Using A Chamber (e.g., Room Testing Or Audio Surveillance, Etc.) Patents (Class 455/67.12)
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Publication number: 20110300809Abstract: A system and method for communicating information from a device under test (DUT) to a computer or person outside of a shielded testing chamber. The DUT can be, for example, a cellular device, that is being verified for cellular transmission or regulatory compliance. In addition to the cellular transmissions, the DUT can communicate information outside the shielded testing chamber via additional electromagnetic signals that are not sent via a cable, thereby obviating the need for a cable inside of the shielded testing chamber. The absence of a cable minimizes interference in the chamber because a cable can act as an antenna and interfere with the cellular transmissions being transmitted.Type: ApplicationFiled: June 3, 2010Publication date: December 8, 2011Applicant: RESEARCH IN MOTION LIMITEDInventors: Anatoliy Gordiyenko, Alexei Skarine, Rahi Kalantari
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Publication number: 20110275329Abstract: Embodiments include systems and methods for over-the-air testing of wireless systems. Embodiments comprise separated chambers containing wireless devices. The chambers are connected by propagation path corridors.Type: ApplicationFiled: May 8, 2011Publication date: November 10, 2011Inventor: Michael Foegelle
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Patent number: 8050632Abstract: A remote monitoring device is integrated as part of a cell phone or personal digital assistant. By sharing computing resources of a communications transceiver, the cost of a monitoring device can be significantly reduced, while still permitting sufficient functionality to effectively observe an area of interest, such as a child's sleeping area. An alert is generated and transmitted to an observer using a separate transceiver when activity at the monitored area (i.e., sound or video activity) meets a specified threshold.Type: GrantFiled: October 25, 2010Date of Patent: November 1, 2011Assignee: John Nicholas and Kristin GrossInventor: John Nicholas Gross
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Patent number: 8014743Abstract: This disclosure discloses methods and apparatus for calibrating received signal strength indicators.Type: GrantFiled: April 24, 2011Date of Patent: September 6, 2011Assignee: Beken CorporationInventors: Ronghui Kong, Dawei Guo
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Patent number: 7995968Abstract: The absolute total isotropic sensitivity is determined for a communication device receiver circuit that is within a scattered field chamber (SFC) and is receiving communications from a base station simulator. Movement of a mode stirrer device within the SFC is controlled to sequentially move the mode stirrer device to a plurality of different static positions. The different static positions of the mode stirrer device are configured to differently mix polarizations of incident RF fields in the SFC. At each of a plurality of the different static positions of the mode stirrer device, the transmission power level from the base station simulator is varied through a plurality of different transmission power levels. At each of a plurality of the transmission power levels, a bit error rate and a received signal strength at which the communication device receives the communications from the base station simulator are measured.Type: GrantFiled: February 11, 2009Date of Patent: August 9, 2011Assignee: Sony Ericsson Mobile Communications ABInventor: Omid Sotoudeh
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Patent number: 7965986Abstract: Embodiments include systems and methods for over-the-air testing of wireless systems. Embodiments comprise separated anechoic chambers containing wireless devices. The anechoic chambers are connected by propagation path corridors.Type: GrantFiled: June 7, 2007Date of Patent: June 21, 2011Assignee: ETS-Lindgren, L.P.Inventor: Michael Foegelle
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Patent number: 7961891Abstract: A system and method of testing the audio performance of an acoustic device is provided. To test a device microphone, an audio signal is generated, provided to an external speaker, outputted to the device microphone, and routed to an auxiliary input/output device where it is outputted and analyzed. To test a device speaker, an audio signal is generated, inputted to an auxiliary input/output device, routed to the device speaker, outputted to an external microphone, and outputted to an audio analyzer.Type: GrantFiled: May 8, 2009Date of Patent: June 14, 2011Assignee: Research In Motion LimitedInventors: Boris Dorfman, Barry S. Hazell
