Quotables
"We are probably nearing the limit of all we can know about astronomy."
Simon Newcomb, astronomer ; 1888
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8174367 | Causing RFID tags to backscatter more codes RFID reader systems, readers, components, software and methods for causing RFID tags to backscatter a combination made from at least portions of a first code and a second code stored in tag memory, without transmitting any commands in the interim. In a number of emb... | 05/08/2012 |
| 8154385 | Local processing of received RFID tag responses Radio frequency identification (RFID) tags selected for inventorying using combination of preselect and/or post select criteria. The selection commands can be for selecting according to a tag memory content, by invoking the mask address or by comparing other tag cha... | 04/10/2012 |
| 8134451 | RFID tag chips and tags capable of backscattering more codes and methods RFID tags and chips for RFID tags store a first code and a second code in memory. They are capable of backscattering a combination made from at least portions of the first code and the second code, without receiving any commands in the interim. In a number of embodi... | 03/13/2012 |
| 8120494 | RFID readers and systems with antenna switching upon detecting too few tags and methods RFID readers, reader systems, and methods are provided that utilize smart antenna switching. A first signal is transmitted from a first antenna estimating presence of tags within the antennas field of view. If fewer than a predefined number of tags are estimated, th... | 02/21/2012 |
| 8115597 | RFID tags with synchronous power rectifier The present disclosure provides a power rectifier for a Radio Frequency Identification tag circuit. The rectifier is constructed from a pair of complementary MOS transistors. Gates of the transistors have predetermined voltages applied to them. The applied voltages ... | 02/14/2012 |
| 8115590 | RFID readers limiting theft of confidential information RFID reader and methods of operating an RFID reader are provided to limit or prevent the issuing of confidential information such as encryption keys, passwords, shared secrets, and the like to RFID tags if a reader is not authorized. The reader may determine its aut... | 02/14/2012 |
| 8082556 | Extending an RFID reader API The present disclosure provides a Radio Frequency Identification (RFID) reader software structure and method. A functionality of a reader engine is extended, enabling it to communicate via an extended standard Application Programming Interface (API) with an applicat... | 12/20/2011 |
| 8077013 | RFID reader Q-parameter aided by RF power measurement RFID tag responses are detected by an RFID reader system. The tag response may be detected based on a reference measurement during a tag silent period and another one during the tag response. This helps determine whether a slot is empty or occupied, in a slotted alo... | 12/13/2011 |
| 8072329 | Voltage regulators using a resistive chain to bias a native transistor The present disclosure provides examples of a voltage regulator for a Radio Frequency Identification tag circuit. The voltage regulator includes a pair of native transistors. A first native transistor is coupled to a reference voltage and biased to saturation. A res... | 12/06/2011 |
| 8072327 | Causing RFID tags to reply using changed reply timing RFID reader systems, readers, components, software and methods cause RFID tags to reply using changed reply timing. In a number of embodiments, this timing change is achieved by causing a custom timing command to be transmitted to a tag. In some embodiments, the cha... | 12/06/2011 |
| 8063740 | Interfacing to RFID reader utility that causes RFID tags to reply using changed reply timing Interfacing is provided, to a utility of an RFID reader. The utility causes the RFID reader to instruct tags to reply using changed reply timing. The interfacing enables an agent to control the utility, for installing it, configuring it, enabling it, disabling it, o... | 11/22/2011 |
| 8044801 | RFID tag with double-switch rectifier The present disclosure provides a power rectifier for a Radio Frequency Identification tag circuit. The power rectifier is constructed from a pair of complementary MOS transistors. Gates of the transistors have predetermined voltages applied to them. The applied vol... | 10/25/2011 |
| 8044774 | RFID tag chips and tags able to be partially killed and methods RFID tag circuits, tags, and methods are provided for receiving a partial-kill command. In response to receiving such a command, the tag circuit or tag becomes partially killed. This means that one or more but not all of its memory functions become disabled. ... | 10/25/2011 |
| 7999675 | RFID tags replying using changed reply timing RFID tags and chips for RFID tags are capable of replying using changed reply timing. In a number of embodiments, this timing change is achieved when a tag receives a custom timing command from an RFID reader. In some embodiments, the changed reply timing affects an... | 08/16/2011 |
| 7990249 | RFID tag circuits tags and methods for backscattering with controllable admittance RFID tag circuits, tags, and methods are provided for backscattering a received RF wave using a controllable admittance difference between the ON state and the OFF state. The admittance difference is controlled responsive to a control signal. In some embodiments, th... | 08/02/2011 |
| 7982611 | Dealing with rogue RFID readers using reader attributes Rogue RFID readers are detected by listening to communication between rogue reader and a tag, capturing a time stamp and/or a channel associated with the communication, and checking the captured time stamp/channel to determine whether it is a result of a command fro... | 07/19/2011 |
| 7978005 | Reference current generator with low temperature coefficient dependence Embodiments of the invention describe a core circuit for a reference current generator circuit that biases a first transistor to source a first current and a second transistor parallel to the first transistor, biased to source a second current controlled by the firs... | 07/12/2011 |
