 6, 2009Assignee: Teradvance Communications, LLCInventors: Marcel F. C. Schemmann, Zoran Maricevic, Antonije R. Djordjevic, Darby Racey
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Patent number: 7433598Abstract: A cable television (CATV) distribution system, and a method of forming and using the CATV distribution system. In a first embodiment, a narrowcast optical signal is generated by an uncooled laser and converted by a receiver into a narrowcast electrical signal. In a second embodiment, a narrowcast optical signal generated by an uncooled laser is combined with a broadcast optical signal by an optical coupler at a hub of the CATV distribution system to generate a composite optical signal, which at a CATV node is: split into the broadcast and narrowcast optical components, respectively converted into broadcast and narrowcast electrical components, and combined into a composite electrical signal. In a third embodiment, a narrowcast optical signal is generated by an uncooled laser and then combined with the broadcast optical signal by a single receiver.Type: GrantFiled: June 29, 2001Date of Patent: October 7, 2008Assignee: Broadband Royalty Corp.Inventors: Marcel F. C. Schemmann, Venkatesh G. Mutalik
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Patent number: 7287965Abstract: A drive circuit (18) produces a drive signal for a pump (10) having a piezoelectric actuator (14), with the piezoelectric actuator (14) forming a part of the drive circuit (18) and serving to shape a waveform of the drive signal. The drive circuit (18) comprises a pulse generator (100) which generates pulses; a converter circuit (102) which receives the pulses and produces charge packets at a rate which equals a desired drive frequency; and, the piezoelectric actuator (14). The piezoelectric actuator (14) receives the charge packets and, by its capacitive nature, integrates the charge packets to shape the waveform of the drive signal. Preferably, the piezoelectric actuator (14) integrates the charge packets to yield a drive field that approximates a sine wave. In one non-limiting example embodiment, the pulse generator (100) comprises a microcontroller-based pulsed width modulator (PWM) circuit (116) and the converter circuit (102) comprises a flyback circuit.Type: GrantFiled: April 2, 2004Date of Patent: October 30, 2007Assignee: Adaptiv Energy LLCInventors: James Vogeley, Marcel F. C. Schemmann, Sanford Jones
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Patent number: 7194211Abstract: Optical transmitter/receivers for use in a DWDM systems are provided. Transmission of data signals in a quadrature-return-to-zero (QRZ) format achieves a data transmission rate equal to eight times a base data rate, i.e., 80 Gbps over a 100 GHz channel if the base data rate is 10 Gbps, with high non-linear performance by setting the polarization state of the data bands such that non-linear effects induced by PMD are reduced. Additionally, a transmitter achieves a transmission data rate equal to 16 times the base data rate by sharpening the QRZ pulses and interleaving pulse-sharpened QRZ data signals in the time domain, further doubling the data rate. Using counterpropagation in the transmitter, carrier signals and data signals traverse the same length of fiber, reducing fringing effects in the transmitter. Related techniques enhance reception and detection of data at high data rates. A local pulse-sharpened carrier is mixed with a QRZ data signal at a detector reducing amplification noise by a factor of two.Type: GrantFiled: June 7, 2006Date of Patent: March 20, 2007Assignee: Teradvance Communications LLCInventors: Marcel F. C. Schemmann, Zoran Maricevic, Bogdan Hoanca
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Patent number: 7082268Abstract: Optical transmitter/receivers for use in a DWDM systems are provided. Transmission of data signals in a quadrature-return-to-zero (QRZ) format achieves a data transmission rate equal to eight times a base data rate, i.e., 80 Gbps over a 100 GHz channel if the base data rate is 10 Gbps, with high non-linear performance by setting the polarization state of the data bands such that non-linear effects induced by PMD are reduced. Additionally, a transmitter achieves a transmission data rate equal to 16 times the base data rate by sharpening the QRZ pulses and interleaving pulse-sharpened QRZ data signals in the time domain, further doubling the data rate. Using counterpropagation in the transmitter, carrier signals and data signals traverse the same length of fiber, reducing fringing effects in the transmitter. Related techniques enhance reception and detection of data at high data rates. A local pulse-sharpened carrier is mixed with a QRZ data signal at a detector reducing amplification noise by a factor of two.Type: GrantFiled: November 16, 2001Date of Patent: July 25, 2006Assignee: Teradvance Communications, LLCInventors: Marcel F. C. Schemmann, Zoran Maricevic, Bogdan Hoanca
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Patent number: 6809613Abstract: A transmission line filter having low reflectivity and Gaussian characteristics includes at least one inductive element aligned along the transmission line and at least one shunt configuration branching off the transmission line including a capacitive element and a resistive element. The transmission line filter is embodied in complete and incomplete Gaussian filters, and in both lumped element and distributed-element configurations. A method of designing a transmission line filter having low reflectivity and Gaussian characteristics is provided in which values for desired filter parameters are ascertained, formulas for the values of the inductive, capacitive and resistive elements are derived in terms of the desired filter parameters and the number of half-cells, a number of half-cells for the filter required to achieve the desired filter parameters is selected, and lumped element values for the inductive, capacitive, and resistive elements are estimated using the selected number of half-cells.Type: GrantFiled: December 30, 2002Date of Patent: October 26, 2004Assignee: Teradvance Communications, LLCInventors: Antonije R. Djordjevic, Aleksandra Stekovic, Marcel F. C. Schemmann, Zoran Maricevic
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Publication number: 20040208572Abstract: A method and apparatus for a wavelength division multiplexing (WDM) optical transmission system wherein the optical transmission system has an optical signal transmitter which functions as a passive hub, in which only optical signal processing is performed, while associated electronic signal processing is performed outside the passive hub. The passive hub includes upconverter devices that place the optical signal bands at frequencies that allow separation of the bands at a detector. The detectors are thus loaded with more than one wavelength at a time. The optical transmission signals are optically combined and/or amplified onto a single fiber that is fed to a headend device, where the wavelengths of the optical transmission signals are demultiplexed and fed to the receivers.Type: ApplicationFiled: December 27, 2001Publication date: October 21, 2004Applicant: Koninklijke Philips Electronics N.W.Inventors: Marcel F.C. Schemmann, Venkatesh G. Mutalik
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Patent number: 6728117Abstract: A switching power supply that can operate in critical conduction mode as self-oscillating power supply (SOP) during moderate load, and in discontinuous conduction mode (DCM) under the control of a pulse-width modulated signal under small load, whereby the power consumption of the supply is decreases continuously as the load is decreased. A frequency modulated self-oscillating switching power supply (FMSOP) having a power switch, the switch being held OFF, after a zero-current detector detects that an output current falls to zero, until allowed to turn ON after a pulse having a load-modulated width that corresponds to the load. The FMSOP operates with a switch controller that may include a flip-flop to latch the detector's signal, a load-modulated pulse generator, and a combinatorial logic gate to combine the pulse and the latched signal.Type: GrantFiled: October 23, 2001Date of Patent: April 27, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Marcel F. C. Schemmann, Lee Chappell