Patents by Inventor Edward M. Farrell
Edward M. Farrell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9792470Abstract: One embodiment of the present invention includes a Radio Frequency Identification (RFID) reader configured to detect radio frequency (RF) interference in and/or outside a band of RFID operation. The RFID reader includes a receive channel for receiving incoming RF signals; and hardware for detecting interference in and/or outside a band of RFID operation. A method for mitigating radio frequency (RF) interference in and/or outside a band of RFID operation, according to one embodiment, includes detecting interference in and/or outside a band of RFID operation; and controlling an aspect of operation of the RFID reader for mitigating the detected interference.Type: GrantFiled: March 28, 2013Date of Patent: October 17, 2017Assignee: ZEST LABS, INC.Inventors: Dean Kawaguchi, Edward M. Farrell, Prasad Panchalan, Manu H. R. Rao
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Patent number: 8994502Abstract: A method according to one embodiment includes conummicating with a radio frequency identification (RFID) tag coupled to a reusable transport item (RTI); and determining whether the RTI has passed a predetermined useful lifetime thereof based on information received from the RFID tag. A method according to one embodiment includes conummicating with a radio frequency identification (RFID) tag coupled to a reusable transport item (RTI); and determining both a horizontal and vertical position of the RTI. A method according to yet another embodiment includes communicating with a radio frequency identification (RFID) tag coupled to a reusable transport item (RTI); and performing an action based at least in part on at least one of a location and a determined inactivity of the RTI.Type: GrantFiled: March 2, 2012Date of Patent: March 31, 2015Assignee: Intelleflex CorporationInventors: Dean Kawaguchi, Edward M. Farrell, Edmond Sardariani, Peter Arnold Mehring
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Patent number: 8823493Abstract: In one embodiment, a RFID reader circuit includes a RF source input in a transmitting path, a RF modulator in parallel with a bypass, the RF modulator and the bypass being selectively coupled to the RF source input, at least one switch for selectively coupling an output of the RF modulator to the transmitting path, and a RF power amplifier in the transmitting path. In another embodiment, a RFID system includes a plurality of RFID tags, and a RFID reader, the RFID reader comprising a RFID reader circuit. The circuit includes a RF source input in a transmitting path, a RF modulator in parallel with a bypass, the RF modulator and the bypass being selectively coupled to the RF source input, at least one switch for selectively coupling an output of the RF modulator to the transmitting path, and a RF power amplifier in the transmitting path.Type: GrantFiled: June 11, 2010Date of Patent: September 2, 2014Assignee: Intelleflex CorporationInventors: Prasad Panchalan, Edward M. Farrell
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Patent number: 8766775Abstract: In one embodiment, a Radio Frequency Identification (RFID) reader circuit includes a Radio Frequency (RF) source, a RF power amplifier coupled to an output of the RF source in a transmitting path, a first RF bandpass filter coupled between the output of the RF source and a mixer module, and a low noise amplifier in a receiving path being coupled to an input of a second RF bandpass filter. The mixer module receives a signal from the first RF bandpass filter and a signal from the second RF bandpass filter, the mixer module multiplies the signal from the first RF bandpass filter with the signal from the second RF bandpass filter to recover the backscatter sidebands in the signal from the second RF bandpass filter, and the first and second RF bandpass filters provide identical or nearly identical delay of signals. Other systems, methods and circuits are also described.Type: GrantFiled: June 11, 2010Date of Patent: July 1, 2014Assignee: Intelleflex CorporationInventors: Edward M. Farrell, Prasad Panchalan
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Patent number: 8760261Abstract: In one embodiment, a RFID reader circuit includes a RF power amplifier coupled to a coupler; an amplitude and phase adjustor module coupled to an output of the coupler; a signal combiner module coupled to an output of the amplitude and phase adjustor module; and a low noise amplifier coupled to an output of the signal combiner module. In another embodiment, a RFID system includes a plurality of RFID tags; and at least one RFID reader, the at least one RFID reader comprising a RFID reader circuit, the circuit comprising: a RF power amplifier coupled to a coupler; an amplitude and phase adjustor module coupled to an output of the coupler; a signal combiner module coupled to an output of the amplitude and phase adjustor module; and a low noise amplifier coupled to an output of the signal combiner module. Other systems, methods, and circuits are described as well.Type: GrantFiled: June 11, 2010Date of Patent: June 24, 2014Assignee: Intelleflex CorporationInventors: Prasad Panchalan, Manu H. R. Rao, Edward M. Farrell
