Patent application number | Description | Published |
20080232279 | METHOD AND SYSTEM FOR SHARING FILTERS BETWEEN TRANSMIT AND RECEIVE PATHS IN AN INTEGRATED FM RADIO - Aspects of a method and system for sharing filters between transmit and receive paths in an integrated FM radio are provided. In this regard, a FM radio receive processing path and a FM radio transmit processing path may each be configured to share a filter. Accordingly, one or more switching elements may enable coupling/decoupling the filter to/from the FM radio transmit and FM radio receive processing paths. Furthermore, the switching elements may be programmatically controlled by a processor and/or memory. Additionally, by coupling the filter to the transmit receive paths during alternating time intervals, aspects of the invention may enable simulating simultaneous transmission and reception of FM radio signals utilizing while sharing one or more filters. In various embodiments of the invention, separate filters may be utilized for an in-phase processing path and a quadrature phase processing path. | 09-25-2008 |
20080232523 | Method And System For Mixing A Plurality Of Audio Sources In An FM Transmitter - A plurality of digital audio signals from a plurality of sources utilizing different clocks may be processed and transmitted via an FM transmitter. The plurality of signals may have different sample rates which are converted to one same sample rate by a plurality of rate adapters. The plurality of rate adapters may be clocked at one same sample rate. The energy levels of the signals may be adjusted relative to one another and as a group. Energy level adjustments may improve FM modulation signal characteristics and audible energy levels for an end listener. The plurality of digital audio signals may be combined into one composite signal and FM modulated in the digital domain. The FM modulated signal may be converted to analog signal prior to being filtered, amplified and coupled to an antenna for transmission. | 09-25-2008 |
20080233869 | METHOD AND SYSTEM FOR A SINGLE-CHIP FM TUNING SYSTEM FOR TRANSMIT AND RECEIVE ANTENNAS - Aspects of a method and system for a single-chip FM tuning system for transmit and receive antennas may include in a frequency-modulation (FM) radio system comprising an integrated FM radio transmitter and FM radio receiver: receiving via a receive antenna for the FM radio system a radio-frequency (RF) signal transmitted from a transmit antenna of the radio transmitter. A frequency response of said receive antenna and/or a frequency response of said transmit antenna may be adjusted based on said received RF signal. The frequency response of the receive antenna and/or the transmit antenna may be adjusted dynamically, autonomously, sequentially and/or simultaneously. The receive antenna and/or the transmit antenna may be adjusted via a programmable filter, which may comprise inductive and capacitive components. The programmable filter may comprise a programmable array of inductors and/or a programmable array of capacitors. | 09-25-2008 |
20080233876 | METHOD AND SYSTEM FOR SHARING AN AUDIO PROCESSOR IN AN INTEGRATED FM RADIO AND BLUETOOTH SYSTEM - Aspects of a method and system for sharing an audio processor in an integrated FM and Bluetooth system are provided. In this regard, the shared audio processor may be enabled to process Bluetooth audio signals and/or FM audio signals. The shared audio processor may enable A/D conversion, D/A conversion, and/or conversion between digital audio formats. The shared audio processor may process signals from a FM radio receiver, a Bluetooth receiver, a FM radio transmitter, and/or a Bluetooth transmitter. The shared audio processor may process analog and/or digital signals, and may process encoded signals. | 09-25-2008 |
20080233883 | 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 list, and selecting one of the ranked local FM channels for use by the FM transmitter based on neighboring channel interference. The FM radio receiver may detect FM channels being transmitted or not being transmitted, detect a pilot signal or a channel transmission pause. A tuning frequency of the FM radio receiver may be adjusted for scanning and detecting the local FM channels based on knowledge of a location of the FM radio receiver, received signal strength indicator (RSSI), dynamically scanning for local FM channel based on received RDS/RDBS data or country code, and/or carrier error of a related FM signal. | 09-25-2008 |
