Class / Patent application number | Description | Number of patent applications / Date published |
340100340 | Power up | 38 |
20090051499 | RFID System, Reader, Control, Program and Transmission Method | 02-26-2009 |
20090096587 | Transponder Actuatable Switching Device - The present invention relates to a switching device for generating a switch signal, a reading device with the switching device and a method for the communication between a reading device and a transponder (T). The switching device includes an antenna ( | 04-16-2009 |
20090207000 | Multiple Antenna Energy Harvesting - Energy harvesting circuits and associated methods are provided that employ multiple antennas to optimize the amount of energy that is harvested while at the same time making efficient use of tag space. In some embodiments, matching networks are chosen in a manner that optimizes the DC energy that is created from the harvesting process. In other embodiments, phase shifts are introduced into the received signals to allow the signals to be more efficiently combined after they are rectified. | 08-20-2009 |
20090237220 | RFID TAGS WITH POWER RECTIFIERS THAT HAVE BIAS - A system and method for generating a rectified signal in a RFID tag. An alternating signal is received by the RFID tag, and a first phase of the alternating signal is coupled to a gate and to a first non-controlling terminal of a first switching transistor. The non-controlling terminal of the first switching transistor is one of a source and a drain of the first switching transistor. A first bias voltage is applied between the first non-controlling terminal and the gate of the first switching transistor and a rectified voltage is received between the first non-controlling terminal and a second non-controlling terminal of the first switching transistor. | 09-24-2009 |
20090278666 | POWER RECEPTION DEVICE, ELECTRONIC APPARATUS, AND NON-CONTACT POWER TRANSMISSION SYSTEM - A power reception device includes a first resistance element having one end electrically connected to one end of a secondary coil which is able to be electromagnetically coupled to a primary coil of a power transmission devices a second resistance element having one end electrically connected to the other end of the first resistance element and having the other end supplied with a reference voltage, a power reception control device that obtains a frequency of an alternating current (AC) voltage induced on the secondary coil based on a voltage division signal output from the other end of the first resistance element and varies a magnitude of a load of the power reception device in accordance with the frequency, and a variable resistance element that has resistance varied in accordance with temperature and is connected to the first resistance element or the second resistance element in parallel. | 11-12-2009 |
20090295547 | RFID tag communication apparatus - This disclosure discloses an RFID tag communication apparatus comprising: a housing including a bottom surface; an antenna provided at a distance h from the bottom surface; and a radio frequency circuit including a carrier wave transmitting device that generates a carrier wave of a frequency fc; wherein the correlation as fo12-03-2009 | |
20100001847 | NONCONTACT TRANSMISSION DEVICE - A noncontact transmission device | 01-07-2010 |
20100127837 | PASSIVE WIRELESS SYSTEM - A passive wireless system for monitoring a protected area. The passive wireless system comprises at least one passive sensor for sensing an event, a reader for receiving signals from the at least one passive sensor, a plurality of exciters disposed within the protected area for transmitting a radio frequency pulse at a variable time interval to the at least one passive sensor, and a controller for controlling each of the plurality of exciters to transmit the radio frequency pulse at the variable time interval. The radio frequency pulse powers the passive sensors. | 05-27-2010 |
20100134259 | CONTACTLESSLY RECHARGEABLE IDENTIFICATION DEVICE AND METHOD THEREOF - A non-contact state charging authentication device and a method thereof are disclosed. The authentication device includes: a power supply for receiving and transmitting power; a control unit for controlling a signal; a shunt and voltage divided circuit connecting to the said power supply and the said control unit for controlling the transmission of power; and an electromagnetic inductance element connecting to the said shunt current and voltage divided circuit for inducting and transmitting an electromagnetic signal which has an electromagnetic inductance frequency. While non-contact electromagnetic induction between the said authentication device and a charging device occurs, the said charging device begins to charging the said authentication device. | 06-03-2010 |
20100148939 | ELECTRIC POWER TRANSMITTING AND RECEIVING DEVICE, ELECTRIC POWER TRANSMITTING DEVICE AND ELECTRIC POWER RECEIVING DEVICE - In wireless electric power transmission and reception, the efficiency of transmission and reception is improved and a device to which electric power can be supplied is specified to improve security. | 06-17-2010 |
