Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8189621 | Stack signaling to application with lack of requested bandwidth A system for signaling an application when a requested data rate and Quality of Service cannot be achieved using OFDM wireless data transmission, and the application proceeds by either renegotiating QoS and data rate, or waiting until they requested rate and QoS are... | 05/29/2012 |
| 8170063 | Method for reducing interference This invention relates to wireless communication systems, specifically to methods for reducing interference. The invention allows a mobile station to determine if certain transmissions of the mobile station cause interference to reception by a second receiver in the... | 05/01/2012 |
| 8009700 | Multi-carrier signal transmitter and multi-carrier signal receiver A multi-carrier signal transmission apparatus transmits a transmission stream including at least preamble information necessary for synchronizing a transmission signal and data information as a multi-carrier signal. A modulator generates a transmission symbol stream... | 08/30/2011 |
| 7983306 | Method and apparatus for channelizing sampled broadband signal A system for isolating individual channels in a broadcast signal is provided. The system includes a plurality of multipliers, each having an input and an output. A summer coupled to the outputs of each of the plurality of multipliers is provided to generate an outpu... | 07/19/2011 |
| 7978734 | Multichannel MAC data stream for wireless communication A system and method of transmitting a stream of data are provided. A stream of data to be transmitted is identified. The stream of data is divided into a plurality of data segments for transmission on a corresponding plurality of transmission channels. The plurality... | 07/12/2011 |
| 7970016 | Systems and methods for transmission and reception of data including frequency and channel code selection Systems and methods are disclosed for wireless transmission and reception of data including processing and buffering features. According to one or more exemplary aspects, there is provided a wireless audio receiver for receiving a plurality of packets of encoded aud... | 06/28/2011 |
| 7957425 | Communicating distinct data using polarized data signals A method and system is provided for communicating distinct data over a single frequency using multiple polarized data signals. Data signals of the single frequency conveying first data, second data, and third data are polarized in a first polarization scheme and a s... | 06/07/2011 |
| 7924883 | Network architecture for intelligent network elements The present system uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals are terminated at the intelligent network elements, switch... | 04/12/2011 |
| 7848356 | Frequency domain channel estimation in a single carrier frequency division multiple access system A channel estimator for use in a receiver node receiving signals from a plurality of user terminals wherein each user terminal is allotted a respective set of transmission subcarriers and respective test signal sequences for transmission over the channel to be estim... | 12/07/2010 |
| 7848357 | Media access control for a set of downstream and upstream channels in a share-media network In a point to multi-point share-media network, method and apparatus of media access control (MAC) for a modem termination system (MTS) to communicate with a plurality of modems over a set of downstream and upstream channels comprising the steps of designating a MAC ... | 12/07/2010 |
| 7817671 | Method in a transceiver for allocating transmission capacity between the two directions of transmission in wire line data communication A method performed in one single transceiver for allocating transmission capacity between the two directions of transmission in wire line data communication. The method includes the step of allocating from the single transceiver different parts of the available band... | 10/19/2010 |
| 7796649 | System and method for providing additional channels to an existing communications device System and method for providing additional channels to an existing communications system. A preferred embodiment comprises a coprocessor (such as coprocessor 215) coupled to a modem (such as modem 205), wherein transmissions from the modem are routed t... | 09/14/2010 |
| 7769050 | System and method for interference mitigation for wireless communication Disclosed are systems and methods which provide interference mitigation by making alternative resources available within areas served by wireless communication links. Embodiments provide multiple channel availability in establishing wireless communication links to f... | 08/03/2010 |
| 7764711 | CDMA transmission apparatus and CDMA transmission method A control section (110) recognizes the type of data included in a transmission signal and outputs a control signal (C1) to an S/P conversion section (101) and a spreading control section (107). The S/P conversion section (101) appo... | 07/27/2010 |
