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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 7502338 | De-emphasis training on a point-to-point connection A method for establishing data transmission between a two devices by performing de-emphasis training is disclosed. While a retry count does not exceed a predetermined threshold: a training pattern with a signal strength is sent from a first device to a second device... | 03/10/2009 |
| 7440417 | Method and system for frame and protocol classification A system and method of protocol and frame classification in a system for data processing is disclosed, including, analyzing a portion of the, packet or frame according to predetermined tests, and storing characteristics of the packet for use in subsequent processing... | 10/21/2008 |
| 7369516 | Adaptive echo canceling A method for transmitting data signals in full duplex with echo cancellation between a first and a second modem connected by a two-wire channel, wherein a data signal is a function of at least one data symbol in a stream of data symbols generated by a modem comprisi... | 05/06/2008 |
| 7366475 | Signal strength measurements in cellular telecommunication systems A mobile station (MS) and method for estimating received signal strength of a radio signal from a neighboring cell in a cellular radio telecommunication network. The MS measures the received signal strength of the radio signal over a plurality of frames, and calcula... | 04/29/2008 |
| 7366259 | Channel estimator The present invention is a channel estimator based on the values of received data and on a priori probabilities only of received symbols. The channel estimator includes a symbol probability generator, a noise variance estimator and a channel tap estimator. The symbo... | 04/29/2008 |
| 7349436 | Systems and methods for high-throughput wideband wireless local area network communications A frame format provides for wideband wireless local area network communications and informs narrower-band communication units when the channels are occupied by wider-band communication units. In some embodiments, the frame format includes a channelization field iden... | 03/25/2008 |
| 7349482 | Echo canceller of ADSL system and training method thereof An echo cancellation circuit includes delay units at its input unit and output unit in order to adjust the delay caused by a FIFO. The delay times of the delay units are trained using a training signal, such the REVERB signal, that is a system initializing signal. I... | 03/25/2008 |
| 7333448 | Full duplex transceiver The invention includes a full duplex transceiver for transmitting and receiving communication signals. The transceiver includes 1 to N sample and hold circuits. Each sample and hold circuit receives a first signal that includes a far-end signal, and in some cases an... | 02/19/2008 |
| 7324605 | High-throughput multicarrier communication systems and methods for exchanging channel state information A frame structure for communicating over a high-throughput communication channel includes a channelization field as part of a current data unit to indicate a frequency and space configuration of subsequent portions of the current data unit. ... | 01/29/2008 |
| 7299067 | Methods and systems for managing the provision of training provided remotely through electronic data networks to users of remote electronic devices Methods and systems for providing and managing training through/over networks to remote multimedia device users are disclosed. Training can be provided through networks to computers and portable hand held devices. Handheld devices can include PDAs, pagers, and wirel... | 11/20/2007 |
| 7260117 | Synchronizing initial handshake in ADSL annex C to TTR Techniques for establishing TTR indication in ADSL Annex C based communication systems are disclosed. The techniques enable, for example, hyperframe alignment and synchronized initialization procedures (e.g., G.hs). ... | 08/21/2007 |
| 7239660 | Adaptive filter with GSPT LMS algorithm for reducing complexity A linear/non-linear adaptive filter for transforming an input signal to an output signal. The present invention also includes a novel GSPT LMS algorithm for significantly reducing complexity. The adaptive filter includes a coefficient updater that can execute a Carr... | 07/03/2007 |
| 7212597 | Acquisition and reconstruction techniques of automatic rate adaptation and time-data-correlation for arbitrary signal types A process of acquiring, transmitting and reconstructing data signals is disclosed. The process includes monitoring a timing reference signal produced by a timing reference and receiving an input data signals on input/output modules. The input data signals are sample... | 05/01/2007 |
