Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 8179232 | RFID interrogator with adjustable signal characteristics A radio frequency identification (RFID) interrogator housed in a portable platform that includes at least one antenna, a transceiver for transmitting and receiving a radio frequency (RF) signal through the antenna, and a controller in communication with the transcei... | 05/15/2012 |
| 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 |
| 8174368 | Reading method, responder, and interrogator Transmission and reception of the identification number to/from an interrogator includes an interrogator that reads a recognition number from a responder by radio. When a clock pulse is modulated on a high-frequency carrier and transmitted to the responder from the ... | 05/08/2012 |
| 8164426 | System and method for producing and distributing digital images including data identifying subjects being photographed A system and method is provided for taking digital photographs of subjects and for distributing digital images from the photographs according to subject identifiers transmitted from RFID tags held with the subjects. With a first embodiment, data from photographs tak... | 04/24/2012 |
| 8154388 | Synchronous-phase contactless demodulation method, and associated demodulator and reader A method of demodulating signals of an electromagnetic field induced by a contactless transponder includes a step in which the signals from the transponder are detected at given times or frequency. The times or frequency of the detection are synchronized in phase wi... | 04/10/2012 |
| 8143998 | Noncontact IC card communication system and communication method Communication processing is performed so as to correspond to multiple types of contactless IC cards having different specifications, such as command classes and security algorithms. Without performing a process for a command or response result communicated with an I... | 03/27/2012 |
| 8138892 | Variable frequency tag An antenna assembly is operative for receiving interrogating radiation at a variable frequency tag and generating a corresponding received signal, and for receiving a signature signal and radiating corresponding response radiation. A logic unit is operative for rece... | 03/20/2012 |
| 8125317 | Portable device for caching RFID tag and method thereof A portable device includes an RFID reader for detecting a tag information of an RFID tag, a memory for storing the tag information detected by the RFID reader, and a controller. When a read command for the RFID tag is input and the tag information is valid, the cont... | 02/28/2012 |
| 8125316 | RFID material tracking method and apparatus A method and apparatus for tracking items automatically is described. A passive RFID (Radio Frequency IDentification) tag is used with a material tracking system capable of real-time pinpoint location and identification of thousands of items in production and storag... | 02/28/2012 |
| 8111140 | Transponder load modulation An electromagnetic transponder and a method for controlling by pulse trains a switch for modulating the load of this transponder in an electromagnetic field from which it extracts its power supply, the duty ratio of the pulses being controlled according to the trans... | 02/07/2012 |
| 8098136 | Integrated switch systems and methods for locating identification tags Integrated switch systems and methods for locating ID tags are disclosed. One system includes an application, a plurality of different tag readers in communication with the ID tags, and an integrated switch configured to enable the application to receive tag informa... | 01/17/2012 |
| 8093991 | RFID detection and identification system for implantable medical devices An RFID tag is disposed within a hermetically sealed housing of an IMD. Low frequency RFID interrogators and tags are used, and the housing walls are made of materials, and/or are reduced in thickness, to facilitate RF communication between the RFID tag and an RFID ... | 01/10/2012 |
| 8085133 | RFID interrogator Embodiments of the invention relate to the field of RFID interrogators, particularly RFID interrogators that combine low loss with high rates of communication from the interrogator to a tag. We describe a transmitter comprising a resonant circuit and a driver couple... | 12/27/2011 |
| 8072313 | RFID interrogator with improved symbol decoding and systems based thereon An improved Interrogator for use in a radio frequency identification system wherein at least one tag modulates a radio frequency signal by modulated backscatter operations. ... | 12/06/2011 |
| 8072314 | Secondary card reader A secondary reader and associated system are disclosed. In some embodiments, a secondary reader obtains and communicates information about a reading of an RFID tag by a primary reader by receiving an RFID signal that is responsive to a signal from the primary reader... | 12/06/2011 |
| 8068011 | System and method for interactive user-directed interfacing between handheld devices and RFID media Systems and methods for interactively interfacing handheld devices and RFID media are described. A method for interactively interfacing HHDs and RFID media. The method includes starting an application on a HHD for interfacing with RFID media, the HHD including a RFI... | 11/29/2011 |
| 8068010 | Chipless RFID tag and method for communicating with the RFID tag A radio frequency identification (RFID) tag and a method and system for communicating with the RFID tag. The RFID tag includes a first and second structure respectively holding first data and second data that is complementary to the first data. The RFID tag does not... | 11/29/2011 |
| 8063747 | RFID tag, interrogator and system with improved symbol encoding and decoding An improved RFID Tag, Interrogator, and system wherein at least one tag modulates a radio frequency signal by modulated backscatter operations. ... | 11/22/2011 |
| 8018323 | RFID sensor device based on pulse-processing A radio frequency identification device having sensing elements incorporated in the clock generators of its tags, which generate a leading code and an identification code. In the interrogator, the leading code is detected and its pulse width is measured for calculat... | 09/13/2011 |
| 7982586 | Wireless communication systems, interrogators and methods of communicating within a wireless communication system A wireless communication system includes an interrogator including a housing including circuitry configured to generate a forward link communication signal; communication circuitry configured to communicate the forward link communication signal; and a communication ... | 07/19/2011 |
