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| Application No. | Application Title | Issue Date |
| 20080204138 | FULLY DIFFERENTIAL AMPLIFIER WITH CONTINUOUS-TIME OFFSET REDUCTION A fully differential amplifier circuit according to one embodiment includes a first section for generating first and second output signals on first and second outputs from first and second input signals; a first feedback loop coupled to the first section, the first feed... | 08/28/2008 |
| 20080157925 | LONG RANGE RFID DEVICE USED WITH DISPLAY, AND SYSTEMS AND METHODS IMPLEMENTING SAME A Radio Frequency Identification (RFID)-based display system according to one embodiment of the present invention includes an electronic display device having a visual display device; and an RFID device having a memory, the RFID device being in electrical communication ... | 07/03/2008 |
| 20080157924 | LONG RANGE RFID DEVICE FOR BATTERY MONITORING AND SYSTEMS IMPLEMENTING SAME An RFID system according to one embodiment includes an electronic device being powered by a battery; an RFID device in electrical communication with the electronic device; and a mechanism for estimating a remaining potential energy of the battery, wherein a flag is set ... | 07/03/2008 |
| 20080068174 | RFID SYSTEM WITH DISTRIBUTED TRANSMITTERS A Radio Frequency Identification (RFID) system according to one embodiment includes a reader having a receive antenna in communication therewith, and a plurality of transmitters in communication with the reader and spatially separated from the reader. Methods of use are... | 03/20/2008 |
| 20080062046 | MOUNTING STRUCTURE FOR MATCHING AN RF INTEGRATED CIRCUIT WITH AN ANTENNA AND RFID DEVICE IMPLEMENTING SAME A radio frequency device such as an RFID tag according to one embodiment includes an antenna, an integrated circuit, and a structure positioned between the antenna and the integrated circuit for electrically coupling the antenna to the integrated circuit, the structure ... | 03/13/2008 |
| 20080018466 | SELF-CHARGING RFID TAG WITH LONG LIFE A Radio Frequency Identification (RFID) device according to one embodiment of the present invention includes a rechargeable solid state battery, control circuitry coupled to the rechargeable solid state battery, and a power source for recharging the rechargeable solid s... | 01/24/2008 |
| 20080001744 | RFID DEVICE WITH FIRST CLOCK FOR DATA AQUISITION AND/OR CALIBRATION OF SECOND CLOCK A system according to one embodiment of the present invention includes a first clock signal generator generating a first clock signal at a first frequency, and a second clock signal generator generating a second clock signal at a second frequency that is higher than the... | 01/03/2008 |
| 20080001667 | Circuitry For Adaptively Generating And Using A Reference Voltage a circuit for an RFID device in one embodiment includes an operational amplifier having a first input, a second input, and an output where the first input receives an incoming signal, arid the second input is coupled to the output via a feedback loop. An operational amp... | 01/03/2008 |
| 20070290802 | SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT FOR CALIBRATING INTERROGATOR SIGNAL STRENGTH AND/OR TAG RESPONSE RANGE SETTING A system, method and computer program product according to one embodiment are provided for calibrating an RFID interrogator. A signal is sent from an interrogator to a calibration device. A backscatter signal is received from the calibration device. The backscatter from... | 12/20/2007 |
| 20070290791 | RFID-BASED SECURITY SYSTEMS AND METHODS RFID-based systems and methods are presented. A portable electronic device according to one embodiment of the present invention includes an electrical system, a controller coupled to the electrical system, a display screen coupled to the electrical system, input devices... | 12/20/2007 |
| 20070285256 | RFID SYSTEMS AND METHODS A Radio Frequency Identification (RFID) tag for use with a vehicle according to one embodiment includes a housing adapted for permanent or detachable coupling to the vehicle, control circuitry coupled to the housing, and a battery for providing power to the control circ... | 12/13/2007 |
| 20070285238 | RFID SENSOR TAG WITH MANUAL MODES AND FUNCTIONS A Radio Frequency Identification (RFID) tag according to one embodiment includes a controller, a sensor in communication with the controller, a local power source for providing power to the controller, and a user input device for receiving manual input from a user. A fu... | 12/13/2007 |
| 20070285237 | RF DEVICE COMPARING DAC OUTPUT TO INCOMING SIGNAL FOR SELECTIVELY PERFORMING AN ACTION A Radio Frequency (RF) device such as a Radio Frequency Identification (RFID) tag according to one embodiment includes a Digital to Analog Converter (DAC) for generating a reference signal based on a stored digital comparison criteria value, and a mechanism for comparin... | 12/13/2007 |
| 20070285236 | RF SYSTEMS AND METHODS FOR TRACKING AND SINGULATING TAGGED ITEMS A method for identifying an approximate location of a radio frequency tag includes scanning zones of an area in an active mode at a first power level for identifying the zone in which the tag is located, and scanning portions of the zone in which the tag is located in a... | 12/13/2007 |
| 20070285229 | RF SYSTEMS AND METHODS FOR PROVIDING VISUAL, TACTILE, AND ELECTRONIC INDICATORS OF AN ALARM CONDITION A Radio Frequency Identification (RFID) tag according to one embodiment includes a controller for setting one or more alarm states upon occurrence of one or more alarm conditions, and a visual display device under control of the controller, the visual display device pro... | 12/13/2007 |
| 20070141983 | Clock-free activation circuit A circuit for recovering data from an incoming data stream according to one embodiment includes a capacitor and a substantially constant current source for charging the capacitor. A subcircuit generates a signal causing the capacitor to discharge upon detecting a first ... | 06/21/2007 |
| 20070139159 | Clock generation circuit A circuit according to one embodiment of the present invention includes a first frequency to voltage converter for storing a reference voltage based on a frequency of an incoming signal, and a second frequency to voltage converter for storing a second voltage based on t... | 06/21/2007 |