| 7203241 | Methods and apparatus for adaptive PCM level estimation and constellation training Systems compensate for the presence of digital impairments using adaptive constellation techniques. Sample magnitudes are estimated from received samples transmitted during a training period using an algorithm based on minimizing the sum of squares of the estimated ... | 04/10/2007 |
| 7187736 | Reducing interference in a GSM communication system A method for reducing interference in a desired signal in a GSM communication system uses a finite-impulse-response filter for alternate linear equalization. The method includes a first step (300) of inputting a burst of data of a received waveform including ... | 03/06/2007 |
| 7177416 | Channel control and post filter for acoustic echo cancellation An acoustic echo canceller comprising an adaptive filter, a post filter, and an adjustable filter. The adaptive filter receives a reference signal and a near-end signal, cancels a portion of the echo in the near-end signal using the reference signal, and provides an... | 02/13/2007 |
| 7154797 | Signal transmission system using PRD method, receiver circuit for use in the signal transmission system, and semiconductor memory device to which the signal transmission system is applied A signal transmission system is constructed to transmit data over a signal transmission line without requiring precharging the signal transmission line for every bit, by eliminating the intersymbol interference component introduced by preceding data. The signal tran... | 12/26/2006 |
| 7133442 | Rapid identification of transmission media channel characteristics Rapid identification and modeling of transmission media channel characteristics of a communications system using a correlation based technique. The technique provides a known training sequence used to generate a known quantity that operates on an observed or measure... | 11/07/2006 |
| 7133906 | System and method for remotely configuring testing laboratories The invention provides a system for remotely configuring a plurality of devices to customize a lab network system for testing components and for training operators to use and maintain such systems. The system is configured to remotely access and control such a syste... | 11/07/2006 |
| 7133425 | Communication system A method and apparatus is disclosed for facilitating high-speed data communication. In one embodiment a receiver is configured to include error correction coding in an interleaved environment to increase data transmission rates. In one embodiment the signal mapping ... | 11/07/2006 |
| 7126946 | Dual key controlled content addressable memory for accessing packet switch data buffer for multicasting data packets A data management architecture for a high speed packet switch has a dual key-based content addressable memory (CAM)-based buffer access control mechanism that stores relatively long data packets for delivery to multiple output ports of the switch. The CAM stores mul... | 10/24/2006 |
| 7095788 | Circuit for facilitating simultaneous multi-directional transmission of multiple signals between multiple circuits using a single transmission line An encoding element (109, 111, 113) and a decoding arrangement (110, 112, 114) is included with each separate circuit (104, 105, 106) in a system (100) of circuits which must communicate digital signals with each other. The encoding devic... | 08/22/2006 |
| 7079601 | Efficient channel estimation in a digital communications system A channel estimation method and apparatus for GSM/EDGE digital communications systems utilizing previously unexploited properties of GSM/EDGE training sequences to permit a more efficient initial channel estimation for equalizer operation and for joint synchronizati... | 07/18/2006 |
| 7058730 | Unique address space and method for a transport network A method and system for routing an externally generated message in a network includes receiving at an ingress port of a network a message from an external network. The message includes Internet protocol (IP) source and destination addresses and message data. The IP ... | 06/06/2006 |
| 7023812 | System and method for improving modem transmission through private branch exchanges, central offices, and other systems A modem including an echo canceller adapted to determine locations of far-end echo sources. The echo canceller is adapted to send a signal to turn off network echo suppressors and enter a training mode. A training signal at a predetermined modem training frequency i... | 04/04/2006 |
| 7020068 | Echo and crosstalk cancellation A cancellation system comprises a channel circuit (11) for each noise source, such as echo in a particular cable pair. There are only eighty taps per channel, in two blocks (n_echo_a, f_echo_a). Each block is preceded by a variable delay line comprising block... | 03/28/2006 |
| 7002897 | Multiple channel interference cancellation A method and apparatus for reducing crosstalk in a multi-channel communication system is disclosed. In one embodiment, outgoing signals in a multi-channel environment are manipulated into a transform domain, such as the frequency domain. Thereafter, the signals may ... | 02/21/2006 |
