| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 455185100 |
With channel information storage
| 37 |
| 455182100 |
With frequency control
| 11 |
| 455180100 |
Combined with band selection
| 10 |
| 455183100 |
With frequency synthesizer | 3 |
| 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 |
| 20100233979 | Wide Bandwidth Fast Hopping Frequency Synthesizer Circuits and Methods - Embodiments of the present invention include methods for wide bandwidth synthesizer circuits and methods. In one embodiment, the present invention includes a frequency synthesizer comprising a multiplexer and a band group selector. The multiplexer is coupled to receive a plurality of sinusoidal signals. Each sinusoidal signal has a unique frequency. The band group selector selects between a plurality of band groups. The band group selector is coupled to receive a first signal from the multiplexer. The multiplexer multiplexes between the plurality of sinusoidal signals and provides the first signal. The band group selector includes a band mixer. The band mixer mixes the first signal with a band signal having a band frequency. The band signal corresponds to a band group selected from the plurality of band groups. The band group selector provides a transmitter mixer signal and a receiver mixer signal. | 09-16-2010 |
| 20140323071 | Interference Adaptive Wideband Receiver - The invention discloses a wideband receiver and a base station in a communication network. The wideband receiver comprises an Intermediate Frequency (IF) frequency control module, a frequency synthesizer, a mixer and an analog-to-digital converter (ADC). The IF frequency control module comprises an interference detector adapted to detect interference condition on at least one frequency band, and an IF frequency selector adapted to select an IF frequency based on the detected interference condition from the interference detector. The IF frequency is selected to avoid high interference mixed product of the mixer occurring in used channel. The frequency synthesizer generates an oscillator signal of the selected IF frequency, the mixer down converts a RF signal to an IF signal using the oscillator signal of the selected IF frequency, and the ADC converts the IF signal to baseband data. | 10-30-2014 |
| 455181100 |
Time controlled | 2 |
| 20100317305 | Receiver For A Radio Network And An Method For Determining A Channel Estimate For A Radio Channel - The present invention relates to a receiver for a radio network. The receiver com-prises a receiving unit and a channel estimation unit ( | 12-16-2010 |
| 20130244601 | RADIO FREQUENCY (RF) RECEIVER WITH DYNAMIC FREQUENCY PLANNING AND METHOD THEREFOR - A radio frequency (RF) receiver comprises an analog receiver, a digital signal processor, a clock synthesizer, and a microcontroller. The analog receiver has an input for receiving an RF input signal, and an output for providing a digital intermediate frequency (IF) signal. The digital signal processor has a first input for receiving the digital IF signal, a second input for receiving a clock signal, and a signal output for providing an IF output signal. The clock synthesizer has an input for receiving a clock control signal, and an output for providing the clock signal. The a microcontroller has an input for receiving a channel selection signal, wherein the microcontroller provides the clock control signal to control a frequency of the clock signal dynamically in response to a channel selection input to place a sub-harmonic at a tolerable frequency of a selected channel. | 09-19-2013 |
| 455182300 |
Fine tuning | 2 |
| 20090111408 | METHOD AND APPARATUS FOR PROVIDING A DUAL-LOOP PHASE LOCK LOOP - A method and apparatus for providing a dual-loop phase lock loop (PLL) for a radio-frequency (RF) receiver is provided. The dual-loop PLL may include coarse tuning circuitry and fine tuning circuitry. The coarse turning circuitry and fine tuning circuitry may be arranged in parallel. Both of the coarse tuning circuitry and fine tuning circuitry provide respective tuning signals to a voltage-controlled oscillator (e.g., a varactor tuned VCO). The coarse tuning circuitry and the fine tuning circuitry may provide the respective tuning signals simultaneously. In addition, coarse and fine tuning circuitry may be formed monolithically with other elements of the dual-loop PLL so as to provide a highly-integratable having a wide frequency lock range and high sensitivity. | 04-30-2009 |
| 20090247101 | Auto-detection of broadcast channel spacing - Methods and systems are disclosed for automatic detection of channel spacing for broadcast bands in different regions that use different channel spacing. Using the described embodiments, channel spacing at a users' current location can be automatically detected so that manual settings by the user are not necessary, especially when a user travels with his/her radio across regions that use different channel spacing for radio broadcasting bands. This auto-detected channel spacing can then be used for later channel searching by the radio. More particularly, methods and systems are disclosed for auto-detection of channel spacing for AM broadcasts using different channel spacings, such as the standard 9 kHz and 10 kHz spacings, used today in different geographic regions of the world for AM broadcast bands. | 10-01-2009 |
