With Electrical Protection Of Transmitter Circuit Or Operator Patents (Class 455/117)
  • Patent number: 10305519
    Abstract: A power supply apparatus for a power amplifier includes a converter configured to convert input power into driving power for the power amplifier, a detector configured to transfer the driving power from the converter to the power amplifier, including an inductor formed on a detection path of the driving power, and configured to detect power information regarding the driving power to generate a detected signal, and a controller configured to control power conversion of the converter based on an envelope signal of a signal input to the power amplifier and the detected signal.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: May 28, 2019
    Assignees: Samsung Electro-Mechanics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Hui Dong Gwon, Gyu Hyeong Cho, Jeong Hoon Kim
  • Patent number: 10298876
    Abstract: An information processing system, a control method and a non-transitory storage medium through which reproduction that matches characteristics of devices of a playback side can be performed by generating abstracted presence reproduction information are provided. The information processing system includes: a generation unit that generates abstracted presence reproduction information depending on features extracted from content data; and a storage controller that controls the presence reproduction information generated by the generation unit to be stored in association with the content data.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: May 21, 2019
    Assignee: SONY CORPORATION
    Inventor: Yasushi Miyajima
  • Patent number: 10038465
    Abstract: An electronic device includes a communication unit; a memory storing instructions; and a processor, coupled to the communication unit and memory, to execute instructions to determine, based on at least one of a state of the electronic device and a distance between the electronic device and a user, a value of specific absorption rate (SAR) corresponding to the value of SAR that corresponds to a power of the electronic device; determine, based on the SAR, an average SAR on a designated time interval; determine, in response to the average SAR being greater than a first designated value, a reference value limiting a maximum power of the electronic device; and transmit a signal based on the determined reference value through the communication unit, wherein the reference value includes a value obtained by subtracting a second designated value from a value of maximum output power of the electronic device.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: July 31, 2018
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Yong-Jun Park, Namjun Cho
  • Patent number: 10033231
    Abstract: A retrofittable wireless power receiver is disclosed for providing inductive power reception functionality to at least one host device. The retrofittable wireless power receiver comprises a support platform, a secondary inductor operable to couple inductively with a primary inductor associated with a wireless power transmitter; a power reception circuit operable to control inductive power transfer from the primary inductor to the host device, a synchrorectifier, and a near field communication antenna. The retrofittable wireless power receiver further comprises an array of electrical contacts that comprises a VOUT and GND pair of terminals wired to the sychrorectifier, a DISABLE terminal wired to the power reception circuit and configured to disable power transfer, and a pair of data contacts wired to the near field communication antenna.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: July 24, 2018
    Assignee: POWERMAT TECHNOLOGIES LTD.
    Inventors: Yoel Raab, Moshe Raines, Charle Hamisha, Itai Sherman, Rotem Shraga, Arye Nudelman, Ilan Braha, Charlie Ozana
  • Patent number: 9797999
    Abstract: A display apparatus with a radio frequency (RF) sensor and a user detection method using an RF sensor are provided. The display apparatus includes: a display panel configured to display an image; a support frame located in a back area of the display panel and configured to support parts of the display apparatus; and a radio frequency (RF) sensor configured to be arranged in the support frame for performing one of transmitting a radio frequency signal to a front area of the display panel and receiving the radio signal from the front area of the display panel, wherein the radio frequency signal which is transmitted or received passes through the display panel.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: October 24, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-han Lee, Kun-sok Kang, Byung-seok Soh, Chang-won Son, Sang-on Choi
  • Patent number: 9749725
    Abstract: In a wireless microphone having an antenna in a lower part of a main body, a wireless microphone in which a microphone main body serves as a ground plane, which secures stable antenna ground by being gripped by a user, and which is capable of obtaining good RF performance is provided. The microphone main body includes a holder member made of metal for holding at least an antenna circuit part, a cylindrical cover member made of metal for covering a periphery of the holder member, and a cylindrical grip end member made of metal, inserted into a rear end side of the cover member, and connected with a rear part side of the holder member. The holder member has conduction with the cover member via the grip end member.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: August 29, 2017
