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| Number | Title | Issue Date |
| 8090318 | Digital data processing circuit A digital data processing circuit includes: an output unit configured to output to an audio signal processing circuit change data for changing a receiving frequency of a FM receiving device as a first frequency to a second frequency in response to an instruction sig... | 01/03/2012 |
| 8081927 | Digital data processing circuit A digital data processing circuit comprising: a setting unit configured to set setting data on an audio signal processing circuit configured to generate an FM modulated signal based on the setting data, the FM modulated signal being a signal to be transmitted wirele... | 12/20/2011 |
| 8078108 | Protocol-controlled antenna selection The idea on which the present invention is based is that transmitting and receiving data by an antenna or an antenna array may be performed more efficiently by analyzing protocol data of a transmit protocol, which control the data flow between a transmitting and a r... | 12/13/2011 |
| 8027641 | Method and system for detecting channels suitable for FM transmission in an integrated FM transmit/receive system A method and system is provided processing channel information may include in a mobile FM radio system including an integrated FM radio transmitter and FM radio receiver, dynamically generating a list of local FM channels, ranking local FM channels in the generated ... | 09/27/2011 |
| 7983617 | Method and system for transmitting multiple channels on FM bands Aspects of a method and system for transmitting multiple channels on FM bands may include generating from one or more baseband signals, a plurality of radio frequency transmission signals each at a different radio frequency, wherein the one or more baseband signals ... | 07/19/2011 |
| 7974580 | Apparatus and method for modulating an amplitude, phase or both of a periodic signal on a per cycle basis An apparatus for wireless communications is disclosed including a signal generator adapted to generate a substantially periodic signal including a plurality of cycles, and a modulator adapted to modulate an amplitude, a phase or both the amplitude and the phase of t... | 07/05/2011 |
| 7970354 | Frequency agile duplex filter Systems and methods are disclosed for an electronically adjustable signal filter system, which comprises, in some embodiments, a first filter coupled to an antenna coupling network and a second filter, a power amplifier coupled to the first filter, an antenna connec... | 06/28/2011 |
| 7881669 | Time reference point information transmitting system and receiver A transmitter sets a time length, determines a time point at which phases of frequency signals coincide within a range of the time length, defines a determined time point as a time reference point, aligns the phases of the frequency signals based on the time referen... | 02/01/2011 |
| 7853212 | Multi-mode modulator A multi-mode modulator includes a first data path to process in-phase signals in a quadrature modulation mode, a second data path to process quadrature signals during the quadrature modulation mode, and a first multiplexer to selectively switch polar amplitude data ... | 12/14/2010 |
| 7817962 | Polar transmitter amplifier with variable output power Various embodiments are disclosed relating to wireless systems, and also relating to transmitter amplifiers, such as, for example, polar transmitter amplifiers with variable output power. According to an example embodiment, a circuit is provided including a pluralit... | 10/19/2010 |
| 7672642 | Uplink communication in GSM/EDGE system Embodiments of the invention relate to uplink communication in a GSM/EDGE telecommunication system. A method according to certain embodiments of the invention include at least one wide-band carrier wave in the group of carrier waves being generated in a mobile stati... | 03/02/2010 |
| 7668509 | Frequency selective leveling loop for multi-signal phased array transmitters A frequency selective leveling loop that performs phase and amplitude control of multiple signals within a phased array structure is disclosed. The leveling loop sensor components are embedded into the array structure. The frequency selective leveling loop can be us... | 02/23/2010 |
| 7570919 | Transmitter, receiver, and radio communications system and method Transmitter and receiver for wireless communications with improved accuracy and stability in radio frequency control. A transmitter mixes an information-carrying signal (first signal) and a non-modulated wave signal (second signal) with a carrier signal, thereby pro... | 08/04/2009 |
