Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7184407 | Detecting, reporting and mitigating hidden nodes in a wireless data network A method for automatic hidden node detection that includes observing frame exchange sequences that conform to a MAC standard such as the IEEE 802.11 standard. The method includes detecting a hidden node upon receiving a response frame without previously receiving th... | 02/27/2007 |
| 7170849 | Interleaver, deinterleaver, interleaving method, and deinterleaving method for OFDM data An interleaver and interleaving method each includes two stages, and is useful in coded orthogonal frequency division multiplexed (COFDM) wireless local area networks. A first stage performs a first block permutation and a second stage performs bit order permutation... | 01/30/2007 |
| 7164651 | Wireless computer network including a mobile appliance containing a single chip transceiver A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chi... | 01/16/2007 |
| 7161896 | Channel estimation in a multicarrier radio receiver A method and apparatus for estimating channel characteristics in a multicarrier wireless receiver such as an OFDM wireless receiver. The method includes determining a channel estimate for each of a set of subcarriers by receiving multicarrier data as a result of a w... | 01/09/2007 |
| 7151759 | Automatic gain control and low power start-of-packet detection for a wireless LAN receiver A digital AGC system for burst operation, particularly suited for receiving packets in a wireless local area network. One embodiment includes a log detector that provides a signal strength measure, called the received signal strength indication (RSSI) over a wide dy... | 12/19/2006 |
| 7151945 | Method and apparatus for clock synchronization in a wireless network A method and apparatus for synchronizing a local clock value in a wireless receiver receiving a data unit containing synchronization information. The method includes receiving a first data unit containing synchronization information, extracting the synchronization i... | 12/19/2006 |
| 7149246 | Method and apparatus for reducing oscillator pull in a CMOS wireless transceiver integrated circuit A monolithic transceiver integrated circuit that includes a substrate, a transmitter subsystem of one or more subcircuits on the substrate, and a receiver subsystem of one or more subcircuits on the substrate. Also included is a bias current supply coupled to the re... | 12/12/2006 |
| 7120427 | CMOS wireless transceiver with programmable characteristics A monolithic radio integrated circuit includes a substrate, a set of one or more analog subcircuits on the substrate, a programmable bias current supply on the substrate coupled to the set to provide bias currents to the analog subcircuits of the set including progr... | 10/10/2006 |
| 7110381 | Diversity transceiver for a wireless local area network A wireless local area network system comprises a 5.0+ GHz radio transceiver with two receiving antennas and one transmitting antenna. A transmitter power amplifier output is connected to the transmitting antenna through a 6–8 pole filter to control spurious signal... | 09/19/2006 |
| 7065036 | Method and apparatus to reduce latency in a data network wireless radio receiver A radio receiver for implementing the physical layer receiving function (PHY) of a wireless data network includes a receive processing pipeline for processing samples of a received packet of data. The samples enter the receive processing pipeline at a first sample r... | 06/20/2006 |
| 7061855 | Wireless computer network including a mobile appliance containing a single chip transceiver A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chi... | 06/13/2006 |
| 7058071 | Method and apparatus using pipelined execution data sets for processing transmission frame sequences conforming to a wireless network MAC protocol A MAC controller for a station in a wireless network, and a method for transmitting packets according to a wireless network MAC protocol. A MAC controller includes a packet scheduler connected to an interface for providing packets for transmission, and transmit hard... | 06/06/2006 |
| 7046746 | Adaptive Viterbi decoder for a wireless data network receiver A configurable Viterbi decoder to decode a coded signal for inclusion in a radio receiver for implementing the physical layer receiving function (PHY) of a wireless data network. The decoder includes a branch metric generator with an input to the coded signal, an AC... | 05/16/2006 |
| 7003274 | Frequency synthesizer and synthesis method for generating a multiband local oscillator signal A phase locked loop (PLL) frequency synthesizer to produce a local oscillator signal for a superheterodyne transmitter for operation at a first and a second RF frequency band that are disparate. The transmitter has a fixed intermediate frequency that is a sizable fr... | 02/21/2006 |
| 6944121 | Wireless computer network including a mobile appliance containing a single chip transceiver A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chi... | 09/13/2005 |
| 6898198 | Selecting the data rate of a wireless network link according to a measure of error vector magnitude An apparatus in a node of a wireless network for setting the data rate for sending data to a remote node, and a method for setting the data rate. The method includes receiving a packet from the remote node, determining a measure of signal quality for the received pa... | 05/24/2005 |
| 6888413 | Frequency synthesizer using a VCO having a controllable operating point, and calibration and tuning thereof A frequency synthesizer, a calibrator thereof, and an operating controller thereof are described. The synthesizer comprises a main charge pump that drives a voltage controlled oscillator (VCO) through a loop filter. The calibrator includes a second, replica charge p... | 05/03/2005 |
| 6883012 | Linear-to-log converter for power estimation in a wireless data network receiver A converter to convert an N-bit input in a linear scale to an M-bit output in a logarithmic scale. The converter includes a set of K subrange converters each coupled to a respective number of bits of the N-bit input that represents a subrange of the N-bit input, eac... | 04/19/2005 |