    Assignee: KABUSHIKI KAISHA AUDIO-TECHNICA
    Inventors: Yoshihiko Naito, Akira Masuda
  • Patent number: 9596065
    Abstract: Enhanced sounding reference signal (SRS) transmissions for multiple input, multiple output (MIMO) operation are disclosed in which a user equipment (UE) detects an observed interference level for each receiver chain of the UE. In response to an imbalance, the UE precodes a SRS targeting downlink operation to indicate the imbalance. The UE then transmits the precoded SRS. In alternative aspects, the precoded SRS vector may be determined by an evolved nodeB (eNB). In such aspects, the eNB determines the precoded SRS vector targeting downlink operations for the served UEs, wherein the determined precoded SRS vector includes determining the precoded SRS vector on a per UE basis, enabling the precoded SRS vector for either one or both of frequency division duplex (FDD) systems and time division duplex (TDD) systems, or enabling the precoded SRS vector for aperiodic SRS only. The eNB then transmits the determined precoded SRS vector to the UE.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: March 14, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Peter Gaal, Hao Xu, Yongbin Wei, Stefan Geirhofer
  • Patent number: 9442147
    Abstract: A method and device are for calibrating an antenna. At least one switch is spanning sections of a radiating antenna element. A controller is designed to selectively close the switch to be conductive, thus effectively short-circuiting the actual section of the antenna element. The method includes: installing the antenna for field use at least for transmission or reception of signals; then measuring the reflected power from the antenna at least for a number of frequencies or frequency ranges at more than one setting of the switch; and storing the settings that gives a desirable result of reflected power at an actual frequency or frequency range.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: September 13, 2016
    Assignee: Comrod AS
    Inventor: Jo Morten Eide
  • Patent number: 9144028
    Abstract: A method, mobile station, and user-based communication system are provided that determine that a mobile station intends to transmit over an uplink, determine whether the mobile station is being operated in a body-worn position, determine an uplink transmit power scale factor, and when the mobile station is being operated in a body-worn position, apply the uplink transmit power scale factor to an uplink transmit power to produce a scaled uplink transmit power. In one embodiment, the user-based communication system includes the mobile station and an audio accessory and determines whether the mobile station is being operated in a body-worn position based on a determination of whether the audio accessory is actively engaged.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: September 22, 2015
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Antonio Faraone, Giorgi G. Bit-Babik
  • Patent number: 9002297
    Abstract: A mobile device includes an antenna, an ESD (Electrostatic Discharge) protection component, a plurality of branches, and a switch. The antenna is configured to transmit and receive an RF (Radio Frequency) signal. The branches provide different inductances or different capacitances, and are respectively coupled to a ground voltage terminal. The switch is coupled through the ESD protection component to the antenna, and switches between the branches according to a control signal such that the antenna is capable of operating in a plurality of frequency intervals. The ESD protection component is configured to protect the switch from being damaged.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: April 7, 2015
    Assignee: HTC Corporation
    Inventors: Ju-Hung Chen, Chien-Pin Chiu, Chang-Yen Cheng, Chi-Hsien Chiu
  • Patent number: 8989792
    Abstract: A user device obtains motion data from an inertial sensor included in the user device. The user device receives a command to transmit information at a specified transmit power level. The user device determines, based on the motion data, whether the presence of a human body part is detected. When the presence of a human body part is detected, the user device reduces a current transmit power level below the specified transmit power level.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: March 24, 2015
    Assignee: Amazon Technologies, Inc.
    Inventor: John Depew
  • Patent number: 8934937
    Abstract: A user device transmits data at a first transmit power level. The user device detects a presence of a human body part within a predetermined distance from an antenna of the user device using one or more sensors disposed at a back side of the user device. In response to the detection of the presence of the human body part, the user device transmits information at a second transmit power level that is less than the first transmit power level.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: January 13, 2015
    Assignee: Amazon Technologies, Inc.