20100156610 | RFID REPEATER FOR RANGE EXTENSION IN MODULATED BACKSCATTER SYSTEMS - A backscatter tag system including a tag having tag circuitry and a reader for transmitting a command signal to the tag includes an energizer node for transmitting an energy signal to the tag to energize the tag and provide energy for operating the tag circuitry and for emitting a backscatter signal by the tag. The energizer node includes an energizer receiver for receiving the command signal from the reader to provide a received command signal and an energizer transmitter for transmitting the received command signal from the reader to the tag. The energizer node transmits both the energy signal and the received command signal to the tag. The energizer transmitter can transmit a sinusoidal signal, a frequency hopping signal, a spread spectrum signal, or a frequency shifted signal to the tag. The backscatter tag circuitry can include a processor. | 06-24-2010 |
20100176934 | RADIO FREQUENCY CHARGING SYSTEM - A radio frequency (RF) charging system is capable of charging an RF device on a display panel to increase charging efficiency. The RF device generates a response signal upon receiving an RF signal. The RF charging system includes an antenna set having a plurality of antennas, a switch unit, an RF module and a microcontroller unit (MCU). The MCU controls the switch unit to select one antenna from the antenna set. The antenna is able to receive the response signal and is used for transmitting the RF signal, thereby charging the RF device. | 07-15-2010 |
20100214079 | METHOD FOR SWITCHING AN RFID TAG FROM DEEP SLEEP TO ACTIVE MODE - A method by which an active tag can be switched from a deep sleep mode to an operating mode is based on a detector embedded on an active tag providing a wake up pulse to a state-machine of the tag in response to external energy pulse that will open an radio frequency listen window in which a reader can send any usual command, among them a wake-up command or a configuration command. | 08-26-2010 |
20100277286 | Synchronization of devices in a RFID communications environment - An adaptive wakeup methodology may be implemented to allow an radio frequency identification (RFID) tag to stay synchronized with periodic radio frequency (RF) interrogator polling signal while at the same time optimizing power consumption. A receiver (or transceiver) component of a RFID tag may only be operated when an interrogator polling signal is expected, and in a manner that reduces the amount of time between when the receiver or transceiver is turned on and when the interrogator polling signal is received (i.e., the receive buffer time). At other times, the RFID tag may be placed in a low power consumption sleep state. The amount of time that the RFID tag spends in such a low power sleep state before waking and receiving the following interrogator polling signal may also be optionally adjusted, e.g., to fit characteristics of a given situation and/or to re-synchronize a given aRFID tag with first band transmissions from an aRFIDI. | 11-04-2010 |
20110063089 | RADIO FREQUENCY IDENTIFICATION (RFID) SYSTEM - A radio frequency identification (RFID) system is disclosed. The RFID system connects a sense-signal generator to a power-supply voltage VDD input terminal of an RFID chip so that it detects a power-supply operation status of the RFID chip using sensory organs of a human being. The RFID system includes an RFID chip configured to perform a data read/write operation upon receiving a radio frequency (RF) signal from an antenna, and a sense-signal generator configured to output an operation status of the RFID chip by connecting to the RFID chip. | 03-17-2011 |
20110084816 | APPARATUS AND METHOD FOR REDUCING THE CURRENT CONSUMPTION OF A CONTROL CIRCUIT - Through a microcontroller, control signals are transferred to a transmitting and receiving unit or configuration data are transferred. Through the transmitting and receiving unit, in a first operating state transmission signals are issued, while controlling the control signals of the microcontroller. Upon a first specified event, the transmitting and receiving unit is switched to a second operating state through a one-time transfer of corresponding configuration data by the microcontroller. In the second operating state, the transmitting and receiving unit automatically transmits repeated transmission signals. The microcontroller immediately switches to a current-saving or non-current, inactive operating state after said microcontroller has switched the transmitting and receiving unit to the second operating state. As a reaction to a second specific event, the transmitting and receiving unit switches to the first operating state and produces a state change signal for the microcontroller, which switches to the active operating state as a reaction thereto. | 04-14-2011 |
20110148600 | APPARATUS AND METHODS FOR SELF-POWERED WIRE FREE DATA NETWORKS - A self-powered wire free data network method (D) that includes at least one self-powered wire free transmission apparatus (A), self-powered wire free receiver apparatus (B) or self-powered wire free transceiver apparatus (C) makes capable the wire free transmission and reception of environmental conditions whereby the processing of said data makes capable the control of various processes. A self-powered wire data network (E) that includes at least one self-powered wire free transmission apparatus (A), self-powered wire free receiver apparatus (B) and at least one self-powered wire free transceiver apparatus (C) makes capable the wire free transmission and reception of environmental conditions over extended distances whereby the processing of said data makes capable the control of various processes. | 06-23-2011 |
