Forrester, CA
Aracely Forrester, San Diego, CA US
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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
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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
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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 Forrester, San Diego, CA US
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20130109369 | CONTROLLING ACCESS TO A MOBILE DEVICE | 05-02-2013 |
20140235225 | CONTROLLING ACCESS TO A MOBILE DEVICE - Various arrangements for customizing a configuration of a mobile device are presented. The mobile device may collect proximity data. The mobile device may determine that a user has gripped the mobile device based on the proximity data. A finger length of the user may be determined using the proximity data. Configuration of the mobile device may be customized at least partially based on the determined finger length of the user. | 08-21-2014 |
John A. Forrester, San Diego, CA US
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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 |
20120270519 | SYSTEMS AND METHODS FOR DYNAMIC TRANSMISSION POWER LIMIT BACK-OFF FOR SPECIFIC ABSORPTION RATE COMPLIANCE - This disclosure provides systems, methods and apparatus for providing transmission power limit back-off for Specific Absorption Rate (SAR) compliance. In one aspect, a method implemented in a wireless communication apparatus is provided. The method includes receiving an indication of at least one operating mode indicative of a proximity and an orientation of at least one transmitting antenna of the wireless communication apparatus. The method further includes determining a power transmission characteristic based on the determined operating mode and at least one of a radio access technology type, a band-class, a transmission configuration, an uplink channel, a traffic state, and a radio access technology transmission state used by the wireless communication apparatus, or any combination thereof. | 10-25-2012 |
20120270592 | SYSTEMS AND METHODS FOR DYNAMIC TRANSMISSION POWER LIMIT BACK-OFF FOR SPECIFIC ABSORPTION RATE COMPLIANCE - This disclosure provides systems, methods and apparatus for providing transmission power limit back-off for Specific Absorption Rate (SAR) compliance. In one aspect, a method implemented in a wireless communication apparatus is provided. The method includes receiving an indication of at least one operating mode indicative of a proximity and an orientation of at least one transmitting antenna of the wireless communication apparatus. The method further includes selecting from a plurality of transformations associated with the at least one operating mode. The method further includes applying a selected transformation to adjust a relationship between a power transmission level of a first transmitter and a power transmission level of a second transmitter. The method further includes determining a target power transmission level of the first transmitter based on the adjusted relationship and a current power transmission level of the second transmitter. | 10-25-2012 |
Paul H. Forrester, San Jose, CA US
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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 Forrester, Los Angeles, CA US
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20130117789 | DEVICE AND METHOD FOR RENDERING AND DELIVERING 3-D CONTENT - A device and method are provided for delivering three-dimensional (3-D) content. The device includes a receiving unit configured to receive a first signal containing at least two-dimensional (2-D) content, a processing unit configured to (i) determine an amount of a difference in the content in the first signal to be visualized by a left visual sensor and a right visual sensor, (ii) determine whether the amount of the difference is less than or equal to a predetermined minimum value, and to discard the signal to be visualized by one of the right and left visual sensors when the amount is determined to be less than or equal to the predetermined minimum value, and (iii) generate a second signal containing the 2-D content of the first signal and 3-D content in which the first signal to be visualized by the one of the right and left visual sensor sensors is discarded. | 05-09-2013 |
20150015670 | DEVICE AND METHOD FOR RENDERING AND DELIVERING 3-D CONTENT - A device for delivering 3-D content includes a receiving unit configured to receive a first signal containing 2-D content, and a processing unit configured to (i) determine an amount of a difference in the content in the first signal to be visualized by a left visual sensor and a right visual sensor, (ii) determine whether the amount of the difference is less than or equal to a predetermined minimum value, (iii) to discard the signal to be visualized by one of the left visual sensor and the right visual sensor when the amount of the difference is determined to be less than or equal to the predetermined minimum value, and (iv) generate a second signal containing the 2-D content of the first signal and 3-D content in which the first signal to be visualized by the one of the left visual sensor and the right visual sensor is discarded. | 01-15-2015 |
Thomas C. Forrester, Bel Air, CA US
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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 |
20120211647 | 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. | 08-23-2012 |
20150053254 | 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. | 02-26-2015 |
Thomas C. Forrester, Brentwood, CA US
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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 |
20120250150 | 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. | 10-04-2012 |
Thomas C. Forrester, Torrance, CA US
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20150370055 | Non-Imaging Solar Concentrator and Cosine Factor Correction Device Using Compound Polyhedral Surfaces and Method of Use Thereof - A compound polyhedral concentrator (CPOC) lens is disclosed with one smooth curved surface facing the sun and an inner surface comprised of a 3D pattern of interpenetrating minimum deviation prisms with a common origin facing the absorber. This new type of stationary solar concentrator is used to extend the acceptance angles by minimizing blocking and tip optical losses that are common with radial Fresnel design forms. Moreover, when considering the extended time period for non-tracking of the sun's movement commensurate with the increased acceptance angles the total energy collected using a combination of a CPOC lens and a photovoltaic device will be greater than the total energy collected using the photovoltaic device by itself. | 12-24-2015 |
Tim Forrester, San Diego, CA US
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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
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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 |
Timothy D. Forrester, San Diego, CA US
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20130040581 | TUNABLE FILTER FEEDBACK TO CONTROL ANTENNA SWITCH DIVERSITY - A method, antenna switching integrated circuit (IC), and communications device that connect a transmitter to a selected antenna to propagate at least one transmission signal to the selected one of at least two antennas, based on feedback information associated with one or more antennas. An antenna tuning and switching (ATS) controller receives feedback information about a current status of an antenna tuner, wherein the current status of the antenna tuner is either locked or unlocked. In response to the current status of the antenna tuner being in a locked state, the ATS controller triggers an antenna selection switch to connect the antenna (that is associated with the antenna tuner) to the transmitter in order to propagate the transmission signal(s) from the transmitter to the antenna. If the antenna tuner is in an unlocked state, the ATS controller selects a different antenna that is not associated with an antenna tuner. | 02-14-2013 |