| 455187100 |
Separate tuned circuits for each channel or station | 1 |
| 20080242247 | RESOLVING POTENTIAL CONFLICTS IN INTEROPERABILITY COMMUNICATIONS - A communication device and computerized method to address conflicts in Virtual Talk Groups is provided. The method may comprise accessing a database to monitor resources in a plurality of Virtual Talk Groups (VTG) to detect if there is at least a potential conflict of the resources. When the potential conflict is detected, the method comprises identifying at least one resource which is contributing to the potential conflict, and initiating automatically an electronic communication to identify the potential conflict. In response to the electronic communication, a new VTG may be initiated and terminals of administrators associated with the conflicting resource may be assigned to the new VTG. Each administrator may administer an associated VTG. | 10-02-2008 |
| 455184100 |
With comparing desired and existing tuning conditions | 1 |
| 20110189968 | AUDIO COMPARISON METHOD AND APPARATUS - An audio comparison method and apparatus compares audio streams by measuring the times of volume peaks in the audio streams and identifying correlations between the peaks in the audio streams, subject to possible delay between the streams. The audio comparison allows the identification of audio streams including the same audio content even in the presence of delay and distortion and using low processing power. The audio comparison has particular application in car radios to allow automatic retuning. | 08-04-2011 |
| Entries |
| Document | Title | Date |
|---|
| 20080268802 | RADIO RECEIVER THAT CHANGES FUNCTION ACCORDING TO THE OUTPUT OF AN INTERNAL VOICE-ONLY DETECTOR - A radio receiver includes a voice-only detection mechanism that detects when the current radio station is transmitting mostly voice, and that changes the function of the receiver depending on whether or not the current radio station is transmitting mostly voice. In a first embodiment, the radio receiver mutes its audio output when the voice-only detection mechanism detects a voice broadcast, or mutes its audio output when the voice-only detection mechanism detects a music broadcast. In a second embodiment, the radio receiver changes to a different radio station when a voice-only signal is detected, or when a music signal is detected. The second embodiment preferably includes a spectrum analyzer that can store a frequency spectrum “signature” of a radio signal, and a second tuner that scans the available radio stations for a signal that matches the stored signature. | 10-30-2008 |
| 20080287082 | Method and apparatus to improve network acquisition - The present invention provides architectures and methods which use multiple radio receive chains in mobile devices to provide enhanced performance, such as when acquiring and maintaining network access. A plurality of receive chains simultaneously perform signal level measurements across one or more measurement cycles. The number of RF channels upon which measurements are performed may be determined adaptively/dynamically. One or more criterion may be used to set signal level thresholds. If a measured signal for a given channel fails to satisfy a threshold, then that RF channel may be removed from the network acquisition process. If a measured signal for a channel exceeds another threshold, then that channel may be employed in further network acquisition processes, such as identifying potential beacon signal channels, verifying beacon signal channels and synchronizing the device to one of the beacon channels. | 11-20-2008 |
| 20080299926 | RADIO RECEIVER FOR HYBRID BROADCAST SYSTEMS - An example radio receiver and a method is provided for controlling a radio receiver having two tuners, and receiving a hybrid signal containing digital and analog broadcast signal components. According to the example method, a selection is made in the radio receiver to operate between at least the following operating modes of the receiver: (i) a first operating mode in which both tuners are tuned to the same broadcast hybrid signal and where one of the tuners is configured to receive the digital broadcast signal and the other tuner is configured to receive the analog broadcast signal; (ii) a second operating mode in which one of the tuners receiving the digital broadcast signal is the operating tuner and the other tuner is a search and check tuner; and (iii) a third operating mode in which one of the tuners receiving the analog broadcast signal is the operating tuner and the other tuner is a search and check tuner. In this example, the hybrid signal is received and the two tuners are controlled in accordance with the selected operating mode of the receiver. | 12-04-2008 |
