Patents by Inventor Amiad Dvir
Amiad Dvir 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: 10313104Abstract: In some aspects, the disclosure is directed to methods and systems for controlling periodic jitter arising from a phase interpolator (PI). A receiver can receive incoming data. A fractional-N phase-locked loop (PLL) can receive a reference clock. Measurement circuitry can measure a parts per million (PPM) offset between the incoming data and the reference clock, of a PI. The fractional-N PLL can restrict jitter arising from the PI, to frequencies within a predefined bandwidth, by tuning a center frequency of the fractional-N PLL to reduce the PPM offset of the PI.Type: GrantFiled: September 18, 2017Date of Patent: June 4, 2019Assignee: Avago Technologies International Sales Pte. LimitedInventors: Amiad Dvir, Mike Rolfe Ferrara, Vitaly Zborovski, Mario Caresosa, Ryan Hirth, Assaf Naor
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Patent number: 10305708Abstract: Methods, systems, and apparatuses are described for improving the signal integrity of a differential pair of signals by mitigating a non-balanced channel deficiency. For example, signal integrity may be improved by independently shaping and/or independently controlling the slopes (e.g., the rising edge and/or falling edge) of each signal of a differential pair of signals to counteract the effects caused by non-balanced deficiencies to provide a balanced differential pair of signals (i.e., signals having symmetrical impedances, loads, etc.).Type: GrantFiled: July 20, 2018Date of Patent: May 28, 2019Assignee: Avago Technologies International Sales Pte. LimitedInventors: Shwetabh Verma, Bhaskar Banerjee, Amiad Dvir, Assaf Naor
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Publication number: 20190089520Abstract: In some aspects, the disclosure is directed to methods and systems for controlling periodic jitter arising from a phase interpolator (PI). A receiver can receive incoming data. A fractional-N phase-locked loop (PLL) can receive a reference clock. Measurement circuitry can measure a parts per million (PPM) offset between the incoming data and the reference clock, of a PI. The fractional-N PLL can restrict jitter arising from the PI, to frequencies within a predefined bandwidth, by tuning a center frequency of the fractional-N PLL to reduce the PPM offset of the PI.Type: ApplicationFiled: September 18, 2017Publication date: March 21, 2019Applicant: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Amiad Dvir, Mike Rolfe Ferrara, Vitaly Zborovski, Mario Caresosa, Ryan Hirth, Assaf Naor
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Publication number: 20180331862Abstract: Methods, systems, and apparatuses are described for improving the signal integrity of a differential pair of signals by mitigating a non-balanced channel deficiency. For example, signal integrity may be improved by independently shaping and/or independently controlling the slopes (e.g., the rising edge and/or falling edge) of each signal of a differential pair of signals to counteract the effects caused by non-balanced deficiencies to provide a balanced differential pair of signals (i.e., signals having symmetrical impedances, loads, etc.).Type: ApplicationFiled: July 20, 2018Publication date: November 15, 2018Inventors: Shwetabh VERMA, Bhaskar Banerjee, Amiad DVIR, Assaf NAOR
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Patent number: 10033556Abstract: Methods, systems, and apparatuses are described for improving the signal integrity of a differential pair of signals by mitigating a non-balanced channel deficiency. For example, signal integrity may be improved by independently shaping and/or independently controlling the slopes (e.g., the rising edge and/or falling edge) of each signal of a differential pair of signals to counteract the effects caused by non-balanced deficiencies to provide a balanced differential pair of signals (i.e., signals having symmetrical impedances, loads, etc.).Type: GrantFiled: October 3, 2016Date of Patent: July 24, 2018Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Shwetabh Verma, Bhaskar Banerjee, Amiad Dvir, Assaf Naor
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Publication number: 20170104615Abstract: Methods, systems, and apparatuses are described for improving the signal integrity of a differential pair of signals by mitigating a non-balanced channel deficiency. For example, signal integrity may be improved by independently shaping and/or independently controlling the slopes (e.g., the rising edge and/or falling edge) of each signal of a differential pair of signals to counteract the effects caused by non-balanced deficiencies to provide a balanced differential pair of signals (i.e., signals having symmetrical impedances, loads, etc.).Type: ApplicationFiled: October 3, 2016Publication date: April 13, 2017Inventors: Shwetabh Verma, Bhaskar Banerjee, Amiad Dvir, Assaf Naor
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Patent number: 9118982Abstract: An optical line terminal (OLT) is operable in a passive optical network (PON). The OLT comprises a plurality of optical network units (ONUs), an electrical module for generating continuous downstream signal and processing received upstream burst signals according to a communication protocol of the PON and an optical module for transmitting continuous optical signals over a first wavelength and receiving burst optical signals over a second wavelength. The optical module further includes an ONU traffic processing module is electrically coupled to the optical module and the electrical module. The ONU traffic processing module is configured to emulate one of the ONUs of the PON. An interface is used for interfacing between the electrical module and the optical module.Type: GrantFiled: February 8, 2012Date of Patent: August 25, 2015Assignee: Broadcom CorporationInventors: Amiad Dvir, Eliezer Weitz
