Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8165466 | Network operating system with topology autodiscovery The network operating system includes an embedded platform for controlling operation of an agile optical network at the physical layer level. At the module embedded level, each module (card-pack) is provided with an embedded controller EC that monitors and control o... | 04/24/2012 |
| 8116625 | Methods and systems for detecting small span loss changes in fiber optic networks The present disclosure provides methods and systems for detecting small span loss changes in fiber optic networks. The present invention utilizes existing equipment without additional hardware to provide span loss measurements in a highly accurate manner. In an exem... | 02/14/2012 |
| 8073326 | Optical polarization division multiplexing in optical communication Devices, systems and techniques for optical communication are provided based on polarization division multiplexing (PDM) to use an optical monitor channel at a distinct optical monitor wavelength to monitor optical polarization fluctuation and polarization mode disp... | 12/06/2011 |
| 7957643 | Method and apparatus for automatically controlling optical signal power in optical transmission systems A method and apparatus for controlling the power level of an optical signal includes detecting the loss of a supervisory signal counter-propagating in an optical fiber. ... | 06/07/2011 |
| 7903969 | Link connectivity verification method A link connectivity verification message to recognize a physical link connection state is transmitted from the WDM to the PXC on a C-plane. The PXC transmits a link connectivity verification ACK message including information representing a physical link connection s... | 03/08/2011 |
| 7792425 | Network data transmission and diagnostic methods using out-of-band data Out-of-band data communication of diagnostic and/or configuration data is performed using transceivers in a data or communication network. A light beam or other carrier is modulated with high-speed data and out-of-band diagnostic and/or configuration data to create ... | 09/07/2010 |
| 7747165 | Network operating system with topology autodiscovery The network operating system includes an embedded platform for controlling operation of an agile optical network at the physical layer level. At the module embedded level, each module (card-pack) is provided with an embedded controller EC that monitors and control o... | 06/29/2010 |
| 7630634 | Method and apparatus for managing an optical signal A node for managing an optical signal includes a first system optics card for providing channels to be transported over a first optical transport link and receives channels from a second optical transport link. Channels received over the second optical transport lin... | 12/08/2009 |
| 7580631 | Optical transmission device for controlling optical level of transmission signal in optical transmission system An optical transmission device includes: an attenuator that attenuates an optical signal from an adjacent optical transmission device; an optical element that is arranged downstream of the attenuator; a detector that detects a change in a characteristic of a transmi... | 08/25/2009 |
| 7546035 | Method for conveying management information The invention relates to a method for conveying management information in a WDM system from a number of wavelength converters to a central management unit, wherein a management information signal is superimposed on the WDM signal from the respective wavelength conve... | 06/09/2009 |
| 7509047 | System and method for subcarrier modulation in ISM band as supervisory channel Apparatus and method for transmitting a supervisory signal for optical network applications. The apparatus includes a subcarrier transmission system configured to receive a first supervisory signal and output a second supervisory signal, and an electrical-to-optical... | 03/24/2009 |
| 7471898 | Device and method for optical supervisory channel framing in optical transport network system Disclosed is a device and method for optical supervisory channel framing in an optical transport network system including at least one of an optical transmission section, an optical multiplex section, and an optical channel section. A maintenance signal is generated... | 12/30/2008 |
| 7440700 | Apparatus for testing performance of optical transceiver Provided is an apparatus for testing the performance of an optical transceiver by referencing various performance clocks provided by an OTU2 signal connection transceiver and an STM-64/OC-192 signal. The apparatus for testing performance of an optical transceiver in... | 10/21/2008 |
| 7437070 | Submarine observation apparatus and submarine observation system In each of a plurality of submarine observation apparatus (1 to n), a branching unit (63) branches fixed-wavelength light (λ1) from an incoming wavelength-multiplexed light signal. An observation signal modulating unit (64) modulates the... | 10/14/2008 |
| 7433371 | Optical cross connect apparatus and network An optical signal connection apparatus includes first and second routers configured to handle optical signals and electrical signals. A first node includes a first port coupled to the first router and is configured to handle a first type of optical signals associate... | 10/07/2008 |
| 7426347 | Shared optical performance monitoring An apparatus for shared optical performance monitoring (OPM) is provided. A wavelength sensitive device receives light at an input port and routes it wavelength selectively to a set of output ports. To perform optical performance monitoring on the output ports, a mo... | 09/16/2008 |
| 7421199 | System and method for subcarrier modulation as supervisory channel An apparatus and method for processing a supervisory signal for optical network applications. The apparatus includes a subcarrier transmission system configured to receive a first supervisory signal and output a second supervisory signal, and an electrical-to-optica... | 09/02/2008 |
| 7418212 | Electrical detection of optical symbols A system and method for detecting digital symbols carried in a received optical signal. The system comprises a functional element operative to receive a stream of samples of an electrical signal derived from the received optical signal and to evaluate a non-linear f... | 08/26/2008 |
| 7412166 | Pilot tones for optical signal wavelength identification and power measurement A method of optical communication includes providing a plurality of optical signals each associated with a distinct channel of a composite optical signal. A unique pilot tone signature is superimposed on each channel. The spectral composition of each signature inclu... | 08/12/2008 |