| 7973646 | Method and apparatus for inspecting radio frequency identification tags A method and an apparatus for inspecting radio frequency identification (RFID) tags which utilize a way of shielding for inspecting whether RFID tags function properly or not. The method of the present invention comprises steps of: reading a plurality of RFID tags i... | 07/05/2011 |
| 7969284 | Wireless communication systems, interrogators and methods of communicating within a wireless communication system A wireless communication system includes an interrogator including a housing including circuitry configured to generate a forward link communication signal; communication circuitry configured to communicate the forward link communication signal; and a communication ... | 06/28/2011 |
| 7932814 | Method and system to determine physical parameters as between a RFID tag and a reader A method and system to determine physical parameters as between a RFID tag and a reader. At least some of the illustrative embodiments are methods comprising generating an antenna feed signal, and transmitting a first electromagnetic wave to a radio frequency device... | 04/26/2011 |
| 7920050 | Proxy device for enhanced privacy in an RFID system A proxy device is disclosed for use in an RFID system comprising a plurality of RFID devices and at least one reader which communicates with the proxy device and one or more of the RFID devices. The proxy device acquires information characterizing at least a given o... | 04/05/2011 |
| 7834743 | RFID tag and RFID tag communication distance modification method It is possible to prevent an unauthorized read-out from both active tags and passive tags. Antenna emission is turned on and off by using a switch, or attenuated by using a resistor. A part of the antenna may be chipped. With these configurations, it is possible to ... | 11/16/2010 |
| 7825773 | Mobile radio frequency identification (mRFID) reader A mobile radio frequency identification (mRFID) reader having a receiving circuit is provided. The receiving circuit includes a local oscillator which generates a carrier signal at a predetermined frequency band; a mixer which mixes a tag signal received from a tag ... | 11/02/2010 |
| 7825774 | Radio frequency communications devices 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 integra... | 11/02/2010 |
| 7817015 | Floating threshold for data detection in a RFID tag A radio frequency identification (RFID) tag is provided with a capability to adaptively initiate a floating RF threshold from the level of a raw RF signal detected during a communication session with a designated RFID reader, and to compare that threshold with the l... | 10/19/2010 |
| 7817014 | Scheduling in an RFID system having a coordinated RFID tag reader array A system and method of scheduling RFID tag interrogations by a plurality of RFID readers so as to mitigate the effects of interference within an RFID environment in which the readers are deployed, and to enhance the efficiency and reliability of the overall RFID sys... | 10/19/2010 |
| 7796016 | Radio communication system, radio communication device, and radio communication method A radio communication system performs data communication by a backscatter system using absorption and reflection of a received radio wave. In the system, a data reading device transmits an unmodulated carrier of frequency fO; a data transmitting device su... | 09/14/2010 |
| 7786845 | Method and apparatus for wireless communication of identification information between radio frequency devices Identification information is wirelessly communicated between radio frequency devices. In one embodiment, a first wireless device transmits a signal to request identification information. Other wireless devices are each affixed a respective item, and each of the oth... | 08/31/2010 |
| 7777610 | Radio frequency identification apparatuses In one embodiment, a method includes transmitting a signal from a wireless transmitter to a radio frequency (RF) device of a plurality of RF devices within a communication range of the transmitter. The signal is to select a group of the RF devices. A reply signal is... | 08/17/2010 |
| 7772963 | System and method for synchronization of data streams A method of and system for acquiring data by a data reader from a transponder in which the data from the transponder does not require a preamble to denote the beginning of the data sequence. A radio frequency signal is continuously transmitted by the card reader to ... | 08/10/2010 |
| 7750792 | Multi-mode tags and methods of making and using the same Multi-mode (e.g., EAS and RFID) tags and methods for making and using the same are disclosed. The tag generally includes an antenna, an electronic article surveillance (EAS) function block coupled to the antenna, and one or more identification function blocks couple... | 07/06/2010 |
| 7737824 | Radio frequency identification (RFID) tag, portable terminal, and server for RFID tag A hierarchical structure is established among a plurality of RFID tags, such that ID numbers can be read only from RFID tags which belong to a particular layer. RFID tag can control whether permission should be given to read its ID number therefrom to protect the ID... | 06/15/2010 |
| 7733218 | RFID tag receive signal strength indicator Methods, systems, and apparatuses for detecting a reader signal strength in a radio frequency identification (RFID) tag is described. A tag is configured to monitor an attribute of a reader transmitted signal, such as the signal strength. The tag generates an indica... | 06/08/2010 |
| 7728714 | Method and apparatus for detecting end of response signal on radio frequency identification tag When a reader of a Radio Frequency Identification (RF-ID) system sends out a command signal to the RF-ID tag and receives a response signal from the RF-ID tag, an End of Signal (EOS) of the received response signal is detected such that the next command signal can b... | 06/01/2010 |
| 7728713 | 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 ... | 06/01/2010 |
| 7683762 | Method and system for acquiring maintenance information by an RFID tag A control apparatus 10 has a housing containing an IC memory 25 of an RFID tag 20 as a memory element. The RFID tag 20 has an antenna 21 so as to close the housing. The antenna 21 may be attached to an outside of the housing... | 03/23/2010 |
| 7592898 | Wireless communication systems, interrogators and methods of communicating within a wireless communication system A wireless communication system includes an interrogator including a housing including circuitry configured to generate a forward link communication signal; communication circuitry configured to communicate the forward link communication signal; and a communication ... | 09/22/2009 |
