Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 8081045 | Beamformer power divider/combiner with transmission lines distributed between MMIC and associated PC board A beamformer includes an integrated-circuit power divider/combiner including a common port. A first transmission line extends from the common port to an individual port on the integrated circuit substrate. A first portion of a second transmission line extends on the... | 12/20/2011 |
| 8058948 | Signal splitter with improved transmisson line transformer A splitter circuit for use in a CATV network. A signal input communicates with a first balun to supply two signal outputs, wherein the first balun is impedance matched to the impedance of the input using two or more additional baluns in parallel with each other. The... | 11/15/2011 |
| 8008989 | Power line communication system and capacitive signal coupling unit In power line communications using carrier waves of high frequencies in the MHz range such as 2 to 30 MHz, when a coaxial cable for performing transmission of signals and a power line are signal-coupled using a capacitive signal coupling unit, even if an impedance m... | 08/30/2011 |
| 7965153 | Signal splitter A signal splitter comprising an input and a plurality of outputs is provided, wherein alternate outputs are connected to phase shifting devices. The phase shifting devices preferably comprise phase shifting transformers and introduce a phase shift of 180°, so that ... | 06/21/2011 |
| 7746194 | Signal splitter/combiner for reducing noise ingress and cable television network incorporating plurality of same A signal splitter comprising an input and a plurality of outputs is provided, wherein alternate outputs are connected to phase shifting devices. The phase shifting devices preferably comprise phase shifting transformers and introduce a phase shift of 180°, so that ... | 06/29/2010 |
| 7679471 | Signal splitter circuit with prevention circuitry to reduce generation of intermodulation products A signal splitter for reducing noise ingress and a cable television network incorporating such splitters. A signal splitter has an input and a plurality of outputs, where alternate outputs are connected to phase shifting devices. Prevention circuitry is provided for... | 03/16/2010 |
| 7675385 | N-way reconfigurable power divider The present disclosure is directed to a method, apparatus, and system for dividing power. An N-way power divider comprises a power input, a switched transformer, a switched power divider, and plurality of power outputs. The switched power divider is configurable to ... | 03/09/2010 |
| 7671701 | Method and device for providing broadband over power line communications A transmit and receive circuit for use in power line communication devices is provided. One embodiment of the circuit includes a receive channel with a first delay circuit coupled to a first switch having an open configuration and a closed configuration a first swit... | 03/02/2010 |
| 7671702 | 2D transmission line-based apparatus and method A power combiner comprising an LC lattice structure is shown, together with a method for generating a planar wave front. The LC structure can comprise constant or voltage dependent capacitors. Either the delay or the characteristic impedance of the two-dimensional t... | 03/02/2010 |
| 7492239 | Radio frequency combiner An electronic circuit, an RF signal power amplifier circuit, and an integrated circuit provide for combining two radio frequency signals. These circuits include, among other things, capacitors (276, 282) that provide an elliptic section. This elliptic section... | 02/17/2009 |
| 7456704 | 2D transmission line-based apparatus and method A power combiner comprising an LC lattice structure is shown, together with a method for generating a planar wave front. The LC structure can comprise constant or voltage dependent capacitors. Either the delay or the characteristic impedance of the two-dimensional t... | 11/25/2008 |
| 7395028 | Switching apparatus and satellite antenna switching apparatus A satellite antenna switching apparatus has LNB ports to which LNBs are connected, receiver ports to which receivers that exchange signals with the LNBs are connected, cascade ports to which another switching apparatus is cascade-connected, and impedance circuits th... | 07/01/2008 |
| 7388452 | Integrated branching network system and joint connector A network system is provided with a joint connector for branching a communication line to plural lines respectively linked with plural nodes, the joint connector is provided with terminals for respectively linking with plural nodes, and circuits respectively having ... | 06/17/2008 |
| 7373528 | Increased power for power over Ethernet applications According to one embodiment of the invention, a method for supplying power over Ethernet includes determining whether a first port of power sourcing equipment is supplying current to a power over Ethernet device in a predetermined current range. The method also incl... | 05/13/2008 |
| 7366244 | Method and system for antenna interference cancellation A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ... | 04/29/2008 |
| 7361837 | Electrical connection device An electrical connection device (10) for connecting a multi-core machine cable to another electrical device comprises a body (12) having an end-face with apertures and a plurality of insulating sleeves (22) extending about the apertures and a pl... | 04/22/2008 |
| 7356315 | Outphasing modulators and methods of outphasing modulation In one exemplary embodiment of the invention, an outphasing modulator may include at least a multiplier to multiply an amplitude modulation signal by a phase modulated carrier signal to generate a modulated signal. The outphasing modulator may also include a phase s... | 04/08/2008 |
| 7330703 | Transceiver for bidirectional frequency division multiplexed transmission The present invention relates to a transceiver for bidirectional frequency division multiplexed transmission, a communication system including one or more transceivers. Optionally, the communication system is a communication system for a digital subscriber line. The... | 02/12/2008 |
| 7286026 | Serial signal injection using capacitive and transformer couplings for power line communications A coupling network has a first power line interface port and a power line modem interface configured to be coupled to a power line modem transceiver. An inductor-capacitor circuit coupled to the power line modem interface has a low-impedance resonant frequency at a ... | 10/23/2007 |
| 7287108 | Capacitive multidrop bus compensation The signal integrity of a high speed heavily loaded multidrop memory bus is often degraded due the numerous impedance mismatches. The impedance mismatches causes the bus to exhibit a nonlinear frequency response, which diminishes signal integrity and limits the band... | 10/23/2007 |