| 7973645 | RFID reader devices and methods thereof Radio frequency identification (RFID) reader devices are disclosed. An RFID reader device of one aspect may include a radio frequency (RF) output port operable to allow a plurality of RFID antenna modules to be coupled with the RFID reader device. An RF signal gener... | 07/05/2011 |
| 7973643 | RFID readers transmitting preambles denoting data rate and methods RFID readers transmit data to query tags at one or more data rates. Before transmitting data, the RFID readers also transmit special preambles that inform of the data rate that will be used for transmitting the data. The preambles have a call aspect and a rate aspec... | 07/05/2011 |
| 7969236 | Reference current generator with low temperature coefficient dependence Embodiments of the invention describe a core circuit for a reference current generator circuit that biases a first transistor to source a first current and a second transistor parallel to the first transistor, biased to source a second current controlled by the firs... | 06/28/2011 |
| 7920046 | RFID readers and systems initializing after antenna switch and methods RFID readers, reader systems, and methods are provided for processing RFID tags through interruptions for antenna change or other reasons. If the reason for the interruption is an antenna change, the reader restarts processing the tags initializing any operational p... | 04/05/2011 |
| 7917088 | Adaptable detection threshold for RFID tags and chips RFID tags, tag circuits, and methods are provided that reduce at least in part the distortion to received wireless signals, which is caused by interference in the environment. Two or more thresholds are used to digitize the received signal implemented by two or more... | 03/29/2011 |
| 7907899 | RFID tags having a rectifier circuit including a dual-terminal rectifier device Apparatus and method for generating a rectified output signal in a RFID tag from first and second alternating signals. A dual-terminal rectifier device has first and second input terminals to which the first and second alternating signals are applied, and further ha... | 03/15/2011 |
| 7872582 | RFID tag chips and tags with alternative memory lock bits and methods RFID tag circuits, tags, and methods are provided for using alternative memory lock bits. A pointer in tag memory is configured to point to one or the other of the alternative lock bits associated with a section of the memory for performing a function in response to... | 01/18/2011 |
| 7830322 | RFID reader antenna assembly An antenna system for a reader configured to interact with RFID tags includes one or more antenna elements electrically coupled to the reader for transmission and reception of RFID signals. In one embodiment the antenna elements include a conductive plate, a first e... | 11/09/2010 |
| 7830262 | Adjusting communication parameters while inventorying RFID tags RFID reader systems, readers, components, software and methods are provided for inventorying RFID tags. In some embodiments, a population of RFID tags begins being inventoried using a first set of communication parameters, and then continues using a second set of co... | 11/09/2010 |
| 7808387 | Voltage reference circuit with low-power bandgap The present disclosure provides for a voltage reference circuit for Radio Frequency Identification (RFID) tag circuit. Such a circuit is formed in a substrate that is lightly doped with impurities of a first polarity. A first transistor having a first source connect... | 10/05/2010 |
| 7768406 | RFID tag circuit rectifier with controlled backflow reduction The present disclosure provides a power rectifier for a Radio Frequency Identification tag circuit. The power rectifier can be constructed from serially coupled rectifier stages. One of the rectifier stages includes a backflow reduction device or a bias preservation... | 08/03/2010 |
| 7768248 | Devices, systems and methods for generating reference current from voltage differential having low temperature coefficient Embodiments of the invention describe a reference current generator circuit having a core circuit that includes a first transistor in a first current path for conduct a first current and a second transistor in a second current path for conduct a second current. The ... | 08/03/2010 |
| D620928 | RFID tag antenna | 08/03/2010 |
| D620484 | RFID tag antenna | 07/27/2010 |
| D617320 | RFID tag antenna | 06/08/2010 |
| 7696882 | Reading codes of RFID tags incoming at premises and removing them later as they exit RFID reader systems, components, software and methods are provided for use premises that have RFID-tagged items. When a person comes onto an enclosure of the premises already carrying a personal tag, the incoming code of that personal tag is read. When later the per... | 04/13/2010 |
| D613276 | Set of waveguide assisted antenna elements for RFID tags | 04/06/2010 |
| D611037 | RFID tag antenna | 03/02/2010 |
| 7667589 | RFID tag uncoupling one of its antenna ports and methods RFID tags have an on-chip antenna and an off-chip antenna. One of the antennas can become uncoupled if the proper signal is received, while the other antenna may still operate. The uncoupled antenna can be the larger one, for example the off-chip antenna. Then the t... | 02/23/2010 |
| 7667231 | Automatic on-die defect isolation Microcircuits may include polysilicon features that are vulnerable to defects due to undesirable phenomena during manufacturing processes such as, inter alia, over-etching. The same phenomena that may cause defects can be exploited to automatically isolate the affec... | 02/23/2010 |
| D610576 | Set of waveguide assisted antenna elements for RFID tags | 02/23/2010 |
| 7651882 | RFID tag circuit die with shielding layer to control I/O bump flow The present description describes back-end processes, the use of which may help overcome these problems and limitations of the prior art. In one optional embodiment, the back-end process includes depositing a layer over a wafer. The wafer contains a plurality of cir... | 01/26/2010 |
| 7633376 | Reporting on authentication of RFID tags for indicating legitimacy of their associated items RFID readers, computers, and methods are provided for reporting on the authentication of one or more RFID tags associated with a proffered item, while requiring special permissions be cleared before reporting. In some embodiments, a question is input about whether a... | 12/15/2009 |