| 7003027 | Efficient PCM modem Apparatus and devices used to achieve a computationally efficient modem having a transmit path and a receive path. The apparatuses include a Farrow phase shifter for shifting the phase of signals in the transmit path, a fractionally spaced equalizer capable of equal... | 02/21/2006 |
| 7003024 | Semiconductor device A semiconductor device comprises a DSP (Digital Signal Processor), a CPU for controlling the DSP and an interface circuit. The interface circuit comprises an input circuit, a gain-adjusting circuit and an output circuit. The input circuit inputs a digital signal and... | 02/21/2006 |
| 6987782 | Method and apparatus for detecting robbed bit location in PCM modems and the like A method and apparatus for detecting the location of robbed bits by a digital communications network. A complete echo cancellation circuit also is disclosed employing the robbed bit detection method and apparatus in which the coefficients of the echo cancellation FI... | 01/17/2006 |
| 6987752 | Method and apparatus for frequency offset estimation and interleaver synchronization using periodic signature sequences A method and apparatus are disclosed for frequency offset estimation and interleaver synchronization, using periodic signature sequences, such as Barker codes. The periodic signature sequence is used for interleaver synchronization or frequency offset estimation or ... | 01/17/2006 |
| 6975685 | Apparatus and method for multi-channel communications system A communications system employs digitally modulated signals operating in a band of frequencies that is divided into two or more non-overlapping channels, with each channel occupying no more than a predetermined maximum frequency band. A receiver system includes a fr... | 12/13/2005 |
| 6950515 | Telecommunication system using digital-subscriber lines coexisting with TCM-ISDN lines Provided is an asymmetric digital subscriber line (ADSL) system that communicates via digital subscriber line (DSL) routing through a bundle of cables including a communication line for time compression multiplexing-integrated services digital network (TCM-ISDN) sys... | 09/27/2005 |
| 6947553 | Communication system for controlling training of echo canceller and line switching system A communication system being made up of a two-wire/four-wire hybrid circuit, an echo canceller, and a control device and having functions of forming a plurality of communication paths and changing communication paths is provided which is capable of ensuring high spe... | 09/20/2005 |
| 6931054 | Method for estimating channel parameters of radio channels of a W-CDMA mobile radio system A method for estimating channel parameters of radio channels of a W-CDMA mobile radio system, for example in accordance with the UMTS standard includes transmitting sequences of known symbols between unknown data symbols by a base station. The channel estimation is ... | 08/16/2005 |
| 6928110 | Adaptive equalizer training circuit, modem apparatus and communication apparatus A training circuit for training a tap coefficient of an adaptive equalizer that performs error calculations in a training process and updating of the tap coefficient in a time area and thereby makes the tap coefficient converge stably in a short time. ... | 08/09/2005 |
| 6920219 | Method and apparatus for providing echo cancellation A method for providing echo cancellation between a first and second communication unit detects an echo condition (200) between first and second communication units. In addition, the method includes detecting whether a decoded near end audio packet contains a ... | 07/19/2005 |
| 6920115 | Time-division multiplex radio communication method, transmitter and receiver for implementing such method A transmitter produces radio signal bursts in periodic time slots allocated to a time-division multiplexed channel. The radio signal of each burst is made up of digital symbols comprising two training sequences enabling the receiver to estimate demodulation paramete... | 07/19/2005 |
| 6792038 | Startup protocol for high throughput communications systems A startup protocol is provided for use in a communications system having a communications line with a master transceiver at a first end and a slave transceiver at a second end, each transceiver having a noise reduction system, a timing recovery system and at least o... | 09/14/2004 |
| 6771591 | Method and system for processing orthogonal frequency division multiplexed signals An Orthogonal Frequency Division Multiplexing (OFDM) receiver that compensates for FFT window drift by extracting a training symbol from a fast Fourier transformed OFDM signal, and processing the extracted training symbol to derive an FFT window adjustment factor an... | 08/03/2004 |
