Patents by Inventor David Avishai
David Avishai 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: 10333911Abstract: A system, method, and computer program product for booting a device are provided herein. The method includes the steps of synchronizing the device based on a downstream signal from a second device, receiving a software from the second device for booting on a reserved downstream channel of the second device, and storing the received first software in a volatile memory. The device does not pre-store the software in a non-volatile memory.Type: GrantFiled: September 27, 2016Date of Patent: June 25, 2019Assignee: Avago Technologies International Sales Pte. LimitedInventors: Eli Elmoalem, David Avishai, Asaf Koren
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Publication number: 20170017484Abstract: A system, method, and computer program product for booting a device are provided herein. The method includes the steps of synchronizing the device based on a downstream signal from a second device, receiving a software from the second device for booting on a reserved downstream channel of the second device, and storing the received first software in a volatile memory. The device does not pre-store the software in a non-volatile memory.Type: ApplicationFiled: September 27, 2016Publication date: January 19, 2017Applicant: Broadcom CorporationInventors: Eli ELMOALEM, David AVISHAI, Asaf KOREN
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Patent number: 9535680Abstract: A system, method, and computer program product for a flashless optical network unit (ONU) in a Passive Optical Network (PON) are provided herein. The method includes the steps of synchronizing on a downstream signal of an optical line terminal (OLT), receiving a first software from the OLT for its operation on a reserved downstream channel of the OLT, and storing the received first software in a volatile memory. The ONU does not pre-store the first software in a non-volatile memory.Type: GrantFiled: March 29, 2013Date of Patent: January 3, 2017Assignee: Broadcom CorporationInventors: Eli Elmoalem, David Avishai, Assaf Koren
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Patent number: 9258059Abstract: Methods, systems, and computer program products are provided for inserting the packet into a tail of a linked list buffer, and the linked list buffer includes a plurality of Buffer Descriptors (BD), a HEAD pointer pointing to a null Buffer Descriptor (NullBD) and a NULLBD pointer. The NULLBD pointer is switched to point to the NullBD and the HEAD pointer to point to a valid BD which represents a memory address of payload data in the packet to be transmitted. Upon transmission of the packet, the HEAD pointer is converted to point to the NullBD and the NULLBD pointer to point to the valid BD. The valid BD pointed by the NULLBD pointer is finally transferred to a free linked list buffer so that the NULLBD pointer points to no memory address.Type: GrantFiled: December 31, 2012Date of Patent: February 9, 2016Assignee: Broadcom CorporationInventors: Boaz Shahar, Oren Wolach, David Avishai
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Patent number: 9209897Abstract: A method for an adaptive forward error correction (FEC) in a passive optical network. The method comprises selecting an initial downstream FEC code to be applied on downstream data transmitted from an optical line terminal (OLT) to a plurality of optical network units (ONUs) of the PON; communicating the selected downstream FEC code to the plurality of ONUs; receiving at least one downstream bit error ratio (BER) value from at least one ONU of the plurality of ONUs, wherein the downstream BER value is measured respective to downstream data received at the at least one ONU; changing the selected downstream FEC code to a new downstream FEC code based on a plurality of downstream BER values measured by the at least one ONU; and communicating the new downstream FEC code to the plurality of ONUs.Type: GrantFiled: December 20, 2011Date of Patent: December 8, 2015Assignee: Broadcom CorporationInventors: Assaf Amitai, David Avishai, Eli Elmoalem
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Patent number: 8948594Abstract: A method for processing data flows of a plurality of passive optical network (PON) operating modes, the method is performed by an optical network unit (ONU). The method comprises processing upstream data flows of said plurality of PON operating modes; and processing downstream data flows of the plurality of PON operating modes. The plurality of PON operating modes include at least a Gigabit PON (GPON) mode, a broadband PON (BPON) mode, and an Ethernet PON (EPON).Type: GrantFiled: November 11, 2009Date of Patent: February 3, 2015Assignee: Broadcom CorporationInventors: Eliezer Weitz, Gil Levy, David Avishai, Eli Elmoalem, Moti Kurnick, Gal Sitton
