Patents by Inventor James C. Otto
James C. Otto 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: 7463200Abstract: A wireless communication node, such as a repeater, including a frequency translating repeater, a physical layer (PHY) repeater, time divisional duplex repeater (TDD) and the like, is configured with a pair of directional patch antennae and an omni-directional antenna. The patch antennae can be selected depending on the orientation of the repeater package to communicate with a station such as an access point or a base station. The omni-directional antenna can be directed toward another station such as a client. The patch antennae and the omni-directional antenna can be orthogonally polarized to increase isolation and reduce electromagnetic coupling. Multiple antennae can be used in multiple-input-multiple-output (MIMO) configurations.Type: GrantFiled: November 21, 2006Date of Patent: December 9, 2008Assignee: QUALCOMM IncorporatedInventors: Kenneth M. Gainey, James A. Proctor, Jr., Christopher A. Snyder, James C. Otto
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Publication number: 20080232241Abstract: Methods and systems are provided to generate digital coefficients for a filter. The generation of coefficients relies on a Fourier transformation of an impulse response in time domain that is zero padded, e.g., zeros are appended to an array corresponding to a sampled input signal of length M. A unit prototypical filter is generated through a frequency domain response of length NFFT=NS+M?1, wherein NS is a sampling length of the incoming signal. The unit prototypical filter is then circularly shifted in order to generate a band pass filter centered at a desired frequency. Circularly shifted filters are point-to-point added to generate a set of composite digital coefficients to filter the incoming signal. The reference frequencies for the composite filter are extracted from a message received from one or more base stations associated with one or more service providers. The composite filter typically operates on a frequency repeater.Type: ApplicationFiled: March 3, 2008Publication date: September 25, 2008Applicant: QUALCOMM INCORPORATEDInventors: James A. Proctor, Kenneth M. Gainey, James C. Otto
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Publication number: 20080225930Abstract: A repeater environment is provided operative to deploy a feedback cancellation loop that is adaptively coupled with an antenna array such that a selected metric can be derived by deploying a selected filter bank operative to process the signal on a bin by bin basis and the derived metric can be applied to the antenna array and feedback cancellation loop combination to improve signal integrity and amplification. In an illustrative implementation, an exemplary repeater environment comprises, a transmitter, a receiver, an equalized feedback cancellation loop circuitry comprising a filter bank, the cancellation loop being operatively coupled to an antenna array. In the illustrative implementation, the feedback cancellation loop can receive signals as input from a cooperating antenna array and provide output signals such as a feedback leakage signal to a cooperating antenna array.Type: ApplicationFiled: March 3, 2008Publication date: September 18, 2008Applicant: QUALCOMM IncorporatedInventors: James A. Proctor, Kenneth M. Gainey, James C. Otto
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Publication number: 20080225758Abstract: A repeater environment is provided operative to deploy a feedback cancellation loop that is adaptively coupled with an antenna array such that a selected metric can be derived by deploying a selected filter bank having an automatic gain control operative to process the signal on a bin by bin basis and the derived metric can be applied to the antenna array and feedback cancellation loop combination to improve signal integrity and amplification. In an illustrative implementation, an exemplary repeater environment comprises, a transmitter, a receiver, an equalized feedback cancellation loop circuitry comprising a filter bank, the cancellation loop being operatively coupled to an antenna array. In the illustrative implementation, the feedback cancellation loop can receive signals as input from a cooperating antenna array and provide output signals such as a feedback leakage signal to a cooperating antenna array.Type: ApplicationFiled: March 3, 2008Publication date: September 18, 2008Applicant: QUALCOMM INCORPORATEDInventors: James A. Proctor, Kenneth M. Gainey, James C. Otto
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Publication number: 20080225931Abstract: A repeater environment is provided to deploy a feedback cancellation loop that is adaptively coupled with an antenna array such that a selected metric can be derived by deploying a one or more of selected metrics (e.g., composite metrics) comprising a selected filter bank operative to process the signal on a bin by bin basis and the derived metric can be applied to the antenna array and feedback cancellation loop combination to improve signal integrity and amplification, beam forming operations, and pilot control and overhead channel control operations. In an illustrative implementation, an exemplary repeater environment comprises, a transmitter, a receiver, an equalized feedback cancellation loop circuitry comprising a filter bank, the cancellation loop being operatively coupled to an antenna array.Type: ApplicationFiled: March 3, 2008Publication date: September 18, 2008Applicant: QUALCOMM INCORPORATEDInventors: James A. Proctor, Kenneth M. Gainey, James C. Otto