| 7733916 | Media access control for a set of downstream and upstream channels In a point to multi-point share-media network, method and apparatus of media access control (MAC) for a modem termination system (MTS) to communicate a plurality of modems over a set of downstream and upstream channels comprising the steps of designating a MAC domai... | 06/08/2010 |
| 7720101 | Wideband cable modem with narrowband circuitry A hybrid cable modem includes wideband circuitry configured to receive data over multiple different downstream channels at the same time. The wideband circuitry demodulates signals on the different downstream channels and then formats the demodulated signals back in... | 05/18/2010 |
| 7620072 | Device for reproducing received data for radio data communication and a method of adjusting frequency therefor A receiver arrangement including a received data reproducing device includes an RF (Radio Frequency) receiver configured to determine the signal strength of a received signal and feed it to a clock frequency determining circuit. Number-of-error information, included... | 11/17/2009 |
| 7548564 | Method and apparatus for transmitting data based on OFDM Provided is a method and apparatus for transmitting data based on OFDM (Orthogonal Frequency Division Multiplexing). The method includes: forming a plurality of packets suitable for a selected transmission mode from data input to a transmitter; determining a transfe... | 06/16/2009 |
| 7545832 | Radio communication system, transmitting apparatus, receiving apparatus, processing method and program A transmitting apparatus includes a data dividing unit operable to divide data into pieces of transmittable data, a data outputting unit operable to add a distribution order to the divided pieces of transmittable data to form transmission data, and a transmitter ope... | 06/09/2009 |
| 7539217 | Multi-carrier signal transmitter and multi-carrier signal receiver In transmitting first information necessary for gaining synchronism of transmission signal and second information which is the other information by determining a break of a single modulation unit with a simple structure and processing prior to Fourier transformation... | 05/26/2009 |
| 7522637 | Dynamic resource allocation method for an OFDMA system A dynamic resource allocation method in an OFDMA system is provided. A base station determines if each of a plurality of SSs supports subchannel-based dynamic resource allocation. If an SS supports the subchannel-based dynamic resource allocation, the base station a... | 04/21/2009 |
| 7522636 | System for controlling a plurality of equipments A main control apparatus is connected to a single signal line. A plurality of equipments is respectively connected to a multipoint line. Each multipoint line diverges from the single signal line. The main control apparatus sends a control signal to each equipment th... | 04/21/2009 |
| 7492791 | Ranging and round trip delay timing adjustment in a multi-point to point bidirectional communication system A bidirectional communication system is provided. In one embodiment, a system comprises a host unit to communicate with a plurality of remote units using orthogonal frequency division multiplexing (OFDM), the plurality of remote units communicatively coupled to the ... | 02/17/2009 |
| 7443818 | Method, apparatus and system of multiple-input-multiple-output wireless communication Embodiments of the present invention provide a method, apparatus and system for selectively modulating a data frame of a signal using either a frequency-multiplexing modulation method or a spatial-multiplexing modulation method based on a predetermined criterion. | 10/28/2008 |
| 7440391 | Method and system for dynamic bandwidth allocation Systems and methods for bidirectional communication are provided. In one embodiment, a bidirectional communication comprises a multipoint-to-point host unit and a plurality of remote units communicatively coupled to the multipoint-to-point host unit through an ortho... | 10/21/2008 |
| 7440437 | Method and apparatus for scheduling downlink channels in an orthogonal frequency division multiple access system and a system using the same A downlink channel scheduling method and apparatus for obtaining optimal system performance in a downlink of a wireless communication system using an orthogonal frequency division multiplexing (OFDM) scheme are provided. Terminals compute a plurality of channel capa... | 10/21/2008 |
| 7420957 | Mobile termile capable of efficiently measuring CNIR and CNIR measuring method thereof The present invention relates to a mobile terminal for efficiently measuring a carrier to noise and interference ratio (CNIR) in an orthogonal frequency division multiplexing (OFDM) mobile communication system and a CNIR method thereof. The mobile terminal includes ... | 09/02/2008 |
