| Tellabs Petaluma, Inc. Patent applications |
| Patent application number | Title | Published |
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| 20100090739 | Method and Apparatus for Removing Narrow Pulses from a Clock Waveform - A method and a device for controlling and removing narrow pulses in a clock waveform using a delay function are disclosed. A circuit device includes three circuits wherein the first circuit is capable of generating an edge trigger signal in response to a waveform of an input signal and a waveform of an output signal. While the second circuit facilitates removing a narrow pulse from the waveform of the input signal, the third circuit is capable of generating a delayed output waveform having pulses greater than a predefined minimal pulse width. In one embodiment, the first, second, and third circuits are an exclusive OR gate, a delay circuit, and a D flip-flop, respectively. | 04-15-2010 |
| 20100074614 | METHOD AND APPARATUS FOR CORRECTING FAULTS IN A PASSIVE OPTICAL NETWORK - Component malfunctions in passive optical networks (PON) can increase bit error rates and decrease signal-to-noise ratio of communications signals. These faults may cause the receivers of the signals, either the optical line terminal (OLT) or optical network terminals (ONTs), to experience intermittent faults and/or may result in misinterpreted commands that disrupt other ONT's communication, resulting in a rogue ONT condition. Existing PON protocol detection methods may not detect these types of malfunctions. An embodiment of the present invention identifies faults in a PON by transmitting a test series of data patterns via an optical communications path from a first optical network node to a second optical network node. The test series is compared to an expected series of data patterns. An error rate may be calculated as a function of the differences between the test series and expected series. The error rate may be reported to identify faults in the PON. Through use of the embodiment, network faults can be identified and optionally automatically corrected, saving a network service provider from expending technician time and maintaining an operating state of the network. | 03-25-2010 |
| 20090324228 | ONT TEST UNIT - An Optical Network Terminal (ONT) simulator is provided. The ONT simulator includes one or more partially functional ONTs coupled to an Optical Line Termination (OLT) and an ONT/Optical network termination Management and Control Interface (ONT/OMCI) simulation utility. The ONTs receive test network traffic from the OLT and forward any OMCI traffic contained in the network traffic to the ONT/OMCI simulation utility. The ONT/OMCI simulation utility in turn simulates the operation of field-deployable ONT using the OMCI traffic. | 12-31-2009 |
| 20090232008 | SYSTEM FOR CONNECTING EQUIPMENT WITH A SERVICE PROVIDER, APPARATUS FOR FACILITATING DIAGNOSTIC AND/OR MANAGEMENT COMMUNICATION WITH SUCH EQUIPMENT, AND PROCEDURE FOR COMMUNICATING WITH SUCH EQUIPMENT - A system, apparatus, and procedure connects customer premises equipment with a service provider network and includes a first local area network, a second local area network, and a management interface device. The first local area network connects the customer premises equipment to the service provider network and is configured to transmit primary service signals to and receive primary service signals from the customer premises equipment. The second local area network connects the customer premises equipment to the service provider network via the management interface device and is configured to transmit diagnostic and/or management signals from the service provider network to the customer premises equipment through the management interface device and/or to receive diagnostic and/or management signals from the customer premises equipment and transmit those signals to the service provider network through the management interface device. These various functions can also be instructed to be performed by a software computer program or computer program product. | 09-17-2009 |
| 20090202026 | METHOD, NETWORK, APPARATUS AND COMPUTER PROGRAM FOR USING QUALIFYING CIRCUITS IN CLOCK AND DATA RECOVERY CIRCUITS - A method for performing CDR on a digital transmission, and an apparatus, system, and computer program that operate in accordance with the method. The method includes oversampling the digital transmission into oversampled data, detecting a frequency component of the oversampled data, qualifying a decision logic to select a sample of the oversampled data, and selecting at least one sample of the oversampled data using the decision logic. | 08-13-2009 |
| 20090154916 | Method and Apparatus for GPON GEM Error Correction Implementation - A method and a device of enhancing data integrity using hash function for data transmission over an optical network are disclosed. The device includes a hash circuit, a lookup circuit, a vector circuit, and a correcting circuit. The hash circuit is capable of performing a hash function and configured to generate a hash value in response to a value of header error correction (“HEC”) encapsulated in a gigabit passive optical network (“GPON”) frame. The lookup circuit is capable of obtaining a data entry from a lookup table in a memory in accordance with the hash value. While the vector circuit generates an error vector in response to the data entry, the correcting circuit corrects an error or errors in the header portion of a data structure encapsulated in the GPON frame. | 06-18-2009 |
| 20090080849 | BLANK PLATE FOR MANAGING CABLES - A blank or parking plate for managing cables, particularly fiber optic cables, having a planar base, removably securable to a chassis, and at least one resilient holder removably inserted through an aperture in the base, for securing and enclosing an end portion of a cable. The blank plate with at least one holder is arranged so as not to extend substantially within the chassis. The holder may secure a male cable connector end in substantially the same position and orientation that it will occupy when inserted into a female connector of an active circuit board, which replaces the blank plate. A distensible opening to an enclosure inside the holder may protect the cable end from dust or contact damage with foreign objects by defining an inner space behind an inlet for the cable, but no further opening serving as an outlet for the cable. | 03-26-2009 |
| 20090078835 | STATIC AND DYNAMIC CABLE MANAGEMENT BRACKET - A bracket is provided having a spacer connected to a first and second arms. The spacer has a proximate end and a distal end disposed apart from each other at a suitable distance. The first arm has a base end and a free end, the base end being connected to a first side of the proximate end of the spacer and the free end extending from the proximate end. The second arm has a base end and a free end, the base end connected to the proximate end, and the free arm extending from the proximate end. The first arm, the second arm, and the proximate end substantially form a ring having a gap between the free ends of the first and second arms. Another bracket is provided having a hook and a ring connected to a top of the hook, wherein the ring includes a gap formed therein. | 03-26-2009 |
