| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 340100330 | Wake up (all call) | 32 |
| 20080211636 | Radio frequency data communications device - A radio frequency identification device includes an integrated circuit including a receiver, a transmitter, and a microprocessor. The receiver and transmitter together define an active transponder. The integrated circuit is preferably a monolithic single die integrated circuit including the receiver, the transmitter, and the microprocessor. Because the device includes an active transponder, instead of a transponder which relies on magnetic coupling for power, the device has a much greater range. | 09-04-2008 |
| 20080297324 | METHODS AND SYSTEMS OF RECEIVING DATA PAYLOAD OF RFID TAGS - Methods and systems of receiving data payload of RFID tags. At least some of the illustrative embodiments are methods comprising selecting (by each of a plurality of radio frequency identification (RFID) tags) a time window within which to transmit (the selecting to create respective time windows), sending a start signal from a RFID reader to the plurality of RFID tags (the start signal indicative of the start of a first time window), and transmitting a signal by each of the plurality of RFID tags in the respective time windows. | 12-04-2008 |
| 20090027171 | METHOD AND DEVICE FOR THE POWER-SAVING OPERATION OF A PLURALITY OF RFID DATA CARRIERS - A method and a device for power-saving operation of a plurality of RFID data carriers, whereby the RFID data carrier has a transmission and reception antenna, by way of which data are sent to and received from a read/write unit, by means of a radio signal, and the data carrier is configured for reception of an energy-saving signal that puts the data carrier into a so-called sleep mode. The read/write unit sends a so-called conditional sleep command to all the RFID data carriers, and the RFID data carriers receiving these data in the transmission field compare the transmitted condition with a status/data detected in the RFID data carrier, whereby the condition detected in the RFID data carrier depends on a sensor input that is connected with the RFID data carrier. The transmission of the signals between the read/write unit and the data carrier is formed by means of a transmission/reception antenna disposed on the read/write device, and a correspondingly disposed transmission and reception antenna disposed on the data carrier. | 01-29-2009 |
| 20090027172 | METHOD AND DEVICE FOR THE POWER-SAVING OPERATION OF RFID DATA CARRIERS - A method and a device for power-saving operation of RFID data carriers, whereby the RFID data carrier has a transmission and reception antenna, by way of which data are sent to or received from a transmission/read unit, by means of a radio signal, within a transmission field, whereby the data carrier is configured for a power-saving sleep mode, and switches over to the reception mode by means of a wake-up signal. With the transmission of the wake-up signal, at the same time, a time datum is transmitted to the data carrier, whereby the time datum shows the time that indicates how much time must still elapse until transmission of a command. The data carrier configured with the sleep mode switches over to a reception mode by means of a wake-up signal, whereby the wake-up signal additionally has a time datum that forms a countdown time, and switches the data carrier into the reception mode briefly, after this time has elapsed, thereby causing the data carrier to receive a command. | 01-29-2009 |
| 20090079548 | Microwave control system - A microwave control system is applied to control a working system to execute at least one predetermined assignment, and comprises a microwave control unit, a control card and a passive control unit. A microwave illuminator of the microwave control unit is applied to send a microwave signal. After receiving the microwave signal, the control card reflects a reflection signal to the microwave control unit, wakes up from a first sleep mode to enter a first awake mode, and sends a first control signal to the passive control unit. After the microwave control unit receives the reflection signal, the passive control unit wake up from a second sleep mode to enter a second awake mode, and the passive control unit transmits a second control signal in accordance with the first control signal to the working system, so as to control the working system to execute the predetermined assignment. | 03-26-2009 |
| 20090096586 | Radiofrequency Tracking and Communication Device and Method for Operating the Same - A radio is defined in electrical communication with a processor on an integrated circuit chip. The radio is defined to operate at an international frequency, and is defined to be powered on and off in accordance with a control signal to be transmitted by the processor. A location determination device is defined to electrically communicate with the processor. The location determination device is also defined to be powered on and off in accordance with a control signal to be transmitted by the processor. A power source is defined to supply power to the processor, the radio, and the location determination device. The processor, radio, location determination device, and power source are integrated together in a portable device that can be affixed to a moveable asset. A power management program is implemented to enable long-term deployment of the portable device without replacement of the power source. | 04-16-2009 |
