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Forrester, CA
Aracely Forrester, San Diego, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20110069749 | NONLINEAR EQUALIZER TO CORRECT FOR MEMORY EFFECTS OF A TRANSMITTER - Techniques for correcting for memory effects of a transmitter are described. In an exemplary design, a receiver obtains input samples including a desired signal transmitted by a transmitter having memory effects. The receiver performs nonlinear equalization on the input samples to obtain first equalized samples, performs linear equalization on the input samples to obtain second equalized samples, and determines output samples based on the first and second equalized samples. The nonlinear equalization corrects for the memory effects and nonlinearities of the transmitter and possibly nonlinearities and memory effects of the receiver. The receiver may jointly determine coefficients for both linear and nonlinear equalization based on an adaptive algorithm. The receiver processes (e.g., demodulates and decodes) the output samples to recover data sent in the desired signal by the transmitter. | 03-24-2011 |
Aracely W. Forrester, San Diego, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100033246 | ADAPTIVE DIGITAL PREDISTORTION OF COMPLEX MODULATED WAVEFORM USING PEAK AND RMS VOLTAGE FEEDBACK FROM THE OUTPUT OF A POWER AMPLIFIER - Exemplary embodiments of the invention includes an amplifier and a processor that adapts a baseline or previous model of the input-output signal characteristic of the amplifier using metrics of the system, including peak power, peak voltage, average power, root mean square (RMS) voltage, samples of the output signal of the amplifier, or environmental metrics such as temperature, power supply voltage, signal frequency, etc. In particular, the system comprises an amplifier; a device to measure a metric of the system; a processor to generate a present model of the input-output signal characteristic of the amplifier based on the system metric; and a predistortion device to predistort the input signal for the amplifier based on the present amplifier model. | 02-11-2010 |
| 20100271123 | ADAPTIVE DIGITAL PREDISTORTION OF COMPLEX MODULATED WAVEFORM USING LOCALIZED PEAK FEEDBACK FROM THE OUTPUT OF A POWER AMPLIFIER - Exemplary embodiments of the invention includes an amplifier and a processor that adapts a baseline or previous model of the input-output signal characteristic of the amplifier using metrics of the system, including peak power, peak voltage, average power, root mean square (RMS) voltage, samples of the output signal of the amplifier, etc. In particular, the system comprises an amplifier; a device to measure a metric of the system; a processor to generate a present model of the input-output signal characteristic of the amplifier based on the system metric as determined through a localized sampling window of the output signal; and a predistortion device to predistort the input signal for the amplifier based on the present amplifier model. | 10-28-2010 |
| 20110103455 | ADAPTIVE DIGITAL POST DISTORTION REDUCTION - A method for adaptive digital post distortion reduction is described. An analog radio frequency (RF) signal is received. The frequency of the analog RF signal is downconverted using analog circuitry. The analog RF signal is converted to a digital signal using an analog to digital converter (ADC). Digital post distortion reduction is applied to the digital signal to reduce nonlinearities in the digital signal. | 05-05-2011 |
James S. Forrester, Malibu, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20110280834 | METHODS AND COMPOSITIONS FOR CARDIAC TISSUE REGENERATION - Methods for treating an injured cardiac tissue in a subject are provided herein. Methods for improving survival, engraftment and proliferation of stem cells in a cardiac tissue are provided. Also provided are methods for generating cardiac cells. Further provided are compositions for generating cardiac cells in a subject. | 11-17-2011 |
John A. Forrester, San Diego, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20120021707 | APPARATUS AND METHOD FOR ADJUSTMENT OF TRANSMITTER POWER IN A SYSTEM - Certain aspects of the present disclosure propose methods for determining power level of one or more transmitters based on a power level of a primary transmitter when the transmitters are located in close proximity of each other. The power levels may be determined such that a combined power of all the transmitters is compliant with regulatory radio frequency (RF) safety requirements. For certain aspects, power level of the lower priority transmitters may be determined utilizing one or more look-up tables. For another aspect, power level of the lower priority transmitters may be calculated using an algorithm based on the power level of the priority transmitter. In aspects, the power level of lower priority transmitters and the time duration for which the transmitters are active may be selected dynamically so that the time averaged power of the transmitters for a defined period of time falls below the RF exposure limit. | 01-26-2012 |
