Patent application number | Description | Published |
20120064829 | MOBILE DEVICE INPUT/OUTPUT INTERFACE EXPANSION DEVICE AND SYSTEM HAVING THE SAME - A method and apparatus is disclosed herein for providing an I/O extension for a mobile device. In one embodiment, the apparatus comprises: a first interface to the mobile device; a second interface to a cloud; a third interface to a display device; a fourth interface to one or more user input devices; and a controller, coupled to the first, second, third and fourth interfaces, to coordinate information exchange between the mobile device, the cloud and the one or more user input devices to enable display on the display device of data from the mobile device and the cloud, including full-resolution rendered web pages from a full browser running on the mobile device. | 03-15-2012 |
20130234536 | METHOD AND SYSTEM TO CONTROL AMBIENT RF ENERGY FOR WIRELESS DEVICES - A method and apparatus is disclosed herein for controlling radio-frequency (RF) energy for wireless devices. In one embodiment, the method comprises determining to increase radio-frequency (RF) energy available to power a wireless tag and controlling the RF energy delivered to the wireless tag to provide tag energy, using one or more of: a) increasing transmission RF power of one or more wireless communication devices, b) increasing a duty cycle associated with wireless transmissions of one or more wireless communication devices, and c) decreasing path loss of the power to the wireless tag. | 09-12-2013 |
20130234835 | PROGRAMMATIC CONTROL OF RFID TAGS - Techniques that enable a device to advertise its mode of operation using an RFID tag attached to the device. Techniques are provided for programmatically controlling an RFID tag. An RFID tag attached to a device is programmatically enabled or disabled depending upon the mode(s) of operation of the device. The RFID tag is able to transmit a signal when enabled and not able to transmit a signal when disabled. Using such a controllable RFID tag, a device can efficiently indicate or advertise its mode of operation to an RFID reader or sensor. | 09-12-2013 |
20130238265 | METHOD AND APPARATUS FOR MEASURING RADIO-FREQUENCY ENERGY - A method and apparatus is disclosed herein for measuring radio-frequency energy. In one embodiment, the apparatus comprises one or more antennas, a wideband radio frequency detector (e.g., a logarithmic amplifier (LogAmp)) coupled to the one or more antennas to measure ambient RF energy, wherein the wideband radio frequency detector has an analog output indicative of RF input power received by the one or more antennas, and an analog-to-digital converter coupled to the wideband radio frequency detector to convert the analog output to a digital value, the digital value being applied to a calibration function, to provide a number representing RF energy. | 09-12-2013 |
20130265140 | LOW POWER RADIO FREQUENCY COMMUNICATION - A method, system and tag for low power radio frequency communication are described. In one embodiment, the RF tag comprises: a radio, an energy harvesting unit operable to convert incident RF energy to direct current (DC), a storage unit to store recovered DC power, one or more sensors for sensing and logging data, and a microcontroller coupled to the energy harvesting and storage units, the one or more sensors and the radio, the microcontroller operable to wake up from a sleep state and cause the radio to communicate, sensed data from at least one of the one or more sensors while powered by energy previously harvested and stored by the energy harvesting and storage unit. | 10-10-2013 |
20140085051 | LOW POWER RADIO FREQUENCY COMMUNICATION - A method, system and tag for low power radio frequency communication is described. In one embodiment, the RF tag comprises: an access point comprising: a first antenna; a first radio coupled to the first antenna; a central processing unit coupled to the first radio; a backscatter adapter coupled to the access point via a wired communication interface, the backscatter adapter comprising a backscatter radio and a second antenna coupled to the backscatter radio for use in communicating with an RF tag in the network via backscatter. | 03-27-2014 |
20150256097 | SYSTEM FOR AMBIENT ENERGY HARVESTING - A method and apparatus is disclosed herein for harvesting ambient energy. In one embodiment, an energy harvester comprises: a first RF rectifier to output a first voltage determined by rectified RF energy in response to received RF energy; a first energy reservoir coupled to the first RF rectifier to store energy at the first voltage; a DC/DC converter coupled to the first energy reservoir to convert the first voltage to a second voltage; a second reservoir coupled to the DC/DC converter to store energy at the second voltage, the second voltage being greater than the first voltage; and a third reservoir coupled to the second reservoir to receive energy transferred from the second reservoir periodically. | 09-10-2015 |
20150256960 | ASYMMETRIC WIRELESS SYSTEM - A method and apparatus is disclosed herein for sensor node and access point communication. In one embodiment, the method comprises embedding, by a sensor node, data from one or more sensor readings in a field of a first message, the field being designated as part of a standardized protocol to send information other than the data sensor readings; determining without the use of a receiver, by the sensor node, whether a wireless communication channel is at a predetermined quality level to send the first message; and broadcasting the first message wirelessly to a component according to the standardized protocol. | 09-10-2015 |