| 20090036074 | ANTENNA DIVERSITY SYSTEM HAVING TWO ANTENNAS FOR RADIO RECEPTION IN VEHICLES - There is an antenna diversity system for radio reception in moving vehicles which includes a receiver, and at least two antennas coupled to the receiver. These antennas transmit antenna feed signals to an antenna diversity module coupled between the receiver and the antennas. In at least one embodiment, the antenna diversity module comprises at least one evaluation circuit for evaluating an interference in a reception signal, and at least one processor for adjusting a magnitude em and a phase angle of a linear combination of the antenna feed signals. The evaluation circuit reads and sends an interference indication signal to the processor to create a relatively low interference signal. Thus, the diversity module combines the antenna feed signals in an adjustable manner based on an magnitude of phase angle, to form a linear combined signal that is present at the output of the antenna diversity module as a reception signal. | 02-05-2009 |
| 20090098842 | SIGNAL RECEIVING APPARATUS AND CONTROL METHOD THEREOF - A signal receiving apparatus includes: a receiver which receives at least two types of broadcasting signals included in a plurality of channels; and a controller which controls the receiver to search a current channel according to one type of a broadcasting signal used for a previous channel search and to search a current channel according to another type of a broadcasting signal if the channel is not searched, to thereby set an automatic channel. | 04-16-2009 |
| 20090181629 | Direct Digital Conversion Tuner and Method for Using Same - A direct sampling tuner includes a low noise amplifier and an optional dynamically configurable band pass filter coupled to the low noise amplifier. The optional filter is configured to pass a selected band of channels. The tuner further includes a relatively high accuracy, multi-bit analog-to-digital converter (“ADC”) coupled to the LNA or to the optional dynamically configurable band pass filter. The ADC operates at greater than about twice a frequency of a sampled signal. The ADC directly samples the spectrum of the selected channels at the Nyquist frequency, thus avoiding image problems presented by conventional tuners. | 07-16-2009 |
| 20090197551 | Billboard Receiver and Localized Broadcast System - A billboard receiver comprising a layered structure may include a first layer comprising a receiver portion and at least a second layer defining a billboard portion. The receiver portion may include a radio receiver configured to be tunable to a selected one of a plurality of predefined radio programs via a corresponding one of a plurality of predetermined selection switch mechanisms. The billboard portion may include at least a first substrate comprising the second layer. The first substrate may be positioned to substantially cover at least one side of the receiver portion. | 08-06-2009 |
| 20090253394 | Simplified high frequency tuner and tuning method - A disclosed method tunes a signal from a channelized spectrum having a predetermined channel spacing. A signal of interest having a predetermined maximum bandwidth is mixed with a local oscillator signal, which has a frequency that is an integer multiple of the channel spacing or one-half of a channel spacing displaced from an integer multiple of the channel spacing. The local oscillator signal is selected to frequency translate the signal of interest to within a near-baseband passband whose lower edge is spaced from DC by at least about the maximum bandwidth of the signal of interest. Problems associated with 1/f noise, DC offsets, and self-mixing products are avoided or substantially diminished. Other methods and systems are also disclosed. | 10-08-2009 |
| 20090270058 | SYSTEMS AND METHODS FOR ADJUSTMENT OF A FREQUENCY MODULATION RADIO FREQUENCY - A system for adjusting a frequency modulation (FM) radio frequency is provided. The system includes determining a preferred frequency of a region and converting a current frequency of the FM radio to the preferred frequency if the current frequency is different from the preferred frequency. A related method is also provided. | 10-29-2009 |
| 20100056087 | Simplified High Frequency Tuner and Tuning Method - A disclosed method tunes a signal from a channelized spectrum having a predetermined channel spacing. A signal of interest having a predetermined maximum bandwidth is mixed with a local oscillator signal, which has a frequency that is an integer multiple of the channel spacing or one-half of a channel spacing displaced from an integer multiple of the channel spacing. The local oscillator signal is selected to frequency translate the signal of interest to within a near-baseband passband whose lower edge is spaced from DC by at least about the maximum bandwidth of the signal of interest. Problems associated with 1/f noise, DC offsets, and self-mixing products are avoided or substantially diminished. Other methods and systems are also disclosed. | 03-04-2010 |