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Patent number: 7962100Abstract: This invention relates to a data transmission system for wireless communication of a control device with a field unit via a radio transmission device. The communication between control device and radio transmission device takes place via a field bus protocol. Likewise, the communication of the field unit with the radio transmission device takes place via a field bus protocol. The radio transmission device is capable of transmitting the field bus protocol by a radio protocol.Type: GrantFiled: February 24, 2006Date of Patent: June 14, 2011Assignee: Vega Grieshaber KGInventors: Andreas Isenmann, Fridolin Faist, Ralf Schaetzle
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Patent number: 7957732Abstract: In order to mount a mobile phone in a test device, the current between the battery unit and the phone unit is fed through a switch unit. The switch unit contains at least one switch for interrupting the current, e.g. for resetting the mobile phone after malfunction.Type: GrantFiled: June 13, 2006Date of Patent: June 7, 2011Assignee: Swissqual License AGInventor: Hanspeter Bobst
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Patent number: 7933559Abstract: A system for testing radio frequency (RF) communications of a device capable of such communications is provided. The system includes a chamber for isolating the device from RF interference, an antenna that is suitable for RF communications with the device wherein the antenna is capable of communications over a range of frequencies, the antenna being located within the chamber, and a digital communication link for providing non-RF communications with the device.Type: GrantFiled: November 9, 2007Date of Patent: April 26, 2011Assignee: Psion Teklogix Inc.Inventor: Zivota Zeke Stojcevic
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Patent number: 7925219Abstract: A wireless video surveillance system having automatic self-configuration of the input capture devices and digital input recorder(s), and further including jamming and interference prevention capabilities.Type: GrantFiled: August 31, 2009Date of Patent: April 12, 2011Assignee: Smartvue CorporationInventor: Martin A. Renkis
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Patent number: 7912486Abstract: Methods, systems, and computer program products for surveillance of messaging service messages in a communications network are disclosed. According to one aspect, a system is provided for intercepting a messaging service message in a communications network. The system can include a communication module for receiving and sending messaging service messages from a communications network. Further, the system can include a subscriber surveillance database for maintaining a listing of subscribers that have been placed under surveillance. The system can also include a surveillance function for receiving a messaging service message, extracting a subscriber identifier from the messaging service message, performing a lookup in the surveillance database using the subscriber identifier, and performing a surveillance action in response to locating a matching entry in the database.Type: GrantFiled: August 12, 2005Date of Patent: March 22, 2011Assignee: TekelecInventors: Apirux Bantukul, Peter J. Marsico, Venkataramaiah Ravishankar, Travis Earl Russell
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Patent number: 7880670Abstract: A signal measurement system tests an RF component in an RF test facility, such as an RF anechoic chamber. The system includes a repeater which is connected to an exterior antenna disposed outside the chamber and a transmitting antenna disposed inside the chamber. The repeater receives the RF broadcast signal from the exterior antenna and rebroadcasts it as an RF testing signal inside the chamber. The subject antenna receives the RF testing signal, which is then analyzed with a computer. The repeater may also modify the RF testing signal to produce a wide variety of test situations that mimic those available in a traditional field-test.Type: GrantFiled: June 16, 2008Date of Patent: February 1, 2011Assignee: AGC AutomotiveInventors: Wladimiro Villarroel, Argy Petros
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Publication number: 20100285753Abstract: Embodiments include systems and methods for simulating a multipath environment for testing a device. In one embodiment, a plurality of antennas are placed around a device under test in an anechoic chamber. Each of a plurality of the antennas is connected to a path of a variable path simulator capable of generating multiple paths between the antennas and external wireless communication test equipment. The variable path simulator introduces a delay spread into each path. In this way, a multipath environment is simulated with signals appearing to arrive from different angles and different distances. Each of a plurality of antennas may be adapted to produce substantially plane waves at the device under test.Type: ApplicationFiled: May 4, 2010Publication date: November 11, 2010Inventor: Michael Foegelle
