Patents by Inventor Denis Downey
Denis Downey 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: 10812120Abstract: Indication of an amount of processing performed in detection and removal of ingress noise may be provided. A frequency domain representation of a narrowband region of a digital input signal may be received. The received frequency domain representation of the narrowband region may be compared with a predetermined threshold. Results from the comparison of the received frequency domain representation of the narrowband region with the predetermined threshold may be aggregated. Based on the aggregated results, an indication of an amount of processing performed by an ingress exciser in removing the ingress noise may be provided.Type: GrantFiled: September 1, 2019Date of Patent: October 20, 2020Assignee: Cisco Technology, Inc.Inventors: Richard Meller, Glendon L. Akins, III, Denis Downey, James An, Koen Van Renterghem
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Publication number: 20190386691Abstract: Indication of an amount of processing performed in detection and removal of ingress noise may be provided. A frequency domain representation of a narrowband region of a digital input signal may be received. The received frequency domain representation of the narrowband region may be compared with a predetermined threshold. Results from the comparison of the received frequency domain representation of the narrowband region with the predetermined threshold may be aggregated. Based on the aggregated results, an indication of an amount of processing performed by an ingress exciser in removing the ingress noise may be provided.Type: ApplicationFiled: September 1, 2019Publication date: December 19, 2019Applicant: Cisco Technology, Inc.Inventors: Richard Meller, Glendon L. Akins, III, Denis Downey, James An, Koen Van Renterghem
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Patent number: 10404298Abstract: Indication of an amount of processing performed in detection and removal of ingress noise may be provided. A frequency domain representation of a narrowband region of a digital input signal may be received. The received frequency domain representation of the narrowband region may be compared with a predetermined threshold. Results from the comparison of the received frequency domain representation of the narrowband region with the predetermined threshold may be aggregated. Based on the aggregated results, an indication of an amount of processing performed by an ingress exciser in removing the ingress noise may be provided.Type: GrantFiled: October 11, 2017Date of Patent: September 3, 2019Assignee: Cisco Technology, Inc.Inventors: Richard Meller, Glendon L. Akins, III, Denis Downey, James An, Koen Van Renterghem
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Publication number: 20180034490Abstract: Indication of an amount of processing performed in detection and removal of ingress noise may be provided. A frequency domain representation of a narrowband region of a digital input signal may be received. The received frequency domain representation of the narrowband region may be compared with a predetermined threshold. Results from the comparison of the received frequency domain representation of the narrowband region with the predetermined threshold may be aggregated. Based on the aggregated results, an indication of an amount of processing performed by an ingress exciser in removing the ingress noise may be provided.Type: ApplicationFiled: October 11, 2017Publication date: February 1, 2018Applicant: Cisco Technology, Inc.Inventors: Richard Meller, Glendon L. Akins, III, Denis Downey, James An, Koen Van Renterghem
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Patent number: 9800276Abstract: Indication of an amount of processing performed in detection and removal of ingress noise may be provided. A frequency domain representation of a narrowband region of a digital input signal may be received. The received frequency domain representation of the narrowband region may be compared with a predetermined threshold. Results from the comparison of the received frequency domain representation of the narrowband region with the predetermined threshold may be aggregated. Based on the aggregated results, an indication of an amount of processing performed by an ingress excizer in removing the ingress noise may be provided.Type: GrantFiled: October 8, 2013Date of Patent: October 24, 2017Assignee: Cisco Technology, Inc.Inventors: Richard Meller, Glendon L. Akins, III, Denis Downey, James An, Koen Van Renterghem
