Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 8145054 | Single-fiber protection in telecommunications networks A solution for detecting and recovering from a failure in a protected single-fiber passive optical network. A detector is used to detect the degradation in power level of optical signals. Furthermore, the invention discloses a variable symmetric split ratio approach... | 03/27/2012 |
| 8116623 | Multi-ring network operating method and system Provided is a multi-ring network operating method of cross-connecting at least two ring networks, the method including connecting an input working ring and an input protection ring of a ring network to an output working ring and an output protection ring of another ... | 02/14/2012 |
| 8090256 | Optical network architectures and optical communication schemes The present invention provides optical network methods and systems. In one example, a method for handling packets in a node coupled to a ring and star subnetwork may include (a) receiving in the given node a data packet on the ring subnetwork, (b) detecting a failur... | 01/03/2012 |
| 7945157 | Ship with a data network A ship includes a network, integrating services for security and control services and/or for multimedia and infotainment services on board the ship. The service-integrating network includes services for security-related systems as well as services for non-security-r... | 05/17/2011 |
| 7933517 | Single-fiber protection in telecommunications networks A solution for detecting and recovering from a failure in a protected single-fiber passive optical network. A detector is used to detect the degradation in power level of optical signals. Furthermore, the invention discloses a variable symmetric split ratio approach... | 04/26/2011 |
| 7925155 | Transmitting broadcast signals in a communication network In one embodiment, a facilitating signal broadcasting includes receiving a first copy of a signal at a first selector of a first headend, where the first copy is received through a first receive pipe of a first ring. A second copy of the signal is received at the fi... | 04/12/2011 |
| 7920786 | Single-fiber protection in telecommunications networks A solution for detecting and recovering from a failure in a protected single-fiber passive optical network. A detector is used to detect the degradation in power level of optical signals. Furthermore, the invention discloses a variable symmetric split ratio approach... | 04/05/2011 |
| 7856182 | Optical CWDM-system The present invention relates to a system for optical transmission of information over a multiplexed logical ring structure comprising a number of nodes, of which at least one is a master node, as stated in the independent claim 1. Said ring structure is a co... | 12/21/2010 |
| 7664391 | Method and system for shared optical regeneration An optical network includes an optical ring that is capable of transmitting, between two or more nodes, a plurality of working traffic streams that include traffic transmitted in one of a plurality of wavelengths. A node is capable of transmitting, in a first wavele... | 02/16/2010 |
| 7639944 | Method for protecting cross-ring service in optical network A method for protecting a cross-ring service in an optical network includes the steps of: determining whether a configured working path crosses different rings; and in the case that the working path crosses different rings, establishing a cross-ring protection path ... | 12/29/2009 |
| 7551851 | System and method for bypassing a faulty node in an optical network A system and methods are provided for communicating optical signals in a multipath optical network, such as ring network architecture. The system and methods provided are operable to bypass a faulty node in the optical network under various conditions. Faulty nodes ... | 06/23/2009 |
| 7499647 | Fully protected broadcast and select all optical network An all optical network for optical signal traffic provides at least a first ring with at least a first clockwise fiber, a second counter-clockwise fiber and a plurality of network nodes. Each node has at least a WDM transponder that with a line-side transmitter and ... | 03/03/2009 |
| 7466913 | Method for WDM optical networks including alternate routes for fault recovery A procedure for designing WDM optical networks provides both working circuits and protection circuits for carrying traffic demands between node pairs. The protection circuits are activated for the purpose of network recovery in case of a fault on a working circuit. ... | 12/16/2008 |
| 7433593 | Switching algorithm for optical fiber networks A method, system and egress switching node for maintaining a network connection in an optical network reduces the number of spans needed for reestablishing a network connection. The invention learns which channels are used by the network connection and propagates su... | 10/07/2008 |
| 7418203 | Diagnosis method for standby system of optical ring network An object of the invention is to provide a diagnosis method for standby systems in an optical ring network having a redundant configuration, which can confirm normal states of standby systems in all optical transmission apparatuses on the network, even during operat... | 08/26/2008 |
| 7409154 | System and method for a protected optical access ring network An optical access network employs a ring topology in which connections between the network units and between the network units and the optical line terminal are via a protection switch. The protection switch monitors connections from the optical network units to det... | 08/05/2008 |
| 7400828 | Fault protection in networks A network is maintained functional in the presence of a wide range of faults, including physical fiber cuts, transmission impairments creating signal quality degradation, and failure of equipment modules, for example, transceivers, using a common control and backup ... | 07/15/2008 |
| 7400829 | Transmission apparatus and path selection method of a transmission apparatus A transmission apparatus that receives an optical signal by selecting any one of a plurality of provided optical signal transmission paths through protection control is configured to include a plurality of optical signal outputting sections that output the optical s... | 07/15/2008 |
| 7397760 | Transmission apparatus A transmission apparatus including: a plurality of asynchronous network interface units each having an asynchronous network termination unit for inputting/outputting a packet from/to an asynchronous networks and a mapping unit for converting the packet into a first ... | 07/08/2008 |
| 7388189 | System and method for connecting electrical devices using fiber optic serial communication A system and method for communicating between serially connected electrical devices of a network is provided. The network includes a series of electrical devices, and fiber optic connectors between electrical devices of the series of electrical devices forming a clo... | 06/17/2008 |