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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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Publication number: 20140186053Abstract: Methods, systems, and computer program products are provided for inserting the packet into a tail of a linked list buffer, and the linked list buffer includes a plurality of Buffer Descriptors (BD), a HEAD pointer pointing to a null Buffer Descriptor (NullBD) and a NULLBD pointer. The NULLBD pointer is switched to point to the NullBD and the HEAD pointer to point to a valid BD which represents a memory address of payload data in the packet to be transmitted. Upon transmission of the packet, the HEAD pointer is converted to point to the NullBD and the NULLBD pointer to point to the valid BD. The valid BD pointed by the NULLBD pointer is finally transferred to a free linked list buffer so that the NULLBD pointer points to no memory address.Type: ApplicationFiled: December 31, 2012Publication date: July 3, 2014Applicant: Broadcom CorporationInventors: Boaz SHAHAR, Oren Wolach, David Avishai
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Patent number: 8555104Abstract: A frequency adapter for synchronizing data transfers between a low-frequency module and a high-frequency module connected to an internal bus. The frequency adapter includes a low-to-high synchronization unit for synchronizing data transfers from the low frequency module to the high-frequency module, wherein the low-to-high synchronization unit is clocked by a low frequency clock; and a high-to-low synchronization unit for synchronizing data transfers from the high frequency module to the low-frequency module, wherein the high-to-low synchronization unit is clocked by a low frequency clock.Type: GrantFiled: January 13, 2010Date of Patent: October 8, 2013Assignee: Broadcom CorporationInventors: Asaf Koren, David Avishai, Limor Yonatani, Yariv Aviram, Jacob Harel
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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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Publication number: 20130156420Abstract: A method for an adaptive forward error correction (FEC) in a passive optical network. The method comprises selecting an initial downstream FEC code to be applied on downstream data transmitted from an optical line terminal (OLT) to a plurality of optical network units (ONUs) of the PON; communicating the selected downstream FEC code to the plurality of ONUs; receiving at least one downstream bit error ratio (BER) value from at least one ONU of the plurality of ONUs, wherein the downstream BER value is measured respective to downstream data received at the at least one ONU; changing the selected downstream FEC code to a new downstream FEC code based on a plurality of downstream BER values measured by the at least one ONU; and communicating the new downstream FEC code to the plurality of ONUs.Type: ApplicationFiled: December 20, 2011Publication date: June 20, 2013Applicant: BROADLIGHT, LTDInventors: Assaf Amitai, David Avishai, Eli Elmoalem
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Patent number: 8437635Abstract: 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: January 21, 2010Date of Patent: May 7, 2013Assignee: Broadcom CorporationInventors: Amiad Dvir, Asaf Koren, David Avishai
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Patent number: 8243869Abstract: Burst mode clock and data recovery (BCDR) circuit and method capable of fast data recovery of passive optical network (PON) traffic. An over-sampled data stream is generated from an input burst data signal and a phase interpolator generates sampling clock signals using a reference clock and phase information. A phase estimation unit (PEU) determines a phase error in the over-sampled data streams; and a phase retrieval unit sets the phase interpolator with the respective phase information of the input burst data signal prior to reception of the input burst data signal.Type: GrantFiled: November 28, 2006Date of Patent: August 14, 2012Assignee: Broadlight Ltd.Inventors: Amiad Dvir, Raviv Weber, David Avishai, Alex Goldstein, Igor Elkanovich, Gal Sitton, Michael Balter
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Publication number: 20120093499Abstract: 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: ApplicationFiled: November 29, 2011Publication date: April 19, 2012Applicant: BROADLIGHT, LTD.Inventors: Amiad Dvir, Alex Goldstein, David Avishai
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Patent number: 8111985Abstract: An apparatus for performing an optical line analysis of continuous data signals. The apparatus comprise a phase position processor for computing a phase early/late indicator; a phase control code processor for computing a difference phase indicator; a frequency extractor for computing a low frequency jitter indicator; and a statistical calculator for computing a plurality of statistical measures regarding frequency and amplitude components of a jitter of an input continuous data signal, wherein the statistical measures are computed based on one of the phase early/late information indicator, the difference phase indicator, or the low frequency jitter indicator.Type: GrantFiled: May 1, 2009Date of Patent: February 7, 2012Assignee: Broadlight, Ltd.Inventors: Amiad Dvir, Alex Goldstein, David Avishai
