Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 8188839 | Truncation, compression, and encryption of RFID tag communications Methods, systems, and apparatuses for RFID tags, RFID readers, communications algorithms, and RFID-related applications are described herein. In an aspect of the invention, an RFID tag is capable of storing data, receiving a signal from a reader, determining a respo... | 05/29/2012 |
| 8174365 | IC tag, method of controlling the IC tag, and IC tag system To provide an IC tag, a method of controlling the IC tag, and an IC tag system which can reduce a communication sequence between the reader/writer and the IC tag and can shorten a communication period or a period necessary for executing the command. According to an ... | 05/08/2012 |
| 8164425 | Interrogator used in RFID system In RFID system having a plurality of reader/writers, the interface between the reader/writers can be reduced without any degradation of communication throughput. The plurality of reader/writers transmit/receive radio signals to/from RF tags. The reader/writers infor... | 04/24/2012 |
| 8154387 | RFID tag An electronic tag is configured to be responsive to a TTO or TTF protocol energizing signal from a reader, but to suspend transmission when receiving an RTF protocol communication signal from a reader. The tag typically includes a protocol detector 120 which ... | 04/10/2012 |
| 8149094 | Clustering methods for radio-frequency-identifier networks Methods and systems of the present invention are directed to clustering RFID-tag readers of a multi-RFID-tag-reader network in order to obtain a set of RFID-tag readers with high probability of detecting an event, but with low probability of collisions and with an a... | 04/03/2012 |
| 8143996 | Decentralized radio frequency identification system A decentralized RFID system and method provides a decentralized power control scheme for adaptively adjusting the power of a RFID reader in a network of readers communicating with an RFID tag. The transmission power of each reader in a dense network environment is c... | 03/27/2012 |
| 8134452 | 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... | 03/13/2012 |
| 8130079 | Methods, systems, and products for discovering electronic devices Methods, systems, and products are disclosed for controlling an electronic device. A query is received at a remote control interface. A response to the query is determined. A random response interval of time is determined according/to a collision avoidance mechanism... | 03/06/2012 |
| 8120469 | Method and system for tuning an RFID interrogator A method, apparatus, and system for periodically measuring the level of ambient noise found on a radio frequency channel used by a radio frequency identification interrogator to read radio frequency identification tags. The measured level of ambient noise is then us... | 02/21/2012 |
| 8115601 | Control device, RFID tag reading system and RFID tag reader It is an object of the present invention to avoid communication congestion and collision by effectively assigning a unit radio channel for transmission and reception to RFID tag readers using the same unit radio channel group. Herein disclosed is an RFID tag reading... | 02/14/2012 |
| 8115602 | Tag estimation method and tag identification method for RFID system Provided are a tag estimation method and a tag identification method using the same in a RFID system. In the tag estimating method, a reader divides tags in an identifiable area into a predetermined number of groups. Tags are identified by applying a pilot frame L | 02/14/2012 |
| 8102244 | Methods and apparatuses to identify devices An apparatus and method to identify devices including a first set of commands to identify devices in a first state and a second set of commands to identify devices in a second state, wherein devices identified in the first state are placed in the second state and de... | 01/24/2012 |
| 8098135 | Coordination of radio frequency communications amongst radio frequency identification (RFID) readers Methods and apparatuses are described for reducing interference amongst frequency identification (RFID) readers operating within an interference range. Groups of frequencies from a range of frequencies are determined such that RFID readers transmitting on adjacent f... | 01/17/2012 |
| 8098134 | Systems and methods for interrogator multiple radio frequency identification enabled documents A multi-document read-write station provides the ability to read/write to a stack of Radio Frequency Identification (RFID) tags within a small area. Specifically, the station provides the ability to read from and write to a tall stack of RFID tagged sheets with the ... | 01/17/2012 |
| 8093989 | Method and system for scheduling multi-radio-frequency-identification-tag-reader networks to increase interrogation efficiency Methods and systems of the present invention employ perturbation techniques for configuring RFID-tag-reader networks in order to achieve increased overall efficiency of a network of RFID-tag readers. According to described embodiments of the present invention, indiv... | 01/10/2012 |
| 8089344 | Method and system for miniature passive RFID tags and readers This invention makes possible small size, long range, reliable, low-power, low-cost RFIDs fulfilling the needs of the industry and the roadmap set for RFID, as by Walmart and the DoD. Tag energization and data communication take place by independent means. The inven... | 01/03/2012 |
| 8085132 | Method and apparatus for resolving RFID-based object traffic transactions to a single object in the presence of a plurality of objects A method for resolving RFID-based object traffic transactions to a single object in the presence of a plurality of objects, where the method includes the steps of: monitoring RFID object traffic transactions to a single object amongst a plurality of objects wherein ... | 12/27/2011 |
| 8085131 | System for tag estimation and anti-collision and method thereof The present application discloses a system and a method for tag estimation and anti-collision in an RFID system, which can estimate an exact number of tags within an RF area and can rapidly identify tags by using the estimated number of tags in an RFID system. The s... | 12/27/2011 |
| 8081063 | Systems and methods for Q value determination Systems and methods for determining a Q value for a subsequent inventory round can include a radio frequency identification (RFID) interrogator determining at least one of: a number of empty slots, a number of collided slots, and a number of singly occupied slots, i... | 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 |