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Patent number: 7822387Abstract: A remote monitoring device is integrated as part of a cell phone or personal digital assistant. By sharing computing resources of a communications transceiver, the cost of a monitoring device can be significantly reduced, while still permitting sufficient functionality to effectively observe an area of interest, such as a child's sleeping area. An alert is generated and transmitted to an observer using a separate transceiver when activity at the monitored area (i.e., sound or video activity) meets a specified threshold.Type: GrantFiled: August 31, 2007Date of Patent: October 26, 2010Inventor: John Nicholas Gross
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Patent number: 7796676Abstract: A signalling system is provided which can be used to update the prices of goods which are electronically displayed on supermarket shelves. The signaling system may include a first signalling device having an input terminal for receiving electrical message data received from a central computer system, a spread spectrum encoder for encoding the received message data and an electroacoustic converter for converting the encoded data into corresponding acoustic signals and for transmitting the acoustic signals from the transmission medium and for converting the received acoustic signals into corresponding electrical signals, a spread spectrum decoder for decoding the received signals and a message regenerator for regenerating the message data transmitted by the first signalling device from the signals output by the decoder.Type: GrantFiled: October 21, 2004Date of Patent: September 14, 2010Assignee: Intrasonics LimitedInventor: Michael John Barclay
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Publication number: 20100216409Abstract: Embodiments include systems and methods for over-the-air testing of wireless systems. Embodiments comprise separated anechoic chambers containing wireless devices. The anechoic chambers are connected by propagation path corridors.Type: ApplicationFiled: March 25, 2010Publication date: August 26, 2010Inventor: Michael Foegelle
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Patent number: 7680463Abstract: A method and an arrangement for testing a radio device without radiation losses are provided. The arrangement comprises a waveguide closed at both its ends and comprising a holder arranged to hold the radio device at least partly inside the waveguide in such a manner that the radiating part of the radio device remaining outside the waveguide is entirely inside the holder. The arrangement also comprises at least one coupling inside the waveguide for transmission and reception of a radio-frequency signal.Type: GrantFiled: December 19, 2003Date of Patent: March 16, 2010Assignee: JOT Automation OyInventors: Taavi Hirvonen, Ari Immonen, Pekka Jakkula
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Patent number: 7676025Abstract: The invention relates to a method of listening in to calls between two or more subscribers of a communications network comprising one or more IP networks as well as to a listening server, a call control server, and an IP router for carrying out the method. When the listening server detects a request to monitor one of the subscribers, it determines at least one call control server assigned to the subscriber. Further, at least one IP router is determined which is responsible for a network access point of the subscriber to the IP network or IP networks. The listening server causes the at least one determined call control server to acquire call data associated with calls in which the subscriber is involved. Further, the at least one determined IP router is caused to acquire contents data associated with calls in which the subscriber is involved.Type: GrantFiled: February 26, 2003Date of Patent: March 9, 2010Assignee: ALCATELInventors: Wolfgang Lautenschlager, Uwe Stahl
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Publication number: 20090275287Abstract: A wireless video surveillance system with jamming and interference prevention capabilities.Type: ApplicationFiled: August 12, 2005Publication date: November 5, 2009Inventor: Martin A. Renkis
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Patent number: 7606165Abstract: A network troubleshooting framework is described. In an implementation, a method includes generating a first estimation of network performance by a simulator based on network settings obtained from a network, estimating the new performance under an alternative setting by providing the alternative setting to the network simulation and observing the simulation output, repeating the procedure for other alternative settings, and suggesting the alternative setting that improves network performance.Type: GrantFiled: June 30, 2004Date of Patent: October 20, 2009Assignee: Microsoft CorporationInventors: Lili Qiu, Paramvir Bahl, Lidong Zhou, Ananth Rajagopala Rao