| 7414961 | System and method for multiframe alignment in a multipoint-to-point orthogonal frequency division multiplexing system Systems and methods for multiframe alignment in a multipoint-to-point orthogonal frequency division multiplexing (OFDM system are provided. In one embodiment, an (OFDM) communication system comprises: a host unit; a plurality of remote units that access the host uni... | 08/19/2008 |
| 7414960 | Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing Systems and methods for bidirectional communication are provided. In one embodiment, a multipoint-to-point, orthogonal frequency division multiplexed (OFDM) communication system comprises: a plurality of remote units, a host unit; wherein the host sends an adjustmen... | 08/19/2008 |
| 7411894 | Apparatus and method for guard interval inserting/removing in an OFDM communication system A transceiver system and method in an OFDM communication system which enables exact symbol synchronization acquisition and improves performance for frequency offset and channel estimation. In the apparatus, a guard interval filling unit copies data at a predetermine... | 08/12/2008 |
| 7411982 | Digital wireless voice and data modem Simultaneous transmission of voice and data over the voice channel of a digital wireless communications network, such as a “cell phone” network, is reconfigurable on the fly among multiple operating modes, including a lull detection mode in which data is transfe... | 08/12/2008 |
| 7403472 | OFDM receiving device and OFDM receiving method The time required for switch the channel can be remarkably curtailed. When broadcasting signals through a plurality of information channels with an OFDM system, the plurality of information channels are multiplexed in the sense of frequency and collectively subjecte... | 07/22/2008 |
| 7400651 | Device and method for interpolating frequency components of signal A frequency interpolation apparatus is provided which reproduces a signal similar to an original signal by approximately recovering suppressed frequency components, from an input signal having the suppressed frequency components in a specific frequency band of the o... | 07/15/2008 |
| 7400572 | System and method for contention based tones in a multipoint-to-point orthogonal frequency division multiplexing system Systems and methods for contention based tones in a multipoint-to-point orthogonal frequency division multiplexing system are provided. In one embodiment, a multipoint-to-point, orthogonal frequency division multiplexed (OFDM) communication system comprises: a host ... | 07/15/2008 |
| 7397758 | Channel tracking in a OFDM wireless receiver An apparatus and a method to estimate the channel response for a set of subcarriers in an OFDM receiver. The receiver receives a packet of information that includes a known transmitted part having known subcarrier values, and includes a signal-to-tone transformer to... | 07/08/2008 |
| 7394876 | Enhanced channel estimator, method of enhanced channel estimating and an OFDM receiver employing the same The present invention provides an enhanced channel estimator for use with an orthogonal frequency division multiplex (OFDM) receiver employing scattered pilot channel estimates. In one embodiment, the enhanced channel estimator includes a time interpolation estimato... | 07/01/2008 |
| 7391750 | System and method for dynamically allocating resources in a mobile communication system employing orthogonal frequency division multiple access Dynamically allocating a frame cell (FC)/subchannel in a mobile communication system by an access point that receives channel quality information (CQIs) fed back from access terminals, determines a modulation and coding scheme (MCS) to be applied to the access termi... | 06/24/2008 |
| 7391764 | Method and system for combining symmetric DSL signals and voice signals This invention provides a simplified communication system that transmits voice and SDSL signals between customer premise equipment (“CPE”) on a single twisted-pair line. The system preferably includes at least one combiner for combining voice and SDSL signals in... | 06/24/2008 |
| 7388885 | Splitter circuit A splitter circuit (19) serves to combine on the transmission side signals which are to be transmitted in different frequency bands (A-C), as well as to separate on the reception side these signals which are transmitted in different frequency bands. For this ... | 06/17/2008 |
| 7389104 | Methods, systems and apparatus for providing urgent public information Embodiments of the invention provide systems and methods for distributing urgent public information. For example, one exemplary of the invention provides a method for providing an alert to a subscriber. The exemplary method comprises receiving an alert message from ... | 06/17/2008 |