| 20070139116 | Fully differential amplifier with continuous-time offset reduction Fully differential amplifier circuits are described herein that set the common mode voltage as well as reduce the output offset voltage (offset cancellation). A circuit according to one embodiment includes a first section for generating first and second output signals o... | 06/21/2007 |
| 20070118309 | BATTERY MONITOR Circuit and methods for tracking the total amount of time that a host device has spent in its high power “activated” state (and optionally idle and hibernate states) and thereby can estimate the total power consumed by the host device. A value representing this time... | 05/24/2007 |
| 20070040272 | Method of packaging and interconnection of integrated circuits A semiconductor chip packaging on a flexible substrate is disclosed. The chip and the flexible substrate are provided with corresponding raised and indented micron-scale contact pads with the indented contact pads partially filled with a liquid amalgam. After low temper... | 02/22/2007 |
| 20070040258 | Method of packaging and interconnection of integrated circuits A method is disclosed for packaging semiconductor chips on a flexible substrate employing thin film transfer. The semiconductor chips are placed on a temporary adhesive substrate, then covered by a permanent flexible substrate with a casting layer for planarizingly embe... | 02/22/2007 |
| 20070018794 | Selective RF device activation Systems and methods for activating one or more devices are disclosed. According to one embodiment, the device listens for an activate code, the activate code having a length field and a mask field, the mask field including a mask value, the length field specifying a len... | 01/25/2007 |
| 20070018793 | Ramped interrogation power levels A method for communicating with a plurality of radio frequency (RF) devices includes transmitting a first signal at a first power level, interrogating RF devices responding to the first signal, instructing the responding RF devices to change state, and transmitting a se... | 01/25/2007 |
| 20070009827 | Lamination and delamination technique for thin film processing This invention discloses a releasable adhesion layer having good adhesion during high temperature fabrication process in the absence of light, and delaminating at a lower temperature in the presence of light. One embodiment of this invention is a film of polymer whose t... | 01/11/2007 |
| 20060273171 | Differential input circuit with process variation and temperature compensation Systems with semiconductor devices that are DC-biased at either their weak inversion (i.e., sub-threshold) region or their strong inversion region. In a preferred embodiment using semiconductor devices (e.g., NMOS, PMOS, etc.), a gate to source voltage (Vgs) is slightly... | 12/07/2006 |
| 20060265181 | Battery monitor A circuit tracks the total amount of time that a host device has spent in its high power “activated” state (an optionally idle and hibernate states) and thereby can estimate the total power consumed by the tag. A remote device can query the state of a counter storin... | 11/23/2006 |
| 20060255131 | Smart tag activation Systems and methods for activating devices such as RFID tags includes activating a device if an activate command matches a value stored on the device. The activate command can also define which mode of operation or state the device will initiation in, and whether an add... | 11/16/2006 |
| 20060250251 | Semi-transparent RFID tags A “semi-transparent” antenna and Radio Frequency (RF) device implementing the same. The semi-transparent antenna gathers some of the RF energy in a carrier signal, but most of the energy in the RF wave does not couple into the antenna. Accordingly, because the anten... | 11/09/2006 |
| 20060250220 | Accurate persistent nodes A timing circuit that can function as an accurate persistent node in an RFID tag includes a power capture circuit for capturing power from a power source, and a counter circuit that provides a count representing a progression of time. The count can then be compared to a... | 11/09/2006 |
| 20060208958 | Compact omni-directional RF system A radio frequency (RF) system having omindirectional functionality includes a supporting substrate, a circuit coupled to the substrate, and an antenna coupled to the circuit, the antenna having multiple lobes, wherein responses from the lobes are demodulated and combine... | 09/21/2006 |
| 20060208898 | Compact omnidirectional RF system A radio frequency (RF) system having omnidirectional functionality, such that the antenna is functional in a generally isotropic manner. The system in one embodiment includes a supporting substrate, a circuit coupled to the substrate, and an antenna coupled to the circu... | 09/21/2006 |
| 20060183454 | Adaptive coherent RFID reader carrier cancellation Systems and methods for adaptive cancellation of carrier content includes receiving a signal, adaptively detecting an amount of carrier content in the received signal, generating a feedback signal for canceling out the carrier content in the incoming signal, and introdu... | 08/17/2006 |
| 20060087407 | Master tags A method for creating a hierarchy of radio frequency identification (RFID) tags and the resultant system include associating each of a plurality of first RFID tags with an individual object of a plurality of objects, each first RFID tag storing identification informatio... | 04/27/2006 |
| 20050123133 | Security system and method A first embodiment provides a process and system for simple, secure exchange of random numbers between two devices by combining a random number and a secret code (e.g., password) to generate a first challenge code, extracting the random number using the password at the ... | 06/09/2005 |
| 20050121526 | Battery activation circuit A system and method for selectively activating a device based on an activate command. A circuit, in low power mode, listens for an activate command. The activate command includes a preamplifer centering sequence, an interrupt signal, and an activate code. The circuit re... | 06/09/2005 |