    Inventors: Gregg Zehr, Subram Narasimhan, Varadarajan Gopalakrishnan, David C. Buuck, John Depew, In Chul Hyun
  • Patent number: 8811918
    Abstract: Various embodiments of the present invention recognize at least two zones of operation for a communication device. In a first zone, which is sufficiently spaced away from a human head or body that SAR limits will be met, transmit power delivered to an antenna of a communication device may be maximized within any other constraints under which the communication device operates. In a second zone, which is not sufficiently spaced away from a human head or body, transmit power is redistributed such that SAR limitations are met without affecting the transmit power control loop of the communication device. For example, a second antenna physically disposed at a different location within the communication device may be used either instead of, or in addition to, the first transmit antenna in order that the SAR limits are met.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: August 19, 2014
    Assignee: Broadcom Corporation
    Inventors: Kamlesh Rath, Erik Stauffer, Rishi Ranjan, Soumen Chakraborty, Manish Airy, Bertrand Hochwald, Robert Lorenz, Richard Compton, Rakesh Agrawal
  • Patent number: 8805455
    Abstract: An intrinsic safety approach is provided for a battery powered communication device. Sparking is prevented at radio contacts during attachment and removal of a battery (104, 204, 304, 404) from a radio (102, 202, 302, 402) through the use of switches (112, 212, 312, 412/424) to isolate the radio capacitors from the radio contacts and/or dissipate energy from the radio capacitor through a discharge resistor (214, 314, 414).
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: August 12, 2014
    Assignee: Motorola Solutions, Inc.
    Inventors: William C. Bohne, John W. Oglesbee
  • Patent number: 8798685
    Abstract: Methods, systems, apparatus, and computer programs encoded on computer storage medium, for receiving a set of expected activities, each expected activity in the set of expected activities including an activity that is expected to be performed by a computing device, determining one or more time periods based on the set of expected activities, determining one or more expected rates of change of state of charge (SOC) of a battery of the mobile computing device by, for each time period of the one or more time periods, determining an expected rate of change of SOC based on a base rate of change of SOC and one or more expected activities associated with the time period, and determining an estimated remaining time based on the one or more expected rates of change of SOC, the remaining time corresponding to a time at which an expected SOC is less than a threshold SOC.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: August 5, 2014
    Assignee: Google Inc.
    Inventors: Zoltan Stekkelpak, Gyula Simonyi
  • Patent number: 8792930
    Abstract: A user device receives a command to transmit information at a transmit power level specified by a wireless carrier. The user device makes a determination as to whether transmitting the information at the specified transmit power level will cause the user device to violate a condition. When it is determined that transmitting the information at the specified transmit power level will cause the user device to violate the condition, the user device dynamically computes a new transmit power level that is lower than the specified transmit power level. The user device then transmits the information at the new transmit power level.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: July 29, 2014
    Assignee: Amazon Technologies, Inc.
    Inventors: Varadarajan Gopalakrishnan, James Samuel Bowen, In Chul Hyun, David Woo
  • Patent number: 8787848
    Abstract: An adapter for coupling to a process control transmitter of the type used to monitor a process variable in an industrial process includes a first connection configured to couple to a first side of a two wire process control loop, a second connection configured to couple to a second side of the two wire process control loop and in series with a first connection to a process control transmitter, and a third connection configured to couple to a second connection of the process control transmitter. Wireless communication circuitry is coupled to at least the third connection and is configured to provide wireless communication for the process control transmitter. Intrinsic safety circuitry coupled to at least one of the first, second and third connections is configured to limit transfer of electrical energy to a value which is less than an intrinsic safety value.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: July 22, 2014
    Assignee: Rosemount Inc.
    Inventors: John A. Kielb, Brian L. Westfield, Kelly M. Orth
  • Patent number: 8688108
    Abstract: The invention relates to a mobile telecommunication device (100) for establishing a telecommunication connection in the radio frequency range with a base station (102; 104; 1100), the mobile telecommunication device comprising; at least a first (106) and a second antenna (108), an electromagnetic shield (110) located between the first and the second antenna, a logic component (1000), wherein the first and the second antenna are adapted to transmit and receive telecommunication signals of the same frequency band, and wherein the logic component selects whether the first or the second antenna is used for the telecommunication connection with the base station.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: April 1, 2014
    Assignee: Alcatel Lucent
    Inventors: Stephen Kaminski, Bozo Cesar, Uwe Doetsch
  • Patent number: 8644777
    Abstract: A system for power amplifier over-voltage protection includes a power amplifier configured to receive a system voltage, a bias circuit configured to provide a bias signal to the power amplifier, and a power amplifier over-voltage circuit configured to interrupt the bias signal when the system voltage exceeds a predetermined value, while the system voltage remains coupled to the power amplifier.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: February 4, 2014
    Assignee: Skyworks Solutions, Inc.