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Patent number: 7603087Abstract: A wireless video surveillance system with jamming and interference prevention capabilities.Type: GrantFiled: August 12, 2005Date of Patent: October 13, 2009Assignee: Smartvue CorporationInventor: Martin A. Renkis
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Patent number: 7599687Abstract: A test apparatus for conducting a radiated performance test on a wireless device under controlled test conditions, the test apparatus having an anechoic chamber; a test computer; and an interface, the interface adapted to connect the test computer to the wireless device, the test apparatus being adapted to: establish a data connection on the interface between the test computer and the wireless device; initialize and start a timer for a predetermined interval on the wireless device; subject the wireless device to the radiated performance test in the anechoic chamber after the predetermined interval; and analyze test results on the test computer from a test log stored on the wireless device during the radiated performance test, wherein the interface between the test computer and the wireless device is adapted to be removed during the predetermined interval; for conducting a radiated performance test on a wireless device.Type: GrantFiled: March 7, 2008Date of Patent: October 6, 2009Assignee: Research In Motion LimitedInventors: Wen Zhao, Xin Jin, C. Nicolas Bugnariu, Muhammad Khaledul Islam, Fangyi Luo, Jiansheng Chen
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Patent number: 7567614Abstract: A method, circuit and system for altering the power consumption in communication links. A type of noise and an amount of jitter in a signal transmitted across a communication link is measured. Upon determining the contribution of the measured noise to the measured jitter in the signal, the measured noise is classified based on such contribution and the intensity of the measured jitter. The power consumption in a component(s) of the communication link may be adjusted based on the classification of the measured noise. For example, if the measured noise is classified as being a low amount of noise, then the power consumption of the component(s) may be reduced such as by lowering the voltage of the power supply and/or reducing the complexity of the circuitry. By reducing the power consumption when the communication link is not subject to the worst-case condition, a savings in power consumption may be made.Type: GrantFiled: June 10, 2008Date of Patent: July 28, 2009Assignee: International Business Machines CorporationInventors: Juan Antonio Carballo, Hayden Clavie Cranford, Jr., Gareth John Nicholls, Vernon Roberts Norman, Brian Joel Schuh
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Patent number: 7555294Abstract: A test method for determining total isotropic sensitivity (TIS) of a mobile wireless communications device including a radio frequency (RF) receiver and an antenna coupled thereto may include measuring a sensitivity of the RF receiver, and measuring a three-dimensional (3D) gain pattern of the antenna independent of measuring the sensitivity of the RF receiver. The method may further include determining the TIS of the mobile wireless communications device based upon the sensitivity of the RF receiver and the 3D gain pattern of the antenna.Type: GrantFiled: March 1, 2006Date of Patent: June 30, 2009Assignee: Research In Motion LimitedInventors: Yihong Qi, Perry Jarmuszewski, Michael Certain
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Patent number: 7555295Abstract: A test method is described for determining radiated radio frequency (RF) receiver sensitivity may include determining a bit error rate (BER) versus traffic channel (TCH) power level function for an initial channel, determining an estimated TCH power level for a subsequent channel based upon the BER versus TCH power level function and a desired BER, and measuring a BER of a subsequent channel based upon the estimated TCH power level. The method may further include comparing the measured BER to the desired BER and using a difference therebetween along with the BER versus TCH power level function to determine a next estimated TCH power level, and repeating measuring and comparing if the difference is greater than a threshold to thereby determine a TCH power level in the subsequent channel corresponding to the desired BER.Type: GrantFiled: March 1, 2006Date of Patent: June 30, 2009Assignee: Research In Motion LimitedInventors: Yihong Qi, Perry Jarmuszewski, Michael Certain
