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| Number | Title | Issue Date |
| 8165469 | Cascade and ring measurement sensor with fixed and variant wavelength encoding An optical add drop multiplexer (OADM) for use in a sensing system has the OADMs arranged either in a cascade or in a ring, with each OADM accepting a source input and generating a source output, and accepting a signal input and generating a signal output, where the... | 04/24/2012 |
| 8165251 | Interpolation IIR filter for OFDM baseband processing A filter for receiver and operative on a stream of OFDM symbols has a symbol timing identifier which indicates the time interval for each symbol and also indicates a non-truncation interval and a truncation interval of the stream of symbols. The stream of OFDM symbo... | 04/24/2012 |
| 8161205 | Packet buffer management apparatus and method A reduced complexity maximum likelihood decoder receives a stream of received symbols Y accompanied by a channel estimate matrix H. A variable transformation part includes a first part which converts Y and H into Z and R by computing a matrix R having at least one n... | 04/17/2012 |
| 8160190 | IIR receive filter for OFDM baseband processor A receive filter for a stream of OFDM symbols has an infinite impulse response (IIR) filter which receives packets having a preamble part followed by a data part, the data part having a succession of cyclic prefixes followed by OFDM symbols. The packet is provided t... | 04/17/2012 |
| 8159683 | Reflective piano keyboard scanner A scanner for a keyboard device having a reflective surface for each key has a sensor associated with each key that includes an LED and a photo-transistor. The LED is turned ON for a first measurement, followed by a second measurement with the LED turned off, and a ... | 04/17/2012 |
| 8155220 | IIR transmit filter for OFDM baseband processor A transmit filter for a stream of OFDM symbols has a remapper, Infinite Impulse Response (IIR) filter and a controller, the transmit filter operating on a stream of OFDM symbols. The transmit filter accepts symbols to be transmitted, the re-mapper re-orders them, th... | 04/10/2012 |
| 8151155 | Packet Re-transmission controller for block acknowledgement in a communications system A re-transmit processor for a wireless communication system includes a pointer memory which contains pointers associated with particular packet data in a host memory. The re-transmit processor directs data associated with the pointers to be applied to a media access... | 04/03/2012 |
| 8149966 | Packet acquisition controller with signal strength threshold control for wireless MIMO receiver An packet detection controller accepts an input from an AGC controller which indicates the presence of an increased signal energy and also completion of an AGC process and generates an output to suspend the AGC process. The packet detection controller also receives ... | 04/03/2012 |
| 8149965 | Level sensitive packet detector An packet detection controller accepts an input from an AGC controller which indicates the presence of an increased signal energy and also completion of an AGC process and generates an output to suspend the AGC process. The packet detection controller also receives ... | 04/03/2012 |
| 8139699 | Process for preamble detection in a multi-stream 802.16E receiver A preamble detector for a plurality of streams of baseband digitized signals has a plurality of preamble processors, each preamble processor coupled to an input and generating an output. Each preamble processor has an input coupled to a first delay, the output of th... | 03/20/2012 |
| 8107518 | Stream weight estimation and compensation in SIMO/MIMO OFDM receivers A process for equalizing streams of OFDM subcarrier data computes the noise variance for each stream, and forms a stream weighting coefficient by equalizing the noise variance, such that for a first stream having a noise variance σ1 and a second stream h... | 01/31/2012 |
| 8090062 | Process for packet detection An packet detection controller accepts an input from an AGC controller which indicates the presence of an increased signal energy and also completion of an AGC process and generates an output to suspend the AGC process. The packet detection controller also receives ... | 01/03/2012 |
| 8090035 | Method for setting inter-packet gain An packet detection controller accepts an input from an AGC controller which indicates the presence of an increased signal energy and also completion of an AGC process and generates an output to suspend the AGC process. The packet detection controller also receives ... | 01/03/2012 |