| 7409155 | Optical transmission system In an optical transmission system: a first unit generates a first optical supervisory signal being arranged on the shorter-wavelength side of main signals and containing information for determining continuity of an optical transmission line and a second optical supe... | 08/05/2008 |
| 7409156 | System and method for a supervisory signal modulation scheme using variable optical attenuators System and method for supervisory signal modulation on Wavelength Division Multiplex (WDM) channels wherein variable optical attenuators (VOAs) are used for amplitude modulation of the supervisory signal. Alternatively, at least two spectral bands of the supervisory... | 08/05/2008 |
| 7403712 | Matrix time division multiplex (MTDM) interrogation Embodiments of present system encompass: a plurality of laser sources that produce a plurality of respectively different optical wavelengths; a matrix switch having a plurality of inputs operatively coupled to the plurality of laser sources, each of the plurality of... | 07/22/2008 |
| 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 |
| 7400440 | Method and system for determining gain for an optical signal A method for determining gain for an optical signal includes measuring a first power level that is an output power level of an optical signal at a first optical node, communicating the optical signal to a second optical node, and communicating the first power level ... | 07/15/2008 |
| 7389045 | Apparatus and method for monitoring and compensating an optical signal Optical communication apparatuses and optical communication methods are provided. According to one aspect, an optical communication apparatus includes a communication path configured to communicate a first signal; a signal generator configured to provide a second si... | 06/17/2008 |
| 7376358 | Location specific optical monitoring An optical spike is generated at an arbitrarily selected location within an arbitrary optical link. The optical spike is generated by deriving a spike signal having a plurality of components, and launching the spike signal into the a transmitter end of the optical l... | 05/20/2008 |
| 7362972 | Laser transmitter capable of transmitting line data and supervisory information at a plurality of data rates An optical transmitter for sending supervisory data signals and line data signals as a composite optical signal through an optical fiber link is disclosed. The transmitter may take the form of a transmitter, transceiver or transponder and includes circuitry for rece... | 04/22/2008 |
| 7356127 | Global digital measurement device A digital wideband node (DWN) (28, 48) is coupled to a remote terminal (RT) (22, 42) that in turn is coupled to a subscriber's telephone line (26, 46). The DWN (28, 48) is configured to (1) pass a subscriber's telephone number signal dire... | 04/08/2008 |
| 7349344 | System and method for performing subscriber loop testing in an optical network An access network includes a test system controller that provides a test request in Signaling Network Management Protocol (SNMP) messages to an element management system. A network gateway, in conjunction with the element management system, provides test commands to... | 03/25/2008 |
| 7340164 | Optical WDM transmission system An optical wavelength division multiplex transmission system (1) for transmitting optical signals (S) on a plurality of wavelength channels has a transmitting terminal (2) and a receiving terminal (3) interconnected by a transmission line (5 | 03/04/2008 |
| 7336901 | Reconfigurable optical add-drop multiplexers employing optical multiplex section shared protection A reconfigurable optical add-drop multiplexer is disclosed that enables Optical Multiplex Section (OMS) shared protection rings. The ROADM comprises a first optical supervisory module, coupled to a first amplifier module, which in turn is coupled to a first broadcas... | 02/26/2008 |
| 7330651 | Optical amplifying apparatus, optical transmission system and method of adjusting optical transmission loss An optical amplifying apparatus connected mutually through an optical transmission line includes an optical detecting unit for detecting an input level of an amplified spontaneous emission (ASE) light, an optical amplifying unit for amplifying a signal light, and an... | 02/12/2008 |
| 7327954 | Optical signaling to share active channel information A method for optical supervisory signaling includes determining a wavelength channel status (WCS) value, a wavelength channel failure (WCF) value, and a wavelength channel lit (WCL) value for each one of multiple data channels services by an optical communication no... | 02/05/2008 |
| 7324815 | Remote interaction with a wireless device resident diagnostic interface across a wireless network A system, method, and program for remotely interacting with a diagnostic interface resident on wireless computer devices. The wireless device provides an accessible diagnostic interface that allows reads and/or writes to device resident diagnostic data and tools. Th... | 01/29/2008 |
| 7317720 | Signal transmission system A signal transmission system has a master node and plural slave nodes performing data transmission with the master node. The master node has a serial-to-parallel converter for converting a serial data signal from each slave node into a parallel data signal. Each sla... | 01/08/2008 |
| 7313103 | Method and apparatus for interactive communication between half-duplex and full-duplex systems A communication system (100) includes a first communication unit (101, 102, 103, 104) capable of communicating over a full-duplex persistent-connection link provided by a full-duplex network (105) and a second communication unit (151, 152... | 12/25/2007 |
| 7308201 | Optical communication system A node is provided in an optical communications network that utilizes a first set of add/drop filter elements for extracting and combining optical signals that are carried on wavelength division multiplexed channels in a first wavelength band. Additionally, an extra... | 12/11/2007 |
| 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 |
| 7295775 | Method and a system for monitoring the transmission of optical signals The present invention relates to a method of monitoring the transmission of optical signals including a step of inserting a monitoring signal (S) more particularly suited to monitoring the quality of service. During the transmission of optical signals each carried b... | 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 |