| 20100124892 | SYSTEM AND METHOD FOR INTERNET RADIO STATION PROGRAM DISCOVERY - An Internet radio station program discovery service is provided. In general, the discovery service subscribes to or downloads a number of Internet radio station programs. For each radio station program, the discovery service analyzes audio content of the radio station program to dynamically categorize the radio station program over time. The discovery service also enables users to discover radio station programs of interest based on the dynamic categorizations of the radio station programs. The users may be enabled to search for radio station programs of interest based on the dynamic categorizations of the radio station programs, navigate or browse the radio station programs based on the dynamic categorizations of the radio station programs, or the like. | 05-20-2010 |
| 20100197254 | METHODS AND SYSTEMS FOR LEAST SQUARES BLOCK CHANNEL ESTIMATION - Certain embodiments of the present disclosure provide techniques for channel estimation without resorting to the channel second-order statistics. Methods and systems are proposed for improving the performance of an un-constrained least squares channel interpolator by using available side information of the channel, such as signal-to-noise ratio (SNR), Doppler frequency and/or delay spread. | 08-05-2010 |
| 20100210228 | BROADCAST RECEIVER AND BROADCAST CHANNEL SEEK METHOD - A broadcasting receiver suitable for receiving broadcasting signal transmitted with signal format is provided in which carrier wave is allocated in a frequency channel with certain frequency offset and signal intensity, which comprises: an information acquiring means for acquiring information related to the frequency channel in seek; and a station existence determining means for determining whether the frequency channel is station-existent or not based on information acquired by the information acquiring means; and wherein, the information acquiring means acquires information for receiving intensity of carrier wave and information for frequency offset. | 08-19-2010 |
| 20100216417 | 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 signal providing an instruction to change the receiving frequency to the second frequency, the audio signal processing circuit being a circuit configured to modulate a carrier wave having the first frequency corresponding to setting data with a modulation signal corresponding to an audio signal to be reproduced by the FM receiving device and to the change data, and transmit the modulated carrier wave to the FM receiving device; and a setting unit configured to set the setting data so as to change a frequency of the carrier wave to the second frequency after the output unit outputs the change data to the audio signal processing circuit. | 08-26-2010 |
| 20100227579 | RADIO BROADCASTING RECEIVER AND METHOD FOR SEEKING RADIO BROADCASTING - A broadcasting receiver suitable for receiving a broadcasting signal transmitted in an IBOC signal format, comprises: a channel seek directing means for directing to start a channel seeking operation that selects selectable channel in an order of frequency; a channel seek controlling means for starting and controlling the channel seeking operation in accordance with the direction of the channel seek directing means; and a multichannel determining means for determining whether a selected frequency channel is providing multichannel digital broadcasting or not; and wherein the channel seek controlling means selects a next subchannel in an order of identification code before searching for the next frequency channel, if it is determined by the multichannel determining means that the selected frequency channel is providing the multichannel digital broadcasting. | 09-09-2010 |
| 20100291889 | RADIO TUNER USER INTERFACE - A radio comprising a receiver for receiving signals comprising a plurality of signal components of different carrier frequencies and a tuner for selecting a signal component of a particular carrier frequency from the plurality of received signal components, the radio having a user interface comprising a user input component and the radio being configured to cause the tuner to operate in a first tuning mode when the user input component is activated for less than a first period of time, operate in a second tuning mode when the user input component is activated for longer than the first period of time and less than a second period of time and operate in a third tuning mode when the user input component is activated for at least the second period of time. | 11-18-2010 |
| 20110034139 | System and Method of Automatic Tuning Adjustment for Portable Radio Frequency Receivers - Systems and method for automatic adjustment of tunable filter for portable radio frequency receivers. The effective antenna impedance for a portable radio frequency receiver is often affected by human body. The front end tunable filter may become off tuned due to human body effect. The system relies on radio frequency signals received from an antenna interface and utilizes receive path circuitry to derive signal parameters about the received signal. Tuning control circuitry is used to provide control signals based on the signal parameters to adjust the tunable filter to achieve the best receiver performance. A method is disclosed for automatic adjustment of the tunable filter. The method comprises steps of receiving radio frequency signals, filtering the received radio frequency, processing the filtered signal to obtain digitized signals, deriving signal parameters based on the digitized signal; providing control signals to adjust the tunable filter, and repeating the steps until a desired result is achieved with respect to the signal parameters. | 02-10-2011 |