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Publication number: 20080225775Abstract: Embodiments of a repeater environment can be operative to deploy a feedback cancellation loop that is adaptively coupled with an antenna array such that a selected metric can be applied to the antenna array and feedback cancellation loop combination to improve signal integrity and amplification. Illustratively, the feedback cancellation loop of the exemplary repeater can be adapted by a metric that operatively adapts weights provided by performing a selected linear algebra technique to the feedback cancellation loop such that the metric can be indicative of the level of transmitter signal present at a receive and can be derived based on performing a correlation between the transmitted signal and the receiver signal. Further, operatively, the exemplary repeater can maintain a delay sufficient to preferably ensure that transmitted signal is de-correlated with the desired receiver signal, and time aligned and correlated with the feedback leakage signal.Type: ApplicationFiled: March 3, 2008Publication date: September 18, 2008Applicant: QUALCOMM IncorporatedInventors: James A. Proctor, Kenneth M. Gainey, James C. Otto
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Publication number: 20080225929Abstract: A repeater environment is provided to operatively deploy a feedback cancellation loop that performs closed loop calculations for weights used by a feedback equalizer to improve signal integrity and amplification. In an illustrative implementation, an exemplary repeater environment comprises a transmitter, a receiver, an equalized feedback cancellation loop circuitry operative to perform one or more closed form calculations for equalizer weights. In the illustrative implementation, the feedback cancellation loop can comprise a calculation module operative to perform one or more closed form weight calculations using linear algebraic techniques as part of feedback signal cancel operations for use by the N tap feedback equalizer canceller.Type: ApplicationFiled: March 3, 2008Publication date: September 18, 2008Applicant: QUALCOMM IncorporatedInventors: James A. Proctor, Kenneth M. Gainey, James C. Otto
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Patent number: 7366464Abstract: An access point operates in an 802.11 wireless communication network communicating with a client station, and includes a smart antenna for generating directional antenna beams and an omni-directional antenna beam. An antenna steering algorithm scans the directional antenna beams and the omni-directional antenna beam for receiving signals from the client station. The signals received via each scanned antenna beam are measured, and one of the antenna beams is selected based upon the measuring for communicating with the client station. The selected antenna beam is preferably a directional antenna beam. Once the directional antenna beam has been selected, there are several usage rules for exchanging data with the client station. The usage rules are directed to an active state of the access point, which includes a data transmission mode and a data reception mode.Type: GrantFiled: June 3, 2005Date of Patent: April 29, 2008Assignee: Interdigital Technology CorporationInventors: Ana Lucia Iacono, Arty Chandra, Daniel P. Steinbach, Inhyok Cha, James C. Otto, Kevin P. Johnson, Stanley Gutowski, Kai Liu, Angelo Cuffaro, Janet Stern-Berkowitz
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Patent number: 7230935Abstract: A physical layer frequency translating repeater (600, 700) for use in a wireless network includes signal processor (710-714) coupled with a signal processing bus (711), a processor (627) and a memory (650). The physical layer repeater conducts physical layer repeating and selectively conducts layer 2 and possibly layer 3 functions depending on network conditions and other factors. A demodulator (623) can extract address information such as media access control (MAC) addressing to enable packets to be redirected, terminated, stored and forwarded, if necessary, based on network conditions.Type: GrantFiled: January 26, 2006Date of Patent: June 12, 2007Assignee: WiDeFi, Inc.Inventors: James A. Proctor, Jr., Kenneth M. Gainey, Carlos M. Puig, James C. Otto, Lawrence W. LaMont, Jr.
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Patent number: 7187904Abstract: A frequency translating repeater (120) for use in a time division duplex (TDD) radio protocol communications system includes local oscillator (LO) circuits (210, 310, and 410) to facilitate repeating by providing isolation, reduced phase noise, reduced pulling, and the like. Tunable LOs (441, 442) can be directly coupled to down-converters (413, 414) and up-converters (426, 427) for increased isolation, reduced phase noise, less stringent frequency accuracy, and a reduced potential for pulling.Type: GrantFiled: June 3, 2005Date of Patent: March 6, 2007Assignee: WiDeFi, Inc.Inventors: Kenneth M. Gainey, Kevin J. Negus, James C. Otto, James A. Proctor, Jr.