| 8063745 | Air conditioner and address setting method in air conditioner A serial number detection portion simultaneously transmits a detection command for requesting a first digit of a serial number to plurality of indoor units, and the serial number detection portion simultaneously transmits a detection command for requesting a second ... | 11/22/2011 |
| 8054162 | Communication method in RFID or remote sensor systems A method for communicating between a control unit and a plurality of remote units located in the response area of the control unit is provided. The remote units are prompted to transmit a data sequence to the control unit upon receipt of a command sent by the contro... | 11/08/2011 |
| 8044773 | Parallel RFID system using CDMA Various embodiments of the invention may use code division multiple access (CDMA) technology in communications from radio frequency identification (RFID) tags to RFID readers, so that multiple RFID tags may respond to the same RFID reader at the same time on the sam... | 10/25/2011 |
| 8022814 | Systems and methods for slot classification Systems and methods for inventory round slot classification are described. The method includes transmitting, to zero or more RFID tags, a message during a slot of an inventory round and receiving a response from at least some of the zero or more RFID tags. The metho... | 09/20/2011 |
| 8022813 | Method of inventorizing a plurality of data carriers In a method of inventorizing a plurality of data carriers (2) with the aid of a communication station (1) communicating in a contact-free way with the data carriers (2), a set (TS(1), TS(2), . . . TS(N), TS(N+1), . . . (TS(K)) of t... | 09/20/2011 |
| 7999658 | Methods and apparatus for operating a radio device A radio device such as a wireless tag reader communicates with multiple types of wireless identification tags in a monitored region. The radio device includes a network interface to receive messages transmitted over a network. In response to receiving a message indi... | 08/16/2011 |
| 7978050 | Systems and methods for providing quality of service to RFID Embodiments of the present invention include systems and methods for providing Quality of service to RFID. In one embodiment the present invention includes a method of providing quality of service in an RFID network comprising storing RFID priority information corre... | 07/12/2011 |
| 7969282 | Optimized operation of a dense reader system Methods, systems and apparatuses for RFID readers forming a reader network are described. In an aspect of the present invention, a plurality of RFID readers are configured to interrogate tags. Furthermore, the readers are configured to communicate with one another. ... | 06/28/2011 |
| 7961078 | Methods and apparatus for operating a radio device A radio device such as a wireless tag reader communicates with multiple types of wireless identification tags in a monitored region. The radio device includes a network interface to receive messages transmitted over a network. In response to receiving a message indi... | 06/14/2011 |
| 7940161 | Reader/writer and data communication method A reader/writer transmitting and receiving data, through wireless communications, to and from a passive type wireless tag having a nonvolatile storage unit, includes a tag selection unit selecting a target wireless tag performing the wireless communications with the... | 05/10/2011 |
| 7911325 | Communication system, and endpoint device and interrogator A communication system wherein each endpoint device which has received an interrogating signal from an interrogator responds with a reflected signal generated by modulating the interrogating signal with appropriate information, wherein each endpoint device includes ... | 03/22/2011 |
| 7898391 | Multi-reader coordination in RFID system A method of operating a plurality of Radio Frequency Identification (RFID) readers includes operating the readers according to a spatial-division and time-division synchronization schedule. Each reader may be associated with a reader group, and the schedule may spec... | 03/01/2011 |
| 7893815 | Method for selecting one or several transponders A method for selecting at least one transponder or a sensor in RFID or remote-sensor systems provided with a plurality of transponders or sensors (tags), in particular in systems provided with a plurality of reading devices, is disclosed. The inventive method includ... | 02/22/2011 |
| 7889058 | Radio-tag reading system, radio-tag reader, and radio tag The radio-tag reading system includes a radio-tag reader and a radio tag storing therein radio tag information. In the radio-tag reader, a radio-tag detection processor transmits via the communication unit a search signal at a predetermined time interval, and detect... | 02/15/2011 |
| 7889057 | RFID reader Provided are an RFID reader reading data from an RFID tag using a wireless connection over a specified frequency bandwidth, including a transmitting unit synthesizing sequentially and cumulatively frequency control signals generated every clock, mixing the synthesiz... | 02/15/2011 |
| 7880587 | Communication system and anti-collision method In a receiving method for the contactless reception of identification information (I1,12), which is stored in a data carrier (3, 3′) and which can be received from the data carrier (3, 3) in a contactless manner in the form of information unit... | 02/01/2011 |
| 7834741 | Data carrier circuit capable of supplying identification information to a communications arrangement Circuit for a data carrier, which circuit is capable of supplying identification information to a communications arrangement. A circuit (4) for a data carrier (3), which is able to communicate contactlessly with a communications arrangement (2),... | 11/16/2010 |
| 7821378 | Apparatus and method for receiving tag signal in mobile RFID reader Provided are a tag signal receiving apparatus that can perform digital Amplitude Shift Keying (ASK) demodulation onto signals received in a tag, decode the demodulated tag signal in synchronization, and acquire tag data in a mobile RFID reader, and a method thereof.... | 10/26/2010 |
| 7812707 | Communication system, and interrogator and transponder of the system A communication system including: (a) a plurality of interrogators; and (b) at least one transponder operable, upon reception of an interrogating wave transmitted from each of the interrogators, to respond to the interrogator with a reflected wave which is generated... | 10/12/2010 |
| 7796015 | Wireless terminal and RFID system for providing additional information and a method for providing additional information using wireless terminal and RFID system A wireless terminal and a radio frequency identification system for providing additional information and a method of providing additional information using the wireless terminal and the radio frequency identification system. The wireless terminal includes: a tag rea... | 09/14/2010 |