20080233892 | METHOD AND SYSTEM FOR AN INTEGRATED VCO AND LOCAL OSCILLATOR ARCHITECTURE FOR AN INTEGRATED FM TRANSMITTER AND FM RECEIVER - Aspects of a method and system for an integrated local oscillator generator for an integrated FM radio are provided. In this regard, a FM radio receive path and/or a FM radio transmit path may utilize one or more signals which are a frequency scaled version of a generated signal. In this regard, the frequency scaling may be performed by one or more configurable frequency dividers which may be programmably controlled by a processor. The generated signal may be in the range of about 990 MHz to 1190 MHz such that harmonics of the generated signal do not interfere with coexistent wireless technologies. Additionally the frequency scaled version may be in the frequency range of about 76 MHz to 108 MHz such that FM Radio signals in a FM broadcast band may be transmitted and/or received. The frequency scaled versions of the generated signal may comprise in-phase and quadrature components and may be utilized to up-convert and/or down-convert FM radio signals. | 09-25-2008 |
20080233897 | METHOD AND SYSTEM FOR SIMULTANEOUS FM TRANSMISSION ON A SELECTED CHANNEL AND ITS CORRESPONDING IMAGE FREQUENCY - Aspects of a method and system for simultaneous signal transmission on multiple selected frequencies may include generating from a single baseband signal, a plurality of radio frequency transmission signals each at a different radio frequency, wherein the single baseband signal comprises an in-phase signal component and/or a quadrature signal component. The single baseband signal, to generate said plurality of radio frequency transmission signals, may be modulated in a single radio frequency transmission chain, the radio frequency transmission chain comprising intermediate frequency modulation and radio frequency modulation. The plurality of radio frequency transmission signals may be a radio frequency signal and a corresponding image frequency signal, based on the intermediate frequency modulation and the radio frequency modulation. The signals resulting from the intermediate frequency modulation and the radio frequency modulation may be filtered to preserve the radio frequency signal and the corresponding image frequency signal. | 09-25-2008 |
20080233907 | Method And System For Determining Channel Spacing And Configuring An FM Transmitter - In a wireless communication system which may include a mobile device having an integrated FM radio transmitter and a FM radio receiver, a geographic location of the mobile device may be determined. A FM channel map may be determined based on the location and the FM radio transmitter may be configured for transmitting FM signals based on the FM channel map, which may include a list of ranked FM channels. The geographic location may be acquired from received RDS or RBDS signals, received GPS signals, other received wireless signals, and/or from user data. Channel spacing, channel offset and/or frequency band may be determined for the FM channel map. A frequency for transmitting FM signals via the FM radio transmitter may be selected based on the determined FM channel map. The FM radio receiver may also be configured for receiving FM signals based on the determined FM channel map. | 09-25-2008 |
20080233954 | Method And System For Processing Results Derived From Detecting Channels Suitable For FM Transmission In An Integrated FM Transmit/Receive System - A method and system is provided for enabling communication, where a FM radio system including an integrated FM radio transmitter and FM radio receiver may use an in-band FM or out of band transmitter to communicate a dynamically generated list with alternate local FM channels to an in-band or out of band receiver of another FM radio device with a FM radio receiver. The generated list of local FM channels may be ranked according to the least neighboring channel interference and may be selected for tuning the FM radio device. The FM radio system and the FM radio device may both scan to generate a substantially matched list of local FM channels. In response to detecting a new signal of a transmitted channel by the FM radio system, the FM radio device may tune to the same channel using an open loop, closed loop or semi-open loop method. | 09-25-2008 |