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Patent number: 9118412Abstract: A system for performing in-band reflection analysis in a passive optical network. The system comprises an optical line terminal (OLT) that includes a transceiver for transmitting continuous downstream data modulated on a first wavelength and receiving upstream burst data modulated on a second wavelength, the OLT further includes a receiver for receiving signals reflected from the PON that are modulated on the first wavelength, wherein the continuous downstream data comprises user data and a test data pattern; and a reflection analysis unit for cross-correlating between a time-shifted version of the transmitted test data pattern and the reflected signals, wherein the test data pattern is time-shifted relatively for an optical location to be tested.Type: GrantFiled: September 27, 2011Date of Patent: August 25, 2015Assignee: Broadcom CorporationInventors: Amiad Dvir, Assaf Naor
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Patent number: 9100128Abstract: A method for enabling AC coupling or DC coupling when receiving burst data signals comprises generating a hold-over pattern, wherein the hold-over pattern is a AC balanced pattern when an AC coupling is required and a low-logic value signal when a DC coupling is required; inputting the generated hold-over pattern to an AC coupling circuit, when no burst data signal is received; inputting only a received burst data signal to the AC coupling circuit, during the reception of such signal; and upon receiving of the entire burst data signal, generating a reset signal causing to input the generated holdover pattern to an AC coupling circuit.Type: GrantFiled: June 28, 2013Date of Patent: August 4, 2015Assignee: Broadcom CorporationInventor: Amiad Dvir
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Patent number: 8923353Abstract: Systems and methods are provided for generating an accurate, stable measurement for a laser bias current. The average current and the extinction ratio are controlled using a dual control loop. The transfer function between the laser and a monitor photo diode (MPD) is characterized. A laser driver control module predicts the average power that will be measured using the MPD relative to the data being transmitted, and this information is used to control a laser driver.Type: GrantFiled: March 15, 2013Date of Patent: December 30, 2014Assignee: Broadcom CorporationInventors: Amiad Dvir, Asaf Koren
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Patent number: 8879594Abstract: Systems and methods are provided to efficiently manage power in a laser a driver of an optical network unit (ONU) of a passive optical network (PON). Using information from an allocation map, the expected next allocated schedule for a transmission can be determined. The driver can be efficiently powered down and powered up based on the time remaining between the end of the current burst and the beginning of the next expected burst so that power is not wasted while the laser has no data to transmit.Type: GrantFiled: March 15, 2013Date of Patent: November 4, 2014Assignee: Broadcom CorporationInventors: Amiad Dvir, Eli Elmoalem, Assaf Koren
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Patent number: 8873960Abstract: A method for detecting faults and their locations in an optical path between an optical line terminal (OLT) of and optical network units (ONUs) of a passive optical network (PON). The method comprises forming a maintenance optical link through the PON between the OLT and a collocated ONU, the OLT and its collocated ONU are each connected to an optical splitter; sending a ranging request from the OLT to the collocated ONU; in response to the ranging request, receiving, over the maintenance optical line, a ranging burst signal including at least a fault analysis detection pattern (FADP); and analyzing the FADP in the received signal by auto-correlating the FADP signal with an expected FADP signal, an uncorrelated event measured through the auto-correlation is indicative of a fault in the optical path of the PON and occurrence times of such events are indicative of the fault's location in the optical path.Type: GrantFiled: July 25, 2011Date of Patent: October 28, 2014Assignee: Broadcom CorporationInventors: Amiad Dvir, Eli Elmoalem
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Patent number: 8861962Abstract: A method for enabling alternating current (AC) coupling of high-speed burst data signals transmitted by an optical network unit (ONU). The method comprises generating a first data pattern to be sent to an optical transceiver through an AC coupling circuit, wherein the first data pattern is a direct current (DC) balanced pattern; generating a second data pattern to be sent to the optical transceiver through the AC coupling circuit, wherein the second data pattern is output prior to transmission of a high-speed burst data signal; and generating a third data pattern to be sent to the optical transceiver through the AC coupling circuit, wherein the third data pattern is output posterior to the transmission of the high-speed burst data signal.Type: GrantFiled: April 4, 2013Date of Patent: October 14, 2014Assignee: Broadcom CorporationInventors: Amiad Dvir, Asaf Koren, David Avishai
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Patent number: 8855491Abstract: A method for performing a protection in passive optical networks. The method comprises forming a protection maintenance link between an active optical line terminal (OLT) and a standby OLT; forming a synchronization link between the active OLT and the standby OLT; computing a base differential distance value; continuously measuring round trip time (RTT) values by the active OLT using the protection maintenance link; periodically sending at least RTT values calculated by the active OLT to the standby OLT over the synchronization link; and computing, by the standby OLT, a new RTT value based on at least a RTT value measured by the active OLT and a standby differential distance value, when a switch-over action is triggered, thereby allowing the standby OLT to serve optical network units (ONUs) in the PON without performing a ranging process.Type: GrantFiled: December 29, 2009Date of Patent: October 7, 2014Assignee: Broadcom CorporationInventors: Eli Elmoalem, Amiad Dvir