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Patent number: 7548625Abstract: A system and method of testing the audio performance of an acoustic device is provided. To test a device microphone, an audio signal is generated, provided to an external speaker, outputted to the device microphone, and routed to an auxiliary input/output device where it is outputted and analyzed. To test a device speaker, an audio signal is generated, inputted to an auxiliary input/output device, routed to the device speaker, outputted to an external microphone, and outputted to an audio analyzer.Type: GrantFiled: November 25, 2003Date of Patent: June 16, 2009Assignee: Research In Motion LimitedInventors: Boris Dorfman, Barry S. Hazell
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Patent number: 7539459Abstract: Noise of a noise-producing object may be at least partially cancelled by a system that emits sound at a polarity substantially opposite to a polarity of detected noise and includes a member having elements disposed in the vicinity of a noise-producing object, some of the elements may be configured to emit noise, and some of the elements may be configured to detect noise and where a signal indicative of the detected noise may be received by a controller which sends a signal to cause at least some of the elements to emit sound at a polarity substantially opposite that of the detected noise, and includes an analyzer to determine when detected noise is indicative of one or more conditions of the noise producing object.Type: GrantFiled: April 2, 2004Date of Patent: May 26, 2009Assignee: Edwards Vacuum, Inc.Inventor: Clive Reginald Steer
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Patent number: 7505766Abstract: A test method for determining conducted radio frequency (RF) receiver sensitivity using an RF source coupled to an RF receiver by an RF cable may include determining a bit error rate (BER) versus traffic channel (TCH) power level function for an initial channel, determining an estimated TCH power level for a subsequent channel based upon the function and the desired BER, and measuring a BER of the subsequent channel based upon the estimated TCH power level. The measured BER may be compared to the desired BER, and a difference therebetween is used along with the function to determine a next estimated TCH power level. Measuring and comparing may be repeated if the difference may be greater than a threshold to thereby determine a TCH power level in the subsequent channel corresponding to the desired BER.Type: GrantFiled: March 1, 2006Date of Patent: March 17, 2009Assignee: Research in Motion LimitedInventors: Yihong Qi, Perry Jarmuszewski, Michael Certain
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Patent number: 7489905Abstract: A test method is for determining RF path loss between an RF source and an RF receiver. The RF source may transmit RF power values at a relatively fine granularity, and the RF receiver may generate RSSI values at a relatively coarse granularity and have an unknown hysteresis about each transition between adjacent RSSI values. Hysteresis edges may be determined about a given RSSI value transition at the RF receiver by sweeping RF power values transmitted from the RF source in increasing and decreasing directions. A relationship between the relatively fine granularity RF power values and the relative coarse granularity RSSI values may be determined using the hysteresis transition edges. The RF path loss for a given channel may be determined based upon a given RSSI at a given RF power value and the relationship between the relatively fine granularity RF power values and the relative coarse granularity RSSI values.Type: GrantFiled: March 1, 2006Date of Patent: February 10, 2009Assignee: Research In Motion LimitedInventors: Yihong Qi, Perry Jarmuszewski, Michael Certain
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Publication number: 20080214117Abstract: A test apparatus for conducting a radiated performance test on a wireless device under controlled test conditions, the test apparatus having an anechoic chamber; a test computer; and an interface, the interface adapted to connect the test computer to the wireless device, the test apparatus being adapted to: establish a data connection on the interface between the test computer and the wireless device; initialize and start a timer for a predetermined interval on the wireless device; subject the wireless device to the radiated performance test in the anechoic chamber after the predetermined interval; and analyze test results on the test computer from a test log stored on the wireless device during the radiated performance test, wherein the interface between the test computer and the wireless device is adapted to be removed during the predetermined interval; for conducting a radiated performance test on a wireless deviceType: ApplicationFiled: March 7, 2008Publication date: September 4, 2008Applicant: RESEARCH IN MOTION LIMITEDInventors: Wen ZHAO, Xin JIN, C. Nicolas BUGNARIU, Muhammad Khaledul ISLAM, Fangyi LUO, Jiansheng CHEN