    Inventors: David S. Ripley, Joel A. Penticoff
  • Patent number: 8644778
    Abstract: A method is disclosed including, using a measurement antenna in a wireless device, determining whether a user is proximate the wireless device at least by transmitting a signal using the measurement antenna; in response to a determination the user is not proximate the wireless device, transmitting the signal using a main antenna at a normal transmit power; and in response to a determination the user is proximate the wireless device, transmitting the signal using the main antenna at a limited transmit power. Another method includes in response to a determination a user is not proximate a wireless device, transmitting a signal using a first set of main antennas; and in response to a determination the user is proximate the wireless device, transmitting the signal using the second set of main antennas. Apparatus and program products are also disclosed.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: February 4, 2014
    Assignee: Nokia Corporation
    Inventor: Marko J. Leukkunen
  • Patent number: 8630596
    Abstract: A system may include a modifiable mobile device having at least two antennas coupled to fractional amplifiers, with returned power detectors. A beamformer unit provides adaptive beam shaping pattern, and a baseband processor provides beam pattern requirements, wherein the beamformer unit modifies the beam pattern requirements with return loss sampling information to shape the adaptive beam pattern so that a transmitted beam pattern minimizes transmitted power reflected back to the mobile device. A method may include regularly measuring a return power level, if output power is greater than a specific absorption rate level, comparing the return power level to a first threshold, else implementing mobile transmit diversity (MTD), and repeating. If the return power level is greater than the first threshold, implementing a MTD combined with reflection-based beamforming that modifies beam pattern requirements of the mobile device with return loss sampling information to create an adaptive beam pattern.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: January 14, 2014
    Assignee: Google Inc.
    Inventors: Haim Harel, Kenneth Kludt, Phil F. Chen
  • Patent number: 8620235
    Abstract: A data module operable in a wireless communication system is provided. The data module comprises a plurality of circuit components, one or more temperature sensors, and a thermal management unit. The temperature sensors are configured to determine the temperature of a corresponding circuit component. The thermal management unit is configured to determine one or more thermal characteristics of the data module based on the temperature determinations, and to generate one or more power control point signals indicating whether to adjust corresponding operating characteristics of a target component based on the determined thermal characteristics.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: December 31, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Christopher C. Riddle, Jon James Anderson, Alex K. Tu, Siva Sandeep Dhandu
  • Patent number: 8611845
    Abstract: This invention describes a method by which the output power of a circuit or system at any point can be efficiently and cost effectively sampled in a simple and broadband fashion for processing in a closed loop system for applications such as power level control in very broadband circuits. A divider circuit consisting of a selection of passive lumped elements is used to create a very broadband means of sampling the RF power level at any point in a transmission line. Unlike prior art schemes of this nature, this circuit does not rely upon extremely accurate element values and minimization of parasitic reactances. Used in conjunction with a balanced detector-logarithmic or other amplifier combination this invention result in a very broadband low cost simplified realization of the traditional costly bandwidth limited directional coupler-detector combination.
