1161 results about "Rf transmission" patented technology

Abstract of the Disclosure

An implantable analyte sensor including a sensing region for measuring the analyte and a non-sensing region for immobilizing the sensor body in the host. The sensor is implanted in a precisely dimensioned pocket to stabilize the analyte sensor in vivo and enable measurement of the concentration of the analyte in the host before and after formation of a foreign body capsule around the sensor. The sensor further provides a transmitter for RF transmission through the sensor body, electronic circuitry, and a power source optimized for long-term use in the miniaturized sensor body.

Abstract of the Disclosure

An implantable analyte sensor including a sensing region for measuring the analyte and a non-sensing region for immobilizing the sensor body in the host. The sensor is implanted in a precisely dimensioned pocket to stabilize the analyte sensor in vivo and enable measurement of the concentration of the analyte in the host before and after formation of a foreign body capsule around the sensor. The sensor further provides a transmitter for RF transmission through the sensor body, electronic circuitry, and a power source optimized for long-term use in the miniaturized sensor body.

Abstract of the Disclosure

An implantable analyte sensor including a sensing region for measuring the analyte and a non-sensing region for immobilizing the sensor body in the host. The sensor is implanted in a precisely dimensioned pocket to stabilize the analyte sensor in vivo and enable measurement of the concentration of the analyte in the host before and after formation of a foreign body capsule around the sensor. The sensor further provides a transmitter for RF transmission through the sensor body, electronic circuitry, and a power source optimized for long-term use in the miniaturized sensor body.

Systems and methods for implantable devices that transmit and receive RF transmissions are provided. More particularly, the implantable device includes an antenna encapsulated within a non-hermetic material, wherein the antenna is spaced from the non-hermetic material by an air gap. Preferably, the spacing is provided by one or more enclosures that maintain the air gap surrounding the antenna during and after the manufacture of the device. The one or more enclosures can be in the form or tubing formed from glass, or the like, at least partially surrounding the antenna. By increasing the amount of air encapsulated within the implantable device, and particularly proximal to (e.g., around) the antenna, the susceptibility to changes in RF performance is reduced.

A method of generating a user?s location using a mobile device. The method comprises, determining a signal snapshot on the mobile device, the signal snapshot describing characteristics of unregulated radio frequency (RF) transmissions detectable by the mobile device. Generating the user?s location on the mobile device using the signal snapshot and at least one additional input from the mobile device. The generating and determining are iteratively repeated. The unregulated RF transmission can comprise WiFi signals.

An integrated controller for complete automation with the ability to control electrical devices through both RF transmission and IR transmissions. In one illustrative embodiment, the integrated controller comprises an antenna for two-way communication with stations located throughout a structure. Each station may control the power supply to an attached electrical device. The buttons on the station may control any electrical device on the system through RF transmission with the integrated controller. The integrated controller also may comprise an IR receiver and at least one IR output. The IR receiver may receive signals from a remote and pass them through to a device, such as a device used in a home theater system, with a built in IR receiver via the IR output. In this manner, the integrated controller is capable of providing complete in home automation.

A handheld device receives a wireless RF transmission that includes multiple video streams and buffers all video streams or selected video streams based on an identification of video streams to buffer. The device might also buffer all or selected audio streams or other real-time data content that is received in the wireless RF transmission. The wireless RF transmission may include a set of video streams (and/or audio streams, and/or other real-timed data) for the handheld device to buffer. A head end that sends the RF transmission may determine which streams to buffer based on operator input, user preferences, and other factors. Alternatively, the handheld device may automatically determine which streams to buffer based on information such as user preferences and information in the RF transmission. Alternatively, a user may select which streams to buffer.

Devices, systems, and methods for responding to emergency situations of infants, children and pets left unattended in a vehicle. The device comprises a control module for short range RF transmission housed in a lightweight, portable unit plugged into a vehicle accessory power outlet. The system may additionally comprise sensors in communication with the module to detect and trigger alarms, including: when a vehicle has been in a collision; whether a child has climbed out of a car seat while the vehicle is in motion; when the temperature within the vehicle is unsafe; whether an infant has been left unattended in a vehicle; and whether children are playing in a parked vehicle (e.g. trunk) in unsafe temperatures. The portable device may also be configured with an “SOS” button housed within a key fob, wristband, or necklace, to transmit GPS coordinates of the wearer in emergency situations (such as kidnappings).