| 20110076973 | Mechanically tuned radio utilizing ratiometric time measurements and related methods - Mechanically tuned radios and related methods are disclosed that utilize ratiometric time measurements to detect settings for mechanical adjustment mechanisms. The radio systems and methods disclosed make a first time measurement associated with a mechanically adjusted circuit, make a second time measurement associated with the mechanically adjusted circuit, determine a setting for the mechanical adjustment mechanism based upon a ratio associated with the first and second time measurements, and utilize the setting to select a tuning frequency for signals received by the radio. More generally, ratiometric time measurements can be used to determine a setting for a mechanical adjustment mechanism for a mechanically adjusted circuit, and this setting can be used to at least part control a desired operational feature of a device. | 03-31-2011 |
| 20110151812 | APPARATUS AND METHOD FOR DETECTING SIGNAL IN COMMON FREQUENCY BAND - An apparatus for detecting a signal in a common frequency band includes: a signal processor configured to extract a selected band signal from received wireless signals by filtering the received wireless signal based on a frequency selection control signal, convert the extracted signal to a baseband signal, and detect a predetermined signal; a sensing signal determiner configured to determine existence of the signal, output a determination result, and outputs a frequency selection generating signal when the predetermined signal is absent; and a frequency selection controller configured to output the frequency selection control signal by selecting a target band among a plurality of previously decided bands. | 06-23-2011 |
| 20120129475 | RADIO SYSTEM INCLUDING TERRESTRIAL AND INTERNET RADIO - A radio system includes a radio tuner for receiving a terrestrial radio signal, a communication device for receiving an internet data, a user interface in signal communication with at least the radio tuner to provide a selective control of at least the radio tuner, and a processor in signal communication with the radio tuner, the communication device, and the user interface, wherein the processor receives a user preference data from at least one of the communication device and the user interface, analyzes the user preference data based on an instruction set, and selectively transmits an audio output to a user based upon the user preference data, wherein a source of the audio output is one of the terrestrial radio signal and the internet data. | 05-24-2012 |
| 20120129476 | RADIO SYSTEM INCLUDING TERRESTRIAL AND INTERNET RADIO - A radio system includes a radio tuner for receiving a terrestrial radio signal, a communication device for receiving an internet data, a user interface in signal communication with at least the radio tuner to provide a selective control of at least the radio tuner, and a processor in signal communication with the radio tuner, the communication device, and the user interface, wherein the processor receives a user preference data from at least one of the communication device and the user interface, analyzes the user preference data based on an instruction set, and selectively transmits an audio output to a user based upon the user preference data, wherein a source of the audio output is one of the terrestrial radio signal and the internet data. | 05-24-2012 |
| 20120190319 | METHOD AND APPARATUS FOR SENSING INTER-MODULATION TO IMPROVE RADIO PERFORMANCE IN SINGLE AND DUAL TUNER - A method of performing alternate frequency switching in a radio includes tuning the radio to a primary frequency. A candidate alternate frequency is identified. It is determined whether the candidate alternate frequency is a third order inter-modulation artifact. Tuning is switched from the primary frequency to the candidate alternate frequency only if it is determined in the determining step that the candidate alternate frequency is not a third order inter-modulation artifact. | 07-26-2012 |
| 20130095778 | Simplified High Frequency Tuner and Tuning Method - A disclosed method tunes a signal from a channelized spectrum having a predetermined channel spacing. A signal of interest having a predetermined maximum bandwidth is mixed with a local oscillator signal, which has a frequency that is an integer multiple of the channel spacing or one-half of a channel spacing displaced from an integer multiple of the channel spacing. The local oscillator signal is selected to frequency translate the signal of interest to within a near-baseband passband whose lower edge is spaced from DC by at least about the maximum bandwidth of the signal of interest. Problems associated with 1/f noise, DC offsets, and self-mixing products are avoided or substantially diminished. Other methods and systems are also disclosed. | 04-18-2013 |