    Type: Grant
    Filed: February 11, 2012
    Date of Patent: December 17, 2013
    Inventor: Anand Ganesh Basawapatna
  • Patent number: 8583043
    Abstract: A high-frequency device includes a wireless IC chip and a board which is coupled to the wireless IC chip and electrically connected to radiator plates, and an inductor and/or a capacitance are provided as a static electricity countermeasure element in the board. The inductor is connected in parallel between the wireless IC chip and the radiator plates, and its impedance at the frequency of static electricity is less than an impedance of the wireless IC chip.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: November 12, 2013
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Noboru Kato, Nobuo Ikemoto, Yuya Dokai, Koji Shiroki
  • Patent number: 8559897
    Abstract: An information processing apparatus has radio communication function. A tilt detection unit detects a tilt of the information processing apparatus. An output changing unit changes an output of radio waves from an antenna for radio communication. Based on a detection result through the tilt detection unit, when a tilt ? of a predetermined external surface of a chassis of the information processing apparatus to a horizontal surface H is a predetermined angle or less, an output controller reduces an output of radio waves from the antenna to a predetermined value or less with respect to the output changing unit.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: October 15, 2013
    Assignee: Fujitsu Limited
    Inventors: Yasuhiko Isobe, Michihiro Konishi
  • Patent number: 8515499
    Abstract: Methods, systems, apparatus, and computer programs encoded on computer storage medium, for receiving a set of expected activities, each expected activity in the set of expected activities including an activity that is expected to be performed by a computing device, determining one or more time periods based on the set of expected activities, determining one or more expected rates of change of state of charge (SOC) of a battery of the mobile computing device by, for each time period of the one or more time periods, determining an expected rate of change of SOC based on a base rate of change of SOC and one or more expected activities associated with the time period, and determining an estimated remaining time based on the one or more expected rates of change of SOC, the remaining time corresponding to a time at which an expected SOC is less than a threshold SOC.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: August 20, 2013
    Assignee: Google Inc.
    Inventors: Zoltan Stekkelpak, Gyula Simonyi
  • Patent number: 8487705
    Abstract: Embodiments of circuits, apparatuses, and systems for a protection circuit to protect against overdrive or overvoltage conditions. Other embodiments may be described and claimed.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: July 16, 2013
    Assignee: TriQuint Semiconductor, Inc.
    Inventors: Jingshi Yao, Peter Hu, Xiaopeng Sun, Barry Jia-Fu Lin, Mehra Mokalla
  • Patent number: 8483632
    Abstract: Embodiments include systems and methods for controlling radiation of radio frequency (RF) energy by a wireless communication device that includes a transmitter, an antenna, a vector field sensor, and a processing system. The transmitter produces an analog RF signal, and the antenna radiates the analog RF signal into an environment. The vector field sensor senses an intensity of a vector field resulting from the analog RF signal radiated by at least the antenna (and possibly other portions of the device). The processing system determines whether a value representing the intensity is greater than a first threshold, and when the value is greater than the first threshold, the processing system causes the radiated RF energy produced by the wireless communication device to be decreased.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: July 9, 2013
    Assignee: Motorola Mobility LLC
    Inventors: Vijay Asrani, Matthew Biggerstaff, Greg Black, Arthur Christopher Leyh, Pete Nanni, Adrian Napoles, Ben White
  • Patent number: 8483656
    Abstract: Communication is provided which includes receiving a transmitted radio signal at a powerline wherein the powerline functions as a receiving antenna for the wirelessly transmitted radio signal. The powerline is coupled to an input of a radio receiver using a coupler to communicate the radio signal to the radio receiver. For calibration purposes a second antenna not coupled to powerline may be used. A method for powerline communication across transformers, open circuit breakers, and other devices is also provided. In addition, a method of monitoring a device connected to a powerline is provided.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: July 9, 2013
    Assignee: Northern Microdesign, Inc.
    Inventor: William C. Black
  • Patent number: 8479258
    Abstract: A garage management and monitoring system defines and manages each operational event in a parking facility. Access events, management events, equipment operation events, equipment malfunction events, security events and defined anomaly events are labeled and parsed into a relational database, which is used for generating reports, creating logs, making management decisions, reconstructing accidents, and so on. The equipment includes a computer terminal, a reader, an identifying item or code capable of being read by the reader to control access to the facility, an IP camera, and a garage door or vehicle gate with safety sensors. Each defined event can be codified on the server and/or local controller to create an event library that is downloaded to the controller.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: July 2, 2013
    Inventors: Martin Herman Weik, III, Charles E. Wainwright
  • Patent number: 8457620
    Abstract: One illustrative technique for use in a mobile device having a visual display includes monitoring an operating temperature at the device and, when the monitored operating temperature is greater than a first threshold temperature, allowing only emergency communication and providing a visual indication indicating that only emergency communication is allowed.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: June 4, 2013
    Assignee: Research In Motion Limited
    Inventors: Xin Jin, Muhammad Khaledul Islam
  • Patent number: 8442457
    Abstract: A system may include a modifiable mobile device having at least two antennas coupled to fractional amplifiers, with returned power detectors. A beamformer unit provides adaptive beam shaping pattern, and a baseband processor provides beam pattern requirements, wherein the beamformer unit modifies the beam pattern requirements with return loss sampling information to shape the adaptive beam pattern so that a transmitted beam pattern minimizes transmitted power reflected back to the mobile device. A method may include regularly measuring a return power level, if output power is greater than a specific absorption rate level, comparing the return power level to a first threshold, else implementing mobile transmit diversity (MTD), and repeating. If the return power level is greater than the first threshold, implementing a MTD combined with reflection-based beamforming that modifies beam pattern requirements of the mobile device with return loss sampling information to create an adaptive beam pattern.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: May 14, 2013
    Assignee: Google Inc.
