Leland Stanford Junior University

Atheros Communications, Inc.

Qualcomm Incorporated

Teresa H Meng

Ada Shuk Yan Poon

Daniel Michael Pivonka

Anatoly Anatolievich Yakovlev

William John McFarland

John S Thomson

Paul J Husted

Jeffrey M Gilbert

David Kuochieh Su

Masoud Zargari

Won Namgoong

Ardavan Maleki Tehrani

Yi-Hsiu Wang

Krishna V Shenoy

Wing H Wong

Gopal Santhanam

Bevan M Baas

John Thompson

Byron M Yu

Yi-Hsu Wang

Narges Asadi Bani

Caleb T Kemere

Anne S Kiremidjian

Stephen O'Driscoll

Erik G Straser

Described herein are methods of making and using and apparatus for wirelessly communicating data and providing power, particularly from a location exterior to a body and to an implantable device disposed within a body with tissue. The described embodiments provide apparatus and methods for efficiently transfer data and power between an external transceiver and an (implanted) biomedical device. The method is to modulate power carrier, which wirelessly powers the device, using an asynchronous modulation scheme, such as amplitude shift keying (ASK) modulation, with minimal modulation depth in order to not disrupt the power flow. The digital data is encoded in the pulse width, eliminating the need for synchronization to the power carrier signal and further minimizing the power consumption necessary for data transfer. Additionally, a reverse backscatter method for obtaining data from the implant is described that has flexible, low power operation.

Method and apparatus for efficient communication with implantable devices

Described is a locomotive implant for usage within a predetermined magnetic field. In one embodiment magnetohydrodynamics is used to generate thrust with a plurality of electrodes. In another embodiment, asymmetric drag forces are used to generate thrust.

Method of making and using an apparatus for a locomotive micro-implant using active electromagnetic propulsion

The present invention aims at eliminating the effects of frequency offsets between two transceivers by adjusting frequencies used during transmission. In this invention, methods for correcting the carrier frequency and the sampling frequency during transmission are provided, including both digital and analog implementations of such methods. The receiver determines the relative frequency offset between the transmitter and the receiver, and uses this information to correct this offset when the receiver transmits its data to the original transmitter in the return path, so that the signal received by the original transmitter is in sampling and carrier frequency lock with the original transmitter's local frequency reference.

Method and apparatus for eliminating the effects of frequency offsets in a digital communication system

Described is an apparatus and method for increasing a gain of a transmitted power signal in a wireless link when operating in a mid field wavelength that is within a range between wavelength/100 to 100*wavelength and within a medium having a complex impedance between a transmit antenna and a receive antenna. The apparatus and method maximize the gain in the wireless link using simultaneous conjugate matching, to increase power transfer within the transmitted power signal, wherein the simultaneous conjugate matching accounts for interaction between the transmit antenna and the receive antenna, including the complex impedance of the medium between the transmit antenna and the receive antenna.

Wireless power transmission for implantable medical devices

The present inventions provide a locomotive implant for usage within a predetermined magnetic field that includes a capsule body; a wireless power receiver disposed within the capsule body; a plurality of switchable conductors having a predetermined pattern within the capsule body, each of the switchable conductors adapted to pass a current along a forward path to thereby create, in the presence of the predetermined magnetic field, a force and assist in moving the locomotive implant; and a controller adapted to receive directional control signals to control the switchable current wires or conductors. Methods of using the same are described.

In some wireless local area networks (WLANs), signals of different modulation types and rates can be received. To operate optimally, the gain of an amplifier in a receiver can be set based on a specific modulation type and rate. For example, the gain of a receive path amplifier can be changed based on one or more unique identifying characteristics in a received data packet. Once the unique identifying characteristics are located, they can be analyzed to determine which modulation type and rate are represented. The appropriate gain of the amplifier can be set based on the modulation type and rate. Advantageously, subsequent data symbols can be amplified with the set gain, thereby ensuring that the receiver optimally receives those data symbols.

Method and system for optimizing gain changes by identifying modulation type and rate

Circuits, devices and methods for processing learning networks are implemented using a variety of methods and devices. One example involves a circuit-implemented method to identify a relationship of objects in a set of objects. Local scores are generated for the object and possible parents. The local scores indicate relationship strength between object and parent. The results are stored in a memory. A state-machine circuit is used to perform sampling and searching of the parent sets for each data node. The local scores are used to encode orderings of the parent. An algorithm is executed that uses the encoded possible orderings and a random variable to generate and score a current order and a proposed order of the possible parent sets. The proposed orders are accepted or rejected based on probability rules applied to the scores for the current and proposed orders. Structures are sampled to assess a Bayesian-based relationship.

Systems, methods and circuits for learning of relation-based networks

Growing community of inventors

Portola Valley, CA, United States of America

Teresa H Meng