20110148601 | RADIO FREQUENCY IDENTIFICATION (RFID) DEVICE - A radio frequency identification (RFID) device is disclosed. The RFID device is configured to read/write data in response to a radio frequency (RF) signal received from an antenna unit. The RFID device includes an event controller, a connection unit, and a driving controller. The event controller outputs a control signal for executing a specific event, if a command signal generated by the RF signal corresponds to predetermined specific event data. The connection unit is connected to an external driving device of the RFID device. The driving controller outputs a driving signal controlling an operation of the driving device to the connection unit in response to the control signal. | 06-23-2011 |
20110248834 | METHOD AND SYSTEM FOR LOW COST, POWER EFFICIENT, WIRELESS TRANSPONDER DEVICES WITH ENHANCED FUNCTIONALITY - This invention provides a method and system for inventorying wireless transponders, specifically referred to as RFID transceiver devices. The RFID transceiver devices are certifiable by a recognized standards body, such as EPCglobal, or are compatible with recognized standards but have higher functionality than typical passive RFIDs, and yet are implemented with techniques that lower cost and battery requirements. Backscatter techniques of standard passive RFIDs are used to keep cost and battery requirements low. To provide higher functionality, a microcontroller is used in the RFID, along with a battery, but the clock frequency of the microcontroller is adjusted, based on external input, to minimize battery requirements. In one embodiment, the microcontroller initially has a zero or near zero clock frequency. A comparator compares the received RF energy to a threshold, and when the threshold is exceeded, indicating the presence of a probe signal from an RFID reader, the microcontroller clock frequency is immediately increased, and further adjusted based on the received data. In an alternate embodiment, the clock frequency of the microcontroller is adjusted based on data from sensors, to keep the clock speed at the proper speed to adequately process the data while minimizing the power requirement of the microcontroller, and then create an input to modulate the backscattered signal to be transmitted by the RFID. The received data can also cause the microcontroller to request the sensors to generate sensing data at a faster rate, which in turn requires the microcontroller clock to increase to handle the increased sensor data. In an additional embodiment, multiple sensors are multiplexed to provide a single input stream to the microcontroller, reducing the microcontroller clock speed required, along with the overall cost of the microcontroller and sensors. | 10-13-2011 |
20110279244 | METHOD AND APPARATUS FOR TRANSMITTING POWER AND DATA - Provided is an apparatus and a method for transmitting power to electronic devices and of transmitting and receiving data. The method of transmitting power includes searching for a device to be charged located in an area, determining whether the found device needs charging, and transmitting power to the found device when the found device is determined to need charging. The apparatus may be mobile, and may travel towards or away from one or more devices based on whether the one or more devices need charging. | 11-17-2011 |
20120081213 | ACTIVE ELECTRONIC MEDIA DEVICE PACKAGING - Active packaging for supplying power, data, or both power and data to an electronic media device while the device is housed within the active packaging is provided. The active packaging may include one or more electrical traces in-molded or printed onto the packaging that couple to a suitable connector on the device. Power may also be provided via one or more wireless power techniques. Multiple active packages may be conductively stacked to transmit power, data, or both power and data to a row or stack or devices. POM sensors integrated with or attached to the device (or the active packaging itself) may detect various movement events. Coordinated and synchronized display effects may be presented while the devices are housed within the active packaging. | 04-05-2012 |
20120126955 | ACTIVE ENERGY HARVESTING FOR RADIO-FREQUENCY IDENTIFCATION DEVICES - In general, embodiments of the present invention provide approaches for providing power to RFID transponders. In one embodiment, the RFID transponder is powered using a magnetic field generated by power lines. In another embodiment, the RFID transponder is powered using a field generated by a wireless network. In the case of the latter, the RFID transponder acts as a member of the wireless network. In so doing, the RFID transponder is granted user rights and controls, and can control devices that are available on the network | 05-24-2012 |
20140197930 | Field Device for Automation Technology - A field device for automation technology, which has a metal housing for accommodating a field device electronics. On the field device at least one opening is provided, which is closable via a lid composed at least partially of a non-metallic material, wherein an RFID chip and an RF antenna are arranged in the housing in such a manner that communication and energy exchange with an RFID reading device arranged outside of the field device can transpire, and wherein the reading device is so embodied that it provides sufficient energy to the RFID chip when the energy supply to the field device is interrupted, in order to read out via the RFID antenna the data stored on the RFID chip. | 07-17-2014 |