    Inventors: Haim Harel, Phil F. Chen, Kenneth Kludt
  • Patent number: 8391811
    Abstract: Embodiments of circuits, apparatuses, and systems for a protection circuit having a control element with an attenuation state to protect against overload conditions. Other embodiments may be described and claimed.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: March 5, 2013
    Assignee: Triquint Semiconductor, Inc.
    Inventor: John Bellantoni
  • Patent number: 8384399
    Abstract: A system including a first electrode, a second electrode, a first circuit and a second circuit. The second electrode is capacitively coupled to the first electrode. The first circuit is configured to receive data via a network and transmit a signal via the first electrode based on the data. The second circuit is configured to receive data via the network and receive a current that corresponds to the signal via the second electrode based on the data.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: February 26, 2013
    Assignee: Infineon Technologies AG
    Inventors: Dirk Hammerschmidt, Thomas Klug
  • Patent number: 8385984
    Abstract: A method and apparatus to supply a power voltage to a mobile device in a variable manner in order to provide high output power and a high quality sound environment and a mobile device using the same. The apparatus includes a volume control unit to detect installation of an external power supply and to generate a voltage control value corresponding to a current volume level, and a DC-DC converter unit to convert a voltage of an internal power supply in a variable manner on the basis of the voltage control value generated in the volume control unit in order to drive the switching power amplifier.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: February 26, 2013
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Jae-cheol Lee, Hae-kwang Park
  • Patent number: 8385854
    Abstract: A device including a gain control element coupled prior to or within a radio frequency (RF) power amplifier (PA) with an adaptive parametric PA protection circuit is described. In an exemplary embodiment, the device includes a gain control element coupled prior to a radio frequency power amplifier with a power stage with corresponding transistor breakdown threshold values, having an adaptive parametric PA protection circuit configured to receive at least one power stage drain-source voltage parameter value, at least one power stage drain-gate voltage parameter value, and at least one power stage drain-source current parameter value, and including an adaptive parametric PA protection circuit having a first section for processing the parameter values and a second section for generating a gain correction signal to adjust the gain control element with optimal power added efficiency (PAE) for the power stage within the corresponding transistor breakdown threshold values.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: February 26, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Aristotele Hadjichristos, Gurkanwal S. Sahota
  • Patent number: 8374657
    Abstract: An apparatus having a loop device fastened to a communication unit that permits a user to securely hold the unit using one or more fingers inserted through a loop device for efficient and stable operation of a keyboard, touch screen, trackball or the like using the user's thumb.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: February 12, 2013
    Assignee: Rich Interdonato
    Inventor: Rich Interdonato
  • Patent number: 8224399
    Abstract: A method and apparatus to supply a power voltage to a mobile device in a variable manner in order to provide high output power and a high quality sound environment and a mobile device using the same. The apparatus includes a volume control unit to detect installation of an external power supply and to generate a voltage control value corresponding to a current volume level, and a DC-DC converter unit to convert a voltage of an internal power supply in a variable manner on the basis of the voltage control value generated in the volume control unit in order to drive the switching power amplifier.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: July 17, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-cheol Lee, Hae-kwang Park
  • Patent number: 8200291
    Abstract: A safety device for automotive vehicles (cars, buses and trucks) or rail locomotives. The device inhibits use of cellular telephones and other communication devices that run the risk of distracting a driver/operator while the vehicle is in motion. Several techniques for inhibiting use are described which can be used individually or in a complementary combinations. In one technique, a rapidly varying signal level is created local to the communication device. The variations exceed the operational limits of the system, thereby inhibiting communications. In another technique, the safety device emits radiation that interferes with the reception of signals by the communication device only within the interior of the vehicle and will not interfere with cell phones or wireless devises outside the automotive vehicle or rail locomotive.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: June 12, 2012