| 20090295546 | METHOD AND APPARATUS FOR PERFORMING WIRELESS SENSOR NETWORK COMMUNICATING SELECTIVELY USING INFRARED AND RADIO FREQUENCY COMMUNICATION - A wireless sensor network communication apparatus and method selectively using infrared and radio frequency communication. The wireless sensor network communication apparatus includes a first communicating unit, a second communication unit, and a wireless node processor. The first communicating unit wakens a neighboring node in a sleep mode and transmits/receives the woken node and sensor data. The second communicating unit transmits/receives the woken neighboring node and the sensor data. The wireless node processor is wakened from the sleep mode, wakens the neighboring node in the sleep mode, and transmits the sensor data with a minimum low power through one of the first and second communicating unit. Accordingly, the apparatus can perform the wireless sensor network communication with lower power compared to the case that communication is performed only by the radio frequency communication function. | 12-03-2009 |
| 20100134258 | Method and System of Utilizing RFID Tags for Jointly Processing Task - A method of utilizing RFID tags for jointly processing a task and an associated system are provided. The method includes causing a plurality of RFID tags to enter a ready state, causing the RFID tags to enter an accessible state in turn, transmitting the task to the RFID tags, utilizing the RFID tags to jointly process the task, and reading a result from the RFID tags having processed the task. | 06-03-2010 |
| 20100141399 | METHOD OF SENSOR CLUSTER PROCESSING FOR A COMMUNICATION DEVICE - A sensor enhanced communication device ( | 06-10-2010 |
| 20100141400 | LOWER POWER DISCOVERY AND WAKE UP USING SERVICE SET IDENTIFIER PROBABILISTIC SCANNING SYNCHRONIZATION VERIFICATION AND OPTIONAL SENSOR - Processes to achieve low power discovery and wake-up in the presence of desired 802.11 coverage are disclosed. In one aspect, probabilistic scanning for 802.11 SSID triggers is provided. In another aspect, the 802.11 Access Point (AP) is equipped with a Bluetooth inquiring device, which initiates the wake-up process with a special inquiry access code (IAC). The special IAC can comprise the AP's 802.11 channel. Additional optional sensors (GPS, Gyroscope, odometer, etc) are provided such that probabilistic scanning reduces power consumption and improves the likelihood that an 802.11 channel scan will find a desired SSID. A Bluetooth inquiry allows a discovery process to either wake-up immediately, or ascertain the need for host wake-up by exchanging further information with the AP. Probabilistic scanning allows the use of sensors and historical or pre-loaded information to improve the probability that 802.11 scanning is not required on individual channels, further driving down power needs. | 06-10-2010 |
| 20100141401 | LPRF DEVICE WAKE UP USING WIRELESS TAG - A wireless transceiver includes: (a) a low power radio frequency (LPRF) communications component capable of powering down to conserve energy and capable of powering up in response to an electronic signal, the LPRF communications component including a transmitter and a first receiver; and (b) a second receiver that is configured to screen a radio frequency broadcast and provide, on the basis of specific data identified therein, the electronic signal to the LPRF communications component in order to power up the LPRF communications component. The second receiver is adapted to draw less current than the LPRF communications component while awaiting receipt of and listening for a radio frequency broadcast. | 06-10-2010 |
| 20100207740 | Long Range Radio Frequency Identification System - A method, apparatus and system for radio frequency identification provides an on-off keyed amplitude-modulated illumination signal containing a sequence of bits configured to illuminate a radio frequency identification (RFID) tag, The illumination signal is received at the RFID tag, rectified to generate a wake signal for waking a processor which is subsequently powered by a battery. The received illumination signal is sampled and subjected to a thresholding process. Mobile telephone band interference is countered by correlating the sampled illumination signal to determine its bit sequence and then correlating the bit sequence against a predetermined key. An identification signal from the RFID tag is sent in response to a match. | 08-19-2010 |
| 20110037572 | METHOD FOR THE OPERATION OF A TRANSPONDER FOR RADIO FREQUENCY IDENTIFICATION (RFID) AND RFID TRANSPONDER - The invention relates to a method for the operation of an RFID transponder, which is characterized by the fact that the RFID transponder is operated either in broadcast mode or in bidirectional response mode or simultaneously in both aforementioned modes. The RFID transporter is equipped with a wireless transmitter as well as with a wireless transmission/reception unit for operation in these two modes, said wireless transmitter and wireless transmission/reception unit being operable independently from one another. | 02-17-2011 |