20140292494 | RFID Systems Using Distributed Exciter Network - RFID systems are disclosed that include at least one RFID receiver system and a distributed exciter architecture. Exciters can be connected via wired and/or wireless connections to the RFID receiver system, which can control activation of the exciters to detect the presence of RFID tags within interrogation spaces defined by the exciter topology. One embodiment includes an RFID receiver system configured to detect information from RFID tags within a receive coverage area, and a plurality of exciters defining a plurality of interrogation spaces within the receive coverage area of the receiver system. The receiver system is configured to transmit a control signal that identifies one of the exciters and includes information indicative of an RFID tag interrogation signal, the exciters are configured to receive the control signal, and the exciter identified in the control signal is configured to illuminate an interrogation space with the RFID tag interrogation signal. | 10-02-2014 |
20140292495 | PROVIDING ENERGY TO A PASSIVE WIRELESS TAG - A system and method for communicating with a passive wireless tag. In one embodiment, a device for powering a passive wireless tag includes a power source, a first antenna, and a controller. The controller is configured to detect a wireless signal transmission directed to the passive wireless tag. The controller is further configured to transmit power extracted from the power source, via the first antenna, to the passive wireless tag, responsive to detection of the wireless signal transmission. The transmitted power is to be used to power the passive wireless tag. | 10-02-2014 |
20140320271 | Apparatus and Method Pertaining to Switching RFID Transceiver Read States - An apparatus (such as but not limited to an RFID tag) includes an RFID transceiver that is configured to automatically switch from a readable state to a quiescent read state upon being read and to remain in the quiescent read state at least while provisioned with reader-based power. The apparatus further includes a read-state changer disposed locally with respect to the RFID transceiver and configured to switch the RFID transceiver from the quiescent read state to the readable state notwithstanding current availability of the reader-based power. | 10-30-2014 |
20140375433 | ELECTRONIC APPARATUS AND CONTROL METHOD THEREOF - A control method of an electronic apparatus is provided. The electronic apparatus includes a processing unit, a memory unit and a near field communication (NFC) device. The control method includes following steps. A mode command is set. When the electronic apparatus enters a system shut down state, the mode command is read. It is determined whether to let the NFC device entering a card emulation mode according to the mode command. A Control right of the memory unit is handed over to the NFC device from the processing unit when the NFC device enters the card emulation mode. Information of the electronic apparatus stored in the memory unit is accessed in response to a control signal when the control signal is received by the NFC device. The electronic apparatus using the same is also provided. | 12-25-2014 |
20150022327 | Externally triggered memory type liquid crystal thin film - An externally triggered memory type liquid crystal thin film is provided with a wireless communication module including first and second driver units wherein a current is generated in the second driver unit when a distance between the first driver unit and the second driver unit is equal to or less than a predetermined value; and a light adjustment module including a first conduction layer electrically connected to a first terminal of the second driver unit so that the second driver unit supplies the current to the first conduction layer, a second conduction layer electrically connected to a second terminal of the second driver unit, and a liquid crystal layer formed between the first and second conduction layers so that an electric field is generated in the liquid crystal layer by both the first and second conduction layers. | 01-22-2015 |
20150091706 | REAL-TIME WIRELESS POWER TRANSFER CONTROL FOR PASSIVE BACKSCATTERING DEVICES - A method and apparatus is disclosed herein for real-time wireless power transfer control. In one embodiment, a system comprises: an RF-energy harvesting sensor tag operable to generate a first backscatter signal and at least one base station operable to deliver RF power to the sensor tag by emitting a first waveform comprising a plurality of subcarriers, wherein the first backscatter signal is generated by the sensor tag by modulated scattering of the first waveform as incident upon the sensor tag, and further wherein the at least one base station subsequently emits a second waveform determined at least in part by a closed-loop feedback control algorithm responsive to measurements of the first backscatter signal. | 04-02-2015 |
20150123771 | APPARATUS AND METHOD FOR ENERGIZING A TRANSCEIVER TAG - A wireless location system for energizing and/or determining location information indicative of a location of at least one transceiver tag ( | 05-07-2015 |
