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Ba, US
Ben Ba, Boise, ID US
| Patent application number | Description | Published |
|---|---|---|
| 20090086565 | System and Method for Processing Signals in High Speed DRAM - A method is disclosed for operating a memory device, including providing a timing signal comprising a plurality of clock cycles, providing an activate signal, and providing a bank address signal. An activate command executes on every first duration of clock cycles, and the bank address signal is high for at least a portion of the first duration of clock cycles. In one embodiment, the first duration of the activate signal is at least four clock cycles, and the bank address signal is at least one clock cycle. A memory device having a row decoder and an active driver is also provided. | 04-02-2009 |
| 20110205831 | SYSTEM AND METHOD FOR PROCESSING SIGNALS IN HIGH SPEED DRAM - A method is disclosed for operating a memory device, including providing a timing signal comprising a plurality of clock cycles, providing an activate signal, and providing a bank address signal. An activate command executes on every first duration of clock cycles, and the bank address signal is high for at least a portion of the first duration of clock cycles. In one embodiment, the first duration of the activate signal is at least four clock cycles, and the bank address signal is at least one clock cycle. A memory device having a row decoder and an active driver is also provided. | 08-25-2011 |
Demba Elimane Ba, Somerville, MA US
| Patent application number | Description | Published |
|---|---|---|
| 20110317522 | SOUND SOURCE LOCALIZATION BASED ON REFLECTIONS AND ROOM ESTIMATION - Described is modeling a room to obtain estimates for walls and a ceiling, and using the model to improve sound source localization by incorporating reflection (reverberation) data into the location estimation computations. In a calibration step, reflections of a known sound are detected at a microphone array, with their corresponding signals processed to estimate wall (and ceiling) locations. In a sound source localization step, when an actual sound (including reverberations) is detected, the signals are processed into hypotheses that include reflection data predictions based upon possible locations, given the room model. The location corresponding to the hypothesis that matches (maximum likelihood) the actual sound data is the estimated location of the sound source. | 12-29-2011 |
Demba Elimane Ba, Cambridge, MA US
| Patent application number | Description | Published |
|---|---|---|
| 20080240463 | Enhanced Beamforming for Arrays of Directional Microphones - A novel enhanced beamforming technique that improves beamforming operations by incorporating a model for the directional gains of the sensors, such as microphones, and provides means of estimating these gains. The technique forms estimates of the relative magnitude responses of the sensors (e.g., microphones) based on the data received at the array and includes those in the beamforming computations. | 10-02-2008 |
Seydou N. Ba, Richardson, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20090051426 | Large-Dynamic-Range Lookup Table for a Transmitter Predistorter and System and Method Employing the Same - A predistorters for use with a nonlinear element and methods of predistorting for a nonlinear element for use in a 3G, e.g., WCDMA transmitter. In one embodiment, the predistorter includes: (1) a lookup table having non-uniformly spaced entries therein, (2) a compander configured to compand an input signal based on a nonlinearity of the nonlinear element to address the entries and (3) an interpolation offset calculation circuit associated with the lookup table and configured to produce an output based on a value of the input signal and a linear interpolation involving at least two entries from the lookup table. | 02-26-2009 |
| 20090054000 | Apparatus and Method for Adaptive Polar Transmitter Linearization and Wireless Transmitter Employing the Same - A polar transmitter and a method of linearizing a polar transmitter. In one embodiment, the transmitter includes: (1) a transmit chain having a predistorter configured to employ first amplitude and phase compensation lookup tables to carry out predistortion in the transmit chain, (2) a receiver coupled to the transmit chain and (3) predistortion compensation circuitry associated with the receiver and configured to update second amplitude and phase compensation lookup tables associated therewith based on at least one signal from the transmit chain, the values in the updated second amplitude and phase compensation lookup tables thereby available for subsequent predistortion. | 02-26-2009 |
| 20090054016 | Apparatus and Method for Adaptive Cartesian Transmitter Linearization and Wireless Transmitter Employing the Same - A Cartesian transmitter and a method of linearizing a Cartesian transmitter. In one embodiment, the transmitter includes: (1) a transmit chain configured to receive an input signal having in-phase and quadrature components and having a predistorter configured to employ at least one compensation lookup table to carry out in-phase and quadrature compensation predistortion with respect to the input signal, a combiner configured to combine outputs of the predistorter and a nonlinear element configured to process an output of the combiner, (2) a receiver coupled to the transmit chain and (3) predistortion compensation circuitry associated with the receiver and configured to update the at least one compensation lookup table based on the input signal and a signal from the receiver. | 02-26-2009 |
Seydou Nourou Ba, Dallas, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20100158155 | SYSTEM AND METHOD FOR TRAINING PRE-INVERSE OF NONLINEAR SYSTEM - A circuit for use with an amplification circuit having a predistortion datapath portion, a power amplifier portion and a gain portion. The predistortion datapath portion can output a predistorted signal based on the input signal. The power amplifier portion can output an amplified signal based on the predistorted signal. The gain portion can output a gain output signal based on the amplified signal. The circuit comprises a digital predistortion adaptation portion and a combiner. The digital predistortion adaptation portion can output a predistortion adaptation portion output signal. The combiner can output an error signal. The predistortion adaptation portion output signal is based on the input signal, the gain output signal and the error signal. The error signal is based on the difference between the predistorted signal and the predistortion adaptation portion output signal. | 06-24-2010 |
Seydou Nourou Ba, Richardson, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20100035554 | Adaptive Complex Gain Predistorter for a Transmitter - Symbols are transmitted in a Cartesian transmitter by pre-distorting an input signal X having in-phase and quadrature components using a first compensation lookup table operable to hold complex valued entries to carry out in-phase and quadrature compensation pre-distortion with respect to the input signal to form a pre-distorted signal Z. The pre-distorted signal Z is processed to form an output signal Y using a nonlinear element. A complex gain normalization parameter adaptively updated to reflect varying gain of a linear region of the nonlinear element. A normalized feed back signal {tilde over (Y)} is formed using the adaptively updated complex gain normalization parameter. The first compensation lookup table is updated based on the pre-distorted input signal Z and the adaptively normalized feedback signal {tilde over (Y)}. | 02-11-2010 |
Yong Ba, Monrovia, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20080318907 | Nitroxide Free Radical Synergized Antineoplastic Agents - Nitroxide free radicals attached to antineoplastic agents can synergize their potencies to cancer cells. This invention relates to any antineoplastic agents and their derivatives chemically attached with nitroxide free radicals, such as TEMPO and its radical derivatives. This invention also relates to precursors of such compounds, as well as the products formed from the adducts after administration. | 12-25-2008 |
Zheng Feng Ba, Birmingham, AL US
| Patent application number | Description | Published |
|---|---|---|
| 20110021981 | Methods And Compositions For Treating Trauma-Hemorrhage Using Estrogen And Derivatives Thereof - Disclosed are methods and materials for treating or preventing complications due to traumatic injuries using estrogen or derivatives thereof. | 01-27-2011 |