Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7769105 | System and method for communicating low data rate information with a radar system A method for transmitting low data rate symbols from a burst radar transceiver is disclosed. The method includes dividing a symbol having a symbol period into a plurality of symbol sections. Each symbol section has a symbol section interval that is less than or equa... | 08/03/2010 |
| 7756219 | Low-if multiple mode transmitter front end and corresponding method A WLAN transmitter capable of transmitting data signals modulated in accordance with an individual one of at least two different modulation schemes and corresponding methods and integrated circuit chips are provided. The WLAN transmitter contains a front end section... | 07/13/2010 |
| 7376883 | Method and system for providing long and short block length low density parity check (LDPC) codes An approach is provided for generating Low Density Parity Check (LDPC) codes. An LDPC encoder generates a LDPC code with an outer Bose Chaudhuri Hocquenghem (BCH) code. For ⅓ rate, the relevant parameters are as follows: q=120, nldpc=64,800, kldpc | 05/20/2008 |
| 7301440 | Power line communication system and method The present invention provides a device for providing communications through power lines comprised of multiple conductors by transmitting the data signals through a plurality of the conductors. One embodiment of the present invention may be comprised of a transmit c... | 11/27/2007 |
| 7265618 | RF power amplifier having high power-added efficiency The present invention, generally speaking, provides an RF power amplifier that exhibits high PAE at high output powers. The design of the power amplifier is based on the observation that the switching transistor is controlled by either voltage (for a FET) or current... | 09/04/2007 |
| 7132819 | Floating power supply and method of using the same A power supply of the present invention comprises a transducer having a transducer and a voltage regulator. The transducer is coupled to an electrically non-conductive medium, which may be a light pipe. The electrically non-conductive medium is coupled to a non-elec... | 11/07/2006 |
| 7113134 | Transformer antenna device and method of using the same The invention contemplates an antenna device, system and method of installing the antenna device for receiving a wireless signal at a pad mounted electrical transformer. The novel device includes an antenna capable of communicating the wireless signal and a material... | 09/26/2006 |
| 7103240 | Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line The present invention is drawn to an electrically “closed” method and apparatus for transmitting and receiving data signals over a high voltage power line. Inductive coupling is employed for coupling and decoupling the data signal directly on to and off of a sin... | 09/05/2006 |
| 7102478 | Power line coupling device and method of using the same The coupling device of the present invention includes a housing, a first fastening member attached to said housing and coupled to the power line, a second fastening member attached to the housing and coupled to the power line, an inductor providing an impedance to d... | 09/05/2006 |
| 7075414 | Device and method for communicating data signals through multiple power line conductors The present invention provides a device for providing communications through power lines comprised of multiple conductors by transmitting the data signals through a plurality of the conductors. One embodiment of the present invention may be comprised of a transmit c... | 07/11/2006 |
| 7064654 | Power line communication system and method of operating the same A system for operating a power line communication system is provided. One embodiment is comprised of a plurality of network elements, which may take the form of repeaters, bypass devices, backhaul devices, wireless backhaul devices, enhanced bypass devices, communic... | 06/20/2006 |
| 7054382 | Modulator of phase shift keying (PSK) type A modulator phase shift keying modulator for performing data modulation by using the phase difference of each I/Q channel, comprising a data shifter for controlling delay of I/Q channel digital data at input terminals of the I/Q channels. ... | 05/30/2006 |
| 7053756 | Facilitating communication of data signals on electric power systems The invention includes a method, system, and device for communicating a data signal on an electric power system. The inventive method includes communicating the data signal to the electric power system, and modifying the characteristics of the electric power system ... | 05/30/2006 |
| 7046124 | Power line coupling device and method of using the same The coupler of the present invention couples broadband RF signals to and from a power line conductor. The coupler of one embodiment that is for use with overhead power lines includes a length of URD MV cable with the neutral conductor removed and that is communicati... | 05/16/2006 |
| 7042351 | Data communication over a power line Data signals are communicated between a power line and a computer, wherein the power line provides power to the computer via a distribution transformer and the computer is in communication with a wireless communication path. A first data signal is communicated with ... | 05/09/2006 |
| 7003049 | Fractional-N digital modulation with analog IQ interface Digital I and Q (NRZ) data streams are generated by specially configured conversion circuits, the outputs of which are applied to a F-N synthesizer to modulate the synthesizer. All illustrative conversion circuit employs a system of comparators to detect the state o... | 02/21/2006 |
| 6998962 | Power line communication apparatus and method of using the same A communication device for use with a power line communication system is provided. One embodiment forms a bypass device and comprises a low voltage coupler, a low voltage signal conditioner, a controller, a medium voltage modem, a first medium voltage signal conditi... | 02/14/2006 |
| 6980090 | Device and method for coupling with electrical distribution network infrastructure to provide communications A device for providing communications through power lines that are communicatively coupled to an electrical distribution network infrastructure and to the internal wiring of at least one customer premises having one or more communication devices therein is provided.... | 12/27/2005 |
| 6980091 | Power line communication system and method of operating the same The present invention provides a system for operating a power line communications system that is comprised of a plurality of network elements, which may take the form of repeaters, bypass devices, backhaul devices, wireless backhaul devices, enhanced bypass device, ... | 12/27/2005 |
| 6977578 | Method of isolating data in a power line communications network Isolating data in a power line communications system. Although plural subscribers receive electric power distributed from a common distribution transformer, it is desirable to isolate their branch lines from one another when those branch lines are used to conduct da... | 12/20/2005 |
