Quotables
"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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 |
| 7925158 | Testing optically amplified links with time-division multiplexed test signals A time division multiplexed measurement technique is used for spectral measurements in active wavelength division multiplexed loaded optical links, and offers instantaneous real-time correlation of performance and spectral parameters of the link, which is important ... | 04/12/2011 |
| 7440694 | SONET outage impact measurement technique An accurate method of reporting “minutes of outage” for a SONET facility applies a set of business rules and hierarchical definitions to delete certain minutes that would otherwise be counted as “outages”. In particular, any outage minutes reported for a net... | 10/21/2008 |
| 7394824 | System and method of transmitting variable length packet by sequential allocation of permission and monitoring response detection time period In a system including a parent station and a plurality of child stations connected only to the parent station, which is unable to detect a response among the plurality of child stations, the parent station includes a transmission permission sequential allocation mec... | 07/01/2008 |
| 7362799 | Method and apparatus for communication signal resolution Embodiments of the present invention provide methods and apparatuses for determining a parameter value for each of a plurality of communication signals received concurrently as a composite signal. The parameter value of each communication signal is within a correspo... | 04/22/2008 |
| 7349505 | Relayed communication with versatile self-interference cancellation Methods, apparatuses, and systems are presented for providing self-interference cancellation in two-way relayed electromagnetic communication between a first and a second device through a relay station, involving retrofitting existing equipment comprising a transmit... | 03/25/2008 |
| 7336930 | Interference cancellation in wireless relaying networks In accordance with the invention, signal information representative of a first set of information to be transmitted more than one time over at least one link is stored as a priori known signal information. This could be previously received and/or, detected informati... | 02/26/2008 |
| 7313712 | Link power saving state Disclosed are embodiments of a method, apparatus and system for a low power state for a point-to-point link. During the low power state, the signal on both conductors of a differential transmit pair are driven to electrical idle. Analog activity detectors are enable... | 12/25/2007 |
| 7292547 | Device and method for nodal multiple access into communications channels A nodal division multiple access technique for multiple access to a communications channel such as a satellite transponder. The present invention provides multiple access into a communications channel where each accessing site utilizes one signal from a composite am... | 11/06/2007 |
| 7228073 | Optical signal transmission device An optical signal transmission device for transmitting phase information of optical signals is provided. The device includes a multiplexing formatted optical signal generator arranged to generate multiplexing formatted optical signals. The device also includes an op... | 06/05/2007 |
| 7221285 | System and method for providing an improved standby mode for infrared data transceivers A System and Method for Providing an Improved Standby Mode for Infrared Data Transceivers is disclosed. Standby Mode for Infrared Data Transceivers. The device and system of the present invention includes a discovery signal receiver and power actuator module that co... | 05/22/2007 |
| 7177419 | Methods and apparatuses for detecting and reducing non-linear echo in a multi-carrier communication system Apparatuses, systems, and methods for a multi-carrier communication system that detects and reduces an echo from a non-linear element present on the transmission medium. In an embodiment, a training period is established between a first transmitter-receiver device a... | 02/13/2007 |
| 7174105 | All-optical time division multiplexing system An all-optical time division multiplexing system, comprising: first divider having first input and a first plurality of outputs for receiving input signals at the first input and directing the input signals to each of the outputs o... | 02/06/2007 |
| 7167650 | Method and apparatus for demultiplexing high bit rate optical signals on dense wavelength grid A method and an apparatus are provided to demultiplex an optical signal having a plurality of channels at a predetermined channel spacing having demultiplexing means with a frequency spacing larger than the predetermined channel spacing for receiving the optical sig... | 01/23/2007 |
| 7161964 | Reconfigurable ADD/DROP, multiplexer/demultiplexer using a transceiver with loop-back function A reconfigurable ADD/DROP multiplexer/demultiplexer apparatus is implemented by connecting a multiplexer/demultiplexer apparatus to a serializer/deserializer (SERDES) apparatus having a loop-back capability. By selectively activating the loop-back functionality of t... | 01/09/2007 |
| 7126408 | Method and apparatus for receiving high-speed signals with low latency An apparatus and method for receiving high-speed signals having a wide common-mode range with low input-to-output latency. In one embodiment, the receiver includes an integrator to accumulate charge in accordance with an input signal during an integration time inter... | 10/24/2006 |
| 7099307 | Automated cross-box and methods for using an automated cross-box Systems and methods for remotely switching telecommunication access sources. Exemplary systems include a communication device that is operable to receive a selection, and a micro electro-mechanical cross-connect that is, based on the selection, operable to route a s... | 08/29/2006 |