Apparatuses, systems and methods for limiting mobile device functionality in defined environments. One system includes a detection structure or arrangement for detecting illicit mobile device RF transmissions and/or an operating state in relation to a defined environment, and an interference or disabling structure or arrangement for at least partially disabling the functionality of the mobile device upon detection of an illicit mobile device RF transmission or a particular operating state. For instance, the system may be implemented in an automobile or aircraft cabin to prevent drivers and/or passengers from utilizing at least one functionality of a mobile device (e.g., talking, texting, Internet surfing).

A home automation system using an infrared (IR)/radio frequency (RF) integration remote control module based on a network. At least one IR/RF integration remote control module (100) is disposed at a predetermined location of a home automation region. The IR/RF integration remote control module (100) with a wireless interface function integrates an RF modulation/reception/transmission function and an IR modulation/reception/transmission. A set-top box (200) is appropriately disposed so that it can carry out an interface function for controlling the IR/RF integration remote control module (100) and a wired/wireless Internet access function. The set-top box (200) receives various control commands over an Internet network using transmission control protocol/Internet protocol (TCP/IP) and controls the IR/RF integration remote control module (100). Even though various pieces of equipment using the conventional IR reception/transmission scheme or a new electronic product equipped with an RF module is added to the home automation system using an RF modulation scheme, an automation operation and a bidirectional control operation based on the integrated IR and RF transmission scheme can be appropriately carried out. Thus, the home automation system and method can be cost-effectively and conveniently implemented.

An apparatus includes: an affine transformer that subjects input complex IF signals I(t) and Q(t) to affine transformation according to affine transformation coefficients, and outputs compensated signals a(t) and b(t); a quadrature modulator that applies quadrature modulation on a local oscillation signal according to the compensated signals, and outputs a modulated signal (RF transmission signal); a quadrature detector that removes a carrier component from the modulated signal and outputs complex feedback signals I′ (t) and Q′ (t); and a control portion that extracts linear distortions remaining in the complex feedback signals I′ (t) and Q′ (t) as plural distortion coefficients (DC offsets of the I-phase and the Q-phase, an IQ gain ratio, and a deviation in orthogonality), and updates the current affine transformation coefficients in accordance with updating equations including the distortion coefficients to set updated affine transformation coefficients again in the affine transformation portion. It is thus possible to constantly update the distortion compensation coefficients most appropriately under operating conditions.

Wireless devices form a significant portion of equipment forming the source/destination of content transmitted over telecommunications infrastructure together with applications such as RF identification, smart tags, etc. As such the wireless spectrum supports these devices operating to multiple standards, both licensed and unlicensed. In many environments it would be beneficial for a network administrator to know whether the environment and network they are responsible for is compliant to policies established in dependence of the environment/network. The invention provides distributed wireless signal analyzers within the environment/network to provide signal/spectrum analysis and determine whether received signals by the wireless signal analyzer are compliant to the network administrator policy. Compliance may be based upon time or frequency domain measurements with different rules for different wireless spectrum regions. Non-compliance is communicated to remote servers and/or network administrator and allows local control of network equipment.

Methods and apparatus for use in controlling the loading of wireless access points (APs) in a wireless local area network (WLAN) in support of legacy terminals are disclosed. The WLAN has at least a first AP and a second wireless AP adjacent the first wireless AP. An indication which indicates whether a loading of the second wireless AP is greater than a predetermined threshold is identified. When the indication indicates thai the loading is greater than the predetermined threshold, a first nominal radio frequency (RF) transmission power of the first wireless AP is increased in order to increase a first RF coverage area of the first wireless AP. A second nominal RF transmission power of the second wireless AP is correspondingly reduced in order to reduce a second RF coverage area of the second wireless AP. In response, some of the mobile communication devices initially operating with the second wireless AP are switched to operate with the first wireless AP in order to reduce the loading of the second wireless AP. The techniques may be embodied in a centralized approach where transmission control equipment of the WLAN controls each wireless APs in this manner, or alternatively in a distributed non-centralized approach where each wireless AP acts independently and autonomously in the same or similar manner. Preferably, the techniques do not require the functional requirements of mobile devices to modified and therefore are suitable for use with existing legacy devices.

A system and method for providing telephone type services over the internetwork commonly known as the Internet. Wireless digital telephones in communication with wireless digital communications systems have speech coders that generate digital voice samples, and encoders that encode the digital voice samples to minimize bit errors during RF transmission. The wireless digital communications system demodulates the received modulated wireless signal transmitted by the digital telephone to recover the encoded, digital voice samples. The error correction codes within the encoded, digital voice samples are removed to recover the original digital voice samples generated by the vocoder in the digital telephone. The decoded digital voice samples are then supplied to a gateway interface that packetizes the decoded digital voice samples into digital voice sample segments, assigns a packet address corresponding to the destination telephone number, and outputs the digital voice sample segments as data packets onto a packet switched network, such as the Internet, for reception by a network node corresponding to the destination address.