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Patent number: 8717144Abstract: A system in one embodiment includes a plurality of Radio Frequency Identification (RFID) readers, each reader being capable of using a single antenna for both transmit and receive functions, wherein, during operation, one of the readers transmits and at least another of the readers receives a response to the transmission from an RFID device. A system in another embodiment includes a plurality of Radio Frequency Identification (RFID) readers, each reader having at least one antenna mounted on a housing thereof, wherein, during operation, the reader transmitting emits a signal sufficient to communicate with a battery assisted passive RFID device at a range of at least 20 meters. Additional systems and methods are also presented.Type: GrantFiled: April 29, 2008Date of Patent: May 6, 2014Assignee: Intelleflex CorporationInventors: Dean Kawaguchi, Edward M. Farrell
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Publication number: 20130257598Abstract: One embodiment of the present invention includes a Radio Frequency Identification (RFID) reader configured to detect radio frequency (RF) interference in and/or outside a band of RFID operation. The RFID reader includes a receive channel for receiving incoming RF signals; and hardware for detecting interference in and/or outside a band of RFID operation. A method for mitigating radio frequency (RF) interference in and/or outside a band of RFID operation, according to one embodiment, includes detecting interference in and/or outside a band of RFID operation; and controlling an aspect of operation of the RFID reader for mitigating the detected interference.Type: ApplicationFiled: March 28, 2013Publication date: October 3, 2013Applicant: Intelleflex CorporationInventors: Dean Kawaguchi, Edward M. Farrell, Prasad Panchalan, Manu H. R. Rao
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Publication number: 20120223814Abstract: A method according to one embodiment includes conummicating with a radio frequency identification (RFID) tag coupled to a reusable transport item (RTI); and determining whether the RTI has passed a predetermined useful lifetime thereof based on information received from the RFID tag. A method according to one embodiment includes conummicating with a radio frequency identification (RFID) tag coupled to a reusable transport item (RTI); and determining both a horizontal and vertical position of the RTI. A method according to yet another embodiment includes communicating with a radio frequency identification (RFID) tag coupled to a reusable transport item (RTI); and performing an action based at least in part on at least one of a location and a determined inactivity of the RTI.Type: ApplicationFiled: March 2, 2012Publication date: September 6, 2012Applicant: INTELLEFLEX CORPORATIONInventors: Dean Kawaguchi, Edward M. Farrell, Edmond Sardariani, Peter Arnold Mehring
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Patent number: 8115688Abstract: An RF conduit according to one embodiment includes a pair of antennas coupled together by a transmission line such that RF tunneling occurs along the transmission line between the antennas and an RF signal received at one antenna is reradiated at the other antenna. An RF conduit according to another embodiment includes a pair of antenna traces each having first and second end portions and a central portion extending between the first and second end portions, wherein the central portions are positioned relative to each other such that they form a transmission line for RF tunneling therealong between the first ends of the antenna traces and the second ends of the antenna traces and an RF signal received at the first ends is reradiated at the second ends. Additional systems and methods are presented.Type: GrantFiled: October 24, 2008Date of Patent: February 14, 2012Assignee: Intelleflex CorporationInventor: Edward M. Farrell
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Publication number: 20110304431Abstract: In one embodiment, a Radio Frequency Identification (RFID) reader circuit includes a Radio Frequency (RF) source, a RF power amplifier coupled to an output of the RF source in a transmitting path, a first RF bandpass filter coupled between the output of the RF source and a mixer module, and a low noise amplifier in a receiving path being coupled to an input of a second RF bandpass filter. The mixer module receives a signal from the first RF bandpass filter and a signal from the second RF bandpass filter, the mixer module multiplies the signal from the first RF bandpass filter with the signal from the second RF bandpass filter to recover the backscatter sidebands in the signal from the second RF bandpass filter, and the first and second RF bandpass filters provide identical or nearly identical delay of signals. Other systems, methods and circuits are also described.Type: ApplicationFiled: June 11, 2010Publication date: December 15, 2011Inventors: Edward M. Farrell, Prasad Panchalan
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Publication number: 20110304439Abstract: In one embodiment, a RFID reader circuit includes a RF power amplifier coupled to a coupler; an amplitude and phase adjustor module coupled to an output of the coupler; a signal combiner module coupled to an output of the amplitude and phase adjustor module; and a low noise amplifier coupled to an output of the signal combiner module. In another embodiment, a RFID system includes a plurality of RFID tags; and at least one RFID reader, the at least one RFID reader comprising a RFID reader circuit, the circuit comprising: a RF power amplifier coupled to a coupler; an amplitude and phase adjustor module coupled to an output of the coupler; a signal combiner module coupled to an output of the amplitude and phase adjustor module; and a low noise amplifier coupled to an output of the signal combiner module. Other systems, methods, and circuits are described as well.Type: ApplicationFiled: June 11, 2010Publication date: December 15, 2011Inventors: Prasad Panchalan, Manu H. R. Rao, Edward M. Farrell
