| BROADLIGHT, LTD. Patent applications |
| Patent application number | Title | Published |
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| 20120093499 | APPARATUS AND METHOD FOR PERFORMING LINE ANALYSIS OF CONTINUOUS DATA SIGNALS - 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. | 04-19-2012 |
| 20120017071 | Apparatus and Method Thereof for Reliable Booting from NAND Flash Memory - An apparatus for enabling booting from a NAND flash memory comprises a NAND flash controller connected to the NAND flash memory, wherein the NAND flasher memory is configured to include at least a starter section for storing boot code, the starter section includes a predefined number of blocks to store copies of the boot code duplicated in a configurable number of blocks; and a fetch emulator for fetching a valid and complete starter block that includes the boot code. | 01-19-2012 |
| 20110318002 | PASSIVE OPTICAL NETWORK PROCESSOR WITH A PROGRAMMABLE DATA PATH - A passive optical network (PON) processor comprises a packet processor for processing packets belonging to a certain flow through a plurality of processing stages of a programmable data-path; a microprocessor-data for performing one or more user-defined functions in the programmable data-path on designated packets belonging to the certain flow, wherein packets of respective flows to be processed by the microprocessor-data are designated in a flow table; a microprocessor-control for managing connections handled by the PON processor; a data-path bus for connecting the packet processor and the microprocessor-data, wherein the designated packets are transferred between the packet processor and the microprocessor-data on the data-path bus; and a control-path bus for connecting the packet processor and the microprocessor-control. | 12-29-2011 |
| 20110280568 | TECHNIQUES FOR DETECTING OPTICAL FAULTS IN PASSIVE OPTICAL NETWORKS - 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. | 11-17-2011 |
| 20110176806 | OPTICAL BURST RECEIVER WITH A CONFIGURABLE AC AND DC COUPLING INTERFACE - 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. | 07-21-2011 |
| 20110173481 | FREQUENCY ADAPTER UTILIZED IN HIGH-SPEED INTERNAL BUSES - 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. | 07-14-2011 |
| 20100166419 | TECHNIQUES FOR PROTECTING PASSIVE OPTICAL NETWORKS - 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. | 07-01-2010 |
| 20100098419 | GIGABIT PASSIVE OPTICAL NETWORK (GPON) RESIDENTIAL GATEWAY - A gigabit passive optical network (GPON) residential gateway comprising a microprocessor for at least processing packets including voice data and packets including video data; dual packet processors for performing GPON and residential gateway processing tasks; a plurality of Ethernet media access control (MAC) adapters for interfacing with a plurality of subscriber devices; a GPON MAC adapter for interfacing with an optical line terminal (OLT) of the GPON; and a digital signal processor (DSP) for processing voice signals. | 04-22-2010 |
| 20100098076 | METHOD FOR MULTICASTING OF PACKETS IN PON RESIDENTIAL GATEWAYS - A method for multicasting packets in a passive optical network (PON) residential gateway. The method comprises storing a payload portion of an input packet in a memory; duplicating a header of the input packet to create duplicate headers as the number of destination end-point devices; modifying each of the duplicated header to uniquely designate an output interface of an Ethernet medium access (MAC) adapter coupled to at least one of the destination endpoint devices; passing to the Ethernet MAC adapter its respective modified header together with a pointer to a location of the payload portion in the memory; generating a multicast packet by retrieving the payload portion from the memory and attaching the modified header to the payload portion; and transmitting the multicast packet to the destination endpoint device coupled to the Ethernet MAC adapter. | 04-22-2010 |
| 20100067908 | Enhanced Passive Optical Network (PON) Processor - 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). | 03-18-2010 |
| 20090323715 | PROTOCOL FOR NATIVE SERVICE TRANSPORT OVER POINT-TO-MULTIPOINT PASSIVE OPTICAL NETWORKS - A method for information transfer allowing for native transfer of voice, data, and any other digital service information over a passive optical network, comprising; the LT transmitting downstream in serially ordered frames broadcast to all of the NT's at a fixed interval; the NT's transmitting upstream in serially ordered frames, said frames being divided into serially ordered time slots, at most one NT transmitting information for at most one service type in each slot; the LT and the NT's exchanging management information, and the LT and the NT's natively transporting service information to each other in both the upstream and downstream directions, according to said management information exchanged between the LT and the NT's. | 12-31-2009 |
| 20090274455 | APPARATUS AND METHOD FOR PERFORMING LINE ANALYSIS OF CONTINUOUS DATA SIGNALS - 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. | 11-05-2009 |