The field of wireless communications is related, especially the technique of transmitting uplink sounding reference signal (SRS) by a mobile terminal with multiple transmission antennas is related. A method for receiving uplink sounding reference signal includes the following steps: receiving the SRS signals, which are respectively transmitted from respective radio frequency transmission modules of the mobile terminal according to the respectively allocated Transmission Comb (TC) values and Cyclic Shift (CS) values when the transmission period arrives, wherein TC values and/or CS values allocated for any two radio frequency transmission modules are different; determining the radio frequency transmission module corresponding to every received SRS signal according to the TC values and CS values respectively allocated for respective radio frequency transmission modules. A device for receiving uplink sounding reference signal, a method and a device for transmitting uplink sounding reference signal are also provided. Because different TC values and/or different CS values are allocated for respective radio frequency transmission modules, (multiple) radio frequency transmission modules can transmit SRS signals through (multiple) transmission antennas during the same transmission period by way of Frequency Division Multiplex (FDM) or Code Division Multiplex (CDM).

A method and system for performing invasive procedures includes a surgical robot which is controlled by a guidance system that uses time of flight calculations from RF transmitters embedded in the robot, surgical instrument, and patient anatomy. Sensors around the room detect RF transmissions emitted by the RF transmitters and drive the robot according to a preprogrammed trajectory entered into the guidance system.

The present invention relates to systems and methods that provide a user the ability to selectively setup a device with limited functionality for another user. The systems and methods can be employed in connection with devices such as a cell phone, a personal computer and the like, wherein the owner can generate and activate various modes of functionality associated with one or more guest users. The foregoing allows the owner to selectively lock out features such as RF transmission in order to mitigate activation of billable services without the owner's consent. The modes of functionality can be configured such that the owner can activate a particular mode at any given time for a particular or any user, or a mode can be activated based on information related to the current user. The foregoing provides for increased device flexibility, efficiency, security and shareability, while mitigating undesired user activity.

The present invention provides an electronic finger ring (1) for wireless, 4-dimensional remote steering and/or monitoring. The electronic finger ring comprises electronic components packaged and integrated in different ways to obtain either omni- or unidirectional RF transmission dependent on its application, e.g. acting as a multiple steering device communicating with nearby electronic devices wirelessly or for wireless user medical diagnostics.

In this invention, a radio frequency identification overlay network that automates the discovery and configuration management of all physical fiber optic connections within a distributed communications network is disclosed. Miniaturized, low crosstalk RFID tags at a first fiber optic receptacle location and miniature, distributed, multiplexed reader antenna at a distant, second fiber optic receptacle location are joined by a fiber optic link which transmits both optical data and RF electronic signals. This electronic-fiber optic interface is comprised of two separated, miniaturized resonant antenna in communication with another through a resonant RF transmission line integral to the fiber optic cable. This RFID overlay network is comprised of multiplexed RFID readers, RF resonant fiber optic cables, and miniaturized RFID tags attached to the connector receptacles of network elements. The RFID overlay network interrogates tags automatically and remotely through the RF transmissive and optically transmissive fiber optic patch cords, eliminating the need for manual readout by technicians.

The present invention provides an RF transmission leakage mitigator for use with a full-duplex, wireless transceiver. In one embodiment, the RF transmission leakage mitigator includes an inversion generator configured to provide an RF transmission inversion signal of an interfering transceiver RF transmission to a receiving portion of the transceiver thereby creating a residual leakage signal. Additionally, the RF transmission leakage mitigator also includes a residual processor coupled to the inversion generator and configured to adjust the RF transmission inversion signal of the interfering transceiver RF transmission based on reducing the residual leakage signal to a specified level.

Medium-range and global network information and control for a vehicle is achieved with a portable wireless key fob, a user-provided nomadic device, and a vehicle-installed telematics unit including a medium-range RF transceiver and a wireless network transceiver. The fob includes a medium-range RF transceiver for bi-directional communication with the telematics unit, and a short-range wireless transceiver for bi-directional communication with the nomadic device. The fob communicates with the telematics unit in a conventional manner, and also relays information between the telematics unit and the nomadic device. If a communication initiated via the fob cannot be completed because the fob is out of range, the communication is sent to the nomadic device for network transmission to the telematics unit. If a communication initiated via the nomadic device cannot be completed due to inadequate signal reception, the communication is sent to the fob for RF transmission to the telematics unit.