| 8081700 | Power allocation method for MIMO transmit beamforming A transmit power allocation method for computing a transmit beamforming W matrix for a N streams of data, the method has a first step of measuring a receive channel characteristic H matrix, a second step of decomposing the H matrix into a U matrix which is formed fr... | 12/20/2011 |
| 8077591 | Combined OFDMA preamble index identification, integer frequency offset estimation, and preamble CINR measurement A wireless signal processor for use in identifying a maximum Carrier to Noise Interference Ratio (CINR) associated with a plurality of received OFDMA subcarriers has a candidate generator for forming a plurality of candidate values from a particular set of received ... | 12/13/2011 |
| 8073085 | Analog to digital converter bit width and gain controller for a wireless receiver A gain controller for a wireless communication system sets the receiver gain during the initial time duration of a preamble, and for each subsequent symbol computes a new gain value, which is applied at the end of each symbol. An analog to digital converter resoluti... | 12/06/2011 |
| 8051222 | Concatenating secure digital input output (SDIO) interface An apparatus and a process for transferring packet data includes receiving packets from a first interface such as a network interface and transferring data to a second interface such as an SD Bus interface such as SDIO using a protocol such as one described in SDCar... | 11/01/2011 |
| 8038858 | Coaxial plasma arc vapor deposition apparatus and method An apparatus for deposition of plasma reaction films includes a substrate for the deposition of either thin or thick films. The substrate also allows for a film deposition which adheres to the substrate, and also films which may be removed after deposition. The cath... | 10/18/2011 |
| 8031762 | Stream weight estimation and compensation in SIMO/MIMO OFDM receivers A process for equalizing streams of OFDM subcarrier data computes the noise variance for each stream, and forms a stream weighting coefficient by equalizing the noise variance, such that for a first stream having a noise variance σ1 and a second stream h... | 10/04/2011 |
| 8013234 | Reflective piano keyboard scanner A scanner for a keyboard device having a reflective surface for each key has a sensor associated with each key that includes an LED and a photo-transistor. The LED is turned ON for a first measurement, followed by a second measurement with the LED turned off, and a ... | 09/06/2011 |
| 8008949 | Clock selection for a communications processor having a sleep mode A clock selector operative on two clocks operating on different domains and responsive to a SELECT input provides a transition from a first clock to a second clock, and from a second clock to a first clock with a dead zone therebetween. The delay is provided by a do... | 08/30/2011 |
| 8005179 | Preamble detection in a multi-antenna MIMO 802.16e receiver A preamble detector for a plurality of streams of baseband digitized signals has a plurality of preamble processors, each preamble processor coupled to an input and generating an output. Each preamble processor has an input coupled to a first delay, the output of th... | 08/23/2011 |
| 7986738 | Peak to average power ratio reduction apparatus and method for a wireless OFDM transmitter An OFDM symbol comprises information subcarriers which carry the information to be transmitted, accompanied by edge subcarriers, which are selected to minimize the PAPR of the transmitted signal. The selection of edge subcarriers which minimizes PAPR enables either ... | 07/26/2011 |
| 7965782 | Reduced complexity maximum likelihood decoder for MIMO communications A reduced complexity maximum likelihood decoder receives a stream of symbols Y and channel estimate H. A transformation converts Y and H into Z and R by computing matrix R, such that the product of R and Q produces matrix H. A second transformation column-swaps matr... | 06/21/2011 |
| 7957273 | Packet re-transmission controller for block acknowledgement in a communications system A re-transmit processor for a wireless communication system includes a pointer memory which contains pointers associated with particular packet data in a host memory. The re-transmit processor directs data associated with said pointers to be applied to a media acces... | 06/07/2011 |
| 7936237 | Multi-band transmit-receive switch for wireless transceiver A transmit-receive switch has a transmit port, an antenna port, and a receive port. A first switch couples the transmit port to the antenna port when a signal TxON is asserted. A LOW_BAND signal indicates the selection of a lower band of frequencies. A tuning struct... | 05/03/2011 |
| 7907555 | RSSI-based powerdown apparatus and method for a wireless communications system A wireless receiver generates quadrature baseband signals which are sampled by a high speed analog to digital converter (IQ ADC) and also uses a receive signal strength indicator (RSSI) which is sampled by an RSSI analog to digital converter (RSSI ADC). The RSSI ADC... | 03/15/2011 |