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Patent number: 9184878Abstract: Presented herein are non-disruptive noise estimation techniques that utilize a correlation between attributes of a received signal and the noise to generate estimated noise values for symbols of the signal. More specifically, a digital signal comprising symbols transmitted over a telecommunications network is received. For each of a plurality of the symbols, an estimated noise value associated with the respective symbol is generated through a correlation of a log-likelihood ratio (LLR) value to predetermined noise values. The estimated noise values for the plurality of symbols are used to generate noise information representing time and frequency characteristics of noise in the telecommunications network.Type: GrantFiled: June 27, 2014Date of Patent: November 10, 2015Assignee: Cisco Technology, Inc.Inventors: Hang Jin, Koen Van Renterghem, Richard Meller, Denis Downey, Glendon L. Akins, III
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Patent number: 9143808Abstract: A system and related methodology are provided that are configured to receive, at a first network element, multiple channels of video delivered as respective streams of packets, form a packet switched communication frame including a sub-layer header, encapsulate packets from the multiple channels of video into a payload field of the communication frame to obtain encapsulated packets, identify the encapsulated packets in the payload field with respective tags in the sub-layer header, designate the encapsulated packets in the payload field with respective launch values in the sub-layer header, and transmit the communication frame to a second network element. The first network element may be a universal edge quadrature amplitude modulator (UEQAM) and the second network element may be a relatively distant fiber node of a cable plant. The sub-layer header may also include Program Clock Reference (PCR) offset data that can be used for PCR re-stamping.Type: GrantFiled: September 14, 2012Date of Patent: September 22, 2015Assignee: Cisco Technology, Inc.Inventors: Michael J. Healy, John T. Chapman, Denis Downey, Yi Tong Tse
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Patent number: 9071401Abstract: Presented herein are pilot-less noise estimation techniques that utilize a correlation between attributes of a received signal and the noise to generate signal-to-noise ratio (SNR) estimate for the signal. More specifically, an interval of a digital signal is received a log-likelihood ratio (LLR) value is calculated for a plurality of bits in the interval of the signal. A scalar value that relates to a distribution of the calculated LLR values is computed. The SNR for the interval of the signal is determined based on a predetermined correlation between the scalar value and noise within the received interval of the signal.Type: GrantFiled: October 17, 2013Date of Patent: June 30, 2015Assignee: Cisco Technology, Inc.Inventors: Hang Jin, Koen Van Renterghem, Richard Meller, Denis Downey
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Publication number: 20150110205Abstract: Presented herein are non-disruptive noise estimation techniques that utilize a correlation between attributes of a received signal and the noise to generate estimated noise values for symbols of the signal. More specifically, a digital signal comprising symbols transmitted over a telecommunications network is received. For each of a plurality of the symbols, an estimated noise value associated with the respective symbol is generated through a correlation of a log-likelihood ratio (LLR) value to predetermined noise values. The estimated noise values for the plurality of symbols are used to generate noise information representing time and frequency characteristics of noise in the telecommunications network.Type: ApplicationFiled: June 27, 2014Publication date: April 23, 2015Inventors: Hang Jin, Koen Van Renterghem, Richard Meller, Denis Downey, Glendon L. Akins, III
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Publication number: 20150110227Abstract: Presented herein are pilot-less noise estimation techniques that utilize a correlation between attributes of a received signal and the noise to generate signal-to-noise ratio (SNR) estimate for the signal. More specifically, an interval of a digital signal is received a log-likelihood ratio (LLR) value is calculated for a plurality of bits in the interval of the signal. A scalar value that relates to a distribution of the calculated LLR values is computed. The SNR for the interval of the signal is determined based on a predetermined correlation between the scalar value and noise within the received interval of the signal.Type: ApplicationFiled: October 17, 2013Publication date: April 23, 2015Applicant: Cisco Technology, Inc.Inventors: Hang Jin, Koen Van Renterghem, Richard Meller, Denis Downey