| 20110080269 | TRANSCEIVER - A transceiver comprising a transmit pin configured to receive a signal from a microcontroller, a receive pin configured to transmit a signal to a microcontroller and a bus pin configured to transmit and receive signalling to/from a network. | 04-07-2011 |
| 20110084815 | DEVICE AND METHOD FOR ACTIVATING A COMMUNICATION UNIT - A communication system with a plurality of devices with a communication unit (CU | 04-14-2011 |
| 20110090063 | APPARATUS AND METHOD USING HISTOGRAM-BASED TECHNIQUES FOR AVOIDING OVERPOLLING - A device including an RF transceiver coupled to receive signals from an antenna; and a micro-controller coupled to the RF transceiver periodically scanning for a wakeup signal and measuring a signal strength is provided. The micro-controller may use the signal strength to update a count value in a bin of a histogram. The micro-controller may also decrement histogram values periodically, and direct the RF transceiver to respond to the wakeup signal if the count value in the histogram is lower than a threshold value. Further according to some embodiments disclosed herein a system for avoiding over polling in wireless communications may include a tag and a reader. The reader may transmit a wakeup signal periodically and the tag may operate as the device disclosed above. Also, a method for using a device and a system as above is provided. | 04-21-2011 |
| 20110102157 | Wake-Up For Wireless Devices Based On Requested Data - Various example embodiments are disclosed herein. According to an example embodiment, a method may include generating, by a first wireless communication system, a first label based on performing one or more hash functions on at least information relating to data to be requested; storing the first label in a set of one or more active labels; transmitting a data request to request the data; transitioning at least a portion of the first wireless communication system from an operational state to a low power state; receiving a message including a second label; comparing the second label to the set of one or more active labels, each of the active labels associated with an outstanding data request; determining that the second label matches one of the one or more active labels based on the comparing; and waking up at least the portion of the first wireless data communication system from the low power state back to the operational state in response to the determining. | 05-05-2011 |
| 20110128129 | ASSET TRACKING SYSTEM INCLUDING A TAG CONTROLLER - A tag includes a processor, a radio frequency transmitter coupled to the processor, and a capacitively driven communication circuitry coupled to the processor. The processor is to energize the capacitively driven communication circuitry to receive a serial set of binary bits via the capacitively driven communication circuitry. | 06-02-2011 |
| 20110181399 | ENERGY HARVESTING WITH RFID TAGS - RFID tags, such as those in boluses for ruminant animals, comprise RFID tags may be provided with energy harvesting (EH) capability so that they may collect energy from the environment, either deliberately radiated (such as RF) or gathered from existing sources (i.e., motion, heat, etc.). The energy collected by the RFID tag allows for independent (stand-alone) operation of the tag, such as for logging of temperature in one hour intervals, then transmitting the temperature readings (and ID) periodically (such as six times per day) to a reader (or equivalent, such as an active receiver) using an active RF transmitter (radio) or passive RFID techniques. | 07-28-2011 |
| 20110248833 | RFID SYSTEM - An RFID system comprising: an RFID tag, an exciter, and an RFID reader. The RFID tag is an active RFID tag operating at an UHF band and being connected to an energy source for energizing the RFID tag, the RFID tag further comprising at least one tag antenna for wireless communication at an UHF band with the RFID reader, wherein the RFID tag is configured to have a semi-passive state and a ready state, the semi-passive state being arranged to change into the ready state by an UHF (Ultra High Frequency) wake-up signal received by the tag antenna, and said RFID reader comprising at least one antenna for wireless communication with the tag antenna, the exciter being arranged to generate and send the UHF wake up signal for changing the RFID tag from the semi-passive state to the ready state, and the RFID reader sending and/or receiving data with the RFID tag in the ready state. | 10-13-2011 |