| 7463862 | Methods and apparatus to integrate image rejection into quadrature mixers Methods and apparatus to integrate image rejection into quadrature mixers are disclosed. A disclosed image-rejection quadrature mixer comprises a quadrature mixer, and a cross-coupled differential pair of transistors to provide a complex filter response, wherein the... | 12/09/2008 |
| 7398056 | Channel estimation applique for multiple antenna wireless communications Multiple antenna wireless communication systems require accurate knowledge of the transfer function between all paths. This invention discloses a system wherein a test signal generator at a transmitter station and a facsimile generator at a receiver station go throu... | 07/08/2008 |
| 7392018 | Channel estimation applique for wireless communications A test signal generator at a transmitter station and a facsimile generator at a receiver station go through an acquisition and tracking process which aligns the two signals, removing errors in the time base of generation, the frequency offset of generation and the t... | 06/24/2008 |
| 7376173 | Unambiguously encoding and decoding signals for wireless channels A method encodes a sequence of blocks of input bits to be transmitted over a wireless channel. Each block of input bits is converted to a codeword, and each codeword is mapped to multiple sub-blocks of complex numbers. Each sub-block is multiplied by a disambiguatin... | 05/20/2008 |
| 7366485 | Multimode wireless transmitter and a portable wireless device using the same The circuits of a multimode wireless transmitter are complex and large, and thus difficult to incorporate in a portable wireless device. This problem is solved for a multimode wireless transmitter by enabling the first frequency mode circuit and the second frequency... | 04/29/2008 |
| 7359671 | Multiple channel wireless communication system A wireless audio distribution system may have a wireless transmitter, responsive to a plurality of audio input channels, for transmitting signals carrying the audio, a receiver, responsive to the transmitted signals for selecting one or more of the audio input chann... | 04/15/2008 |
| 7356343 | Emergency location transceivers (ELT) Emergency Location Transceivers (ELT) and communication transceivers (transmitters and receivers) for reception and demodulation of location finder signals, Global Positioning System (GPS) satellite signals and non GPS satellite location finder and other location fi... | 04/08/2008 |
| 7343015 | Method and apparatus for high fidelity wireless stereophonic transmission utilizing dual frequency carriers A method and system is disclosed for transmitting two related channels of signals through the air. A first channel of signals is modulated with a first carrier frequency, and a second channel of signals is modulated with a second carrier frequency. The modulated fir... | 03/11/2008 |
| 7338328 | Cigarette lighter adapter device that interfaces with an external device via a port interface A CLA device comprises a CLA plug that is insertable into an external CLA socket, for example, a DC CLA socket inside a vehicle. The CLA device has a housing coupled to the CLA plug, for example, by integration or via a tethered wire, with the housing having a suppo... | 03/04/2008 |
| 7330451 | Code division multiple access communication system and method Disclosed is a CDMA communication system and method that make it possible to accommodate a greater number of user terminals that can be connected per facilities investment. Ternary phase-shift keying (TPSK) modulation is applied as primary modulation in a CDMA commu... | 02/12/2008 |
| 7327777 | Method and apparatus for distributed polyphase spread spectrum communications Methods and apparatus are provided for distributed polyphase spread spectrum communication and non-contiguous spectrum underlay. The method includes polyphase channelizing a direct sequence spread spectrum (DSSS) signal, determining available spectrum in an observed... | 02/05/2008 |
| 7324798 | 2-order sub-harmonic frequency modulator having high carrier suppression ratio and direct conversion transmitter using the same Disclosed herein is a 2N-order sub-harmonic frequency modulator and direct conversion transmitter using the same. The direct conversion transmitter includes a digital modulation unit, a D/A conversion unit, a DC correction and low pass filter unit, a loca... | 01/29/2008 |
| 7324833 | System and method for connecting a portable audio player to an automobile sound system An audio system and method are disclosed. A system incorporating teachings of the present disclosure may include, for example, an electronic device having a display, a memory, an audio file player, and a housing component at least partially defining a cavity in whic... | 01/29/2008 |