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Publication number: 20040053634Abstract: A directional antenna is pointed based on a ranking process. The ranking process of choice uses both Es/No and Pilot Power parameters as measured from a pilot signal for best overall system performance in the forward and reverse links. Using this pointing and ranking process enables adaptive pointing of the directional antenna in interference and multi-path driven environments. The pointing and ranking process may be used to select the “best” pointing angle for communicating with a given base station or for selecting the given base station. The process may include fine tuning techniques for use in different environments. The fine tuning may include the use of weights related to the operating environment or directivity of the directional antenna.Type: ApplicationFiled: May 2, 2003Publication date: March 18, 2004Applicant: Tantivy Communications, Inc.Inventors: Kenneth M. Gainey, James C. Otto, Jonathan L. Hughes, Griffin K. Gothard
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Patent number: 6600774Abstract: A system for communicating with plural remote transmitters in which the transmitters send messages without a common synchronization source or polling by a controlling receiver. In one embodiment, the system uses the time position of frequency chirp signals to encode the identity and/or other information sent from the receiver. The system may use relatively low cost transmitters because the transmitters do not need to have a message or clocking signal receiving capability and the internal clocking signal source within the transmitter may be a relatively inexpensive device or circuit.Type: GrantFiled: July 9, 1999Date of Patent: July 29, 2003Assignee: Harris CorporationInventor: James C. Otto
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Patent number: 6549562Abstract: A method and system generates a modulated chirp signal in accordance with the present invention. A phase-locked loop output signal is generated, together with a sampled feedback signal from a voltage controlled oscillator. The sampled feedback signal is received within a quadrature I/Q phase modulator. I/Q quadrature signals are generated from an I/Q generator circuit to the quadrature I/Q phase modulator to produce a desired modulation of a sampled feedback signal as a string of +/−90 degree phase shifts to create a desired offset at the voltage controlled oscillator. The I/Q quadrature signals are chirp modulated and the resultant phase-locked loop output signal is chirp modulated by the chirp signal that comprises a sequence of chirps having a reference chirp followed by a plurality of data chirps.Type: GrantFiled: November 12, 1999Date of Patent: April 15, 2003Assignee: Harris CorporationInventors: David A. Olaker, James C. Otto, James R. Fillion
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Patent number: 5982808Abstract: A system for communicating with plural remote transmitters in which the transmitters send messages without a common synchronization source or polling by a controlling receiver. In one embodiment, the system uses the time position of frequency chirp signals to encode the identity and/or other information sent from the receiver. The system may use relatively low cost transmitters because the transmitters do not need to have a message or clocking signal receiving capability and the internal clocking signal source within the transmitter may be a relatively inexpensive device or circuit.Type: GrantFiled: August 30, 1996Date of Patent: November 9, 1999Assignee: Harris CorporationInventor: James C. Otto
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Patent number: 5870029Abstract: A system and method for monitoring the location and/or presence of an object/person within a desired area includes a mobile base station, a central control center, a mobile signaling device carried by the monitored object/person, and a geolocating means. The mobile base station may be transported to an arbitrary site and retains the monitored object/person within a desired area. The central control center determines the acceptability of the location of the monitored object/person and may raise an alarm condition when the monitored object/person is not within the desired area.Type: GrantFiled: July 8, 1996Date of Patent: February 9, 1999Assignee: Harris CorporationInventors: James C. Otto, Brian P. Holt, Arthur L. Stewart
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Patent number: 5859613Abstract: A system and method for locating plural remote transmitters in which many, relatively inexpensive transmitters may simultaneously send identifying signals to one or more receiving stations. The receiving stations detect the signals from the remote transmitters, determine the time of arrival of the signals and decode the information (if any) contained in the signals, all without synchronization between the receiving stations and the transmitters or among the transmitters and all without a central system for polling the various remote transmitters. The system combines the signal information received from two or more receiving stations to determine the geolocation of the transmitting units.Type: GrantFiled: August 30, 1996Date of Patent: January 12, 1999Assignee: Harris CorporationInventor: James C. Otto
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Patent number: 5719584Abstract: A system and method for determining the geolocation of a transmitter within or without a set of receiving stations. The system includes plural receiving stations which determine the time of arrival and the angle of arrival of a signal from a target unit. The signal determinations are communicated to a central processing unit which determines the geolocation of a radiating unit which would provide such times of arrival and angles of arrival. By use of both time of arrival and angle of arrival information at the central processing unit, the need for receiving stations to cover a desired geographic area is reduced.Type: GrantFiled: September 3, 1996Date of Patent: February 17, 1998Assignee: Harris CorporationInventor: James C. Otto
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Patent number: 5550549Abstract: A system and method for determining the range between a receiver of a radio frequency signal and a transmitter of the signal includes transmission of a ranging signal having a grossly timed trigger followed by a chirp waveform. In response to receipt of the leading edge of the grossly timed trigger, the receiver of the ranging signal generates a first reference chirp at about the same time as the expected time of receipt of the chirp waveform, and thereafter compares the two chirps to provide a time correction signal (it being known that when two identical chirp signals, one time delayed from the other, are mixed, the resulting signal will have a frequency proportional to the amount of delay between the two chirp signals.) The time correction signal is used to correct the timing of an outgoing corrected chirp that is to be used to determine range between the transmitter and receiver based on a time of arrival.Type: GrantFiled: February 28, 1995Date of Patent: August 27, 1996Assignee: Harris CorporationInventors: James A. Procter, Jr., James C. Otto
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Patent number: 4772864Abstract: A multilayer circuit prototyping board for prototyping circuits in a three-layer transmission line structure. The multilayer circuit prototyping board includes grooves and mesas on one side thereof, with wires to be run in the grooves for interconnecting electronic components. The electronic components are mounted on the bottom surface of the prototyping boards with leads protruding through holes in a bottom ground plane into the grooved portions. Wires or solder bridges are located within the grooves for interconnecting the leads of the various electronic components. A removable top ground plane is then placed atop the board base for completing the three-layer structure.Type: GrantFiled: February 9, 1987Date of Patent: September 20, 1988Assignee: Harris CorporationInventors: James C. Otto, Herman A. Jones