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Patent number: 7412256Abstract: A carrier sensor senses the input/output level of a radio processing unit. When the input/output level sensed by the carrier sensor is more than a specified level, a transmission-reception controller stops internal radio communication by stopping the operation of transmission/reception units. When the input/output level sensed by the carrier sensor is less than a specified level, the transmission-reception controller allows internal radio communication by operating the transmission/reception units.Type: GrantFiled: June 29, 2005Date of Patent: August 12, 2008Assignee: Seiko Epson CorporationInventor: Hiromitsu Mizukami
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Patent number: 7403771Abstract: Embodiments of telecommunications equipment with a memory device are presented herein.Type: GrantFiled: October 7, 2005Date of Patent: July 22, 2008Assignee: Telect Inc.Inventor: Brian Allen
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Patent number: 7359701Abstract: A method for conducting a radiated performance test on a wireless device comprising the steps of: establishing an interface from a test computer to the wireless device; establishing a data connection on the interface between the test computer and the wireless device; initializing and starting a timer for a predetermined interval on the wireless device; starting a test script on the wireless device; removing the interface during the predetermined interval; running the radiated performance test after the predetermined interval; storing a log of the radiated performance test on the wireless device; and analysing test results based on the log.Type: GrantFiled: September 16, 2003Date of Patent: April 15, 2008Assignee: Research In Motion LimitedInventors: Wen Zhao, Xin Jin, C. Nicolas Bugnariu, M. Khaledul Islam, Fangyi Luo, Jiansheng Chen
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Patent number: 7327984Abstract: Disclosed is a device (200) and a method for measuring a receive sensitivity of a communication system having a transmit and receive path and a receive-only path, like a base station (100) employing space diversity by means of one transmit and receive antenna (111) and an additional receive antenna (121). A terminal (220) is connected to the transmit and receive path and to the receive-only path by means of a first (112) and a second coupler (122) and a first (213a) and a second transmitter (215a) whereby the input signals are combined by a combiner (211) to a single signal fed to the terminal (220).Type: GrantFiled: March 12, 2004Date of Patent: February 5, 2008Assignee: KTFREETEL Co., Ltd.Inventors: Young-Min Oh, Ki-Taek Jang, Hyung-Sik Cho, Hyung-Sup Shin
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Patent number: 7251456Abstract: Allowing a wireless network application to execute, as during development and testing, as if connected to a wireless network using wireless modems without requiring physical access to or presence of a wireless network or devices for accessing the same, by simulating a wireless modem or device. The simulation of commands for a type of wireless communication device with a predefined attention command set may entail receiving, at a wireless communication device simulator, attention commands of the attention command set. For received attention commands, responses may be automatically determined or selected in response to receiving the command without using a wireless communication device to determine the appropriate response. And, the determined attention command responses may be provided from the wireless communication device simulator.Type: GrantFiled: July 7, 2004Date of Patent: July 31, 2007Assignee: Agilent Technologies, Inc.Inventor: Sammy Peter Chiu
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Patent number: 7236795Abstract: A wireless telecommunications network node is provided. The node includes a processor configured to handle call traffic and to record measurement data. The processor is also configured to detect processor load and to automatically adjust the rate of recordal of measurements dependent on detected processor load. The adjustments are so as to keep the processor load within predetermined limits.Type: GrantFiled: February 26, 2004Date of Patent: June 26, 2007Assignee: Lucent Technologies Inc.Inventor: Issac Samuel
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Patent number: 7228105Abstract: A measurement arrangement for accurate and repeatable measurement of transmission and reception characteristics of a communication device. The arrangement comprises an at least partly conductive box forming a substantially enclosed cavity, and arranged in the box a reference antenna, at least one conducting mode mixer and/or at least one mode mixer with absorbing material.Type: GrantFiled: April 29, 2002Date of Patent: June 5, 2007Assignee: Integra Antennas LimitedInventors: Corbett Rowell, Anton Schmid
