Patent application number | Description | Published |
20080240301 | ARCHITECTURES FOR UNIVERSAL OR SOFTWARE RADIO - A system and technique for providing to flexible, programmable frequency estimators and spectrum analyzers that can operate over extremely large bandwidths and yet provide high spectral resolution are described. The acquisition time and hardware complexity of one technique scale as O(N), where N denotes the number of frequency bins acquired. Embodiments are disclosed in which architectures are implemented using exponentially-tapered transmission lines and filter cascades. | 10-02-2008 |
20080294062 | LOW-POWER ANALOG ARCHITECTURE FOR BRAIN-MACHINE INTERFACES - An ultra-low-power circuit for wireless neural recording and stimulation is provided. The circuit includes a neural amplifier with adaptive power biasing for use in multi-electrode arrays and a decoding and/or learning architecture. An impedance-modulation telemetry system provides low-power data telemetry. Also, the circuit includes a wireless link for efficient power transfer, and at least one circuit for wireless stimulation of neurons. | 11-27-2008 |
20100036457 | CODING FOR VISUAL PROSTHESES - A visual prostheses codes visual signals into electrical stimulation patterns for the creation of artificial vision. In some examples, coding of the information uses image compression techniques, temporal coding strategies, continuous interleaved sampling (CIS), and/or radar or sonar data. Examples of the approach are not limited to processing visual signals but can also be used to processing signals at other frequency ranges (e.g., infrared, radio frequency, and ultrasound), for instance, creating an augmented visual sensation. | 02-11-2010 |
20100198094 | WEARABLE SYSTEM FOR MONITORING PHYSIOLOGICAL SIGNALS - A wearable system for monitoring a plurality of physiological signals is provided. The wearable system includes at least one sensor producing the physiological signals associated with a patient. A processor unit receives the physiological signals from the at least one sensor. The processor unit analyzes the physiological signals to determine the occurrence of a triggered event and produces at least one output signal identifying the triggered event. A transmission unit receives the at least one output signal and prepares for transmission of the at least one output signal. | 08-05-2010 |
20100211364 | ELECTRONIC SYSTEM FOR MODELING CHEMICAL REACTIONS AND BIOCHEMICAL PROCESSES - A system for modeling chemical reactions using analog or hybrid-analog-digital electronic circuits. The system exploits similarities between the kinetic rates of chemical reaction and the rates governing current flow in electronic devices such as bipolar junction transistors (BJTs) and metal oxide semiconductor field effect transistors (MOSFETs) operating at subthreshold conditions. These devices, which accurately model the stochastics of chemical processes, can networked into large array to model chemical reaction networks, including biochemical reactions and genetic processes such as activation, induction, transcription, and translation. | 08-19-2010 |
20120114081 | Architectures For Universal Or Software Radio - A system and technique for providing to flexible, programmable frequency estimators and spectrum analyzers that can operate over extremely large bandwidths and yet provide high spectral resolution are described. The acquisition time and hardware complexity of one technique scale as O(N), where N denotes the number of frequency bins acquired. Embodiments are disclosed in which architectures are implemented using exponentially-tapered transmission lines and filter cascades. | 05-10-2012 |
20130154635 | INTEGRATED NMR TRANSCEIVER ARRAY - The present disclosure relates to an integrated nuclear magnetic resonance (NMR) transceiver array, the array including a plurality of integrated NMR transceiver circuits disposed on a single chip. At least one of the plurality of integrated NMR transceiver circuits includes a transmitter that receives and outputs a radio frequency (RF) pulse train and a receiver that receives an NMR signal. | 06-20-2013 |
20130162247 | REFOCUSING PULSES AND EXCITATION PULSES FOR NMR LOGGING - Illustrative embodiments are directed to applying a nuclear magnetic resonance sequence to a substance within an inhomogeneous static magnetic field. Various embodiments include applying a series of refocusing pulses to the substance, each refocusing pulse in the series of refocusing pulses having at least two segments, and a total pulse duration less than or equal to approximately 1.414 times T | 06-27-2013 |
20130234704 | METHOD AND SYSTEM FOR APPLYING NMR PULSE SEQUENCES WITH INTERACTING SHELLS - A method and system for determining a nuclear magnetic resonance (NMR) property are described herein. The method includes applying a static magnetic field to a substance and applying an NMR pulse sequence to the substance. The NMR pulse sequence comprises a first pulse sequence segment applied at a first frequency to a shell and a second pulse sequence segment applied at a second frequency. The first pulse sequence segment generates a resonant signal in the shell and the second pulse sequence segment generates a characteristic within the resonant signal. The resonant signal is detected and an NMR property is determined using the characteristic within the detected resonant signal. | 09-12-2013 |
20130234705 | METHOD AND SYSTEM FOR APPLYING NMR PULSE SEQUENCES USING DIFFERENT FREQUENCIES - A method and system for applying nuclear magnetic resonance (NMR) sequences to a substance are described herein. The method includes applying an NMR pulse sequence to the substance using a non-resonant transmitter circuit. The NMR pulse sequence includes a first pulse sequence segment applied at a first frequency to a first shell within the substance and a second pulse sequence segment applied at a second frequency to a second shell. The second pulse sequence segment is initiated before the first shell reaches thermal equilibrium. In some cases, the first pulse sequence segment and the second pulse sequence segment are interposed within each other. Such NMR pulse sequences, with multiple pulse sequence segments, can also be applied to different atomic nuclei. | 09-12-2013 |
20130234706 | SYSTEM AND METHOD FOR PROCESSING MAGNETIC RESONANCE SIGNALS - A broadband magnetic resonance (MR) receiver is described herein. The MR receiver can be used to process nuclear magnetic resonance (NMR) signals. The MR receiver includes a transformer that amplifies the MR signals and a preamplifier that receives the MR signals from the transformer. The preamplifier includes a common-drain amplifier stage and a common-source amplifier stage. | 09-12-2013 |
20150077102 | METHOD AND SYSTEM FOR APPLYING NQR PULSE SEQUENCES - A method and system for applying nuclear quadrupole resonance (NQR) sequences to a substance and determining presence of a chemical species within the substance using the sequences are described herein. The method includes applying an NQR pulse sequence to the substance using a non-resonant transmitter circuit. The method further includes detecting a NQR signal within the substance and determining presence of a chemical species within the substance using the NQR signal. | 03-19-2015 |