| 7369769 | Ethernet passive optical network ring and its method of authorization and collision detection An Ethernet passive optical network (EPON) ring for providing protection against fiber failures. The optical network unit (ONU) is coupled to the ring fiber by a three-port passive optical splitting module that has three two-way optical passages. By the three two-wa... | 05/06/2008 |
| 7366410 | Signal relay apparatus of optical communication system The signal relay apparatus has a plurality of photoelectric converters which convert an optical signal input from an electronic equipment (A-C) into an electric signal and outputs the same to the photoelectric converter (21-24), and which converts an e... | 04/29/2008 |
| 7362974 | Method for planning or provisioning data transport networks A tool for static or dynamic planning of a WDM network with dedicated protection. The WDM network is represented by a layered graph having image nodes for each node of the network and horizontal arcs for each link of the network, so as to replicate in each layer the... | 04/22/2008 |
| 7356259 | Optical bypass upgrade configuration Optical bypass node upgrade configurations are disclosed: (1) a configuration where optical taps are pre-positioned in wavelength division multiplex (WDM) line systems terminating at optical-electrical-optical (OEO) core switching nodes to allow for future upgrade o... | 04/08/2008 |
| 7352966 | Method and apparatus for capacity-efficient restoration in an optical communication system A method and system provide capacity-efficient restoration within an optical fiber communication system. The system includes a plurality of nodes each interconnected by optical fibers. Each optical fiber connection between nodes includes at least three channel group... | 04/01/2008 |
| 7343093 | Protected bidirectional WDM network An optical WDM ring network includes at least two add/drop nodes connected in a ring path. The ring path comprises only a single optical fiber arranged for bidirectional traffic between the nodes. A 2×2 switch is used in one of the add/drop nodes for switching sign... | 03/11/2008 |
| 7330650 | Bi-directional wavelength division multiplexing self-healing optical ring network A bi-directional wavelength division multiplexing self-healing optical ring network is disclosed, in which N optical signals are processed at both first and second ring network so that a protection switch mechanism is performed when a link failure occurs in any one ... | 02/12/2008 |
| 7319817 | System for transparent node for WDM shared “virtual ring” networks A system and method for a transparent WDM metro ring architecture in which optics enables simultaneous provisioning of dedicated wavelengths for high-end user terminals, while low-end user terminals share wavelengths on “virtual rings”. All wavelengths are sourc... | 01/15/2008 |
| 7310478 | Communication system with hybrid protection at multiple OSI layers A communication system couples communication devices using optical switches and links. The optical switches provide OSI Layer 1 restoration in response to a fault. The communication devices provide OSI layer 2/3 restoration in response to the fault after OSI Layer 1... | 12/18/2007 |
| 7302176 | Optical network A medium-scale IP telecommunications network is configured in a low-cost optical network with good reliability and expandability. A physical configuration example has a center node 2-1 and eight local nodes 2-11 through 2-18... | 11/27/2007 |
| 7298971 | Hybrid optical ring-mesh protection in a communication system A communication system includes nodes that exchange communications over optical fibers. In the event of a fault, the nodes implement ring protection for a first set of the communications and implement mesh protection for a second set of the communications. Ring prot... | 11/20/2007 |
| 7295776 | Optical LAN device An ring type optical LAN device includes a master node and a plurality of slave nodes that are interconnected by an optical fiber cable. A plurality of optical bypass transmission lines are provided in correspondence with each one of the slave nodes. Each of the opt... | 11/13/2007 |
| 7283739 | Multiple subnets in an optical ring network and method An optical network includes an optical ring and at least three subnets. Each subnet includes a plurality of add/drop nodes coupled to the optical ring. The add/drop nodes are operable to passively add a first traffic stream in a first direction on the optical ring a... | 10/16/2007 |
| 7283740 | Optical ring network with optical subnets and method An optical network includes a plurality of subnets. The subnets each include a plurality of add/drop nodes coupled to the optical ring and operable to passively add and drop traffic to and from the optical ring. The network further includes a plurality of gateway no... | 10/16/2007 |
| 7283462 | Multiple bundle identification for calculation of a network protect path Consistent with a feature of the present invention, protection and working routes are determined by assigning administrative weight values to each route in a network. The administrative weight value of a route can correspond to the physical distance associated with ... | 10/16/2007 |
| 7277631 | Method and apparatus for processing protection switching mechanism in optical channel shared protection rings A method for merging protection switching messages in an optical network enables a control of the amount of message bandwidth used for sending protection switching messages. A method for performing protection switching in an optical network does so in an optimal man... | 10/02/2007 |
| 7277632 | Method for assigning wavelengths in wavelength division multiplexing ring communication network A method for assigning a predetermined wavelength between two different nodes in a wavelength division multiplexing (WDM) ring communication network that has an N number of nodes and at least one pair of optical fibers sequentially connecting the N number of nodes i... | 10/02/2007 |
| 7272307 | Virtual protection channel for fiber optic ring network A single, normally inactive, protection ring, provides protection against a working channel failure in a fiber optic ring network. The protection channel is established and put into operation by a series of steps that are triggered by the detection of signal degrada... | 09/18/2007 |
| 7269346 | Optical automatic protection switching mechanism for optical channel shared protection rings A method for performing protection switching in an optical network does so in an optimal manner by performing the protection switching actions in the various nodes of a protection path in parallel rather than in sequence. To do so, a channel failure message is trans... | 09/11/2007 |
| 7260325 | Network component for an optical network comprising an emergency operation function, especially for an optical network in ring topology A network component (3d) for an optical network (1) is described, including a coupling device (2; 4, 5) for optical coupling of the network component (3d) to the optical network (1), the coupling device (2; 4, 5 | 08/21/2007 |