| 7278015 | Methods and devices for DRAM initialization A device for DRAM initialization of a computer system. A detection circuit detects memory condition and outputs a fast initialization signal. A buffer stores initialization parameters of the memory. A memory controller sets the initialization parameters according to... | 10/02/2007 |
| 7245192 | Coupler with edge and broadside coupled sections Couplers are disclosed that include first and second mutually coupled conductors. The coupled conductors may be regular or irregular in configuration, and for example, may be linear, including rectilinear or with one or more curves, bends or turns, such as forming a... | 07/17/2007 |
| 7230811 | Modular power line network adapter A modular feed-though adapter that allows an electrical connection to a power line network adapter without “using up” an electrical outlet is described. In one embodiment, the modular feed-through adapter also provides noise filtering to protect electrical equip... | 06/12/2007 |
| 7224180 | Methods and systems for rise-time improvements in differential signal outputs A method for maintaining signal integrity of a differential output signal generated from a differential driver is disclosed. The method includes receiving the differential output signal from the differential driver. Once received, the method includes tuning the diff... | 05/29/2007 |
| 7218185 | Impedance circuit, and filter circuit, amplifier circuit, semiconductor integrated circuit, electronic component, and wireless communications device using the same A filter circuit is provided wherein one end of an inductor is connected to one end of a capacitor to form a signal input end. The other end of the inductor is connected to a first switch circuit, and the other end of the capacitor is connected to a second switch ci... | 05/15/2007 |
| 7218909 | Integrated low noise amplifier An integrated circuit (IC) low noise amplifier includes an on-chip balun and an on-chip differential amplifier. The on-chip balun is operably coupled to convert a single-ended signal into a differential signal. The on-chip differential amplifier is operably coupled ... | 05/15/2007 |
| 7215762 | Method of selecting impedance setting for loop start trunk line A method of selecting an optimum impedance for a loop start trunk line, comprising successively applying respective ones of a plurality of impedance settings to the loop start trunk line, for each impedance setting measuring the impulse response of the trans-hybrid ... | 05/08/2007 |
| 7212078 | Method and assembly for providing impedance matching network and network assembly An impedance matching network and network assembly employ one or more variable inductive elements, wherein one or more of the variable inductive elements includes a high temperature ferrite core, a helical coil, and a means for physically translating the magnetic co... | 05/01/2007 |
| 7212789 | Tunable duplexer The method and apparatus herein identifies tunable duplexer in a communication system. The tunable duplexer includes a tunable receiver filter, a tunable transmitter filter, a variable receiver phase shifter, and variable transmitter phase shifter. Each filter and p... | 05/01/2007 |
| 7190933 | Method and apparatus for automatic tuning of a resonant loop antenna in a transceiver circuit Disclosed is a circuit and method for automatic tuning of a resonant circuit in a transceiver having a receiver and a transmitter that includes a power amplifier for driving the resonant circuit. During a transmit mode of the transceiver, a resonance voltage of the ... | 03/13/2007 |
| 7161377 | Bus type connection system in particular for backplanes The invention relates to bus type connection systems, in particular those for wiring backplanes of electronic systems, when the bus comprises connectors distributed in an irregular manner. It consists in selecting segments (D1, D2) over which t... | 01/09/2007 |
| 7142833 | Matching unit A matching unit includes a switching means for switching an inductance of a first inductor. This switching means sets an inductance such that a first inductor shows an inductance property to both of the VHF low-band and high-band, and shows a capacitance property to... | 11/28/2006 |
| 7142060 | Active splitter for multiple reception units An active splitter is disclosed for splitting an input signal into a plurality of split output signals. The active splitter may include a plurality of active circuits connected in parallel that produce the plurality of split output signals from the received input si... | 11/28/2006 |
| 7138886 | Wideband CATV signal splitter device A wideband high frequency signal splitter device utilized in a signal distribution network is disclosed. An input signal having a substantially extended frequency bandwidth is applied to an input port of the proposed signal splitter from the upstream portion of a si... | 11/21/2006 |
| 7138887 | Coupler with lateral extension A coupler is disclosed that includes first and second mutually coupled spirals or loops disposed on opposite sides of a dielectric substrate. The substrate may be formed of one or more layers and the loops may have a number of turns appropriate for a given applicati... | 11/21/2006 |
| 7123884 | RF switch A radio frequency (RF) switch which is used in an RF unit of a communication apparatus and which has less of an insertion loss during a transmission. A strip line disposed in the RF switch is formed by combining first and second strip lines having different values o... | 10/17/2006 |
| 7123676 | Method and system for antenna interference cancellation A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ... | 10/17/2006 |
| 7113759 | Controller area network transceiver having capacitive balancing circuit for improved receiver common-mode rejection A controller area network transceiver and a transmission method for a controller area network provides improved symmetry between its differential output signal CANH and CANL such that capacitive imbalance is minimized. The transceiver disclosed herein includes a dri... | 09/26/2006 |
| 7106147 | Apparatus, system, and method for high frequency signal distribution In some embodiments, an apparatus, system, and method for high frequency signal distribution may input a source signal and provide a plurality of outputs having equal phase and magnitude using a pie-divider 205. The pie-divider 205 may include an input... | 09/12/2006 |
| 7091872 | Controlled power source for underground line location A transmitter for a line locator system that controls the electrical current, voltage or power applied to the target line is disclosed. Control of the electrical output of the transmitter can be achieved passively or by means of a feedback control system. A transmit... | 08/15/2006 |