| 20090074406 | METHOD FOR ALERTING USERS TO CONDITIONS AFFECTING NETWORK SERVICE - A method to alert users to network service conditions. The method includes detecting a network service condition, detecting an attempt to access at least one communication service of the network, and issuing an alert. A network for practicing the method includes at least one communication terminal and a network element that detects a network service condition, detects an attempt to access a communication service, and issues an alert of the network service condition. A network element operating in the network includes a communications interface, a processor, and a storage device for storing program instructions. The program instructions instruct the network element to detect an attempt to access a communication service and issue an alert of a network service condition. A computer program for controlling the network element includes code to detect an attempt to access a communication service and issue an alert. | 03-19-2009 |
| 20090067832 | Method and Apparatus for Verifying Signaling Values in an Optical Distribution Network - An apparatus and a method for verifying optical system performance using a signaling value test are disclosed. After instructing the first optical interface device and the second optical interface device to enter a verification mode, the first optical interface device sends first verification data to the second optical interface device via an optical communications network. In one embodiment, the first optical interface device is an optical line termination (“OLT”) and the second optical interface device is an optical network terminal (“ONT”). Upon composing the first reply message in response to content received by the second optical interface in accordance with the first verification data, the second optical interface device forwards the first reply message to the first optical interface device. | 03-12-2009 |
| 20090067437 | METHODS, SYSTEMS AND COMPUTER PROGRAM PRODUCTS FOR MANAGING ATM ETHERNET FLOWS - Methods, systems and computer program products are provided for associating multiple Ethernet flows between a transceiver/uplink endpoint and a subscriber endpoint over an underlying ATM VCC including generating an ATM VCC record having a first endpoint identifier corresponding to a subscriber device such as a passive optical network (“PON”) or digital subscriber line (“DSL”) device and a second endpoint identifier corresponding to a transceiver card, such as a GigE card. | 03-12-2009 |
| 20090060495 | INITIATING DIAGNOSTICS FROM ANY USER COMMUNICATION TERMINAL - A method for initiating diagnostic operations for a communication network, and devices, a network, and computer-readable storage medium storing control logic, that operate in accordance with the method. A test set device is communicatively coupled to a test head. The test set device provides access information to the test head, the access information comprising a diagnostic code indicating a diagnostic operation to be performed. The test head is communicatively coupled to a network. The test head provides the diagnostic code to the network device and sends a response from the network device to the test set device, the response indicating a result of performing the diagnostic operation. In this manner, a field technician can initiate diagnostics without the intervention of another technician, thereby reducing manpower required to troubleshoot a problem and improve troubleshooting turnaround. | 03-05-2009 |
| 20090052891 | Method and Apparatus for Reducing Error Rate During Data Transmission in an Optical Communications Network - An apparatus and a method of enhancing data integrity for data transmission over an optical network are disclosed. Upon detecting a low performance condition associated to the optical communications network, an error correcting code (“ECC”) device is activated. The ECC device inserts the ECC to a data stream to form an ECC data stream. Once the ECC data stream reaches to the destination, the ECC device corrects any errors incurred during the transmission, and removes the ECC from the ECC data stream. It should be noted that the ECC device can also be activated by a request from a network operator. | 02-26-2009 |
| 20090016721 | Method and apparatus for enhanced power diagnostics - Example embodiments of the invention provide a system for monitoring a battery backup unit (BBU) deployed in a network. The BBU typically communicates in a unidirectional manner with an external device, such as an Optical Network Terminal (ONT), is able to communicate in a bidirectional manner. The useful improvements of communicating in a bidirectional manner include installation integrity, real-time troubleshooting, and software upgrades. Moreover, the BBU is able to monitor an output power or status information of a primary power source, such as an Optical Network Terminal (ONT) Power Supply Unit (OPSU). Specifically, example embodiments allow the BBU to be enabled in an event of a loss of primary power to the ONT. The BBU may communicate in a bidirectional manner between the BBU and the device external from the BBU to receive status request signals and provide information responsive thereto about the BBU, including information about the battery. | 01-15-2009 |
| 20090015120 | HEAT DISSIPATION DEVICE FOR ELECTRONICS CABINET - A cabinet includes a housing for housing equipment, and a heat dissipation device for dissipating heat in the housing. At least a part of the heat dissipation device is formed integrally with at least a part of the housing. The heat dissipation device includes a fluid passageway adjacent the housing. The fluid passageway includes first and second surface portions, together defining an enclosing structure surrounding an interior space, and first and second openings in the enclosing structure. The first surface portion defines a boundary between the interior space and a region containing the equipment. The first and second openings are provided in respective locations not on the first surface portion. Fluid is caused to flow into the first opening, through the interior space of the enclosing structure, and out of the second opening by means of convection, dissipating heat from the first region. | 01-15-2009 |
| 20080292312 | Method and apparatus for determining optical path attenuation between passive optical network nodes - A method and apparatus of determining attenuation of an optical path between two optical networks may include using a communications traffic signal without interrupting service or requiring additional external test equipment. A transmit optical network node is configured to measure the transmit power of a transmitted optical signal. A receive optical network node is configured to measure the transmit power of the same transmitted optical signal. A calculation unit calculates the power differential of a transmit and receive optical power. A determination unit is configured to determine optical path attenuation as a function of the optical path distance between the transmit and receive optical network nodes. A reporting unit reports data indicative of the optical path attenuation. The optical path attenuation may be monitored periodically, on demand, on an event basis and may report an alert if the attenuation measurement exceeds a preconfigured threshold. The data may be used to proactively monitor quality of an in-service passive optical network by determining the optical path attenuation. | 11-27-2008 |