| 7903907 | Force and deflection sensor with shell membrane and optical gratings and method of manufacture A sensor for force is formed from an elastomeric cylinder having a region with apertures. The apertures have passageways formed between them, and an optical fiber is introduced into these passageways, where the optical fiber has a grating for measurement of tension ... | 03/08/2011 |
| 7870468 | Reed-solomon decoder using a configurable arithmetic processor A Reed Solomon decoder utilizes re-configurable and re-usable components in a granular configuration which provides an upper array and a lower array of repeated Reconfigurable Elementary Units (REU) which in conjunction with a FIFO can be loaded with syndromes and c... | 01/11/2011 |
| 7867366 | Coaxial plasma arc vapor deposition apparatus and method An apparatus for the deposition of a variable thickness coating onto the inside of a cylindrical tube comprises a variable pressure gas, an cathode coaxially positioned within the cylinder, and a voltage source applied between the cathode and cylindrical tube, which... | 01/11/2011 |
| 7844007 | Combined OFDMA preamble index identification, integer frequency offset estimation, and preamble CINR measurement A wireless signal processor for use in identifying a maximum Carrier to Noise Interference Ratio (CINR) associated with a plurality of received OFDMA subcarriers has a candidate generator for forming a plurality of candidate values from a particular set of received ... | 11/30/2010 |
| 7843575 | Reflective piano keyboard scanner A scanner for a keyboard device having a reflective surface for each key has a sensor associated with each key that includes an LED and a photo-transistor. The LED is turned ON for a first measurement, followed by a second measurement with the LED turned off, and a ... | 11/30/2010 |
| 7827779 | Liquid metal ion thruster array A Liquid Metal Ion Thruster (LMIT) has a substrate having a plurality of pedestals, one end of the pedestal attached to the substrate, and the opposing end of the pedestal having a tip, the pedestals having grooves and the substrate also having grooves coupled to ea... | 11/09/2010 |
| 7787975 | Restoring audio signals Methods, systems, and apparatus, including computer program products, for restoring audio signals. A data sequence of samples representing an audio signal is received. Multiple filter coefficients are defined for a filter, and a current sample in the data sequence i... | 08/31/2010 |
| 7761688 | Multiple thread in-order issue in-order completion DSP and micro-controller An in-order issue in-order completion micro-controller comprises a pipeline core comprising in succession a fetch address stage, a program access stage, a decode stage, a first execution stage, a second execution stage, a memory access stage, and a write back stage.... | 07/20/2010 |
| 7724197 | Waveguide beam forming lens with per-port power dividers A parallel plate beam forming lens is formed form at least three parallel plates, and includes a plurality of beam port waveguides, each coupled to a beam port divider with a step increase in waveguide height. The beam port divider comprises a first divider having t... | 05/25/2010 |
| 7679025 | Dense plasma focus apparatus An apparatus for the formation of a dense plasma focus (DPF) has a center electrode formed about an axis, where the center electrode includes a cylindrical part and a tapered part. An outer electrode is formed about the center electrode, and may be either cylindrica... | 03/16/2010 |
| 7657683 | Cross-thread interrupt controller for a multi-thread processor An interrupt controller for a dual thread processor has for a first thread, an interrupt request register accessible to the second thread, an interrupt count accessible to the second thread, and an interrupt acknowledge accessible to the first thread. Additionally, ... | 02/02/2010 |
| 7656970 | Apparatus for a wireless communications system using signal energy to control sample resolution and rate A wireless signal processor includes an analog front end for generating at least one baseband analog signal, at least one analog to digital converter for converting the baseband signal into a digital signal, the analog to digital converter having a resolution width ... | 02/02/2010 |
| 7634000 | Noise estimator for a communications system A SINR estimator receiving a symbol stream has a delay element coupled to the symbol stream to produce a delayed symbol stream, which is also coupled to a conjugator. A first multiplier forms a product from the symbol stream and the output of the conjugator, thereaf... | 12/15/2009 |