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Publication number: 20110304432Abstract: In one embodiment, a RFID reader circuit includes a RF source input in a transmitting path, a RF modulator in parallel with a bypass, the RF modulator and the bypass being selectively coupled to the RF source input, at least one switch for selectively coupling an output of the RF modulator to the transmitting path, and a RF power amplifier in the transmitting path. In another embodiment, a RFID system includes a plurality of RFID tags, and a RFID reader, the RFID reader comprising a RFID reader circuit. The circuit includes a RF source input in a transmitting path, a RF modulator in parallel with a bypass, the RF modulator and the bypass being selectively coupled to the RF source input, at least one switch for selectively coupling an output of the RF modulator to the transmitting path, and a RF power amplifier in the transmitting path.Type: ApplicationFiled: June 11, 2010Publication date: December 15, 2011Inventors: Prasad Panchalan, Edward M. Farrell
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Publication number: 20100103071Abstract: An RF conduit according to one embodiment includes a pair of antennas coupled together by a transmission line such that RF tunneling occurs along the transmission line between the antennas and an RF signal received at one antenna is reradiated at the other antenna. An RF conduit according to another embodiment includes a pair of antenna traces each having first and second end portions and a central portion extending between the first and second end portions, wherein the central portions are positioned relative to each other such that they form a transmission line for RF tunneling therealong between the first ends of the antenna traces and the second ends of the antenna traces and an RF signal received at the first ends is reradiated at the second ends. Additional systems and methods are presented.Type: ApplicationFiled: October 24, 2008Publication date: April 29, 2010Inventor: Edward M. Farrell
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Publication number: 20090267737Abstract: A system in one embodiment includes a plurality of Radio Frequency Identification (RFID) readers, each reader being capable of using a single antenna for both transmit and receive functions, wherein, during operation, one of the readers transmits and at least another of the readers receives a response to the transmission from an RFID device. A system in another embodiment includes a plurality of Radio Frequency Identification (RFID) readers, each reader having at least one antenna mounted on a housing thereof, wherein, during operation, the reader transmitting emits a signal sufficient to communicate with a battery assisted passive RFID device at a range of at least 20 meters. Additional systems and methods are also presented.Type: ApplicationFiled: April 29, 2008Publication date: October 29, 2009Inventors: Dean Kawaguchi, Edward M. Farrell
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Patent number: 4994027Abstract: A method for establishing a percutaneous cannula insertion in which a hypodermic need is inserted into a selected vessel and thereafter a guide wire is threaded through the needle, so that upon the removal of the needle from the guide wire, a dilator sleeve may be moved along the guide wire until the dilator sleeve is inserted into the vessel, and thereafter a sheath is moved along the guide wire and over the dilator sleeve so that upon removal of the dilator sleeve from the guide wire the sheath may be compressed to prevent escape of fluid through the sheath and a cannula may be inserted into the sheath along the guide wire.Type: GrantFiled: October 19, 1989Date of Patent: February 19, 1991Inventor: Edward M. Farrell
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Patent number: 4895564Abstract: A percutaneous dilator system comprising:(i) a first dilator tube having a tapered leading end and inwardly directed shoulder means spaced from the trailing end defining a gripping section between the shoulder and the trailing end;(ii) a bore through the tube dimensioned to receive a guide wire; and(iii) a second dilator tube having a bore corresponding to the outside diameter of the first tube, a tapered leading end, and an inwardly directed flange at the trailing end dimensioned to note with the shoulder means to limit relative axial mating movement of the first and second tubes while exposing the gripping section;whereby a puncture through tissue containing a guide wire of predetermined guage may be enlarged without substantial tissue damage by placing the first tube over the guide wire through the puncture, then sliding the second dilator tube over the wire and first dilator tube until its flange means engages the shoulder means to enlarge the puncture further, the dilator tubes being subsequently removabType: GrantFiled: June 8, 1988Date of Patent: January 23, 1990Inventor: Edward M. Farrell