| 7092629 | Time-division and wave-division multiplexed link for use in a service area network A data transmission system employs a method of aligning transmission lanes with reception lanes in a multiplexing arrangement. A plurality of control symbols and lane identifiers are transmitted on each of the transmission lanes. The transmission lanes are divided i... | 08/15/2006 |
| 7085281 | Method and system for processing upstream packets of an optical network A protocol for an optical network can control the time at which subscriber optical interfaces of an optical network are permitted to transmit data to a transceiver node. The protocol can prevent collisions of upstream transmissions between the subscriber optical int... | 08/01/2006 |
| 7035544 | Identification of related communications channels in a wavelength division multiplexed optical network Channels in an optical network that carry optical signals are evaluated using signal characteristics and suitable channels are compared to identify the channels that represent a single conversation using matching criteria. In another aspect, only channels that carry... | 04/25/2006 |
| 6965262 | Method and apparatus for receiving high speed signals with low latency An apparatus and method for receiving high-speed signals having a wide common-mode range with low input-to-output latency. In one embodiment, the receiver includes an integrator to accumulate charge in accordance with an input signal during an integration time inter... | 11/15/2005 |
| 6907093 | Method and apparatus for relayed communication using band-pass signals for self-interference cancellation Self-interference cancellation is provided in two-way relayed electromagnetic communication between a first device and a second device through a relay station wherein a representation of a relayed composite signal above baseband and a representation of a locally mod... | 06/14/2005 |
| 6801547 | Ranging cell detection in a noisy environment A technique to identify a response cell in a ranging grant procedure is disclosed herein. The format of the response cell reduces the probability of erroneous response cell detection. The response cell is a conventional ATM cell whose payload includes multiple cell ... | 10/05/2004 |
| 6778781 | Health check algorithm for protection circuit in optical network An optical network has an optical splitter connected to (1) a working optical subscriber unit (OSU) of a working circuit via a working optical fiber, (2) a protection OSU of a protection circuit via a protection optical fiber, and (3) one or more optical network ter... | 08/17/2004 |
| 6771908 | Fast protection switching by snooping on downstream signals in an optical network An optical network has an optical splitter connected to (1) a working optical subscriber unit (OSU) of a working circuit, (2) a protection OSU of a protection circuit, and (3) one or more optical network terminals (ONTs), where an ONT has (i) a working line terminat... | 08/03/2004 |
| 6738578 | Optical communication method and apparatus An optical communication system wherein a light emission circuit operates with reduced power consumption. The optical communication system is used in a communication network wherein communication is had between a control node and plural controlled nodes using light ... | 05/18/2004 |
| 6604870 | Method and an amplifier unit for the transmission of data signals via an optical fiber A method of transmitting data signals via an optical fiber between two network elements (14, 36, 43, 56) in a digital data transmission network comprises using a transmission protocol, wherein, in addition to said data signals, first control and/or monito... | 08/12/2003 |
| 6118564 | Optical time division demultiplexing apparatus and demultiplexed signal switching method as well as optical time division multiplex transmission system The invention provides an optical time division demultiplexing apparatus which can perform optical time division demultiplexing while compensating for an operating point drift of an optical time division multiplex signal. The optical time division demulti... | 09/12/2000 |
| 5706110 | Method and equipment for saving power in infrared data transmission A method is provided wherein idle periods occurring in the data transmission between various services are detected by means of a Power Manager, whereby the infrared link (IrDA-SIR) is shut down automatically. The link restarts automatically when new activ... | 01/06/1998 |
| 5596439 | Self-interference cancellation for two-party relayed communication A source transmitted signal is cancelled at the receiver associated with the transmitter, so that the desired received signal can be extracted from a composite received signal, the composite received signal consisting of the source signal relayed from the... | 01/21/1997 |
| 5341365 | Passive optical network A passive optical network includes a head-end station and a plurality of terminations. The terminations are responsive to control signals from the head-end station. The head-end station is arranged to receive frames having a predetermined bit rate and com... | 08/23/1994 |
| 5299044 | Ranging method for use in TDMA systems on tree-and-branch optical networks In a passive optical tree-and-branch network, which utilizes the Asynchronous Transfer Mode (ATM) transmission format, a superimposed low-level, single frequency, ranging signal is used to determine the distance between an Optical Line Termination (OLT) n... | 03/29/1994 |
| 4278850 | Monitoring system for optical transmission line repeaters The error rate and the operation of repeaters inserted in an optical transmission line are monitored at the terminal station on land by transmitting the test signal and monitoring the response signal of repeaters through the optical data transmission line... | 07/14/1981 |