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Patent number: 8805183Abstract: An OLT operable in a PON and structured to perform OTDR measurements. The OLT comprises an electrical module for generating continuous downstream signals and processing received upstream burst signals according to a communication protocol of the PON; an optical module for transmitting continuous optical signals over a first wavelength, receiving optical upstream burst signals over a second wavelength, and transmitting optical upstream burst signals over a third wavelength, wherein the optical module further includes an ONU traffic processing module being electrically coupled to the optical module and the electrical module, wherein the ONU traffic processing module is configured to emulate one of a plurality of ONUs of the PON, to generate an analysis pattern to be transmitted as an optical upstream burst signal over a third wavelength, and analyze an analysis pattern received in an optical upstream burst signal for the purpose of performing the OTDR measurements.Type: GrantFiled: May 23, 2012Date of Patent: August 12, 2014Assignee: Broadcom CorporationInventor: Amiad Dvir
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Publication number: 20140119395Abstract: Systems and methods are provided for generating an accurate, stable measurement for a laser bias current. The average current and the extinction ratio are controlled using a dual control loop. The transfer function between the laser and a monitor photo diode (MPD) is characterized. A laser driver control module predicts the average power that will be measured using the MPD relative to the data being transmitted, and this information is used to control a laser driver.Type: ApplicationFiled: March 15, 2013Publication date: May 1, 2014Applicant: Broadcom CorporationInventors: Amiad DVIR, Assaf KOREN
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Publication number: 20140119396Abstract: Systems and methods are provided to efficiently manage power in a laser a driver of an optical network unit (ONU) of a passive optical network (PON). Using information from an allocation map, the expected next allocated schedule for a transmission can be determined. The driver can be efficiently powered down and powered up based on the time remaining between the end of the current burst and the beginning of the next expected burst so that power is not wasted while the laser has no data to transmit.Type: ApplicationFiled: March 15, 2013Publication date: May 1, 2014Applicant: Broadcom CorporationInventors: Amiad DVIR, Eli Elmoalem, Assaf Koren
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Publication number: 20130287395Abstract: A method for enabling AC coupling or DC coupling when receiving burst data signals comprises generating a hold-over pattern, wherein the hold-over pattern is a AC balanced pattern when an AC coupling is required and a low-logic value signal when a DC coupling is required; inputting the generated hold-over pattern to an AC coupling circuit, when no burst data signal is received; inputting only a received burst data signal to the AC coupling circuit, during the reception of such signal; and upon receiving of the entire burst data signal, generating a reset signal causing to input the generated holdover pattern to an AC coupling circuit.Type: ApplicationFiled: June 28, 2013Publication date: October 31, 2013Inventor: Amiad DVIR
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Patent number: 8538257Abstract: A method for performing an optical line analysis of continuous data signals transmitted in a passive optical network (PON). The method comprises determining, from an optical signal of the optical line, at least one of a phase early/late indicator based on a phase position of an input continuous data signal relative to sampling clock signals, a difference phase indicator based on an input phase control code, and a low frequency jitter indicator based on an input phase control code; computing a plurality of statistical measures regarding frequency and amplitude components of a jitter of the input continuous data signal, wherein the statistical measures are computed based on one of the phase early/late information indicator, the difference phase indicator, and the low frequency jitter indicator; and analyzing the plurality of statistical measures to detect optical failures in the PON and determining a root cause of each of the detected failures.Type: GrantFiled: November 29, 2011Date of Patent: September 17, 2013Assignee: Broadcom CorporationInventors: Amiad Dvir, Alex Goldstein, David Avishai
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Patent number: 8515282Abstract: A method for enabling AC coupling or DC coupling when receiving burst data signals comprises generating a hold-over pattern, wherein the hold-over pattern is a AC balanced pattern when an AC coupling is required and a low-logic value signal when a DC coupling is required; inputting the generated hold-over pattern to an AC coupling circuit, when no burst data signal is received; inputting only a received burst data signal to the AC coupling circuit, during the reception of such signal; and upon receiving of the entire burst data signal, generating a reset signal causing to input the generated hold-over pattern to an AC coupling circuit.Type: GrantFiled: December 14, 2010Date of Patent: August 20, 2013Assignee: Broadcom CorporationInventor: Amiad Dvir