Paul H. Forrester, San Jose, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100223466 | SHARED SCALABLE SERVER TO CONTROL CONFIDENTAL EVENT TRAFFIC AMONG RECORDATION TERMINALS, ANALYSIS ENGINES, AND A STORAGE FARM COUPLED VIA A PUBLIC NETWORK - A highly secure event server receiving and storing encrypted assets and references to those assets over a public wide area network. A system for selectively decrypting and transmitting references to analysis clients such as authenticated mutually unconscious users, and retrieving, decrypting and transmitting certain assets from high-volume storage, distributed storage, or in transit. A method for controlling a plurality of event recordation clients and a plurality of analysis clients transmitting policies and commands requesting upload of assets and obtaining status solely by receiving client initiated sessions. | 09-02-2010 |
| 20110055895 | Shared scalable server to control confidential sensory event traffic among recordation terminals, analysis engines, and a storage farm coupled via a non-proprietary communication channel - A highly secure sensory stream event server receiving and storing encrypted assets and references to those assets over a non-proprietary communications channel. A system for selectively decrypting and transmitting references to analysis clients such as authenticated mutually unconscious users, and retrieving, decrypting and transmitting certain assets from high-volume storage, distributed storage, or in transit. A method for controlling a plurality of sensory stream event recordation clients and a plurality of analysis clients transmitting policies and commands requesting upload of assets and obtaining status solely by receiving client initiated sessions. | 03-03-2011 |
Thomas C. Forrester, Brentwood, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20110157695 | PROJECTION SCREEN FOR DISPLAYING TWO-DIMENSIONAL AND THREE-DIMENSIONAL MOTION PICTURES AND METHOD OF USE THEREOF - The present disclosure reveals a reflective, front-projection screen designed to faithfully and accurately display the images from state-of-the-art (SOTA) and next-generation 2D and 3D motion-picture projectors, such as those found in large-capacity public movie theaters, home theaters, offices, and for use with portable projection systems for consumer and commercial applications. In particular it discloses cinema-size light shaping 3D projection screens with front-surface microstructures and horizontal viewing angles in the range of 90 to 120 degrees. | 06-30-2011 |
Thomas C. Forrester, Bel Air, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090185302 | Light concentrator structures and methods - An arrangement utilizes diffractive, reflective and/or refractive optical elements combined to intensify and homogenize electromagnetic energy, such as natural sunlight in the terrestrial environment, for purposes such as irradiating a target area with concentrated homogenized energy. A heat activated safety mechanism is also described. | 07-23-2009 |
Tim Forrester, San Diego, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090073899 | Common Mixer Methods and Circuits in Mobile Communication Devices - GPS functionality is added to a wireless communication device in an efficient and cost effective manner. Disclosed is a wireless communications device that has a common mixer constructed to be used for a GPS signal and another signal, a common IF filter constructed to be used for a GPS signal and another signal, in addition to other cost effective embodiments. | 03-19-2009 |
Timothy Forrester, San Diego, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20080214243 | COMMUNICATION DEVICE WITH DIVERSITY ANTENNA - A method and apparatus is disclosed for improving signal reception in a wireless communication device by selectively processing one of two or more signals received over two or more antennas that are configured at least partially orthogonal. In one embodiment, the signal source selection is based on comparison of a signal error rate to a threshold value. Error rates in excess of the threshold value may initiate a switching apparatus to selectively enable signal reception from a different antenna to improve the error rate. In one embodiment, amplifiers are located between the switching apparatus and the two or more antennas to thereby reduce noise. In an alternative embodiment control signals selectively enable and disable the amplifiers to control signal reception. | 09-04-2008 |