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Publication number: 20110173481Abstract: A frequency adapter for synchronizing data transfers between a low-frequency module and a high-frequency module connected to an internal bus. The frequency adapter includes a low-to-high synchronization unit for synchronizing data transfers from the low frequency module to the high-frequency module, wherein the low-to-high synchronization unit is clocked by a low frequency clock; and a high-to-low synchronization unit for synchronizing data transfers from the high frequency module to the low-frequency module, wherein the high-to-low synchronization module is clocked by a low frequency clock.Type: ApplicationFiled: January 13, 2010Publication date: July 14, 2011Applicant: Broadlight, LTD.Inventors: Asaf Koren, David Avishai, Limor Yonatani, Yariv Aviram, Jacob Harel
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Patent number: 7925156Abstract: Apparatus and method to measure the quality of burst signals and to perform optical line diagnostics in and optical passive optical network (PON). Statistical information about phase noise (jitter), signal distortion, clock distortions, and any other effects present in burst signals is generated. The statistics are based on phase and bit-length distortions, direction and length of the effect as detected by a phase error detector integrated in a burst mode clock and data recovery (BCDR) circuit. The invention can be further adapted to perform optical line diagnostics to detect the root cause performance degradation and failures in the PON, thereby providing an optical layer supervision tool for monitoring the PON. The statistical information can be used to estimate the quality of service (QoS) per customer connected to the PON. In addition, the generated statistic information can be used to calibrate transmission parameters of optical network unit (ONU) transmitters.Type: GrantFiled: December 20, 2007Date of Patent: April 12, 2011Assignee: Broadlight, Ltd.Inventors: Raviv Weber, Amiad Dvir, Eli Elmoalem, Alex Goldstein, Igor Elkanovich, David Avishai
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Publication number: 20100067908Abstract: A method for processing data flows of a plurality of passive optical network (PON) operating modes, the method is performed by an optical network unit (ONU). The method comprises processing upstream data flows of said plurality of PON operating modes; and processing downstream data flows of the plurality of PON operating modes. The plurality of PON operating modes include at least a Gigabit PON (GPON) mode, a broadband PON (BPON) mode, and an Ethernet PON (EPON).Type: ApplicationFiled: November 11, 2009Publication date: March 18, 2010Applicant: BROADLIGHT, LTD.Inventors: Eliezer Weitz, Gil Levy, David Avishai, Eli Elmoalem, Moti Kurnick, Gal Sitton
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Patent number: 7643753Abstract: An enhanced passive optical network (PON) processor adapted to serve a plurality of PON applications is disclosed. The PON processor is a highly integrated communications processor that can operate in different PON modes including, but not limited to, a gigabit PON (GPON), a broadband PON (BPON), an Ethernet PON (EPON), or any combination thereof. In an embodiment of the present invention the provided PON is fabricated on a single integrated circuit (IC).Type: GrantFiled: September 29, 2005Date of Patent: January 5, 2010Assignee: Broadlight Ltd.Inventors: Eliezer Weitz, Gil Levy, David Avishai, Eli Elmoalem, Moti Kurnick, Gal Sitton
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Publication number: 20090274455Abstract: An apparatus for performing an optical line analysis of continuous data signals. The apparatus comprise a phase position processor for computing a phase early/late indicator; a phase control code processor for computing a difference phase indicator; a frequency extractor for computing a low frequency jitter indicator; and a statistical calculator for computing a plurality of statistical measures regarding frequency and amplitude components of a jitter of an input continuous data signal, wherein the statistical measures are computed based on one of the phase early/late information indicator, the difference phase indicator, or the low frequency jitter indicator.Type: ApplicationFiled: May 1, 2009Publication date: November 5, 2009Applicant: BROADLIGHT, LTD.Inventors: Amiad DVIR, Alex GOLDSTEIN, David AVISHAI