| 20110298591 | Methods and Apparatus for Switching A Transponder To an Active State, and Asset Management Systems Employing Same - A transponder that may be used as an RFID tag includes a passive circuit to eliminate the need for an “always on” active RF receiving element to anticipate a wake-up signal for the balance of the transponder electronics. This solution allows the entire active transponder to have all circuit elements in a sleep (standby) state, thus drastically extending battery life or other charge storage device life. Also, a wake-up solution that reduces total energy consumption of an active transponder system by allowing all non-addressed transponders to remain in a sleep (standby) state, thereby reducing total system or collection energy. Also, the transponder and wake-up solution are employed in an asset tracking system. | 12-08-2011 |
| 20110304442 | RECOGNIZING TIRE SENSOR LOCATION IN FACTORY MODE FOR TPMS AND SMART ENTRY SYSTEM - A method for localizing tire sensors includes determining a wake up field power, transmitting an LF wake up field having the wake up field power from an LF antenna on the vehicle, receiving an identification signal from each tire sensor awakened by the transmitted LF wake up field, and determining whether a desired number of tire sensors have woken up in response to the transmitted LF wake up field based on the received identification signals. When the desired number of tire sensors have woken up, the method can further include recording the identification signals received from the awakened tire sensors and the respective antennas that awoke the respective tire sensors. The method further includes determining whether a desired number of antennas have transmitted a respective LF wake up field. When the desired number of antennas have transmitted a respective LF wake up field, the method can further include comparing the received identification signals and determining locations for the tire sensors based on which respective antenna woke up which respective tire sensor and whether the received identification signals match other received identification signals. | 12-15-2011 |
| 20110316676 | APPARATUS AND METHOD FOR MANAGING POWER-CONSTRAINED WIRELESS DEVICES - A method of interrogating a set of tags with an interrogator is provided. The method includes defining a duration of a wake-up superframe that matches that of a wake-up cycle of the tags; defining an integer number of time periods within the duration of the wake-up superframe such that each time that one of the set of tags wakes is within one of the time periods of the wake-up superframe, the tags waking within a particular time period defining a group of tags; providing a first wake-up signal in a first time period to wake a first group of the tags; and providing a second wake-up signal in a second time period wake a second group of the tags. | 12-29-2011 |
| 20120194322 | LONG RANGE RFID DEVICE AS MODEM AND SYSTEMS IMPLEMENTING SAME - A Radio Frequency Identification (RFID) system according to one embodiment of the present invention includes an RFID device having a memory; and an electronic device in electrical communication with the RFID device via a direct physical connection; wherein data received by the RFID device from a remote device is stored in the memory of the RFID device, the data being communicated to the electronic device via the direct physical connection. An RFID system according to another embodiment of the present invention includes an RFID device having a memory; and an electronic device in electrical communication with the RFID device via a direct physical connection; wherein data initiating with the electronic device is stored in the memory of the RFID device for subsequent transmission to a remote device. Methods are also provided. | 08-02-2012 |
| 20120218086 | MULTI-SAMPLE READING IN SLEEP MODE FOR PASSIVE INFRARED DETECTORS AND OTHER ANALOG INPUTS - This disclosure provides systems and methods for detecting a change in environmental conditions utilizing sampling circuitry configured to sample an environmental sensor while a processor remains in a low-power state or a sleep state. According to some embodiments, a pre-filter performs a simplified analysis of the sensor samples to determine if the processor should wake and perform additional analysis on stored sensor samples. Specific examples are provided for detecting motion using passive infrared detectors. Accordingly, systems and methods for reducing the power consumption of a motion detection system are provided herein. | 08-30-2012 |
| 20120223817 | Integrated Detection Point Passive RFID Tag Reader and Event Timing system and Method - A tag reader system, method and timing system for determining a time of detection of a passive RFID tag relative to a detection line located along a route traveled by the RFID tag. | 09-06-2012 |
| 20130009755 | RFID ANTENNA SYSTEM AND METHOD FOR CONTROLLING THE SAME - The present disclosure relates to an antenna system, and more particularly, to an RFID antenna system capable of improving a tag recognition rate of a shelf antenna system by generating energy of electromagnetic waves on a shelf, and a method for controlling the same. An antenna system according to an embodiment includes a first antenna configured to operate in response to a first control signal, a second antenna configured to operate in response to a second control signal and receive information from an RFID tag, and a reader unit configured to generate the first or second control signal and obtain the RFID tag information received through the second antenna. | 01-10-2013 |