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Publication number: 20150098534Abstract: Indication of an amount of processing performed in detection and removal of ingress noise may be provided. A frequency domain representation of a narrowband region of a digital input signal may be received. The received frequency domain representation of the narrowband region may be compared with a predetermined threshold. Results from the comparison of the received frequency domain representation of the narrowband region with the predetermined threshold may be aggregated. Based on the aggregated results, an indication of an amount of processing performed by an ingress exciser in removing the ingress noise may be provided.Type: ApplicationFiled: October 8, 2013Publication date: April 9, 2015Applicant: Cisco Technology, Inc.Inventors: Richard Meller, Glendon L. Akins, III, Denis Downey, James An, Koen Van Renterghem
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Publication number: 20140079060Abstract: A system and related methodology are provided that are configured to receive, at a first network element, multiple channels of video delivered as respective streams of packets, form a packet switched communication frame including a sub-layer header, encapsulate packets from the multiple channels of video into a payload field of the communication frame to obtain encapsulated packets, identify the encapsulated packets in the payload field with respective tags in the sub-layer header, designate the encapsulated packets in the payload field with respective launch values in the sub-layer header, and transmit the communication frame to a second network element. The first network element may be a universal edge quadrature amplitude modulator (UEQAM) and the second network element may be a relatively distant fiber node of a cable plant. The sub-layer header may also include Program Clock Reference (PCR) offset data that can be used for PCR re-stamping.Type: ApplicationFiled: September 14, 2012Publication date: March 20, 2014Applicant: Cisco Technology, Inc.Inventors: Michael J. Healy, John T. Chapman, Denis Downey, Yi Tong Tse
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Patent number: 8576842Abstract: A system, and related methodology, are provided that are configured to receive, at a first network element such as a Universal Edge Quadrature Amplitude Modulator (UEQAM), multiple channels of data delivered as respective streams of packets, form a packet switched communication frame including a sub-layer header, encapsulate packets from the respective multiple channels into a payload field of the packet switched communication frame, identify the packets encapsulated in the payload field with respective tags in the sub-layer header, and transmit the packet switched communication frame to a second network element such as a Downstream Physical (DS-PHY) entity where the individual packets are recovered and mapped to selected respective stream processing resources based on respective tags.Type: GrantFiled: July 28, 2011Date of Patent: November 5, 2013Assignee: Cisco Technology, Inc.Inventors: John T. Chapman, Denis Downey, Michael J. Healy, Yi Tong Tse
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Publication number: 20130028253Abstract: A system, and related methodology, are provided that are configured to receive, at a first network element such as a Universal Edge Quadrature Amplitude Modulator (UEQAM), multiple channels of data delivered as respective streams of packets, form a packet switched communication frame including a sub-layer header, encapsulate packets from the respective multiple channels into a payload field of the packet switched communication frame, identify the packets encapsulated in the payload field with respective tags in the sub-layer header, and transmit the packet switched communication frame to a second network element such as a Downstream Physical (DS-PHY) entity where the individual packets are recovered and mapped to selected respective stream processing resources based on respective tags.Type: ApplicationFiled: July 28, 2011Publication date: January 31, 2013Applicant: CISCO TECHNOLOGY, INC.Inventors: John T. Chapman, Denis Downey, Michael J. Healy, Yi Tong Tse
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Patent number: 7873077Abstract: The clocks of one or more edgeQAM devices are synchronized with a master clock at the remotely located CMTS. A master clock signal may be transmitted via a dedicated gigabit Ethernet link. Alternatively, master clock information contained in a time synchronization message may be transmitted for use in adjusting local oscillators that drive local clocks at respective edgeQAM devices.Type: GrantFiled: June 18, 2008Date of Patent: January 18, 2011Assignee: Arris GroupInventors: Denis Downey, Alex Volkov, Michael Harrington, Frank O'Keeffe, Yury Kharkunou