| 7321578 | Multiprotocol WLAN access point devices The embodiment of the present invention comprises a device-internal data flow organization coupled with a wireless communications medium access control protocol for a set of WLAN “Multiprotocol Devices”, each containing a 2.4 and 5 GHz frequency band-agile CCK a... | 01/22/2008 |
| 7315729 | Wireless transmitter for use in a vehicle A connecting device comprises a first power plug for connecting to a power output port of a vehicle, a second power plug for connecting to a power input port on an electronic device, at least one signal plug for connecting to at least one signal output port of the e... | 01/01/2008 |
| 7308104 | Forward multiple scrambling code generating method and apparatus Disclosed are a forward multiple scrambling code generating method and apparatus in a communication system. Each base station uses primary scrambling codes and an associated one of secondary scrambling code sets, each consisting of a plurality of secondary scramblin... | 12/11/2007 |
| 7305257 | Portable alerter for wireless device The present invention is a remove-able portable alerter for a portable wireless communication host device. The alerter provides a method to receive un-obtrusive alerts from the host device informing the user of incoming notifications. Users are informed of alerts wi... | 12/04/2007 |
| 7295809 | Portable audio playback device with bass enhancement Wirelessly linking a portable audio device to an external audio system permits the external audio system to generate audible signals that enhance local playback of audio by the portable device. For example, the portable device wirelessly transmits lower frequency co... | 11/13/2007 |
| 7293276 | Interactive television program guide for recording enhanced video content Interactive television systems and methods are provided for enhancing program guide content using recording and alert features for video related to promotions, advertisements, and other selectable displays presented in an interactive television application such as a... | 11/06/2007 |
| 7280802 | FM transmitter and power supply/charging assembly for MP3 player An FM transmitter and power supply/charging assembly electrically coupleable with an MP3 player. The assembly includes a modular docking unit having a main body portion with a docking cavity therein, wherein the main body portion contains the FM transmitter and powe... | 10/09/2007 |
| 7272358 | Channelization scheme for wireless local area networks A four channel wireless network channelization scheme is described that is particularly usable in the ISM frequency band between 2400 MHz and 2483.5 MHz. The preferred channelization scheme permits access points to be set at one of four frequencies in the ISM band, ... | 09/18/2007 |
| 7263713 | Television signal distributor apparatus, receiver apparatus, television signal transmission system and method In a television signal transmission system, CS broadcasting signals received via a master antenna are converted into intermediate frequency signals in an LNB (Low Noise Block Down Converter). The CS intermediate frequency signals then undergo conversion of the modul... | 08/28/2007 |
| 7260361 | Locating interfering devices in wireless networks using channel adaptation metrics A method, apparatus and system relate to detecting an interfering device in a wireless network such as a wireless local area network (WLAN). In wireless networks using orthogonal frequency division multiplexing (OFDM) and adaptive bit loading (ABL), adaptive modulat... | 08/21/2007 |
| 7257050 | Through tubing real time downhole wireless gauge A telemetry system having: a pipe; a SCADA box acoustically coupled to the pipe; and a gauge inserted in the pipe, the gauge comprising: an acoustic wave generator; a coupler mechanically connected to the acoustic wave generator, wherein the coupler is engageable an... | 08/14/2007 |
| 7251459 | Dual frequency band wireless LAN A dual band radio is constructed using a primary and secondary transceiver. The primary transceiver is a complete radio that is operational in a stand alone configuration. The secondary transceiver is a not a complete radio and is configured to re-use components suc... | 07/31/2007 |
| 7242906 | FM transmitter and power supply/charging assembly for MP3 player An FM transmitter and power supply/charging assembly electrically coupleable with an MP3 player. The assembly includes a modular docking unit having a main body portion with a docking cavity therein, wherein the main body portion contains the FM transmitter and powe... | 07/10/2007 |
| 7239846 | Up-conversion modulation loop for multi-mode mobile communication The present invention relates to a signal modulation loop for the multi-mode mobile communication. The adaptive up-conversion modulation loop is applied in the multi-mode mobile communication, and is used for signal integration for the communication system comprisin... | 07/03/2007 |