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Patent number: 7203616Abstract: A method and system for the interactive testing of assembled wireless communication devices is provided. The method comprises: assembling the wireless communication devices to include at least one interactive test component for interactively testing the wireless communication device in one or more interactive tests requiring physical actuation or mechanical dynamics to be performed on the at least one interactive test component; and testing the wireless communication devices comprising performing an interactive test using the at least one interactive test component at an interactive test stage of the production line.Type: GrantFiled: June 29, 2006Date of Patent: April 10, 2007Assignee: Research in Motion LimitedInventor: Winston Mok
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Patent number: 7162285Abstract: A detector for detecting telephone-activated devices, such as cellular telephones used for remotely triggering explosive devices, includes a transmitter for generating and transmitting a pseudo base station signal corresponding to a base station for a telephone-activated device, and a receiver for receiving and detecting a response signal transmitted by the telephone-activated device. At least part of the transmitter and at least of the receiver may be located within a shield of conductive material, such as a cone-shaped metal shield, that aids in localizing and directing the transmitting of the pseudo base station signal toward an object to be interrogated (with regard to whether or not it contains a telephone-activated device in an idle state). The detector has a response unit for providing a response when a telephone-activated device is detected, such as providing an alarm to an operator or interdicting operation of the telephone-activated device.Type: GrantFiled: September 19, 2003Date of Patent: January 9, 2007Assignee: Raytheon CompanyInventors: William R. Owens, Jon N. Leonard, S. Eric Mattingly
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Patent number: 7109932Abstract: The present invention provides, an antenna test device to test antenna efficiency. The test device includes a cavity formed by at least one conductive sidewall. The cavity contains at least one tuning probe, at least one movable portion, or a combination thereof. The tuning probes and/or movable portion help inhibit the antenna under test from having faulty measurements due to anti resonance or coupling.Type: GrantFiled: June 18, 2004Date of Patent: September 19, 2006Assignee: Centurion Wireless Technologies, Inc.Inventors: Govind R. Kadambi, Ram M. Narayanan, Yeqin Huang, Gordon Evert, James Blake Winter
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Patent number: 7109931Abstract: The present invention provides a method to measure antenna efficiency using the cavity method. In particular, the present invention provides a tunable cavity that can be tuned to avoid the anti resonance and antenna-cavity coupling problems. In particular, tuning probes and/or variable volumetric sizing of the cavity are used to tune the cavity to avoid the anti resonance and antenna-cavity coupling.Type: GrantFiled: June 18, 2004Date of Patent: September 19, 2006Assignee: Centurion Wireless Technologies, Inc.Inventors: Govind R. Kadambi, Ram M. Narayanan, Yeqin Huang, Gordon Evert, James Blake Winter
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Patent number: 7107020Abstract: A mobile phone positioning apparatus provides a rotational movement and switching functionality among three planes (H, E1 and E2) as requested by a radiation test. The positioning apparatus includes a base, a support shaft, a platform and a testing plane switch apparatus. The testing plane switch apparatus is mounted on the platform. An inverse U frame is fixed on the platform. A testing frame, pivotally connected to the inverse U frame, is rotated by two pneumatic cylinders so as to switch between the H plane and either the E1 or E2 plane by 90 degrees. A testing plate, pivotally connected to the testing frame, is rotated by another pneumatic cylinder so as to switch between the E1 and E2 planes by 90 degrees.Type: GrantFiled: September 24, 2004Date of Patent: September 12, 2006Assignee: Arima Communications Corp.Inventor: Chin-Wei Chang
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Patent number: 7043286Abstract: A method for selectively shunting an acoustic driver within an electronic device detects the presence of a squelch signal from a local emitter and automatically shunts the acoustic driver in response to the detection, free of any communication back to the emitter. The squelch signal originates from an emitter which is positioned extrinsic to the device, and can be broadcast so as to define a zone of influence within which the acoustic drivers of electronic devices will be squelched. In lieu of an acoustic driver, a vibrator can be activated to quietly alert the user of the incoming message while the squelch signal is present. As a result, the invention enables a proprietor to a greater degree of control over ringing and beeping noises generated by such devices when positioned within a designated space. A broadcast system for defining the zone of influence and electronic devices that include circuitry that implement the method are also disclosed.Type: GrantFiled: June 13, 2001Date of Patent: May 9, 2006Assignee: Leason Holding Company, LLC.Inventor: David Leason