20160048710 | LONG-RANGE UWB REMOTE POWERING CAPABILITY AT FCC REGULATED LIMIT USING MULTIPLE ANTENNAS - A method and apparatus for remote UWB powering of passive RFID tags, sensors, and other electronic devices at long ranges and still at FCC low emission power limits utilizes a distributed multi-transmitter system configured for spotforming. The UWB powering signal is different from the signal that is used for communication between the tag and its reader. By de-coupling the powering task from the communication task, one is able to increase the range of communication between the tag and the reader, as readers can be designed to have excellent receiver sensitivities, while powering range is increased by use of multiple “spot-forming” antennas over a large area. | 02-18-2016 |
20160048711 | WIRELESS TAG, WIRELESS COMMUNICATION CIRCUIT, AND DEGRADATION DETECTION METHOD - A wireless communication circuit performs a wireless communication with a transmitter-receiver via an antenna. Power to the wireless communication circuit is turned on by electromagnetic waves transmitted from the transmitter-receiver. In the wireless communication circuit, a circuit includes a capacitor for storing electric charge at the time of the power being on, and is configured to pass discharging current based on the electric charge stored in the capacitor along a current path including the antenna at the time of the power being off, a monitoring circuit is configured to be operated by electric power based on the electric charge at the time of the power being off and to determine the presence or absence of degradation on the basis of potential of a node on the current path, and a storage circuit is configured to store the result of a determination by the monitoring circuit. | 02-18-2016 |
20160063286 | PASSIVE RFID SENSOR TAG - An integrated passive radio frequency identification transponder chip includes a backscatter modulator for communication with a backscattering principle, a tag oscillator generating a backscattering modulation frequency, and a reference load, preferably a reference resonator. Either the reference load or at least one pair of an internal or external resonator and an external sensor element can be selectively connected to load the tag oscillator. Each external sensing element is arranged to sense a predetermined variable. The tag oscillator is capable of generating any one of nominal backscattering modulation frequencies defined for a respective RFID system, when the reference load is connected to load the tag oscillator. The tag oscillator is arranged to generate a predetermined one of nominal backscattering modulation frequencies, when the at least one pair of the internal or external resonator and the external sensor element is connected to load the tag oscillator. | 03-03-2016 |
20160171259 | COMMUNICATION APPARATUS AND METHOD FOR CONTROLLING THE SAME | 06-16-2016 |
20160188919 | METHOD AND APPARATUS FOR ENERGY HARVEST FROM A PROXIMITY COUPLING DEVICE - The disclosure generally relates to a method and apparatus for energy harvest from a proximity coupling device (PCD) by a proximity integrated circuit card. In one embodiment, the PICC includes an integrated BLE. The BLE may be exclusively charged by the external magnetic field received from the PCD. The PCD may be configured to detect when the PICC is nearby and increase its duty cycle to thereby increase the magnetic field imposed on the PICC. The PICC may include circuitry to receive and convert the magnetic field to electric potential or voltage. The voltage may be store at a capacitor for BLE's usage. | 06-30-2016 |
20160188920 | SMART ENERGY SCAVENGING TAG SENSOR - A smart tag reading system is provided that has the ability to query sensor tags that have energy harvesting capability. In one embodiment, an adaptive reader system learns the state of each tag and how long the tag takes to charge. Tags that charge relatively quickly can be accessed more frequently. Others that do not charge as quickly, readings can be performed at much longer intervals allowing the tag a longer time to gather enough energy to complete the transaction. The reader query system can then adapt to the environment and state of the individual tags. | 06-30-2016 |
20160188925 | METHOD FOR CONTROLLING NFC TAG AND CONTROLLED NFC TAG - A method for controlling NFC tag and a controlled NFC tag, said method comprising: producing an on or off control signal causing an electronic switch to close or to open, the off or on control signal being exerted upon the electronic switch in parallel connection with the NFC antenna coil; by means of an enabling signal or a disabling signal emitted by the electronic switch, enabling or disabling transfer of electromagnetic energy coupled with the NFC antenna coil to the NFC tag chip. The controlled NFC tag comprises: an NFC tag body, an electronic switch in parallel connection with the NFC antenna coil, and an electronic switch control circuit producing on or off control signals for the electronic switch. The present invention allows information inside the NFC chip to be accessed according to certain conditions, thus avoiding unnecessary operations while enhancing the security of information stored in the NFC chip. | 06-30-2016 |
20160203348 | PASSIVE RFID TAG COIL ALIGNMENT AND COMMUNICATION | 07-14-2016 |