| 20130143507 | BROADCAST RECEIVING APPARATUS AND BROADCAST RECEIVING METHOD - Provided are a broadcast receiving apparatus which simultaneously receives a plurality of channels using a single tuner and tunes to a channel without affecting other channels when changing a channel, and a broadcast receiving method thereof. The broadcast receiving apparatus includes a radio frequency (RF) receiver receiving RF broadcast signals of a plurality of channels; an intermediate frequency (IF) converter converting the RF broadcast signals of the plurality of channels into IF signals, respectively; a plurality of signal processors separately processing and outputting the converted IF signals; a noise generator generating a noise signal corresponding to the IF signals; and a controller performing control to output the noise signal instead of the IF signals when at least one of the plurality of channels is changed according to user's input. | 06-06-2013 |
| 20130165062 | TUNER INPUT CIRCUIT - Disclosed is a tuner input circuit. The tuner input circuit includes an integrated including a low noise amplifier and a band pass filter embedded in one chip. | 06-27-2013 |
| 20130309986 | METHOD AND APPARATUS FOR ENHANCED PLAYBACK OF CONTENT WHILE SWITCHING AMONG CHANNELS OF BROADCAST OR STREAMED CONTENT WHILE BEING RECEIVED - A system and method provide an enhanced listening experience for a user of a radio receiver or other device that receives broadcast or streamed content having a plurality of program channels. The method and system buffer designated channels at the receiver and, when switching among channels, play back the buffered designated channels during reception from a selected point therein depending on the channel or other criteria. When switching to a different channel during reception, a user is able to hear content in a buffered program channel with music from the start of a song, for example, whereas content in a channel with news, talk radio, or live sports is played back from live reception, even though the content segments are transmitted at different start times relative to their selected times for playback following a channel change. User controls allow navigation among buffered designated channels during reception. | 11-21-2013 |
| 20140073276 | ENTERTAINMENT SYSTEM - Disclosed here is an audio system and a method of operating the same. The audio system comprises a receiver module for receiving radio frequency (RF) input signal associated with a plurality of radio stations, an Analog to Digital Converter (ADC) coupled to the receiver for digitizing the received RF input signal and a stored set of computer-executable instructions. The instructions include those for selecting a particular radio station from the plurality of radio stations, shifting the frequency of the particular radio station to an intermediate frequency (IF), demodulating the frequency shifted portion of the RF input signal to retrieve an output signal and generating a time division multiplexed signal based on the output signal. | 03-13-2014 |
| 20140335807 | METHODS, CIRCUITS, SYSTEMS AND APPARATUS PROVIDING AUDIO SENSITIVITY ENHANCEMENT IN A WIRELESS RECEIVER, POWER MANAGEMENT AND OTHER PERFORMANCES - A wireless receiver ( | 11-13-2014 |
| 20150118982 | RADIO WITH A SWITCHED MODE POWER SUPPLY - A radio including a switched mode power supply configured to shift its operating frequency to a frequency which alleviates electromagnetic interference with a radio frequency to which the radio is or will be tuned. | 04-30-2015 |
| 20150118983 | REDUCED AIRCRAFT VHF COMMUNICATION ANTENNAS USING MULTI-CHANNEL VHF RADIOS - A multichannel two antenna radio unit device comprising a left very high frequency (VHF) radio and a right VHF radio is provided. The left VHF radio unit comprises a left VHF radio transceiver, the left VHF radio transceiver comprising a left wideband multi-channel receiver configured to receive voice channels and data channels in an aeronautical VHF communication band, the left VHF radio configured to communicate on at least two voice channels and at least one data channel. The right VHF radio comprises a right VHF radio transceiver, the right VHF radio transceiver comprising a right wideband multi-channel receiver configured to receive voice channels and data channels in an aeronautical VHF communication band, the right VHF radio configured to communicate on the at least two voice channels and the at least one data channel, and communicatively coupled to the left VHF radio unit via a bi-directional serial bus. | 04-30-2015 |
| 20150303955 | Complex-Pole Load Offering Concurrent Image Rejection and Channel Selection - A complex-pole load is configured as a parallel circuit, having 4 transistors arranged in pairs. Each pair of transistors has a transistor gated by a control voltage sources, and connected in parallel with a transistor diode connected for gating by the respective input. The control voltage sources result in the circuit synthesizing a first order complex pole at a positive IF (+IF) or a negative IF (−IF) for channel selection and image rejection, offering image rejection and channel selection concurrently. | 10-22-2015 |
| 20160173213 | SMART FM/AM AUTO-SCANNER | 06-16-2016 |