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Patent number: 7035594Abstract: A testing chamber is configured to evaluate the accuracy of a wireless communication device under test in a production environment. The configuration of the testing chamber may resemble an enclosed structure having a wall that includes multiple layers. An array of antennas, which serves as a layer of the wall, is strategically positioned within the testing chamber to receive and transmit signals emitted to/from the wireless communication device. Located within the testing chamber is either a stationary or moveable holder to support the wireless communication device. Furthermore, during testing, the forward link and the reverse communication links are monitored by selectively or alternatively adjusting and shifting the phase/amplitude of the antenna of the wireless communication device to mitigate the effects of multi-path fading.Type: GrantFiled: July 2, 2001Date of Patent: April 25, 2006Assignee: Qualcomm Inc.Inventors: Raymond C. Wallace, Jeffrey Bartlett, John K. M. Lee
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Patent number: 6970700Abstract: A method and apparatus for measuring the characteristics of radio frequency energy in an industrial radio frequency processing system at a plurality of frequencies is disclosed. The method and apparatus measures the characteristics of radio energy using one detector.Type: GrantFiled: January 31, 2000Date of Patent: November 29, 2005Assignee: ENI Technology, Inc.Inventors: Anthony R. A. Keane, Daniel F. Vona, Jr.
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Patent number: 6950665Abstract: A method (and system) for quantifying a three-dimensional model of interference in a cellular wireless communication network. The model is derived from the acquisition and analysis of composite signals as part of a survey of ground-level locations and above-ground-level locations within the intended coverage zone of the cellular wireless communication network. Reliable identification and correlation of signal components are derived by analysis of the acquired composite signals that uses time-of-arrival of a known part of a signal (e.g., the FCCH burst used in GSM for frequency correction).Type: GrantFiled: November 17, 2003Date of Patent: September 27, 2005Assignee: PCTel, Inc.Inventors: Lawrence W. Swift, Sergey Dickey
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Patent number: 6950670Abstract: A wireless network includes transmission power and data rate adaptation based upon signal quality experienced by the user.Type: GrantFiled: October 31, 2001Date of Patent: September 27, 2005Assignee: AT&T Corp.Inventors: Li Fung Chang, Kapil K. Chawla, Justin Che-I Chuang, Xiaoxin Qiu
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Patent number: 6839544Abstract: There is disclosed a signal monitoring apparatus for use in a wireless network base station containing a modular main unit for processing baseband signals and a modular radio unit separate from the main unit for transmitting and receiving radio frequency (RF) signals. The signal monitoring apparatus is disposed in the radio unit and monitors an RF output signal transmitted by a transceiver in the radio unit. The signal monitoring apparatus comprises an RF mixer that mixes the RF output signal and receiver local oscillator (LO) signal used by the receiver portion of the transceiver to demodulate received RF signals. The RF mixer generates an intermediate frequency (IF) signal capable of being transmitted through a communication line at relatively low signal loss to a signal measuring device located in the main unit or elsewhere.Type: GrantFiled: October 18, 1999Date of Patent: January 4, 2005Assignee: Samsung Electronics Co., Ltd.Inventor: Mitchell K. Johnson
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Patent number: 6839546Abstract: A process transmitter is configured to measure a process variable of an industrial process. A housing has a first cavity which houses first transmitter electronic circuitry and provides a barrier between the first transmitter electronic circuitry and second transmitter electronic circuitry. A non-physical electromagnetic link between the first transmitter electronic circuitry and the second transmitter electronic circuitry configured to carry data therebetween.Type: GrantFiled: April 22, 2002Date of Patent: January 4, 2005Assignee: Rosemount Inc.Inventor: Robert C. Hedtke