| 6968014 | Missing cycle based carrier modulation A sinusoidal R.F. carrier is modulated for the transmission of digital binary datastreams through the deletion of carrier wavelets. These wavelets are defined between zero crossover positions representing zero energy locations. One or more wavelets are switched out ... | 11/22/2005 |
| 6965303 | Power line communication system and method A method of communicatively coupling power line communication (PLC) devices to a first and second overhead power line conductor that travel in a substantially parallel physical arrangement and in spaced-apart relation is provided. The method may comprise coupling a ... | 11/15/2005 |
| 6965302 | Power line communication system and method of using the same The communication system of one embodiment is for communicating data through a power distribution system having a medium voltage power line and low voltage power line and comprises a first device comprising a first wireless transceiver, a first modem in communicatio... | 11/15/2005 |
| 6958680 | Power line communication system and method of using the same The last portion of the electrical distribution system is used to provide high-speed communications to residential homes. An aggregation point interfaces a medium voltage power line with a point-of-presence, and a power line bridge enables flow of communications sig... | 10/25/2005 |
| 6950567 | Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line The present invention is drawn to an electrically “closed” method and apparatus for transmitting and receiving data signals over a high voltage power line. Inductive coupling is employed for coupling and decoupling the data signal directly on to and off of a sin... | 09/27/2005 |
| 6933835 | Data communication over a power line A signal is received from a first portion of a power line and at least a portion of the signal is converted to a non-electrically conducting signal. The non-electrically conducting signal may be communicated to a non-electrically conductive communication path. In th... | 08/23/2005 |
| 6914556 | Method and apparatus for magnetron coherence A pulsed magnetron is caused to emit a series of RF energy pulses which are phase coherent with an injection signal by supplying the magnetron with a pedestal pulse during low-power signal injection. The pedestal being of a magnitude and duration such that the slow-... | 07/05/2005 |
| 6882604 | Method and apparatus for utilizing modulation codes that produce maximized sample timing information The invention is a modulation system that encodes symbols in accordance with a modulation code which, for a given communications channel, produces a signal that at the decoder includes maximized sample timing information in each encoded symbol. For systems that use ... | 04/19/2005 |
| 6661850 | Testing system of voice-band data transmission interface on an exchange According to the present invention, a maintenance operator can optionally or automatically test not only normality of a frequency shift keying (FSK) signal calling circuit but a specification, a transmission protocol and a standard of a signal length of F... | 12/09/2003 |
| 6449318 | Variable low frequency offset, differential, OOK, high-speed twisted pair communication A method and system for transmitting data over twisted pair copper wires using a low frequency offset, differential voltage, on-off keying (OOK) transmission technique are described. According to one embodiment, an analog or digital signal is sent or rece... | 09/10/2002 |
| 6434135 | Adaptive RF amplifier prelimiter The invention reduces transient peaks in signals transmitted in CDMA communication systems. A plurality of spread spectrum data signals are combined into a combined signal having fluctuating power level corresponding to the combination of the data signals... | 08/13/2002 |
| 6396355 | Signal generator having fine resolution and low phase noise A signal generator includes an oscillator, a phase locked loop and a fractional divider. The oscillator is configured to provide an output signal. The phase locked loop is configured to receive the output signal and to provide a tuning signal to the oscil... | 05/28/2002 |
| 6314143 | Circuit configuration for manipulation-protected reception of an OOK-modulated signal A circuit configuration for receiving an OOK-modulated signal, in particular for use in a data carrier of an identification system. The configuration has a demodulator circuit, a decoding circuit that is connected downstream of the latter and a sequential... | 11/06/2001 |
| 6301310 | Efficient implementation for systems using CEOQPSK Circuitry for modulating the frequency of a carrier signal with data signals for high frequency radio transmission, which includes a MSK generator for generating a series of in-phase (I) signals and an associated series of quadrature (Q) signals correspon... | 10/09/2001 |
| 5715236 | System and method for generating signal waveforms in a CDMA cellular telephone system A system and method for communicating information signals using spread spectrum communication techniques. PN sequences are constructed that provide orthogonality between the users so that mutual interference will be reduced, allowing higher capacity and b... | 02/03/1998 |
| 5659569 | Data burst randomizer A method and system, for use in a communication system in which data is transmitted in data frames of a predetermined time duration, for the positioning of the data within the data frames for transmission. A computation circuit computes according to the d... | 08/19/1997 |
| 5623515 | Data communication system for reducing a risk of transmission errors A data communication system comprises a main device with a first microcomputer and an operating device with a second microcomputer. The devices are connected to each other by a first wire and by a second wire. In addition to that, input interrupt terminal... | 04/22/1997 |
| 5581547 | Random access communication method by CDMA and mobile station equipment using the same Mobile stations randomly set delay amounts for each message to be sent, on the basis of the timing of a symbol received from a base station, and delay transmission signals for time intervals corresponding to the delay amounts. The base station 11 despread... | 12/03/1996 |
| 5535239 | Data burst randomizer A method and system, for use in a communication system in which data is transmitted in data frames of a predetermined time duration, for the positioning of the data within the data frames for transmission. A computation circuit computes according to the d... | 07/09/1996 |
| 5475684 | Time-division multiplex communication transmission apparatus A time-division multiplex communication transmission apparatus includes a logic processing circuit, a digital filter, a modulation circuit, and a high-frequency amplification unit. The logic processing circuit performs logic processing of input burst data... | 12/12/1995 |