    Inventors: Allan Steinmetz, Douglas Magyari, Stuart Lipoff
  • Patent number: 8180305
    Abstract: There is provided a communication apparatus including a reference electrode; a signal electrode which electrostatically couples to a communication medium; a measurement unit for measuring an impedance of a circuit system including between the reference electrode and the signal electrode; and a transmission processing unit for creating a potential difference between the signal electrode and the reference electrode based on a transmission power corresponding to the impedance of the circuit system measured by the measurement unit, and transmitting a signal to another communication apparatus electrostatically coupled to the communication medium.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: May 15, 2012
    Assignee: Sony Corporation
    Inventors: Fumio Kubono, Yoshihito Ishibashi, Shoji Nagai, Yuko Yoshida, Naoki Ide
  • Patent number: 8165540
    Abstract: In accordance with various exemplary embodiments of the present invention, systems, methods and devices are configured to facilitate RF envelope amplitude control. For example, a RF envelope amplitude control system comprises: a RF amplifier, wherein the RF amplifier is associated with a feedback device that is configured to create a first feedback signal representing the power in an RF output signal; a transmit waveform generator configured to generate a reference waveform signal; an adaptive table waveform generator configured to compare the reference waveform signal and the first feedback signal and to create a second feedback signal based on that comparison; and a loop filter configured to combine the reference waveform signal, the first feedback signal, and the second feedback signal to form an amplifier control signal, wherein the amplifier control signal is provided to the RF amplifier to adjust the RF output signal to conform to a specified RF envelope.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: April 24, 2012
    Assignee: ViaSat, Inc.
    Inventor: David R. Lang
  • Patent number: 8160654
    Abstract: A power reception device utilizing non-contact power transmission causes a PMOS transistor as a switch circuit to be turned ON when a secondary battery is in a heavy-load state to form a path which bypasses a series regulator (LDO) as a power supply circuit, and supplies a charging current to the secondary battery through the bypass path. An offset may be provided between ON/OFF control threshold values of the PMOS transistor. The series regulator (LDO) may be entirely or partially set in a non-operating state when forming the bypass path.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: April 17, 2012
    Assignees: Seiko Epson Corporation, Sony Ericsson Mobile Communications Japan, Inc.
    Inventors: Kota Onishi, Kentaro Yoda, Takahiro Kamijo, Haruhiko Sogabe, Kuniharu Suzuki, Hiroshi Kato, Katsuya Suzuki, Manabu Yamazaki
  • Patent number: 8145158
    Abstract: A wireless communication unit comprises a transmitter having a power amplifier biased by a bias circuit and a controller operably coupled to the bias circuit for setting one or more bias levels of the power amplifier. The bias circuit is a single bias circuit and is configured to provide either a current mode bias control of the power amplifier or a voltage mode bias control of the power amplifier in response to a control signal from the controller. In this manner, a single bias control circuit can be used to support applications that benefit from both current mode bias control and voltage mode bias control of the power amplifier.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: March 27, 2012
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Didier Salle, Arnaud Girardot, Gerald Haennig, Pierre Savary
  • Patent number: 8116714
    Abstract: Communication is provided which includes receiving a transmitted radio signal at a powerline wherein the powerline functions as a receiving antenna for the wirelessly transmitted radio signal. The powerline is coupled to an input of a radio receiver using a coupler to communicate the radio signal to the radio receiver. For calibration purposes a second antenna not coupled to powerline may be used. A method for powerline communication across transformers, open circuit breakers, and other devices is also provided. In addition, a method of monitoring a device connected to a powerline is provided.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: February 14, 2012
    Assignee: Northern Microdesign, Inc.