| 20130271268 | CONTROL METHOD, CONTROLLED DEVICE, USER INTERACTION DEVICE AND COMPUTER PROGRAM PRODUCT - A method for controlling a controlled device is disclosed, wherein the controlled device has a host connection to an RFID tag, the method comprising the following steps: (s1) the controlled device writes operational parameters to the RFID tag through the host connection; (s2) a user interaction device reads the operational parameters from the RFID tag through an RFID connection; (s3) a user changes the operational parameters via a user interface comprised in the user interaction device; (s4) the user interaction device writes the operational parameters to the RFID tag through the RFID connection; (s5) the controlled device reads the operational parameters from the RFID tag through the host connection and adapts its behavior based on the operational parameters. Furthermore, a corresponding controlled device, a user interaction device and a computer program product are disclosed. | 10-17-2013 |
| 20140043146 | SYSTEM, METHODS AND APPARATUS FOR WAKING AN AUTONOMOUS ACTIVE IMPLANTABLE MEDICAL DEVICE COMMUNICATING BY PULSES TRANSMITTED THROUGH THE INTERSTITIAL TISSUES OF THE BODY - Systems, methods, and devices for activating an implantable medical device from a low-power sleep state are provided. One method includes receiving a wake-up signal at a receiver device from a transmitter device. The wake-up signal includes a series of pulses having a pulse pattern encoding a predetermined wake-up code. The wake-up signal is transmitted via intracorporeal communication of electrical pulses conducted by interstitial tissues of a patient's body. The method further includes extracting the wake-up code from the wake-up signal and determining whether the wake-up code corresponds to a stored wake-up value. The method further includes, in response to determining that the predetermined wake-up code corresponds to the stored wake-up value, switching at least one active circuit element of the receiver device from a lower-power sleep state into a higher-power operational state. | 02-13-2014 |
| 20140062671 | 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 energy harvesting unit operable to convert incident RF energy to direct current (DC); a storage unit operable to store recovered DC power; a passive wakeup pattern detector operable to generate an interrupt in response to detecting a set of one or more subcarriers; one or more sensors for sensing; a communication mechanism; and a microcontroller coupled to the energy harvesting and storage units, the one or more sensors, and the backscatter communicator, the microcontroller operable to wake up from a sleep state in response to the interrupt and cause the communication mechanism to exchange data wirelessly with another while powered by energy previously harvested and stored by the energy harvesting and storage unit. | 03-06-2014 |
| 20140062672 | 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 coupled to provide access to a network; an RF tag comprising an energy harvesting unit operable to convert incident RF energy to direct current (DC); a storage unit operable to store recovered DC power; a passive wakeup pattern detector operable to generate an interrupt in response to detecting a set of one or more subcarriers; one or more sensors for sensing; a communication mechanism; and a microcontroller coupled to the energy harvesting and storage units, the one or more sensors, and the backscatter communicator, the microcontroller operable to wake up from a sleep state in response to the interrupt and cause the communication mechanism to exchange data wirelessly with another while powered by energy previously harvested and stored by the energy harvesting and storage unit. | 03-06-2014 |
| 20150145651 | RFID TRANSPONDER AND METHOD FOR OPERATING THE SAME - An RFID transponder having an analog front end receiver having an attenuator coupled to receive an RF-signal from an antenna and to attenuate the RF-signal, an amplifier having a fixed amplifier gain and being coupled to receive and to amplify the attenuated RF-signal and a control unit coupled to control a gain of the attenuator, wherein the control unit is configured to control the attenuator gain in response to a level of the amplified RF-signal, the control unit is configured to have a plurality of predetermined states causing the attenuator to increase (step-up) or to decrease (step-down), its gain by a predefined step size, wherein the step size of a step-up is equal to or smaller than the step size of a step-down and wherein the control unit is further configured to switch, upon reaching or exceeding a predefined threshold value, from a first to a second state having a smaller step size and causing the attenuator to change the gain such that the slope of the RF signal inverts and to switch, upon reaching the predefined threshold again, to a third state causing the attenuator to change a prefix of the gain. | 05-28-2015 |