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Publication number: 20080285597Abstract: The clocks of one or more edgeQAM devices are synchronized with a master clock at the remotely located CMTS. A master clock signal may be transmitted via a dedicated gigabit Ethernet link. Alternatively, master clock information contained in a time synchronization message may be transmitted for use in adjusting local oscillators that drive local clocks at respective edgeQAM devices.Type: ApplicationFiled: June 18, 2008Publication date: November 20, 2008Applicant: ARRISInventors: Denis Downey, Alex Volkov, Michael Harrington, Frank O'Keeffe, Yury Kharkunou
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Patent number: 7403547Abstract: The clocks of one or more edgeQAM devices are synchronized with a master clock at the remotely located CMTS. A master clock signal may be transmitted via a dedicated gigabit Ethernet link. Alternatively, master clock information contained in a time synchronization message may be transmitted for use in adjusting local oscillators that drive local clocks at respective edgeQAM devices. In another embodiment, the downstream sample rate to particular edgeQAM devices may be sampled and used to lock a local clock at respective canary modems dedicated to each edgeQAM device. A canary modem's clock is compared to the master clock, and a resulting phase error is communicated to the respective edgeQAM device for use in adjusting its local clock. Or, TDMA upstream ranging burst average trends are used to estimate edgeQAM clock error. Each respective edgeQAM uses this error to adjust its clock.Type: GrantFiled: July 15, 2005Date of Patent: July 22, 2008Assignee: Arris International, Inc.Inventors: Denis Downey, Alex Volkov, Michael Hamington, Frank O'Keeffe, Yury Kharkunou
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Publication number: 20060013262Abstract: The clocks of one or more edgeQAM devices are synchronized with a master clock at the remotely located CMTS. A master clock signal may be transmitted via a dedicated gigabit Ethernet link. Alternatively, master clock information contained in a time synchronization message may be transmitted for use in adjusting local oscillators that drive local clocks at respective edgeQAM devices. In another embodiment, the downstream sample rate to particular edgeQAM devices may be sampled and used to lock a local clock at respective canary modems dedicated to each edgeQAM device. A canary modem's clock is compared to the master clock, and a resulting phase error is communicated to the respective edgeQAM device for use in adjusting its local clock. Or, TDMA upstream ranging burst average trends are used to estimate edgeQAM clock error. Each respective edgeQAM uses this error to adjust its clock.Type: ApplicationFiled: July 15, 2005Publication date: January 19, 2006Inventors: Denis Downey, Alex Volkov, Michael Hamington, Frank O'Keeffe, Yury Kharkunou
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Publication number: 20050123001Abstract: A device receives packets associated with a program stream at an addressable communications port, and assigns them to one of a plurality of QAM channels. Multiplexed program packets, DOCSIS data or multimedia packets or a combination of both, are transmitted over the QAM channel. DSG messaging transports requests for content to a server, transports queries to mapping tables and returns information from the tables to a manager that, along with processors, determine which channel to use for downstream transport of the multiplexed streams. The manager assigns a connection identifier corresponding to a channel and program number combination to the packets, and sends the identifier, via DSG, to the requesting/receiving user device; the identifier instructs the user device how to tune and receive the requested packets. The identifier may use seven bits for program numbers, two for output port number and two for channel frequency.Type: ApplicationFiled: November 5, 2004Publication date: June 9, 2005Inventors: Jeff Craven, Mark Bugajski, Charles Cheevers, Ian Wheelock, Denis Downey, Michael Harrington
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Publication number: 20020176913Abstract: A device for marking the head of a beverage which has a body portion having a marking end which, in use, is held in or under a developing head whilst the beverage is poured and is then drawn through the head after the head has substantially developed. A method for marking the head of a pint of beer using this device, including the steps of pouring beer into a glass and forming a head thereon, and drawing said device through said head to form a mark therein. Preferably, at least part of the device is located under the head as it forms and then drawn through the head from underneath to the top of the head. In a second aspect, the device has a body portion with at least one opening defining a shape. A granulated substance is sprinkled through the opening and lands on the top of a beverage or a food in a pattern reflecting the shape of the opening.Type: ApplicationFiled: May 23, 2002Publication date: November 28, 2002Inventor: Denis Downey