    Inventor: William C. Black
  • Patent number: 8099065
    Abstract: Communication with less noise is to be performed. A voltage value control signal functioning as an instruction to change the voltage value supplied from a voltage converting section to an LFI is output from a CPU. A driving section for the LFI outputs the control signal at 125 kHz that drives an FET circuit section according to the voltage value supplied from an ECU. The FET circuit section outputs the driving current for an antenna under the control of the driving section. A connecter terminal that connects to a harness is connected to a connecter terminal for GND connection along with the GND terminal of the voltage converting section. A connecter terminal that connects to a harness is connected to a connecter terminal for GND connection along with the GND terminal of the FET circuit section.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: January 17, 2012
    Assignee: OMRON Corporation
    Inventor: Masaki Fujii
  • Patent number: 8090423
    Abstract: A mobile terminal comprises a front case and a rear case which are fastened with a printed circuit board (PCB) and an antenna connected with the PCB interposed therebetween; a battery protection cover opening and closing a battery receiving space provided on the rear case; and a conductive coupling element formed on one of the rear case and the battery protection cover such that the conductive coupling element is overlapped with at least one of one edge and the other edge of the antenna.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: January 3, 2012
    Assignee: LG Electronics Inc.
    Inventors: Young Soo NA, Chang Il Kim
  • Patent number: 7890066
    Abstract: The radio frequency integrated circuit (RFIC) electrostatic discharge (ESD) circuit includes an integrated circuit pad and a radio frequency (RF) ESD circuit. The integrated circuit pad provides coupling to an antenna. The RF ESD circuit is coupled to the integrated circuit pad, wherein the RF ESD circuit provides ESD protection at the integrated circuit pad, provides coupling of inbound RF signals from the antenna to low noise amplifier, and provides coupling of outbound RF signals from a power amplifier to the antenna.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: February 15, 2011
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza Rofougaran
  • Patent number: 7822394
    Abstract: An electrostatic-discharge/impedance-matching circuit for use in radio frequency (RF) integrated circuits. The electrostatic-discharge/impedance-matching circuit comprises at least one shunt circuit operable to shunt current related to an over-voltage condition and at least one series element operably coupled to the shunt element. The shunt element and series element in combination provide electrostatic discharge protection for the RF signal processing circuit elements on the integrated circuit and also provide a matched input impedance for an incoming RF signal. Various alternate embodiments of the electrostatic-discharge/impedance-matching circuit include first and second shunt elements and a series element operably connected in combination to provide optimal electrostatic discharge protection and impedance matching.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: October 26, 2010
    Assignee: Broadcom Corporation
    Inventor: John C. Leete
  • Patent number: 7610027
    Abstract: A system and method for medium access control (MAC) protocol which controls transmissions in wireless devices to at least substantially comply with specific absorption rate (SAR) limits. The system and method of MAC protocol uses “source-based” time averaging measurements of transmitter “on-times” and an integral of transmission power to direct transmitter duty-cycle such that SAR limits are met. The system and method monitors and controls topology-dependent functions of a node transceiver, including transceiver duty cycle, transceiver transmit power levels and transceiver power-time products, using a automatic transmission control protocol (ATP) to vary functions to maintain specific absorption rate (SAR) limits for handheld and portable devices which are used close to human bodies. In cases in which SAR limits are approached, the ATP can direct the transceiver at the device to adjust each function, or combination of functions, to maintain an acceptable SAR limit.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: October 27, 2009
    Assignee: MeshNetworks, Inc.
    Inventor: Pertti Alapuranen
  • Publication number: 20090253388
    Abstract: An adapter for coupling to a process control transmitter of the type used to monitor a process variable in an industrial process includes a first connection configured to couple to a first side of a two wire process control loop, a second connection configured to couple to a second side of the two wire process control loop and in series with a first connection to a process control transmitter, and a third connection configured to couple to a second connection of the process control transmitter. Wireless communication circuitry is coupled to at least the third connection and is configured to provide wireless communication for the process control transmitter. Intrinsic safety circuitry coupled to at least one of the first, second and third connections is configured to limit transfer of electrical energy to a value which is less than an intrinsic safety value.
    Type: Application
    Filed: June 17, 2009
    Publication date: October 8, 2009
    Inventors: John A. Kielb, Brian L. Westfield, Kelly M. Orth