20090022208 | METHOD AND SYSTEM FOR RAPIDLY DETECTING THE PRESENCE OF INTERFERERS IN BLUETOOTH FREQUENCY HOPPING - Methods and systems for wireless communication are disclosed and may include sweeping a signal detection frequency one or more times across a plurality of steps in a frequency range. The measured signal strength at each step may be compared to a threshold, and a status may be stored, which may depend on the presence of a measured signal strength above threshold. The detection frequency may be swept utilizing a voltage controlled oscillator, which may be tuned via a control voltage and/or calibration capacitors. Steps may be skipped when a measured signal strength may be greater than the threshold, and may occur after multiple above threshold measurements. The steps may have variable frequency width, and the range may include the Bluetooth band from 2.40 GHz to 2.48 GHz. The frequency may be swept over a subset of the Bluetooth band, and may be swept on a periodic basis. | 01-22-2009 |
20090124200 | METHOD AND SYSTEM FOR A CONTINUING SCAN IN A BLUETOOTH WIRELESS SYSTEM - Methods and systems for wireless communication are disclosed and may include controlling one or more scans of a received signal detection frequency across a frequency range and storing a magnitude of the received signal at each frequency where the magnitude exceeds a threshold level. A type of one or more signals in the received signal may be determined based on a bandwidth of the signals. A Bluetooth page/inquiry scan may be initiated if the determined type is a page/inquiry signal, and scans may be continued if the determined type may not be a page/inquiry signal. The scans may be repeated on a periodic basis and may be controlled utilizing a voltage controlled oscillator. Each of the scans may include a plurality of discrete frequency steps or a continuous frequency ramp. The controlling may include a start frequency, an end frequency and a frequency step size for the scans. | 05-14-2009 |
20090191828 | METHOD AND SYSTEM FOR FLEXIBLE FM TUNING - A system for processing signals is disclosed and may include a single chip having an integrated Bluetooth radio and an integrated FM radio. The single chip may include at least one processor that enables selecting from a range of FM channels, a particular frequency for one of the FM channels based on an intermediate frequency (IF). The particular frequency may be selected so that it is an integer multiple of a channel spacing between neighboring allocated FM channels within the range of FM channels, and may be offset by at most one-half the channel spacing. The at least one processor may enable determining a frequency error of the selected particular frequency for the one of the FM channels. The at least one processor may also enable determining, whether the particular frequency includes an on-frequency channel based on the determined frequency error. | 07-30-2009 |
20090302966 | METHOD AND SYSTEM FOR OPTIMAL FREQUENCY PLANNING FOR AN INTEGRATED COMMUNICATION SYSTEM WITH MULTIPLE RECEIVERS - Methods and systems for optimal frequency planning for an integrated communication system with multiple receivers may include adjusting a center frequency of a low IF signal to reduce interference by a second order interference signal. The center frequency may be adjusted to avoid high power portions of the second order interference signal. The interference level corresponding to a center frequency may be determined by, for example, a SNR of the low IF signal, or by determining a BER for the low IF signal. The center frequency of the low IF signal may be dynamically adjusted to keep second order interference level at an acceptable level. Adjusting the center frequency of the low IF signal may also comprise keeping the low IF signal from being blocked by a DC component of the second order interference signal. | 12-10-2009 |
20120021706 | METHOD AND SYSTEM FOR SIMULTANEOUS SIGNAL TRANSMISSION ON MULTIPLE SELECTED FREQUENCIES - Aspects of a method and system for simultaneous signal transmission on multiple selected frequencies may include generating from a single baseband signal, a plurality of radio frequency transmission signals each at a different radio frequency, wherein the single baseband signal comprises an in-phase signal component and/or a quadrature signal component. The single baseband signal, to generate said plurality of radio frequency transmission signals, may be modulated in a single radio frequency transmission chain, the radio frequency transmission chain comprising intermediate frequency modulation and radio frequency modulation. The plurality of radio frequency transmission signals may be a radio frequency signal and a corresponding image frequency signal, based on the intermediate frequency modulation and the radio frequency modulation. The signals resulting from the intermediate frequency modulation and the radio frequency modulation may be filtered to preserve the radio frequency signal and the corresponding image frequency signal. | 01-26-2012 |